CN2342519Y

CN2342519Y - Electronic remote control change-over switch

Info

Publication number: CN2342519Y
Application number: CN 97248102
Authority: CN
Inventors: 赵于忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-29
Filing date: 1997-10-29
Publication date: 1999-10-06
Anticipated expiration: 2007-10-29

Abstract

The utility model relates to an electronic remote control change-over switch which belongs to a switch, particularly to an electronic change-over switch controlled by the sound and the light. The switch can use a common CMOS integrated package to form a main control circuit; the switching on / switching off state of a bidirectional thyristor connected to a load circuit in series is controlled by the photoelectric isolation output, therefore the load circuit can be converted between the switching on state and the switching off state. The utility model has the advantages of easy operation, no mechanical contact, long service life, small surge impulsion on the controlled elements, less power consumption, zero crossing triggering, no harmful pollution on the electric network, full isolation between the human body and the strong electricity, and good safety. The utility model can be used for the occasions, such as automatic control, automatic alarming, lighting control, etc.

Description

The electronic telecontrol change over switch

The utility model belongs to a kind of switch, particularly is subjected to the electronic commutator of acousto-optic control.

In order to eliminate phenomenon kept burning day and night and that street lamp is opened is convenient at public passage street lamp night, the self-extinguishing switch of acousto-optic control has appearred on the market in recent years, and also in Chinese patent literature have a report more.This electron-like switch generally only is used for public passage, and after lamp was bright, time-delay a period of time just extinguished automatically, in family or to need the occasion of longer lighting hours be inapplicable.The time in handicapped personnel such as the old and the weak is residual, use existing various switch all to seem very inconvenient.

The purpose of this utility model provides a kind of telecontrol electronic switch, and it is easy and simple to handle, does not have mechanical contact, and long service life is little to controlled device surge impact; Power consumption is little, and is pollution-free to electrical network; The person is isolated fully with forceful electric power, and fail safe is good; Can be applicable to automatic control, automatically report to the police, occasion such as illumination control handicapped personnel such as (use) especially suitable the old and the weak are residual.

The realization the technical solution of the utility model is: go out two loops in the parallel connection of the connection alternating current 220V of this switch end, promptly

(1) one loop is the circuit of control power supply and control section, connect by step-down, rectification, voltage stabilizing and filter circuit successively and constitute, with+control circuit that the 6V VD is provided to the transducer amplifying circuit and is made up of four above trigger integrated packages, first trigger of this control circuit and peripheral cell are monostable circuit, its input is connecting the output of transducer amplifying circuit, the trigger of follow-up centre constitutes binary counter, accept the clock signal and the output signal trigger to the end of monostable circuit output, promptly trigger change-over circuit;

(2) another loop is load and switching circuit, it is in series by load and bidirectional thyristor, DC side at the bidirectional thyristor rectifier bridge connects a unidirectional thyristor, the grid of this thyristor connects the output of photoelectrical coupler, and the input of photoelectrical coupler connects the output control terminal of above-mentioned triggering change-over circuit.

Below, the specific embodiment of the present utility model according to this Figure of description provides is further described its structure.

Fig. 1 is an electrical block diagram of the present utility model.

Referring to accompanying drawing, this example is an acousto-optic electronic telecontrol change over switch, and its terminal place parallel connection that connects alternating current 220V goes out two loops.In a loop, be orderly connected with resistance-capacitance depressurization circuit (R1, C1), bridge rectifier (VD5～VD8), and the voltage stabilizing and the filter circuit (VS, V1 etc.) that are connected in this bridge rectifier output, these several parts have constituted the control power supply of this switch, obtain stable+6V VD, offer transducer amplifying circuit (HTD, V2, V3, C4, C5 etc.) and by two CMOS integrated package CD4027 (control circuit of trigger D1～D4) form.The trigger that constitutes monostable circuit, binary counter and triggering change-over circuit can adopt two above trigger integrated package CD4027, and (D1～D4) connection constitutes.First trigger (D1 etc.) of the described control circuit of output termination of transducer amplifying circuit, carries out shaping and exports with clock signal the signal after amplifying as the monostable clock circuit with it; Middle two triggers (being D2, D3 etc.) have constituted two binary counters, and then as triggering change-over circuit (D4 etc.), they trigger upset by the clock signal from the monostable clock circuit to last trigger.And another loop that is parallel to alternating current 220V terminal by load (Load) and diode rectifier bridge (VD1～VD4) and a thyristor (VT) that connects on rectifying bridge type constitute.The grid of this thyristor (VT) connects the output of photoelectrical coupler (E), and the input in the photoelectrical coupler (E) connects the output control terminal of above-mentioned triggering change-over circuit (D4).The transducer amplifying circuit can connect formation by different sensing elements (as acoustic sensor etc.) with triode, this example is used is piezoelectric patches (HTD) and the two-staged transistor voltage negative feedback amplifier (V2, V3, C4, C5 etc.) that connected thereof.Can connect a photo resistance RG at the reset terminal R that triggers change-over circuit trigger (D4), constitute light-operated circuit with another resistance (R14), it can decide/remove switch lock according to the light power.The output Q of trigger (D4) connects photoelectrical coupler (E) input by switching tube (V4), it with photoelectricity isolate way of output control load loop the on/off conversion.Can connect the anti-jamming circuit that a routing resistance (R13), electric capacity (C8) and diode (VD12) are formed at the output Q of monostable clock circuit trigger (D1), the positive pole of this electric capacity (C8) is connected to the reset terminal R of two binary counter final stage triggers (D3) by this diode (VD12).Present embodiment adopts two CMOS integrated circuits 4027, and (D1～D4) and peripheral cell thereof constitute monostable circuit (D1), two binary counters (D2, D3) and triggering change-over circuit (D4), (but connection electrical resistance (R12) in the circuit of D1～D4), electric capacity (C7), diode (VD10) and (VD11) constitute reset circuit in limited time at two binary counters.

When audible signal (SD) occurring, piezoelectric patches (HTD) send two-stage Voltage Negative feedback Amplifier (V2, V3, C4, C5 etc.) with signal, and the signal after the amplification send monostable circuit (D1 etc.) through the clock signal of shaping as counter and triggering change-over circuit.When only the number of times that occurs when audible signal in the time limit of setting equals three times, just can make and trigger change-over circuit (D4) upset, thereby make switching tube (V4) conduction and cut-off, and then by optocoupler output control thyristor (VT) conduction and cut-off, the conversion of on/off appears in load thereupon (Load) loop.When electromagnetic interference occurring in the electrical network, then clock signal is continuously high level, charge to electric capacity (C8) by resistance (R13), the positive pole of this electric capacity is connected to the reset terminal R of final stage trigger (D3) on the binary counter by diode (VD12), after reaching threshold voltage, make trigger reset, input J, the K that causes D4 is electronegative potential, the state of this trigger is locked, thereby has suppressed interference.

From technique scheme of the present utility model, this switching manipulation is easy, and simple in structure and reliable, manufacturing cost is lower; Do not have mechanical contact, long service life is to little by the control elements surge impact; Power consumption is little, and use cost is low; Light-operated lock-out state, energy-saving effect is obvious; The person is isolated fully with forceful electric power, and fail safe is good.Reasonable in design, the current cost performance is lower, has better market prospect.

Claims

1, a kind of electronic telecontrol change over switch is characterized in that switch goes out two loops in the input parallel connection that meets alternating current 220V, promptly

2,, it is characterized in that described control power supply is connected successively by RC step-down, rectifier bridge, voltage stabilizing didoe and transistor filter to constitute by the described electronic telecontrol change over switch of claim 1; Transducer in the transducer amplifying circuit can be used acoustic sensor; The trigger that constitutes monostable circuit, binary counter and triggering change-over circuit can adopt two above trigger integrated packages to connect formation; Output at monostable clock circuit trigger can connect the anti-jamming circuit that a routing resistance, electric capacity and diode are formed, and the positive pole of this electric capacity is connected to the reset terminal of binary counter output stage trigger by this diode; Can connect a photo resistance and another resistance formation light-operated circuit at the reset terminal that triggers the change-over circuit trigger.

3, by the described electronic telecontrol change over switch of claim 2, it is characterized in that transducer and amplifying circuit thereof can be made of piezoelectric patches and the two-staged transistor that is connected voltage negative feedback circuit thereof; Can adopt two CMOS integrated circuits 4027 and peripheral cell thereof formation monostable circuit, two binary counters and trigger change-over circuit, two binary counters connect into the reset circuit in limited time that is made of resistance, electric capacity, diode.