CN204518186U

CN204518186U - A kind of emergency lighting circuit for lamp

Info

Publication number: CN204518186U
Application number: CN201520266371.4U
Authority: CN
Inventors: 陈莉莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-21
Filing date: 2015-04-21
Publication date: 2015-07-29
Anticipated expiration: 2025-04-21

Abstract

The utility model discloses a kind of emergency lighting circuit for lamp, comprise fuse FU, transformer T, rectifier bridge Q, chip U1, NAND gate F1 and triode VT1.The utility model emergency light circuit has two features, and one is automatically accumulators group to charge, sufficient automatic stop; Two is have intelligent judgment function, only have when civil power have a power failure suddenly and also surrounding environment light suddenly by when dying down by force, can intelligent decision to go out this be dark because power-off causes, light emergency light in time, intelligence degree is high, and sensitivity is strong.

Description

A kind of emergency lighting circuit for lamp

Technical field

The utility model relates to a kind of security protection facility, specifically a kind of emergency lighting circuit for lamp.

Background technology

In various disaster, fire is the most often, one of the major casualty threatening public security and social development the most at large, and the mankind can utilize fire and control, and are important symbols of civilization and progress.The mankind use the history of fire and the history of struggling with fire to be interpromoting relations in five elements together thus, and people while with fire, constantly sum up the rule that fire occurs, the harm reducing fire as much as possible and cause the mankind.

In today of modern science and technology development, people can utilize the method for various advanced person or science more detect fire or prevent, and have reached and have been nipped in the bud by fire.Such as, in electric fire disaster monitoring field, just relate to principles such as utilizing inductance and prevention and monitoring are made to fire.

And emergency light this be requisite a kind of instrument in fire fire-fighting, automatic controlling can be lacked by existing emergency light, a lot of product is all by judging whether that emergency light is opened in power-off, but many times powering-off state occurs in daytime, this situation does not need to open emergency light, and nobody goes to close again, profligacy electric energy, and poor sensitivity, intelligence degree is low.

Utility model content

The emergency lighting circuit for lamp that the purpose of this utility model is to provide a kind of meeting that powering-off state occurs after darkness just can be opened, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of emergency lighting circuit for lamp, comprise fuse FU, transformer T, rectifier bridge Q, chip U1, NAND gate F1 and triode VT1, described fuse FU one end connects 220V alternating current, fuse FU other end connection transformer T coil L1, the transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and pin 3 respectively, rectifier bridge Q pin 2 connects diode D1 positive pole and resistance R1 respectively, diode D1 negative pole connects electric capacity C1 respectively, resistance R3 and chip U1 pin 1, chip U2 pin 3 is connection transformer RP1 and diode D2 positive pole respectively, diode D2 negative pole contact resistance R4, described chip U1 pin 2 connects potentiometer RP1 slide plate, the potentiometer RP1 other end is the contact resistance R3 other end respectively, the electric capacity C1 other end, resistance R2, electric capacity C4, rectifier bridge Q pin 4, photo resistance R9, resistance R8, resistance R7, bulb M and batteries E negative pole, the electric capacity C4 other end is the contact resistance R2 other end respectively, the resistance R1 other end, NAND gate F1 input 1 and NAND gate F1 input 2, NAND gate output connects NAND gate F2 input 1, NAND gate F2 input 2 connects electric capacity C2 and the resistance R8 other end respectively, the electric capacity C2 other end connects the photo resistance R9 other end and resistance R10 respectively, the resistance R10 other end is the contact resistance R4 other end respectively, battery pack E positive pole, resistance R5 and triode VT1 emitter, the resistance R5 other end connects single-pole double-throw switch (SPDT) K pin 2, the single-pole double-throw switch (SPDT) K pin 3 connection bulb M other end, single-pole double-throw switch (SPDT) K pin 1 connecting triode VT1 collector electrode, triode VT1 base stage contact resistance R6, the resistance R6 other end connects NAND gate F4 output and NAND gate F3 input 1 respectively, NAND gate F4 input 2 is the contact resistance R7 other end and electric capacity C3 respectively, the electric capacity C3 other end connects NAND gate F3 output, NAND gate F3 input 2 connects NAND gate F2 output.

As further program of the utility model: described chip U1 model is LM317.

As the utility model further scheme: described batteries E capacity is 12V.

Compared with prior art, the beneficial effects of the utility model are: the utility model emergency light circuit has two features, and one is automatically accumulators group to charge, sufficient automatic stop; Two is have intelligent judgment function, only have when civil power have a power failure suddenly and also surrounding environment light suddenly by when dying down by force, can intelligent decision to go out this be dark because power-off causes, light emergency light in time, intelligence degree is high, and sensitivity is strong.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of emergency lighting circuit for lamp.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, a kind of emergency lighting circuit for lamp, comprise fuse FU, transformer T, rectifier bridge Q, chip U1, NAND gate F1 and triode VT1, fuse FU one end connects 220V alternating current, fuse FU other end connection transformer T coil L1, the transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and pin 3 respectively, rectifier bridge Q pin 2 connects diode D1 positive pole and resistance R1 respectively, diode D1 negative pole connects electric capacity C1 respectively, resistance R3 and chip U1 pin 1, chip U2 pin 3 is connection transformer RP1 and diode D2 positive pole respectively, diode D2 negative pole contact resistance R4, chip U1 pin 2 connects potentiometer RP1 slide plate, the potentiometer RP1 other end is the contact resistance R3 other end respectively, the electric capacity C1 other end, resistance R2, electric capacity C4, rectifier bridge Q pin 4, photo resistance R9, resistance R8, resistance R7, bulb M and batteries E negative pole, the electric capacity C4 other end is the contact resistance R2 other end respectively, the resistance R1 other end, NAND gate F1 input 1 and NAND gate F1 input 2, NAND gate output connects NAND gate F2 input 1, NAND gate F2 input 2 connects electric capacity C2 and the resistance R8 other end respectively, the electric capacity C2 other end connects the photo resistance R9 other end and resistance R10 respectively, the resistance R10 other end is the contact resistance R4 other end respectively, battery pack E positive pole, resistance R5 and triode VT1 emitter, the resistance R5 other end connects single-pole double-throw switch (SPDT) K pin 2, the single-pole double-throw switch (SPDT) K pin 3 connection bulb M other end, single-pole double-throw switch (SPDT) K pin 1 connecting triode VT1 collector electrode, triode VT1 base stage contact resistance R6, the resistance R6 other end connects NAND gate F4 output and NAND gate F3 input 1 respectively, NAND gate F4 input 2 is the contact resistance R7 other end and electric capacity C3 respectively, the electric capacity C3 other end connects NAND gate F3 output, NAND gate F3 input 2 connects NAND gate F2 output.

Chip U1 model is LM317.

Batteries E capacity is 12V.

Operation principle of the present utility model is: emergency light circuit is made up of storage battery constant voltage and current limiting floating charge loop and light control time-delay loop two parts, alternating voltage passes through transformer pressure-reducing, the direct voltage of 18V is obtained after rectifying and wave-filtering, by diode D2, resistance R4, batteries E and chip U1 forms constant voltage and current limiting floating charge uninterrupted power supply, can guarantee that storage battery is in full charge state at any time, the float charge voltage of 12V storage battery is 14.4V, chip U1 is connected into constant pressure source, resistance R4 can limit charging current, diode D2 can prevent storage battery back discharge after mains failure.

Resistance R1, resistance R2, electric capacity C1, diode D1, NAND gate F1 form ac voltage detection circuit, when alternating voltage is normal, output low level after F1 is anti-phase, when alternating voltage has a power failure, because there is diode D1 to isolate, after F1 is anti-phase, export high level.

Refer to Fig. 1, NAND gate F3, F4 and C3, R7 form monostable time delay circuit, and delay time is determined by the numerical value of C3 and R7, and the F4 output low level when delay circuit enters time delay monostable, make triode VT1 conducting, bulb M lights.The condition of work of single stabilization delay circuit is F2 output low level, make two inputs of F2 output low level so F2 must all input high levels, one of them input is used for monitoring alternating voltage, and only have during power failure and just can export high level, another input is light-operated test side.

Resistance R10, photo resistance R9, electric capacity C2 and resistance R8 forms light-operated testing circuit, be used for detecting the situation of change of surrounding environment light, when ambient light gradually by die down by force (from daytime to night) or change from weak to strong (from night to daytime) time, there is slowly change in the resistance of photo resistance R9, the voltage at its two ends is also slowly changed thereupon, isolation due to differential capacitance C2 makes R8 both end voltage be 0V, delay circuit is not triggered output high level, triode VT1 is driven not work, emergency light does not work, when ambient light changes from weak to strong suddenly (turn on light in the evening illumination), the resistance of photo resistance R9 becomes little by macromutation, a negative leaping voltage is produced at photo resistance R9 two ends, pass through C2, it is 0V that R8 makes R8 both end voltage still, emergency light does not work equally, only have when ambient light is suddenly by (power failure causes lights) when dying down by force, the resistance of photo resistance R9 becomes large by micromutation, a positive transition voltage is formed at photo resistance R9 two ends, by differential circuit C2, R8 makes R8 two ends produce a positive pulse, if be at this moment that alternating voltage disappears, another input of F2 is also high level, so F2 output low level, triggering single stabilization delay circuit works, F4 output low level VT1 conducting when delay circuit enters time delay, bulb M lights, after timing terminates, single stabilization delay circuit exits monostability, export high level, VT1 by, bulb extinguishes M.

Single-pole double-throw switch (SPDT) K is function diverter switch, has three positions: being placed in centre position is force to disconnect, and it is automatic for being placed in pin 1, and being placed in pin 2 is manual ON, can switch the position of K as required flexibly.

Claims

1. an emergency lighting circuit for lamp, comprise fuse FU, transformer T, rectifier bridge Q, chip U1, NAND gate F1 and triode VT1, it is characterized in that, described fuse FU one end connects 220V alternating current, fuse FU other end connection transformer T coil L1, the transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and pin 3 respectively, rectifier bridge Q pin 2 connects diode D1 positive pole and resistance R1 respectively, diode D1 negative pole connects electric capacity C1 respectively, resistance R3 and chip U1 pin 1, chip U2 pin 3 is connection transformer RP1 and diode D2 positive pole respectively, diode D2 negative pole contact resistance R4, described chip U1 pin 2 connects potentiometer RP1 slide plate, the potentiometer RP1 other end is the contact resistance R3 other end respectively, the electric capacity C1 other end, resistance R2, electric capacity C4, rectifier bridge Q pin 4, photo resistance R9, resistance R8, resistance R7, bulb M and batteries E negative pole, the electric capacity C4 other end is the contact resistance R2 other end respectively, the resistance R1 other end, NAND gate F1 input 1 and NAND gate F1 input 2, NAND gate output connects NAND gate F2 input 1, NAND gate F2 input 2 connects electric capacity C2 and the resistance R8 other end respectively, the electric capacity C2 other end connects the photo resistance R9 other end and resistance R10 respectively, the resistance R10 other end is the contact resistance R4 other end respectively, battery pack E positive pole, resistance R5 and triode VT1 emitter, the resistance R5 other end connects single-pole double-throw switch (SPDT) K pin 2, the single-pole double-throw switch (SPDT) K pin 3 connection bulb M other end, single-pole double-throw switch (SPDT) K pin 1 connecting triode VT1 collector electrode, triode VT1 base stage contact resistance R6, the resistance R6 other end connects NAND gate F4 output and NAND gate F3 input 1 respectively, NAND gate F4 input 2 is the contact resistance R7 other end and electric capacity C3 respectively, the electric capacity C3 other end connects NAND gate F3 output, NAND gate F3 input 2 connects NAND gate F2 output.

2. emergency lighting circuit for lamp according to claim 1, is characterized in that, described chip U1 model is LM317.

3. emergency lighting circuit for lamp according to claim 1, is characterized in that, described batteries E capacity is 12V.