CN2183648Y - Acoustic-optical delay switch with adjustable sensitivity - Google Patents

Abstract

The utility model relates to an acoustic-optical delay switch with adjustable sensitivity, which belongs to an electronic switch device and is composed of a two-stage amplifier, an optical control circuit, a triggering turnover circuit, a monostable delay circuit, a silicon-controlled switch, etc. The utility model has a function that when light is strong (>1LX), sound control is closed and when light is weak, the sound control is opened; switching-on sensitivity by acoustic control can be adjusted (switching-on intensity can be adjusted within a range from 40 dB to 80 dB). The acoustic-optical delay switch with adjustable sensitivity is used as lighting switches in public places. The utility model has the advantages of reliable performance when used, no flickering phenomenon and function of soft start; besides, the utility model is only provided with two lead terminals and is same as an ordinary switch.

Description

Acoustic-optical delay switch with adjustable sensitivity

The sound and light controlled delay switch that the utility model sensitivity is adjustable belongs to electronic switching device.

For saves energy, the delay cut-off switch is used at present.Wherein easy to use, advanced technology surely belong to sound and light controlled delay switch.But this type of present switch has following some shortcomings:

1, in the morning or when dusk, light-operated circuit began to work, incandescent lamp had scintillation.

2, sound controling sensitivity is low, and surveying factually mostly at the sound intensity is that 72dB could starting switch when above.And sensitivity is non-adjustable, can not adapt to the application of different occasions.

3, adopt bidirectional triode thyristor to make gate-controlled switch mostly.Required trigger current is big.

4, scarcely be two lead-in wire switches, use inconvenient.

5, no soft start function, it is big to start immediate current, and electric light is perishable.

The purpose of this utility model provides a kind of adjustable sound and light controlled delay switch of sensitivity that overcomes above deficiency.

The purpose of this utility model is achieved in that the sound and light controlled delay switch that a kind of sensitivity is adjustable, by the unlatching that is subjected to the common triggering reverse circuit of controlling of sound intensifier output and light-operated circuit to send triggering signal deactivation monostable time delay circuit controling thyristor switch, connect illuminating lamp, it is characterized in that: in the light-operated circuit, low-tension supply adds to the input of shaping circuit in the integrated circuit (IC) as optically-controlled signal after photo resistance R0 and the capacitor C in parallel with R0 3 and resistance R 2 dividing potential drops, be 3 pin of IC, 1 of IC, 2,3, circuit and 2 in 4 pin, the resistance R 11 of cross-over connection between 3 pin has been formed the homophase shaping circuit, the optically-controlled signal that 3 pin of IC are imported carries out shaping, the optically-controlled signal of 2 pin behind diode D2 output Shaping to forcing of Schmidt trigger by IC put 0 end, i.e. 5 pin of IC; The resistance R 5 of cross-over connection between 5,8 pin of the voice signal after the amplification circuit and IC in diode D1 adds to by 5,6,8,9 pin of IC, the resistance R 6 of cross-over connection between 6,9 pin of IC, 9 capacitor C that pin connects 6 of IC, 9 pin of C6 other end ground connection IC also connect the input of the triggering reverse circuit that Schmidt trigger that adjustable resistance W forms constitutes, i.e. 9 pin of IC; 6 pin of IC are regulated the upset level that W can change Schmidt trigger for triggering the output of reverse circuit, thereby change the sound controling sensitivity of sonic-opticalcon trolled switch; When voice signal exists and optically-controlled signal when being low level, 6 pin of IC just have high trigger signal output, add to triode T1 base stage through resistance R 7, diode D3, and the T1 collector electrode connects the T2 base stage, this point is gone back connecting resistance R8 one end, the high voltage source after another termination rectification of R8; The T1 collector electrode also connects capacitor C 7 one ends, and the C7 other end is to ground; T1, T2 grounded emitter, T2 collector electrode connecting resistance R9 one end, the high voltage source after another termination rectification of R9; The T2 collector electrode connects capacitor C 8 to ground, and extremely links to each other with SCR control through resistance R 10; The controllable silicon negative electrode is by thermistor Rt ground connection, and anode connects the high voltage source of two outer input ports behind full-wave bridge rectifier by sonic-opticalcon trolled switch; R8, C7 are the charging delay cell, and it is bright that this switch is triggered the back turn-on lamp, and high voltage source is reduced to the silicon controlled forward conduction voltage drop, about about 1 volt, this voltage charges to C7 by R8, T2 conducting when the voltage to C7 reaches 0.6 volt, the T2 collector voltage is reduced to and is bordering on 0 volt, and controllable silicon ends, and lamp goes out; The bright delay time of R8, C7 decision lamp; Owing to utilize the operating voltage of silicon controlled forward voltage drop, thereby make this delay switch lead-in wire that two ends only be arranged for delay circuit.

The sound and light controlled delay switch that the utility model sensitivity is adjustable is owing to adopted the adjustable Schmidt trigger of upset level as triggering reverse circuit, so the switch open sound controling sensitivity is easy to adjust.

Provide detailed structure of the present utility model with embodiment with reference to the accompanying drawings below.

Accompanying drawing 1 is the adjustable sound and light controlled delay switch block diagram of sensitivity.

Accompanying drawing 2 is circuit diagrams.

The embodiment circuit of the sound and light controlled delay switch that sensitivity is adjustable is seen accompanying drawing 2.

The voice signal that is received by microphone M is coupled to 13 pin of integrated circuit (IC) through capacitor C 2, and the two-stage linear amplifier of being made up of circuit and resistance R 3, R4 capacitor C 4 in 13,12,11,10 pin of IC amplifies.The 9 pin inputs of the IC of the triggering reverse circuit that the Schmidt trigger that circuit and resistance R 5, R6, adjustable resistance W, capacitor C 6 form in diode D1 adds to by 5,6,8,9 pin of IC of the voice signal after the amplification constitutes.Adjust the upset level that adjustable resistance W can change Schmidt trigger, thereby change the sound controling sensitivity of audio-switch.Sensitivity is the highest when the W short circuit, and opening the sound intensity can be less than 40dB, regulates W and can make and open the sound intensity and change between 40dB to 80dB.

Light-operated circuit is made up of circuit and resistance R 0, R2, R11, capacitor C 3 in 1～4 pin of IC.Low-tension supply is after photo resistance R0 and resistance R 2 dividing potential drops, add to 3 pin of IC as optically-controlled signal, photosensitive resistance R 0 is less than R2 when light is strong, voltage by 3 pin that add to IC after R0, the R2 dividing potential drop is low-tension supply voltage greater than 1/2Vcc(Vcc), after the homophase shaping circuit shaping that circuit and resistance R 11 are formed in 1～4 pin of IC, 2 pin output high level " 1 " by IC, export forcing of Schmidt trigger to through diode D2 isolation and put 0 end, be 5 pin of IC, to trigger reverse circuit and put 0, its output is that 6 pin of IC are low level " 0 ".There is voiceless sound not have triggering signal output.When a little less than the light, R0＞R2, the 3 pin voltages of IC by the 2 pin output low levels " 0 " of IC, are isolated through D2 after shaping less than 1/2Vcc, releasing puts 0 to circuits for triggering, at this moment if voice signal is arranged through D1, when the triggering input of delivering to Schmidt trigger was 9 pin of IC, the trigger output was that 6 pin of IC are high level " 1 ", this high level is delivered to triode T1 base stage through resistance R 7, diode D3, as the triggering signal of monostable time delay circuit.The monostable time delay circuit is by resistance R 7, R8, R9 diode D3, capacitor C 7, C8, and triode T1, T2 form.Diode D4～D7, unidirectional controllable silicon S CR, resistance R 10, thermistor Rt constitutes the reverse-blocking tetrode thyristor circuit with soft start function.

When triggering the reverse circuit output is 6 pin of IC when being low level, and triode T1 ends, and the T2 base stage is that C7 charges to 0.6V through R8, the T2 conducting, and T2 collector voltage Vc2 is a low level, and controllable silicon is closed, and lamp goes out.When circuits for triggering had triggering signal output, 6 pin of IC were high level, the T1 conducting, and C7 discharges rapidly by T1, and T1 collector voltage Vc1 is a low level, and T2 raises by Vc2, and controllable silicon SCR conducting lamp is bright.Thermistor Rt is bigger during the firm conducting of SCR, has limited the electric current that flows through incandescent lamp when starting, along with electric current by Rt, the Rt heating, resistance is decreased to and is bordering on short circuit, therefore can ignore to the influence of lamp.So both realized soft start function, again lamp had been had no adverse effects after bright.

220 volts of alternating currents were not worked for T1, T2 through D4～D7 rectification when lamp worked, and provided operating voltage as low-tension supply for IC by R12, R13 step-down.After lamp was bright, the voltage behind D4-D7 dropped to (forward voltage drop during the controllable silicon conducting) about 1 volt, and the IC dead electricity is not worked.This 1 volt of left and right sides voltage is the C7 charging through R8, and the charging interval was by the size decision of R8, C7, general desirable about 60 seconds.The last voltage of C7 reaches the level (about 0.6 volt) that makes the T2 conducting after 60 seconds, the T2 conducting, and T2 collector voltage Vc2 is a low level, and controllable silicon ends, and lamp goes out.Finish an acoustic control and opened the function of time-delay closing.Because the T1 collector electrode connects the T2 base stage, the T2 collector electrode connects the controllable silicon SCR control utmost point through R10, though T1, T2 by the 220V rectification after R8, R9 power supply all is operated in low-pressure state, can select small-power low pressure triode.Reduced cost.

Controllable silicon SCR conducting when lamp is bright, the IC dead electricity is not worked, when lamp by bright to the moment of going out, 220 volts of alternating currents are through the D4-D7 rectification, through R12, R13, the C5 step-down, be filtered into IC operating voltage is provided, because during this moment, be light weak, photo resistance R0＞R2, light-operated circuit do not play circuits for triggering and put 0 and act on, simultaneously because IC has just added voltage, even there is not the external sound signal, because the various uncertain factors in the IC power up will cause the output of circuits for triggering also uncertain, as be output as high level and will make lamp bright more again, cause that lamp dodges bright again fault when noiseless, for avoiding this phenomenon, the two ends shunt capacitance C3 of photo resistance R0 in circuit.Like this in the moment that IC powers on, because the existence of C3, light-operated input signal moment is a high level, forces to trigger reverse circuit and put 0, and lamp is gone out, and can not dodge just bright.Force the size decision of 0 time of putting by R0, C3, desirable less than 0.3 second.Can not cause the problem that can not at once trigger again like this to the sounds trigger signal that occurs subsequently.

The sound and light controlled delay switch that the utility model sensitivity is adjustable also has the adjustment characteristic of simple, as long as finish by the figure assembling, almost need not to adjust.

The sound and light controlled delay switch that the utility model sensitivity is adjustable is specially adapted to the lamp switch of public arenas such as corridor, corridor, lavatory, bicycle parking canopy, really realizes people Lai Dengliang, turns off the light when you leave, and the power saving rate height is regulated W and made and also can be used as burglar alarm when highly sensitive.

As a kind of embodiment, it is as follows that each component value is got by institute:

R0 is the MG45-32 photo resistance;

R1＝R7＝10KΩ；R2＝100KΩ；

R3＝R4＝R5＝R6＝1MΩ；

W is the adjustable real core resistor of 300K; R8=R9=470K Ω; R10=430 Ω;

R11＝820KΩ；R12＝R13＝51KΩ；

C1＝1500PF；C2＝C4＝C6＝C8＝0.01μF；C3＝1μF；

C5＝C7＝100μF；

M is an Electret condenser microphone; D1～D3 is IN4148; D4～D7 is IN4007;

SCR is the 1A400V one-way SCR;

IC is interior by the two-stage linear amplifier, two not gates, and a Schmidt trigger is formed.

Claims (2)

1, the sound and light controlled delay switch that a kind of sensitivity is adjustable, by the unlatching that is subjected to the common triggering reverse circuit of controlling of sound intensifier output and light-operated circuit to send triggering signal deactivation monostable time delay circuit controling thyristor switch, connect illuminating lamp, it is characterized in that: in the light-operated circuit, low-tension supply adds to the input of shaping circuit in the integrated circuit (IC) as optically-controlled signal after photo resistance R0 and the capacitor C in parallel with R0 3 and resistance R 2 dividing potential drops, be 3 pin of IC, 1 of IC, 2,3, circuit and 2 in 4 pin, the resistance R 11 of cross-over connection between 3 pin has been formed the homophase shaping circuit, the optically-controlled signal that 3 pin of IC are imported carries out shaping, the optically-controlled signal of 2 pin behind diode D2 output Shaping to forcing of Schmidt trigger by IC put 0 end, i.e. 5 pin of IC; The resistance R 5 of cross-over connection between 5,8 pin of the voice signal after the amplification circuit and IC in diode D1 adds to by 5,6,8,9 pin of IC, the resistance R 6 of cross-over connection between 6,9 pin of IC, 9 capacitor C that pin connects 6 of IC, C6 other end ground connection, 9 pin of IC also connect the input of the triggering reverse circuit that Schmidt trigger that adjustable resistance W forms constitutes, i.e. 9 pin of IC; 6 pin of IC are regulated the upset level that W can change Schmidt trigger for triggering the output of reverse circuit, thereby change the sound controling sensitivity of sonic-opticalcon trolled switch; When voice signal exists and optically-controlled signal when being low level, 6 pin of IC just have high trigger signal output, add to triode T1 base stage through resistance R 7, diode D3, and the T1 collector electrode connects the T2 base stage, this point is gone back connecting resistance R8 one end, the high voltage source after another termination rectification of R8; The T1 collector electrode also connects capacitor C 7 one ends, and the C7 other end is to ground; T1, T2 grounded emitter, T2 collector electrode connecting resistance R9 one end, the high voltage source after another termination rectification of R9; The T2 collector electrode connects capacitor C 8 to ground, and extremely links to each other with SCR control through resistance R 10; The controllable silicon negative electrode is by thermistor Rt ground connection, and anode connects the high voltage source of two outer input ports behind full-wave bridge rectifier by sonic-opticalcon trolled switch; R8, C7 are the charging delay cell.

2,, it is characterized in that integrated circuit (IC) can choose CMOS six not gates such as CO33, CD4069, MC14069 etc. according to the adjustable sound and light controlled delay switch of claim 1 described sensitivity.

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