JP2016050438A - Faucet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit destruction of a detection part that detects removal of a primary battery.SOLUTION: A faucet device includes: a primary battery; a detection part connected to the primary battery for detecting removal of the primary battery; a power generation part capable of generating a voltage higher than an operation guaranteeing voltage of the detection part; a power storage part capable of storing a voltage higher than the operation guaranteeing voltage, with electricity supplied by the power generation part; an electronic component connected between the primary battery and the power storage part, and also to the detection part, for storing electric capacity; and a discharge part discharging the electric capacity of the electronic component when the detection part detects removal of the primary battery.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a faucet device.

  Conventionally, a faucet device with a power generation function provided with a generator for generating part or all of operating power is known (see, for example, Patent Documents 1 and 2). In this faucet device with a power generation function, the capacitor is temporarily charged with the power of the primary battery or the generator.

JP 2001-207498 A JP 2003-70297 A

  Although not described in Patent Documents 1 and 2, some faucet devices with a power generation function are provided with a detection unit (for example, a battery voltage measurement circuit) that detects that a battery has been removed. In addition to this, the faucet device with a power generation function has a possibility that the user may touch the periphery of the battery.Therefore, a varistor as a countermeasure against static electricity, a capacitor as a countermeasure to stabilize voltage fluctuation, etc. It is also conceivable to provide an electronic component connected in between and connected to the detection unit.

  However, in such a faucet device with a power generation function, when the detection unit detects that the primary battery has been removed, the power generation unit generates a voltage higher than the operation guarantee voltage of the detection unit, and the capacitor Is charged with a voltage higher than the operation-guaranteed voltage of the detection unit by feeding from the power generation unit, the voltage of the capacitor is not absorbed by the primary battery because the primary battery is removed. As a result, an electric capacity having a voltage higher than the operation guarantee voltage of the detection unit can be generated in the electronic component connected to the capacitor. If an electric capacitance with a voltage exceeding the operation guarantee voltage of the detection part is generated in the electronic component, a voltage higher than the operation guarantee voltage is applied to the detection part connected to the electronic component, and the detection part is destroyed. It will be.

  Therefore, the present invention has been made to solve the above-described problem, and an object of the present invention is to provide a water faucet device that can suppress the destruction of the detection unit that detects that the primary battery has been removed. .

  The faucet device according to the first aspect of the present invention includes a primary battery, a detection unit that is connected to the primary battery and detects that the primary battery has been removed, and a voltage higher than an operation guarantee voltage of the detection unit. A power generation unit capable of generating power, a power storage unit connected to the primary battery and the power generation unit, and capable of charging a voltage higher than the operation guarantee voltage by feeding from the power generation unit, and between the primary battery and the power storage unit And an electronic component that is connected to the detection unit and accumulates electric capacity, and a discharge unit that discharges the electric capacity of the electronic component when detecting that the primary battery is removed in the detection unit; .

According to this configuration, when the detection unit does not detect that the primary battery has been removed, the power generation unit generates a voltage higher than the operation guarantee voltage of the detection unit, and the power storage unit receives power from the power generation unit. Even if the voltage higher than the operation guarantee voltage of the detection unit is charged by power supply, the voltage of the power storage unit can be absorbed by the primary battery, so the operation of the detection unit is connected to the electronic component connected between the primary battery and the power storage unit. Electric capacity having a voltage higher than the guaranteed voltage is unlikely to occur. In this case, for example, the voltage of the electronic component is the same as the voltage of the battery. On the other hand, when the detection unit detects that the primary battery has been removed, the power generation unit generates a voltage higher than the operation guarantee voltage of the detection unit, and the power storage unit receives power from the power generation unit. When a voltage higher than the operation guarantee voltage is charged, the voltage of the power storage unit is not absorbed by the primary battery because the primary battery is removed.
As a result, if there is no discharge part, an electric capacity having a voltage higher than the operation guarantee voltage of the detection part may be generated in the electronic component connected to the power storage part. If an electric capacitance with a voltage exceeding the operation guarantee voltage of the detection part is generated in the electronic component, a voltage higher than the operation guarantee voltage is applied to the detection part connected to the electronic component, and the detection part is destroyed. Will be.
Therefore, according to the above configuration, when the discharge unit detects that the primary battery has been removed in the detection unit, the electric capacity of the electronic component is discharged, so the power generation unit generates a voltage higher than the operation guarantee voltage of the detection unit. Even if the power storage unit is charged with a voltage higher than the operation guarantee voltage of the detection unit by feeding from the power generation unit, the electric capacity of the electronic component is higher than the operation guarantee voltage of the detection unit. This can be suppressed. As a result, the voltage applied to the detection unit by being connected to the electronic component can be suppressed from becoming higher than the operation guarantee voltage, and therefore the detection unit can be prevented from being destroyed.

  In the faucet device according to the second aspect of the present invention, in the first aspect, the faucet device includes a measurement unit that measures at least one of the parameter related to the amount of power stored in the power storage unit and the parameter related to the electric capacity of the electronic component. The discharge unit operates with the power of the power storage unit, detects that the primary battery has been removed in the detection unit, and when the measurement result by the measurement unit exceeds a predetermined value, The electric capacity of the electronic component is discharged.

  According to this configuration, when the discharge unit detects that the primary battery has been removed in the detection unit, and the measurement result by the measurement unit exceeds a predetermined value, the electric capacity of the electronic component is discharged. Therefore, it is not necessary to discharge in other cases. As a result, for example, even when the detection unit detects that the primary battery has been removed, the discharge unit can be prevented from discharging when the measurement result by the measurement unit is equal to or less than a predetermined value. In this way, when the detection unit detects that the primary battery has been removed, compared with the case where the discharge unit continues to discharge, it suppresses the power of the power storage unit consumed by the discharge operation. be able to. In addition, in this way, compared with the case where the discharge unit continues to discharge when the measurement result by the measurement unit is equal to or less than a predetermined value, the storage unit consumed by the discharge operation of the discharge unit Electric power can be suppressed.

  In the faucet device according to a third aspect of the present invention, in the second aspect, the measurement unit measures the voltage of the power storage unit as the parameter, and the discharge unit has the primary battery removed from the detection unit. And when the measurement result by the measurement unit exceeds the operation guaranteed voltage as the predetermined value, the electric capacity of the electronic component is discharged.

  According to this configuration, the discharge unit detects that the primary battery has been removed in the detection unit, and discharges the electric capacity of the electronic component when the measurement result by the measurement unit exceeds the guaranteed operating voltage. In other cases, it is not necessary to discharge. As a result, for example, even when the detection unit detects that the primary battery has been removed, the discharge unit can be prevented from discharging when the measurement result by the measurement unit is equal to or lower than the operation guarantee voltage. In this way, compared with the case where the discharge continues even when the voltage of the power storage unit is equal to or lower than the operation guarantee voltage, the power of the power storage unit consumed by the discharge operation of the discharge unit can be suppressed.

  In the faucet device according to a fourth aspect of the present invention, in the second aspect or the third aspect, the discharge unit discharges when a predetermined time elapses after starting the discharge of the electric capacity of the electronic component. Exit.

  According to this configuration, when a predetermined time has elapsed after the discharge unit starts discharging the electric capacity of the electronic component, the discharge ends, and thus the power consumed by the discharge unit continuing to discharge is suppressed. can do.

  In the faucet device according to a fifth aspect of the present invention, in any one of the second aspect to the fourth aspect, the detection unit includes a control device that operates with electric power of the power storage unit, the control device, and the control device. A detection circuit connected to a primary battery, wherein detection is performed based on an input from the detection circuit by the control device, and the discharge unit is connected to the control device, the control device, and the electronic component The discharge circuit is discharged by control of the discharge circuit by the control device, and the measurement unit includes the control device and a measurement circuit connected to the control device and the power storage unit. Measurement is performed based on an input from the measurement circuit by the control device, and a backflow of current from the power storage unit to the electronic component is suppressed between the electronic component, the primary battery, and the power storage unit. You Backflow suppression circuit is connected.

  According to this configuration, each function of the detection unit, the discharge unit, and the measurement unit can be realized by a single control device. Therefore, compared with the case where a control device is provided for each detection unit, discharge unit, and measurement unit, The manufacturing cost of the stopper device can be reduced. Moreover, since the backflow suppression circuit which suppresses the backflow from an electrical storage part to a primary battery is connected between an electronic component, a primary battery, and the said electrical storage part, it is higher in the electronic component in the primary battery side than a backflow suppression circuit Sudden generation of electric capacity can be suppressed.

  In the faucet device according to a sixth aspect of the present invention, in the fifth aspect, the discharge circuit is provided also as the measurement circuit connected between the power storage unit and the backflow suppression circuit.

  According to this configuration, since the discharge circuit is provided also as the measurement circuit, it is not necessary to provide a separate circuit for the discharge circuit, and the discharge circuit is located between the power storage unit and the backflow suppression circuit. By doing so, since it is not directly connected to the primary battery, even if static electricity is generated in the vicinity of the primary battery, it is possible to suppress the static electricity from being transmitted to the discharge circuit ahead by a backflow suppression circuit or the like.

  In the faucet device according to a seventh aspect of the present invention, in the fifth aspect, between the primary battery and the backflow suppression circuit, power supply control for on / off control of power supply from the primary battery to the power storage unit A circuit is provided, and the discharge circuit is also used as the power supply control circuit.

  According to this configuration, since the discharge circuit is provided also as the power supply control circuit, it is not necessary to provide a separate circuit for the discharge circuit, and the discharge circuit is provided between the primary battery and the backflow suppression circuit. By being positioned, it is possible to suppress discharging to the power storage unit ahead of the backflow suppression circuit by the discharge circuit. As a result, even after the primary battery is removed, the control device can continue the operation for a long time and can shorten the discharge time.

  In the faucet device according to an eighth aspect of the present invention, in the fifth aspect, the discharge circuit is provided also as the detection circuit.

  According to this configuration, since the discharge circuit is also used as the detection circuit, it is not necessary to provide a separate circuit for the discharge circuit, and the discharge circuit is located between the primary battery and the backflow suppression circuit. By doing so, it is possible to suppress discharging to the power storage unit ahead of the backflow suppression circuit by the discharge circuit. As a result, even after the primary battery is removed, the control device can continue the operation for a long time and can shorten the discharge time.

  According to the faucet device of the present invention, it is possible to suppress the destruction of the detection unit that detects that the primary battery has been removed.

It is the figure which showed the outline of the faucet device concerning a 1st embodiment of the present invention in section. It is a figure shown with the figure which shows the structure of the power supply circuit with which the faucet apparatus which concerns on 1st Embodiment of this invention is provided. It is a flowchart which shows an example of control of the faucet device including control of a power supply circuit. It is a flowchart which shows an example of the subroutine in FIG. It is a figure which shows the structure of the power supply circuit with which the faucet apparatus which concerns on 2nd Embodiment of this invention is provided. It is a figure which shows an example of the circuit structure of the power supply circuit which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example which concerns on 2nd Embodiment of the subroutine in FIG. It is a figure showing an example of circuit composition of a power circuit with which a faucet device concerning a 3rd embodiment of the present invention is provided. It is a figure which shows an example of the circuit structure of the power supply circuit with which the faucet apparatus which concerns on 4th Embodiment of this invention is provided. It is a figure which shows an example of the circuit structure of the power supply circuit with which the faucet apparatus which concerns on 5th Embodiment of this invention is provided. It is a flowchart which shows an example which concerns on 6th Embodiment of the subroutine in FIG.

Hereinafter, a plurality of embodiments will be described according to the following order of the present invention with reference to the accompanying drawings. In order to facilitate understanding, the same components are denoted by the same reference numerals as much as possible in the drawings, and redundant description is omitted.
(1) First embodiment:
(2) Second embodiment:
(3) Third embodiment:
(4) Fourth embodiment:
(5) Fifth embodiment:
(6) Sixth embodiment:
(7) Modification:

(1) First Embodiment [Overall Configuration]
FIG. 1 is a sectional view schematically showing a faucet device 100 according to the first embodiment of the present invention.

  The faucet device 100 detects, for example, an object (such as a human body or an object) and automatically discharges water, and discharges water to the basin 1 provided in the washstand.

  As shown in FIG. 1, the basin 1 is provided on the upper surface of the basin counter 2. A faucet 3 constituting a spout for discharging water to the ball surface 1 a of the basin 1 is provided on the basin counter 2. The faucet 3 has a water discharge port 3 a that discharges water, and is provided so that water discharged from the water discharge port 3 a is discharged into the ball surface 1 a of the basin 1.

  The water discharged from the water faucet 3 a by the faucet 3 is supplied by the water supply channel 4. The water supply channel 4 guides water supplied from a water supply source such as a water pipe to the water outlet 3a. A drainage channel 5 is connected to the basin 1. The drainage channel 5 discharges water discharged from the water outlet 3a into the ball surface 1a of the basin 1.

  The faucet device 100 includes an electromagnetic valve 6, a sensor unit 8, and a controller unit 9. The sensor unit 8 and the controller unit 9 are separated, the sensor unit 8 is accommodated in the faucet 3, and the electromagnetic valve 6 and the controller unit 9 are accommodated below the washstand. The sensor unit 8 may be attached to the outside of the faucet 3.

  The sensor unit 8 and the controller unit 9 are connected by a connection cable 7. The controller unit 9 supplies a power supply voltage to the sensor unit 8 via the connection cable 7 and controls the sensor unit 8 via the connection cable 7.

  The electromagnetic valve 6 is provided in the water supply channel 4 and opens and closes the water supply channel 4. When the electromagnetic valve 6 is opened, the water supplied from the water supply path 4 is discharged from the water outlet 3a. When the electromagnetic valve 6 is closed, the water supplied from the water supply path 4 is not discharged from the water outlet 3a. It becomes a water state.

  The electromagnetic valve 6 is connected to the controller unit 9, and the controller unit 9 drives the electromagnetic valve 6 to control the opening / closing operation. The solenoid valve 6 is electrically controlled in accordance with a control signal from the controller unit 9 to open and close the water supply channel 4. Thus, the electromagnetic valve 6 functions as a water supply valve that opens and closes the water supply path 4 of water discharged from the water outlet 3a.

  The solenoid valve 6 is a self-holding solenoid valve called a so-called latching solenoid valve. The solenoid valve 6 operates from a closed state to an open state (opening operation) by energizing the solenoid coil in one direction, and then energizes the solenoid coil. Even if the power is cut off, the open state is maintained and the solenoid coil is operated from the open state to the closed state by energizing the solenoid coil in the other direction (closed operation). .

  The sensor unit 8 detects an object (such as a hand) that approaches the water outlet 3a. The water discharge destination of the water discharge port 3 a becomes a detection region of the sensor unit 8. The sensor unit 8 detects the position, movement, and the like of the object by transmitting the propagation wave and receiving the reflected wave reflected from the object such as a human body that has received the transmitted propagation wave.

  In addition, as a propagation wave used by the sensor unit 8, for example, infrared, microwave, millimeter wave, ultrasonic wave, light, or the like can be used. Radio waves may be used for propagating waves. In the case of using a microwave, a microwave Doppler sensor may be used as the sensor unit 8.

  The sensor unit 8 is provided, for example, inside the faucet 3 near the water outlet 3a, and is arranged to transmit a propagation wave toward the user side (left side in FIG. 1) of the washstand. Thereby, the sensor part 8 can detect that a human body has approached the spout 3a, that a hand has been pushed out toward the spout 3a from a human body that has approached the spout 3a, and the like.

  The sensor unit 8 is connected to the controller unit 9. The controller unit 9 receives a signal output from the sensor unit 8 and detects the position, movement, and the like of the object based on this signal. And the solenoid valve 6 is controlled based on the detection result.

  The controller unit 9 controls the opening / closing operation of the electromagnetic valve 6 based on the signal output from the sensor unit 8. For this reason, an output signal from the sensor unit 8 is input to the controller unit 9. The controller unit 9 outputs a control signal to the electromagnetic valve 6 to control the sensing operation of the sensor unit 8.

  As described above, the faucet device 100 of the present embodiment includes the electromagnetic valve 6, the sensor unit 8, and the controller unit 9, and is controlled by the controller unit 9 based on the detection signal of the sensor unit 8. The opening / closing operation of the solenoid valve 6 is controlled. Thereby, the water discharge according to the detection result (movement of the user of a washstand, etc.) of the target object which approaches the water discharge port 3a is performed.

  The sensor unit 8 is not always operating, but the controller unit 9 controls so as to operate only at a timing that requires sensing. Thereby, the power consumption of the sensor unit 8 is reduced. Hereinafter, a state in which the controller unit 9 performs control for causing the sensor unit 8 to perform a sensing operation is referred to as a non-power-saving operation state, and a state in which the controller unit 9 performs control for causing the sensor unit 8 to stop the sensing operation. Will be referred to as a power saving operation state. The controller unit 9 can increase the ratio of the power saving operation state by reducing the frequency of the sensing operation of the sensor unit 8 to such an extent that the user does not feel inconvenience, thereby reducing the power consumption of the faucet device 100. be able to.

  The controller unit 9 and the sensor unit 8 can operate with less power consumption in the power saving operation state than in the non-power saving operation state. For example, when the current consumption in the non-power-saving operation state is 10 mA, the current consumption in the power-saving operation state is 10 μA. The controller unit 9 and the sensor unit 8 can operate within the guaranteed operation voltage range in the power saving operation state.

[Power supply circuit]
FIG. 2 is a diagram illustrating a configuration of the power supply circuit 10 provided in the faucet device 100 according to the present embodiment.

The power supply circuit 10 is a circuit for generating a power supply voltage for the faucet device 100. As shown in FIG. 2, this power supply voltage is supplied to a load 12 provided in the faucet device 100 such as the controller unit 9 and the electromagnetic valve 6.
Note that the load 12 is not limited to these, and various electric / electronic components that operate by feeding can be used as the load.

  The power supply circuit 10 includes a primary battery 14, a detection unit 16, a generator 18 as a power generation unit, a power storage circuit 20 as a power storage unit, an electronic component 22, and a discharge unit 24. The power supply circuit 10 may include other elements. For example, the power supply circuit 10 includes a measurement unit that measures at least one of a parameter related to the storage amount of the power storage circuit 20 and a parameter related to the electric capacity of the electronic component 22. May be.

  The primary battery 14 charges the power storage circuit 20 when the charge amount of the power storage circuit 20 is less than the charge amount of the primary battery 14, and the power storage circuit 20 when the charge amount of the power storage circuit 20 is greater than or equal to the charge amount of the primary battery 14. The battery is not charged.

The detection unit 16 is connected to the primary battery 14 and detects that the primary battery 14 has been removed. In the first embodiment, the detection unit 16 detects whether or not the primary battery 14 has been removed by measuring the voltage of the primary battery 14. The detection control of the detection unit 16 is executed by, for example, power of the power storage circuit 20.
The detection control of the detection unit 16 may be executed by one device, for example, the controller unit 9 or may be executed by a separate device together with the control of the discharge unit 24 described later.

The generator 18 generates AC electrical energy from water flow energy as non-electric energy generated in the water flow path. For example, the generator 18 is installed in a flow path such as the water supply channel 4 or the drainage channel 5, and the rotor of the generator 18 is rotated by the water flow when supplying water to the water supply channel 4 or draining to the drainage channel 5. Thus, electric power (which can be paraphrased as voltage) is generated. In the first embodiment, the generator 18 is configured to be capable of generating a voltage higher than the operation guarantee voltage of the detection unit 16. The “operation guarantee voltage” means an upper limit voltage of a voltage at which the detection unit 16 operates without being broken.
Non-electric energy is not limited to water energy, and various energy such as light energy and heat energy can be adopted, and the energy converter from non-electric energy to electric energy is also limited to a generator having a rotor. First, it is appropriately selected according to the mode of non-electric energy.

  The storage circuit 20 is connected to the primary battery 14 and the generator 18, and is supplied with electric power from these and charges it. In the first embodiment, the power storage circuit 20 can be charged with a voltage higher than the operation-guaranteed voltage of the detection unit 16 by feeding from the generator 18.

  The storage circuit 20 is further connected to the load 12, and the electrical energy generated by the generator 18 and once stored in the storage circuit 20 is supplied to the load 12.

  The electronic component 22 is connected to a connection wiring 26 between the primary battery 14 and the storage circuit 20 and accumulates electric capacity at least during power generation. The electronic component 22 is also connected to the detection unit 16. As the electronic component 22, there is a possibility that a user may touch the vicinity of the primary battery 14, and thus an electronic component that may have a capacitance component such as a varistor as a countermeasure against static electricity or a capacitor as a countermeasure to stabilize voltage fluctuation is given. It is done.

  The discharge unit 24 is connected to the electronic component 22 via the connection wiring 26. When the detection unit 16 detects that the primary battery 14 has been removed, the discharge unit 24 discharges the electric capacity when the electronic component 22 stores electric power (including a case where electric power is stored in the future).

[control]
FIG. 3 is a flowchart illustrating an example of control of the faucet device 100 including control of the power supply circuit 10. FIG. 4 is a flowchart showing an example of the subroutine in FIG. The process shown in FIG. 3 is executed regularly or irregularly, for example.

(Step SP10)
The controller unit 9 performs operation start control of the sensor unit 8. The sensor unit 8 performs an object detection operation according to the control of the controller unit 9. When detecting the object, the sensor unit 8 outputs, for example, a High signal to the controller unit 9. When the High signal is input from the sensor unit 8, the controller unit 9 detects that there is an object, and proceeds to the process of step SP12.

(Step SP12)
The controller unit 9 starts spout water control in response to detection of the object. Thereby, for example, until the detection of the object continues, the electromagnetic valve 6 is opened, and the water in the water supply channel 4 is discharged from the water outlet 3a. The controller unit 9 executes the process of step SP14 in parallel after starting the water discharge control of at least the water discharge control.

(Step SP14)
The controller unit 9 executes a battery removal check subroutine which will be described later. After this execution, the controller unit 9 proceeds to the process of step SP16.

(Step SP16)
The controller unit 9 determines whether or not the detection unit 16 is detecting battery removal. And the controller part 9 transfers to the process of step SP18, when affirmation determination is carried out, and when the negative determination is carried out, the process shown in FIG. 3 is complete | finished.

(Step SP18)
The controller unit 9 notifies the battery removal by a method such as sound or light. Then, the controller unit 9 returns to the process of step SP14.

  Next, following FIG. 4, the flow of processing of the subroutine of step SP14 will be described.

(Step SP20)
The controller unit 9 passes the processing to the detection unit 16. The detection unit 16 measures the voltage of the primary battery 14.

(Step SP22)
The detection unit 16 determines whether or not the measured voltage of the primary battery 14 is equal to or lower than a predetermined value (for example, around 0 V including 0 V such as 0.1 V). If the determination unit 16 makes an affirmative determination, it proceeds to the processing of step SP24 assuming that the primary battery 14 has been removed. If the determination is negative, the detector 16 assumes that the primary battery 14 has not been removed, and proceeds to step SP26.

(Step SP24)
The discharge unit 24 performs discharge control for discharging at least part of the electric capacity accumulated in the electronic component 22 or accumulated in the future. Then, the discharge unit 24 passes the process to the controller unit 9, and the controller unit 9 ends the subroutine process shown in FIG.
In the first embodiment, the discharging method is not particularly limited, and discharging may be performed by a discharging circuit. Control not related to the user, such as signal transmission control, and the driving period of the sensor unit 8 are shortened to reduce power. You may discharge by making consumption high. In the first embodiment, the discharge time is not particularly limited. Furthermore, in the first embodiment, the timing of the discharge time is not particularly limited as long as it is after step SP22, immediately after that, after a certain time has elapsed, or after other predetermined conditions are satisfied.

(Step SP26)
The discharge unit 24 does not execute the discharge control. Specifically, if the discharge unit 24 is not currently in discharge control, the process directly passes to the controller unit 9, and the controller unit 9 ends the subroutine processing shown in FIG. Moreover, if the discharge part 24 is in the state which is currently performing discharge control, it will complete | finish discharge control, will pass a process to the controller part 9, and the controller part 9 will complete | finish the process of the subroutine shown in FIG.

[Action and effect]
Next, the operation and effect of the faucet device 100 according to the first embodiment of the present invention will be described.

  First, according to the configuration of the faucet device 100, when the detection unit 16 does not detect that the primary battery 14 has been removed, the generator 18 generates a voltage higher than the operation guarantee voltage of the detection unit 16. Thus, even if the power storage circuit 20 is charged with a voltage higher than the operation-guaranteed voltage of the detection unit 16 by power feeding from the generator 18, the voltage of the power storage circuit 20 can be absorbed by the primary battery 14, and thus the primary battery 14 In addition, the electronic component 22 connected between the storage circuit 20 is unlikely to generate an electric capacity having a voltage higher than the operation guarantee voltage of the detection unit 16. In this case, for example, the voltage of the electronic component 22 is the same as the voltage of the battery.

  On the other hand, when the detection unit 16 detects that the primary battery 14 has been removed, the generator 18 generates a voltage higher than the operation guarantee voltage of the detection unit 16, and the power storage circuit 20 is removed from the generator 18. When the voltage higher than the operation guarantee voltage of the detection unit 16 is charged by the power supply, the voltage of the storage circuit 20 is not absorbed by the primary battery 14 because the primary battery 14 is removed.

  As a result, if there is no discharge unit 24, an electric capacity having a voltage higher than the operation guarantee voltage of the detection unit 16 may be generated in the electronic component 22 connected to the power storage circuit 20. When an electric capacity having a voltage exceeding the operation guaranteed voltage of the detection unit 16 is generated in the electronic component 22, a voltage higher than the operation guaranteed voltage is applied to the detection unit 16 connected to the electronic component 22, The detection part 16 will be destroyed.

  Therefore, according to the first embodiment, the faucet device 100 includes the discharge unit 24, and when the discharge unit 24 detects that the primary battery 14 has been removed in the detection unit 16 (see step SP22). Since the electric capacity of the electronic component 22 is discharged (refer to step SP24), the generator 18 generates a voltage higher than the operation guarantee voltage of the detection unit 16, and the power storage circuit 20 detects the power supply from the generator 18. Even if a voltage higher than the operation guarantee voltage of the unit 16 is charged, it is possible to suppress the electric capacity of the electronic component 22 from becoming a voltage higher than the operation guarantee voltage of the detection unit 16. As a result, since the voltage applied to the detection unit 16 by being connected to the electronic component 22 can be suppressed from becoming higher than the operation guaranteed voltage, the detection unit 16 can be prevented from being destroyed. .

(2) Second Embodiment Next, a faucet device according to a second embodiment of the present invention will be described.

  The configuration of the faucet device according to the second embodiment of the present invention is the same as that of the faucet device 100 according to the first embodiment. However, the configuration of the faucet device according to the second embodiment is different from that of the faucet device 100 according to the first embodiment in the configuration of the electrical circuit of the faucet device. The function of the faucet device according to the second embodiment of the present invention is different from that of the faucet device 100 according to the first embodiment in the processing of the subroutine of step SP14 shown in FIG.

[Constitution]
FIG. 5 is a diagram illustrating a configuration of the power supply circuit 210 provided in the faucet device 200 according to the second embodiment of the present invention.

  The power supply circuit 210 includes the electromagnetic valve 6 as a load, the controller unit 9 as a control device, the primary battery 14, the generator 18, the power storage circuit 20, and the electronic component 22 described above. . In addition to these, the power supply circuit 210 includes a rectifier circuit 212, a backflow suppression circuit 214, a step-down circuit 216, a step-up circuit 218, a battery detection circuit 220 as a detection circuit, a discharge circuit 222, and an electricity storage as a measurement circuit. Voltage measurement circuit 224. In the second embodiment, the controller unit 9 also functions as the detection unit 16 and the discharge unit 24 and is in the power supply circuit 210. However, the controller unit 9 may be considered to be outside the power supply circuit 210.

  The rectifier circuit 212 is connected between the generator 18 and the power storage circuit 20. The rectifier circuit 212 rectifies the AC power generated by the generator 18 to generate a DC power.

  The backflow suppression circuit 214 is connected between the primary battery 14, the electronic component 22, and the power storage circuit 20. The backflow suppression circuit 214 allows a current flowing from the primary battery 14 to the power storage circuit 20 and suppresses a backflow of current from the power storage circuit 20 to the primary battery 14 (and the electronic component 22).

  The step-down circuit 216 steps down and outputs an input voltage that is equal to or higher than a predetermined value, and outputs the input voltage as it is for an input voltage that is lower than the predetermined value. In the second embodiment, the input voltage to the step-down circuit 216 is the charging voltage of the storage circuit 20, and the voltage output destination is the step-up circuit 218.

  The booster circuit 218 outputs an input voltage that is equal to or greater than a predetermined value as it is, and boosts and outputs an input voltage that is equal to or lower than a predetermined value to a voltage that is equal to or higher than the predetermined value and lower than a predetermined value of the step-down circuit 216.

  The battery detection circuit 220 is connected between the primary battery 14 and the backflow suppression circuit 214. The battery detection circuit 220 is also connected to the controller unit 9. The battery detection circuit 220 is a part of the detection unit 16 and is a circuit for the controller unit 9 to detect that the primary battery has been removed. In other words, the detection unit 16 includes the controller unit 9 and the battery detection circuit 220, and detection of battery removal is performed based on an input from the battery detection circuit 220 by the controller unit 9.

  The discharge circuit 222 is connected to the electronic component 22. The discharge circuit 222 is also connected to the controller unit 9. Further, in FIG. 5, the discharge circuit 222 is connected to the electronic component 22 by being connected to the connection wiring 26 between the primary battery 14 and the backflow suppression circuit 214. However, unlike FIG. 5, the discharge circuit 222 may be connected to the electronic component 22 by being connected between the backflow suppression circuit 214 and the storage circuit 20 or between the storage circuit 20 and the step-down circuit 216.

  The discharge circuit 222 is a part of the discharge unit 24 and is a circuit that discharges the electric capacity of the electronic component 22. In other words, the discharge unit 24 includes the controller unit 9 and the discharge circuit 222, and discharge is performed by control of the discharge circuit 222 by the controller unit 9.

The storage voltage measurement circuit 224 is connected to the storage circuit 20. The stored voltage measurement circuit 224 is also connected to the controller unit 9. The storage voltage measurement circuit 224 is a part of the measurement unit 28 and is a circuit for the controller unit 9 to measure the voltage of the storage circuit 20. In other words, the measurement unit 28 includes the controller unit 9 and the storage voltage measurement circuit 224, and measures the voltage of the storage circuit 20 based on the input from the storage voltage measurement circuit 224 by the controller unit 9.
Note that the measurement unit 28 measures at least one of a parameter relating to the amount of electricity stored in the electricity storage circuit 20 and a parameter relating to the electric capacity of the electronic component 22, and in the second embodiment, the parameter is the electricity storage circuit. The voltage is 20.

  FIG. 6 is a diagram illustrating an example of a circuit configuration of the power supply circuit 210.

  As shown in FIG. 6, the power supply circuit 210 includes a microcomputer 300 as the controller unit 9. The microcomputer 300 includes an input / output terminal IO1, an input terminal I1, an input terminal I2, an output terminal O1, an output terminal O2, an output terminal O3, a power supply terminal VCC, and other terminals (not shown). I have.

  The sensor unit 8 is connected to the input / output terminal IO1 of the microcomputer 300. The microcomputer 300 and the sensor unit 8 are driven by the electric power of the power storage circuit 20 when the power supply terminal VCC is connected to the power storage circuit 20.

  The generator 18 that supplies power to the power storage circuit 20 is electrically connected to the rectifier circuit 212 via the connector 301. The generator 18 outputs the generated AC power source to the rectifier circuit 212.

  The rectifier circuit 212 is configured by a diode bridge circuit that generates and outputs a DC power supply DC by full-wave rectification of the AC power supply, for example, rectification to 5V. The rectifier circuit 212 is electrically connected to the power storage circuit 20.

  The power storage circuit 20 includes an electric double layer capacitor C1. The electric double layer capacitor C1 stores (charges) the power rectified by the rectifier circuit 212. The electric double layer capacitor C1 has a low internal resistance and can be charged / discharged in a short time. Since the deterioration due to charging / discharging is small, the product life is long and the voltage changes linearly during charging / discharging. The storage circuit 20 is electrically connected to the step-down circuit 216.

  The step-down circuit 216 includes a regulator 302 and a capacitor C2. The electric power stored in the electric double layer capacitor C1 is converted into a voltage of, for example, 3.3V by the regulator 302. When the voltage stored in the electric double layer capacitor C1 is 3.3V or less, substantially the same voltage is output (if the voltage of the electric double layer capacitor C1 is 2V, the regulator 302 outputs about 2V. .) The voltage-converted voltage is stored in the capacitor C2. The step-down circuit 216 is electrically connected to the step-up circuit 218.

  The booster circuit 218 includes a DC-DC converter that boosts the input voltage by switching control. This DC-DC converter includes a coil L1, a switch circuit SW1, and a diode D1. The voltage of the capacitor C2 is boosted to about 3.3V by the booster circuit 218, for example. When the voltage of the capacitor C2 is about 3.3V, the voltage is hardly boosted. When the voltage of the capacitor C2 is about 3.3 or less (for example, 2V), the voltage is boosted to about 3.3V. The gate of the FET 219 (field effect transistor) in the switch circuit SW1 is connected to the output terminal O2 of the microcomputer 300, and the microcomputer 300 controls the switching of the booster circuit 218. The booster circuit 218 is electrically connected to the capacitor C3 and the capacitor C4.

  The voltage output from the booster circuit 218 is stored in the capacitor C3 and the capacitor C4. The capacitor C3 is electrically connected to the power supply terminal VCC of the microcomputer 300, and is used as a driving power source for the microcomputer 300 and the sensor unit 8. The capacitor C4 is electrically connected to the capacitor C3 and the drive circuit 304 of the solenoid valve 6 as the load 12, and is used as a power source for driving the solenoid valve 6.

  The drive circuit 304 is a circuit for driving the electromagnetic valve 6 and includes, for example, four FETs 306, 308, 310, and 312. The gates of the FETs 306 to 312 are connected to output terminals which are other terminals of the microcomputer 300, and the microcomputer 300 performs drive control of the FETs 306 to 312. For example, the microcomputer 300 turns on the FET 306 and the FET 312 when the energization is open, and turns on the FET 308 and the FET 310 when the energization is closed. The drive circuit 304 is electrically connected to the electromagnetic valve 6 as the load 12 via the connector 314.

  The electromagnetic valve 6 is a latching type electromagnetic valve, and can maintain an open state and a closed state without continuous energization, and is excellent in low consumption.

  In the power supply circuit 210, the initial voltage of the primary battery 14 is about 3V. The primary battery 14 has a negative electrode electrically connected to the ground 318 and a positive electrode electrically connected to the storage circuit 20 via the connector 316. The primary battery 14 charges the power storage circuit 20 when the charge amount of the power storage circuit 20 is less than the charge amount of the primary battery 14, and the power storage circuit 20 when the charge amount of the power storage circuit 20 is greater than or equal to the charge amount of the primary battery 14. The battery is not charged.

  The connector 316 on the positive electrode side is connected in series in the order of the connection wiring 26, the resistor 320, and the backflow suppression circuit 214, and is electrically connected to the power storage circuit 20 through these. The resistor 320 is for limiting current so that a large current does not flow from the primary battery 14, and the reverse current suppression circuit 214 is a diode D2 for suppressing reverse charge. A varistor 322 for electrostatic protection is electrically connected as the electronic component 22 between the connection wiring 26 and the ground 234. In other words, the varistor 322 is connected in parallel with the primary battery 14. The varistor 322 has a pseudo capacitor C5 equivalently as a parasitic capacitance.

  One end of a battery detection circuit 220 that is a part of the detection unit 16 is electrically connected to the connection wiring 26 between the varistor 322 and the resistor 320. The other end of the battery detection circuit 220 is electrically connected to the input terminal I1 of the microcomputer 300. Thereby, the microcomputer 300 can measure the voltage of the primary battery 14 at the input terminal I1. And the microcomputer 300 implement | achieves the function as the detection part 16 which detects that the battery was removed by measuring the voltage of the primary battery 14. FIG.

  In addition, a storage voltage measuring circuit 224 is electrically connected between the diode D2 and the electric double layer capacitor C1.

  The stored voltage measurement circuit 224 includes a transistor 324, a transistor 326, a resistor 328, and a resistor 330. The emitter of the transistor 324 is electrically connected to the electric double layer capacitor C1. The collector of the transistor 324 is electrically connected in series with the resistor 328 and the resistor 330. The resistor 330 is electrically connected to the ground 332. The resistor 328 and the resistor 330 are electrically connected to the input terminal I2 of the microcomputer 300. The base of the transistor 324 is connected to the collector of the transistor 326. The emitter of transistor 326 is connected to ground 334. The base of the transistor 326 is connected to the output terminal O1 of the microcomputer 300.

  The microcomputer 300 outputs a signal from the output terminal O1 and turns on the transistor 324 and the transistor 326, thereby generating a voltage value divided by the resistor 328 and the resistor 330. The divided voltage is input to the input terminal I2 of the microcomputer 300, so that the microcomputer 300 can measure the storage voltage of the electric double layer capacitor C1. Even when the electric double layer capacitor C1 is charged with a voltage (5V) of 3.3V or more which is the driving voltage of the microcomputer 300, the voltage is divided by the resistor 328 and the resistor 330 so that the microcomputer 300 is not destroyed. ing.

  Further, one end of a discharge circuit 222 as a part of the discharge unit 24 is electrically connected to the output terminal O3 of the microcomputer 300. The other end of the discharge circuit 222 is electrically connected to the connection wiring 26 between the varistor 322 and the resistor 320.

  The discharge circuit 222 includes a resistor 336 and a transistor 338.

  The resistor 336 is a discharge resistor and is electrically connected to the connection wiring 26. The collector of the transistor 338 is electrically connected to the tip of the resistor 336. The emitter of transistor 338 is electrically connected to ground 340. The base of the transistor 338 is electrically connected to the output terminal O3 of the microcomputer 300.

  The microcomputer 300 can cause a discharge current to flow through the resistor 336 by turning on the transistor 338.

  In the circuit configuration of the power supply circuit 210 described above, assuming that the maximum value of the charging voltage of the power storage circuit 20 is 5 V, when the state where there is no supply from the generator 18 continues, the voltage drops to 3 V of the primary battery 14. When 14 is consumed, it drops from 3V, and when it reaches about 2V, it is time to replace the primary battery 14.

  When the primary battery 14 is removed during such replacement, reverse charging from the electric double layer capacitor C1 to the varistor 322 (pseudocapacitor C5) occurs as indicated by an arrow A1. At this time, the generator 18 generates a voltage higher than the operation-guaranteed voltage of the detection unit 16 (3.3 V, which is the driving voltage of the microcomputer 300 in the second embodiment), and the electric double layer capacitor C1 is generated by the generator 18. When a voltage higher than 3.3V is charged by the power supply from, if there is no discharge part 24, the pseudo-capacitor C5 connected to the electric double layer capacitor C1 has an electric capacity having a voltage higher than 3.3V. Can occur. If an electric capacitance having a voltage exceeding 3.3 V is generated in the pseudo capacitor C5, a voltage higher than the operation guarantee voltage (drive voltage) is also applied to the detection unit 16 (microcomputer 300) connected to the varistor 322. As a result, the microcomputer 300 is destroyed.

  Therefore, the microcomputer 300 measures the charging voltage of the electric double layer capacitor C1 at the input terminal I2. If the charging voltage exceeds 3.3V, the microcomputer 300 turns on the transistor 338, and the resistance as shown by the arrow A2 The charge (electric capacity) of the pseudo capacitor C5 is discharged via 336.

[control]
Hereinafter, the discharge process of the microcomputer 300 will be specifically described. FIG. 7 is a flowchart showing an example according to the second embodiment of the subroutine in FIG.

(Step SP30)
The microcomputer 300 as the controller unit 9 measures the voltage of the primary battery 14 based on the input input from the battery detection circuit 220 to the input terminal I1. And the microcomputer 300 transfers to the process of step SP32.

(Step SP32)
The microcomputer 300 determines whether or not the measured voltage of the primary battery 14 is equal to or lower than a predetermined value (for example, around 0 V including 0 V such as 0.1 V). If the determination is affirmative, the detector 16 determines that the primary battery 14 has been removed, and proceeds to step SP34. If the determination is negative, the detector 16 assumes that the primary battery 14 has not been removed, and proceeds to the processing of step SP40.

(Step SP34)
The microcomputer 300 outputs a signal from the output terminal O1, and turns on the transistor 324 and the transistor 326. As a result, predetermined processing is performed based on the input of the input terminal I2, and the stored voltage of the electric double layer capacitor C1 is measured. And the microcomputer 300 transfers to the process of step SP36.

(Step SP36)
The microcomputer 300 determines whether or not the measured storage voltage exceeds the drive voltage 3.3V of the microcomputer 300 as the operation guarantee voltage (storage voltage> drive voltage?). Then, the microcomputer 300 proceeds to the process of step SP38 when an affirmative determination is made, and proceeds to the process of step SP40 when a negative determination is made.

(Step SP38)
The microcomputer 300 causes the discharge current to flow through the resistor 336 by turning on the discharge circuit 222 (transistor 338 thereof) with the output from the output terminal O3. As a result, the electric capacity stored in the pseudo capacitor C5 is discharged. Then, the microcomputer 300 ends the subroutine processing shown in FIG.

(Step SP40)
The microcomputer 300 does not flow a discharge current through the resistor 336 by turning off the discharge circuit 222 (transistor 338 thereof) with the output from the output terminal O3. As a result, no discharge is performed. Then, the microcomputer 300 ends the subroutine processing shown in FIG.

[Action and effect]
As described above, according to the faucet device 200 according to the second embodiment of the present invention, each function of the detection unit 16, the discharge unit 24, and the measurement unit 28 can be realized by one microcomputer 300. Therefore, the detection unit 16, The manufacturing cost of the faucet device 200 can be reduced as compared with the case where the microcomputer 300 is provided for each discharge unit 24 and measurement unit 28. In addition, since a backflow suppression circuit 214 that suppresses backflow from the electric double layer capacitor C1 to the primary battery 14 is connected between the varistor 322, the primary battery 14, and the electric double layer capacitor C1, it is more effective than the backflow suppression circuit 214. Sudden generation of a high electric capacity in the varistor 322 on the primary battery 14 side can be suppressed.

  However, even if the backflow suppression circuit 214 is provided, backflow can occur. For example, a reverse current is generated as a general characteristic of the diode D2 as the backflow suppression circuit 214. As a result, if an electric capacitance having a voltage exceeding 3.3 V is generated in the electric double layer capacitor C1, the detection unit 16 (microcomputer 300) connected to the varistor 322 also has a voltage higher than the guaranteed operating voltage. However, before the microcomputer 300 is discharged, the destruction of the microcomputer 300 is suppressed.

  Further, when the microcomputer 300 detects that the primary battery 14 has been removed and the measurement result exceeds the operation guarantee voltage, the electric capacity of the pseudo capacitor C5 is discharged (see steps SP30 to SP38 in FIG. 7). In other cases, it is not necessary to discharge. As a result, for example, even when the primary battery 14 is removed, the microcomputer 300 can prevent discharge when the measurement result of the stored voltage is equal to or lower than the operation guarantee voltage (see step SP40 in FIG. 7). In this way, the electric power of the electric double layer capacitor C1 consumed by the microcomputer 300 performing the discharging operation is smaller than when the discharge continues even when the stored voltage of the electric double layer capacitor C1 is equal to or lower than the operation guarantee voltage. Can be suppressed.

(3) Third Embodiment Next, a faucet device according to a third embodiment of the present invention will be described.

  The configuration of the faucet device according to the third embodiment of the present invention is the same as that of the faucet device 200 according to the second embodiment. However, the configuration of the faucet device according to the third embodiment is different from that of the faucet device 200 according to the second embodiment in that the discharge circuit 222 is also used as the storage voltage measuring circuit 224. The configuration of the electric circuit is different.

[Constitution]
FIG. 8 is a diagram illustrating an example of a circuit configuration of the power supply circuit 410 included in the faucet device 400 according to the third embodiment of the present invention.

  Compared with the power supply circuit 210 shown in FIG. 6, the power supply circuit 410 does not have a resistor 336 or a transistor 338 dedicated to the discharge circuit 222. In the third embodiment, the discharge circuit 222 is provided also as the stored voltage measurement circuit 224. The other configuration of the power supply circuit 410 is the same as that of the power supply circuit 210.

[control]
At the time of discharging, the microcomputer 300 turns on the transistor 324 and the transistor 326 to set the resistor 328 and the resistor 330 as discharge resistors as shown by an arrow A3, and discharges the electric capacity of the pseudo capacitor C5 via these resistors. At this time, the electric capacity of the electric double layer capacitor C1 can also be discharged.

[Action and effect]
According to the faucet device 400 according to the third embodiment of the present invention, since the discharge circuit 222 is provided also as the stored voltage measurement circuit 224, it is not necessary to provide a separate circuit for the discharge circuit 222. In addition, since the discharge circuit 222 is positioned between the electric double layer capacitor C1 and the diode D2, it does not directly connect to the primary battery 14, so even if static electricity is generated near the primary battery 14, the diode D2 or the like It is possible to prevent static electricity from being transmitted to the previous discharge circuit 222.

(4) Fourth Embodiment Next, a faucet device according to a fourth embodiment of the present invention will be described.

  The configuration of the faucet device according to the fourth embodiment of the present invention is the same as that of the faucet device 200 according to the second embodiment. However, the configuration of the faucet device according to the fourth embodiment is different from that of the faucet device 200 according to the second embodiment in that the discharge circuit 222 is also used as the battery detection circuit 220. The configuration of the electric circuit is different.

[Constitution]
FIG. 9 is a diagram illustrating an example of a circuit configuration of the power supply circuit 510 provided in the faucet device 500 according to the fourth embodiment of the present invention.

  The connection destination of the battery detection circuit 220 is different from that of the power supply circuit 210 shown in FIG. In the fourth embodiment, the battery detection circuit 220 is electrically connected between the resistor 336 and the transistor 338. As a result, the battery detection circuit 220 is interposed between the primary battery 14 and the resistor 336. The other configuration of the power supply circuit 510 is the same as that of the power supply circuit 210.

  When discharging, the microcomputer 300 turns on the transistor 338 to discharge the electric capacity of the pseudo capacitor C5 via the resistor 336 as indicated by an arrow A4.

[Action and effect]
As described above, according to the faucet device 500 according to the fourth embodiment of the present invention, the battery detection circuit 220 has the resistor 336 interposed between the battery detection circuit 220 and the primary battery 14, thereby suppressing static electricity from being transmitted to the microcomputer 300. Can do.

  If the battery detection circuit 220 includes a resistor 336, the discharge circuit 222 can use the resistor 336 of the battery detection circuit 220 as a discharge resistor. That is, the discharge circuit 222 is provided also as the battery detection circuit 220. As a result, it is not only necessary to provide a separate circuit for the discharge circuit 222 (however, the transistor 338 is provided), and the discharge circuit 222 is located between the primary battery 14 and the diode D2, The discharge circuit 222 can suppress discharging to the electric double layer capacitor C1 ahead of the diode D2. As a result, even after the primary battery 14 is removed, the microcomputer 300 can continue the operation for a long time and can shorten the discharge time.

  Further, according to the water faucet device 500, the voltage of the primary battery 14 can be measured in a state where a current is passed through the resistor 336 serving as a discharge resistor. That is, the voltage of the primary battery 14 can be measured when there is no load and when it is loaded, and the remaining battery level can be accurately measured.

(5) Fifth Embodiment Next, a faucet device according to a fifth embodiment of the present invention will be described.

  The configuration of the faucet device according to the fifth embodiment of the present invention is the same as that of the faucet device 200 according to the second embodiment. However, the configuration of the faucet device according to the fifth embodiment is different from that of the faucet device 200 according to the second embodiment in that the discharge circuit 222 is also used as a power supply control circuit. The circuit configuration is different.

[Constitution]
FIG. 10 is a diagram illustrating an example of a circuit configuration of the power supply circuit 610 included in the faucet device 600 according to the fifth embodiment of the present invention.

  The power supply circuit 610 is provided with a power supply control circuit 612 that controls on / off of power supply from the primary battery 14 to the electric double layer capacitor C1 between the primary battery 14 and the diode D2. The power supply control circuit 612 includes an FET 614, a transistor 616, a transistor 618, and a resistor 620.

  The source of the FET 614 is electrically connected to the connection wiring 26. The drain of the FET 614 is electrically connected to the resistor 320. The gate of the FET 614 is electrically connected to the resistor 620. Resistor 620 is electrically connected to ground 624.

  The emitter of the transistor 616 is electrically connected to the connection wiring 26. The collector of the transistor 616 is electrically connected to the resistor 620. The base of the transistor 616 is electrically connected to the collector of the transistor 618. The emitter of transistor 618 is electrically connected to ground 622. The base of the transistor 618 is electrically connected to the output terminal O3 of the microcomputer 300.

  The power supply circuit 610 does not have the resistor 336 or the transistor 338 dedicated to the discharge circuit 222. Instead, the discharge circuit 222 is provided also as the power supply control circuit 612.

  Note that the battery detection circuit 220 is electrically connected between the FET 614 and the varistor 322. The other configuration of the power supply circuit 610 is the same as that of the power supply circuit 210.

[control]
The microcomputer 300 supplies power from the primary battery 14 to the electric double layer capacitor C1 by turning on the FET 614 of the power supply control circuit 612. Further, turning off the FET 614 turns off the power supply from the primary battery 14 to the electric double layer capacitor C1. This power supply control circuit 612 is used when it is desired to intentionally cut off charging from the primary battery 14 (when it is desired to save the primary battery 14). For example, when the voltage of the electric double layer capacitor C1 is less than 3V, but the charging from the generator 18 can be expected in the near future, the FET 614 is turned off (see Japanese Patent Application Laid-Open No. 2008-138369).

  Here, at the time of discharge, the microcomputer 300 turns on the transistor 618 and the transistor 616, thereby increasing the electric capacity of the pseudo capacitor C5 via the resistor 620 and via the transistor 618 and the transistor 616 as indicated by arrows A5 and A6. Discharge.

[Action and effect]
As described above, according to the faucet device 600 according to the fifth embodiment of the present invention, since the discharge circuit 222 is provided also as the power supply control circuit 612, it is not necessary to provide a separate circuit for the discharge circuit 222. In addition, since the discharge circuit 222 is positioned between the primary battery 14 and the diode D2, it is possible to suppress the discharge to the electric double layer capacitor C1 ahead of the diode D2 by the discharge circuit 222. As a result, even after the primary battery 14 is removed, the microcomputer 300 can continue the operation for a long time and can shorten the discharge time.

  In addition, according to the water faucet device 600, the voltage of the primary battery 14 can be measured in a state where a current flows through the resistor 620 serving as a discharge resistor. That is, the voltage of the secondary battery 14 can be measured when there is no load and when it is loaded, and the remaining battery level can be accurately measured.

(6) Sixth Embodiment Next, a faucet device according to a sixth embodiment of the present invention will be described.

  The configuration of the faucet device according to the sixth embodiment of the present invention is the same as that of the faucet device 200 according to the second embodiment. However, the configuration of the faucet device according to the sixth embodiment is different from that of the faucet device 200 according to the second embodiment after a predetermined time has elapsed after the start of discharging the electric capacity of the electronic component 22. In this case, the subroutine processing shown in FIG.

[control]
FIG. 11 is a flowchart showing an example according to the sixth embodiment of the subroutine in FIG.

  The processing from step SP30 to step SP40 is the same as the processing shown in FIG. However, after the process of step SP38, the microcomputer 300 proceeds to the process of step SP100.

(Step SP100)
The microcomputer 300 waits for a predetermined time, for example, 1 second. Then, the microcomputer 300 proceeds to the process of step SP102.

(Step SP102)
The microcomputer 300 does not flow a discharge current through the resistor 336 by turning off the discharge circuit 222 (transistor 338 thereof) with the output from the output terminal O3. As a result, the discharge ends. Then, the microcomputer 300 ends the subroutine processing shown in FIG.

[Action and effect]
As described above, according to the faucet device according to the sixth embodiment of the present invention, when the discharge circuit 222 starts discharging the electric capacity of the electronic component 22, the discharge ends when a predetermined time elapses. The power consumed by the discharge circuit 222 being continuously discharged can be suppressed.

(7) Modifications The embodiment of the technology disclosed in the present application has been described above, but the technology disclosed in the present application is not limited to the above.

  For example, in the second to sixth embodiments, the case where the measurement unit 28 measures the voltage of the electric double layer capacitor C1 has been described, but instead of this measurement, the voltage of the pseudo capacitor C5 may be measured. . For example, the microcomputer 300 periodically checks the voltage value of the pseudo capacitor C5, and the voltage value increases from 1V to 2V. For example, when the voltage becomes 3V lower than the operation guarantee voltage, the microcomputer 300 If it is turned on, destruction of the microcomputer 300 is suppressed.

  The elements included in each of the embodiments described above can be combined as much as technically possible, and combinations thereof are also included in the scope of the present invention as long as they include the features of the present invention.

9 ... Controller part (control device)
14 ... Primary battery 16 ... Detection unit 18 ... Generator (power generation unit)
20 ... Electric storage circuit (electric storage unit)
DESCRIPTION OF SYMBOLS 22 ... Electronic component 24 ... Discharge part 28 ... Measuring part 100, 200, 400, 500, 600 ... Water faucet device 214 ... Backflow suppression circuit 220 ... Battery detection circuit (detection circuit)
222... Discharge circuit 224... Storage voltage measurement circuit (measurement circuit)
612 ... Feed control circuit

Claims (8)

A primary battery,
A detection unit connected to the primary battery and detecting that the primary battery has been removed;
A power generation unit capable of generating a voltage higher than the operation guarantee voltage of the detection unit; and
A power storage unit connected to the primary battery and the power generation unit, and capable of charging a voltage higher than the operation guarantee voltage by power feeding from the power generation unit,
An electronic component that is connected between the primary battery and the power storage unit and connected to the detection unit, and stores electric capacity;
When detecting that the primary battery is removed in the detection unit, a discharge unit for discharging the electric capacity of the electronic component;
A faucet device comprising: A measurement unit that measures at least one of a parameter related to a storage amount of the power storage unit and a parameter related to the electric capacity of the electronic component;
The discharge unit operates with the power of the power storage unit, detects that the primary battery has been removed in the detection unit, and when the measurement result by the measurement unit exceeds a predetermined value, Discharging the electric capacity of the electronic component;
The faucet device according to claim 1. The measurement unit measures the voltage of the power storage unit as the parameter,
The discharge unit detects that the primary battery is removed in the detection unit, and the electronic component when the measurement result by the measurement unit exceeds the operation guaranteed voltage as the predetermined value. Discharging the capacitance of
The faucet device according to claim 2. The discharge unit ends discharge when a predetermined time has elapsed after starting discharge of the electric capacity of the electronic component.
The faucet device according to claim 2 or 3. The detection unit includes a control device that operates with electric power of the power storage unit, and a detection circuit connected to the control device and the primary battery, and detection is performed based on an input from the detection circuit by the control device. Done,
The discharge unit includes the control device and a discharge circuit connected to the control device and the electronic component, and discharge is performed by the control of the discharge circuit by the control device,
The measurement unit includes the control device and a measurement circuit connected to the control device and the power storage unit, and measurement is performed based on an input from the measurement circuit by the control device,
A backflow suppression circuit that suppresses a backflow of current from the power storage unit to the electronic component is connected between the electronic component and the primary battery and the power storage unit.
The faucet device according to any one of claims 2 to 4. The discharge circuit is provided also as the measurement circuit connected between the power storage unit and the backflow suppression circuit,
The faucet device according to claim 5. Between the primary battery and the backflow suppression circuit, a power supply control circuit for on / off control of power supply from the primary battery to the power storage unit is provided,
The discharge circuit is provided also as the power supply control circuit,
The faucet device according to claim 5. The discharge circuit is provided also as the detection circuit,
The faucet device according to claim 5.

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