JPH0750447Y2 - Water supply control device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply control device for automatically controlling water supply and stoppage of water supply to a toilet bowl, a toilet bowl or the like, based on human detection of the use of the water washer by a sensor. Washing device, a sensing unit for sensing a human body using the washing device, a control unit for outputting an opening / closing signal based on a sensing signal input from the sensing unit, and a washing device by the opening / closing signal input from the control unit The present invention relates to a water supply unit that opens and closes a valve arranged in a flow path that connects a water supply source, and a battery that energizes each of these units.

[0002]

2. Description of the Related Art Conventionally, as a water supply control device of this type, when a current is supplied from a battery to a control unit as disclosed in, for example, Japanese Patent Laid-Open No. 59-126831, a light projecting circuit outputs the current to a light projecting element of a sensing unit. By projecting infrared rays from the light projecting element, the infrared rays hit the user of the water washing device and are reflected, and the light receiving element receives the reflected light and outputs a sensing signal to the light receiving circuit of the control unit. There is a device in which the user is detected and the water supply unit is automatically opened.

Further, as disclosed in Japanese Utility Model Application Laid-Open No. 57-66073, a non-contact sensing unit for detecting an electrical change when a human body approaches a certain range is attached to a floor or a side surface of the defecation chamber, By continuously operating the detection circuit power supply up to the output switch for human body detection control that operates by inputting the output signal from the sensing unit, after detecting that the user has surely entered the defecation room, There is an output switch for human body detection control in which power is supplied to an automatic cleaning circuit and a water supply control valve required for performing a cleaning operation.

[0004]

However, in such a conventional water supply control device, the sensing part and the human body detection control part are continuously energized throughout the day, especially for users of the water washing device. Since the sensing unit and human body detection control unit continue to operate even at night, the power is always consumed regardless of day and night, and as a result, the battery life is shortened and it is necessary to frequently replace the battery. There is a problem that the replacement work is not only troublesome but also uneconomical. In view of such conventional circumstances, the present invention aims to completely cut off the power supply to the sensing unit and the human body detection control unit at night when there is no user.

[0005]

The technical means provided by the present invention to solve the above-mentioned problems includes a human body detection control unit for outputting a detection signal from the detection unit to the detection unit by the control unit. In the circuit that connects the human body detection control unit and the sensing unit to the battery, an optical sensor that generates an electromotive force by receiving visible light and a switch unit that opens and closes the circuit based on the output from the optical sensor. It is characterized by being provided.

[0006]

According to the above technical means of the present invention, the light sensor receives an illumination light beam or a sun ray during the day, and the electromotive force of the light sensor causes the switch portion to open a circuit to detect the human body detection control portion and sensing from the battery. When the light sensor does not receive illumination light rays or sunlight rays at night, the switch unit closes the circuit, and the electricity supply from the battery to the human body detection control unit and the sensing unit is stopped.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1, the flushing device (1) is a urinal (1a). Above the urinal (1a),
To be precise, while the user stands in front of the urinal (1a), the sensing unit (2) is embedded in the wall surface (A) having a height corresponding to the user's chest, and water is supplied. The part (4) uses a latching solenoid.

The sensing section (2) is a diffuse reflection type infrared sensor having a light emitting element (2a) made of a light emitting diode and a light receiving element (2b) made of a phototransistor.
The battery (5) of the driving power source is communicated via the control unit (3) described later.

The light projecting element (2a) communicates with a light projecting drive circuit (3a5) of the control unit (3) described later, and the circuit (3a5).
) Emits infrared rays, and the infrared rays hit a user standing in front of the urinal (1a) for convenience and diffusely reflect it, and a part of the reflected light is received by the light receiving element ( When the light is received by 2b), it is output to the light receiving amplifier circuit (3a6) described later.

The control unit (3) is electrically connected to the battery (5), and if the inside is roughly divided, it outputs to the sensing unit (2) and inputs the sensing signal from the sensing unit (2). It consists of a detection control unit (3a) and a water supply control unit (3b) that opens and closes the main valve (4i) by outputting an opening / closing signal to the water supply unit (4) by input from this human body detection control unit (3a). An optical sensor (7) and a switch unit (8) are provided in the circuit (6) that communicates with the battery (5).

The optical sensor (7) is a semiconductor element such as a solar cell which produces an electromotive force due to irradiation of light or a photoconductive cell whose conductivity changes, and in this embodiment, its detection surface (7a) is exposed to the indoor side. Is embedded in the wall surface (A) so that the detection surface is illuminated with indoor illumination light or sunlight, the switch section (8)
To the ON state, and when not irradiated, the switch section (8) is turned OFF.

The switch section (8) is a semiconductor switch such as a transistor or thyristor, which is turned on / off by the output from the optical sensor (7). In the ON state, the circuit (6) is opened and the current from the battery (5) is turned on. Energize the control unit (3),
In the OFF state, the circuit (6) is closed to prevent current from passing from the battery (5) to the control unit (3).

Therefore, the switch (8) is turned on by the output from the optical sensor (7) to turn on the battery (5) during the time when the indoor lighting is turned on or when there is a user with sunlight.
When the user is detected in this state by energizing from the control unit (3), the main valve (4i) of the water supply unit (4) is opened to supply flush water to the urinal (1a). There is no output from the optical sensor (7) at night when the indoor lighting goes out, and there is no switch (8).
Is turned off and the power supply from the battery (5) to the control unit (3) is stopped, and in this state, the user turns the urinal (1a)
The sensing part (2) and the water supply part (4) do not operate even if the above is used.

A time chart of such an optical sensor (7) is shown in FIG. The structure of the human body detection control unit (3a) will be described with reference to FIG.
1) a pulse signal is continuously transmitted at a predetermined cycle t, for example, a cycle of 1 second, and this pulse signal is divided by a 1/2 frequency divider (3a2
) And the multiplexer (3a3).

The ½ frequency divider (3a2) obtains ½ the frequency of the pulse signal from the multivibrator (3a1) and continuously transmits the pulse signal at a period of 2t, that is, a period of 2 seconds. The pulse signal of this cycle 2t is also output to the multiplexer (3a3).

The multiplexer (3a3) is an OR circuit (3a4).
), The multivibrator (3a1) outputs a pulse signal with a cycle t or a 1/2 frequency divider (3a2) outputs a pulse signal with a cycle 2t. The multiplexer (3a
The selected output from 3) is input to the light emitting drive circuit (3a5), and infrared rays are emitted from the light emitting element (2a) based on the output from the light emitting drive circuit (3a5).

That is, the infrared light projection period from the light projecting element (2a) is t or 2 depending on the selection signal from the OR circuit (3a4).
Selected to t.

On the other hand, the light receiving amplifier circuit (3a6) connected to the light receiving element (2b) has no reflected light when the light receiving element (2b) does not receive light even if infrared light is projected from the light projecting element (2a). A one-shot pulse signal is output from the one-shot circuit (3a7), and this pulse signal is output to the flip-flop (3a8
) And the counter (3a9) clear.

When the light receiving element (2b) receives light, a one-shot pulse signal with reflected light is output from the one-shot circuit (3a10), and the pulse signal is set by the flip-flop (3a8) and the counter (3a9). ) Is output to the count.

Normally, when the user is not in front of the urinal (1a), the multiplexer (3a3) first selects the period 2t and projects the light from the light projecting element (2a) at the period 2t, but there is no reflected light. Since the pulse signal is output from the one-shot circuit (3a7) to the clear of the flip-flop (3a8), Low is output from the flip-flop (3a8).
ow output is input to the OR circuit (3a4), and
Furthermore, since there is no output from the flip-flop (3a13) to be described later to the water supply control unit (3b), the selection of the multiplexer (3a3) remains the cycle 2t.

Since the light receiving element (2b) receives the reflected light even once to detect the presence of the user, the one-shot circuit (3a10) with the reflected light outputs it to the set of the flip-flops (3a8). , Hi is output from the flip-flop (3a8) to the OR circuit (3a4) to switch the multiplexer (3a3) from the cycle 2t to the cycle t as shown in FIG. 2, and thereafter, from the light projecting element (2a) at the cycle t. Let the light project.

The counter (3a9) is a one-shot circuit (3a7) without reflected light when no user is detected.
The pulse number is 0 because the pulse signal is input from the clear, but when the user is detected, the pulse signal is input to the count from the one-shot circuit (3a10) with reflected light, so the counting is started. If this state continues, there is reflected light and the count number is increased each time a pulse signal is input from the one-shot circuit (3a10) to the count, and this count number is output to the digital comparator (3a11), after which the user When it leaves the front of the toilet (1a), the pulse signal is input to the clear one-shot circuit (3a8) without reflected light to reset the count number to 0.

The digital comparator (3a11) compares the count number input from the counter (3a9) with a detection count setting value preset by the detection count setting circuit (3a12), for example, 2, and sets the count number to the detection count setting. When the value is smaller than 2, it is not output to the flip-flop (3a13), but at the same time when the count number becomes larger than the detection count set value 2, Hi is output to the flip-flop (3a13), and thereafter, the count number becomes 0 at the same time. Output Low.

When the input from the digital comparator (3a11) falls from Hi to Low, the flip-flop (3a13) outputs H to the AND circuit (3a14) and the water supply controller (3b).
Output i.

The AND circuit (3a14) connects the other input terminal to the light projecting drive circuit (3a5) and outputs it from the circuit (3a5) to the water supply controller (3b) at Hi level.
When is output, it is output to the shift register (3a15).

The shift register (3a15) is provided with a plurality of Q outputs instead of Hi each time it is output from the light emission drive circuit (3a5), and the output count set value is set according to the number of Q outputs. When the Q output of the eye becomes Hi, a pulse signal is output from the one-shot pulse circuit (3a16).

This pulse signal is applied to the shift register (3a15)
And the flip-flop (3a13) to clear both of them, and the water supply control unit (3
The output to b) is switched from Hi to Low, and the output to the OR circuit (3a4) is set to Low.

Therefore, when the user leaves the urinal (1a) by using the urinal (1a), the flip-flop (3a13)
When the output of Hi is input to the water supply control unit (3b) from the water supply and the pulse signal of the one-shot pulse circuit (3a16) is output by the output from the shift register (3a15), the output from the flip-flop (3a13) is Low. Switch to. At this time, since there is no user, the output from the flip-flop (3a8) is also low, the output from the OR circuit (3a4) disappears, and the multiplexer (3a3) is switched to the cycle 2t. The light is emitted at a period of 2t from 2a).

FIG. 4 shows a time chart of the human body detection control section (3a). Next, the configuration of the water supply controller (3b) is shown in FIG.
The input, that is, the flip-flop (3a
The Hi output from 13) is output to the open side AND circuit (3b1) and N
It is inputted to the close side AND circuit (3b3) via the OT circuit (3b2) and also inputted to the exclusive OR circuit (3b4).

The exclusive OR circuit (3b4) has a resistor R and a capacitor C on one input side so that the output from the flip-flop (3a13) is switched from Low to Hi and is switched from Hi to Low. When it changes, it outputs a pulse signal.

Normally, in the state where the user is not detected,
Since the input to the exclusive OR circuit (3b4) is Low, no pulse signal is output from the circuit (3b4), and the open drive transistor (3b9) and the close drive transistor (3b19) described later are turned off. Holds the state.

When the output from the flip-flop (3a13) to the water supply controller (3b) is switched from Low to Hi,
Hi is input to one input terminal of the open side AND circuit (3b1) and NOT is input to one input terminal of the close side AND circuit (3b3).
Low is input through the circuit (3b2) and a pulse signal is output from the exclusive OR circuit (3b4).

This pulse signal is a flip-flop (3b5
) To output Hi, and another flip-flop (3b6) to input Q output to Hi,
The Q output goes low, and it is also input to the 50msec one-shot timer (3b7) to start its operation and turn the Q output to Hi.

The output of the flip-flop (3b5) and 5
The output of the 0 msec one-shot timer (3b7) is input to the AND circuit (3b8), but since both are Hi, the circuit (3b8) is connected to the other input terminal of the open side AND circuit (3b1) and the closed side AND circuit. Hi is output to the other input terminal of (3b3).

Therefore, in the open side AND circuit (3b1), both input terminals become Hi, and the open drive transistor (3b9).
To the ON state.

When the open drive transistor (3b9) is turned on, the drive current I is started to be supplied from the battery (5) which is the drive current to the operating coil (4a) of the latching solenoid (4) described later, and the coil (4a) is started. ) Drive current I applied to
Returns again to the battery (5) via the open drive transistor (3b9) and the resistor R.

At this time, the voltage generated in the open drive transistor (3b9) is detected by the voltage detection circuit (3b10), and this detection voltage is detected by the peak detection circuit (3b11), the margin addition circuit (3b12) and the bottom detection circuit. (3b13) and the margin subtraction circuit (3b14).

Further, the Q of the flip-flop (3b6)
When the output becomes Hi, the operation of the peak detection circuit (3b11) is started, but since the Q output is Low, the operation of the bottom detection circuit (3b13) remains stopped.

On the other hand, the time-current characteristics of the latching solenoid used in the water supply section (4) during energization are as shown in FIG. 6, when energization of the operating coil (4a) or return coil (4b) begins The current rises due to the application of current to the valve, and after a predetermined time, the current once decreases due to the generation of counter electromotive force due to the movement of the plunger (4c).
Since the back electromotive force becomes 0 by opening or closing the valve in d),
Since then, the current continues to rise, and it has been found that the time required from the start of energization until the current once falls and then starts to rise again is at most about 10 msec. .

The peak detection circuit (3b11) follows only a high voltage, detects the maximum current value due to the current application to the operating coil (4a), and sends the maximum current value to the peak detection ON comparator (3b15). Output.

The peak detection ON comparator (3b15) compares the current maximum value with the output obtained from the margin adding circuit (3b12) in which a predetermined margin is added to the current waveform when the latching solenoid (4) is energized, The circuit (3b1
When the output obtained from 2) becomes smaller than the current maximum value, it is output to the clear of the flip-flop (3b6) at that point.

When the clear of the flip-flop (3b6) is input, the Q output becomes Low and the peak detection circuit (3b6)
When the operation of 11) is stopped, the Q output becomes Hi and the operation of the bottom detection circuit (3b13) is started.

The bottom detection circuit (3b13) follows only a low voltage. When the valve section (4d) is opened, that is, the minimum current value of the counter electromotive force of 0 is detected, and the minimum current value is used for bottom detection ON. Output to comparator (3b16).

The bottom detection ON comparator (3b16) compares the minimum current value with the output obtained from the margin subtraction circuit (3b14) obtained by subtracting a predetermined margin from the current waveform when the latching solenoid (4) is energized. Circuit (3b1
When the output obtained from 4) exceeds the minimum current value and becomes large, it is output to the clear of the flip-flop (3b5) at that point.

When the clear of the flip-flop (3b5) is input, the output becomes Low and the AND circuit (3b8) outputs Low to the open side AND circuit (3b1). Therefore, the open drive transistor (3b9) is It is turned off and the drive current I from the battery (5) to the operating coil (4a) is stopped.

When the open drive transistor (3b9) is ON, the output obtained from the margin addition circuit (3b12) does not decrease below the current maximum value due to some abnormality, or the margin subtraction circuit (3b14) does not decrease. It is possible that the output obtained from) is not large enough to exceed the current minimum value. In these cases, the flip-flop (3b5)
Since there is no input to clear, the open drive transistor (3b
9) remains ON, the energization from the battery (5) to the operating coil (4a) is not stopped, and it is energized and released.

However, even if such an abnormal state occurs, it will be 5 after the input to the water supply control section (3b) becomes Hi.
After 0 msec, the 50 msec one-shot timer (3b7) times up and the Q output becomes Low and the AND circuit (3b8)
Since the output from the device switches from Hi to Low, the open drive transistor (3b9) is turned off and the energization from the battery (5) to the operating coil (4a) is stopped, and further the Q output is Hi.
Therefore, the output from the NAND circuit (3b17) is Low.
Then, the non-operation lamp (3b18) is turned on to notify the user of the abnormal state.

Then, a pulse signal is generated from the one-shot pulse circuit (3a16) by the output from the shift register (3a15), and the flip-flop (3a) is generated by this pulse signal.
When the output from 13) to the water supply control unit (3b) is switched from Hi to Low, Low is input to one input terminal of the open side AND circuit (3b1) and one input terminal of the closed side AND circuit (3b3). Hi is input through the NOT circuit (3b2), and the exclusive OR circuit (3b4) outputs a flip-flop (3b5) (3b6) and a 50 ms one-shot timer (3b).
A pulse signal is output to 7).

Therefore, both input terminals of the closed side AND circuit (3b3) become Hi, and the close driving transistor (3b19).
To the ON state.

When the closing drive transistor (3b19) is turned on, the drive current I is started to flow from the battery (5) to the return coil (4b) of the latching solenoid (4) described later.

After that, similarly to the above-mentioned open drive transistor (3b9), the maximum current value obtained by applying the current to the return coil (4b) in the peak detection circuit (3b11) and the margin addition circuit (3b12). The obtained margin addition output is compared with the peak detection ON comparator (3b15),
When the margin addition output exceeds the maximum current value and becomes smaller, the flip-flop (3b6) is cleared at that point, and the bottom detection circuit (3b14) further subtracts the minimum current value obtained when the valve section (4d) is closed and the margin. The margin subtraction output obtained from the circuit (3b14) is compared by the bottom detection ON comparator (3b16), and when the margin subtraction output exceeds the current minimum value and becomes large, at that time the flip-flop (3b5)
By clearing and closing the closing drive transistor (3b19) to the OFF state, the battery (5) returns coil (4b)
The supply of the drive current I to the drive is stopped.

FIG. 7 shows a time chart of the water supply controller (3b). The water supply part (4) moves the plunger (4c) up and down to open and close the valve part (4d) by energizing the operating coil (4a) and the return coil (4b) as shown in FIGS. 8 and 9. In the latching solenoid with the structure shown in the figure, the lower surface of the plunger (4c) is first brought into contact with and separated from the pilot hole (4f) opened in the center of the diaphragm (4e), and the valve section (4d) is opened and closed to open the diaphragm. By moving water in and out of the pressure chamber (4g) formed behind (4e),
By moving the diaphragm (4e) up and down, the lower surface of the diaphragm (4e) is brought into contact with and separated from the valve seat (4h), and the main valve (4i) is opened and closed to supply flush water to the urinal (1a). is there.

The operating coil (4a) and the return coil (4b) are vertically stacked in a metal case (4j), and a metal head (inside) of both coils (4a) and (4b). 4k) and insert the upper part of the head (4k) into the case (4k
It is fixed to h) and a plunger (4c) is installed below this head (4k).

The plunger (4c) is the return coil (4b).
A plunger (4c) is installed in the lower part of the plunger (4c) to push down the plunger (4c) in the normally closing direction, that is, downward, and a permanent magnet (4m) is attached to the outer periphery of the plunger (4c). ) Is placed in contact with the lower surface of the case (4j).

Then, such a latching solenoid (4)
In the state where the user is not detected, the plunger (4c) is elastically pressed downward by the spring (4l) to close the pilot hole (4f).
At this time, the magnetic flux of the permanent magnet (4m) acts in the direction of attracting the plunger (4c), the pilot hole (4f) is held closed by the lower surface of the plunger (4c), and the main valve (4e)
Keeps the valve closed.

In this state, when the operating coil (4a) is energized now, a magnetic flux is generated which tries to attract the plunger (4c) upward, and this magnetic flux is gradually strengthened to energize the operating coil (4a), for example. Within about 10 ms after the start, the plunger (4c) starts to move up to generate a counter electromotive force, and the blocked pilot hole (4f) opens to open the valve section (4d). Becomes 0.

When the valve portion (4d) is opened, water in the pressure chamber (4g) is discharged to the secondary side from the pilot hole (4f), and the lower surface of the diaphragm (4e) is separated from the valve seat (4h). The main valve (4i) opens.

After that, the plunger (4c) continues to move upward, compresses the spring (4l), and finally the plunger (4c).
The upper surface of c) contacts the lower surface of the head (4k) and the back electromotive force is zero.
Becomes

The magnetic flux of the permanent magnet (4m) at this time returns from the outside of the magnet (4m) to the inside of the permanent magnet (4m) through the case (4j), the head (4k) and the plunger (4c). And the plunger (4c) remains attracted by the head (4k), that is, the valve open state shown in FIG. 9 is maintained.

To turn the valve open state to the valve closed state again, when the return coil (4b) is energized, a magnetic flux in the direction opposite to the magnetic flux circulation path of the permanent magnet (4m) is generated. Gradually becomes stronger, for example, after the energization of the return coil (4b) begins, the elastic force of the spring (4l) begins to move down the plunger (4c) within about 10 msec to generate a counter electromotive force and the plunger. The lower surface of (4c) closes the pilot hole (4f) and the valve portion (4d) closes, so that the counter electromotive force becomes zero. When the valve part (4d) opens, the water on the primary side flows into the pressure chamber (4g) from the small hole (4n) opened on the outer peripheral side of the diaphragm (4e), and the diaphragm (4e) is supplied by the water supply pressure. The main valve (4i) closes when the lower surface of the valve seats on the valve seat (4h), resulting in the state shown in FIG.

In the embodiment shown above, the case where the flushing device (1) is the urinal (1a) is shown, but the invention is not limited to this, and the flushing device (1) is a hand washing device as shown in FIG. 10, for example. (1b)
May be

In this case, the sensing unit (2) and the optical sensor (7) are provided on the wall surface (A) on the rear upper surface of the hand washing device (1b), and the hand washing device (1b) is approached for hand washing. When the sensing unit (2) detects the user, the water supply unit (4) is energized to start water supply from the water discharger (1b1), and after washing the hand, handwasher (1b)
The water supply is stopped when the user is farther away.

That is, as shown in FIG. 11, the one-shot pulse circuit with reflected light (3a10) causes the flip-flop (3a13) to output High from Low, and the one-shot pulse circuit without reflected light (3a7) flip-flops (3a7). 3a13) outputs Low output from Hi.

Lo from this flip-flop (3a13)
At the time of outputting from w to Hi or from Hi to Low, the water supply controller (3b) operates similarly to the previous embodiment.

Further, when Hi is output from the flip-flop (3a13) to the water supply control unit (3b), the multiplexer (3a3) is switched from the cycle 2t to the cycle t, and when Low is output, the cycle t. To cycle 2t.

Further, in the embodiment shown above, the sensing unit (2)
Although the optical sensor (7) and the optical sensor (7) are embedded in the wall surface (A), the mounting structure of the sensing unit (2) and the optical sensor (7) is not limited to that shown in the drawing, and is arbitrary.

[0067]

The present invention has the following advantages due to the above configuration. During the daytime, the light sensor receives illumination rays and sun rays, and the electromotive force causes the switch section to open the circuit and the battery to energize the human body detection control section and the sensing section. By not receiving the light beam, the switch part closes the circuit and the power supply from the battery to the human body detection control part and the sensing part is stopped, so the power supply to the sensing part and the human body detection control part is performed at night when there is no user. You can completely turn it off.

Therefore, electricity is continuously applied to the sensing unit and the human body detection control unit all day long, and the sensing unit and the human body detection control unit are continuously operated even at night when there is no user of the washing machine. Compared with the ones, the battery life is extended by the amount of power consumption at night, and it is not necessary to change batteries frequently, which not only has the economical advantage of greatly reducing maintenance costs, but also greatly reduces the labor of battery replacement. To be done.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a water supply control device according to an embodiment of the present invention.

FIG. 2 is a time chart of an optical sensor.

FIG. 3 is a block diagram of a human body detection control unit.

FIG. 4 is the same time chart.

FIG. 5 is a block diagram of a water supply control unit.

FIG. 6 is a graph showing time-current characteristics when a latching solenoid is energized.

FIG. 7 is a time chart of a water supply control unit.

FIG. 8 is an enlarged vertical sectional view of a water supply section showing a closed state of a main valve.

FIG. 9 is an enlarged vertical cross-sectional view of a water supply section showing an opened state of a main valve.

FIG. 10 is a partially cutaway front view showing a case where the water washing device is a hand washing device.

FIG. 11 is a block diagram of a human body detection control unit.

[Explanation of symbols]

 1 Washer 2 Sensor 3 Control 3a Human Body Detection Control 4 Water Supply 5 Battery 6 Circuit 7 Optical Sensor 8 Switch

Claims (1)

[Scope of utility model registration request] 1. A flushing device, a sensing unit for sensing a human body using the flushing device, a control unit for outputting an opening / closing signal based on a sensing signal input from the sensing unit, and an opening / closing signal from the control unit. In a water supply control device including a water supply unit that opens and closes a valve provided in a flow path that connects a water washing device and a water supply source by input, and a battery that energizes each of these units, the control unit detects
Human body test that outputs the detection signal from the sensing section to the sensing section
It has an output control unit, and these human body detection control unit, sensing unit and power
Based on the output from the optical sensor that generates electromotive force by receiving visible light in the circuit that communicates with the pond,
Water supply control apparatus being characterized in that a switch section for opening and closing the circuit.