CN201830518U

CN201830518U - Automatic sound and light controlled switch

Info

Publication number: CN201830518U
Application number: CN2010205510008U
Authority: CN
Inventors: 陈清尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-08
Filing date: 2010-10-08
Publication date: 2011-05-11
Anticipated expiration: 2020-10-08

Abstract

The utility model discloses an automatic sound and light controlled switch which is characterized by comprising a power supplying circuit, a signal amplifying and shaping circuit, a signal storing circuit, a pulse clearing circuit and an output control circuit, wherein the power supplying circuit comprises a transformer, a rectifier and a filter capacitor; the signal amplifying and shaping circuit comprises a microphone, a capacitance resisting component, a phototube, an amplifying triode and a time-based integrated circuit IC1; the signal storing circuit comprises a dual D trigger integrated circuit IC2, a dual D trigger integrated circuit IC3 and a peripheral resistor; the pulse clearing circuit comprises a time-based integrated circuit IC4, a peripheral capacitance resisting component and a diode, and an output end of the pulse clearing circuit is connected with the clearing end R1 and the clearing end R2 of a memory IC2; and the output control circuit comprises a resistor R8, a triode BG2, a thyristor BCR and an indicating lamp LED1. The automatic sound and light controlled switch is suitable for being arranged in places such as staircases, corridors, toilets and the like in various environments for controlling street lamps; and the automatic sound and light controlled switch is safe and reliable, is not influenced by environment or noise, and is convenient to install.

Description

Acousto-optic control automatic switch

Technical field

The utility model relates to electronic equipments, is specifically related to acousto-optic control automatic 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 acousto-optic control automatic switch is provided, this acousto-optic control automatic 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, constructs a kind of acousto-optic control automatic 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 integrated circuit (IC1); Microphone (M) end connects the negative pole of diode (D5), the other end is connected with capacitor (C5) input, capacitor (C5) output is connected with the base stage of light-operated triode (BG0) collector electrode, triode (BG1), and the collector electrode of triode (BG1) connects integrated circuit (IC1) pin (VTR) end; Signal storage circuit is made up of integrated circuit (IC2a, IC2b, IC3a) and peripheral resistance; Pin (C1) end of integrated circuit (IC2a) connects integrated circuit (IC1) pin (V ₀) end, its pin (Q1) end connect integrated circuit (IC2b) pin (C2) end, integrated circuit (IC2b) pin (Q2) end connects integrated circuit (IC3a) pin (C3) end, and integrated circuit (IC3a) pin (Q3) end connects the base stage of triode (BB2) through resistance (R8); The pulse clear circuit is formed integrated circuit (IC4) pin (V by integrated circuit (IC4) and peripheral capacitance resistance ware, diode ₀) end is held with integrated circuit (IC2a) pin (R1) respectively, integrated circuit (IC2b) pin (R2) end is connected; Output control circuit is made up of resistor (R8), triode (BG2), controllable silicon (BCR) and indicator light (LED1), the control utmost point of controllable silicon (BCR), anode connect the emitter and lamp (S) binding post (B) of triode (BG2) respectively, the negative electrode of controllable silicon (BCR) connects external power supply binding post (C), and indicator light (LED1) and resistance (R9) are connected in series between triode (BG1) emitter and the external power supply binding post (C).

The beneficial effects of the utility model are: this acousto-optic control automatic 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 utility model acousto-optic control automatic switch 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, light-operated triode BG0 is under the illumination effect, and triode BG1 base stage is in electronegative potential, no matter silent is arranged, triode BG1 collector electrode no pulse trigger voltage, triode BG2 emitter-base bandgap grading output do not have the control signal voltage triggered silicon controlled control utmost point, and street lamp does not work; At night, light-operated triode BG0 is in cut-off state, triode BG1 base stage is in high potential, when the people sends for the first time sound near the acousto-optic control automatic 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 integrated circuit IC circuit 1, the output V0 that the negative pulse that is exaggerated signal partly triggers integrated circuit (IC) 1 exports positive rectangular pulse and just is added to along the C1 end of the integrated circuit (IC) 2a of the double D trigger that triggers, pulse duration is by resistance R 4 and capacitor C 2 decisions, the rising edge of this rectangular pulse overturns the integrated circuit (IC) 2a of double D trigger, its output

Become 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

Become 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 acousto-optic control automatic 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. an acousto-optic control automatic 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 integrated circuit (IC1); Microphone (M) end connects the negative pole of diode (D5), the other end is connected with capacitor (C5) input, capacitor (C5) output is connected with the base stage of light-operated triode (BG0) collector electrode, triode (BG1), and the collector electrode of triode (BG1) connects integrated circuit (IC1) pin (VTR) end;

Signal storage circuit is made up of integrated circuit (IC2a, IC2b, IC3a) and peripheral resistance; Pin (C1) end of integrated circuit (IC2a) connects integrated circuit (IC1) pin (V ₀) end, its pin (Q1) end connect integrated circuit (IC2b) pin (C2) end, integrated circuit (IC2b) pin (Q2) end connects integrated circuit (IC3a) pin (C3) end, and integrated circuit (IC3a) pin (Q3) end connects the base stage of triode (BB2) through resistance (R8);

The pulse clear circuit is formed integrated circuit (IC4) pin (V by integrated circuit (IC4) and peripheral capacitance resistance ware, diode ₀) end is held with integrated circuit (IC2a) pin (R1) respectively, integrated circuit (IC2b) pin (R2) end is connected;

Output control circuit is made up of resistor (R8), triode (BG2), controllable silicon (BCR) and indicator light (LED1), the control utmost point of controllable silicon (BCR), anode connect the emitter and lamp (S) binding post (B) of triode (BG2) respectively, the negative electrode of controllable silicon (BCR) connects external power supply binding post (C), and indicator light (LED1) and resistance (R9) are connected in series between triode (BG1) emitter and the external power supply binding post (C).