JPH0533584Y2 - - Google Patents

Description

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

(Prior Art) Conventionally, an optical sensor 51 as shown in the front view of FIG. 5 and the side sectional view of FIG. When the user leaves the urinal, the system detects this based on the change in the output of the optical sensor 51 and controls the solenoid valve interposed in the flush water pipe. A water supply control device is known that automatically supplies and stops flushing water to the toilet.

This optical sensor 51 includes an array of a light emitting diode 52 that emits infrared light, a light receiving diode 53 that receives light when the light is reflected on the user, and a detection lamp 54 that lights up to indicate when the user is detected. has been done.

(Problem to be solved by the invention) However, in the conventional example, the optical sensor 5
If an object enters or exits the detection range in step 1, flushing water is always supplied, so for example, if a cleaning staff tries to clean the inside of the toilet bowl, the cleaning water will be supplied every time the cleaning staff's body enters or exits the detection range. Water is supplied. For this reason, water is supplied while detergent is applied to the toilet bowl and it is being washed with a cleaning brush, and the detergent may be flushed away before sufficient cleaning has been performed. There was a problem in that tap water was wasted because the frequency of water supply increased in response to the amount of water.

Therefore, in the present invention, in order to solve the above-mentioned conventional problems, the remote control signal light is received by the remote control signal receiving element of the object detector from a separate portable transmitter. One window of the object detector is provided so that the control can be stopped or the stopped water supply control can be restarted, and the remote control signal light can be accurately projected to the object detector, The technical challenge is to arrange all of the light emitting and receiving elements of the object detector to face this window.

(Means for Solving the Problems) Technical means for solving the above problems include an object detector that detects when an object such as a person enters or exits within a predetermined range in front of the urinal and outputs an electrical signal; Based on the output of the object detector, there is a control device main body that performs water supply control such as flushing and stopping flushing water to the urinal, and a predetermined remote control signal light transmitted from a separate portable transmitter. The object detector of the water supply control device includes a water supply control stop and return means for stopping the water supply control of the cleaning water by the control device main body or restoring the stopped water supply control when light is received by the object detector. a light emitting element that emits a light beam in the direction of the object, a light receiving element that receives the light beam reflected by the object, and a remote control signal light receiving element that receives a predetermined remote control signal light transmitted from the transmitter. and the light emitting element, the light receiving element and the remote control signal receiving element are arranged facing one window.

(Function) According to the water supply control device having the above configuration, a transmitter is provided to a urinal cleaner, etc., and the remote control signal light is emitted from the transmitter toward the window of the object detector immediately before cleaning the urinal. , the signal light is received by the remote control signal light receiving element of the object detector.

When the remote control signal light is received by the remote control signal light-receiving element, an electric signal from the light-receiving element is output to the water supply control stop/return means. Outputs a signal to stop control.

When the urinal is cleaned while the water supply control is stopped, the transmitter emits the remote control signal light again after cleaning is completed, and when the remote control signal light is received by the remote control signal light receiving element, the electric signal output from the light receiving element is used to control the water supply. The signal is input to the control stop/return means, and the means outputs a signal for restoring the stopped water supply control to the main body of the control device.

Therefore, since the water supply control of flush water can be stopped when cleaning the urinal, it is possible to prevent detergent from being flushed away and from 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).
The beam is irradiated within a predetermined range in front of the

Constant voltage circuit 3 is a DC constant voltage (e.g. 4.5V)
This is a circuit that generates DC voltage (for example,
6V) is used as the 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. Also, this one-pulse delay circuit 9 turns off the detection display LED 2 while the output d is ON.
Turn on 2.

The output d of this one-pulse delay circuit 9 is input to the rising edge detection circuit 12, and further passed through the OR circuits 10 and 11 to the falling edge detection circuit 1.
6 and is input to the timer circuit 18.

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 generates the trigger pulse e at the time t2.
Output.

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. f
Output.

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.

Remote control (remote control) light receiving circuit 1
9 detects whether or not a predetermined signal M transmitted from a separate transmitter is included in the output S2 of the signal light receiving diode 23 for remote control (remote control), and detects whether the predetermined signal M is included. As shown in the timing chart of FIG. 4, when the signal M is being received, the timing pulse a is
A pulse signal n synchronized with is 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 outputted 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 electrical circuit section of the main body of the control device installed above the urinal, that is, the object detector 30.
On the front side of this object detector 30, facing one window 31, the infrared light emitting diode 4, the light receiving diode 7, the remote control signal light receiving diode 23,
Detection display LED 22 and stop display LED 21
are lined up. Moreover, an infrared light emitting diode 4,
The light-receiving diode 7 emits light in the direction of the user and receives an optical signal reflected from the user, so it is mounted so that its optical axis is tilted downward. On the other hand, the signal light receiving diode 23 for the remote control is connected to the window 3.
It is installed parallel to the surface of 1,
The light receiving diode 23 is an infrared light emitting diode 4.
and is attached between the light receiving diode 4 and the light receiving diode 7.

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.
(time t1).

In response to this pulse signal c, the output d turns ON after a predetermined time delay (time t2), and the detection display LED 22 lights up. In response to the rise of this output d, a trigger pulse e is output from the rising edge detection circuit 12, the timer of the pre-cleaning timer circuit 13 is activated, and the output g is
Turns on. In addition, the falling edge detection circuit 16
A clamp signal l is sent to.

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. After this, the output g becomes constant for a predetermined timer period.
Since it turns off when T1 has elapsed, the valve drive circuit 15 issues a pulse signal for closing the valve at this rising time and closes 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 user 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 turns OFF after the delay time (time t4) and is used for detection display.
LED22 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
T1 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. When the cleaning staff presses the button on this transmitter to emit signal light toward the window 31, the light is received by the light receiving diode 23 of the object detector 30, and the remote control light receiving circuit 19 detects this. Outputs 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 stop display LED 21 is turned on. Therefore, since no infrared pulsed light is generated, the object detection light receiving circuit 6
The output c remains OFF, and the water supply control of the cleaning water stops. 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, a signal light is generated again and is received by the remote control signal light receiving diode 23, which is detected by the remote control light receiving circuit 19. When the pulse signal n is outputted, the output o of the latch circuit 20 is inverted and turned ON. As a result, the oscillation circuit 2 starts oscillating, so that infrared pulsed light is generated again, and 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 described above, according to the invention, a cleaning staff is equipped with a portable transmitter, and when cleaning a urinal, a remote control signal is sent from the transmitter to the window that is the target of the object detector. By emitting light, it is possible to reliably stop the water supply control of cleaning water, so unlike conventional methods, an object detector detects a cleaning person and the cleaning water flows during cleaning, and the detergent flows during cleaning. This has the effect of reliably preventing wastage such as washing water being washed away or washing water being flushed many times.

[Brief explanation of drawings]

Fig. 1 is an electrical control block diagram of an embodiment of the present invention, Fig. 2A is a layout diagram of the light emitting/receiving element of the object detector, Fig. 2B is a side sectional view of the object detector, Figs. 4 is a timing chart explaining the operation of the electrical control block diagram of FIG. 1, FIG. 5 is a front view of a conventional object detector, and FIG. 6 is a side sectional view of the conventional object detector. 4... Infrared light emitting diode, 6... Object detection light receiving circuit, 7... Light receiving diode, 19... Remote control light receiving circuit, 23... Signal light receiving diode for remote control, 30... Object detector, 31... Window .

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An object detector that detects when an object such as a person enters or exits within a predetermined range in front of a urinal and outputs an electrical signal, and an object detector that outputs an electrical signal based on the output of the object detector. ,
When the object detector receives a predetermined remote control signal light emitted from a portable transmitter that is separate from a control device main body that performs water supply control such as outflow and stop of flush water to be flushed to the urinal, A light beam is directed in the direction of the object to the object detector of the water supply control device, which is equipped with a water supply control stop and return means for stopping the water supply control of the washing water by the control device main body, or restoring the stopped water supply control. A light emitting element that emits light, a light receiving element that receives the light beam reflected by the object, and a remote control signal light receiving element that receives a predetermined remote control signal light emitted from the transmitter, and the light emitting element A water supply control device characterized in that a light receiving element and a remote control signal light receiving element are arranged facing one window. (2) The water supply control device according to claim 1, wherein the remote control signal light-receiving element is disposed at a central position between the light-emitting element and the light-receiving element. (3) The utility model according to claim 1, characterized in that the remote control signal light receiving element is attached so that the light receiving surface of the remote control signal light receiving element is parallel to the surface of the window. Water supply control device.