CN201345766Y

CN201345766Y - Anti-jamming sound and light control switch

Info

Publication number: CN201345766Y
Application number: CNU2009200790334U
Authority: CN
Inventors: 陈清尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-13
Filing date: 2009-02-13
Publication date: 2009-11-11
Anticipated expiration: 2019-02-13

Abstract

The utility model discloses an anti-jamming sound and light control switch, which is characterized in that the anti-jamming sound and light control switch comprises a power supply circuit, a signal amplifying and shaping circuit, a signal storage circuit, a pulse zero-clearing circuit and an output control circuit; the power supply circuit consists of a transformer, a rectifier and a filter capacitor; the signal amplifying and shaping circuit consists of a microphone, a resistor-capacitor device, a photoelectric tube, an amplifying transistor and a time-base circuit IC1; the signal storage circuit consists of double D triggers IC2 and IC3 and a peripheral resistor; the pulse zero-clearing circuit consists of the time-base circuit IC4, a peripheral resistor-capacitor device and a diode, and an output end thereof is connected with zero-clearing ends R1 and R2 of a memory IC 2; and the output control circuit consists of a resistor R8, a transistor BG2, a controlled silicon BCR and an indicating lamp LED 1. The anti-jamming sound and light control switch is applicable to installation of in stairs, aisles, toilets and other places under a variety of environments for controlling street lamps for lighting. In addition, the product has the advantages of safety, reliability, no influence by environmental miscellaneous sound and convenient installation.

Description

Anti-interference sonic-opticalcon trolled switch

Technical field

The utility model relates to electronic equipments, is specifically related to anti-interference sonic-opticalcon trolled switch.

Background technology

At present, the local sonic-opticalcon trolled switch control street lighting that uses such as the passageway of units such as many offices, school, stair, lavatory, run into night when the sound is big on every side, as open variety show, set off firecrackers on every side, when thunder summer etc., use present sonic-opticalcon trolled switch just to be subjected to this class noise influence and open street lighting automatically, cause wasting of electric energy, lamp open frequency height also causes street lamp to damage easily or shortens its useful life.

The utility model content

Problem to be solved in the utility model is how a kind of anti-interference sonic-opticalcon trolled switch is provided, this anti-interference sonic-opticalcon trolled switch adopts audio frequency to import identification at interval, the interference free performance height, can effectively discern, get rid of external sound and disturb, when running into extraneous stronger audio signal and disturb, be difficult for opening by mistake and open street lighting, this product safety is reliable, appearance and installation method are the same with the existing sonic-opticalcon trolled switch of selling on the market.

The technical problem that the utility model proposed is to solve like this: construct a kind of anti-interference sonic-opticalcon trolled switch, it is characterized in that: comprise that power supply is supplied with, signal amplifies shaping, signal storage, pulse zero clearing and output control circuit; Power-supply circuit is made up of transformer, rectifier and filter capacitor; Signal amplification shaping circuit is made up of microphone, capacitance resistance ware, photoelectric tube, amplifying triode and time-base circuit IC1; Signal storage circuit is made up of double D trigger IC2, IC3 and peripheral resistance; The pulse clear circuit is made up of time-base circuit IC4 and peripheral capacitance resistance ware, diode, and clear terminal R1, the R2 of its output and memory IC 2 are connected; Output control circuit is made up of resistor R 8, triode BG2, controllable silicon BCR and indicator light LED1.

The beneficial effects of the utility model are: this anti-interference sonic-opticalcon trolled switch adopts audio frequency to import the opening and closing of RM control street lamp at interval, can effectively discern, get rid of external sound disturbs, when running into the interference of the stronger audio signal in the external world, as open variety show, set off firecrackers on every side, when thunder summer etc., be difficult for opening by mistake and open street lighting, not only played energy-saving illumination, but also improved street lamp useful life.

Description of drawings

Accompanying drawing 1 is a circuit structure diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, A, B, C point are three external binding posts of the utility model, and the A terminal is connected with the elementary end of transformer T, illuminating street lamp S one end, is connected on outward on arbitrary line of 220V lighting circuit; B terminal one end links to each other with the controllable silicon anode tap, the external illuminating lamp S other end; Public on C terminal and the elementary other end of transformer T, the circuit board " " end links to each other, and be connected on outward on another line of 220V lighting circuit.

The anti-interference sonic-opticalcon trolled switch of the utility model is after connecting on the circuit, the direct voltage of alternating current 220V voltage output+5V after 5W transformer T transformation, rectifier D1-D4 rectification, capacitor C 3 filtering amplifies circuit workings such as shaping, signal storage, pulse zero clearing and output control and uses for signal.By day, photoelectric tube BG ₀Under the illumination effect, triode BG1 base stage is in electronegative potential, and no matter silent is arranged, BG1 collector electrode no pulse trigger voltage, and BG2 emitter-base bandgap grading output does not have the control signal voltage triggered silicon controlled control utmost point, and street lamp does not work; At night, photoelectric tube BG ₀Be in cut-off state, triode BG1 base stage is in high potential, when the people sends for the first time sound near the anti-interference sonic-opticalcon trolled switch of street lamp S, behind the microphone M received audio signal, amplify through triode to the BG1 base stage through coupling capacitance C1, its collector voltage is added to the trigger end VTR of time-base circuit IC1, and the negative pulse that is exaggerated signal partly triggers the output V of IC1 ₀Export the C1 end that positive rectangular pulse is added to the double D trigger IC2a of just edge triggering, the pulse duration, the rising edge of this rectangular pulse overturn double D trigger IC2a, its output Q by R4 and C2 decision ₁Become low level " 0 " by high level " 1 ", these negative rank that jump are added to the C2 end of the double D trigger IC2b of just edge triggering, and IC2b is overturn, and promptly first audio signal is stored among the IC2a temporarily; If import second audio signal this moment again, IC2a overturns, its output Q ₁Become high level " 1 " by low level " 0 ", these rank that just jumping are added to the C2 end of the double D trigger IC2b of just edge triggering, make IC2b output Q2 that upset take place and promptly transfer high level " 1 " to by low level " 0 ", IC3a also overturns thereupon, and Q3 becomes high level " 1 " by low level " 0 "; Make triode BG2 conducting emitter-base bandgap grading output voltage through R8 output, trigger bidirectional triode thyristor BCR conducting, street lamp S is unlocked and lights, and the indicator light LED1 of display switch operating state is also lighted simultaneously; Time-delay control after the pulse clear circuit that time-base circuit IC4 forms is lighted as street lamp, regulator potentiometer RP can change the charging and the discharge time constant of capacitor C 4, thereby change the output duty of ratio, output positive pulse cycle adjustable range is t=1.1 * (R10+RP) * C4 promptly 1 minute to 6 minutes, the positive pulse cycle is adjusted according to infield time-delay needs, positive pulse is added to signal storage device IC2a, the R1 of IC2b, its circuit state of R2 clear terminal does not change, in case after the high level of this pulse, its trailing edge is with the storage signal zero clearing of IC2a and IC2b, the entire circuit state resets to before first signal comes, street lamp S extinguishes automatically, promptly realizes the time-delay illumination that street lamp can be lighted 1 to 6 minute.This anti-interference sonic-opticalcon trolled switch open street lamp need import at interval greater than T=1.1 * R4 * C2=0.3 second again less than 1 second audio signal, as the people walk step at interval sound usually in 0.45 to 0.78 second scope, be that the people walks that to satisfy this condition be easy to spontaneous sound, but the external interference signal that satisfies this requirement is uncommon.

Component parameters: R1-R12 selects the carbon film resistor of 1/8W for use; D1-D7 selects the IN4148 diode for use; C2, C3, C4 select withstand voltage 16V aluminium electrolytic capacitor for use, and C1 selects the 0.1u monolithic capacitor for use; Transformer T selects the miniature transformer of 220/5V5W for use; Bidirectional triode thyristor BCR selects BTA12 for use; IC1 and IC4 select a dual time base circuit NE556 altogether for use; IC2, IC3 just select for use and trigger integrated circuit 74LS74 along triggering two D types.

The utility model also can be made various flexible mode, more than by embodiment by accompanying drawing 1 illustrated embodiment, be that foregoing of the present utility model is done step detailed description, but this should be interpreted as that the scope of the theme that the utility model is above-mentioned only limits to described example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements and change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.

Claims

1, a kind of anti-interference sonic-opticalcon trolled switch is characterized in that: comprise that power supply is supplied with, signal amplifies shaping, signal storage, pulse zero clearing and output control circuit; Power-supply circuit is made up of transformer, rectifier and filter capacitor; Signal amplification shaping circuit is made up of microphone, capacitance resistance ware, photoelectric tube, amplifying triode and time-base circuit (IC1); Signal storage circuit is made up of double D trigger (IC2, IC3) and peripheral resistance; The pulse clear circuit is made up of time-base circuit (IC4) and peripheral capacitance resistance ware, diode, and the clear terminal (R1, R2) of its output and memory (IC2) is connected; Output control circuit is made up of resistor (R8), triode (BG2), controllable silicon (BCR) and indicator light (LED1).