CN201861539U

CN201861539U - Infrared control circuit of hand drier

Info

Publication number: CN201861539U
Application number: CN2009202732009U
Authority: CN
Inventors: 兰莉莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2011-06-15
Anticipated expiration: 2019-12-09

Abstract

The utility model relates to an infrared control circuit of a hand drier, belonging to the technical field of infrared inductive electronic switches. The infrared control circuit can control a switch to be switched on when a hand or an object is sensed to enter the reflected range of detected infrared ray, automatically starts an electric drier to work, when the hand or the reflected object is removed, delay shutoff is output, and a circuit is in a standby detection state. The infrared control circuit is characterized by comprising a manual starting button, a switch for drying hair, an automatic manual starting and changeover switch, a power circuit, an infrared transmitting circuit, a receiving and shaping amplification circuit, a control and delay circuit, an execution circuit, an indicating lamp and an electric blowing circuit. A system power supply is two groups of power supplies which limit current, reduce voltage, rectify, filter and stabilize voltage; and the electric drier used for the output end has strong and weak wind and high-low temperature control, and can be used for drying hairs and hands. In the infrared control circuit, the circuit is simple, the cost is low, the power consumption is low, the starting is sensitive, the working state is stable, convenience and practicability are achieved and the promotion is easy.

Description

Hand dryer infrared control circuit

Technical field:

The utility model belongs to electronic technology infrared induction electronic switch field, relate to a kind of hand or object near and reflected infrared ray makes a kind of switch of circuit turn-on.

Background technology:

Hand dryer circuit of the prior art, big multicircuit complexity, cost height, duty is also stable inadequately, as the ZL200620001248.0 automatic temperature-control infrared induction hand dryer of patented technology, is made up of complicated circuits such as little processing core controls, cost height, performance are stable inadequately.

Summary of the invention:

The utility model purpose is to provide a kind of infrared induction electronic switch, hand dryer infrared control circuit, can the perception hand or object when entering in the scope that the infrared ray of detection is reflected, promptly reach hand dryer following time when hand, because of close reflected infrared ray, circuit turn-on, start the electrical equipment controlled, as automatic startup hair dryer work, hand is taken away or the object that reflects is removed, the output time delayed turn-off, circuit enters the standby detected state again.

The utility model is achieved through the following technical solutions:

A kind of hand dryer infrared control circuit is characterized in that: by manually booting button, the switch of dried hair, auto-manual startup change-over switch, power circuit, the infrared emission circuit receives shaping amplification circuit, control and delay circuit, executive circuit, indicator lamp, the hair dryer circuit constitutes.

The normally opened contact that manually boots button and the automatic relay of control of hand dryer and do when sending out with three groups of contacts of K switch 2 and connect is serially connected with input/output terminal again, exports the termination hair dryer; System power supply change-over switch K1 is connected in the input and output two ends that manually boot button AN1.When the system power supply circuit switches to when manually booting state, be Zero-power-consumption standby; When the system power supply circuit switches to automatic control holding state, only cut off out-put supply.

System power supply is two groups of power supplys of capacitance current-limiting step-down rectifier filtering voltage regulation, separate the interference between emission and the receiving circuit, guarantee the stability of circuit, one group of radiating circuit power supply is dog days, another group be ten second of the three ten-day periods of the hot season power supply, one the tunnel for carrying out relay, control and delay circuit work, and another road supplies to receive shaping amplification circuit work after voltage stabilizing becomes five volts; Radiating circuit is the circuit board transformation of the way of remote controller, the circuit board of common finished product remote controller, stable performance, at former transmitting tube place and connect a transmitting tube, adjust the certain drift angle of two pipes, enlarge ultrared emission range of receiving, improve the startup sensitivity of hand dryer, serial connection potentiometer W1 transmission power adjustment in transmitting tube or its amplifying triode emitter stage; The hair dryer that output is used has strong and weak wind and height temperature control, does dry hand and can both use.

Effect of reception control circuit signal flow and annexation: after the reflection that the infrared signal that radiating circuit sends is handled, receive the output pin output low level of head, one the tunnel connects capacitor C 3 to power cathode through diode D11, the positive pole of capacitor C 3 is connected in series voltage-stabiliser tube VD3 again to triode Q1 base stage, the grounded emitter of triode Q1, its colelctor electrode connect the control utmost point of controllable silicon SCR 1; When receiving an output pin output low level, capacitor C 3 is through diode D11 discharge, and voltage-stabiliser tube VD3, triode Q1 end; Another road connects the base stage of triode Q2 through diode D12, and its colelctor electrode connects power supply through resistance R 8, and emitter stage connects the control utmost point of controllable silicon SCR 1; When receiving an output pin output low level, make triode Q2 conducting through diode D12, the control that power supply makes controllable silicon SCR 1 through resistance R 8, Q2 is high potential very, circuit is triggered and keeps conducting, the power supply of ten second of the three ten-day periods of the hot seasons through coil-end, silicon controlled anode negative electrode, the diode D9 of relay, be connected in power cathode.When the object of hand or reflection is removed, receive head because of no infrared reflection, its output pin output high level, one the tunnel ends diode D12, and triode Q2 ends, and another road is ended diode D11, power supply is delayed time to capacitor C 3 chargings through resistance R 4, R6, voltage rises, voltage-stabiliser tube VD3 conducting, triode Q 1 conducting, silicon control zero-cross turn-offs, relay J 1 discharges, and output is turn-offed, and reenters the standby detected state.D9 is that the reliable zero-crossing switching of controllable silicon is established.D11, D12 separate a reception output and delay circuit and open pining down and disturbing of control circuit.

Beneficial effect is: circuit is simple, and cost is low, and is low in energy consumption, starts sensitivity, and stable working state is convenient and practical.

Description of drawings:

Fig. 1 is the utility model pie graph.Fig. 2 is the utility model circuit diagram.

Constitute: the power supply of 3V 1., radiating circuit 2., the power supply of 12V 3., the power supply of 5V is 4., receive shaping and amplify 5., 7. 6. control and time-delay are carried out, and hair dryer 8., 9. for automatically and manually boot change-over switch K1,10. be manual actuation of button AN1, K2 uses Live switch when doing.

The specific embodiment:

As shown in Figure 2, the utility model hand dryer infrared control circuit, AN1 should be selected the big button that resets certainly of contact current for use; Relay JZC-23F, K2 sends out switch for doing, and being convenient to do dry hand can both use, and Q1, Q2 are NPN type triode, and the integrated reception head of H, SCR1 are controllable silicon, and R is a resistance, and C1-5 is an electrochemical capacitor, and C6-7 is the electric capacity of the dacron of withstand voltage 400V; Voltage-stabiliser tube VD1 is 12V, 1W, and voltage-stabiliser tube VD 2 chooses 5V, 0.5W, and voltage-stabiliser tube VD3 chooses 4V, 0.5W, and voltage-stabiliser tube VD4 chooses 3V, 0.5W.D1-12 is a diode, and D13-14 is a light emitting diode, and TD1-2 is an infrared transmitting tube, radiating circuit is the circuit board transformation of the way of remote controller, and one of them contact of short circuit makes it be in reflective condition always, for reduced volume can be removed redundance, R6, R7, C3 adjust for starting the back time delayed turn-off time.Require to start sensitivity, time delayed turn-off is slower better.

Hand dryer infrared control circuit, circuit is simple, and cost is low, and is low in energy consumption, convenient and practical, easily promotes.

Claims

1. a hand dryer infrared control circuit is characterized in that: by manually booting button, the switch of dried hair, auto-manual startup change-over switch, power circuit, the infrared emission circuit receives shaping amplification circuit, control and delay circuit, executive circuit, indicator lamp, the hair dryer circuit constitutes; The normally opened contact that manually boots button and the automatic relay of control of hand dryer and do three groups of contacts of Live switch [K2] when sending out and connect is serially connected with input/output terminal, output termination hair dryer again; System power supply change-over switch [K1] is connected in the input and output two ends that manually boot button [AN1]; System power supply is two groups of power supplys of capacitance current-limiting step-down rectifier filtering voltage regulation, one group of radiating circuit power supply is dog days, another group be ten second of the three ten-day periods of the hot season power supply, the one tunnel for carrying out relay, start-up control and delay circuit work, the confession after voltage stabilizing becomes five volts of another road receives shaping amplification circuit work; Radiating circuit is the circuit board transformation of the way of remote controller, at former transmitting tube place and connect a transmitting tube, adjusts the certain drift angle of two pipes, seals in the potentiometer [W1] into transmission power adjustment in transmitting tube or its amplifying triode emitter stage; The hair dryer that output is used has strong and weak wind and height temperature control; Reception control circuit signal flow and annexation are: after the reflection that the infrared signal that radiating circuit sends is handled, receive the output pin output low level of head, one the tunnel connects electric capacity [C3] to power cathode through diode [D11], the positive pole of electric capacity [C3] is connected in series voltage-stabiliser tube [VD3] again to triode [Q1] base stage, the grounded emitter of triode [Q1], its colelctor electrode connect the control utmost point of controllable silicon [SCR1]; Another road connects the base stage of triode [Q2] through diode [D12], and its colelctor electrode connects power supply through resistance [R8], and emitter stage connects the control utmost point of controllable silicon [SCR1]; The power supply of ten second of the three ten-day periods of the hot seasons through anode negative electrode, the diode [D9] of the coil-end of relay, controllable silicon [SCR1], be connected in power cathode.