WO2018189926A1

WO2018189926A1 - Air-cleaning device

Info

Publication number: WO2018189926A1
Application number: PCT/JP2017/030188
Authority: WO
Inventors: 勝司藤井
Original assignee: シャープ株式会社
Priority date: 2017-04-10
Filing date: 2017-08-23
Publication date: 2018-10-18
Also published as: TWI673459B; TW201837388A

Abstract

This air-cleaning device (100) comprises: a first determination unit (11) which determines at least whether a room to be subjected to air-cleaning is in a state in which there is nobody in the room, there are people in the room but little action, or there are people in the room and a great deal of action; a second determination unit (12) which determines at least whether the room to be subjected to air-cleaning is light or dark; and an operation control unit (13) which uses the determination results of the first determination unit (11) and the second determination unit (12) to control the operation of the air-cleaning function.

Description

Air cleaner

The present invention relates to an air cleaner equipped with a human sensor and an illuminance sensor.

Conventionally, an air cleaner equipped with a human sensor and an illuminance sensor is known. For example, Patent Literature 1 listed below discloses an air cleaner that controls whether or not a person is present and whether the output is controlled by using the brightness of the room.

Japanese Patent Publication “JP 2012-97955 A (published May 24, 2012)”

However, since the conventional technology as described above operates the air purifier without considering the degree of operation of the person who is present in the air cleaning target room, the air purifier is unnecessarily operated. There is a problem.

One aspect of the present invention has been made in view of the above-described problem, and aims to provide an optimal air environment by performing air cleaning control in accordance with the state of movement and brightness of a person in an air cleaning target room. To do.

In order to solve the above-described problems, an air cleaner according to one embodiment of the present invention is an air cleaner equipped with a human sensor that detects a human motion and an illuminance sensor that detects indoor brightness. From the detection signal of the human sensor, at least a state in which there is no person in the air-cleaning target room, a state in which there are few people in the air-cleaning target room, and a person in the air-cleaning target room From the first determination unit that determines which of the air-cleaning chambers and the detection signal from the illuminance sensor, at least whether the air-cleaning chamber is bright or the air-cleaning chamber is dark A second determination unit for determining, and an operation control unit for controlling the operation of the air purifying function using the determination results of the first determination unit and the second determination unit are provided.

According to one aspect of the present invention, there is an effect that the air purification control can be executed in accordance with the state of movement and brightness of a person in the air-cleaning target room.

It is a functional block diagram which shows schematic structure of the air cleaner which concerns on Embodiment 1 of this invention. It is a perspective view which shows the outline | summary of the said air cleaner. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 showing an outline of the air cleaner. It is a figure which arranges and shows the conditions used for an air cleaner to judge each state in an air cleaning object room. It is a functional block diagram which shows schematic structure of the air cleaner which concerns on Embodiment 2 of this invention. It is a figure which arranges and shows operation control in each state in an air purification object room of the above-mentioned air cleaner. It is a functional block diagram which shows schematic structure of the air cleaner which concerns on Embodiment 3 of this invention. It is a front view which shows the outline | summary of the said air cleaner. (A) And (b) is a figure shown about the relationship between the one part rotation angle of the said air cleaner, and the detection range of a human sensitive sensor.

Embodiment 1
An embodiment of the present invention will be described below with reference to FIGS.

The air purifier 100 has an air cleaning function for sucking in ambient air and removing foreign matters such as dust contained in the air, and further, a dehumidifying function for removing moisture contained in the air, and increasing the humidity of the air. A humidification function may be provided. An air cleaner having a humidifying function will be described in detail in a second embodiment.

Furthermore, the air cleaner 100 may include an ion generator for including ions in the air from which foreign substances have been removed. An ion generator discharges in air | atmosphere and produces | generates ion. The ion generator is preferably configured to generate positive ions H ⁺ (H ₂ O) m and negative ions O ²⁻ (H ₂ O) n in which m and n are arbitrary natural numbers, respectively. In this case, positive and negative ions attach to and react with the surface of airborne bacteria and viruses in the air, generating active species OH radicals (.OH) and hydrogen peroxide (H ₂ O ₂ ) on the surface, thereby sterilizing The effect can be demonstrated.

The air cleaner 100 combines the detection result of the human sensor 31 and the detection result of the illuminance sensor 32 to grasp the usage status of the air cleaner 100 by a person and provide an air environment according to the usage status. Is. In order to facilitate understanding of the air purifier 100, first, the outline of the air purifier 100 will be first arranged below.

(Outline of air purifier)
In the air purifier 100, the state of the air cleaning target chamber R is determined based on the detection result (output signal) of the human sensor 31 at least in a “state in which no person is present in the air cleaning target chamber R (hereinafter simply referred to as“ state Sp1 ”). ”)”, “A state in which there is a person in the air cleaning target room R and there is little movement (hereinafter simply referred to as“ state Sp2 ”)”, and “a person is in the air cleaning target room R”. It is determined whether the state is a state in which there are many operations (hereinafter, simply referred to as “state Sp3”).

In addition, the air purifier 100 determines that the air cleaning target chamber R is at least “a state in which the air cleaning target chamber R is bright (hereinafter simply referred to as“ state SL1 ”) based on the detection result (output signal) of the illuminance sensor 32. "Denoted)" and "the air cleaning target room R is in a dark state (hereinafter simply referred to as" state SL2 ")". The air cleaner 100 controls the operation of the air purifying function using the results of these determinations. The operation control using the results of these determinations performed by the air purifier 100 can be summarized as follows (1) to (4).

(1) State Sp3 is a situation in which dust is likely to flutter or a odor is likely to occur because a person is actively moving. The air cleaner 100 sets the sensor sensitivity level of at least one of the dust sensor 33 and the odor sensor 34 to “high”, increases the air flow rate more than usual, and quickly cleans the air. Specifically, when the sensor sensitivity level is set to “high”, in the case of the dust sensor 33, the criterion for determining the degree of the amount of dust detected by the dust sensor 33 is lowered, that is, a smaller amount of dust is removed. Even when it is detected, it is determined that “there is dust”. In the case of the odor sensor 34, the criterion for determining the degree of odor detected by the odor sensor 34 is lowered, that is, it is determined that “there is an odor” even when a smaller odor is detected.

(2) The state Sp1 is a state where there is no need for the air cleaner 100 to inform the person of the driving situation because there is no person in the air purification target room R. Therefore, the air cleaner 100 suppresses the display on the display unit 4 or turns off the light in consideration of energy saving.

(3) The state SL2 is a state where the air cleaner 100 is used in a quiet environment such as a person sleeping. Therefore, the air purifier 100 gently cleans the air by weakening the amount of air blown from itself.

(4) In the states other than (1) to (3) above, normal operation is performed.

(Details of air purifier)
Next, details of the configuration of the air cleaner 100 will be described with reference to FIGS. 1 to 3. FIG. 1 is a functional block diagram showing a schematic configuration of the air purifier 100. FIG. 2 is a perspective view showing an outline of the air cleaner 100. 3 is a cross-sectional view taken along the line AA in FIG.

As shown in FIGS. 1 to 3, the air purifier 100 shown in FIG. 1 includes a main body 1, a fan 2, a display unit 4, a suction port 6, an air purification filter 7, a control unit 10, an air outlet 20, and a human sensor. 31, an illuminance sensor 32, a dust sensor 33, and an odor sensor 34. In addition, in order to ensure the simplicity of description, the structure which is not directly related to this embodiment is abbreviate | omitted from description and a figure. However, in accordance with the actual situation of implementation, the air cleaner 100 may have the omitted configuration.

The suction port 6 is located at the lower part on the back of the main body and sucks air into the interior. An air purifying filter 7 is provided on the main body 1 side of the suction port 6 to remove dust from the sucked air. As the air cleaning filter 7, for example, a HEPA (High （Efficiency Particulate Air) filter can be used. Moreover, the air purifying filter 7 may use a deodorizing filter together.

The air outlet 20 is disposed at the upper part of the main body 1 and blows out clean air. The air outlet 20 is provided with a louver 22 that changes the direction of the wind.

The fan 2 is mounted inside a fan casing (not shown). When the air cleaning operation is performed, the fan 2 is driven, the air in the air cleaning target chamber R is taken into the main body 1 from the suction port 6, and the air cleaning filter 7 is passed through. In this process, dust contained in the air cleaning target chamber R is filtered out by the air cleaning filter 7. The air, from which dust has been removed and cleaned, is guided to the air outlet 20 through the inside of the fan casing and the air passage 8, and is discharged from the air outlet 20 into the air cleaning target chamber R. The operation of the fan 2 is controlled by an operation control unit 13 described later.

The human sensor 31 detects the movement of a person in the air cleaning target room R. The human sensor 31 includes, for example, a pyroelectric sensor. When the human sensor 31 is a pyroelectric sensor, the human sensor 31 captures a change in heat (infrared rays) generated by the movement of the human body and outputs a signal. The signal from the human sensor 31 outputs, for example, a low level signal when the human detection is “none”, and a high level signal when the human detection is “present” to the first determination unit 11 described later. Here, “none” of the human detection indicates that the human sensor 31 does not detect a human, that is, that there is no human in the air cleaning target room R. “Present” indicates that the human sensor 31 detects a person, that is, that there is a person in the air cleaning target room R.

Specifically, the human sensor 31 acquires the presence / absence of heat transfer every predetermined time, and determines the presence / absence of human detection based on the acquired presence / absence of heat transfer. The predetermined time is, for example, 25 milliseconds. The presence sensor 31 determines that the presence / absence of a change in the heat acquired at each predetermined time is “existence” when the “existence of heat transfer” is 4 times or more in 10 times, for example. When it is below, it judges with person detection “nothing”. If it is determined that the person detection is “present”, a High level signal indicating the person detection “Yes” is output to the first determination unit 11. Output to the first determination unit 11.

The illuminance sensor 32 detects the brightness in the air cleaning target room R. Specifically, the illuminance sensor 32 detects (sensing) the illuminance in the air cleaning target room R, and outputs the detected illuminance level to the second determination unit 12 as a detection result.

The display unit 4 displays the operating state of the air cleaner 100 and the like. The display unit 4 includes, for example, the environment in the air cleaning target room R such as the cleanliness (amount of dust, etc.), temperature, and humidity of the air in the air cleaning target room R (particularly, in the air cleaning target room R). For example, information relating to the air condition) may be displayed. The display of the display unit 4 is controlled by an operation control unit 13 described later.

(Odor sensor and dust sensor)
The air cleaner 100 includes at least one of a dust sensor 33 and an odor sensor 34. For example, as shown in FIG. 3, the dust sensor 33 and the odor sensor 34 are arranged on the front surface of the main body 1. When the sensor sensitivity level of at least one of the dust sensor 33 and the odor sensor 34 is set to “high”, the air cleaner 100 quickly detects and removes dust and odor. In other words, the air cleaner 100 quickly detects and removes dust and odor when the air cleaning function is executed by increasing the sensor sensitivity level of at least one of the dust sensor 33 and the odor sensor 34.

The dust sensor 33 detects the amount of dust in the air cleaning target chamber R, and the detection result is output, for example, to a location that controls the operation of the air cleaning function. The dust sensor 33 may be a sensor that senses not only dust but also fine particles such as pollen and PM2.5. The odor sensor 34 detects odor and outputs the odor level. For example, a well-known sensor such as a sensor made of a metal oxide semiconductor can be used. The odor sensor 34 may be a sensor that senses not only odor but also gas.

(Memory part)
The storage unit 110 stores various data used by the air purifier 100. That is, the storage unit 110 executes (1) a control program executed by the air purifier 100, (2) an OS program, (3) an application program for executing various functions, and (4) when the application program is executed. Various data to be read are stored. The above data (1) to (4) are, for example, ROM (read only memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), HDD (Hard Disc Drive), etc. It is stored in a non-volatile storage device. In addition, the storage unit 110 particularly stores a first determination table 120 and a second determination table 130.

In the first determination table 120, a first determination unit 11 described later makes a determination on the presence / absence and movement of a person (user) in the air cleaning target room R from the detection signal from the human sensor 31. Stores conditions (judgment criteria).

The second determination table 130 stores conditions (determination criteria) for the second determination unit 12 to determine the illuminance in the air cleaning target room R from the detection signal from the illuminance sensor 32.

(Control part)
The control unit 10 controls the functions of the air purifier 100 in an integrated manner. The illustrated control unit 10 includes a first determination unit 11, a second determination unit 12, and an operation control unit 13 as functional blocks.

Each functional block of the control unit 10 described above is, for example, a storage device (storage unit 110) in which a CPU (central processing unit) or the like is realized by a ROM (read only memory), an NVRAM (non-volatile random access memory), or the like. Can be realized by reading the program stored in the RAM (random access memory) (not shown) and executing the program.

The operation control unit 13 controls the operation state of the air cleaning function using the determination results of the first determination unit 11 and the second determination unit 12 described later. Specifically, at least the following (1) to (3) are controlled. (1) Air flow rate of the fan 2, (2) Display on the display unit 4, and (3) Sensitivity level of the dust sensor 33 and the odor sensor 34.

When the state Sp3 is determined by the first determination unit 11, the operation control unit 13 (1) increases the air flow rate of the fan 2, and (2) increases the sensor sensitivity levels of the dust sensor 33 and the odor sensor 34. To do.

Further, when the state Sp1 is determined by the first determination unit 11, the operation control unit 13 suppresses the brightness of the display unit 4 or turns off the light.

Moreover, if the 2nd determination part 12 determines with it being in state SL2, the operation control part 13 will reduce the ventilation volume of the fan 2, and will clean the air in the air purification object room R quietly. This is because the air purifier 100 is considered to be used in a quiet environment such as a person sleeping. However, when it is determined by the second determination unit 12 that the state is Sp1 and it is determined that the state is SL2, the operation control unit 13 increases the air flow rate of the fan 2.

In addition, when it determines with it being in state SL2 and it is determined that it is in state Sp3, it can be set suitably which operation of state SL2 or state Sp3 is prioritized. In addition, the operation control unit 13 assumes that the state is Sp2 when the air cleaner 100 starts up, and starts operation.

(Determining “not present / not moving / moving much”)
The determination of “not present / not moving / moving much” will be described with reference to FIGS. 1 and 4. FIG. 4 is a diagram showing the conditions used by the air purifier 100 to determine each state in the air cleaning target chamber R.

The first determination unit 11 refers to a first determination table 120 described later and determines at least one of the state Sp1, the state Sp2, and the state Sp3. The first determination unit 11 determines the above three states and outputs a determination result to the operation control unit 13. The first determination unit 11 includes an output value acquisition unit 111, a motion degree determination unit 112, a non-detection time measurement unit 113, and a presence / absence determination unit 114.

The output value acquisition unit 111 acquires, for example, an output value (human detection “present” / human detection “none”) from the human sensor 31 at predetermined time intervals. The acquired output value is held in a memory or the like for at least a period corresponding to a determination time described later. In the following, it is assumed that the output value acquisition unit 111 acquires the output value of the human detection “present” or the human detection “none” from the human sensor 31. It may be expressed as detecting.

The motion degree determination unit 112 refers to the output value acquired and held by the output value acquisition unit 111, calculates the total time Ts of human detection “present” within the latest determination time, and based on this Determine the degree of human movement.

The degree-of-motion determination unit 112 determines the degree of human movement using different determination times for the state Sp2 and the state SL1, and the state Sp2 and the state SL2.

Specifically, the determination time when the state is Sp2 and the state SL1 (hereinafter referred to as the first light time determination time) is the determination time when the state is Sp2 and the state SL2 ( Hereinafter, it is shorter than the first dark determination time). For example, the determination time for the first bright time is “1 minute”, and the determination time for the first dark time is “5 minutes”.

The degree-of-motion determination unit 112 obtains the number of acquisitions of the human detection “present” from the output value corresponding to the latest determination time, and multiplies the obtained number of acquisitions by the period time second that is the acquisition period ts to obtain the total time. Ts is calculated. For example, if the cycle time is 0.1 second and the number of acquisitions of the human detection “present” within the time corresponding to the latest determination time is 500 times, the total time Ts is 500 times × 0.1 seconds. 50 seconds.

The degree-of-motion determination unit 112 compares the total time Ts of human detection “present” within the determination time and the threshold time to determine the degree of human movement (that is, whether the human movement is large or small). To do.

The motion degree determination unit 112 determines the degree of human motion using different threshold times for the state Sp2 and the state SL1, and for the state Sp2 and the state SL2.

Specifically, the threshold time when the state is Sp2 and the state SL1 (hereinafter referred to as the first light-time threshold time) is the threshold time when the state is Sp2 and the state SL2 ( Hereinafter, it is shorter than the first dark threshold time). For example, the first light time threshold time is “25 seconds”, and the first dark time threshold time is “30 seconds”.

That is, when the state is Sp2 and the state is SL1, the motion degree determination unit 112 performs the following comparison. The degree-of-motion determination unit 112 compares the total time Ts of human detection “present” and “25 seconds (first light time threshold time)” in the latest “one minute (first light time determination time)”. . If the total time Ts of the human detection “present” is 25 seconds or more, the movement degree determination unit 112 determines that the state Sp2 has shifted to the state Sp3, and the total time of the human detection “present” is less than 25 seconds. In this case, it is determined that the state Sp2 remains unchanged.

Moreover, when it is in the state Sp2 and in the state SL2, the motion degree determination unit 112 performs the following comparison. The degree-of-motion determination unit 112 compares the total time Ts of human detection “present” and “30 seconds (first dark threshold time)” in the latest “5 minutes (first dark determination time)”. . If the total time Ts of the human detection “present” is 30 seconds or more, the movement degree determination unit 112 determines that the state Sp2 has shifted to the state Sp3, and the total time of the human detection “present” is less than 30 seconds. In this case, it is determined that the state Sp2 remains unchanged.

Furthermore, the degree-of-movement determination unit 112 uses the same determination time for the state Sp3 and the state SL1, and when the state Sp3 and the state SL2 are determined. Determine.

Specifically, the determination time when the state is Sp3 and the state SL1 (hereinafter referred to as the second light time determination time) is the determination time when the state is Sp3 and the state SL2 ( Hereinafter, it is the same as the second dark determination time). For example, in the state Sp3, the second light time determination time and the second dark time determination time are “5 minutes”.

The movement degree determination unit 112 compares the total time Ts of human detection “present” within the determination time with the threshold time to determine the degree of human movement.

The degree-of-motion determination unit 112 determines the degree of human motion using the same threshold time for the state Sp3 and the state SL1 and for the state Sp3 and the state SL2. To do.

Specifically, the threshold time when the state is Sp3 and the state SL1 (hereinafter, the second light time threshold time) is the threshold time when the state is Sp3 and the state is SL2 (hereinafter, the second time) This is the same as the dark threshold time). For example, the second light time threshold time and the second dark time threshold time are “30 seconds”.

That is, when the state is Sp3 and the state is SL1, the motion degree determination unit 112 performs the following comparison. The degree-of-motion determination unit 112 compares the total time Ts of human detection “present” and “30 seconds (second light time threshold time)” in the latest “5 minutes (second light time determination time)”. . If the total time Ts of the human detection “present” is less than 30 seconds, the movement degree determination unit 112 determines that the state Sp3 has shifted to the state Sp2, and the total time of the human detection “present” is 30 seconds or more. In this case, it is determined that the state Sp3 remains unchanged.

Further, when the state is Sp3 and the state is SL2, the motion degree determination unit 112 performs the following comparison. The degree-of-motion determination unit 112 compares the total time Ts of human detection “present” and “30 seconds (second dark time threshold time)” in the latest “5 minutes (second dark time determination time)”. . If the total time Ts of the human detection “present” is less than 30 seconds, the movement degree determination unit 112 determines that the state Sp3 has shifted to the state Sp2, and the total time of the human detection “present” is 30 seconds or more. In this case, it is determined that the state Sp3 remains unchanged.

Also, the determination of the person's movement degree by the movement degree determination unit 112 is performed every minute. Further, when the state Sp2 is shifted to the state Sp3, the determination of the degree of human movement is not performed for a predetermined standby time (for example, 5 minutes), and the operation of the air cleaner 100 in the state Sp3 is performed for the predetermined standby time. Further, in the state SL2, even when the state Sp3 is shifted to the state Sp2, the determination of the degree of human movement is not performed for a predetermined standby time (for example, 5 minutes), and the operation of the air cleaner 100 in the state Sp2 is performed for the predetermined standby time. Do time.

The non-detection time measurement unit 113 refers to the output value acquired and held by the output value acquisition unit 111 and detects human detection “present” immediately after detecting the latest human detection “present”. Non-detection time (non-detection period) that is not performed is calculated.

The presence / absence determination unit 114 determines that there is no person (absence) when the non-detection time measured by the non-detection time measurement unit 113 reaches the duration.

The presence / absence determination unit 114 determines the presence / absence of a person using different durations for the state Sp2 and the state SL1 and for the state Sp2 and the state SL2. .

Specifically, the duration time in the state Sp2 and the state SL1 (hereinafter referred to as the duration time for light) is the duration time in the state Sp2 and the state SL2 (hereinafter referred to as the duration time SL). Shorter than the dark duration). For example, the duration for light time is “15 minutes”, and the duration for dark time is “1 hour”.

That is, when the state is Sp2 and the state is SL1, the presence / absence determination unit 114 performs the following determination. The presence / absence determination unit 114 determines that the state Sp2 has shifted to the state Sp1 when the non-detection time has exceeded “15 minutes (duration for light hours)”. Further, the presence / absence determination unit 114 determines that the non-detection time is “the state Sp2 is maintained if it is less than 15 minutes”.

Further, when the state is Sp2 and the state is SL2, the presence / absence determination unit 114 performs the following determination. The presence / absence determination unit 114 determines that the state Sp2 has shifted to the state Sp1 when the non-detection time has exceeded “1 hour (duration for dark time)”. Further, the presence / absence determination unit 114 determines that the state Sp2 remains unchanged if it is less than one hour.

Furthermore, the presence / absence determination unit 114 determines that there is a person (present) when the output value acquisition unit 111 detects the person detection “present”. If the presence / absence determination unit 114 is in the state Sp1, whether the state SL1 or the state SL2, when the output value acquisition unit 111 detects the presence of human detection “present”, the state Sp1 immediately changes from the state Sp1 to the state Sp2. It is determined that it has moved to.

(Summary of transition to each state of “not present / less moving / much moving”)
As shown in FIG. 4, the air cleaner 100 determines “whether it is the state Sp1, the state Sp2, or the state Sp3” depending on “whether it is determined as the state SL1 or the state SL2”. The conditions used for determination are different. In addition, the air cleaner 100 determines that the state has changed from “state Sp1 to state Sp2”, “from state Sp2 to state Sp1”, “from state Sp2 to state Sp3”, and “from state Sp3 to state Sp2”. The conditions used for this are also different. The migration conditions are summarized below.

When it is determined that the inside of the air cleaning target room R is in the bright state SL1, and it has been determined that the state is "State Sp1" until recently (A), if the condition of "person detection" is satisfied, the air cleaning The machine 100 determines that “the state has changed to the state Sp2”.

When it is determined that the state is SL1, and it is determined that the state is "State Sp2" until recently (B), if the condition that the human detection "no" continues for the duration of light is satisfied, the air cleanliness The machine 100 determines that “the state has changed to the state Sp1”. Here, in the example of FIG. 4, the duration time for light is 15 minutes.

Consider the case (B) in which it is determined that the state is SL1 and it is determined that the state is "State Sp2" until recently. In this case, when the condition that the total time Ts of human detection “present” within the latest first light-time determination time is equal to or longer than the first light-time threshold time is satisfied, the air cleaner 100 determines “to state Sp3. It was determined that there was a change in state. Here, in the example of FIG. 4, the first light time determination time is 1 minute, and the first light time threshold time is 25 seconds.

Consider the case (C) in which it is determined that the state is SL1 and “state Sp3” is determined until recently. In this case, when the condition that the total time Ts of the human detection “present” within the latest second light-time determination time is less than the second light-time threshold time is satisfied, the air cleaner 100 determines that “to state Sp2”. It was determined that there was a change in state. Here, in the example of FIG. 4, the determination time for the second light time is 5 minutes, and the threshold time for the second light time is 30 seconds.

When it is determined that the inside of the air cleaning target room R is in the dark state SL2, and it has been determined that it is in the “state Sp1” until recently (D), if the condition “human detection” is satisfied, The machine 100 determines that “the state has changed to the state Sp2”.

When it is determined that the state is SL2 and it is determined that the state is "State Sp2" until recently (E), when the condition that the human detection "no" continues for the dark time is satisfied, the air cleanliness The machine 100 determines that “the state has changed to the state Sp1”. Here, in the example of FIG. 4, the duration time for darkness is 1 hour.

Consider the case (E) in which it is determined that the state is SL2 and it is determined that the state is in the state Sp2 until recently. In this case, when the condition that the total time Ts of human detection “present” within the latest first dark determination time is equal to or greater than the first dark threshold time is satisfied, the air cleaner 100 determines that “to state Sp3”. It was determined that there was a change in state. Here, in the example of FIG. 4, the first dark time determination time is 5 minutes, and the first dark time threshold time is 30 seconds.

Consider the case (F) where it is determined that the state is SL2 and it has been determined that the state is SL3 until recently. In this case, when the condition that the total time Ts of the human detection “present” within the latest second dark determination time is less than the second dark threshold time is satisfied, the air cleaner 100 determines that “to state Sp2”. It was determined that there was a change in state. Here, in the example of FIG. 4, the second dark time determination time is 5 minutes, and the second dark time threshold time is 30 seconds.

The first light time determination time is shorter than the first dark time determination time. For example, the first light time determination time is “1 minute”, while the first dark time determination time is “1 minute”. 5 minutes ". Therefore, when the air purifier 100 determines that the state is the state SL1, when the human movement increases (that is, when the state changes from the state Sp2 to the state Sp3), the air cleaner 100 is quicker than in the state SL2. The air can be purified.

In addition, once the state changes to the state Sp3, the air cleaner 100 stops the determination of the state of the air cleaner 100 for the latest five minutes so as not to immediately return to the state Sp2. In the state SL2, once the state is changed to the state Sp2, the air cleaner 100 stops the determination of the state of the air cleaner 100 for the latest 5 minutes so as not to immediately return to the state Sp1 or the state Sp3. .

(About judgment of “room is bright / dark”)
The second determination unit 12 refers to the second determination table 130, and based on the detection signal from the illuminance sensor 32, at least the state SL1 in the air cleaning target chamber R is bright and the state SL2 in the air cleaning target chamber R is dark. It is determined which one.

Specifically, the second determination unit 12 compares the illuminance in the air cleaning target room R detected by the illuminance sensor 32 with a predetermined illuminance. If the illuminance in the air purification target room R detected by the illuminance sensor 32 is equal to or greater than a predetermined illuminance, the second determination unit 12 determines that the air purification target room R is in a bright state SL1. If the illuminance in the air purification target room R detected by the illuminance sensor 32 is less than the predetermined illuminance, the second determination unit 12 determines that the air purification target room R is in the dark state SL2.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIG. 3, FIG. 5, and FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 5 is a functional block diagram showing a schematic configuration of an air purifier 100A according to Embodiment 2 of the present invention. FIG. 6 is a diagram illustrating operation control in each state in the air cleaning target chamber R of the air purifier 100A. The air cleaner 100A is different from the air cleaner 100 in that the controller 10A is provided instead of the controller 10 and the humidifier 5 and the humidity sensor 35 are provided. Is the same.

The humidifier 5 is arrange | positioned between the fan 2 and the air purifying filter 7, as shown in FIG. As the humidifier 5, for example, a rotary drive type humidifying filter can be used. In that case, the humidification filter is rotatably supported by the tray filled with water. When the humidifying filter is rotationally driven by a motor that is a driving means of the humidifying filter, a part of the humidifying filter is immersed in the water in the tray, and the humidifying filter contains water. For this reason, the indoor air taken into the main body 1 from the suction port 6 by the fan 2 is passed through the humidifying filter, whereby water can be vaporized from the humidifying filter, and moisture can be contained in the taken indoor air. Moisture-containing air is supplied into the room through the air outlet 20, and the air in the air cleaning target room R is humidified. When the humidifier 5 reaches the target humidity, the operation is stopped.

The humidity sensor 35 detects the humidity in the air cleaning target room R. The humidity sensor 35 is disposed, for example, on the front surface of the main body 1.

As shown in FIG. 5, the control unit 10A is different from the control unit 10 in that an operation control unit 13A is provided instead of the operation control unit 13, and the other configurations are the same.

The operation control unit 13A uses the determination results of the first determination unit 11 and the second determination unit 12, and the detection result of the humidity sensor 35, in addition to the control of the operation state of the first embodiment, as shown below. Control the operation of the clean function.

Specifically, as shown in FIG. 6, when the first determination unit 11 determines that the operation control unit 13A is in the state Sp3, the operation control unit 13A performs the following controls (1) to (3). (1) The sensor sensitivity level of at least one of the dust sensor 33 and the odor sensor 34 is set to “high”, (2) the humidifier 5 is turned on, and (3) the air flow rate of the fan 2 is increased.

When the first determination unit 11 determines that the operation control unit 13 A is in the state Sp 2, the operation control unit 13 A performs control to turn on the humidifier 5 and increase the air flow rate of the fan 2. The dust sensor 33 and the odor sensor 34 continue to control the set contents.

When the first determination unit 11 determines that the operation control unit 13 A is in the state Sp 1, the operation control unit 13 A performs (1) turning off the humidifier 5 and (2) increasing the air flow rate. The dust sensor 33 and the odor sensor 34 continue to control the set contents.

Consider a case where the humidity sensor 35 detects that the humidity of the air cleaning target room R has reached the target humidity and the operation control unit 13A stops the humidifier 5. In this case, the operation control unit 13A controls the air volume of the fan 2 in five steps (strongest, strong, medium, weak, and fine) if it is in the state SL1, and in four steps ( (High, medium, weak, fine).

Consider a case where the humidity sensor 35 detects that the humidity of the air cleaning target room R is less than 10% to the target humidity. In this case, the operation control unit 13A controls the air volume of the fan 2 in four stages (strongest, strong, medium, weak) if it is in the state SL1, and if it is in the state SL2, it controls the air volume of the fan 2 in three stages (strong, Medium, weak).

Consider a case where the humidity sensor 35 detects that the humidity of the air cleaning target room R is 10% or more to the target humidity. In this case, the operation control unit 13A controls the air volume of the fan 2 in one step (strongest) in the state SL1, and controls the air volume of the fan 2 in one step (strong) in the state SL2.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the above embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 7 is a functional block diagram showing a schematic configuration of an air purifier 100B according to Embodiment 3 of the present invention. FIG. 8 is a front view showing an outline of the air purifier 100B. The air cleaner 100B is different from the air cleaner 100 in that the control unit 10B is provided instead of the control unit 10 and the pedestal unit 50 is different from the external appearance. Is the same.

The B configuration of the air cleaner 100 will be described with reference to FIGS. The air cleaner 100B shown in FIGS. 7 and 8 includes a main body 1B, a fan 2, a display unit 4, a suction port 6B, an air cleaning filter 7, a control unit 10B, an outlet 20B, a human sensor 31B, an illuminance sensor 32, and dust. The configuration includes the sensor 33, the odor sensor 34, and the pedestal portion 50. In addition, in order to ensure the simplicity of description, the structure which is not directly related to this embodiment is abbreviate | omitted from description and a figure. However, in accordance with the actual situation of implementation, the air cleaner 100B may include the omitted configuration.

The suction port 6B is located at the lower part of the side surface of the main body and sucks air into the inside. An air purifying filter 7 is provided on the main body 1B side of the suction port 6B to remove dust from the sucked air.

The air outlet 21B is disposed in front of the main body 1B and blows out purified air. The blower outlet 21B is provided with a louver 22B that changes the direction of the wind.

The human sensor 31B detects the movement of a person in the air cleaning target room R. The human sensor 31B is a pyroelectric sensor. The human sensor 31B is controlled to be turned on / off (driving and stopping driving) by the human sensor control unit 16 described later.

The pedestal unit 50 rotates the main body 1B, which is a part of the air purifier 100B (part of the air purifier 100B) provided with the human sensor 31B, around a rotation axis extending in the vertical direction.

Specifically, the pedestal portion 50 is provided with a main body 1B on an upper surface thereof having a circular shape in plan view, and the pedestal portion 50 supports the main body 1B. The pedestal portion 50 is provided with a displacement motor (not shown). The pedestal portion 50 is driven by the displacement motor so that the main body 1B is centered on a rotation axis provided in the radial center of the pedestal portion 50 and extending in the vertical direction. Can be rotated relative to the pedestal 50. The drive of the base part 50 is controlled by the rotation control part 15 mentioned later.

(Control part)
The control unit 10B is different from the control unit 10 in that an operation control unit 13B is provided instead of the operation control unit 13 and that a rotation control unit 15 and a human sensor control unit 16 are further provided. Other configurations are the same.

The rotation control unit 15 controls the drive of the pedestal unit 50. The rotation control unit 15 sets the drive of the pedestal unit 50 as an intermittent operation. Specifically, the rotation control unit 15 drives the pedestal unit 50 so as to stop for a predetermined time each time the main body 1B rotates by a predetermined angle and perform reciprocal displacement (swinging motion).

Further, the rotation control unit 15 determines the rotation angle of the main body 1B when the pedestal unit 50 is driven according to the detection range of the human sensor 31B. The relationship between the rotation angle of the main body 1B and the detection range of the human sensor 31B will be described in detail later.

The human sensor control unit 16 controls the on / off of the human sensor 31B. Specifically, the human sensor control unit 16 turns off the human sensor 31B (stops driving) when the pedestal unit 50 is driving, and the human sensor 31B when driving of the pedestal unit 50 stops. Is turned on (driven).

Here, since the human sensor 31B determines the presence / absence of human detection based on the presence or absence of movement of the heat source, when the main body 1B itself equipped with the human sensor 31B swings, the heat source itself Is erroneously determined to have a human detection even though it is not moving. However, in the present embodiment, when the main body 1B including the human sensor 31B rotates, the human sensor 31B is turned off, so that the human sensor 31B is not moved even though the heat source itself is not moving. It is possible to avoid misjudging that human detection is “present”.

(Body rotation angle and human sensor detection range)
The relationship between the rotation angle of the main body 1B and the detection range of the human sensor 31B will be specifically described with reference to FIGS. 9A and 9B. FIGS. 9A and 9B are diagrams showing the relationship between the rotation angle of the main body 1B and the detection range of the human sensor 31B.

First, as shown in FIG. 9A, when the main body 1B is stopped so that the surface on which the human sensor 31B is installed peels the left side of the paper (the drive of the pedestal 50 is stopped). Will be described. Since the main body 1B is stopped, the human sensor 31B is turned on. The detection range of the human sensor 31B at this time is an area E1 from the start line S1 to the end line S2. A line overlapping the start line S1 at this time is a line L1, and a line overlapping the end line S2 is a line L2.

Next, when the main body 1B starts to rotate in the direction of the arrow, the human sensor 31B is turned off. Thereafter, as shown in FIG. 9B, the main body 1B rotates by an angle θ1 to a position where the start line S1 and the end line S2 overlap the line L2, and stops. At this time, if the start line S1 rotates to a position exceeding the line L2, a range in which no person is detected is generated in the range from the line L2 to the start line S1. Therefore, it is desirable to determine the angle θ1 so that the start line S1 is within the range of the area E1. Thereby, there is no leak in the range in which a person is detected.

In addition, since the human sensor 31B detects a person at each place where the main body 1B is rotated and stopped, the human sensor 31B has a wider range of people compared to the case where the human sensor is fixed. Can be detected.

In the third embodiment, the air purifying filter 7B, the illuminance sensor 32, the dust sensor 33, and the odor sensor 34 are not provided, but may function as a blower provided with the human sensor 31B.

[Example of software implementation]
Control block (first determination unit 11, second determination unit 12,

operation control unit

13, 13A, 13B, rotation control unit 15, human sensor control unit 16, output value acquisition of air purifier (100 / 100A / 100B) The unit 111, the motion degree determination unit 112, the non-detection time measurement unit 113, and the presence / absence determination unit 114) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like. It may be realized by software using a CPU (Central Processing Unit).

In the latter case, the air purifier (100 / 100A / 100B) has a CPU for executing instructions of a program which is software for realizing each function, and the program and various data are recorded so as to be readable by a computer (or CPU). A ROM (Read Only Memory) or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like are provided. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. Note that one embodiment of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

[Summary]
The air cleaner (100 / 100A / 100B) according to the first aspect of the present invention includes a human sensor (31 / 31B) for detecting a human motion and an illuminance sensor (32) for detecting indoor brightness. A state in which there are no people in the air cleaning target room (R1), and there are few persons in the air cleaning target room, based on the detection signal from the human sensor. (Sp2) and a first determination unit (11) that determines whether there is a person in the air-cleaning target room and a lot of movement (Sp3), and at least air from the detection signal from the illuminance sensor A second determination unit (12) that determines whether the clean target room is in a bright state (S1) or a dark state (S2) in the air clean target room, the first determination unit, and the second determination unit Using the judgment result It includes operation control unit for controlling the operation of the air cleaning function and (13 · 13A · 13B), the.

According to the above configuration, the air cleaner has at least the following: “There are no people in the air-cleaning target room, there are few people in the air-cleaning target room, and there are few operations, and there are many people in the air-cleaning target room” The execution of the air cleaning function is controlled by combining the three states and at least two states of “the air cleaning target room is bright and the air cleaning target room is dark”.

Therefore, the air purifier is capable of executing an air purifying function not only for the presence / absence of a person in the air-cleaning target room, but also for determining whether the person in the room has a lot of movement / less movement. Play.

The air cleaner (100) according to aspect 2 of the present invention further includes at least one of a dust sensor (33) that detects dust and an odor sensor (34) that detects odor in the aspect 1, and includes the first determination unit. If it is determined by (11) that there is a person in the air cleaning target room (R) and there is a lot of movement, the operation control unit (13) It is preferable to increase the sensitivity level for detecting odor and to increase the amount of air blown from the aircraft.

According to the above configuration, when it is determined that there is a lot of people in the air-cleaning target room, the sensitivity level of the dust sensor and odor sensor for detecting dust and odor is increased. Therefore, dust and odor can be removed only by detecting the generation of a small amount of dust and odor than in the case of normal operation. As a result, dust and odor can be suppressed even in a state where people actively move, dust is likely to dance, and odor is likely to occur.

Also, if it is determined that there are many people in the air-cleaning target room and there is a lot of movement, the amount of air blown from the aircraft is increased. Therefore, even when a person is actively moving, a lot of dust is dancing, and an odor is generated, the air can be quickly cleaned.

The air cleaner (100) according to aspect 3 of the present invention further includes a display unit (4) that displays the operating state of the self-machine in the above-described aspect 1 or 2, and the first determination unit (11) When it is determined that there is no person in the clean target room, the operation control unit (13) preferably suppresses or turns off the brightness of the display unit.

According to the above configuration, the brightness of the display unit can be suppressed or turned off when there is no person informing the operation state of the own device around the air cleaner. Thereby, power consumption can be suppressed.

In the air cleaner (100) according to aspect 4 of the present invention, in any one of the aspects 1 to 3, the second determination unit (12) determines that the inside of the air purification target chamber (R) is in a dark state. Then, it is preferable that the said operation control part (13) reduces the ventilation volume of the air discharge | released from an own machine.

According to the above configuration, when the person is quiet, the air cleaner can be operated quietly. Therefore, it is possible to operate the air cleaner that does not interfere with human behavior.

In the air cleaner (100) according to the fifth aspect of the present invention, in any one of the first to fourth aspects, the non-detection period in which the human sensor (31) does not continuously detect a person continues for a duration or longer. The first determination unit (11) determines that there is no person in the air cleaning target room (R), and the duration when the air cleaning target room is bright is dark in the air cleaning target room. It is preferable that it is shorter than the said duration.

According to the above configuration, the duration when it is determined that the air-cleaning target room is dark is longer than the duration when it is determined that the air-cleaning target room is bright. Therefore, even when the air-cleaning target room is dark and a person is sleeping or not moving actively, it is possible to eliminate erroneous determination that there is no person.

The air cleaner (100) according to aspect 6 of the present invention is the air cleaner (100) according to any one of the aspects 1 to 5, in a state where no person is present in the air purification target room (R) by the first determination unit (11). When it is determined that there is an air purification target room in the dark state by the second determination unit (12), the operation control unit (13) sends the amount of air blown from its own device. It is preferable to perform control to increase.

According to the above configuration, the air can be quickly cleaned by increasing the amount of air blown from the aircraft in a state where noise is not a concern.

The air cleaner (100A) according to aspect 7 of the present invention further includes a humidifier (5) that humidifies the inside of the air purification target chamber (R) in any one of the above aspects 1 to 6, wherein the first determination unit If it is determined by (11) that there is no person in the air-cleaning target room, the operation control unit (13A) stops the operation of the humidifier, and the air discharged from the own device It is preferable to perform control to increase the air flow rate.

According to the above configuration, since the humidifier can not be operated when no one is present, power consumption can be suppressed. Moreover, since it is not necessary to worry about noise when there is no person, the air can be quickly cleaned by increasing the amount of air blown.

The air cleaner (100B) according to the eighth aspect of the present invention is the rotation of the air cleaner according to any one of the first to seventh aspects, wherein the part of the air cleaner in which the human sensor (31B) is provided extends in the vertical direction. A pedestal portion (50) that rotates about an axis, a rotation control portion (15) that controls driving of the pedestal portion, and a human sensor control unit (16) that controls driving of the human sensor. The rotation control unit intermittently drives the pedestal unit, the human sensor control unit stops driving the human sensor when the pedestal unit is driven, and the pedestal unit stops. It is preferable to drive the human sensor when it is in operation.

According to the above configuration, when the part of the air purifier including the human sensor is rotating, the human sensor is stopped driving, so that the human sensor is not moving even though the heat source itself is not moving. Can avoid misjudging that human detection is “present”. In addition, since the human sensor performs human detection at each place where the air purifier part rotates and stops, it is more comprehensive than the case where human detection is performed with the human sensor fixed. Human detection can be performed.

The air cleaner (100B) according to aspect 9 of the present invention is the air cleaner (100B) according to aspect 8, wherein the rotation control unit determines a rotation angle of the part of the air cleaner when the pedestal part is driven. It is preferable to determine according to the detection range.

According to the above configuration, the rotation of the part of the air purifier when the pedestal is driven is determined according to the detection range of the human sensor, so that the driving of the human sensor is stopped when the pedestal is driven. The human sensor detection invalid range can be covered.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

DESCRIPTION OF SYMBOLS 4 Display part 5 Humidifier 11 1st determination part 12 2nd determination part 13 * 13A * 13B Operation control part 15 Rotation control part 16 Human sensor control part 31 * 31B Human sensor 32 Illuminance sensor 33 Dust sensor 34 Odor sensor 50 Base 100 / 100A / 100B Air Cleaner

Claims

An air purifier equipped with a human sensor that detects human movement and an illuminance sensor that detects indoor brightness,
Based on the detection signal from the human sensor, at least a state where there is no person in the air-cleaning target room, a state where there is a person in the air-cleaning target room and a small amount of operation, and a person is present in the air-cleaning target room and there are many actions A first determination unit for determining which of the states;
A second determination unit that determines, from the detection signal by the illuminance sensor, at least whether the air-cleaning target room is in a bright state and the air-cleaning target room is in a dark state;
An air cleaner, comprising: an operation control unit that controls the operation of the air purifying function using the determination results of the first determination unit and the second determination unit.
It further comprises at least one of a dust sensor for detecting dust and an odor sensor for detecting odor,
When it is determined by the first determination unit that there is a person in the air-cleaning target room and there is a lot of movement, the operation control unit is sensitive to detecting dust and odor of the dust sensor and the odor sensor. The air cleaner according to claim 1, wherein the level is increased and the amount of air blown from the own machine is increased.
It further includes a display unit that displays the operation status of the aircraft.
The operation control unit suppresses or turns off the brightness of the display unit when the first determination unit determines that there is no person in the air-cleaning target room. Or the air cleaner of 2.
The said operation control part reduces the ventilation volume of the air discharge | released from an own machine, when it determines with the said 2nd determination part being in the air-cleaning object room | chamber interior being a dark state, The air volume which discharge | releases from an own machine is reduced. The air cleaner according to any one of the above.
When the non-detection period in which the human sensor does not continuously detect a person continues for a duration or longer, the first determination unit determines that there is no person in the air-cleaning target room,
The air purifier according to any one of claims 1 to 4, wherein the duration when the air-cleaning target room is bright is shorter than the duration when the air-cleaning target room is dark.
When the first determination unit determines that there is no person in the air-cleaning target room, and the second determination unit determines that the air-cleaning target room is in a dark state, the operation control is performed. The air cleaner according to any one of claims 1 to 5, wherein the unit performs control to increase an air blowing amount of air discharged from the own device.
It further includes a humidifier that humidifies the air-cleaning target room,
If it is determined by the first determination unit that there is no person in the air-cleaning target room, the operation control unit stops the operation of the humidifier and sends air to be discharged from its own device. The air cleaner according to any one of claims 1 to 6, wherein control for increasing the air volume is performed.
A pedestal for rotating the part of the air cleaner provided with the human sensor around a rotation axis extending in a vertical direction;
A rotation control unit for controlling the drive of the pedestal unit;
A human sensor control unit for controlling the driving of the human sensor,
The rotation control unit intermittently drives the pedestal unit,
The human sensor control unit stops driving the human sensor when the pedestal portion is driven, and drives the human sensor when the pedestal portion is stopped. The air cleaner according to any one of 1 to 7.
The air cleaner according to claim 8, wherein the rotation control unit determines a rotation angle of the portion of the air cleaner when the pedestal unit is driven according to a detection range of the human sensor. Machine.