JPS59147178A - Electronical automatic cock - Google Patents

Abstract

PURPOSE:To prevent a start and a stop of supply water from frequently repeating, by providing a misoperation preventive circuit such that a sensing signal is not accepted in a control part unless it is continued for a prescribed time further disappearance of the sensing signal is not transmitted to the next after the disappearance of the signal unless this disappeaance condition is continued for a prescribed time. CONSTITUTION:A control part (b) is equipped with a misoperation preventive circuit b-1 such that a start signal is generated when a sensing signal is generated in a sensing part (a) and this generation condition continues for a selective time T1 further the generation of the start signal disappears when the sensing signal disappears and this disappearancecondition continues for a delay time T2. The sensing part (a) senses a man if he comes to stand before a washstand 1, feeding a signal to the control part (b), and the control part (b) drives a driving part (c), actuating a supply water part to open a vlave and start the supply of water. This supply of water is started after elapsed the selective time T1 after the sensing part (a) begins sensing hand or the like of a user, and stopped after elapsed the delay time T2 after the sensing disappears.

Description

[Detailed description of the invention]

The present invention relates to an automatic faucet that automatically controls the start and stop of water supply based on the detection of a human body by a sensing section. Conventionally, various structures have been known for this automatic faucet. For example, use is detected by manually blocking the optical path of a photoelectric transistor, and the optical path is blocked during the sensing. In the case of the one disclosed in Japanese Patent Publication No. 37-937, where the water supply continues while the optical path is being shut off, and the water supply stops when the optical path is removed, or after the optical path to the photoelectric transistor is interrupted and water is supplied, the water supply continues even after the interruption is removed. There is a device disclosed in Japanese Utility Model Publication No. 16196/1983, in which the light path is interrupted again to stop the water, and after the water has been stopped, the water stop is continued even if the interruption is removed. In all of these conventional systems, the valve in the water supply part opens and closes at the same time as the detection No. 19 occurs and disappears, and there is no intention to use the automatic faucet (even if the sensing part momentarily senses a human body, the water supply valve opens and closes immediately). If water starts flowing or the human body detection of the sensor unit momentarily disappears even though there is no intention to stop the water supply from the automatic faucet, malfunctions occur such as the water supply stopping and overturning. The technical problem lies in ignoring the instantaneous generation and extinction states of sensing signals.The present invention has been developed to achieve the above technical problem by providing a sensing unit that senses the human body. a control unit that generates an output based on the sensing signal; a drive unit that receives the output from the control unit; and a water supply unit that is operated by the drive unit and supplies water to the faucet; The control section generates a sensing signal and does not accept the sensing signal unless this generated state continues for a predetermined time interval, and the sensing signal disappears and the sensing signal is not accepted unless this disappeared state continues for a predetermined delay time. A malfunction prevention circuit is provided to prevent the disappearance from being transmitted to the next person.The sensing section senses the human body, sends a signal to the control section, and the control section drives the C drive section based on this signal to operate the water supply section. However, if the sensing state of the sensing section does not continue for a predetermined screening time, the sensing signal will be ignored, and if the state in which the sensing signal disappears does not continue for a predetermined delay time, the sensing signal will disappear. The instantaneous state of generation or disappearance of the sensing signal is ignored and the water supply is not started or stopped without being considered as the intention of the user. Since the present invention has the above configuration, the following is explained below. ■ When the automatic water faucet of the present invention is installed in a hand wash basin for hand washing, the C sensing section stops sensing when the user finishes washing his hands (after a predetermined selection time, the water supply stops). Since the machine stops, the dirt attached to the hand wash can be washed away and the hand wash can be kept clean, making it hygienic. ■ A sorting time and a delay time are provided to prevent the human body from leaving the sensing area while water is being supplied. Sensation may disappear (also,
This instantaneous disappearance of sensing and re-sensing will stop the water supply, and prevent the water supply from repeatedly starting and stopping frequently. It is possible to measure sex. An example of the implementation of the present invention will be described below with reference to the drawings. In this example, an automatic faucet is used for hand washing.
(1) in the figure is a water washer, here it is a hand wash basin, and it is installed on the building wall.
), and a water discharging device (3) of a water supply section (d), which will be described later, is provided on the rear upper edge surface of the cage. ), the main body part (5) has a valve part (4) therein which is opened and closed by the drive of The main body part (5) is provided with a driving part (C), and the water discharging tool (3) is provided with a sensing part (a), respectively. The part (3a) rises upward from the upper edge surface of the washbasin (1), and the spout part (3b) at the upper end faces the bowl part of the washbasin (1) from above. 3) has a cylindrical handle at the lower end of the body (3a).
The 15 mounting parts (3c) extend over one surface of the washbasin ('I) through which the shell of the washbasin (1) is inserted, and the outer circumferential surface thereof is threaded with a hole h<6). 6 Rir. Water spouting device (3) by tightening these parts 1 to (6).
is fixed to the washbasin (1). Then, the secondary water supply connection pipe (9) plug-connected to the outflow 11 (8) of the main body part (5) is inserted into the water spouting device (3) from the mounting portion (3C), and the water spouting device (3) is inserted into the water spouting device (3). -) is connected to a discharge water flow path (10) installed inside the pipe. The main body portion (5) has an inflow 1. ] (11) and outlet (8)
A valve body (13) consisting of a die A7 flamm having a valve seat (12) therebetween and correspondingly forming a valve part (4).
A water stop valve (15) and a strainer (1
Connect the outlet (8) to the water discharging device (3) via the primary side water supply connection pipe (17) and the nozzle control (30), and connect the outlet (8) to the water discharging device (3) via the secondary side water supply connection pipe (9). The main body part (5) and the drive part (C) integrally installed therein are housed in the case (7). (There is. In case (7), there is also a later system 'ra ill (
A control section (b) is electrically connected to the driving section (C) and the sensing section (a), and is also connected to the power source (18). In the case of this embodiment, the sensing section (a) includes a light emitter (19) and a light receiver (20), and infrared light from the light emitter (19) hits a human body, for example, a hand, and is diffusely reflected, and this reflected light is received. The so-called diffuse reflection type infrared photoelectric sensor (20) senses when the light is received. 3) is installed in the front part of the body (3a). That is, the sensing part <a) is fitted into the mounting hole (21) formed on the front surface of the body (3a) of the water discharging tool (3), and the cord (
22) from the drawer q part (3c) of the water spout (3) to the wash basin (
1)! ! 11111 and connect it to the control unit (1) with a connector, etc. The drive section (C) is composed of an electromagnetic element j, and includes a plunger p-(23) that moves forward and backward when the electromagnetic coil (not shown) is energized and turned off. Behind the valve body (13), a pressure chamber (28) is formed which is constantly in communication with the next side of the flow path through a small hole (27) bored in the peripheral edge of the valve body (13). , the pressure chamber (28) is connected to the secondary side of the flow path via the pipe L1 hole (29).
The plunge p-(23) is constantly biased by a spring (not shown) in the direction of closing the valve seat (12) at the valve body 13), and the plunge p-(
23> The pilot hole (29) is closed at the tip. Then, in this driving part (Ω), one lanshier (23) moves forward and backward by controlling the energization of the electromagnetic coil l\ by the control part (1)), and when it is pulled, the spring Press the valve body (13) with the force of the valve seat (12)
to close the valve part (4). Therefore, in this state, water is not supplied to the 11-1 water fixture (3). This valve closed state is maintained unless one lunger (23) is attracted by the electromagnetic coil. Also, if the electromagnetic coil is energized, the plunger (23)
The water is attracted by the electromagnetic coil against the (=J force) of the spring, and the sweat and water (28) are discharged from the pyro-reduction hole (29) to the secondary side of the flow path, and the valve body (13) is supplied with water. The valve part (4) opens when it is pushed from the valve piece 12) by water pressure, and the water supply part (d') supplies water via the water discharging device (3>).On the other hand, the control part (b) It controls the energization of the drive unit (C) in response to the sensing signal from the sensing unit (a).
After a predetermined sorting time T+ (for example, several m5ec, ~o, bsec, ) after the sensing part (a) starts sensing, the sensing part (a) starts sensing.
) continues while sensing the human body °C drive unit (C)
After the sensing is completed, the predetermined delay commercial quantity 1”z(
For example, after 0.5 SeG, ~2 sec,) the drive unit <C
)/\ is configured to stop energizing. Further, the control unit (b) prohibits continuous water spouting when the energization time to the drive unit (C), that is, the Kanosui moe period is set to be slightly longer than the time required for energized hand-washing or washing.
min, -4min, ), and the control unit (b ), as shown in FIG. The signal disappears, and this disappearing state continues for a delay time T. When the malfunction prevention circuit 1 (b-1) disappears, the occurrence of startup No. 13 disappears, and the occurrence state of the startup signal continues for a prohibition time T3. A timer circuit (b-2) that generates a time-up signal only when the
), an output generation prevention circuit (b-3) that generates an output generation prevention signal based on the time) knob signal, and an output that drives the drive unit (C) when only the start signal is generated. However, when the activation signal disappears or when the output seizure prevention signal is generated together with the activation signal, the output circuit (b-4) that stops generating the output is still turned on. In this automatic faucet, when a person stands in front of the washbasin (1) to wash their hands, the sensing part (a) automatically detects this and sends a signal to the control part (b). , the control unit (lJ) controls the water supply unit (d
) fffl j-, ゛Start water supply properly. The water supply starts 8 after the sensing part (a) starts sensing the user's hand 1ψ within the screening time 8, and is stopped after the iY total time T2 after the sensing disappears. If the water supply continues abnormally longer than the time required for normal hand washing or washing, the water supply will automatically stop after the prohibited time T3 even if sensing is in progress. Time chart 1- is shown in FIG. In addition, prohibition time 1 is set.

[This is to prevent water from flowing out due to some reason, such as soap liquid landing on the sensing part (a) and being left unattended. In the above embodiment, when you put your hand into the handwash basin (1), it automatically senses this and starts supplying water regardless of whether or not you have the intention to perform C1 handwashing. Needless to say, it is also possible to adopt a system that can be called an intention-sensing method, which senses the intention to wash hands and supplies C water only when the person has the intention to wash their hands. will be explained below as a second example,
A sensing part (a) consisting of an infrared photoelectric sensor, etc. is attached to the building wall (2) near the washbasin (1) as shown in Figure 7, and a control part (b) is attached to the beginning of the sensing part (a). When detected, the drive track section (C) is energized to open the water supply section (d), and when the next detection is detected, the drive section (+1'\) is de-energized and the valve is closed. The block diagram is shown in FIG. occurs, and is retold at the next rising edge of the start signal.
A bistable multi-bin/lator circuit (b-!i) that stops the generation of the C output signal, and a two-way signal that starts from the start of the output signal generation (time) after the prohibition time T, generates the output signal A timer circuit that rets when it disappears (
i]-2), and a bistable multi-height resistor resetting circuit (1)-6) for resetting the bistable multi-visolator circuit (b-5) based on Thailand 6fufu No. 148;
Output 15 of bistable high inflator circuit (b-5)
The output circuit (1)-4) generates an output to drive the drive unit <C) during signal generation. Therefore, when you try to wash your hands, the sensor (
At sorting time T+, start hand washing by holding your hand in front of the sensing part (a), avoid starting water supply, and after hand washing, hold your hand in front of the sensing part (a) again by holding your hand in front of the sensing part (a). The water supply can be stopped after the C sorting time Tt. Of course, if you forget to stop the water supply after starting the water supply, the water supply will be automatically stopped after the prohibition time Th. According to Fig. 9, it is possible to use one circuit for both the automatic sensing system of the first embodiment and the volitional sensing system of the second embodiment, and this circuit can be used in combination. The ivy diagram is shown in Fig. 10. In this 10-tsuk diagram, the mode changeover switch circuit (
b-7) and an output control circuit (b-8) to switch between the automatic sensing method and the volitional sensing method. In this way, it is only necessary to prepare one control section (1), and management is easy. FIG. 11 shows an example of a circuit in which the hand-operated changeover switch circuit (b-7) is configured with a manual changeover switch. In addition, as shown in FIG. 12, the body part (3a
) An automatic sensing type sensing part (a) is installed on the front and an intention sensing type sensing part (a) is installed on the building wall (2), respectively, and the mode changeover switch circuit (a) is set by the first used sensing part (a). b-7) may be automatically set to 1~.In addition, in the above-mentioned small embodiment, C is the sensing part (a).
) is an infrared photoelectric sensor, but it is also possible to use an electrostatic or ultrasonic sensor. In the figure, <24) is the drain pipe, and (25) is the rI Kun liquid inlet (
26) is a bypass valve for power outage compensation. Furthermore, in the above-mentioned embodiment, water is automatically supplied and stopped, but for example, as shown in FIG.
It is also possible to configure the device so that the desired thirst mixture water is discharged from 3). In other words, the water is placed on the upstream side of the water supply! <31) and hot water side piping (
32), and install a hot water mixer tap (33) connected to
d') and the inlet port (11) of the main body part 5)). The hot water mixing faucet (33) is, for example, an automatic device 1i to adjust the mixed water temperature to a desired temperature. It is convenient to use a mixing valve.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of an automatic faucet in use, and Figure 2 is a side view with a portion cut away.
Figure 3 is a cross-sectional view of the water discharging device of the water supply unit, showing the state in which the sensing unit is removed. ] Tsuku diagram, Figure 6 is timer [・-
G, 7th +′:! 0.1 A front view of an automatic water faucet in use showing another embodiment, Fig. 8 shows the cause of locking of the one shown in Fig. 7, No. 9N shows its time chart, and Fig. 10 shows a locking factor of the one shown in Fig. 7. Figures 11 and 11 are electrical circuits thereof, and Figures 12 and 13 are front views of still other embodiments of the automatic water faucet. a...Sensing section, b...Control section, 0...Drive 811 d...Water supply section, b-1...Malfunction prevention circuit 1...Faucet special outlet Daito Toki Co., Ltd., Figure 4, Figure 5, Figure 6

Claims (1)

[Claims] A sensing section that senses the human body, a control section that generates an output based on the sensing signal, a drive section that receives the output from the control section and drives it, and a water washing machine that is operated by this drive section. In cooperation with the water supply unit, the control unit ignores the sensing signal unless the sensing signal is generated and this generated state continues for a predetermined screening time, and the sensing signal disappears and the disappeared state continues for a predetermined delay time. An automatic faucet characterized by having a malfunction prevention 1F9 circuit that ignores the extinction of the sensing signal unless it continues.