CN204884038U

CN204884038U - Fire -fighting alarm

Info

Publication number: CN204884038U
Application number: CN201520540687.8U
Authority: CN
Inventors: 胡红生
Original assignee: Chongqing Zhiyixin Electronic Technology Co Ltd
Current assignee: Chongqing Zhiyixin Electronic Technology Co Ltd
Priority date: 2015-07-24
Filing date: 2015-07-24
Publication date: 2015-12-16
Anticipated expiration: 2025-07-24

Abstract

The application discloses a can realize automatic alarm's fire -fighting alarm when the conflagration dangerous situation takes place, including microcontroller, temperature detection module, smog detection module, voice alarm module and light alarm module, temperature detection module and smog detection module are connected the microcontroller 0 who is used for microcontroller with the microcontroller electricity respectively, and voice alarm module and light alarm module are connected the microcontroller 5 who is used for microcontroller with the microcontroller electricity respectively, temperature detection module adopt a plurality of parallelly connected digital temperature sensor multiple spot distribution temperature measurements, smog detection module adopt a plurality of parallelly connected smoke transducer multiple spots to distribute to detect smog concentration.

Description

Fire protection warning device

Technical field

The utility model relates to fire prevention, is specifically related to fire protection warning device.

Background technology

Security against fire and our everyone security of the lives and property closely bound up, fire fighting device construction is also more and more subject to people's attention.At present, the fire control equipment generally used comprises flame snuffer, hydrant and break-in tool etc., and the emergency system of employing comprises fire alarm system, automatic sprinkler system, smoke control system, emergency evacuation system etc.Above-mentioned fire alarm system comprises fire detector, alarm button, alarm and controller, what wherein alarm button adopted usually is manual fire alarm call point, namely need manually to press and could realize reporting to the police, Problems existing cannot be reported to the police in the very first time of breaking out of fire, this can cause the delayed of crowd evacuation, and and then affects follow-up disaster relief work.

Utility model content

The utility model provides a kind of fire protection warning device that can realize automatic alarm when fire dangerous situation occurs.

This programme is as follows: fire protection warning device, comprise microcontroller, temperature detecting module, Smoke Detection module, audible alarm module and light warning module, temperature detecting module and Smoke Detection module are electrically connected the signal being used for microcontroller respectively and input with microcontroller, audible alarm module and light warning module are electrically connected the signal being used for microcontroller respectively and export with microcontroller; Described temperature detecting module adopts the digital temperature sensor multiple spot distribution thermometric of multiple parallel connection, and described Smoke Detection module adopts the smoke transducer multiple spot distribution of multiple parallel connection to detect smokescope.

The beneficial effects of the utility model: after starting fire protection warning device; by the temperature value under temperature detecting module at any time testing environment; by the smokescope value under Smoke Detection module at any time testing environment; once time temperature value and/or smokescope value exceed the limit value under home; control audible alarm module and the light warning module very first time are carried out automatic alarm by microcontroller; and the smoke transducer of the digital temperature sensor of temperature detecting module and Smoke Detection module is all furnished with multiple, the detection to multiple place can be realized simultaneously.

Further, also comprise fire-fighting control circuit, described fire-fighting control circuit comprises a triode Q2, diode D2 and the second relay, the base stage of triode Q2 connects the output terminal of microcontroller by resistance R7, the grounded emitter of triode Q2, the collector of triode Q2 connects the positive pole of diode D2, and diode D2 is in parallel with described second relay, the negative pole of diode D2 is all connected power supply with the second relay, on the loop of the contact access fire-fighting circuit of described second relay.By arranging fire-fighting control circuit, when fire occurs, the automatic connection of fire-fighting circuit can be realized.

Further, digital temperature sensor is digital temperature sensor DS18B20.Traditional semiconductor temperature sensor adopts the thermistor of negative temperature coefficient usually, its simulating signal exported has to pass through after A/D is converted to digital signal and could input single-chip microcomputer, therefore structure is more complicated, production cost is higher, and negative tempperature coefficient thermistor reliability is relatively poor, adopt digital temperature sensor DS18B20, circuit structure is simple, and reliability is high.

Further, light warning module adopts the light emitting diode two-stage of yellow and red two kinds of colors to report to the police respectively.When only detecting that smokescope exceedes limit value, the bright orange colored lights of microprocessor controls, is namely in alert status, if detect simultaneously, smokescope exceeds limit value and temperature also exceedes limit value time, then microprocessor controls azarin colored lights, namely represents that fire occurs, realizes two-stage and report to the police.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of the utility model embodiment.

Fig. 2 is the circuit diagram of the microcontroller of fire protection warning device, temperature detecting module and light warning module.

Fig. 3 is the circuit diagram of Smoke Detection module.

Fig. 4 is the circuit diagram of audible alarm module.

Fig. 5 is the schematic diagram of fire-fighting control circuit.

Embodiment

Below by embodiment, the utility model is described in further detail:

Fire protection warning device as shown in Figure 1, comprise microcontroller, temperature detecting module, Smoke Detection module, light warning module, audible alarm module and fire-fighting control circuit, temperature detecting module, Smoke Detection module, light warning module, audible alarm module and fire-fighting control circuit are electrically connected with microcontroller respectively.The temperature information detected and smokescope information are passed to microcontroller by temperature detecting module and Smoke Detection module respectively, microcontroller for controlling visual alarm and sound alarm equipment alarm, simultaneously for controlling the break-make of fire-fighting control circuit.

The circuit diagram of the microcontroller of fire protection warning device as shown in Figure 2, temperature detecting module and light warning module, the STC12C2052AD single-chip microcomputer of in-system programmable components selected by microcontroller, this single-chip microcomputer inside carries 8 tunnel 8 precision A/D converters, without the need to additional A/D change-over circuit, can hardware circuit be simplified, reduce production cost, and the work of this single-chip microcomputer Width funtion, antijamming capability is strong, can in power environment more lower stable work.

Temperature detecting module adopts digital temperature sensor DS18B20, the devices such as semiconductor Thermosensor, A/D converter, storer are integrated on circuit chip by this sensor, and its signal exports the digital value adopting the direct output temperature signal of unibus structure, the data transfer mode of this unibus adds the transmission range of signal, improve antijamming capability, temperature more accurately and reliably.And traditional semiconductor temperature sensor adopts the thermistor of negative temperature coefficient usually, its simulating signal exported has to pass through after A/D is converted to digital signal and could input single-chip microcomputer, therefore this temperature detecting module structure is more complicated, production cost is higher, and negative tempperature coefficient thermistor reliability is relatively poor.

Adopt multiple digital temperature sensor DS18B20 to be connected in parallel in bus structure and realize multiple spot distribution thermometric, the present embodiment preferably four.As shown in Figure 2, four digital temperature sensor DS18B20s and the equal common source VCC of STC12C2052AD single-chip microcomputer, pin 1 all ground connection of four digital temperature sensor DS18B20s, between four pins 2 of power supply VCC and four digital temperature sensor DS18B20, be connected to resistance R2, R3, R4 and R5, the output of four pins 2 of four digital temperature sensor DS18B20s accesses four input pins 16,17,18 and 19 of STC12C2052AD single-chip microcomputer respectively.

Pin X1 with X2 of STC12C2052AD single-chip microcomputer is connected external crystal-controlled oscillation, the GND pin ground connection of STC12C2052AD single-chip microcomputer, the RSD pin of STC12C2052AD single-chip microcomputer is connected to two resistance R1 in parallel and electric capacity C3, electric capacity C3 connect power supply VCC, resistance R1 ground connection.The output pin 2,3,6 of STC12C2052AD single-chip microcomputer connects the pin 12,11,14 of latch SN74LS595N, the pin VCC of latch SN74LS595N is all connected external power source VCC with pin 10, the pin GND of latch SN74LS595N and pin 13 all ground connection, the pin 15,1,2,3,4,5 of latch SN74LS595N connects the positive pole of six light emitting diodes respectively by resistance R9, R10, R11, R12, R13, R14, the equal ground connection of negative pole of six light emitting diodes.Six light emitting diodes described in the present embodiment, wherein three is the light emitting diode of Yellow light-emitting low temperature, three light emitting diodes for glowing.

As shown in Figure 3 be the circuit diagram of Smoke Detection module, Smoke Detection module adopts semiconductor smoke transducer MQ-2, semiconductor smoke transducer MQ-2 is all higher to the sensitivity of liquefied gas, propane, hydrogen, rock gas and other inflammable gass, semiconductor smoke transducer MQ-2 its conductivity in the environment of clean air is lower, along with the increase of combustable gas concentration in air ambient, the conductivity of semiconductor smoke transducer MQ-2, also along with increase, utilizes this characteristic can detect the concentration change information of inflammable gas in air easily.Semiconductor smoke transducer MQ-2 has good anti-interference, accurately can get rid of the interfere information of irritant non-combustible smog, and the stable performance that works long hours.The mode of multiple semiconductor smoke transducer MQ-2 parallel connection is adopted to realize detecting the smokescope of multiple spot, the present embodiment preferably four, the output of four semiconductor smoke transducer MQ-2 connects the input pin 13,12,11,10 of STC12C2052AD single-chip microcomputer respectively.

Be the circuit diagram of audible alarm module as shown in Figure 4, the output pin 9 of STC12C2052AD single-chip microcomputer connects the base stage of a triode Q1 by resistance R6, the grounded emitter of triode Q1, the collector of triode Q1 connects the positive pole of a diode D1, the circuit of this diode D1 is parallel with one first relay, and the negative pole of described diode D1 is all connected 12V power supply with the first relay.The contact K1 of described first relay and a loudspeaker in series.

The principle of work of audible alarm module is: under home, output pin 9 no signal of STC12C2052AD single-chip microcomputer exports, triode Q1 is in cut-off state, on first relay, no current flows through, the contact K1 of the first relay is in off-state, loudspeaker is not reported to the police, if detect that smokescope and temperature all exceed limit value by Smoke Detection module and temperature detecting module, then the output pin 9 of STC12C2052AD single-chip microcomputer outputs signal, make triode Q1 conducting, first relay obtains electric, the contact K1 adhesive of the first relay, loudspeaker sends alarm sound, prompting is reported to the police.

The schematic diagram of fire-fighting control circuit as shown in Figure 5, the output pin 8 of STC12C2052AD single-chip microcomputer connects the base stage of a triode Q2 by resistance R7, the grounded emitter of triode Q2, the collector of triode Q2 connects the positive pole of a diode D2, the circuit of this diode D2 is parallel with one second relay, and the negative pole of above-mentioned diode D2 is all connected 12V power supply with the second relay.The contact K2 of the second relay is connected on the loop of fire-fighting circuit.

The principle of work of the present embodiment fire protection warning device and the principle of work of audible alarm module similar, do not repeat them here.

After fire protection warning device starts, microcontroller is constantly by the temperature under temperature detecting module and Smoke Detection module detection current environment and smokescope information, then compare with the temperature limit under predetermined home and smokescope limit value, if the smokescope under current environment exceedes limit value, so microcontroller prediction may have fire dangerous situation and control glassy yellow alarm lamp, if current smokescope exceedes limit value, and current environment temperature is higher and temperature variation is very fast, microcontroller can be judged as having there occurs fire dangerous situation, microprocessor controls shiny red pilot lamp is reported to the police, make the contact K1 of the first relay that loudspeaker is connected engage simultaneously, loudspeaker is reported to the police, the contact K2 of the second relay on fire-fighting circuit loop engages, automatic startup fire-fighting circuit, realize fire-fighting to control.

Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.

Claims

1. fire protection warning device, it is characterized in that, comprise microcontroller, temperature detecting module, Smoke Detection module, audible alarm module and light warning module, temperature detecting module and Smoke Detection module are electrically connected the signal being used for microcontroller respectively and input with microcontroller, audible alarm module and light warning module are electrically connected the signal being used for microcontroller respectively and export with microcontroller; Described temperature detecting module adopts the digital temperature sensor multiple spot distribution thermometric of multiple parallel connection, and described Smoke Detection module adopts the smoke transducer multiple spot distribution of multiple parallel connection to detect smokescope.

2. fire protection warning device according to claim 1, it is characterized in that, also comprise fire-fighting control circuit, described fire-fighting control circuit comprises a triode Q2, diode D2 and the second relay, the base stage of triode Q2 connects the output terminal of microcontroller by resistance R7, the grounded emitter of triode Q2, the collector of triode Q2 connects the positive pole of diode D2, diode D2 is in parallel with described second relay, the negative pole of diode D2 is all connected power supply with the second relay, on the loop of the contact access fire-fighting circuit of described second relay.

3. fire protection warning device according to claim 1, is characterized in that, described digital temperature sensor is digital temperature sensor DS18B20.

4. fire protection warning device according to claim 1, is characterized in that, described light warning module adopts the light emitting diode two-stage of yellow and red two kinds of colors to report to the police respectively.