JP6471578B2 - Bathing state detection device - Google Patents

Description

  The present invention relates to a bathing state detection device that detects an abnormal state of a bather in a bathtub.

  The device described in Patent Document 1 measures the water level of hot water in a bathtub using a water level sensor while a person is taking a bath, calculates a human body submerged volume, and further uses a wave sensor to determine a physical quantity related to waves that transmit hot water. Measure and calculate the bather's movement based on the physical quantity. When the bathing person's movement is smaller than the predetermined movement when the human body submerged volume is an inappropriate value, the time elapsed from the time when the movement becomes small exceeds the predetermined time corresponding to the “warning”. And an alarm sound is generated from the bathroom remote control. When a bather operates the reaction button on the bathroom remote control, an alarm sound is generated from the home intercom when the elapsed time from the time of the operation exceeds the elapsed time corresponding to the predetermined hot water temperature. The caregiver service terminal is notified that the person is in danger. Further, after the notification, the bathtub water is drained until the water level of the bathtub is lowered to the safe water level.

JP 2011-248422 A

  However, the apparatus of Patent Document 1 does not detect the state of the bather after determining who the current bather is. For this reason, there is room for improvement in that it is not possible to detect a state specific to a bather such as an actual bather's habit or habit.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a bathing state detection device capable of determining a bathing state peculiar to a bather and improving safety support during bathing. It is.

  The present invention employs the following technical means in order to achieve the above-mentioned object. Further, the reference numerals in parentheses described in the claims and in this section are examples showing the correspondence with the specific means described in the embodiments described later as one aspect, and the technical scope of the present invention is as follows. It is not limited.

That is, one of the inventions related to the disclosed bathing state detection device is the water level detection means (66) for detecting the water level of the bathtub (80), the amount of rise in the water level of the bathtub when there is a bather, the bathing start time, A storage unit (402) for storing bathing pattern learning information obtained by learning bather information including at least one of bathing end time and bathing time, and a plurality of bathing pattern learning information stored in the storage unit The determination part (401) which extracts whether the bathing pattern learning information suitable for the bather currently taking a bath is extracted from the bathing pattern learning information based on the extracted bathing pattern learning information. and, with a,
Multiple bathing pattern learning information is learning information that classifies bather information into multiple bathing patterns and is classified into multiple groups, and the determination unit detects from the current bather among the multiple groups When a group that matches the bather information to be extracted is extracted, and the bathing time of the current bather is longer than the shortest bathing time included in the extracted group, the current bather is abnormal. It is characterized in that it is determined that occurrence has occurred .

  According to this invention, when there is a bather in the bathtub, a bathing pattern generated by learning bather information including the amount of rise in the water level of the bathtub and at least one of the bathing start time, bathing end time, and bathing time. Store learning information. Therefore, when there are a plurality of people using the same bath, the bathing state detection device stores unique bathing pattern learning information corresponding to each person. Then, when there is a bather, the learning information suitable for the current bather is extracted from the stored bathing pattern learning information, and whether the current bather is abnormal based on the extracted learning information. Determine whether or not. Thereby, when there are a plurality of users who use the bathtub, it can be determined whether or not the current bather is abnormal by comparing with the bathing pattern unique to that person.

  For example, bather information such as total time in the bath, continuous bathing time, bathing end time, degree of water level change, time without water level change, etc. is learned and stored as bathing pattern learning information. The learning information varies depending on the user, and the bathing pattern learning information can provide features such as a bathing habit and bathing habits for each user. For example, when a bather loses his mind, stops cardiopulmonary, or falls asleep, the information obtained from the current bathing state is compared with the bathing pattern learning information obtained from past bathing results. A big difference with the bather. According to the present invention, this difference can be detected to determine whether the bather is now in an abnormal state.

As described above, the present invention can provide a bathing state detection device that can perform abnormality determination based on a bathing state unique to a bather and can improve safety support during bathing.
One of the inventions relating to the disclosed bathing state detection device is a water level detection means (66) for detecting the water level of the bathtub (80), the amount of rise in the water level of the bathtub when there is a bather, the bathing start time, and the bathing end. A storage unit (402) that stores bathing pattern learning information obtained by learning bather information including at least one of time and bathing time, and a plurality of bathing pattern learning information stored in the storage unit, A determination unit (401) for extracting bathing pattern learning information suitable for a bather currently taking a bath and determining whether an abnormality has occurred in the current bather based on the extracted bathing pattern learning information; With
The storage unit stores the time when the water level detected by the water level sensor (66) is equal to or lower than the water level before bathing as the bathing end time, and further the time required from the start of bathing to the end of bathing. As well as the amount of water level rise after bathing before bathing, and the storage unit calculates the level of water level change or the water level change calculated using the detected water level level periodically acquired during the bathing time. The absence time is stored as bathing pattern learning information.
One of the inventions relating to the disclosed bathing state detection device is a water level detection means (66) for detecting the water level of the bathtub (80), the amount of rise in the water level of the bathtub when there is a bather, the bathing start time, and the bathing end. A storage unit (402) that stores bathing pattern learning information obtained by learning bather information including at least one of time and bathing time, and a plurality of bathing pattern learning information stored in the storage unit, A determination unit (401) for extracting bathing pattern learning information suitable for a bather currently taking a bath and determining whether an abnormality has occurred in the current bather based on the extracted bathing pattern learning information; With
The storage unit stores the time when the water level detected by the water level sensor (66) is equal to or lower than the water level before bathing as the bathing end time, and further the time required from the start of bathing to the end of bathing. Further, the storage unit stores, as bathing pattern learning information, the amount of water level increase during bathing that is calculated using the detected value of the water level that is periodically acquired during the bathing time. It is learning information that classifies bather information into a plurality of bathing patterns and is classified into a plurality of groups, and the determination unit conforms to the bather information detected from the current bather among the plurality of groups. If a group is extracted and the detected water level rise for the current bather is greater than the water level rise included in the extracted group by a certain amount or more, the current bather is abnormal. Is determined that none, characterized by informing the abnormality effect of the generated installed in the bathroom the bathroom the controller (41) and bathroom outside the installed bath outside controller (42).

It is a block diagram of a hot water supply apparatus provided with the bathing state detection apparatus of 1st Embodiment to which this invention is applied. It is the block diagram which showed the relationship between the control apparatus of 1st Embodiment, and each part. It is a flowchart in connection with the process sequence of the bathing state detection in the state where the bathing pattern learning information is not memorize | stored. It is a flowchart in connection with the process sequence of the bathing state detection using the bathing pattern learning information memorize | stored. It is a flowchart which concerns on the bathing confirmation which advances simultaneously with the flowchart of FIG. 3 or FIG. It is the flowchart which showed the process sequence of the bathing state detection using the stored bathing pattern learning information in 2nd Embodiment. It is the flowchart which showed the processing procedure of the display routine which concerns on step 103B. It is the block diagram which showed the relationship between the control apparatus which concerns on 3rd Embodiment, and each part. It is the flowchart which showed the process sequence of the display routine which concerns on step 103B in 3rd Embodiment. It is the flowchart which showed the process sequence of the bathing state detection using the stored bathing pattern learning information in 4th Embodiment.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. In addition to combinations of parts that clearly indicate that each embodiment can be combined specifically, the embodiments may be partially combined even if they are not clearly specified, unless there is a problem with the combination. Is possible.

(First embodiment)
A first embodiment to which the present invention is applied will be described below. The structure of the hot water supply apparatus 100 provided with the bathing state detection apparatus which concerns on this invention is demonstrated with reference to FIG.1 and FIG.2. The details of the operation of the bathing state detection device will be described later.

  As shown in FIG. 1, the hot water supply device 100 includes a heat pump unit 20 as a heat pump type heating device for boiling high-temperature water, a tank unit 90, and a control device 40 that controls the operation of the hot water supply device 100. The tank unit 90 includes a tank 10 in which water is supplied to the lowermost portion thereof by the introduction pipe 11, various pipes, various valves, and the like. The tank unit 90 and the heat pump unit 20 are configured so as to be integrated or separated from each other at the installation site. Further, the reheating operation is performed by the reheating apparatus 70 configured to exchange heat between the bathtub water in the bathtub 80 and the hot water in the tank 10.

  The tank 10 is a container for storing hot water used for hot water supply. The tank 10 is a metal container having excellent corrosion resistance, for example, stainless steel, and a heat insulating material (not shown) is disposed on the outer peripheral portion. Can keep warm over time.

  The tank 10 has a substantially cylindrical shape, and an introduction port 10a is provided on the bottom surface thereof. An introduction pipe 11 as an introduction flow path for supplying tap water into the tank 10 is connected to the introduction port 10a. The introduction pipe 11 is provided with a water supply thermistor 51 and a pressure reducing valve 78. The water supply thermistor 51 outputs an electrical signal for detecting the temperature in the introduction pipe 11 to the control device 40. Further, the pressure reducing valve 78 can reduce the water pressure of the tap water flowing through the introduction pipe 11 to a predetermined pressure, or can prevent the back flow of hot water in the case of water interruption or the like.

  In addition, the introduction pipe 11 is provided with a water supply pipe 11A that branches from a portion upstream of the introduction port 10a. The downstream end of the water supply pipe 11 </ b> A is connected to a hot water supply mixing valve 15 and a bath mixing valve 16.

  A high temperature outlet 10b is provided at the uppermost portion of the tank 10, and the high temperature outlet 10b serves as a hot water supply passage for extracting hot hot water out of hot water stored in the tank 10. A high temperature take-out pipe 12 is connected. Further, a discharge pipe provided with a relief valve 79 is connected in the middle of the path of the high temperature take-out pipe 12, and when the pressure in the tank 10 rises above a predetermined pressure, the hot water in the tank 10 is removed. It is discharged outside so as not to damage the tank 10 or the like.

  One end of an intermediate pipe 10c1 is connected to the intermediate part 10c of the tank. The intermediate pipe 10c1 is provided with a check valve 77 that prevents backflow to the intermediate part 10c side. The other end of the intermediate pipe 10c1 is connected to the high temperature extraction pipe 12 by a medium temperature mixing valve 14. For example, the intermediate portion 10c divides the height of the tank 10 into three equal parts, and in order from the top, the upper portion (also referred to as a hot water region), the intermediate portion (also referred to as a medium hot water region), and the lower portion (also referred to as a low temperature hot water region). ), It is provided at a part included in the intermediate part.

  A plurality (seven in this example) of tank water temperature thermistors 55a to 55g as hot water storage temperature detecting means for detecting the amount of hot water storage and the temperature of hot water storage are provided on the outer wall surface of the tank 10 in the vertical direction (the height of the tank 10). Are arranged at substantially equal intervals. The tank water temperature thermistors 55 a to 55 g output temperature signals at various water level levels to the hot water supply water filled in the tank 10 to the control device 40.

  Based on the temperature information transmitted from the tank water temperature thermistors 55a to 55g, it is possible to detect the temperature boundary position between the heated water heated up in the tank 10 and the water before heated in the lower tank. Thus, the amount of hot water stored can be detected. For example, when the detected temperature of a certain tank water temperature thermistor exceeds a predetermined temperature that can be used as the amount of stored hot water, hot water that can be used for hot water is stored from the top of the tank 10 to the position of the tank water temperature thermistor. Become.

  Among these tank water temperature thermistors 55a to 55g, the water temperature thermistors 55c and 55d located in the middle of the tank height have a function of detecting the temperature of hot water flowing through the intermediate portion 10c and the tank inflow portion 74c. .

  A suction port 10 d to which a pipe forming the heat pump side circuit 21 is connected is provided at the lower part of the tank 10. In the upper part of the tank 10, a discharge port 10e to which a pipe forming the heat pump side circuit 21 is connected is provided. Hot water discharged from the heat pump unit 20 side flows into the tank 10 from the top into the discharge port 10e.

  A part of the heat pump side circuit 21 is a water side passage of the water / refrigerant heat exchanger of the heat pump unit 20. In the heat pump side circuit 21, a switching valve 22 is provided between the water side passage and the discharge port 10e.

  In the heat pump side circuit 21, a hot water supply outlet pipe 21a is connected to a part from the outlet side of the heat pump unit 20 to the switching valve 22, and an upper pipe 21b is connected to a part from the switching valve 22 to the discharge port 10e. Has been. The upper pipe 21 b also functions as an upper inflow pipe through which high-temperature hot water heated by the heat pump unit 20 flows into the tank 10.

  The switching valve 22 functions as a switching unit that can switch whether the outlet passage of the heat pump unit 20 communicates with the discharge port 10 e side of the tank 10 or communicates with the bypass pipe 23. The switching valve 22 is electrically connected to the control device 40 and is controlled by the control device 40. The bypass pipe 23 forms a first communication pipe that connects the suction port 10d and the discharge port 10e without passing through the water-side passage of the water / refrigerant heat exchanger. Further, the bypass pipe 23 forms a passage through which hot water flowing out from the water side passage can be returned to the water side passage without passing through the inside of the tank 10.

  The heat pump unit 20 includes a heat pump cycle that uses carbon dioxide having a low critical temperature as a refrigerant, and a water supply pump installed in the heat pump side circuit 21. According to the supercritical heat pump cycle, hot water having a temperature higher than that of a general heat pump cycle, for example, about 85 ° C. to 90 ° C. can be stored in the tank 10.

  The heat pump cycle is formed by connecting at least an electric compressor, a water / refrigerant heat exchanger, an electric expansion valve, an air heat exchanger, and a refrigeration cycle functional component of an accumulator in an annular shape by piping. . Furthermore, a blower that provides forced air to the air heat exchanger is provided in the vicinity of the air heat exchanger.

  The heat pump unit 20 is configured to operate according to a control signal from the control device 40 and to display the operation state on the display unit 410 of the in-bathroom controller 41 and the display unit 420 of the outside-bathroom controller 42. The display unit 410 and the display unit 420 are, for example, liquid crystal screens provided in each controller. The heat pump unit 20 performs a boiling operation for heating hot water in the tank 10 by controlling the number of revolutions of the compressor, mainly using the late-night power in the midnight time zone, which is inexpensively set. In addition, the heat pump unit 20 performs a boiling operation when the amount of stored hot water in the tank 10 becomes insufficient even in a time zone other than the midnight time zone. Further, the rotational speed of the compressor is controlled by the control device 40 so that a prescribed capacity is obtained under various operating conditions.

  The expansion valve is a decompression unit that decompresses the high-pressure refrigerant flowing out of the water / refrigerant heat exchanger, and the valve opening degree is electrically controlled by the control device 40. The air heat exchanger evaporates and evaporates the refrigerant decompressed by the expansion valve by heat exchange with the outdoor air blown by the blower, and supplies the gas refrigerant to the compressor. The rotational speed of the blower is controlled by the control device 40 so as to ensure the heat exchange performance of the air heat exchanger. The accumulator gas-liquid separates the refrigerant flowing out from the air heat exchanger, sucks only the gas-phase refrigerant into the compressor, and stores excess refrigerant in the cycle.

  The water / refrigerant heat exchanger is a heating heat exchanger that heats water with hot and high-pressure refrigerant discharged from the discharge port of the compressor to make hot water. The refrigerant side passage of the water / refrigerant heat exchanger is constituted by a refrigerant channel tube for exchanging heat between the high-pressure gas refrigerant discharged from the discharge port of the compressor and the hot water supply water flowing through the water side passage. The water / refrigerant heat exchanger has, for example, a two-layer structure in which the refrigerant-side passage and the opposed surfaces of the water-side passage are in close contact with each other so as to allow heat exchange. The water side passage is configured such that heat exchange between the refrigerant and water flowing through the heat pump side circuit is performed over the entire length of the refrigerant flow path from the refrigerant inlet portion to the refrigerant outlet portion of the refrigerant side passage. And when warm water equivalent to predetermined boiling temperature (about 65 degreeC-90 degreeC) is taken out from the exit part of a water side channel | path, it is comprised so that a regular heat exchange performance can be taken out.

  In the heat pump side circuit 21, a water supply pump is disposed between the suction port 10d and the water side passage. The water supply pump is rotationally driven by a built-in electric motor, sucks hot water in the tank 10 from the suction port 10d and heats it in the water-side passage during the heating operation, and then discharges the water from the discharge port 10e of the tank 10 or It operates to recirculate to the tank inflow portion 74c. The rotation speed of the feed water pump is controlled by the control device 40 so that the water temperature at the outlet side of the water side passage detected by the boiling temperature thermistor becomes a predetermined target boiling temperature determined under various operating conditions. .

  The incoming water temperature thermistor outputs an electrical signal for detecting the temperature of hot water supplied to the water / refrigerant heat exchanger. The boiling temperature thermistor outputs an electrical signal for detecting the boiling temperature at the outlet of the water / refrigerant heat exchanger. The discharged refrigerant temperature thermistor outputs an electrical signal for detecting the temperature of the refrigerant discharged from the compressor. The outlet refrigerant temperature thermistor outputs an electrical signal for detecting the refrigerant temperature at the outlet of the water / refrigerant heat exchanger. Each thermistor outputs an electrical signal to the control device 40. The pressure sensor outputs an electric signal for detecting the refrigerant pressure at the outlet of the refrigerant side passage to the control device 40.

  The intermediate temperature mixing valve 14 is provided at a junction of the high temperature extraction pipe 12 and the intermediate pipe 10c1. The intermediate temperature mixing valve 14 adjusts the respective opening area ratios of the high temperature side high temperature take-out pipe 12 and the intermediate temperature side intermediate pipe 10c1 so that the hot water taken out from the high temperature take-out pipe 12 and the intermediate pipe 10c1 are mixed. Adjust the mixing ratio with the medium-temperature hot water taken out from. The intermediate temperature mixing valve 14 adjusts the mixing ratio to adjust the temperature of hot water flowing through the hot water supply pipe 17, the hot water supply mixing valve 15, the bath mixing valve 16, the bath pipe 18 and the like. It is.

  The intermediate temperature mixing valve 14 is controlled by the control device 40 based on temperature signals detected by the tank water temperature thermistors 55 a to 55 g and the hot water temperature thermistor 52. The hot water temperature thermistor 52 is provided on the outlet side of the intermediate temperature mixing valve 14 and detects the temperature of the hot water mixed by the intermediate temperature mixing valve 14. Here, the medium-temperature hot water taken out from the intermediate pipe 10c1 is heated to a high temperature in the tank 10 so that the temperature detected by the hot water temperature thermistor 52 is a predetermined temperature, for example, a set temperature +2 to 5 ° C. set by the user. The temperature is adjusted to the predetermined temperature by mixing with hot water. Connected to the outlet side of the intermediate temperature mixing valve 14 are a hot water supply pipe 17 as a hot water supply flow path and a bath pipe 18 as a hot water filling pipe branched from the hot water supply pipe 17.

  The hot water supply pipe 17 is a pipe that guides hot water whose temperature is adjusted to a set temperature to a hot water supply terminal (curran, shower, etc.) as a terminal at the downstream end thereof. In the middle of the flow path of the hot water supply pipe 17, a hot water supply mixing valve 15 as temperature adjusting means, a hot water supply thermistor 53 as temperature detecting means, a flow rate counter 59, a check valve 60 and the like are provided. The hot water supply thermistor 53 outputs an electric signal for detecting the temperature of the hot water mixed by the hot water supply mixing valve 15 to the control device 40. The flow rate counter 59 detects the flow of hot water from the hot water supply mixing valve 15 and outputs a detection signal to the control device 40.

  The downstream end of the bath pipe 18 is connected to the bathtub water circuit 71 and communicates with the adapter 81 of the bathtub 80 via the bathtub water circuit 71. The bath pipe 18 is a pipe that guides hot water whose temperature is adjusted to a set temperature into the bathtub 80 when hot water is filled in the bathtub 80, hot water, hot water, or the like. In the middle of the flow path of the bath pipe 18, the bath mixing valve 16, bath thermistor 54, hot water solenoid valve 61, check valve 62, hot water flow rate counter 63, check A valve 64 is provided. Further, a drain valve 68 is provided in the pipe connecting between the bath mixing valve 16 and the hot water solenoid valve 61 and between the check valve 62 and the hot water flow rate counter 63. These bath mixing valve 16, bath thermistor 54, hot water solenoid valve 61, check valve 62, hot water flow counter 63, check valve 64 and drain valve 68 constitute a bath pouring unit 69. .

  The hot water supply mixing valve 15 and the bath mixing valve 16 are temperature control valves that adjust the temperature of hot water discharged from the ends of the hot water supply pipe 17 and the bath pipe 18, respectively. The mixing valve 15 for hot water supply and the mixing valve 16 for bath have respective opening area ratios (the opening degree on the hot water side adjusted by the intermediate temperature mixing valve 14 and the opening degree on the hot water side supplied from the water supply pipe 11A). By adjusting the ratio, the hot water temperature is adjusted to the set temperature. The operation of the hot water mixing valve 15 and the bath mixing valve 16 is controlled by the control device 40 based on electrical signals relating to the temperatures detected by the hot water thermistor 51, the hot water temperature thermistor 52, the hot water thermistor 53, and the bath thermistor 54. The

  The bath thermistor 54 outputs an electrical signal for detecting the temperature in the bath pipe 18 downstream of the bath mixing valve 16 to the control device 40. The hot water solenoid valve 61 is a valve that opens and closes the flow path of the bath pipe 18, and is controlled by the control device 40 when hot water is filled into the bathtub 80, hot water, and hot water. The hot water flow counter 63 detects the flow of hot water at the outlet of the bath mixing valve 16 and outputs a detection signal to the control device 40. When the hot water flow rate counter 63 detects the flow of hot water at the outlet of the mixing valve 16 for bath, it indicates that the hot water solenoid valve 61 of the bath pipe 18 is opened and discharged.

  The check valves 62 and 64 are valves for preventing the bath water circulating in the bath water circuit 71 from flowing back to the bath mixing valve 16 side. The circulation temperature thermistor 56 outputs an electrical signal for detecting the temperature of the bath water circulating in the bath water circuit 71 to the control device 40. The bath circulation sensor 65 is a flowing water sensor that can detect whether or not the bathtub water is circulating in the bathtub water circuit 71. The reheating thermistor 57 outputs an electric signal for detecting the temperature of the bath water after being heated by the reheating heat exchanger 73 to the control device 40.

  The bathtub 80 is provided with an automatic drain plug 50 that opens and closes a drain outlet provided at the bottom. The opening / closing operation of the automatic drain plug 50 is controlled by the hot water supply ECU 30. The water level sensor 66 is a water level detection means for detecting the amount of hot water in the bathtub 80 filled with water, in other words, the water pressure for determining the water level in the bathtub 80, and outputs a water pressure signal to the control device 40. That is, the control device 40 obtains the water level and the amount of water in the bathtub 80 based on the water pressure signal. The bath circulation pump 67 is an electric pump that pumps the bathtub water in the bathtub 80 to the reheating heat exchanger 73, and its operation is controlled by the control device 40.

  When the reheating operation is performed, the bath circulation pump 67 is driven so that the bathtub water in the bathtub 80 circulates in the bathtub water circuit 71 and is heated by the reheating heat exchanger 73. In the reheating operation, the control is continued until the bath water temperature detected by the circulation temperature thermistor 56 reaches the set temperature.

  The hot water supply device 100 includes a reheating heat exchanger 73 disposed outside the tank 10, and a primary circuit 74 that connects the reheating heat exchanger 73 and the inside of the tank 10. The inlet portion of the hot water supply water side passage 73b in the reheating heat exchanger 73 has a passage portion 74a located in a pipe connecting the outlet portion of the water side passage 26b of the water / refrigerant heat exchanger 26 and the switching valve 22, and The second communication pipe 74b communicates. Therefore, the inflow portion of the hot water supply water side passage 73b is connected to the passage connecting the outflow portion of the water side passage 26b and the switching valve 22 in the heat pump side circuit 21 by the second communication pipe 74b.

  In addition, the passage portion 74 a communicates with the discharge port 10 e of the tank 10 via the switching valve 22. In this way, the second communication pipe 74 b forms a communication passage that connects the passage portion 74 a until the hot water flowing out of the heat pump unit 20 reaches the switching valve 22 and the inflow portion of the reheating heat exchanger 73.

  The outlet of the hot water supply water side passage 73b is connected to a tank inflow portion 74c in the tank 10 by piping. The tank inflow portion 74c is provided in a portion included in the intermediate portion, like the intermediate portion 10c. The piping connecting the outlet portion of the hot water supply side passage 73b and the tank inflow portion 74c has a check valve 76, a primary side thermistor 58, and a primary side circulation pump 75 in order from the outlet portion side of the hot water supply side passage 73b. Is provided.

  The check valve 76 prevents hot water from flowing into the hot water supply side passage 73b via the second communication pipe 74b when the switching valve 22 is stored in the upper part of the tank 10 when boiling from the heat pump unit 20. It is a valve. The check valve 76 uses the valve opening pressure of the check valve 76. The check valve 76 may be replaced with an opening / closing valve that opens and closes the passage so that hot water does not flow back and flow into the reheating heat exchanger 73. With this configuration, it is possible to prevent hot water from the heat pump unit 20 from flowing into the tank 10 via the reheating heat exchanger 73. In addition, it is possible to avoid a state in which hot, medium or low temperature hot water flows and stops.

  The primary side circulation pump 75 is controlled by the control device 40 and can circulate hot water in the tank 10 and high-temperature water boiled by the heat pump unit 20 to the primary side circuit 74. The primary thermistor 58 outputs an electrical signal for detecting the temperature of the water flowing out from the outlet of the hot water supply water side passage 73b to the control device 40.

  The primary side circuit 74 is also a circuit that forms a path including the inside of the tank 10 from the tank inflow portion 74c to the discharge port 10e and the piping path from the discharge port 10e to the tank inflow portion 74c. is there. Further, the primary side circuit 74 includes a tank inflow portion from the tank inflow portion 74c to the discharge port 10e and from the suction port 10d of the tank 10 through the water side passage 26b and the second communication pipe 74b. And a circuit that forms a route including a piping route that reaches 74c. The primary side circuit 74 is also a circuit that constitutes a path that reaches the tank inflow portion 74c via the inlet 10d of the tank 10, the bypass pipe 23, and the second communication pipe 74b.

  The reheating apparatus 70 includes a bathtub water circuit 71 and a reheating heat exchanger 73. The bathtub water circuit 71 is a circuit that connects the bathtub 80 and the bathtub water-side passage 73a of the reheating heat exchanger 73 in an annular shape. The reheating heat exchanger 73 is a heat exchanger outside the tank that heats the bathtub water circulating in the bathtub water circuit 71 by the hot water stored in the tank 10 or the hot water heated by the heat pump unit 20 by heat exchange. .

  In order to use hot water stored in the tank 10 as a reheating heat source, each part is controlled as follows. The control device 40 switches the switching valve 22 to drive the primary-side circulation pump 75 so that the discharge port 10e of the tank 10 and the passage portion 74a communicate with each other. The hot water in the tank 10 flows out of the discharge port 10e by the driving force of the primary side circulation pump 75 and reaches the reheating heat exchanger 73 via the second communication pipe 74b. When the hot water in the tank 10 passes through the hot water supply water side passage 73b of the reheating heat exchanger 73 and heats the bathtub water flowing through the bathtub water side passage 73a to heat the bath water, the tank inflow portion 74c To the middle part in the tank 10.

(When carrying out HP boiling operation and reheating operation simultaneously)
In order to use the hot water boiled by the heat pump unit 20 as a reheating heat source, each part is controlled as follows. The control device 40 switches the switching valve 22 so that the discharge port 10e of the tank 10 and the passage portion 74a communicate with each other, and drives the primary-side circulation pump 75 and the water supply pump 24. Hot water in the tank 10 is taken out from the suction port 10d at the bottom of the tank and is heated by exchanging heat with the refrigerant when passing through the water side passage of the water / refrigerant heat exchanger, and then passes through the second communication pipe 74b. To the heat exchanger 73 for reheating. And after the hot water boiled in the heat pump unit 20 passes through the hot water supply water side passage 73b of the reheating heat exchanger 73, heat is exchanged with the bathtub water flowing through the bathtub water side passage 73a to heat the bathtub water. The tank inflow portion 74c returns to the intermediate portion in the tank 10.

  At this time, the control device 40 determines the primary-side flow rate by the primary-side circulation pump 75 in accordance with the reheating ability required for the reheating operation. When the boiling flow rate by the feed water pump 24 is larger than the primary-side flow rate, the boiling flow rate is the flow rate supplied from the passage portion 74a to the reheating heat exchanger 73 and from the passage portion 74a to the tank 10. And the flow rate supplied to the discharge port 10e. That is, a flow rate obtained by subtracting the primary flow rate from the boiling flow rate is supplied to the upper portion of the tank 10. Accordingly, the chasing operation and the heat supply to the tank 10 are performed simultaneously.

  The control device 40 is configured mainly with a microcomputer. The control device 40 includes an input unit to which signals detected by various sensors, thermistors, flow rate counters, and the like are input. The control device 40 includes a determination unit 401 that performs a predetermined determination using various information based on a signal input to the input unit and a built-in arithmetic program. The control device 40 includes a storage unit 402 that stores a control program in advance. The storage unit 402 includes, for example, a flash memory or a RAM, and reads and writes stored data, updates data, and learns.

  The control device 40 includes a temperature signal from each of the thermistors 51 to 58, a flow rate signal from the flow rate counter 59 and the hot water flow rate counter 63, a bath water flow signal from the bath circulation sensor 65, a water level signal from the water level sensor 66, Input signals from each controller are input. The control device 40 includes an operation control unit 400 that controls the various mixing valves 14 to 16, the heat pump unit 20, the switching valve 22, the hot water solenoid valve 61, the bath circulation pump 67, and the like based on these signals. For example, the control apparatus 40 can be comprised from hot water storage ECU, heat pump ECU which controls the heat pump unit 20, or system ECU which integrates these ECUs.

  Moreover, the control apparatus 40 memorize | stores the performance of the usage-heat amount used as warm water, for example, the driving performance of the heat pump unit 20, the hot water supply performance corresponding to hot water supply or hot water filling, etc. in the memory | storage part 402 continuously. The storage unit 402 can store, for example, a past record of the amount of heat used including the operation results of the heat pump unit 20 for a predetermined period, and an old result that protrudes from the predetermined period is rewritten with a new result at any time. The storage unit 402 stores the actual amount of heat used for the past week as an example of the predetermined period. And, as for the record of the amount of heat used for one week, when the latest one-day record is stored, the oldest one-day record is deleted from the storage unit 402 and the most recent one-day record is written. become.

  The memory | storage part 402 can memorize | store various bather information regarding the bather who uses the bathtub 80. FIG. The storage unit 402 stores bather information for a predetermined period. And, as for the results of bather information for a predetermined period, when the latest one-day results are stored, the oldest one-day results are erased from the storage unit 402 and the most recent one-day results are written. It will be.

  The memory | storage part 402 can memorize | store bather information including the amount of rise of the water level of the bathtub 80 when there is a bather, and at least one of bathing start time, bathing end time, and bathing time. Further, the storage unit 402 learns bather information, generates bathing pattern learning information, and stores it.

  The operation control unit 400 of the control device 40 controls the automatic drain plug 50, the controller 41 in the bathroom, the controller 42 outside the bathroom, and the like based on the water level signal from the water level sensor 66, the determination result of the determination unit 401, and the like. Therefore, the operation control unit 400 controls the operation of the heat pump unit 2 related to the boiling operation, the hot water operation when the automatic hot water operation to the bathtub 80 is set, the drain operation for draining the remaining hot water of the bathtub 80, and the like. .

  The in-bathroom controller 41 is a remote controller that is provided on the wall of the bathroom and includes a switch unit that can be operated by a bather and a display unit that displays a driving state. The non-bathroom controller 42 has the same configuration as the in-bathroom controller 41, and is a remote control provided on a wall of a room other than the bathroom, for example, a wall of a kitchen or a living room. These controllers are provided with a hot water supply set temperature switch, a bath automatic switch, a hot water set temperature switch, a reheat switch, a reheat set temperature switch, a bath heat recovery switch, and the like as operation switches. Each part of the hot water supply device other than the controller, the bathtub 80, and the shower is installed at an appropriate place such as outdoors.

  Next, the operation mode which the hot water supply apparatus 100 implements is demonstrated. The hot water supply device 100 is a reheating operation for heating the bath water, a bath heat recovery operation for recovering the heat of the bath water in the tank 10, and a heating operation of the heat pump unit 20 (hereinafter also referred to as an HP boiling operation). Each operation mode can be implemented.

(Reaping driving)
In the reheating operation, the control device 40 controls the primary circulation pump 75 and the switching valve 22, thereby reheating the hot water heated in the upper part of the tank 10 and the heat pump unit 20 by reheating the heat exchanger 73. It distribute | circulates to the hot water supply water side channel | path 73b. Further, the control device 40 drives the bath circulation pump 67 to circulate the bath water in the bath water circuit 71 and circulate it in the bath water side passage 73a of the reheating heat exchanger 73, and the hot water supply water side passage 73b. Heat with flowing water to heat.

(Bath heat recovery operation)
The control device 40 determines the amount of heat of the bathtub water based on an input signal input from the bath heat recovery switch of the controller 41 in the bathroom or the controller 42 outside the bathroom by the user, or a signal when a predetermined condition is established in the automatic operation. Utilizing it, heat recovery to the lower part of the tank 10 is performed. The case where the predetermined condition is satisfied is that a certain time (for example, 2 hours) has passed since the automatic operation was completed. In the bath heat recovery operation, the control device 40 controls the primary circulation pump 75 and the switching valve 22, thereby supplying water in the lower part of the tank 10 via the bypass pipe 23 and hot water supply for the reheating heat exchanger 73. It distribute | circulates to the water side channel | path 73b. At this time, the switching valve 22 is controlled so as to set a communication passage that allows the passage of the bypass pipe 23 to communicate with the hot water supply water side passage 73b.

  Further, the control device 40 drives the bath circulation pump 67 to circulate the bath water in the bath water circuit 71 and circulate it in the bath water side passage 73a of the reheating heat exchanger 73. Water in the lower part of the tank 10 flowing through the passage 73b is heated. The water in the lower portion of the tank 10 heated by the reheating heat exchanger 73 flows into the intermediate portion of the tank 10 from the tank inflow portion 74c, and the heat amount of the bathtub water is recovered in the tank 10. In this way, the reheating heat exchanger 73 is a reheating heat exchanger for a bath and a heat exchanger for recovering a bath heat that can recover the heat of the bath.

(Boiling operation of heat pump unit 20)
The control device 40 instructs the heat pump unit 20 to operate, circulates the stored hot water on the lower side in the tank 10 to the heat pump side circuit 21, heats it with the heat pump unit 20, and heats the heated hot water to the tank. The HP boiling operation which is stored in 10 is performed. The HP boiling operation for storing hot water in the tank 10 includes a first boiling operation and a second boiling operation. In the first boiling operation, water in the lower part of the tank 10 is boiled by the heat pump unit 20, but when the temperature is not yet sufficient, the switching valve 22 causes the outlet passage of the heat pump unit 20 and the bypass pipe 23 to flow. This is an operation for setting a communication path for communication. In the first boiling operation, low temperature hot water is prevented from flowing into the upper portion of the tank 10.

  In the second boiling operation, water in the lower part of the tank 10 is boiled by the heat pump unit 20 and reaches a certain temperature (predetermined temperature), and then the outlet valve and the discharge port 10e of the heat pump unit 20 are switched by the switching valve 22. It is the driving | operation which sets the communication path which connects. In the second boiling operation, hot water is taken into the upper part of the tank 10.

  Next, the control concerning the bathing state detection which the bathing state detection apparatus with which the hot water supply apparatus 100 is provided is demonstrated with reference to each flowchart of FIGS. FIG. 3 is a flowchart showing a bathing state detection processing procedure at an initial time when bathing pattern learning information is not yet stored. FIG. 4 is a flowchart showing a bathing state detection processing procedure using bathing pattern learning information already stored.

  FIG. 5 is a flowchart relating to bathing confirmation periodically performed after bathing, and proceeds simultaneously with the flowchart of FIG. 3 or FIG. Therefore, the flowchart of FIG. 5 starts when “YES” is determined in step 3 or step 103 described later. The process of the flowchart in FIG. 5 is executed by the control device 40. In step 200 of FIG. 5, it is determined whether or not the user is taking a bath based on the water level detected by the water level sensor 66 at predetermined time intervals (for example, every hour included in the range of 1 to 10 minutes). .

  If it is determined in step 200 that bathing is in progress, the processing shown in the flowchart of FIG. 3 or 4 is continued and the determination processing in step 200 is repeated. If it is determined in step 200 that bathing is not being performed, that is, if bathing is terminated, the processing shown in the flowchart of FIG. 3 or 4 is forcibly terminated. And when the power supply is supplied to the control apparatus 40, the control which concerns on the flowchart of FIG. 3 is started.

  The processing of the flowcharts of FIGS. 3 and 4 is executed by the control device 40. The control device 40 starts control according to the flowchart in a state where the power is turned on. First, in step 1 of FIG. 3, it is determined whether there is a bathing pattern or learning information stored in the storage unit 402. If there is already stored bathing pattern learning information or the like, the process proceeds to step 102 in the flowchart of FIG. 4, but if there is no stored bathing pattern learning information or the like, the process proceeds to step 2.

  In the next step 2, the input unit of the control device 40 acquires the water level detected by the water level sensor 66. If the determination unit 401 determines in step 3 that the acquired water level has risen by a predetermined value or more with respect to the previous water level, it is considered that a person has taken a bath and proceeds to step 4. If it is determined in step 3 that it has not risen by a predetermined value or more, the process returns to step 2 and the water level measurement process is repeated. The determination process in step 3 is repeated until it is confirmed that the water level is higher than a predetermined value, that is, until a person enters the bathtub 80.

  In step 4, a process for monitoring the bather's condition is started, and various acquired data are stored in the storage unit 402 as needed. Data to be monitored are the amount of rise in the water level after bathing before bathing, the bathing start time, the bathing end time, the time required for bathing, the degree of change in the water level during the bathing period, the time without water level change during the bathing period, and the like.

  The control device 40 stores the time when the water level detected by the water level sensor 66 is equal to or lower than the water level before bathing as a bathing end time, and further, takes the time required from the start of bathing to the end of bathing as the bathing time. Store in the storage unit 402. Furthermore, the control device 40 stores the amount of increase in the water level after bathing with respect to before bathing in the storage unit 402. Further, the control device 40 calculates the level of water level change and the time without water level change from the detected value of the water level acquired periodically during this bathing time, and stores it in the storage unit 402. The control device 40 can acquire bathing pattern learning information such as bathing habits and bathing habits peculiar to the bathing user by acquiring and storing these bather information.

  These various data stored in the storage unit 402 are compared with the bathing pattern learning information already stored, and are classified into any one of a plurality of groups. Further, the learning information related to this group classification is used in step 103A and step 108 described later.

  For example, when the acquired amount of water level rise is included in a corresponding range of the set plurality of ranges, the bather is classified into the corresponding group. This classifies the bather's specific volume, that is, a group that fits the size of the body, so that adults and children can be grouped into different groups, and men with large bodies and women with small bodies can be separated into different groups. Can be grouped into groups. In addition, bathers with a habit are characterized by bathing postures such as lying down or bathing in a half-body bathing posture, and classifying them reflecting specific bather information that cannot be accurately classified by body size alone be able to.

  In addition, for example, the bathing time specific to the bather also applies to children and grandparents whose bathing start time and bathing end time are included in the early hours after the evening, and fathers and mothers included in the time zone after 10:00. It is classified into a group that fits each band. In this way, classification suitable for the lifestyle of each family member can be performed.

  In addition, for example, a child or a man who takes a short bath, a woman who takes a bath for a long time, a user who watches TV or takes a half-body bath, and the like are also classified into groups suitable for bathing time specific to the bather. Thus, classification suitable for each family's bathing style can be performed.

  As described above, the control device 40 acquires various data that can be detected from the time when the bather is confirmed until the bathing is completed, and stores the data in the storage unit 402 as learning information. The control device 40 can generate bathing pattern learning information such as bathing habits and bathing habits peculiar to bathers by classifying the acquired bather information into a plurality of bathing patterns and into a plurality of groups. Can accurately recognize who the bather is.

  When monitoring in step 4 is started, next in step 5, the determination unit 401 determines whether or not the water level detected by the water level sensor 66 has a variation that satisfies a predetermined condition. This is because if the bather moves while taking a bath, the water level fluctuates. For example, if the determination unit 401 determines that the amount of water level change per predetermined time (for example, several minutes) is less than a predetermined value, the control device 40 determines both the controller 41 in the bathroom and the controller 42 outside the bathroom in the next step 6. Alerts to This warning notification is performed, for example, by a method of making an alarm sound from the controller 41 in the bathroom and the controller 42 outside the bathroom or blinking a warning lamp such as red.

  Next, in step 7, the control device 40 determines whether or not there is a response from the user via the controller 41 in the bathroom or the controller 42 outside the bathroom. If it is confirmed in step 7 that there is a response, the process returns to step 4 and monitoring is continued. If there is no abnormality in the bather, there should be a response from the bather to the control device 40 via the controller 41 in the bathroom. Also, even if there is no response from the controller 41 in the bathroom, if there is a response from a user such as a family other than the bather via the controller 42 outside the bathroom, the user thinks that some abnormality has occurred in the bather. You can go to the bathroom and take measures.

  On the other hand, when it is confirmed in step 7 that there is no response from any of the controllers, the process proceeds to step 15 where the control device 40 controls the automatic drain plug 50 to drain the water in the bathtub 80 to drain the bathtub 80. The mouth is opened and this flowchart is ended. Since the water in the bathtub 80 is drained by this automatic drainage treatment, it is possible to prevent the bather from becoming in a dangerous state due to loss of feeling or drowning in the bathtub 80.

  In step 5, if the determination unit 401 determines that the detected water level has a variation that satisfies a predetermined condition, for example, the amount of change in water level per predetermined time is greater than or equal to a predetermined value, the determination unit 401 proceeds to step 8. In step 8, the determination unit 401 determines whether or not the bathing time after detecting bathing in step 3 is longer than a predetermined time (for example, 20 minutes). In step 8, if the bathing time has not yet reached the time set as the default value, the process returns to step 4 to continue monitoring. In step 8, when the bathing time is equal to or longer than the time set as the default value, the process proceeds to step 9, and the control device 40 notifies both the in-bathroom controller 41 and the out-bathroom controller 42 of normality confirmation. For example, the confirmation notification is performed by a method of making a sound for confirmation from the controller 41 in the bathroom and the controller 42 outside the bathroom or blinking the confirmation lamp.

  Next, in step 10, the control device 40 determines whether or not there is a response from the user via the in-bathroom controller 41 or the outside-bathroom controller 42. If it is confirmed in step 10 that there is no response from any of the controllers, the process proceeds to step 15 where the control device 40 controls the automatic drain plug 50 to open the drain port of the bathtub 80 and ends this flowchart.

  If it can be confirmed in step 10 that there is a response, it is further determined in step 11 whether there is a fluctuation in the water level, as in step 5 above. If the determination unit 401 determines that there is no fluctuation in the water level, the control device 40 determines that there is a high possibility that the bather is still in a dangerous state, and proceeds to step 15 to control the automatic drain plug 50. The drain of the bathtub 80 is opened, and this flowchart is finished.

  If it is determined that there is a fluctuation in the water level, the determination unit 401 next determines in step 12 whether or not a predetermined time has elapsed after determining YES in step 8. This fixed time is a time shorter than the predetermined time in Step 8, for example, a time set in a range of 1 to 5 minutes. Steps 11 and 12 are repeatedly executed until it is determined in step 12 that a predetermined time has elapsed. Step 12 performs the same function as the so-called snooze function of the so-called alarm clock.

  When the determination unit 401 determines in step 12 that the predetermined time has elapsed, the control device 40 warns both the controller 41 in the bathroom and the controller 42 outside the bathroom in the next step 13 as in the previous step 6. report. In the next step 14, the control device 40 determines whether or not there is a response from the user via the in-bathroom controller 41 or the out-bathroom controller 42. And if it can confirm that there exists a response in step 14, it will return to step 11 and will continue monitoring of a water level fluctuation | variation.

  On the other hand, when it is confirmed in step 14 that there is no response from any of the controllers, the process proceeds to step 15 where the control device 40 controls the automatic drain plug 50 to drain the water in the bathtub 80 to drain the bathtub 80. The mouth is opened and this flowchart is ended.

  If it is determined in the determination process in the previous step 1 that there is already stored bathing pattern learning information or the like, the process proceeds to step 102 in the flowchart of FIG. In step 102, the water level detected by the water level sensor 66 is acquired as in step 2 above. If the determination unit 401 determines in step 103 that the acquired water level has risen by a predetermined value or more with respect to the previous water level, similarly to step 3, the process proceeds to step 103A. If it is determined in step 103 that the value has not risen by a predetermined value or more, the process returns to step 102 and the water level measurement process is repeated.

  In step 103A, as described above, the control device 40 executes a process of determining bathing pattern learning information corresponding to the current bather from a plurality of group classifications stored in the storage unit 402. As a result of comparing the bathing information obtained from the current bather, for example, the water level rise amount, the bathing start time, and the like with the bathing pattern learning information of each group stored in the storage unit 402, the control device 40 The group to which the bather belongs is extracted as a learning pattern candidate. In the determination process executed in subsequent steps, control device 40 creates a determination result by comparing the bathing pattern learning information of the group extracted in step 103A with the acquired current bather information.

  Next, the control apparatus 40 starts the process which monitors a bather's state by step 104 similarly to previous step 4, and also memorize | stores the acquired various data in the memory | storage part 402 at any time.

  When monitoring in step 104 is started, next in step 105, the determination unit 401 determines whether or not there is a fluctuation that satisfies a predetermined condition in the water level detected by the water level sensor 66. For example, when the determination unit 401 determines that the water level change amount per predetermined time (for example, several minutes) is less than the predetermined value, the control device 40 determines both the controller 41 in the bathroom and the controller 42 outside the bathroom in the next step 106. Alerts to

  Next, in step 107, the control device 40 determines whether or not there is a response from the user via the in-bathroom controller 41 or the outside-bathroom controller 42. If it can be confirmed in step 107 that there is a response, for example, it is determined that there is no abnormality in the bather or that there is no problem as a result of confirmation from the family or the like, the process returns to step 104 and monitoring is continued.

  On the other hand, when it is confirmed in step 107 that there is no response from any of the controllers, the process proceeds to step 115, where the control device 40 controls the automatic drain plug 50 to open the drain port of the bathtub 80 and ends this flowchart. To do. Since the water in the bathtub 80 is drained by this automatic drainage treatment, it is possible to prevent the bather from entering a dangerous state due to the bath water in the bathtub 80.

  In step 105, when the determination unit 401 determines that the detected water level has a variation that satisfies a predetermined condition, for example, the amount of change in the water level per predetermined time is greater than or equal to a predetermined value, the determination unit 401 proceeds to step 108A. In step 108A, the determination unit 401 extracts the bathing time of the person having the shortest bathing among the users included in the group extracted in step 103A, that is, the shortest bathing time. And the determination part 401 determines whether the present bather's bathing time is longer than the extracted shortest bathing time.

  If the current bathing time has not yet reached the shortest bathing time in step 108A, the process returns to step 104 and monitoring is continued. If the current bathing time exceeds the shortest bathing time in step 108A, the process proceeds to step 109, and the control device 40 notifies both of the bathroom controller 41 and the bathroom outside controller 42 of normality confirmation.

  Next, in step 110, the control device 40 determines whether or not there is a response from the user via the in-bathroom controller 41 or the outside-bathroom controller 42. When it is confirmed in step 110 that there is no response from any of the controllers, the process proceeds to step 115, where the control device 40 controls the automatic drain plug 50 to open the drain port of the bathtub 80, and ends this flowchart.

  If it can be confirmed in step 110 that there is a response, it is further determined in step 111 whether or not there is a fluctuation in the water level, as in step 105 above. If the determination unit 401 determines that there is no fluctuation in the water level, the control device 40 determines that there is a high possibility that the bather is still in a dangerous state, and proceeds to step 115 to control the automatic drain plug 50. The drain of the bathtub 80 is opened, and this flowchart is finished.

  When determining unit 401 determines that there is a fluctuation in the water level, next in step 112A, the current bathing time is a time obtained by adding a predetermined time to the shortest bathing time used in the determination process of step 108A. To determine whether it is long. This fixed time is shorter than the shortest bathing time in the previous step 108A, and is the same time as the fixed time used in the determination process in the previous step 12.

  When the determination unit 401 determines in step 112A that the time has elapsed (YES), the control device 40 determines whether the controller 41 in the bathroom and the controller 42 outside the bathroom are in the next step 113 as in the previous step 106. Alert both. This warning is performed not only by lighting and blinking of the lamp, but also in a form that promotes urgency using a warning sound, voice, or the like. In the next step 114, the control device 40 determines whether or not there is a response from the user via the in-bathroom controller 41 or the out-of-bathroom controller 42. And if it can confirm that there exists a response in step 114, it will return to step 111 and will continue monitoring water level fluctuation | variation.

  On the other hand, when it is confirmed in step 114 that there is no response from any of the controllers, the process proceeds to step 115 where the control device 40 controls the automatic drain plug 50 to drain the water in the bathtub 80 to drain the bathtub 80. The mouth is opened and this flowchart is ended.

  Below, the effect which a bathing state detection apparatus brings is demonstrated. The bathing state detection device includes a water level sensor 66 that detects the water level of the bathtub 80, a storage unit 402 that stores bathing pattern learning information, and a determination unit 401 that determines whether an abnormality has occurred in the current bather. Is provided. The storage unit 402 stores bathing pattern learning information obtained by learning bather information including the amount of rise in the water level of the bathtub 80 and the bathing start time, bathing end time, and bathing time when there is a bather. Remember. The determination unit 401 extracts bathing pattern learning information suitable for the bather currently taking a bath from a plurality of bathing pattern learning information stored in the storage unit 402, and based on the extracted bathing pattern learning information. Determine that an abnormality has occurred in the current bather.

  According to this, the bathing state detection device learns bather information including the amount of rise in the water level of the bathtub 80 and at least one of the bathing start time, bathing end time, and bathing time when the bather is in the bath 80. The bathing pattern learning information generated in this way is stored. When there are a plurality of users using the same bathtub, the bathing state detection device stores unique bathing pattern learning information corresponding to each person. The bathing state detection device extracts learning information suitable for the current bather from the stored bathing pattern learning information when there is a bather, and the current bather is abnormal based on the extracted learning information. It is determined whether or not it is in a state. Thereby, when there are a plurality of users who use the bathtub, it can be determined whether or not the current bather is abnormal by comparing with the bathing pattern unique to that person.

  For example, in the storage unit 402, bather information such as total time in the bath 80, continuous bathing time, bathing end time, level of water level change, time without water level change, etc. is learned and stored as bathing pattern learning information. Is done. These pieces of learning information vary depending on the user, and the bathing state detection device can acquire features such as bathing habits and bathing habits for individual users from the bathing pattern learning information. For example, when a bather loses his mind, stops cardiopulmonary, or falls asleep, the information obtained from the current bathing state is compared with the bathing pattern learning information obtained from past bathing results. A big difference with the bather. Therefore, the bathing state detection device can detect this difference and determine whether the bather is now in an abnormal state.

  The storage unit 402 stores the time when the water level detected by the water level sensor 66 is equal to or lower than the water level before bathing as the bathing end time, and further takes the time required from the start of bathing to the end of bathing. Remember as time. Furthermore, the memory | storage part 402 memorize | stores the water level rise amount after bathing with respect to before bathing. And the memory | storage part 402 memorize | stores the degree of the water level change calculated using the detected value of the water level regularly acquired during the said bathing time, or the time without water level change as bathing pattern learning information.

  According to this, for example, when the bather loses his mind, stops cardiopulmonary, or falls asleep, the current bather is compared with the stored bathing pattern learning information corresponding to the normal state. Can be detected. The determination unit 401 can determine that the bather is now in an abnormal state by the determination process based on the bathing pattern learning information.

  In addition, according to the bathing state detection device, the user does not have to input personal information such as height, weight, sex, age, etc. by performing a comparison with bathing pattern learning information obtained from past bather information. In addition, the abnormal state can be determined according to the characteristics of the user. Further, it is possible to carry out a judgment specialized for each user without requiring the user to input data.

  The plurality of bathing pattern learning information stored in the storage unit 402 is learning information that is classified into a plurality of groups by classifying bather information into a plurality of bathing patterns. Control device 40 extracts a group that matches bather information detected from the current bather from a plurality of groups (step 103A). The determination unit 401 determines whether or not an abnormality has occurred in the current bather based on the bathing pattern learning information corresponding to the extracted group (steps 108A and 109).

  According to this, by storing and learning bather information obtained from past bathing results, it is possible to divide into groups by paying attention to the difference of each bather information data. By classifying into groups, it is possible to classify each user by belonging to at least one of the groups, so that the features of a large number of bather information can be simplified. Therefore, when there is an actual bather next time, it is easy to estimate who the current bather is among multiple users by determining which group the bather belongs to. It is possible to realize abnormality determination by simplified processing.

  In addition, the determination unit 401 generates an abnormality in the current bather when the bathing time of the current bather is longer than the shortest bathing time among the bather information included in the group extracted in step 103A. (Step 108A, Step 109).

  According to this, early abnormality determination can be implemented by comparing the bathing time of the current bather with the shortest bathing time in the information included in the extracted group. For example, some bather information included in the same group has different bathing times stored as learning information. That is, there is information including a plurality of bathing times and bathing times shorter than others. By performing an abnormality determination based on the shortest bathing time from among these multiple bathing times, if an abnormality occurs when the user corresponding to the shortest bathing time information is bathing, It can be detected reliably. Therefore, according to this abnormality determination process, abnormality determination closer to safety can be performed, so that the abnormal state of the bather can be detected early or reliably.

  Moreover, if the determination part 401 determines abnormality of the present bather, it will report to the controller 41 in the bathroom and the controller 42 outside the bathroom installed in the bathroom (step 109). When there is no response from the controller 41 in the bathroom or the controller 42 outside the bathroom, the water in the bathtub 80 is drained (steps 110, 114, 115).

  According to this, when the bather has an abnormality, etc., the bather cannot react or operate, or when there is no family member or not noticed, it prevents drowning by the water in the bathtub. can do.

  In addition, after determining that the bather is abnormal, the control device 40 further passes the water in the bathtub 80 when there is no response from the controller 41 in the bathroom or the controller 42 outside the bathroom after a predetermined time has elapsed. Drain (steps 112A, 113, 114, 115).

  According to this, after determining the abnormality of the bather, for example, even when there is a reaction from the bather that there is no problem, if there is no response after a certain time, automatic drainage is performed. In this way, once the bather recovers consciousness and then loses consciousness, the automatic drainage process after reconfirmation can be performed to further enhance the safety of the bather.

(Second Embodiment)
In the second embodiment, another embodiment for the bathing state detection control of the first embodiment will be described with reference to FIGS. 6 and 7. In FIG. 6, steps denoted by the same step numbers as in FIG. 4 are the same processing and have the same effects. Only the contents different from the first embodiment will be described below.

  FIG. 6 is a flowchart showing a bathing state detection processing procedure using bathing pattern learning information already stored. FIG. 7 is a subroutine executed in step 103B of FIG. 6 and shows a processing procedure for displaying a history relating to bather information on the controller.

  As illustrated in FIG. 6, when it is determined in step 103 that the acquired water level is higher than the previous water level by a predetermined value or more, the process proceeds to step 103A. In step 103A, as described above, processing for determining bathing pattern learning information corresponding to the current bather is executed from among a plurality of group classifications stored in the storage unit 402. The control device 40 compares, for example, a water level rise amount, a bathing start time, a bathing end time, a bathing time, and the like related to the current bather with the bathing pattern learning information of each group stored in the storage unit 402. As a result of comparing the data relating to the current bather and the stored learning information, the control device 40 determines the group to which the current bather belongs, and extracts it as a learning pattern candidate used in later determination processing.

  The control device 40 executes the display routine of the next step 103B using the processing result at step 103A. As shown in FIG. 7, in step 300, the control device 40 reads bather information included in the group extracted as the learning pattern candidate from the storage unit 402. The bather information to be read includes a bathing start time, a bathing end time, a bathing time, and the like in a past predetermined period.

  In the next step 301, the operation control unit 400 executes a process of displaying the history of the read bather information on the display unit 410 of the bathroom controller 41 and the display unit 420 of the controller 42 outside the bathroom. Accordingly, at least one of the bathing start time, the bathing end time, the bathing time, and the like in the past predetermined period is displayed on each of the display unit 410 and the display unit 420 of the bathroom and the controller outside the bathroom.

  The bather can check the history of the bathing start time, bathing end time, and bathing time for one week, for example, by looking at the display unit 410 of the controller 41 in the bathroom. For example, the bather can confirm one of his / her life patterns by knowing the latest bathing start time and bathing end time. Other users other than the bather can check the history of the bathing start time, bathing end time, and bathing time for one week, for example, by looking at the display unit 420 of the controller 42 outside the bathroom. For example, a user other than the bather can know when the current bather will come out of the bathroom by knowing the bather's recent bathing time and bathing end time. If the bather does not come out of the bathroom even after the estimated time has elapsed, a user other than the bather can act to confirm the bather's condition. As described above, according to the display routine of step 103B, it is possible to support early detection that the bather is in a dangerous state due to loss or drowning.

  These histories can be displayed so as to be visible, for example, by digital numbers, bar graphs, or line graphs. The displayed bathing time history employs the shortest bathing time data or the average bathing time data among bather information included in the group. When the shortest time is adopted, it becomes possible to detect early when the actual bather becomes in a dangerous state in a short time after bathing.

  Further, the displayed bathing start time history employs data that is close to the time when the current bather bathed in the bather information included in the group. In addition, in the displayed bathing end time history, the bathing information extracted from the bathing information included in the group is the data that is the bathing start time close to the time when the current bather bathed. The bathing end time data corresponding to the bathing at the start time is adopted. Thus, by determining the bathing start time and bathing end time to be displayed, it is possible to increase the probability that the display information adopted from the bather information included in the group is information about the actual bather.

  After displaying the bather information as described above on the display unit of each controller, the control device 40 starts a process of monitoring the bather's state in step 104 and further stores various acquired data in the storage unit 402 as needed. Remember. And the control apparatus 40 performs the process similar to after step 105 of FIG. 4 mentioned above in order.

  According to the second embodiment, among the bather information included in the group extracted by the determination unit 401, at least one history of past bathing time, bathing start time, and bathing end time is stored in the bathroom controller 41 and the bathroom. Displayed on the external controller 42. According to this, bathers and users other than bathers can check at least one history of past bathing time, bathing start time, and bathing end time about the bather through the controller without performing any special operations themselves. Can do.

(Third embodiment)
In the third embodiment, another embodiment for the bathing state detection control of the second embodiment will be described with reference to FIGS. 8 and 9. In FIG. 8, the reference numerals with the same numbers as those in FIG. 2 are the same components, and have the same effects. In FIG. 9, the steps denoted by the same step numbers as in FIG. 7 are the same processing and have the same effects. Only the content different from the first embodiment and the second embodiment will be described below. FIG. 9 shows a processing procedure in the subroutine executed in step 103B of FIG.

  As illustrated in FIG. 9, the operation control unit 400 executes a process of displaying the history of the read bather information on the display unit 410 of the controller 41 in the bathroom and the display unit 420 of the controller 42 outside the bathroom in step 301 </ b> A. . By this processing, the bath start time, bath end time, bathing time, etc. in the past predetermined period are displayed on the display unit 410 and the display unit 420 of the bathroom and outside the controller, respectively. The display at this time includes at least a bathing time. The bathing time displayed on the controller at this time is the shortest bathing time extracted by the determination unit 401 in step 108A. This shortest bathing time is the bathing time of the person having the shortest bathing among the users included in the group extracted in step 103A.

  The bather can check the history of bathing time for one week, for example, for bather information related to at least the shortest bathing time by looking at the display unit 410 of the controller 41 in the bathroom. For example, the bather can check the shortest bathing time used when determining whether there is an abnormality during bathing by looking at the display unit 410 of the controller 41 in the bathroom while bathing. Moreover, the bather can confirm the shortest bathing time used when determining the presence or absence of abnormality during bathing, for example, before bathing, by looking at the display unit 420 of the controller 42 outside the bathroom before bathing.

  For example, a user other than a bather can guess when the current bather will come out of the bathroom by knowing the bather's recent bathing time. If the bather does not come out of the bathroom even after the estimated time has passed, the user other than the bather can be motivated to confirm the bather's condition. As described above, according to the display process in step 301A, it is possible to support early detection that a bather is in a dangerous state due to loss of feeling or drowning.

  When various history information including at least the bathing time is displayed on the display unit of each controller in step 301A, the control device 40 obtains a command to change the shortest bathing time used for subsequent abnormality determination in step 302. Determine whether or not.

  As illustrated in FIG. 8, the in-bathroom controller 41 includes a determination time changing unit 411, and the outside-bathroom controller 42 includes a determination time changing unit 421. The determination time changing unit 411 is an operation means that can change the shortest bathing time displayed on the display unit, which is used when the determination unit 401 determines whether or not the bather has an abnormality. For example, the operation means includes a button that can set the time longer, a button that can set the time shorter, and a button that determines the set time. The determination time changing unit 421 is an operation unit having the same configuration as the determination time changing unit 411. Therefore, a bather or a user other than a bather operates the determination time changing unit 411 and the determination time changing unit 421 to change the shortest bathing time used for the subsequent abnormality determination to an effective time. Can do. For example, if you want to bathe longer than usual, or if you plan to read a book or take a half-body bath during bathing, you can set the bathing time that can be assumed by operating the judgment time changing unit 421 and the judgment time changing unit 411. By changing, it becomes possible to execute the determination at an appropriate timing.

  When the determination time changing unit 411 or the determination time changing unit 421 is not operated by a bather or a user other than the bather, the control device 40 determines in step 302 that the change instruction for the shortest time is not acquired, and displays this display routine. Then, the process proceeds to step 104 in FIG. In this case, the shortest bathing time stored in the storage unit 402 is used in the determination processing in step 108A and step 112A.

  When the determination time changing unit 411 or the determination time changing unit 421 is operated and the changed shortest bathing time is input to the control device 40, the control device 40 has acquired a change instruction for the shortest bathing time in Step 302. And the process proceeds to Step 303. In step 303, the control device 40 executes a process of rewriting the shortest bathing time used by the determination unit 401 for the determination in step 108A or step 112A with the shortest bathing time changed by the bather or the like, and the display routine in step 103B is executed. finish.

  After executing the processing of the display routine in step 103B as described above, the control device 40 starts processing for monitoring the state of the bather in step 104, and further stores various acquired data in the storage unit 402 as needed. . And the control apparatus 40 performs the process similar to after step 105 of FIG. 4 mentioned above in order. When the shortest bathing time is changed in step 303, the changed shortest bathing time is used in the determination processing in step 108A and step 112A.

  In addition, the shortest bathing time changed by the operation of the determination time changing unit 411 or the determination time changing unit 421 by the bather or the like is determined when the automatic drainage of step 115 is performed or when the flowchart of FIG. ). That is, the changed shortest bathing time does not rewrite the shortest bathing time stored in the storage unit 402, but temporarily rewrites the shortest bathing time used in the determination process of step 108A or step 112A.

  In addition, the shortest bathing time stored in the storage unit 402 is rewritten with the shortest bathing time changed by the bather or the like, and the stored data in the storage unit 402 is updated. You may use as the shortest bathing time used by a process.

  According to 3rd Embodiment, the control apparatus 40 displays the shortest bathing time among the bather information contained in the group extracted by the determination part 401 on the controller 41 in a bathroom and the controller 42 outside a bathroom (step 301A). ). Each of the controller 41 in the bathroom and the controller 42 outside the bathroom has a determination time changing unit 411 and a determination time changing unit 421 that can change the shortest bathing time used when the determination unit 401 determines whether or not the current bather is abnormal. Is provided.

  According to this, a bather etc. can change the shortest bathing time used for determination in step 108A or step 112A by operating the determination time change part 411 or the determination time change part 421 (step 303). . For example, when it is known that bathing to be performed will be different from usual bathing time, it is possible to prevent erroneous determination of abnormal conditions by changing the shortest bathing time used by bathers etc. it can. Therefore, it is possible to provide a bathing state detection device capable of improving the reliability of the abnormality presence / absence determination.

(Fourth embodiment)
In the fourth embodiment, another embodiment for the bathing state detection control of the first embodiment will be described with reference to FIG. In FIG. 10, steps denoted by the same step numbers as those in FIGS. 4 and 6 are the same processing, and have the same effects. In the fourth embodiment, only contents different from the first embodiment and the second embodiment will be described.

  FIG. 10 is a flowchart showing a bathing state detection processing procedure using bathing pattern learning information already stored. In step 103B of FIG. 10, either the flowchart relating to the display routine of FIG. 7 of the second embodiment or the flowchart relating to the display routine of FIG. 9 of the third embodiment may be executed.

  In step 104, the bathing state detection control of the fourth embodiment is performed by storing the amount of rise in water level after bathing, the time of bathing start, the time of bathing end, the time required for bathing, the amount of rise in water level during the bathing period, etc. To remember. As described above, in step 104, the storage unit 402 stores, as the bathing pattern learning information, the amount of water level increase during bathing that is calculated using the detected water level level periodically acquired during the bathing time.

  As shown in FIG. 10, it is determined in step 110 whether or not there is a response from the user via the in-bathroom controller 41 or the out-of-bathroom controller 42. If it is confirmed in step 110 that there is a response, the process proceeds to step 111A. . In step 111A, the determination unit 401 determines whether the water level detected by the water level sensor 66 has a large fluctuation that satisfies a predetermined condition.

  The determination unit 401 determines, for example, whether or not the water level increase during bathing has been detected as a water level increase that is greater than the water level increase included in the group extracted in step 103A by a predetermined amount or more. This predetermined amount is set to a water level increase amount that is increased when a normal bathing posture, for example, a posture where the shoulder is used for hot water, is submerged to the head. That is, when the amount of rise in water level during bathing is greater than the amount of rise in water level included in the extracted group by a predetermined amount or more, it can be determined that the bather has been immersed in hot water to the head.

  When determining that there is no large water level fluctuation in step 111A, the control device 40 determines that there is no fear of submersion and proceeds to step 112A, and determines whether or not the current bathing time is long enough to determine that the current bathing time is abnormal. To do.

  When determining that there is a large water level fluctuation in step 111A, the control device 40 proceeds to step 113 and notifies the controller 41 in the bathroom and the controller 42 outside the bathroom that an abnormality has occurred. This notification is performed not only by lighting and blinking of the lamp, but also in a form that promotes urgency by a warning sound, voice, or the like.

  According to 3rd Embodiment, the memory | storage part 402 memorize | stores the time when the water level detected by the water level sensor 66 became below the water level before bathing as a bathing end time, and from bathing start to bathing end. Memorize the time required for bathing as a bathing time. Furthermore, the memory | storage part 402 memorize | stores the water level raise amount during bathing calculated using the detected value of the water level regularly acquired during bathing time as bathing pattern learning information. This bathing pattern learning information is learning information that classifies bather information into a plurality of bathing patterns and is classified into a plurality of groups. The determination unit 401 extracts a group that matches bather information detected from the current bather from a plurality of groups stored in the storage unit 402 (step 103A).

  The determination unit 401 determines that an abnormality has occurred in the current bather when the water level increase detected for the current bather is a predetermined amount or more greater than the water level increase included in the extracted group. (Step 111A). Furthermore, the control device 40 notifies the controller 41 in the bathroom and the controller 42 outside the bathroom that an abnormality has occurred (step 113).

  According to this, when the water level increase detected for the current bather exceeds the water level increase included in the extracted group by a predetermined amount or more, that is, when a significant water level increase is detected. It is determined that some abnormality has occurred. For example, it is determined that there is a change in posture during bathing and the body is deeply submerged. In such a situation, since there is a possibility of drowning, the control device 40 can notify the in-bathroom controller 41 and the out-of-bathroom controller 42 and prompt the act of confirming the bather's state.

(Other embodiments)
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. The structure of the said embodiment is an illustration to the last, Comprising: The scope of the present invention is not limited to the range of these description. The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

  In the embodiment described above, the numbers in the first digit or the tenth digit are the same as the numbers given to the steps in the flowchart in FIG. 3 among the steps in FIG. 4, and 1 is added to the number in the hundreds digit. Each step corresponding to the number is processed in the same manner as the step shown in FIG. Also, the corresponding steps in FIG. 4 are the same as the steps shown in FIG. 3 in terms of technical significance and operational effects.

  In addition, as another example of the bathing state detection device, the difference between the bathroom temperature and the bathroom outside temperature, the difference between the bathroom temperature and the bath water temperature, the difference between the bathroom outside temperature and the bath water temperature, and the like are larger than a predetermined value. In such a case, a warning display may be displayed on the controller 41 in the bathroom or the controller 42 outside the bathroom. In such a case, it is determined that an abnormality is likely to occur in the health condition of the bather, and the user can be alerted to the bather and users other than the bather.

  Further, the normal confirmation notification to the controller (step 109) and the warning notification to the controller (step 113) according to the above-described embodiment may be performed early. For example, the control device 40 corrects the shortest bathing time included in the learning pattern candidate to a short time in order to speed up the determination to proceed to step 109 or 113, and uses the corrected shortest bathing time to determine the previous step. Processing can be executed.

  In the embodiment described above, in order to further improve the discrimination accuracy in addition to comparing the bather information when performing the process (step 103A) of discriminating the bathing pattern learning information corresponding to the current bather, A discriminating material such as this may be used. For example, by acquiring image data of a bather with a camera and analyzing the acquired image data and stored image data, it is possible to accurately discriminate a bather having a similar physique. Moreover, you may make it aim at the improvement of the accuracy of bather discrimination | determination using the detection value of a water level sensor by adding the weight detection by a load sensor.

DESCRIPTION OF SYMBOLS 40 ... Control apparatus 41 ... Controller in bathroom 42 ... Controller outside bathroom 66 ... Water level sensor (water level detection means)
80 ... Bathtub 401 ... Determination unit 402 ... Storage unit

Claims (8)

Water level detection means (66) for detecting the water level of the bathtub (80);
A storage unit for storing bathing pattern learning information obtained by learning bather information including the amount of rise in the water level of the bathtub and at least one of bathing start time, bathing end time, and bathing time when there is a bather ( 402)
Extracting the bathing pattern learning information suitable for the bather currently bathing from the plurality of bathing pattern learning information stored in the storage unit, and based on the extracted bathing pattern learning information, the current A determination unit (401) for determining whether or not an abnormality has occurred in the bather;
Equipped with a,
The plurality of bathing pattern learning information is learning information classified into a plurality of groups by classifying the bather information into a plurality of bathing patterns,
The determination unit extracts a group that matches the bather information detected from the current bather from the plurality of groups, and has the shortest bathing among the bather information included in the extracted group. The bathing state detection apparatus , wherein when the bathing time of the current bather becomes longer than the time, it is determined that an abnormality has occurred in the current bather . Water level detection means (66) for detecting the water level of the bathtub (80);
A storage unit for storing bathing pattern learning information obtained by learning bather information including the amount of rise in the water level of the bathtub and at least one of bathing start time, bathing end time, and bathing time when there is a bather ( 402)
Extracting the bathing pattern learning information suitable for the bather currently bathing from the plurality of bathing pattern learning information stored in the storage unit, and based on the extracted bathing pattern learning information, the current A determination unit (401) for determining whether or not an abnormality has occurred in the bather;
With
The storage unit stores the time when the water level detected by the water level sensor (66) is equal to or lower than the water level before bathing as the bathing end time, and further takes the time required from the start of bathing to the end of bathing. Remember as time, and remember the amount of water level rise after bathing before bathing,
Further, the storage unit stores the degree of water level change or the time without water level change calculated using the detection value of the water level periodically acquired during the bathing time as the bathing pattern learning information. Bathing state detection device. The storage unit stores the time when the water level detected by the water level sensor (66) is equal to or lower than the water level before bathing as the bathing end time, and further takes the time required from the start of bathing to the end of bathing. Remember as time, and remember the amount of water level rise after bathing before bathing,
Further, the storage unit stores the degree of water level change or the time without water level change calculated using the detection value of the water level periodically acquired during the bathing time as the bathing pattern learning information. The bathing state detection device according to claim 1 . When the determination unit determines that the current bather has an abnormality, the controller (41) in the bathroom installed in the bathroom and the controller (42) outside the bathroom installed outside the bathroom notify the bathroom. 4. The bathing state detection device according to claim 1 , wherein when there is no response from an internal controller or the controller outside the bathroom, the water in the bathtub is drained . 5. When the determination unit determines the occurrence of abnormality of the current bather, the controller (41) in the bathroom installed in the bathroom and the controller (42) outside the bathroom installed outside the bathroom,
After further determines the abnormality, after a fixed time determined in advance, if there is no response from the bathroom controller or the full outer controller, claims, characterized in that for draining water in the bathtub The bathing state detection apparatus according to claim 1 or 3 . Among the bather information included in the group extracted by the determination unit , at least one history of past bathing time, bathing start time, bathing end time, a bathroom controller (41) installed in the bathroom and the bath claim 1, wherein the displaying the bathroom outside the installed bath outside controller (42), according to claim 3, bathing state detection device according to any one of claims 5. The determination unit displays the shortest bathing time among the bather information included in the extracted group, and the bathroom controller (41) installed in the bathroom and the bathroom controller (42) installed outside the bathroom. )
A determination time changing unit (411, 421) capable of changing the shortest bathing time used when the determination unit determines whether or not the current bather has an abnormality is provided in the controller in the bathroom and the controller outside the bathroom. The bathing state detection device according to any one of claims 1, 3, 5, and 6. Water level detection means (66) for detecting the water level of the bathtub (80);
A storage unit for storing bathing pattern learning information obtained by learning bather information including the amount of rise in the water level of the bathtub and at least one of bathing start time, bathing end time, and bathing time when there is a bather ( 402)
Extracting the bathing pattern learning information suitable for the bather currently bathing from the plurality of bathing pattern learning information stored in the storage unit, and based on the extracted bathing pattern learning information, the current A determination unit (401) for determining whether or not an abnormality has occurred in the bather;
With
The storage unit stores the time when the water level detected by the water level sensor (66) is equal to or lower than the water level before bathing as the bathing end time, and further takes the time required from the start of bathing to the end of bathing. Remember as time,
Further, the storage unit stores, as the bathing pattern learning information, a water level increase amount during bathing calculated using a detected value of the water level periodically acquired during the bathing time,
The bathing pattern learning information is learning information classified into a plurality of groups by classifying the bather information into a plurality of bathing patterns,
The determination unit extracts a group that matches the bather information detected from the current bather from the plurality of groups, and the amount of water level detected for the current bather is extracted. When the water level rise amount included in the group is greater than a predetermined amount, it is determined that an abnormality has occurred in the current bather, and a controller in the bathroom (41 ) and input bath state detecting device you characterized by notifying the the installed bath outside controller (42) to the outside of the bathroom.

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