JPH07243230A - Control circuit for plurality of automatic devices - Google Patents

Abstract

PURPOSE:To reduce the number of parts for a control circuit in the case of the parallel installation of a plurality of automatic devices such as water supply control devices and water soap automatic supply devices, prevent an increase in power supply capacity due to the concurrent operation of pumps particularly for delivering water soap, and reduce overall installation space and cost. CONSTITUTION:A toilet system is equipped with a plurality of automatic devices 3a and 3b having automatic faucets 1a and 1b, and water soap automatic supply devices 2a and 2b automatically controlled for operation and stoppage, upon receipt of a signal from hand detecting sensors 5a, 5b, 7a and 7b for detecting the hands of a person washing his/her face. Operation start signals from the sensors 5a, 5b, 7a and 7b are inputted in parallel to a control circuit 12 formed out of a single CPU 13. In this case, the circuit 12 is made to perform control operation not to cause at least a plurality of pumps 8a and 8b to concurrently operate. When temperature detected with a temperature sensor 10 becomes low, each of the automatic devices 3a and 3b is made to perform the prescribed antifreezing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply control device such as an automatic hand-washing faucet or an automatic cleaning device for urinals and urinals by human body detection, and a toilet or washbasin equipped with a plurality of automatic water soap supplying devices. Control circuits used in facilities, etc.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, for example, in a washing facility in which two automatic devices 3a and 3b having automatic faucets 1a and 1b and automatic water soap supplying devices 2a and 2b are installed in parallel, In addition to the manual switches 4a and 4b used when storing water in the washbasin on the automatic faucets 1a and 1b side, hand detection sensors 5a and 5b constituting a detection unit, and a solenoid valve 6a constituting an actuator, 6b is installed. Also,
On the automatic water soap supply devices 2a, 2b side, hand detection sensors 7a, 7b constituting a detector and a pump 8 for discharging water soap are provided.
a and 8b are installed. The detectors and actuators are control units 9a and 9b including a CPU.
The normal operation control is performed by.

On the other hand, in order to prevent the water supply pipe and the water soap supply pipe from freezing, the control units 9a and 9b are provided with temperature sensors 10a and 10b.
When the ambient temperature measured by
The solenoid valves 6a and 6b and the pumps 8a and 8b are controlled to operate for a short time. The power required to drive these devices and sensors is supplied by the common power line 11.

[0004]

In such a conventional system, each of the automatic devices 3a and 3b has a detecting section,
Since the control unit and the actuator are provided and operate independently of the operation of the other automatic device, the operation timings of these automatic devices 3a and 3b are not regulated in a unified manner. Therefore, for example, a plurality of pumps 8a, 8
Even when b is operated at the same time, the assumed power supply capacity is required, and it is necessary to increase the capacity of the power supply unit. There is also a problem that the installation space becomes large and the cost also increases.

[0005]

A control circuit of a plurality of automatic devices according to claim 1 of the present invention is a water supply control in which a signal from a sensor for detecting a human body or a hand is automatically operated and stopped. A control circuit for controlling a plurality of automatic devices including the device and / or the automatic water soap supplying device is controlled by one CPU.

A control circuit of a plurality of automatic devices according to a second aspect of the present invention is provided with a water soap automatic supply device which automatically operates and stops upon receipt of a signal from a sensor for detecting a human body or a hand. A control circuit for controlling a plurality of automatic devices, wherein at least water soap supply start signals from sensors provided in the plurality of water soap automatic supply devices are input in parallel to the control circuit, and the control circuit sends out water soap. The pump is controlled so that two or more pumps do not operate at the same time.

A control circuit for a plurality of automatic devices according to a third aspect of the present invention is the control circuit for a plurality of automatic devices according to the first aspect, which is provided with a temperature sensor, and the temperature sensor may cause freezing. Is detected to control freezing prevention.

According to a fourth aspect of the present invention, a plurality of automatic device control circuits have a single temperature sensor in the plurality of automatic device control circuits.

[0009]

According to the control circuit of the plurality of automatic devices according to the first aspect of the invention, the CPU for controlling the plurality of water supply control devices and / or the automatic water soap supply device is one.
Since the number of parts can be reduced and the cost of the board can be suppressed, and linked control can be performed for each automatic device, for example, by controlling not to operate the pump of the automatic water soap supply device at the same time. It becomes possible to save power. Further, since it is not necessary to install each control unit for each automatic device and only one control unit is required, the number of construction steps can be reduced. According to the control circuit of the second aspect, in the case of normal control for a plurality of automatic water soap supply devices, the drive timing is controlled so that two or more water soap supply pumps are not operated at the same time. The capacity of the power supply unit can be reduced. Further, in the control circuit according to the third aspect of the present invention, the temperature sensor detects a state in which there is a risk of freezing, and one CPU controls the antifreezing. In particular, by using only one temperature sensor as described in claim 4, it is possible to further reduce the number of parts and the number of construction steps.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A control circuit for a plurality of automatic devices according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a control circuit of a plurality of automatic devices according to the present invention, and FIG. 2 is a timing chart exemplifying control timing of operation of a pump. This example shows the case of controlling two automatic devices 3a and 3b, and the elements of the sensors and actuators in these automatic devices 3a and 3b are the same as those of the conventional device shown in FIG.

That is, in addition to the manual switches 4a and 4b used for storing water in the washbasin, etc., the hand detection sensors 5a and 5b formed of infrared sensors are provided on the automatic faucets 1a and 1b sides of the automatic devices 3a and 3b. , A solenoid valve 6a for controlling water discharge,
6b are installed respectively. On the other hand, hand detection sensors 7a and 7b having the same structure as the hand detection sensors 5a and 5b are provided on the side of the automatic water soap supply devices 2a and 2b, and pumps 8a and 8b for discharging water soap are further provided. Then, the manual switches 4a, 4b and the hand detection sensors 5a, 5b, 7
The control circuit 12 outputs the drive start signal or drive stop signal for the solenoid valves 6a, 6b and the pumps 8a, 8b with the control signal detected from a, 7b as an input. Also,
Temperature sensor 10 which is a sensor for performing antifreeze control
Is attached to one automatic device 3a side in this example.

The control circuit 12 is an electric circuit mainly composed of one CPU 13 which is a one-chip microcomputer, and the internal structure thereof is an input interface 14 for receiving a plurality of input signals in parallel as outlined in the drawing.
And an output interface 15 that outputs signals for controlling the start and stop of driving the solenoid valves 6a, 6b and the pumps 8a, 8b. Here, the input interface 14 is composed of a transistor group that switches between “H” level and “L” level depending on the presence or absence of each input signal, and the output interface 15 is the CPU 1
It is configured by an amplifier group that amplifies and outputs the control signal output from 3.

Regarding the control method executed by the control circuit 12, the pumps 8a and 8b of the two automatic devices 3a and 3b are used.
The following will be described based on the timing chart shown in FIG. 2 in which each of the above is driven to control the discharge of water soap. When the user's hand is detected by the hand detection sensor 7a on the side of the automatic water soap supply device 2a in one automatic device 3a, the pump 8a of the automatic device 3a is input to the input interface 14.
The water soap supply start signal S ₁ for instructing the drive of the is sent.
At this time, in the control circuit 12, when the other user is not detected by the hand detection sensor 7b on the water soap automatic supply device 2b side of the other automatic device 3b, the pump 8a is kept for a predetermined time. The drive interface S ₃ for the pump 8 a, which is a continuous pulse that turns on for T ₁ and turns off T ₂ for a time longer than T ₁ , is output from the output interface 15. Here, for example, T ₁ is 10 ms,
T is a ₂ 20m seconds. Then, by changing T ₁ and T ₂ , the discharge amount of water soap can be changed appropriately.

By the way, when one of the automatic device 3a hand of a user by hand detection sensor 7a of the automatic liquid soap supply device 2a side detection to the water soap supply start signals S ₁ of is output, the other If the other user the signal S ₂ is detected in the hand detection sensor 7b of the automatic liquid soap device 2b side of the automatic device 3b is output, controls the pump 8a and a pump 8b simultaneously so as not to drive To do. Specifically, the drive signal S ₄ waveform for the pump 8b shown in FIG. 2 is output as a continuous pulse waveform similar to the drive signal S ₃ for the pump 8a, and this ON time T ₁ of the drive signal S ₃ is output. OF
It is output at a timing such that it is inserted in the F time, and S ₃ is output.
And S ₄ is prevented from ON simultaneously.

On the other hand, when there is a risk that the water supply pipe, the water soap supply pipe, etc. will freeze due to the temperature drop, the temperature sensor 1
When the preset temperature is detected by 0, the CPU 13
Through the output interface 15 each automatic device 3a,
Command 3b to perform anti-freezing control. The command is, for example, intermittent pulses or pulse pulses to create a fluid state by intermittently or continuously discharging a small amount of water or water soap to the solenoid valves 6a, 6b and pumps 8a, 8b at regular intervals. Outputs short pulses.

Further, the solenoid valves 6a, 6 on the side of the automatic faucets 1a, 1b of the automatic devices 3a, 3b output from the control circuit 12.
The signal for normally controlling b is a signal pulse for instructing a cleaning start time point and a signal pulse for instructing a cleaning end time point. The above is also applied when both the hand detection sensors 5a and 5b simultaneously detect the user's hand. Although a control method similar to the above can be used, the power supply capacity is not required to the extent required by the pumps 8a and 8b. Therefore, individual water discharge control may be performed for a predetermined time.

Incidentally, the automatic devices 3a, 3 of the above-mentioned embodiment
b is automatic faucet 1a, 1b and automatic water soap device 2a, 2b
Of course, the present invention is also applicable to those equipped with an automatic urinal cleaning device, an automatic urinal cleaning device and an automatic hot air generator. Further, it can be similarly applied to a case where three or more automatic devices are arranged in parallel, and the more the number of automatic devices, the more the power supply capacity can be reduced, which is more preferable. Further, the temperature sensor 10 may be provided for each of the automatic devices 3a and 3b as described above, but by using one as in this example, it is possible to reduce the number of parts and the number of construction steps. On the other hand, in the case where each automatic device 3a, 3b is provided, on the other hand, it is possible to perform anti-freezing control for each automatic device and particularly fine control is possible when the temperature is locally different. Become.

[0018]

As described above, according to the present invention, the number of parts required for the control circuit can be reduced, and the capacity of the power supply unit necessary for controlling the operation of a plurality of automatic devices can be reduced. can do. As a result, the installation space can be reduced and the cost can be reduced. Further, unlike the conventional case, it is not necessary to provide a control unit for each device, and only one control unit or one temperature sensor needs to be installed, so that the number of construction steps is reduced and the workability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control circuit of a plurality of automatic devices according to the present invention.

FIG. 2 is a timing chart exemplifying the timing for controlling the operation of the pump.

FIG. 3 is a block diagram showing a conventional example.

[Explanation of symbols]

 1a, 1b ... Automatic faucet 3a, 3b ... Automatic device 6a, 6b ... Solenoid valve 7a, 7b ... Hand detection sensor 8a, 8b ... Pump 10 ... Temperature sensor 12 ... Control circuit 13 ... CPU 14 ... Input interface 15 ... Output interface

Claims (4)

[Claims] 1. A control circuit for controlling a plurality of automatic devices including a water supply control device or / and a water soap automatic supply device which automatically operates and stops upon receiving a signal from a sensor for detecting a human body or a hand. A control circuit for a plurality of automatic devices, the control circuit being controlled by a CPU. 2. A control circuit for controlling a plurality of automatic devices equipped with a water soap automatic supply device that automatically operates and stops upon receiving a signal from a sensor for detecting a human body or a hand. At least water soap supply start signals from sensors provided in the plurality of automatic water soap supply devices are input in parallel to the control circuit, and the control circuit controls two or more pumps for sending water soap so that two or more pumps do not operate at the same time. Control circuits for multiple automatic devices. 3. The control circuit for a plurality of automatic devices according to claim 1, further comprising a temperature sensor, wherein the temperature sensor detects a state in which there is a possibility of freezing, and performs antifreezing control. Control circuits for multiple automated devices. 4. The control circuit for a plurality of automatic devices according to claim 3, wherein one temperature sensor is provided.