JPH0513823Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a water supply control device for automatically flushing water when using a urinal.

(Prior art) Conventionally, as shown in Japanese Patent Application Laid-Open No. 160335/1983, an optical sensor is provided above the urinal, and this optical sensor allows the user to stand in front of the urinal and then use the urinal. When the user leaves the urinal, this is detected based on the change in the output of the optical sensor, and by controlling the solenoid valve interposed in the flush water pipe, flush water is automatically supplied into the urinal. A water supply control device that starts and stops water supply is known.

(Problem to be solved by the invention) However, in the conventional example, cleaning water is always supplied whenever an object enters or leaves the detection range of the optical sensor. In this case, cleaning water is supplied every time the cleaning staff enters or leaves the detection range.
For this reason, water is supplied while the toilet bowl is being cleaned with detergent after being applied with detergent, and the detergent may be flushed away before sufficient cleaning is performed. Furthermore, the frequency of water supply increases in response to the amount of movement of the cleaning staff, resulting in wasted tap water.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an object detector that detects when an object such as a person enters or leaves a predetermined range in front of a urinal and outputs an electrical signal. , in a water supply control device comprising a control device main body that performs water supply control such as outflow and stop of flushing water to the urinal based on the output of the object detector, the information is transmitted from a separate portable transmitter. The apparatus is provided with water supply control stop/return means for stopping the water supply control of the washing water or for restoring the stopped water supply control when a predetermined signal is received.

(Function) As mentioned above, the present invention transmits a predetermined signal using a separate portable transmitter.
Anyone can easily instruct the stop and return of wash water supply control.

Therefore, for example, if the cleaning staff is provided with the transmitter, the water supply control of the flushing water can be stopped when cleaning the toilet bowl, thereby preventing detergent from being flushed away or wasting tap water. .

(Embodiment) FIG. 1 is a block diagram of an electric circuit constituting a control device main body of a water supply control device according to an embodiment of the present invention.

As shown in the timing chart of FIG. 3, the timing pulse generation circuit 1 is a circuit that outputs a timing pulse a of a predetermined period (for example, about 0.5 seconds). This timing pulse a is input to the oscillation circuit 2 and is set at a predetermined frequency (for example, 40 kilohertz).
The signal is modulated into a modulated pulse signal b as shown in FIG. 3 and output. This modulated pulse signal b turns the transistor 5 ON and OFF, causing the infrared light emitting diode 4 to blink. The infrared pulsed light generated from this infrared light emitting diode 4 is transmitted to the toilet bowl (not shown).
is irradiated within a predetermined range in front of the The constant voltage circuit 3 is a circuit that generates a DC constant voltage (eg, 4.5V), and in this embodiment, the DC voltage (eg, 6V) supplied from a battery box (not shown) is used as a power source. Of course, this may be a circuit that generates a predetermined constant DC voltage using an AC power source that has been rectified under reduced pressure using an adapter. The constant voltage generated by the constant voltage circuit 3 serves as a power source for operating the electric circuit constituting the control device.

When the infrared pulsed light emitted from the infrared light emitting diode 4 is reflected by an object (such as a urinal) and this reflected light enters the light receiving diode 7, it is output from the oscillation circuit 2 as the output S1 of the light receiving diode 7. The same signal as the modulated pulse signal b appears.

The object detection light receiving circuit 6 removes the modulated wave component from the output S1 of the light receiving diode 7 and outputs a signal c containing only the timing pulse component. Volume 8 is for sensitivity adjustment.

The 1-pulse delay circuit 9 provides a 1-pulse delay circuit 9 for the rise and fall of the output signal c of the object detection light receiving circuit 6.
This is a delay circuit that reacts with a delay of the pulse amount, and its output (hereinafter referred to as object detection signal) d is generated one pulse after the output c of the object detection light receiving circuit 6 rises (as shown in FIG. 3). It turns ON at time t2), and thereafter the ON state is maintained because the signal c rises before the signal c falls. Then, it returns to OFF one pulse time after the pulse in signal c disappears. In addition, this one-pulse delay circuit 9 turns on the detection display LED while the output d is ON.
22 is turned on. The output d of this one-pulse delay circuit 9 is input to a rising edge detection circuit 12, and further inputted to a falling edge detection circuit 16 and a timer circuit 18 via OR circuits 10 and 11.

As shown in FIG. 3, the rising edge detection circuit 12 detects the rising edge of the output d of the one-pulse delay circuit 9, and outputs a trigger pulse e at time t2.

The falling edge detection circuit 16 is a circuit that detects the falling edge of the input signal and outputs the trigger pulse f. When the input signal is the output d, as shown in FIG. 3, the trigger pulse is output at the falling edge time t4. Output f.

The pre-cleaning timer circuit 13 turns on the output g for a predetermined time T1 in response to the trigger pulse e output from the rising edge detection circuit 12.

The post-cleaning timer circuit 17 is a circuit that turns on the output h for a predetermined time T2 in response to the trigger pulse f output from the falling edge detection circuit 16.

The valve drive circuit 15 is a circuit that outputs a short pulse signal j when the output i of the OR circuit 14 rises and falls. This short pulse signal j is a signal for opening and closing a solenoid valve (not shown) interposed in the cleaning water pipe, and as shown in FIG.
When the output i of the OR circuit 14 rises, it generates a pulse signal that instructs the valve to open, and when the output i falls, it generates a pulse signal that instructs the valve to close.

Pre-cleaning timer circuit 13 and post-cleaning timer circuit 1
7 outputs signals (hereinafter referred to as clamp signals) l and m for clamping the falling edge detection circuit 16 or the rising edge detection circuit 12 so that they do not operate during each timer operation.

The remote control light receiving circuit 19 detects whether or not the output S2 of the light receiving diode 23 contains a predetermined signal M transmitted from a separate transmitter, and when the predetermined signal M is included, the signal shown in FIG. As shown in the timing chart of , the pulse signal n synchronized with the timing pulse a only while the signal M is being received.
Output.

The transmitter (not shown) has a transmitting circuit built into a small portable case. This transmitter generates high-frequency modulated infrared pulsed light of a predetermined width when the wearer presses a button. When the pulsed light generated from this transmitter enters the light receiving diode 23, a light receiving signal M appears at the output S2 of the light receiving diode 23, as shown in FIG.

The latch circuit 20 is a circuit that inverts the output ON/OFF state in response to the rise of the pulse signal n when the remote control light receiving circuit 19 outputs the pulse signal n. This output o is a signal for switching between operation and stop of the oscillation circuit 2. When the output o is ON, the oscillation circuit 2 operates, and when the output o is OFF, the oscillation circuit 2 stops oscillating. Also, the output o
When it is OFF, the stop display LED 21 lights up.

An output p which is an inversion of the output o is simultaneously output from the latch circuit 20 and inputted to the falling edge detection circuit 16 via the OR circuit 10. Furthermore, even if a plurality of pulses are successively inputted from the remote control light receiving circuit 19, the outputs o and p of the latch circuit 20 respond only to the first pulse.

The timer circuit 18 resets a predetermined timer in response to the output d of the one-pulse delay circuit 9 inputted via the OR circuit 11 and the pulse signal n outputted from the remote control light receiving circuit 19. When there is no pulse signal input again, a signal k for driving the post-cleaning timer circuit 17 is output, and a signal q for inverting the latch circuit outputs o and p is sent to the latch circuit 20.

FIG. 2 shows the electric circuit section 30 of the control device body installed above the urinal. On the front side of this electric circuit section 30, an infrared light emitting diode 4, light receiving diodes 7 and 23, a detection display LED 22, and Stop display LEDs 21 are arranged.

The operation of the water supply control device of this embodiment configured as described above will be described below.

First, when there is no person using the toilet within a predetermined range in front of the urinal, the infrared pulsed light generated from the infrared diode 4 is diffusely reflected by the walls inside the toilet, and the amount of light that enters the light receiving diode 7 is small. No signal appears at output S1. Therefore, the solenoid valve is closed and no wash water is supplied.

When the user enters a predetermined range in front of the urinal in this state, the infrared pulsed light is reflected by the user's body and enters the light receiving diode 7. Since the incident amount at this time is large, the object detection light receiving circuit 6 receives the pulse signal c.
is output (time t1).

In response to this pulse signal c, after a predetermined time delay (time t2), the output d is turned ON and the detection display LED 22 lights up. In response to the rise of this output d, the rising edge detection circuit 12
Trigger pulse e is output from , the timer of pre-cleaning timer circuit 13 is activated, and its output g
turns on. Also, falling edge detection circuit 1
6, a clamp signal l is sent.

The output g of the pre-cleaning timer circuit 13 is inputted to the valve drive circuit 15 via the OR circuit 14, and when the output g rises, a pulse signal for opening the valve is generated to open the solenoid valve. This causes flushing water to flow into the urinal. Thereafter, the output g is turned OFF when the predetermined timer time T1 has elapsed, so at this rising time, the valve drive circuit 15 issues a pulse signal for closing the valve to close the solenoid valve. As a result, the supply of cleaning water is stopped and cleaning is completed. This is called a pre-cleaning operation.

Next, when the urinal leaves, the amount of pulsed light incident on the light receiving diode 7 decreases, so no timing pulse appears at the output c of the object detection light receiving circuit 6 (time t3), and the output of the 1-pulse delay circuit 9 d
is turned off after the delay time (time t4), and the detection display LED 22 turns off.

In response to the rise of this output d, the falling edge detection circuit 16 outputs a trigger pulse f, so the post-cleaning timer circuit 17 is activated and the output h is turned on for a predetermined timer time T2. Also, a clamp signal m is sent to the rising edge detection circuit 12.

When the output h rises, the valve drive circuit 15 issues a valve opening pulse signal to open the solenoid valve, and
When the output h rises, a valve closing pulse signal is generated to close the solenoid valve.

Therefore, the predetermined time T2 after the user leaves
During this time, flush water flows to clean the inside of the urinal. This cleaning operation is called post-cleaning. Note that it is free to decide whether or not to perform the pre-cleaning operation. Also, cleaning time T
1 and T2 can be set in various ways using a setting device (not shown).

Next, when the cleaning staff cleans, the cleaning staff is given the transmitter. The cleaning staff then presses the button on this transmitter and sends the signal light to the light receiving diode 2.
3, this signal light enters the light receiving diode 23, and the remote control light receiving circuit 19 detects it and outputs a pulse signal n. As a result, the output o of the latch circuit 20 is turned OFF, the oscillation operation of the oscillation circuit 2 is stopped, and the output o of the latch circuit 20 is turned off.
LED21 lights up. Therefore, since the infrared pulsed light is no longer generated, the output c of the object detection light receiving circuit 6 remains OFF, and the cleaning water supply control is stopped. Therefore, even if the cleaning staff moves around in front of the urinal, the cleaning water is not supplied, which eliminates any interference with the cleaning work.

Next, when the cleaner presses the button on the transmitter again after finishing the cleaning work, signal light is generated again and enters the light receiving diode 23. When the remote control light receiving circuit 19 detects this and outputs a pulse signal n, the output o of the latch circuit 20 is inverted and turned ON. As a result, the oscillation circuit 2 starts oscillating, and the infrared pulsed light is generated again.
The cleaning water supply control operation is restored.

In addition, since the output p of the latch circuit 20 is input to the falling edge detection circuit 16, the output p will be OFF when the water supply control operation is restored.
In response to the fall of the output p, the falling edge detection circuit 16 outputs a falling pulse f. As a result, the post-washing operation is performed, and the remaining detergent and the like are washed away by the post-washing operation.

Furthermore, by providing the timer circuit 18,
If the water supply control operation is not restored even after a certain period of time has passed after stopping the water supply control operation, that is, if the outputs o and p of the latch circuit 20 are not reversed, a reversal command signal q is sent to the latch circuit 20 to output the output. o,
p is reversed and the water supply control operation is restored. This is an effective operation when the cleaning staff leaves the water supply control operation stopped and forgets to instruct it to return.

In the above embodiment, infrared light is used to detect the person using the toilet and send and receive signals to stop and restore water supply control. It goes without saying that ultrasonic waves, radio waves, etc. can also be used.

Further, the signals for commanding the stop and return of the water supply control operation may be the same signal M as in the embodiment described above, or may be different signals (for example, different code signals).

(Effects of the invention) As explained in detail above, by transmitting a predetermined signal using a separate portable transmitter, anyone can easily instruct the stop and return of the wash water supply control. .

Therefore, for example, if the cleaning staff is provided with the transmitter, the supply control of the washing water can be stopped when cleaning the toilet bowl, thereby preventing detergent from being flushed away and tap water from being wasted.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an electric circuit constituting the control device main body of a water supply control device according to an embodiment of the present invention, Fig. 2 is a front view of the electric circuit section housing the electric circuit, and Figs. The figure is a time chart showing the output of each part of the electric circuit. 4... Infrared light emitting diode, 6... Object detection light receiving circuit, 15... Valve drive circuit, 17... Post cleaning timer circuit, 19... Remote control light receiving circuit, 20
...Latch circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] An object detector that detects when an object such as a person enters or leaves a predetermined range in front of a urinal and outputs an electrical signal; In a water supply control device that includes a control device main body that performs water supply control such as outflow and stop of washing water to flow into the water supply system, when a predetermined signal transmitted from a separate portable transmitter is received, A water supply control device comprising a water supply control stop/return means for stopping water supply control or restoring stopped water supply control.