JPH02150582A - Unnecessary operation preventive device for flowing-water valve operation sensor - Google Patents

Abstract

PURPOSE: To dispense with an unnecessary water flushing action in a power source restoring time after a power cut by feeding an infrared ray signal via a first infrared ray filter and operating a water flushing valve in compliance with the infrared ray signal received via a second infrared ray filter. CONSTITUTION: In an automatic water flushing device for a hygiene excretion device (a urinal), an infrared ray 10a radiated from an infrared ray feeding device 10 via a filter 8a is reflected only when a user is positioned in front of the filter 8a and received by a light receiving device 12 via a filter 8b so as to be fed to an amplifier 17. An infrared ray transmitter 14 connected to the amplifier 17 via a strobe line 18 amplifies signals and feeds them to a delay circuit 19 when the signals are inputted together, and after a delay of the predetermined time, the signals are fed to a protection circuit 24 for a power cut time and a single operation circuit 26. If respective conditions are attained, an output circuit 28 feeds current to a flushing valve coil 6 so as to open a flushing valve for cleaning the urinal. In this way, an unnecessary water flushing action is not carried out when a power source is restored after a power cut, so that water saving effect can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for preventing unnecessary operation of a water valve actuation sensor.

In particular, the present invention prevents the water flow valve from operating when there is a power outage or power outage, and the new telegram prevents the activation sensor from enabling the water flow valve when the power is restored after a power outage. Regarding things.

[Prior Art] Conventionally, when there is a power outage or power outage to a sensor-operated water valve, the water valve circuit becomes operational, and when the power is restored, all the water valves in the flush equipment start operating. However, if the flow water supply is not sufficient to stop the flush operation, the flush valve will continue to operate after power is restored. To the applicant's knowledge, other prior art U.S. Pat.
No. 8.204 and No. 4.309.781.

Infrared sensing systems have also been used in conjunction with the flush valve actuation mechanism, as disclosed in U.S. Pat. No. 4,309,781. Such infrared sensing systems have used a single red filter through which infrared light is both transmitted and reflected to the control module.

Additionally, the device of US Pat. No. 4,309,781 uses, in addition to the red filter, a separate lens system consisting of spaced apart convex lenses. Here 1
One lens is placed in front of the light source, and the other lens is placed in front of the light source.
placed in front of the sensor.

These lenses are arranged so that only the source light reflected from the object is focused on the photo sensor. Note that the axis of each lens is preferably 5° from the vertical.
It is tilted. The tilt of the lenses in this lens system prevents ambient light and infrared pulses from walls and/or doors from being focused onto the photo sensor.

Note that the filter only performs a normal function and does not work to collect light energy in cooperation with the lens group, and the lens group having an inclination in particular performs an essential function for focusing light.

Additionally, some prior art infrared sensing systems do not have an adjustment function, making it impossible to adjust the direction of the beam as well as the sensitivity of the receiver, leading to the possibility that the beam may see unnecessary or incorrect objects. There is.

Heat buildup occurs when one lens looks at the other lens, ie, when the lens that receives the reflected light looks at the lens that transmits the energy. Also, the sensor may in some cases keep the flush valve in an active mode, which may result in a burnout of the circuit. It also results in overheating of the lens when one lens is used for transmitting and receiving light.

Note that even if one filter is used together with a lens, there is no change in operation and the result is also the same.

[Problems to be Solved by the Invention] As described above, in the conventional technology, there is a problem in that unnecessary water running is performed when the power is cut off or when the power is restored after a power outage, and therefore excess water is wasted. Furthermore, since a single filter or lens group was used, there was a risk of overheating and burnout. The present invention attempts to solve these problems.

[Means for Solving the Problems] In order to overcome the above-mentioned difficulties, the present invention provides a system for each toilet that is always open, which is opened when the power is restored or supplied after a power outage. It is proposed to provide a protection circuit.

It is also proposed to provide a preset timer that inputs and activates the protection circuit. That is, the protection circuit is changed from the open state to the closed state, and the water flow device is put into operation.

Furthermore, the preset timer has an adjustment function,
It is proposed to be able to set different predetermined time intervals for each toilet to prevent all circuits from operating at the same time when the power is restored.

Note that the delay circuit may include a resistance-capacitance circuit and a voltage comparison circuit.

Further, it is also possible to set a preferable time and reset the sensor circuit by manual operation by an operator who is on standby.

Additionally, two separate filters may be provided for transmitting infrared energy and receiving reflected infrared energy.

The wavelength of the infrared energy used in this case is preferably 880 nm.

As a more specific example, the present invention provides five different methods and associated devices for preselected control of when a flush valve is enabled.

As mentioned above, the present invention particularly relates to a sensor comprising means or circuitry for preventing unnecessary operation of the flush valve in the event of a loss of current or power to the sensor or associated circuitry and subsequent restoration of power. It concerns a working flush valve. A power supply reset circuit is used along with the sensor.

The reset circuit uses a resistive-capacitive network and a voltage threshold comparator, which are used to inhibit the flush valve from operating for a short period of time when current is first applied to the sensor. causing a time delay. In this way, the infrared sensor cannot operate the flush valve until the user moves toward the valve, causing the infrared sensor to activate and enable the flush valve to operate.

The protection circuit is preferably a normally open device or switch that allows the operator to remove all controls to enable the urinal or toilet by closing the switch when power is restored. It can be performed.

A reset button for manual operation may be provided when manual priority control is required.

In addition, for certain washing equipment, reset/reset to each washing equipment.
Partial control of the flushing equipment is also possible by providing a button. That is, by applying power and pressing the reset button, the protection circuit is closed or activated, providing power to the sensor-activated flush valve. If power to the building is cut off, the protection circuit will automatically open.

One protection circuit can be used for each toilet or flush fixture, and it is also possible to use l protection circuits for several toilets or flush fixtures.

In addition, in the case of automatic operation, a protection circuit with an adjustable timer can be used for each toilet, in which case a preselected flush recovery circuit for each toilet can be used. You can set the time.

On the other hand, as mentioned above, the present invention also promises improvements in the use of infrared sensing systems to operate flush valves. To this end, the invention proposes to provide one filter for transmitting infrared radiation energy and another filter for receiving reflected infrared energy.

These two separate filters are especially useful in environments where there is no water or anywhere to dissipate heat.

Also, by using two filters, one filter does not see the other, so the filters are not kept in an operational mode and do not burn themselves out.

It should be noted that a filler differs from a lens in that it does not have a focal point like a lens. Therefore, even when a lens system is used with two filters, one lens does not see the other lens, so the filter does not remain in the operating mode, and there is no risk of burnout.

The use of separate filters also has the advantage that if the filter is scratched or damaged due to vandalism, only the filter needs to be repaired and the rest of the circuitry does not need to be repaired. Also, if the circuit is manually operable as described above, the operator can remotely activate the flush valve if the infrared system becomes inoperable for some reason. Note that each filter can be replaced separately.

In this way, the proposal to use two filters instead of the conventional one filter is because
This is because if an object is placed in front of the lens, the filter will see itself. If two filters are used, one filter will not see the other filter. When a lens is used and the lens is viewed on its own, it causes heat build-up and is kept in an operating mode. This causes the lens to burn itself, especially in environments where there is no place for the heat to dissipate.

As a result of using two filters instead of one, lens burnout does not occur if the lens is also used for focusing.

Furthermore, the invention also proposes the use of a range adjustment device.

The range adjustment device is used because some toilet partitions are shorter than others, which could cause the infrared sensor to see the door and activate the flush system. This is an unnecessary operation. If the infrared sensor detects the door and activates the flushing device, a situation may arise in which the flushing device does not operate when the user wants to flush water. According to the present invention, it is possible to adjust the operating range of the infrared sensor. Moreover, it can be adjusted on the spot, and there is no need for prior adjustment at the factory. Therefore, the maximum amount of reflected light or energy can be adjusted on the fly.

Adjusting the sensitivity of the receiver rather than the direction of the beam in this way is similar to adjusting the shutter speed in a camera to maximize the amount of light reflected.

Note that a wall plate can be used to protect the filter from damage. If one filter gets scratched, you only need to replace that one filter. The combination of wallboards and filters also helps combat vandalism.

[Example 1] Figures 1 and 2 show an ordinary sanitary ejector, for example, a urinal l connected to a sensor 2 which is an infrared radiation sensor circuit system according to the present invention. The urinal l is attached to the wall 3 with an outlet 4 for discharging waste water into a normal sewer pipe (not shown). The flush valve 5 is connected to a system 2, shown as a circuit group, and a flow control solenoid 6, shown generally as a controller for the flush valve 5. The water supply port 7 to the urinal 1 is also shown as a normal one. The infrared energy delivery and detection filter, generally designated as infrared sensor 8, is comprised of a first filter 8a and a second filter 8b. Each filter is fixed and supported on a wall 3 and is shown visible from the outside, but it can also be hidden from view by a suitable decoration system. first filter 8
a and the second filter 8b should preferably be supported parallel or without tilt. This is because if the filter is tilted, the direction of the light rays will change. However, the system requires that each filter be maintained parallel to each other so that the transmitted and received light rays pass through the filter in a substantially normal direction, but within normal operating tolerances, It has sufficient sensitivity to allow for slight deviations.

Line 9 generally indicates the transmission and reception path of infrared energy between the sensor circuit 2 and the first filter 8a and the second filter 8b.

a line 9a between each filter 8a, 8b and the sensor circuit 2;
9b indicates the preferred direction of the transmitting and receiving paths. That is, the line 9a represents the sending path of the infrared rays that pass through the filter 8a from the sensor circuit 2, and the line 9b represents the receiving path of the infrared rays that are sent out from the sensor circuit 2 via the filter 8a, are reflected, and pass through the filter 8b. It shows the route. These will be discussed further later.

For the purposes of the invention, it is proposed to use separate filters 8a and 8b as described above. By using two filters in this way, the relationship between the two is as follows: filter 8
The infrared rays sent out through the filter 8b are reflected at a predetermined position, and the reflected infrared rays are received by the sensor circuit 2 via the filter 8b. Note that a filter having characteristics at 880 nm is used as the specific filter.

Next, the water running mechanism shown in FIG. 2 is hidden behind a wall and cannot be seen from the outside, as shown in FIG. 1. In fact, it is possible to completely separate the operation control mechanism from the outside, and although it is preferable for various purposes to hide the water valve and separate it from the outside, it is not particularly necessary for operation.

However, the sensor is preferably not visible from the outside in order to protect it from vandalism and/or tampering.

The flushing valve 5 is actuated by the sensor circuit 2, and when the solenoid 6 is energized, flushing water is introduced into the flushing water supply lower, thereby flushing the urinal l. For this purpose, the infrared sensor 8 first steadily sends an infrared signal forward from the direction of the urinal l via the filter 8a. Then, when the person stands in front of the urinal l for a preselected predetermined time, the filter 8
The infrared rays sent out through a are reflected in the direction of the wall on which the urinal l is fixed, enter a filter 8b, and are transmitted along a line 9b to the sensor circuit 2 which activates the flush valve as described below. be done. Then, when the person leaves, the solenoid 6 operates the water valve 5 to flush the urinal l with water.

Although this embodiment shows a case in which it is connected to a urinal, it can be similarly applied to a toilet, and the positions of people and doors can also be changed.

Next, the present invention provides two filters 8a and 8b as described above.
It is proposed to use two filters. In the prior art, the constituent elements corresponding to the filters 8a and 8b are two lenses, and it has been proposed to add a filter to these. According to the teachings of the present invention, if the components corresponding to filters 8a and 8b are lenses, two filters are added as components, one for lens 8a and the other for lens 8b. used for purposes. The filter used in component 8a allows the transmission of infrared energy in only one direction, ie in the direction of the person (I) indicated by the dashed line in FIG. On the other hand, the filter used in the component 8b allows transmission of only the infrared radiant energy that is reflected or returned after hitting the person (I) out of the infrared rays sent out through the filter 8a, and is received by the sensor circuit 2. The infrared transmitting device of the sensor circuit 2 transmits infrared light through the filter 8a, and the infrared receiving device receives the returned signal through the filter 8b. Then, when the returned signal disappears, the solenoid 6 becomes conductive and operates the water flow valve. The infrared transmitting device allows a sufficient amount of infrared light to be reflected as described below.

When this system is used for a toilet, the door of the stall is an essential component, and the door is positioned so that the sensor is activated when the person comes to the optimal position for the sensor to activate. It should be in a position that does not have any influence on the sensor, and should not be in a position where a person would be optimally located for sensor operation. Although the position of the object or person (I) is not shown in FIG. 3, adjustment of the range of optimal positions is possible in the factory or in situ, as will be explained in connection with FIG. That is, the range adjustment circuits 38 and 39 shown in FIG. 5 can be used in the sensor circuit.

In Fig. 2, a water valve 5 and a solenoid 6 that actuate the water valve are shown together with a normal urinal 1. These flow water into the urinal l from the water supply lower, and drain water from the outlet 4 into the drain. discharge to. Flowing water valve 5
and solenoid 6 are connected to the lower water supply and outlet 4 for safety.
It is also preferable to hide it behind the wall 3.

FIG. 2 shows the case where the sensor circuit 2 is placed behind the wall 3 and behind the filters 8a and 8b.

Note that the filter is preferably made of an infrared color material of 880 nm, which is ideal for transmitting infrared light.

FIG. 3 shows an infrared transmitting device 10 and an infrared receiving device 12.
A sensor circuit 2 including a sensor circuit 2 is shown. In Figure 2, line 9
Although a and 9b have shown general examples of paths connecting the infrared transmitting device 10 and the infrared receiving device 12, respectively, FIG. 3 shows a more detailed view of the paths.

Here, the infrared transmitting device 10 is coupled to a transmitter 14, which transmits the infrared transmitting device IO through the aperture 15.
and generates a frequency of infrared radiation to be transmitted via filter 8a. The emitted infrared light is shown as ray 10a. When a person or other object is located in front of the filter 8a, the infrared rays emitted are reflected and directed toward the infrared receiver 12, and then passed through the filter 8b and the opening 6 to the infrared receiver. 12 and further sent from the infrared light receiving device 12 to the amplifier 17.

Here, apertures 15 and 16 are shown with ray 10a transmitted through filter 8a, but ray 1
0a does not pass through the filter 8b, and of course part of the wall 8c
It also doesn't pass through. Similarly, the reflected light L2b does not pass through the filter 8a, but the light ray 12 that hits the filter 8b and is reflected.
b passes through the filter 8b and is received by the infrared receiver 12. Of course, the light beam that hits the wall 12c and is reflected is not received by the infrared receiver 12.

The oscillator 14 is connected to the amplifier 17 via a strobe line 18 and supplies the amplifier 17 with a synchronized input signal. If amplifier 17 simultaneously receives a signal from infrared receiver 12, the received signal is amplified and sent via line 20 to delay circuit 19. The delay circuit 19 has a predetermined delay time for preventing output.

Power supply circuit 21 is shown as a low voltage power supply, ie AC 24, which is also used in prior art devices, and supplies power to the entire unit via lines 22,23.

Although 24V is used here, AC 11V is preferably used.
Normal supply voltages such as 0V can also be used, and local power supplies can also be used. This is because there is no danger regardless of the type of power source used, as all electrical connections and units are isolated from people and no one can touch the electrical unit.

The output from delay circuit 19 is connected to protection circuit 2 via line 25.
4 and via line 27 to the single-actuation circuit 26, respectively. The output circuit 28 is provided to de-energize the flush valve coil or solenoid 6 that operates the flush valve 5 . The solenoid 6 is connected to the output circuit 28
and power supply circuit 21 are respectively energized when forming a circuit through the solenoid 6 via lines 29,34. For this purpose, both the protection circuit 24 and the -turn operation circuit 26 must operate, and by their cooperation, the output circuit 28
The power supply circuit 21 constitutes a circuit passing through the solenoid 6. In this sensor circuit, the protection circuit 24
and the connection of the protection circuit 24 with other circuits, 1
using two filters instead of one filter;
This device is similar to the conventional device disclosed in US Pat. No. 4,309,781, except that it can use a local power source.

The ability to use a local power supply and the use of two filters instead of one bidirectional lens and one filter were mentioned above.

The protection circuit 24 is supplied with power from the power supply circuit 21 via line 22.23. Also, the output from the output circuit 28 is on line 2.
9 or line 30, and when the output is applied to line 30, the solenoid 6 is placed in a disabled state. Protection circuit 24 has two inputs, one from delay circuit 19 and the other from output circuit 28 via line 30. The delay circuit 19 controls the protection circuit 24 so that the flushing operation does not occur continuously, but provides a time delay that can accommodate the instantaneous operation of the amplifier 17.

FIG. 4 shows a specific example of a circuit used as the protection circuit 24. Here, the diode 70 having the plate 71 is connected to the positive potential V+ via the capacitor 32. The capacitor 32 and the resistor 33 constitute an RC circuit. One end of the resistor 33 is connected to ground 72 or an appropriate reference potential, and the other end is connected to the diode 70 and the resistor 33-.
It is connected to the coupling part of the capacitor 32.

The protection circuit 24 is configured such that the infrared receiving device 12 is an infrared transmitting device @
The operation of the water flow valve 5 is controlled by controlling whether or not the solenoid 6 is energized as a result of receiving the infrared light beam sent from the solenoid 10 . For example, when a voltage V0 is applied to the protection circuit 24 through the R-C network 1, current flows through the diode 70, but current in the reverse direction from the output circuit 28 to the protection circuit 24 via line 30 is blocked. Ru. Voltage V
When + is removed due to a power outage or intentionally, current no longer flows through line 30 in the forward direction of diode 70, nor in the reverse direction. Therefore, there is no current flowing in line 29, 34 and solenoid 6, ie, there is not enough current to operate solenoid 6 and the flush valve will not operate. The protection circuit 24 then performs control by determining whether a circuit passing through the solenoid 6 via a line 29 from the output circuit 28 and a line 34 from the power supply circuit 21 activates the solenoid 6. That is, when the protection circuit 24 blocks the current from the power supply circuit 21 that attempts to operate the solenoid 6, no water flowing operation occurs.

By selectively restoring the voltage V+, it is possible to selectively operate the water flushing device for each flushing facility and/or each urinal of each flushing facility to enable flushing. In some situations, all or some of the flush valves may be activated when power is restored after a power outage, resulting in a lack of flush water supply. If all flush valves are activated at the same time, there will not be enough water flowing through each flush valve to shut it off after the flush cycle is complete.

The protection circuit 24 prevents this and controls the time and sequence, in particular the time and operation of each water valve returning to its operational state.

Note that the resistor 33 is suitably 100Ω, and the capacitor 32 is suitably 1μF. Further, for the voltage (+), 24 V DC or a normal local AC voltage power source can be used.

FIG. 5 shows another preferred embodiment of a sensor circuit connected to a water flow valve, which performs control to prevent unnecessary operation when the sensor circuit is cut off. The infrared emitting device 10, which is embodied as a light emitting diode, is an ultra-high power emitting device that generates infrared pulses.E, D pulse output device 3
5 is connected.

The infrared receiving device 12°, which is implemented as a photo diode, is used to receive the infrared pulses transmitted from the infrared transmitting device 12' and reflected by the human body. A low power high gain preamplifier 36 receives and receives pulses or signals from the infrared receiver 12' and together with a high gain synchronous amplifier 37 amplifies the received signals. The synchronization range adjustment circuit 38 includes a range adjustment device 39 for adjusting the number of signals or pulses returned to the diode 12° so that flushing occurs only when a predetermined time has elapsed. Signal averaging/amplification circuit 4
1 obtains an AC output from the synchronization range adjustment circuit 38, converts it to DC with a predetermined amplitude, and sends it to a high-precision level detector 42.
Activate. The high precision level detector 42 has a limit
It is connected to a timer 43 and controls the length of time for flushing the urinal or toilet bowl. Output driver 44 is connected to solenoid 6 to control and operate solenoid 6. The range adjuster 39 allows the necessary time for the infrared radiation to be reflected before the solenoid 6 is actuated.

It should be noted that the range adjustment device 39 is generally shown here as a configuration consisting of a resistor 73 and an adjustment selection device 74, and can be adjusted on the spot and does not need to be set in advance at the factory.

The range adjustment device 39 also determines the distance at which the infrared ray 10'a is transmitted from the infrared transmitting device 10' via the filter 8°a, and the distance at which the infrared ray 12°b is received via the filter 8°b. A preselected range of the area reflected to the device 12'' is selected. In practice, a predetermined area of a predetermined size is predetermined for activating the sensor circuit.

By using the range adjustment device 39, it is possible to adapt to toilet bowls and urinals of different sizes.

That is, a predetermined distance from the urinal or a distance within a predetermined range, and a height from the floor and a distance from the ceiling can be selected. This means that, just as a camera has a certain focal range, an infrared receiver has a certain tolerance. Light from unfocused areas around the urinal or toilet bowl will not activate the flush valve and the desired amount of reflected infrared light returned can be selected. It is also possible to change the size of the urinal cubicle, and when the light beam is reflected by an object or person outside the preset range from the urinal or toilet, the flushing operation of the flush valve will be interrupted. It won't happen.

Furthermore, when the infrared sensor is connected to the toilet bowl, there is a possibility that the sensor will see the door of the private room, and it is not desirable for the flushing device to operate in this case, but of course it is possible that the sensor is located within a pre-selected range by someone. The flush valve does not operate except when the flush valve is activated. In this way, the method of adjusting the sensitivity of the infrared receiver rather than the direction of the light beam or the amount of light emitted is similar to adjusting the shutter of a camera. In this case, the range adjustment device 39 can be adjusted in such a way that it is possible to select the ideal point or range in which the infrared radiation is received or reflected.

The limit timer 41 is used to determine the length of the flushing operation time and the rest time of the flushing operation. This is a water saving device and can prevent excess water wastage.

The sensor circuit is powered by a normal power supply, e.g.
It is operated by a power supply circuit 45 such as 20■, but the direct current 2
4V or other power supplies can also be used. Power supply circuit 45
A power line synchronization detection device 46 is connected to supply power to circuits that operate the infrared sensor and related circuits.

In the present invention, a power reset circuit 47 that can be operated manually or automatically is added to the above-mentioned circuit. When performing manual operation, according to the circuit and individual connections,
The operator can decide which urinal or group of urinals or flush fixtures to be enabled. The power supply manual reset circuit 47 can control the output driver 44, and the output driver 44 can control the infrared light receiving device 12.
When the power input reset circuit 47 is activated, it becomes conductive and activates the solenoid 6. Therefore, the output driver 44 can be considered as an AND circuit that requires control by two people.

6 and 7 show a general schematic of a simplified control circuit and an infrared sensor circuit for operating a water valve operated by a solenoid 6. FIG. The adjustable timer 48 is connected to a normal 120V AC power supply circuit 45. The timer 48 is a latch mechanism 49 that includes a solenoid 50.
can be adjusted to be activated or controlled periodically, controlling the flow rate as well as the recycle time of the flush valve. FIG. 6 shows the circuit in a non-operating state or a non-flowing state, in which a connecting portion 51 consisting of a contact 54 connected to the latch mechanism 49 is connected to a contact 55 connected to the sensor circuit 2.
It has been cut off.

FIG. 7 shows the circuit in an operating state, with contact 54 and contact 55.
is connected to the sensor to enable water flow operation in response to the sensor's operation.

8 and 9 show the protection circuit 52 and reset switch 53 connected to the sensor circuit 2 and solenoid valve 6.

The protection circuit 52 includes a contact pair 51 and a reset switch 53.
Contains. The reset switch 53 may be accessible or not accessible to the public. By moving the reset switch 53, the ninth
Contacts 54,55 can be connected as shown. Since each sensor circuit 2 of each washing equipment can be activated by the reset switch 53 after the power is restored in the event of a power outage, at least one or two different controls are possible. The first control is from a central control room as in FIGS. 6 and 7, and the second control is an in-situ reset switch 53.

10 and 11 show other embodiments of the reset circuit for operating the sensor circuit 2. In FIG. Control switch 56 includes a pushbutton 57 to allow short-term connection. Push button 57 is used to connect control switch 56.

FIG. 12 shows a more specific example, showing part of a prior art circuit and one of the preferred models for implementing the invention. In particular, FIG. 1 shows a prior art flushing arrangement for an electrically controlled toilet bowl of U.S. Pat. ing. For a complete disclosure, see the aforementioned Hopkins US Pat. No. 3.908.204.

In order to effect a preselected control of the water supply valve 60, shown as a general coil that enables or disables the supply of running water, the invention proposes a control consisting of adding a variable capacitor 11 to said circuit. .

The variable capacitor 11 has a resistor 6 in order to connect it to the triacross 2.
Connected to the 4.68 joint. Electronic timer 40 activates signal T to open water valve 60 for a preselected length of time.
1 is sent to the triachrom 2 and when it becomes conductive, the triachrom 2 is insulated. The variable capacitor 11 has one plate, the negative plate of which is connected to the triacross 2 via the resistor 64, and the positive terminal connected to the DC 24V power supply 13. The variable capacitor 11 is used to supply 24 V DC in opposition to the signal from the timer 40, and can make the triacross 2 respond or not respond to the electronic timer 40. Although this circuit shows an example using a DC 24V power source, other suitable power sources can be used by appropriately changing the values of the circuit components.

Various adjustments may be made when applying to different circuits and embodiments. For example, toilet partitions can have different designs, from short to long. In order to prevent the sensor from seeing the door, the height of the obstruction, the range of distance from the floor, and the distance from the sensor are changed.

The sensor circuit can also be tuned to see different spectra of light. This adjustment removes unnecessary and unfocused light from the infrared light. Note that the detection device or light receiving device should be adjusted according to the surrounding light conditions.

The switch and power supply are not connected to the urinal and are isolated from the person using the urinal or toilet, so the power supply is
Either a 4V or 110V unit may be used. In addition, a safety switch can be used to prevent grounding to the user in case something happens.

Note that the power supply reset circuit is a resistance-capacitance network and is not an integrated circuit.

If the present invention is not used in a prior art circuit,
If the circuit were interrupted or there was a lightning strike, each flush valve would flush at the same time, and not enough water would flow to close the flush valves. Even if there are only 20 valves, not enough water will flow to close the valves. Some prior art valves close at 35 times per minute.
Requires gallons of water. It also becomes a problem when the pipe is damaged. This is because each water flow valve attempts to perform a water flow operation.

When power is applied to the sensor, the sensor is “°°OFF”
mode. If the light goes out momentarily, not a single water valve will operate and the sensor will always remain in °'OFF' mode unless someone stands in front of it. There is a delay, which prevents the power from being turned on for the first time.

The automatic protection circuit is always open and can be manually connected to provide power to each toilet.

A protection circuit may be used for each toilet, or a protection circuit may be provided at the breaker panel.

Although preferred embodiments have been discussed, various changes and modifications can be made without departing from the scope of the invention.

[Effects of the Invention] As described above, the present invention does not perform an unnecessary water running operation when the power is restored after a power outage or power outage, so excess water is not wasted and there is a water saving effect. Also, in a preferred embodiment of the present invention, two filters are used in the sensor, so
There is no risk of overheating or burnout, which increases safety.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment in which the present invention is applied to a sanitary discharge device, FIG. 2 is a central sectional view of FIG. 1, and FIG. 4 is a wiring diagram showing an example of the protection circuit of the circuit group shown in FIG. 3; FIG. 5 is a block diagram showing another embodiment of the sensor circuit; FIG. Figures 6 and 7 are configuration diagrams showing an example of a timer control circuit that performs priority control over solenoid valves. Figure 6 is a diagram showing an unlatched state, Figure 7 is a diagram showing a latched state, and Figure 8 is a diagram showing a latched state. 9 and 9 are block diagrams showing other embodiments of the present invention including a protection circuit, FIGS. 10 and 11 are block diagrams showing other embodiments of a circuit that controls a reset operation after a power outage, FIG. 12 is a partial wiring diagram showing a conventional circuit modified according to the present invention. ■... Urinal, 2... Sensor circuit, 5... Water valve, 6... Solenoid, 8... Infrared sensor, 8
a, 8b filter, 10.10'... infrared transmitting device, 11... variable capacitance, 12.12°... infrared receiving device, 14... infrared transmitter, l 7-... amplifier,
l 9--delay circuit, 21.45--power supply circuit, 2
4...Protective circuit, 26...4-time activation circuit, 28...
Output circuit, 32-...capacitance, 33-...resistance, 35-...
・Pulse output device, 36...Low human power high gain preamplifier, 37...High gain synchronous amplifier, 38...Synchronization range adjustment circuit, 39-...Range adjustment device, 41...Signal averaging・Amplification circuit, 42...High precision level detector, 43-
...Limit timer, 44...Output driver, 47
--Power source manual reset circuit, 48...Timer, 49
... Latch mechanism, 51 ... Connection part, 53 ... Reset switch, 54.55 - ... Contact, 56 ... Control switch, 57 ... Push button, 64 ... Triac, 70 ...Diode Ftg, 12

Claims (13)

[Claims] (1) In an automatic flushing device consisting of a flushing valve for washing a sanitary discharger with running water and a flushing valve operating device, the flushing valve operating device has a first infrared ray to prevent the flushing device from being in a constant operating mode and burning out. a filter (8a) and a second infrared filter (8b); transmission (10, 10') of an infrared signal (10a) through the first infrared filter (8a) and reflected light (12b) of the infrared signal (10a); ) is a circuit for receiving light (12, 12') through a second infrared filter (8b) of the water valve () in response to reflection of an infrared signal received through the second infrared filter (8b) 5
) for operating the infrared sensor operating circuit (10, 10',
12, 12') and; An unnecessary operation prevention device for a water valve operation sensor. (2) A device including an automatic protection circuit (38, 39, 73, 74) that controls the water valve actuation device by determining in advance the time when the water valve actuation device operates and the water flow valve becomes ready for water flow operation. 2. The apparatus according to claim 1, further comprising an external control device that energizes the infrared sensor operating circuit after power is cut off by human intervention. (3) The infrared sensor operating circuit includes a resistance-capacitance circuit (32, 33) that prevents the infrared sensor operating circuit from reactivating after a power outage or power outage, and the water valve and the infrared sensor operating circuit are electrically disconnected. 2. The device of claim 1, wherein the device is responsively rendered inoperable. (4) Includes an external control (39) that includes priority control that gives priority to control that predetermines the time during which the infrared sensor activation circuit can operate the water valve after a power outage, so that the water valve operates normally when the power is restored after a power outage. Apparatus according to claim 1, characterized in that it includes means (24, 47) for resetting the closed state of the flush valve in response to the power being restored. (5) The apparatus according to claim 1, further comprising priority control (47, 53) that gives priority to control that predetermines the time during which the infrared sensor actuator operates and the water valve becomes operable after the power is cut off. . 6. The apparatus according to claim 1, further comprising: (6) a preset timer (48) for each toilet; and preset timer adjustment means for controlling the elapse of time after the water valve activation power is turned on. (7) A claim comprising a delay circuit and a voltage comparison circuit for delaying the reset of the flush valve operation, and wherein the voltage comparator circuit operates the flush valve after the delay circuit reaches a predetermined preset voltage. 1. The device according to 1. 8. The apparatus of claim 1, further comprising a range adjustment device (39) for adjusting the distance over which the reflected signal is effective for activation of the infrared sensor activation circuit. (9) The automatic flushing device is connected to a toilet having one or more urinals or toilets, so that each urinal or toilet functions as a sanitary discharger, and each sanitary flusher has a flushing valve and a flushing toilet. Device according to claim 1, characterized in that it includes a reset (53) for actuating the valve. (10) The automatic flushing device is used in at least two or more flushing facilities having at least one or more urinals or toilets, and the flushing valve connected to each urinal and toilet is electrically operated, and 2. The apparatus of claim 1, further comprising a delay circuit for generating a delay time to prevent simultaneous actuation of the flush valves. (11) The automatic flushing device is used in two or more toilets, and each toilet has a protection circuit that is always open; and selective control when the flush valve in each toilet becomes operable in response to an infrared sensor. 2. Device according to claim 1, characterized in that it comprises at least one sanitary discharger having an external control device with means for closing the protection circuit for carrying out the operation. (12) The external control device includes a normally open protection circuit for each toilet, said protection circuit for selectively controlling when the flush valve in each toilet is enabled in response to an infrared sensor. 2. The device of claim 1, further comprising: means for closing. (13) a floor area in which the infrared sensor activation circuit is responsive to reflected infrared signals received through a second infrared filter, providing a first range from the sanitary evacuator and a second range from the floor; and a spacing device from the sanitary discharger.