JPS62156447A - Water supply control apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a water supply control device that automatically controls the water supply to a water washer such as a toilet bowl or a washbasin based on the detection of the use of the water washer by a sensing section. , especially those whose driving power source is a battery.

<Prior art> Conventionally, as a water supply control device for this scale,
The one disclosed in Japanese Patent No. 6831 is known.

To explain the method disclosed in Japanese Patent Application Laid-Open No. 59-126831, the sensing section constantly emits infrared rays several thousand times per second from a light projecting element, and this infrared ray hits the user of the toilet and is reflected. It is composed of a diffuse reflection type photoelectric sensor that generates a sensing signal when a light-receiving element receives the reflected light.When the user leaves in front of the toilet and the light-receiving element stops receiving light, the control unit sends a signal to the water supply unit. A valve signal is output to open the valve, and a dedicated timer installed in the υ control unit is energized to start its operation. When the timer times up, an m valve signal is output to the water supply unit to close the valve. It has become.

Therefore, the sensing part is always emitting infrared light at 05' and continuously, which requires a large amount of electricity, and it is also necessary to energize the timer for the water supply valve installed in the control part. As a result, power consumption has further increased.

In other words, although the conventional device described above uses a battery as a driving power source, it consumes a large amount of power, so the battery life is short and it is necessary to replace the battery frequently, which is not only troublesome but also uneconomical. .

<Problems to be Solved by the Invention> A problem to be solved by the present invention is to reduce the power consumption of the sensing section and the control section.

Means for Solving the Problems> Technical means taken by the present invention to solve the above problems include a water washer, a sensing part that detects the use of the water washer, and a sensing signal from this sensing part. In a water supply control device that uses a battery as a driving power source, the water supply control device includes a control unit that sends an opening/closing signal to a water supply unit C based on the timing, and a water supply unit that opens a valve in response to an opening signal from the control unit, and uses a battery as a driving power source. It is composed of an infrared sensor having a light element and a light receiving element, and the light emitting element emits infrared light intermittently at a predetermined period. It is characterized by outputting a synchronized opening/closing signal to the water supply section.

<Function> The present invention intermittently emits infrared rays from a light emitting element to create a non-light emitting state intermittently that does not consume power, and uses the light emitting period to supply water with an opening/closing signal synchronized with this. By outputting the signal to the water supply section, the water supply section can be closed without using a timer.

<Example> An example of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIG.
Case (Ia) is shown above the urinal (1a), more precisely, when the user is standing in front of the urinal (1a), the wall surface (A ) to the sensing part (2
) is installed in an embedded manner, and a latching solenoid is used in the water supply section (4).

The sensing section (2) includes a light emitting element (2a) consisting of a light emitting diode.
) and a light-receiving element (2b) consisting of a phototransistor.It is a diffuse reflection type infrared sensor equipped with a light-receiving element (2b) consisting of a phototransistor, and is connected to a battery (5) as a driving power source via a control section (3) to be described later.

The light emitting element (2a) communicates with a light emitting drive circuit (3as) of a control unit (3), which will be described later, and emits infrared light according to the output from the circuit (3as), and this infrared light is used for use. Therefore, the urine 1 (Ia) hits the user standing in front of it and is diffusely reflected, and a part of this reflected light is received by the light receiving element (2b), thereby generating the light receiving amplifier circuit (3a, , ) described later.
Output to.

a, II The a section (3) can be roughly divided into a human body detection υ control section (3a) that communicates with the sensing section (2), and a latching solenoid (
4), and a water supply control section (3b) for controlling the human body detection control section (3a).In this embodiment, a case is shown in which the human body detection control section (3a) is configured only by hardware.

The structure of the human body detection control section (3a) will be explained according to FIG. 2. First, a pulse signal is continuously transmitted from the multivibrator (3a+) at a predetermined period, for example, at a period of 1 second.
This pulse signal is output to the 1/2 frequency divider (3a2) and the multiplexer (3a3).

The 1/2 frequency divider (3az) is the multi-by-break (
1/2 frequency of the pulse signal from 3a+) is 1! ?
Rumo (7)-c, J7JIIQ 2 t, [! I
Ichi 2 second interval 1111 Tehalus signal is transmitted continuously, and this pulse signal 8 with a period of 2t is also multi-break 1) (3a
z).

The multivibrator (3a3) receives a selection signal given from the OR circuit (3a+) and outputs a periodic pulse signal from the multivibrator (3a+), or
Alternatively, select whether to output a pulse signal with a frequency of +12t from the 1/2 frequency divider (3a2), and
The selected output from a3) is the light projection drive circuit (3as
), and this light emitting dry 1 circuit (3as >
Infrared light is emitted from the light emitting element (2a) based on the output from the light emitting element (2a).

That is, the period of infrared light emitted from the light emitting element (2a) is OR
Either t or 2L is selected by the selection signal from the circuit (3a4).

On the other hand, the light receiving amplifier circuit (
3ae) emits infrared rays from the light-emitting element (2a), and when no light is received by the light-receiving element (b), a one-shot pulse signal is output from the no-reflected-light one-shot circuit (3a7), and this pulse signal is is a flip-flop (38a)
and is input to clear the counter (3as).

When light is received by the light receiving element (2b), a one-shot pulse signal is output from the reflected light one-shot circuit (3a+o), and this pulse signal is transmitted to the flip 70 tube (38
a) and output to the count of the counter (3a9).

Normally, when the user is not in front of the urinal (1a), the multiplexer (3a3) first selects a period of 2t and emits light from the light emitting element (2a) at a period of ff12t. In order to output a pulse signal from 3ay) to clear the flip-flop (38a), the flip-flop (38a) outputs a high signal OW, and this low output is input to the OR circuit (3a4), which will be further described later. Since there is no output from the flip 71 tip (3a+3) to the water supply control unit (3b), the selection of the multi-break (3a3) remains at the period 2t.・Here, the light receiving element (2b) receives reflected light even once. When the user's presence is detected, a one-shot circuit with reflected light (
3a+o) to flip-flop (3aa) Sera I
-, the flip-flop (38a) outputs Hi to the OR circuit (3a<) to switch the multi-break rate (3a3) from the cycle 2t to the cycle t as shown in Figure 2, and from then on, the light is emitted. Light is emitted from the element (2a) at a period of t.

When the upper two counters (3as) do not detect a user, the pulse signal is clearly input from the one-shot circuit (3a7) with no reflected light, so the count number is O, but when a user is detected, the pulse signal is reflected. One-shot circuit with light (
Since a pulse signal is input to the counter from 3a+o), when counting starts and this state continues, a pulse signal is input to the counter from the one-shot circuit with reflected light (3a+o). The count number is output to the digital converters (3au), and when the user leaves in front of the urine 5 (Ia), a clear pulse signal is input from the no-reflection-light one-shot circuit (38a) to calculate the count number. Return to 0.

Digital comparator (3au) Compares the count input from the above counter (3a9) with the detection count setting value, e.g. 2, set in advance by the detection power/kundt setting circuit (3a+2), and detects the count. If the count is smaller than the set value 2, the flip-flop (3a
+3), but the flip 70 knob (38
It outputs 1-1 i to t3), and then simultaneously outputs LOW when the count becomes 0.

When the input from the digital comparator (3au) falls from If i to low, the flip-flop (3a+3) connects the AND circuit (3aI4) and the water supply control unit (3b).
11i is output to.

The AND circuit (38w) connects the other input terminal to the evening light projection drive circuit (3as), and
When outputting from n water supply control unit (3b), 1-
When 11 is output, it is output to shift 1~ of the shift register (3a+s).

The shift register (3a+s> is the light projection drive circuit (3
As), provide multiple Q outputs that change to Hi every time an output is output, and set the output count setting value according to the number of Q outputs.
In this embodiment, when the fourth Q output becomes Hi, the one-shot i~pulse circuit (3au,) outputs pulses F and Q.

This pulse signal is input to the shift register (3a+s) and flip-flop (3a+3) to clear both of them, and the water supply control unit (
The output to 3b) is switched from Hi to LOW, and the output to the OR circuit (3a4) is also made LOW. Therefore,
When the user uses the urinal (1a) and leaves the urinal Z (1a), a Hi output is input from the flip-flop (3a+3) to the water supply control unit (3b), and an output from the shift register (3a+s) is input. When the one-shot pulse circuit (3a+6) outputs a pulse signal, the output from the flip 70 tube (3a+3) changes to LOW.

At this time, there was no one to use the flip-flop (38g
), the output from the OR circuit (3an) disappears, and the multiplexer (3a3) is switched to a period of 2t, and from then on, the output from the light emitting element (2a) is 6Low.
t to emit light.

A diagram of the human body detection control section (3a) is shown in FIG.

Next, water supply 1. If the configuration of the II control section (3b) is explained according to FIG. 4, the input, that is, the flip-flop (3at3)
The output of l-1i from the open side AND circuit (3b+) and the NOT circuit't! 1 (3b2) to the closed side AND circuit (
3b3) and is input to the exclusive OR circuit (3b3).
b<) is also input.

The 1-alternative OR circuit (3b4) has a resistor R and a capacitor C interposed on one input side, so that when the output from the flip-flop (3a+3) switches from low to Hl and from Hi to l, o w Outputs a pulse signal when switching to .

Normally, when no user is detected, the input to the exclusive OR circuit (3b+) is Low;
b4 ) to pulse (Sth pulse) is not outputted, and the drive 1 to run disks (3b9) and the close drive transistor (31119) maintain the OFF state while the Sth pulse is not output.

Here, from the flip-flop (3a+3) to the water supply control section (
When the output to 3b) switches from LOW to Hi, the open side AN
l-1i is input to one input terminal of the D circuit (3b+), and NO is input to one input terminal of the closed side AND circuit (3b3).
LOW is input at the eaves of the T circuit (<3bz), and
A pulse signal is output from the exclusive OR circuit (3b4).

This pulse signal is input to a flip-flop (3bs), which outputs Hl, and is also input to another 7-lip-flop (31)s), where Q11 outputs l-1i.
k: The mouth output becomes LOW, and is also input to the 50 msec one-shot timer (3b7) to start its operation and set the mouth output to 1-1 i.

The output of the above flip-flop (3bs) and the output of the 50ms one-shot timer (3b7) are connected to an AND circuit (3b
s ), but since both are Hi, the circuit (
3bs) is 1 to the usage input terminal of the open side AND circuit (3b+) and the other input terminal of the m side AND circuit (3bz), respectively.
Roll 41.

Therefore, both input terminals of the open-side AND circuit (3b+) become If i, and output to the open drive transistor (3b9) to turn it on.

When the open drive transistor (3bs) turns on, the drive! A drive flJ current I is started to flow from a battery (5), which is an ilJ current, to an operating coil (4a) of a latching solenoid (4), which will be described later. ) and returns to the battery (5) via the resistor R.

The voltage generated in this time drive transistor (3b9) is detected by the voltage detection circuit (3b+o), and this detected voltage is transmitted to the peak detection circuit 't'6 (3bu), the margin correction circuit (3b+2), and the bottom detection circuit (3b+2). 3b+3) and the margin subtraction circuit (3bI4>).

Also, the output of the above flip-flop (3bs) is 1-1
When it becomes +, the peak detection circuit (3bu) starts operating, but since the mouth output is tow, the bottom detection circuit (3b
+3) remains in a stopped state.

On the other hand, as shown in FIG. 5, the time vs. current characteristics when the latching solenoid (4) is energized, which will be described later, are as follows:
The current is increased by applying current to the coil, and then after a predetermined time, the current decreases once due to the generation of back electromotive force as the plunger (4C) moves, but it is reversed by opening or closing the valve part (4d). Since the electromotive force becomes O, the current will continue to flow from then on, so the best estimate is the time required from when the current starts to flow until the current starts to rise again. It was also found that the time was within about 10 ka seconds.

The peak detection circuit (3bn) is designed to track the high voltage C, and detects the current maximum value due to the current applied to the operating coil (4a), and outputs the current maximum value to the peak detection ON comparator (3b+s>). .

The peak detection ON comparator (3b+s) uses the above current maximum value and a margin addition circuit (3b) that adds a predetermined margin to the current waveform when the latching solenoid (4) is energized.
+2> and the output obtained from the circuit (3b+z
When the output obtained from > exceeds the current maximum value and becomes small, at that point it is output to clear the flip-flop (3b6).

When the clear signal of the flip-flops (3b, , ) is input, the output becomes OW and the peak detection circuit (3b11
) is stopped, the output becomes 1-11, and the bottom detection circuit (3b+3) starts operating.

Since the bottom detection circuit (3b+3) only tracks low voltage, when the valve part (4d) is opened, it detects the current minimum value with 0 striking back electromotive force, and turns the current minimum value to bottom detection ON II]
Output 1 is sent to the Tl amplifier lake (31), 6).

The bottom detection ON comparator (3b+6) is obtained from the margin reduction circuit (3b+4) which reduces the cylinder by a predetermined margin from the above current (41 small (1t1) latching solenoid (4) energized lif flow waveform/p + When the output obtained from the circuit (3b+4> exceeds the current minimum (lol) and becomes larger, the output is output to clear the flip-flop (3t) 5).

When the clear signal of the flip-flop (3bs) is input, the output becomes low and LOW is output from the A N +) circuit (3bB) to the open side AND circuit (3b+), so the intermediate operation transistor (3bq) is in the OFF state. The drive current from the battery (5) to the operating coil (4i1) is stopped.

In addition, when the opening drive transistor 1 to transistor (3b9) is ON, the margin addition circuit (3b9) is turned on due to some abnormality.
If the output 1!1 from b+2) does not exceed the maximum current value and does not become smaller, or the margin decreases to 0 circuit (3b++)
There may be cases in which the output 1q from
Since there is no input to clear the signal (bs), the intermittent drive transistor (3b9) remains on and the current flow from the battery (5) to the operating coil (4a) is not stopped and the current is turned off.

However, if such an abnormal condition were to occur, the 5077L second one-shot 1-tine (3b7) would time up and no output would occur 50m seconds after the human power to the water supply control unit (3b) reached 1-1r. OW and AND circuit (3t
Since the output from +a) switches from 1-11 to low, the 1-transistor for driving (3b9) turns OFF, stopping the power supply from the battery (5) to the operating coil (4a).
In history, the output is 111, so the NAND circuit (3b+7
) and set the output from LOW to the inoperable lamp (3b+a)
When it lights up, it notifies the user of an abnormal condition.

Then, the one-shot pulse circuit (3a, 6) J: rebulse signal is generated by the output from the shift register (3a+s>), and this pulse signal causes the flip-flop (3a
+3) to the water supply control unit (3b) from 111 to l
When switched to OW, LOW is input to one input terminal of the open side AND circuit (3b+), and the open side AND circuit (3b3
) is connected to one input terminal via the NOV circuit (3bz).
When i is input manually, to the north, 1-transitive disjunction circuit (3b+)
From there, a pulse signal is output to a flip-flop (3bs) (3b6) and a 50 msec timer (3b7).

Therefore, both input terminals of the ND circuit (3b3) to the close side become It i, and output to the closing drive transistor (3b+q) to turn it on.

121 When the driving transistor (3b+q>) becomes O'N, the latching solenoid (
Drive to the return coil (4b) of 4)! Avoid starting energizing Fl + lightning current I.

After that, the above-mentioned intermediate operation transistor (3b9)
Similarly, the peak detection circuit (3bu) connects the return coil (4bu).
The maximum current fffi obtained by applying current to b) is connected to the peak detection ON comparator (3b+
s), and when the margin addition output horn exceeds the maximum current value and becomes smaller, the flip-flop (3b6) is activated.
Clear the valve part (
Compare the minimum current value obtained when the valve is opened in 4d) and the margin reduction 0 output obtained from the margin reduction circuit (3b+4>) using the volume detection ON rampator (3b+6).
When the margin subtraction output exceeds the current minimum value and becomes large, at that point the flip-flop (3bs) is cleared and the closing drive transistor 1 to transistor (3b19) is set to the 01: state, and the battery (5 ) to the return coil (4b) is stopped.

The time delay 1 of the water supply control unit (3b) to refuse is shown in FIG.

The latching solenoid (4) opens and closes the valve part (4d) by moving the plunger (4C) up and down by energizing the operating coil (4a) and return coil (old) as shown in Figures 7 and 8. Since this is a conventionally well-known structure, the one that can be shown is a pilot hole (4
The valve part (4d) is opened and closed to open and close the diaphragm (4d).
Pressure "Z (4 fl) formed behind the diaphragm (4 fl) The main valve (41) is opened and closed to supply flush water to the urinal (1a).

The dynamic coil (4a) and the return coil (4b) are gold Ji1.
The metal head (4k) is inserted into the inside of these two files (4a) and (4b), and the head (4k) is stacked vertically inside the case (4J) of X''A. At the same time, fix the upper part of the head (4h) to the case (4h).
A plunger (4C) is installed below k).

The plunger (4C) is disposed within the return coil (4b) so as to be movable up and down, and the plunger (4C) is placed on the top of the return coil (4b).
) is loaded with a spring (41) that always presses the valve in the 1t"ill+valve direction), the plunger (4C
) is provided with a permanent magnet (4 m) in contact with the lower surface of the case (4j).

Therefore, to explain the operation of the latching solenoid (4), when a user is not detected, the plunger (4C) is pressed downward by the spring (4) to open the pilot hole (4r). At this time, the magnetic flux of the permanent magnet (4m) moves in the direction of attracting the plunger (4C), and the pylobes 1 to 4[) are connected to the plunger t-
(4C) is held in a closed state by the lower surface of the main valve <4C.
e) keeps the valve closed.

If current is applied to the operating coil (4a) in this state, a magnetic flux that tries to attract the plunger (4C) upward will occur, and this magnetic flux will gradually become stronger, for example, the operating coil (4a).
) within about 101 rL seconds after the start of energization, the plunger (4C) begins to move upward and a back electromotive force is generated, and the closed piping [1] to hole (4f) opens and the valve part (
4d) is an interval valve, and the above-mentioned back electromotive force becomes O. Valve part (4d
) opens, the pressure chamber (4r) opens from the pilot hole (4r).
The water in (]) is discharged to the secondary side, and daicephram (40
) is 5↑ from the seat (4h) to 11, and then press the main valve (
41) opens.

The plunger (4C) further compresses the spring (4J) until the upper surface of the plunger (4C) comes into contact with the lower surface of the head (4k), and the back electromotive force becomes zero.

At this time, the magnetic flux of the permanent magnet (4m) is the 1-5b magnet (4m).
) from the outside of the case <4j), the head (4k), and the plunger (4C) to form a circulation 11 path returning to the inside of the permanent 1[i (4m), and the plunger p (/IC)
), the valve remains in the open state shown in Figure 8.

In addition, in order to change the valve from the closed state to the closed state again, when the return coil (4b) is passed through, a magnetic flux is generated in the opposite direction to the circulation path of the magnetic flux of the permanent magnet (4m), and this magnetic flux gradually becomes stronger and, for example, within about 10 milliseconds after starting to energize the return valve (4b), the plunger begins to move down the door (4c) due to the elastic force of the spring (4), and a counter electromotive force is generated. 'll: At the same time, the lower surface of the plunge V (4C) closes the pilot 1-7L (4f), the valve portion (4d) closes, and the back force becomes O. When the valve part (4d) opens, water on the next side flows into the force chamber (4g) through the small hole (4n) drilled on the outer circumferential side of the die X7 flamm (4e), and the water supply pressure increases to J. :When the lower surface of the rediaphragm (40) seats on the valve seat (411), the main valve (4I) opens and enters the state shown in FIG. 7.

In the sixth embodiment of this embodiment, water is supplied to the urinal (1a) after the bacteria used stand in front of the urinal (1a) for a predetermined period of time, and water is continued until the user leaves and the predetermined period of time has elapsed. Although urine B (Ia) was continuously washed, the following examples are not limited to this:
When a user stands at 119 of the urinal (1a), water is supplied to the urinal (1a) after a predetermined time period for pre-cleaning, and after the user enters the urinal (1a), water is supplied for a predetermined time for post-cleaning. Also good.

In addition, when the human body detection control section (3a) described above does not detect a user, it emits infrared rays at a period of 2 seconds, for example, and when it detects a user, it emits infrared rays to the water supply control section (3b). 1
1, that is, when the radging solenoid (4) is opened, the infrared rays are emitted periodically, for example, at a frequency of 1111 seconds per second. () is set to t, 1 second, and 199 laps when no other user is detected and when the latching solenoid (4) is open! f
It is good to set fJ to 2[, 2 seconds.

Furthermore, since the one shown in FIG. 9 is different from the other embodiments, this one is constructed by using a microcomputer (3a2o) as a part of the human body detection control section (3a).

The micro combi coater (3a?o) is conventionally well-known, and has an input port (3a2+), a CPU (3a22)
).

AM at 1 (3a23), ROM <3a24)
, a timer (3ax) and an output port (3a28), and the ROM (3a24) has CPIJ, (3a22>
A program is written to control the CPU (3
az2)t Input port (3a) according to Mako's program
c) Import external data from RAM (3a
23) and the timer (3a25), performs arithmetic processing, and outputs the processed data as necessary to the output port (3a2[i), and further to the water supply control unit (3b). Set the output to l-1i or low.

The output port (3ax) starts measurement by outputting a pulse signal to the light projection drive circuit (3as) connected outside the microcomputer (3a2o) according to the signal given from the CPU (3a22), and this measurement end signal is input. When inputted to the port (3a2+), a pulse signal is continuously transmitted to the light projection drive circuit (3as) again at a period of 2 or t to cause the light projection collector (2a) to emit infrared rays.

Mizuko (2b) receives light based on the light emitted from this light emitted by Marubo (2a)
A reflected light presence/absence determination circuit (3a+7) detects whether or not light is received by the light receiving amplifier circuit (38a), and this detection data is taken into the input port (3a2+).

In addition, the human horn port (3a2+) uses the signal given from the CPU (3a22) to connect the microphone 1 to the computer (3a2).
? o) Detection count setting circuit connected externally (3a+2
) The preset detection count setting value is taken in from the output count setting circuit (3a+g).

A flowchart of the program stored in the ROM (3a24) is shown in Figures 10(a) and 10(b).
), and the flow of the block diagram will be explained according to this.

When the program starts, the microcomputer 1 starts the timer (3aδ) at +1112t for light emission (step ■), and the detection count setting circuit (3a+2).
), enter the detection count setting value, for example 2, and set the DSI
E Flu's RAM (step 3a23> to store), DCNT Banike's [<AM
Set the contents of (3az) to O and step ■), input the output count setting value (e.g. 4) from the output count setting circuit (3a+a) and store it in the RAM (3a23) at address 08ET.Step ■), output output ``Set the contents of the RAM (3a23) in the 0CNTffi location where the 1st to 1st shifts are input to O, and then set the output to the water supply control unit (3b) to O.
Output LOW as FF (Step ■), store the output state OFF in the RAM (3a23) at address G to OF+- (Step ■), and turn off the start of measurement to the light projection drive circuit (3as) (Step ■) The initial state ends.

Next, check the timer (3a75) (step ■)
, determines whether the timer (3a25) has passed 2tlff (step [phase]), and when 2tlff has passed, the measurement star I output is turned on and the light projection drive circuit (3a5)
output a pulse signal to (step ■).

Check the measurement end input (Step @), judge whether there is an input (Step ■), turn off the measurement start output if there is an input (Step ■), and input the output from the reflected light self-illumination judgment circuit (3a17>). Step ■)
, determine whether there is reflected light (step ■).

When the user is detected and there is reflected light, the timer (3a
25) Change the light emitting period from 2t to t (Step ■)
, add 1 to the detection count at the DCNT address (step ■), check the output status of the 0FLAG address (step ■), and determine whether or not it is being output (step).

In this case, the output remains OFF in the above step (2), so the answer is No, and it is determined whether the detection count of the CN T address (step 0 to check direct) is determined (step (2)).

In this case, since the detection power run h fil is 1 in the above step ■, the result is No, and the step of Progera l\ returns to ■ again and repeats ■ ~ 0 ゛ (each time it passes through step ■, the detection count value becomes 1 Increased by increments.

On the other hand, when the user leaves and the reflected light disappears, the NO clause f1 is established in step ■, leading to step @.

Here, the detection count value of the DCNT address and the detection count setting value of the DSET address are read and compared.

When it is determined that the detection count value is not larger (step [phase]) than the detection count setting value 2, set the detection power run 1-Hani at the DCNT address to 0 and step ■), and the program step returns to ■. ■Proceed to ~, but the detection count value became O in the above step, so enter YES in step ■.
When the condition S is met, the process advances to step [phase], and the timer (3
The light projection period of a25) is changed from t to 21, and the subsequent steps of the program return to (2) again.

On the other hand, when it is determined that the detected count value is greater than the detected count set value 2 in step [phase], the water supply control unit (3b)
Turn the output from OFF to ON, switch it from LOW to 1-(i (step @), and transfer the output to the RAM at address 0FLAG (3a
23) to memorize the output status ON, step ■), and then D
Set the detection count value of CNT address to O and step [phase]
), subsequent program steps return to σ■.

In this case, we proceed to steps ■ to ■, but even if there is no reflected light, we proceed to steps [phase] -〇-■, and even if there is reflected light, we proceed to steps ■-■ in the end. Proceed to step ■-.

In this state, since the output was turned ON in step ■ above, the condition of YES is established in step ■, and the process proceeds to step ■ lυ
Add 1 to the OCNCN hinge force count value and set it to 0CNT.
Address output count value and O8E T'? rI output range 1 - Read the setting value and compare the two (step ■
).

When it is determined that the output count value is less than the output count l - set value 4 (step 0), return to step ① again and repeat steps ≫ to ①, and each time the output count value passes through step ②, the output count value increases to 1.
Increased by increments.

Besides, output callan h I+fi is output callan 1-1
When the role value is greater than or equal to 4, the ordinance of YES exists in Sfutsubu■, and the process proceeds to step [phase].

At this point, turn on the output to the water supply system fi 11 part (3b).
l: Change to F and switch from If i to Low (step @), store the output state ill OF F in the RAM (3a23) at address 0FLAG (step [phase]), Oc
If you want to set the N-hinge hinge force count value to 0, step @) By the way, return to step 0 again and check the detection count value of DCNTW land to determine whether it is 0 (step 0), but if the use name is detected If it is determined that the detection power run] is not O, return to step ■ again with the light emitting period of the timer (3a25) set at t. changes the light emitting period of the timer (3a25) from t to 2t (step [phase]), and then returns to step (2) again.

The time grade of the human body detection control unit (3a) to decline is set to 11th.
As shown in the figure.

In addition, in the front claw embodiment, the water washer (1) is the urinal (1a).
), but the case is not limited to this, and for example, the first
As shown in FIG. 2, the water washer (1) may be a pre-wash; k (lb).

In this case, the sensing part (2) is installed on the rear upper wall (A>) of the hand basin (1b), so when the sensing part (2) detects a user who approaches the hand basin (1b) to wash his hands, The water supply section (4) is energized to start supplying water from the water spouting device (1b+), and the water supply is stopped when the user leaves the handwashing device (1b).

That is, as shown in FIG.
The pulse circuit (3a+o) creates a Noritsubu flop (3a
+A> outputs an output of 111 from l-OW, and the flip-flop [J tube (3a13) outputs a LOW output from l-1i without reflected light by the pulse circuit (3a7). When the clip flop (3a+1) outputs from LOW to 111 or from 11 to LOW, the water supply control section (3b) operates in the same manner as on the water flow side.

In addition, from the flip-flop (3a13), the water supply section 011
When outputting 1"1 to part (3b), multi-break →
)(3a3) from period 2t to period t, low
When outputting , the cycle is switched from t to cycle 2t.

Furthermore, in the front claw embodiment, the sensing portion (2) is connected to the wall surface (A).
Although the sensing part (2) is installed in an embedded manner, the design of the sensing part (2) is not limited to that shown in the drawings and may be arbitrary.

<Effect of the invention> Since the present invention has the above configuration, it has the following advantages.

■ By emitting infrared rays intermittently from the light emitting element, there are intermittent non-emitting states that do not consume power, so sensing is much easier than conventional methods that emit infrared rays several thousand times per second. The number of times the infrared rays are emitted is smaller than that of a device equipped with an infrared light emitting section, and the power consumption can be reduced by that amount.In addition, an opening/closing signal synchronized with the above-mentioned light emitting period is outputted to the water supply section. Since the water supply section is operated as an I'll valve without using a timer, when the timer for closing the water supply section provided in the conventional control section times up, a one-blade valve signal is output to the water supply section to close the valve. Compared to this, there is no need to energize the timer for closing the water supply part, and power consumption can be reduced accordingly.

Therefore, the life of the battery is extended, and there is no need to frequently replace the battery, which not only provides the economic advantage of significantly reducing maintenance costs, but also greatly reduces the effort required to replace the battery.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional side view of a water supply unit 6n device showing an embodiment of the present invention, Fig. 2 is a block diagram of the human body detection control unit, Fig. 3 is a timing chart of the same, and Fig. 4 is a block diagram of the water supply control unit. , Fig. 5 is a graph showing the current force PI versus time when the latching solenoid is energized (0), Fig. 6 is a graph showing the time interval p-1 of the water supply control section, and Fig. 7 is an enlarged longitudinal sectional view of the water supply section showing the opening of the main valve. The valve state is shown in FIG. 8 (an enlarged vertical cross-sectional view of the water supply section shows the valve open state of the main valve, and FIGS. 9 to 11 show other embodiments of the present invention, and FIG. 9 shows the human body). Block diagram of detection control unit,
Figures 10(a) and 10(b) show the same flow yarn 1.
-1 Fig. 11 is the same time chart, Fig. 12 (partially cutaway front view showing the case where there is only one washing machine), and Fig. 13 is a block diagram of the same human body detection control section. 1... Water washer 2...2 sensing units...Light emitter 21)...Light receiving element 3...Control unit
4... Water supply part 5... Battery

Claims (1)

[Claims] A water washer, a sensing part that senses the use of the water washer, a control part that sends an opening/closing signal to the water supply part based on a sensing signal from the sensing part, and a water supply part that opens and closes a valve based on the opening/closing signal from the control part. In the water supply control device which uses a battery as a driving power source, the sensing section is constituted by an infrared sensor having a light emitting element and a light receiving element, and the infrared light emitted by the light emitting element is emitted intermittently at a predetermined period. The water supply control device is further characterized in that the control section outputs an opening/closing signal synchronized with the light projection period from the light projection element to the water supply section using the light projection period.