CN202176371U

CN202176371U - Fire prevention linkage device for automobiles

Info

Publication number: CN202176371U
Application number: CN2011202496431U
Authority: CN
Inventors: 傅哲龙
Original assignee: 何鸿珠
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2012-03-28
Anticipated expiration: 2021-07-15

Abstract

The utility model relates to the field of safety fire prevention, in particular to a fire prevention linkage device for automobiles, which comprises a smoke detection circuit, a single chip microcomputer control circuit, an exhaust fan driving circuit, a wireless transceiving circuit and a recommended standard (RS) 485 communication interface circuit. Signals acquired by the smoke detection circuit are sent out by the single chip microcomputer control circuit to the exhaust fan driving circuit, the wireless transceiving circuit and the RS 485 communication interface circuit. When fire accidents of vehicles happen in tunnels, the single chip microcomputer control circuit receives signals acquired by smoke sensors and sends out driving signals to start an exhaust fan, and a personal computer (PC) display screen is driven by a system to display traffic accidents to remind vehicles and people to pay attention. Simultaneously, a wireless module gives alarm to a receiving module, and the purpose of wireless alarm is achieved.

Description

Automobile fire prevention linkage

Technical field

The utility model relates to the fire safety field, particularly be a kind of automobile fire prevention linkage.

Background technology

Freeway tunnel is numerous, but traffic accident appears in vehicle pass-through, and automobile is easy to the meeting breaking out of fire, and existing fire monitoring device does not have the function that wireless transmission is reported to the police, and its detecting function is single, can't in time detect fire signal.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of automobile fire prevention linkage is provided.

The utility model solves the technical scheme that its technical problem adopted: automobile fire prevention linkage; Comprise smoke detection circuit, single chip machine controlling circuit, exhaust blower drive circuit, wireless transceiver circuit and RS485 communication interface circuit, the signal of said smoke detection circuit collection exports exhaust blower drive circuit, wireless transceiver circuit and RS485 communication interface circuit to through single chip machine controlling circuit control.

Said smoke detection circuit by the output of gas sensor Smoke Sensor U1 connect two adjustable resistance W1, W2 constitutes.

Said wireless transceiver circuit is made up of FDD-5 transmitter module IC3, JDD-5 receiver module IC4, external LED 1 and the loudspeaker Y of JDD-5 receiver module IC4.

Said RS485 communication interface circuit is made up of through PC transmitting data information to display screen SN75176 communication interface chip IC2.

Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: when vehicle in the tunnel during breaking out of fire accident; Single-chip Controlling receives the signal that cigarette propagated sensation device is gathered, and sends to drive the air draft of signal enabling induced-draft fan, and shows that through system drive PC display screen traffic accident prompting vehicle crew takes care; Report to the police to receiver module through wireless module simultaneously, reach the purpose of radio alarming.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model.

The specific embodiment

Like Fig. 1, shown in Figure 2; The automobile fire prevention linkage of the utility model; Comprise smoke detection circuit 1, single chip machine controlling circuit 2, exhaust blower drive circuit 3, wireless transceiver circuit 4 and RS485 communication interface circuit 5, the signal that said smoke detection circuit 1 is gathered exports exhaust blower drive circuit 3, wireless transceiver circuit 4 and RS485 communication interface circuit 5 to through single chip machine controlling circuit 2 controls.

Said smoke detection circuit 1 by the output of gas sensor Smoke Sensor U1 connect two adjustable resistance W1, W2 constitutes, U1 is installed in vehicle to run both sides, tunnel, when occurrence of traffic accident; Automobile catches fire, and when gas sensor Smoke Sensor U1 surface absorbed near smog or imflammable gas, its A, A1 interpolar resistance reduced; At this moment owing to adjustable resistance W1, the dividing potential drop of W2 and A, A1 electrode resistance descends the current potential of Node B, and C point current potential also and then descends; Be low level this moment; The I/O end that this moment, single-chip microcomputer IC1 detected its 34th pin is low level state, through the output of single-chip microcomputer IC1 internal judgment, breaking out of fire is described.The first via through resistance R 2 current limlitings, makes triode VT1 conducting by the 2nd pin output high level of single-chip microcomputer IC1, the relay J adhesive, and also adhesive of contactor KM promotes exhaust blower work, and tunnel smog is dispelled; The 1st, 2,3,4 pin of secondary route SN75176 communication interface chip IC2 and the 10th, 11,25 pin of single-chip microcomputer IC1, resistance R 3 etc. are formed RS485 communication interface circuit 5; Transfer two buses to by the 6th, 7 pin of SN75176 communication interface chip IC2 and be connected to PC; Send data message by single-chip microcomputer IC1 to SN75176 communication interface chip IC2; Be connected to and upload to PC through system bus; Promote display screen and show " tunnel is occurrence of traffic accident ", please take care by vehicle, thereby guarantee traffic safety.Third Road through resistance R 4 current limlitings, makes triode Q1 conducting by the 28th pin I/O mouth output low-potential signal of single-chip microcomputer IC1, is input to the 2nd pin of FDD-5 transmitter module IC3, and delivers to its 3rd pin CP modulation signal input end, and the high-frequency signal of emission is modulated.Antenna TX promptly launches modulated frequency electromagnetic waves to JDD-5 receiver module IC4.The 4th pin CPA audio signal output end of JDD-5 receiver module IC4 directly drives common electrical dynamic formula loudspeaker Y and sends chimes of doom; Its 2nd pin data output end output high level makes LED1 get electroluminescence simultaneously; Expression receives the alarm signal of extension set, explains traffic takes place in the tunnel, should stop in emergency.

An above-described preferred embodiment that is merely the utility model can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. automobile fire prevention linkage; It is characterized in that: comprise smoke detection circuit (1), single chip machine controlling circuit (2), exhaust blower drive circuit (3), wireless transceiver circuit (4) and RS485 communication interface circuit (5), the signal that said smoke detection circuit (1) is gathered exports exhaust blower drive circuit (3), wireless transceiver circuit (4) and RS485 communication interface circuit (5) to through single chip machine controlling circuit (2) control.

2. automobile according to claim 1 fire prevention linkage is characterized in that: said smoke detection circuit (1) by the output of gas sensor Smoke Sensor U1 connect two adjustable resistance W1, W2 constitutes.

3. automobile fire prevention linkage according to claim 1, it is characterized in that: said wireless transceiver circuit (4) is made up of FDD-5 transmitter module IC3, JDD-5 receiver module IC4, external LED 1 and the loudspeaker Y of JDD-5 receiver module IC4.

4. automobile fire prevention linkage according to claim 1, it is characterized in that: said RS485 communication interface circuit (5) is made up of through PC transmitting data information to display screen SN75176 communication interface chip IC2.