CN205508051U

CN205508051U - Fire control safety precaution system

Info

Publication number: CN205508051U
Application number: CN201620317401.4U
Authority: CN
Inventors: 秦风元
Original assignee: Chongqing Three Gorges Vocational College
Current assignee: Chongqing Three Gorges Vocational College
Priority date: 2016-04-17
Filing date: 2016-04-17
Publication date: 2016-08-24
Anticipated expiration: 2026-04-17

Abstract

The utility model discloses a fire control safety precaution system, including rectifier bridge T, resistance R3, relay K and buzzer B, rectifier bridge T's port 1 and the 3 winding N2 that connect transformer W of rectifier bridge T's port, is relay K's contact K connected to transformer W's winding N1's one end 1 with the 220V alternating current, relay K's contact K 1 other end connection socket A, socket A's the other end connect transformer W's winding N1's the other end and the other end of 220V alternating current. The utility model discloses fire control safety precaution system simple structure, components and parts are few, have the temperature simultaneously and detect the function that detects with smog, prevent the lower hidden danger of single detection source sensitivity, are sending moreover still can start the air discharge fan when reporting to the police and take a breath, possibility that the reduction personnel stifle, therefore have with low costs, convenient to use and the manifold advantage of function.

Description

A kind of security against fire early warning system

Technical field

This utility model relates to a kind of fire-fighting system, specifically a kind of security against fire early warning system.

Background technology

Security against fire is the most important thing of modern architecture security protection, especially in the storehouse of some storage combustible and explosive articles Storehouse, workshop etc. are susceptible to the place of fire, and monitoring region can be monitored by fire protection warning device in real time, it is possible to has Imitate reduces casualties and the property loss that fire causes, and fire protection warning device in the market is varied, detecting element Mostly being single part, the smog that detection function singleness, such as some material send when burning is little, and smoke alarm is with regard to nothing Method is found out in time, and existing alarm can only send chimes of doom mostly, the poisonous and harmful that a lot of people can produce because of fire Gas and suffocate, therefore need to be improved.

Utility model content

The purpose of this utility model is to provide the security against fire early warning system of a kind of simple in construction, stable performance, on solving State the problem proposed in background technology.

For achieving the above object, the following technical scheme of this utility model offer:

A kind of security against fire early warning system, including rectifier bridge T, resistance R3, relay K and buzzer B, described rectifier bridge One end of the winding N1 of the winding N2, transformator W of the port 1 of T and the port 3 connection transformer W of rectifier bridge T connects The contact K-1 of relay K and 220V alternating current, the other end of the contact K-1 of relay K connects socket A, socket A The other end of the winding N1 of other end connection transformer W and the other end of 220V alternating current, the port 2 of rectifier bridge T connects Resistance R1, electric capacity C1, the anode of diode D1, the negative electrode of diode D2, relay K, buzzer B and audion The colelctor electrode of V1, the other end of electric capacity C1 connects resistance R2, resistance R3, resistance R4, resistance R5, resistance R7 and rectification The port 4 of bridge T, the negative electrode of diode D1 connects the other end of resistance R2, and the emitter stage of audion V1 connects resistance R3 The other end and the pin 3 of chip IC 1, the other end of resistance R1 connects the other end and the pin of chip IC 1 of resistance R4 1, the pin 4 of chip IC 1 connects the pin 3 of chip IC 2, and the pin 1 of chip IC 2 connects electric capacity C2, resistance R5 The other end and resistance R6, the pin 4 of chip IC 2 connects resistance R8, the other end of resistance R6 and the other end of electric capacity C2, The base stage of the other end connecting triode V2 of resistance R8, the emitter stage of audion V2 connects the other end of resistance R7, three poles The colelctor electrode of pipe V2 connects the other end of buzzer B, the other end of relay K and the anode of diode D2, described chip The model of IC1 and chip IC 2 is LM321.

As preferred version of the present utility model: described diode D1 is infrarede emitting diode, audion V1 is photosensitive three Pole is managed.

As preferred version of the present utility model: described resistance R1 is critesistor.

Compared with prior art, the beneficial effects of the utility model are: this utility model security against fire early warning system simple in construction, Components and parts are few, have the function of temperature detection and Smoke Detection simultaneously, prevent the hidden danger that single detection resources sensitivity is relatively low, and And also can start exhaust fan when sending warning and take a breath, the possibility that minimizing personnel suffocate, therefore there is low cost, use The convenient advantage with diverse in function.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of security against fire early warning system.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1, in this utility model embodiment, a kind of security against fire early warning system, including rectifier bridge T, resistance R3, Relay K and buzzer B, the port 1 of described rectifier bridge T and the winding N2 of the port 3 connection transformer W of rectifier bridge T, One end of the winding N1 of transformator W connects contact K-1 and 220V alternating current, the contact K-1 of relay K of relay K The other end connect the other end of winding N1 of other end connection transformer W of socket A, socket A and 220V alternating current The other end, the port 2 of rectifier bridge T connect resistance R1, electric capacity C1, the anode of diode D1, the negative electrode of diode D2, Relay K, buzzer B and the colelctor electrode of audion V1, the other end of electric capacity C1 connects resistance R2, resistance R3, resistance The port 4 of R4, resistance R5, resistance R7 and rectifier bridge T, the other end of the negative electrode connection resistance R2 of diode D1, three The emitter stage of pole pipe V1 connects the other end and the pin 3 of chip IC 1 of resistance R3, and the other end of resistance R1 connects resistance The other end of R4 and the pin 1 of chip IC 1, the pin 4 of chip IC 1 connects the pin 3 of chip IC 2, chip IC 2 Pin 1 connects electric capacity C2, the other end of resistance R5 and resistance R6, and the pin 4 of chip IC 2 connects resistance R8, resistance The other end of R6 and the other end of electric capacity C2, the base stage of the other end connecting triode V2 of resistance R8, audion V2 sends out Emitter-base bandgap grading connects the other end of resistance R7, the colelctor electrode of audion V2 connect the other end of buzzer B, relay K another End and the anode of diode D2, the model of described chip IC 1 and chip IC 2 is LM321.

Diode D1 is infrarede emitting diode, and audion V1 is phototriode.Resistance R1 is critesistor.

Operation principle of the present utility model is: light emitting diode diode D1 and phototriode V1 in circuit form smog Detection module, the infrared light that diode D1 sends under normal circumstances cannot be accepted by audion V1, when running into fire, meeting Producing substantial amounts of smog when indoor smog fills the air, due to the scattering process of smog, the scattered light of smog is received by V1, makes V1 turns on, and R2 both end voltage is relatively big, causes the current potential current potential higher than end of oppisite phase of IC1 in-phase input end, outfan 4 foot For high level, after IC2 amplifies, drive audion V2 conducting, simultaneously by output voltage through resistance R6 and electric capacity C2 Feeding back to the inverting input of chip IC 2, after audion V2 conducting, relay K and buzzer B obtain electric, on the one hand send Chimes of doom, simultaneously the contact K-1 adhesive of relay K, smog is discharged by air exhauster A, the danger that minimizing personnel suffocate because of smog Evil, if running into the less fire of smog that some special materials cause, although light detection module cannot reflect in time, but Critesistor R1 in circuit can change resistance according to ambient temperature, thus changes the electricity of chip IC 1 inverting input Pressure so that it is less than same input, then making it export high level, subsequent triggers step is identical with smog alarm, reaches many The purpose heavily protected.

Claims

1. a security against fire early warning system, including rectifier bridge T, resistance R3, relay K and buzzer B, its feature exists In, the port 1 of described rectifier bridge T and the winding N2 of the port 3 connection transformer W of rectifier bridge T, the winding of transformator W One end of N1 connects contact K-1 and the 220V alternating current of relay K, and the other end of the contact K-1 of relay K connects to be inserted Seat A, the other end of winding N1 of other end connection transformer W of socket A and the other end of 220V alternating current, rectifier bridge The port 2 of T connects resistance R1, electric capacity C1, the anode of diode D1, the negative electrode of diode D2, relay K, buzzing Device B and the colelctor electrode of audion V1, the other end of electric capacity C1 connect resistance R2, resistance R3, resistance R4, resistance R5, The port 4 of resistance R7 and rectifier bridge T, the negative electrode of diode D1 connects the other end of resistance R2, the transmitting of audion V1 Pole connects the other end and the pin 3 of chip IC 1 of resistance R3, and the other end of resistance R1 connects the other end and the core of resistance R4 The pin 1 of sheet IC1, the pin 4 of chip IC 1 connects the pin 3 of chip IC 2, and the pin 1 of chip IC 2 connects electric capacity C2, the other end of resistance R5 and resistance R6, the pin 4 of chip IC 2 connects resistance R8, the other end of resistance R6 and electricity Holding the other end of C2, the base stage of the other end connecting triode V2 of resistance R8, the emitter stage of audion V2 connects resistance R7 The other end, the colelctor electrode of audion V2 connects the other end of buzzer B, the other end of relay K and diode D2 Anode, the model of described chip IC 1 and chip IC 2 is LM321.

Security against fire early warning system the most according to claim 1, it is characterised in that described diode D1 is infrared Optical diode, audion V1 is phototriode.

Security against fire early warning system the most according to claim 1, it is characterised in that described resistance R1 is critesistor.