CN202580240U

CN202580240U - Automatic water drain control device

Info

Publication number: CN202580240U
Application number: CN 201220204815
Authority: CN
Inventors: 黄婷瑜; 吴雄杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2012-12-05
Anticipated expiration: 2022-05-09

Abstract

The utility model relates to an automatic water drain control device which comprises a water level detection circuit and an infrared driving circuit, wherein the water level detection circuit detects a water level signal through metal probes A and B respectively inserted into running water tubes, and the signal is connected with a buzzer BDD through a field-effect tube Q1 and a triode Q2; and the infrared driving circuit forms a pulse oscillator through an amplifier IC1 and a resistor R1 and a capacitor C1 peripherally connected, an output signal of the oscillator is transmitted to the infrared light-emitting diode VD1 through a transistor VT1, a phototriode VT2 receives an infrared light signal sent by the infrared light-emitting diode VD1 and transports the infrared light signal to an audio decoder IC2 of an LM567 phase-locked loop of a driving solenoid valve. The device can be used for hand washing in public occasions such as public toilets, hospitals, bus stations, cafeterias and the like, cross infection caused by touching a faucet is prevented, and convenient and safe water use is provided.

Description

A kind of control gear that discharges water automatically

Technical field

The utility model relates to a kind of control gear, particularly be a kind of control gear that discharges water automatically.

Background technique

Existing water tap automatic control circuit is more various, most induction or touchly be controlled to be the master, but most water tap is because complicated circuit, cost are high, and application places is very limited.

The model utility content

The purpose of the utility model is to provide a kind of control gear that discharges water automatically.

The utility model solves the technological scheme that its technical problem adopted: a kind of control gear that discharges water automatically; Comprise water level detection circuit and infrared driver circuit; Said water level detection circuit is by the metal probe A, the B sensed water level signal that are inserted in the running water pipe the inside respectively; This signal is connected to news Chinese percussion instrument BDD through field effect transistor Q1, triode Q2 respectively; Said infrared driver circuit constitutes the synchronous mode impulse oscillator by amplifier IC1 and peripheral resistance R 1, the capacitor C1 that connects thereof; The output signal of this oscillator transfers to infrarede emitting diode VD1 through transistor VT1, and phototransistor VT2 receives the infrared signal that infrarede emitting diode VD1 sends, and is delivered to the tone decoder IC2 of LM567 phaselocked loop; The output terminal of the tone decoder IC2 of said LM567 phaselocked loop is connected to the in-phase end of amplifier IC1 and the input end of photo coupler U1, and the output terminal of said photo coupler U1 is connected to solenoid valve through relay J.

Preferably, said amplifier IC1 adopts the uA741 operational amplifier.

Preferably, said infrarede emitting diode VD1 adopts the TLN104 infrarede emitting diode.

Preferably, said phototransistor VT2 adopts the TLP104 phototransistor.

Through adopting above-mentioned technological scheme; The beneficial effect of the utility model is: when the people washed one's hands, the utility model utilized reflective infrared sensing means, can make electromagnetic valve open automatically, discharge water; Whether detect from the beginning water level simultaneously cuts off the water; At once send alarm sound in case cut off the water, wash after the hand people leaves, electromagnetic valve is closed the water source automatically; The utility model can be used for the HAND WASH of public arenas such as public lavatory, hospital, station and dining room, prevents to touch the cross infection that water tap causes, provide convenience, safety water.

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model.

Embodiment

As shown in Figure 1, a kind of control gear that discharges water automatically of the utility model comprises water level detection circuit and infrared driver circuit; Said water level detection circuit is by the metal probe A, the B sensed water level signal that are inserted in the running water pipe the inside respectively, and this signal is connected to news Chinese percussion instrument BDD through field effect transistor Q1, triode Q2 respectively, when water level does not contact between metal probe A, the B; Be input to the N channel junction field-effect pipe of field effect Q1, field effect Q1 is on state, through resistance 1R3 current limliting; Triode Q2 is in cut-off state; News Chinese percussion instrument BDD sends the alarm sound, and the prompting tap water is cut off the water, can not supply the water source and wash one's hands.

Said infrared driver circuit constitutes the synchronous mode impulse oscillator by uA741 operational amplifier IC1 and peripheral resistance R 1, the capacitor C1 that connects thereof; The output signal of this oscillator transfers to TLN104 infrarede emitting diode VD1 through transistor VT1; TLP104 phototransistor VT2 receives the infrared signal that TLN104 infrarede emitting diode VD1 sends, and is delivered to the tone decoder IC2 of LM567 phaselocked loop, and the lock phase CF center frequency fo of the tone decoder IC2 of LM567 phaselocked loop is by the external resistance R 6 of its 5th, 6 pin, 5 decisions of capacitor C; Promptly lock the phase CF center frequency and be about 21kHz; When someone walked close to, after power on circuitry, the triangular signal of the 21kHz of the 6th pin of the tone decoder IC2 of LM567 phaselocked loop output directly was sent to the in-phase input end of uA741 operational amplifier IC1; Amplify and resistance R 1, the filtering of capacitor C1 feeder loop through uA741 operational amplifier IC1; Make uA741 operational amplifier IC1 output 21kHz pulse square wave, this signal drives TLN104 infrarede emitting diode VD1 through resistance R 2 and sends the infrared pulse ripple, and the infrared signal that TLP104 phototransistor VT2 reflects human body converts corresponding electrical pulsing signal to; And be sent to the 3rd pin signal input part of the tone decoder IC2 of LM567 phaselocked loop; The 8th pin output terminal of the tone decoder IC2 of LM567 phaselocked loop is low level output, and photo coupler U1 is on state, because photo coupler U1 output terminal also is low level state; Relay J gets the electrician and does adhesive, promotes solenoid valve and opens water supply.

When human body leaves, because TLP104 phototransistor VT2 does not have the infrared signal reflection, the 8th pin output high level of the tone decoder IC2 of LM567 phaselocked loop; Photo coupler U1 is input as high level state; Therefore the output terminal of photo coupler U1 also is in cut-off state, and relay J dead electricity and discharging is turn-offed solenoid valve; Realize promptly detecting and manage whether lack of water of water level from the beginning, can open or close water tap automatically again.

An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. control gear that discharges water automatically; It is characterized in that: comprise water level detection circuit and infrared driver circuit; Said water level detection circuit is by the metal probe A, the B sensed water level signal that are inserted in the running water pipe the inside respectively; This signal is connected to news Chinese percussion instrument BDD through field effect transistor Q1, triode Q2 respectively; Said infrared driver circuit constitutes the synchronous mode impulse oscillator by amplifier IC1 and peripheral resistance R 1, the capacitor C1 that connects thereof; The output signal of this oscillator transfers to infrarede emitting diode VD1 through transistor VT1, and phototransistor VT2 receives the infrared signal that infrarede emitting diode VD1 sends, and is delivered to the tone decoder IC2 of LM567 phaselocked loop; The output terminal of the tone decoder IC2 of said LM567 phaselocked loop is connected to the in-phase end of amplifier IC1 and the input end of photo coupler U1, and the output terminal of said photo coupler U1 is connected to solenoid valve through relay J.

2. the control gear that discharges water automatically according to claim 1 is characterized in that: said amplifier IC1 adopts the uA741 operational amplifier.

3. the control gear that discharges water automatically according to claim 1 and 2 is characterized in that: said infrarede emitting diode VD1 adopts the TLN104 infrarede emitting diode.

4. the control gear that discharges water automatically according to claim 3 is characterized in that: said phototransistor VT2 adopts the TLP104 phototransistor.