CN2061311U - Fully automatic fire alarm - Google Patents

Abstract

The utility model belongs to a monitoring and alarm device for earlyr fire, composed of a fire detector, a start holding circuit, an alarm signal circuit, an alarm signal output circuit, a timing circuit, a flash signal circuit, an output interface, a fault starting circuit and a fault acoustic-optic display circuit. A smoke sensation, light sensation and constant temperature fire detector for monitoring the fire gives a dynamic connection point, so that the whole machine can be started to work to output alarm which is sent to a telephone alarm device, and accordingly, the distant transmission of the alarm signal can be realized. The utility model which is controlled by an integrated circuit and a relay has the advantages of stable performance, safe reliability, perfect function, convenient use, etc.

Description

Fully automatic fire alarm

The utility model belongs to the monitoring, alarming equipment of initial fire disaster.

Usually the warning of the condition of a fire is all carried out reaching internal institution more among a small circle, found that the condition of a fire can only inform with siren sound or warning lamp,, develop as one pleases, bring very big harm can for people's life and property if people in time do not find for a certain reason.If it is found that alert, no matter take any type of alarm notice relevant department, all, delayed timely processing to alert to cutting the alert regular hour delay that has, lost section police's quality time, cause unnecessary loss.

The utility model is at the shortcoming of above-mentioned existence, and it is timely to provide a kind of warning, accurately fire alarm installation.

The technical solution of the utility model is to realize like this, it is by fire detector, start holding circuit, the alarm signal circuit, the alarm signal output circuit, circuit clocks, the flashing signal circuit, output interface, fault initiating circuit and fault sound and light show circuit constitute, be used for the sense cigarette that the condition of a fire monitors, sensitization, the normally opened contact signal that the temp.-determined type fire detector provides (or manual enabling signal), the relay adhesive that starts holding circuit is started and maintenance, complete machine gets, the loudspeaker of alarm signal circuit produce sound equipment, and after sending the alarm signal output circuit to amplify, drive the Yang Sheng device to the outdoor sound equipment that sends, the clock relay adhesive of circuit, timer stops walking, meanwhile, the flashing signal circuit produces oscillator signal and drives the actuating of relay, and the control pilot lamp glitters, then, through interface output normally opened contact signal, send telephone alarm device, realize the long-distance transmissions of alerting signal.When open circuit fault took place, the transistor of fault-signal start-up circuit output high level sent the transistor of fault sound and light show circuit to drive the relay adhesive, light emitting diode is lighted indicated the broken string position and send sound equipment.

Formation of the present utility model is owing to adopt integrated circuit and relay control, make its stable performance, safe and reliable, perfect in shape and function, easy to use, cost is low, popularizes easily, and its monitoring range is big, highly sensitive, when disconnection fault occurring, can send automatically and the diverse knocking noise light signal of fire alarm, also have memory and send the function of fire alarm signal time for the first time.

Description of drawings:

Fig. 1 is a block scheme of the present utility model.

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

Fig. 3 is temp.-determined type fire detector circuit theory diagrams of the present utility model.

Fig. 4 is smoke fire detector circuit theory diagrams of the present utility model.

Fig. 5 is photosensitizing type fire detector circuit theory diagrams of the present utility model.

Fig. 6 is combination type fire detector circuit theory diagrams of the present utility model.

Fig. 7 is a front-panel structure synoptic diagram of the present utility model.

Temp.-determined type fire detection device basic function of the present utility model is, when environment temperature reaches design temperature, starts warning device immediately, and signal gives the alarm.It is applicable to the occasion that flue dust is big, light is stronger, can not report by mistake, and its circuit is former in Fig. 3, and it is by adjustable mercury conductivity meter G, triode BG6-BG8, resistance R ₂₁-R ₂₄, capacitor C ₁₉-C ₂₀Alarm lamp D _AWith starter relay J ^AForm.The 6V power supply is gone into from a, b termination, and c, d connect the input end that starts holding circuit.If breaking out of fire, environment temperature is inevitable to rise rapidly, when reaching the design temperature of mercury conductivity meter G, mercury meter G provides electric signal, make transistor BG6 base stage by clamped be 0, transfer sealing to by conducting immediately, its collector rises to noble potential, force transistor BG7, BG8 to transfer conducting to, promptly after amplifying, drive relay J by sealing ^AProduce the normally opened contact signal.Consequently: J ^A _K-1Go to 2, alarm lamp D by 1 _AIgnite, represent this detector place environment breaking out of fire; J ^A _K-2Also go to 2 from 1 simultaneously, provide initiating signal to starting holding circuit, send alarm of fire by control line.

The sense cigarette probe of smoke fire detector, having adopted model is gas-electric transition element of QM-N88, its outstanding characteristics are not to be afraid of flying dust and high light interference, so can be used for various smokeless occasions, circuit theory is referring to Fig. 4, it is by gas-electric transition element QM-N88, triode BG9, BG10, resistance R ₂₅-R ₂₉, potentiometer RW, capacitor C ₂₁-C ₂₃Alarm lamp D _BWith starter relay J ^BForm.The 6V power supply is gone into by a, b termination, and c, d termination start the input end of holding circuit.Sensitivity is set up by potentiometer RW, work as breaking out of fire, make finite concentration is arranged in the environment (when＞100PPM) smog produces, the measurement electrode resistance of QM-N88 descends significantly, and intrinsic standoff ratio changes the electric signal that provides, and triode BG9 emitter junction voltage is risen, when surpassing the conducting current potential, triode BG9 transfers conducting to by sealing, and its collector rises to noble potential, through resistance R ₂₇, R ₂₈After the dividing potential drop, make the BG10 conducting, after amplifying, drive relay J ^BProduce the normally opened contact signal, consequently: J ^B _K-1Go to 2 by 1, fire indicating lamp DB is bright, J ^B _K-2Also go to 2, provide initiating signal to starting holding circuit, send alarm of fire by control line.

Optical flame fire detector is when breaking out of fire has the flame infrared radiation, signal output starting warning device is arranged, its feature is that response is fast, monitoring range is big, is applicable to no sunlight direct projection, the occasion that light is darker, its circuit theory is seen Fig. 5, it is by infrared photodiode (infrared receiving tube) DG1-3, triode BG11-BG13, resistance R ₃₀-R ₃₅Capacitor C ₂₄-C ₂₅, alarm lamp DC and starter relay J ^CForm.The 6V power supply is gone into from a, b termination.C, d termination start the input end of holding circuit, when fire takes place, infrared radiation in the flame must make one or more in the middle of the infrared receiving tube DG1-3, and resistance descends, and the bias current of BG11 is increased, when reaching enough value, BG11 is inevitable to transfer conducting to by ending, and after BG12 was anti-phase, BG13 transferred conducting to, the electric signal that provides drives relay J after amplifying ^CProduce the normally opened contact signal, consequently: J ^C _K-1Go to 2, alarm lamp DC is bright, J ^C _K-2Go to 2, provide initiating signal to fire alarm installation, send alarm of fire by control line.Also can adopt combination type fire detector to come the condition of a fire is monitored, its circuit structure is, with the silver-colored conductivity meter G of fire, gas-electric transition element QM-N88 and infrared photodiode DG respectively with model be CD4078's or a door IC input end Q join, or the triode BG14 of door IC output terminal K and collector connection relay J joins.(referring to Fig. 6).

Startup holding circuit of the present utility model is starter relay J thus ¹-J ³For critical piece constitutes, receive three surveillance zone and provide the normally opened contact signal, (see figure 2) is because the route protection resistance R ₉(R ₁₀Or R11) and this surveillance zone starter relay J ¹(J ²Or J ³) connect and inserted the 12V power supply, after both dividing potential drops, J ¹The undertension at two ends is to make it starting, so whole device is on the alert.

When the condition of a fire occurring, when initiating signal output is arranged, the c among the figure, the inevitable short circuit in d two ends, 12 volts of whole relay J that are added on of power supply ¹(J ²Or J ³), make it the adhesive starting, cause J ¹ _K-1Go to 2 by 1, by cancel switch H ⁰, make J ¹Self-insurance; J ¹ _K-2Also going to 2, is 7805 three terminal regulator IC5 by model, for being that the four tones of standard Chinese pronunciation ic chip 2 of KD9561 provides 5V power supply for the alarm signal circuit that critical piece constitutes with the model, by loudspeaker Y ₁In indoor alarm of fire of sending the simulation police whistle sound, and simultaneously with this signal, through capacitor C ₅Being coupled to power amplifier IC3(model is TBA810P) input end, after the amplification, by 15W loudspeaker Y ₂Send to outdoor, at this moment relay J time memory of memory circuit ₇J is passed through in also inevitable adhesive simultaneously on the one hand ⁷ _K-2With timer c-power supply E ₂Cut off, make it to stop walking to write down the time of fire alarm for the first time, meanwhile, the time basic assembly IC1(model of flashing signal circuit is NE555) must be electric, relay J ⁵Action is on the one hand by its contact J ⁵ _K-1Make pilot lamp A ₁(A ₂Or A ₃) form periodically flash of light, indicate certain surveillance zone and the condition of a fire occurs, and by with J ⁵ _K-2The disclosed a few days ago automatic telephone warning device of output port P starting that links to each other is sent to relevant department with fire information, reaches the long-distance transmissions purpose of fire alarm.

After sending alarm of fire, as long as press H one time ⁰, relay J ¹(J ²Or J ³) just discharge because of losing self-insurance, its contact resets, and causes IC1, IC2, IC3 dead electricity, acousto-optic is shown stop; Because of relay J ⁷ _K-1Holding function, J ¹Still keep attracting state, clock C does not walk, and continues the time of the memory fire alarm first time, has only manually to press self-insurance disengage button in the table, J ⁷Just can discharge J ⁷ _K-2Reset, when clock C just can recover normally to walk, the automatic telephone warning device that output port P joins also had only when the disengage button that manually presses itself or after treating two minutes, could shut down.

When this device is carried out desk checking, at first with disengage button switch H ⁰Open, make J ¹Lose self protective function.Press the first surveillance zone verification button H then ¹, the result is: IC1, IC2 get electric work, and at the indoor audible and visible alarm that sends, the expression fire alarm is working properly; Owing to press H ¹The time, H ¹ ₂Open circuit, IC3, J ⁷All do not power up, so when desk checking, outdoor loudspeaker Y ₂Do not ring, clock C does not stop to walk yet.

Under the normal situation of circuit, the X among the figure, Y, 3 of Z are high level, and triode BG1-BG3 is in conducting state.Its collector is zero level, thus the BG4 sealing, J ⁶Do not work, whole device is in the normal armed state.If disconnection fault appears in a certain surveillance zone, the then X(Y of fault initiating circuit or Z) level point reduces to 0, the BG1 sealing, collector rises to 1 level, BG4 conducting, J ^BGet electric work.The LED 1(or LED2, the LED3 that cause the knocking noise optical alarm circuit) ignite, point out that disconnection fault appears in this surveillance zone control line; J ^B _K-1Go to 2 by 1, make four tones of standard Chinese pronunciation integrated package IC2 by Y1 output simulation rescue sound, outdoor loudspeaker Y does not send sound equipment, clock does not stop to walk, and behind the fault alarm, turns off power switch K, after the disconnection fault eliminating, turn on the power switch again, can reenter alert formula state.

The front panel (see figure 7) of this device is provided with power light (6) trouble location display lamp (1,2,3), two display lamps (7,8,9 at warning position; 7 ', 8 ', 9 '), verification button (10,11,12), alarm silence switch (4) and fault silence switch (5), 13 is loudspeaker Y ₁

Power unit comprises transformer T, silicon bridge D, filter capacitor C ₁₆, switching relay J ^o, K switch, dry cell E ₁And E ₂Deng, exchange the incoming call delay circuit by the time base assembly IC4(NE555), capacitor C ₁₇, C ₁₈, diode D ₄With time-delay attracting electric relay J ⁴Form.The length of its delay time can be by R ₂₀, C ₁₇Set up.

Claims (5)

1, a kind of full-automatic fire warning device, has fire detector, start holding circuit, alarm signal circuit, alarm signal output circuit, the circuit that clocks, flashing signal circuit, output port, fault initiating circuit and fault sound and light show circuit, it is characterized in that the normally opened contact signal that fire detector provides, the relay adhesive that starts holding circuit is started and maintenance, and complete machine gets; The loudspeaker of alarm signal circuit produce sound equipment, and after sending alarm signal to output circuit to amplify, drive loudspeaker to the outdoor sound equipment that sends, the relay adhesive of the circuit that clocks, and timer stops walking; Meanwhile, the flashing signal circuit produces oscillator signal and drives the actuating of relay, and the control pilot lamp glitters; Then, through interface output normally opened contact signal.Take place as open circuit fault, the transistor output high level of fault-signal start-up circuit send the transistor of fault sound and light show circuit to drive the relay adhesive, makes light emitting diode light the indication fault position, and sends sound equipment.

2,, it is characterized in that said fire detector comprises temp.-determined type, sense cigarette formula and photosensitizing type according to the described full-automatic fire warning device of claim 1; The electric signal that the mercury conductivity meter G of temp.-determined type fire detector provides after amplifying, drives relay J ^AProduce the normally opened contact signal; The electric signal that the pneumoelectric conversion element QM-N88 of smoke fire detector provides; After amplifying, drive relay J ^BProduce the normally opened contact signal; The infrared receiving tube DG of photosensitizing type fire detector provides electric signal, after amplifying, drives relay J ^CProduce the normally opened contact signal.

3, according to the described full-automatic fire warning device of claim 1, it is characterized in that the combination type fire detector circuit structure that adopts is, with mercury conductivity meter G, gas-electric transition element QM-N88 and infrared photodiode DG respectively with model be CD4078's or a door IC input end Q join, or the triode BG14 of door IC output terminal K and collector connection relay J joins.

4, according to the described full-automatic fire warning device of claim 1, when it is characterized in that the initiating signal output of fire detector, c, the d shorted on both ends of starting holding circuit, 12 volts of power supplys are added on relay J, make it the adhesive starting.

5,, it is characterized in that front panel is provided with power light (6), trouble location display lamp (1,2,3), two display lamps (7,8,9 at warning position according to the described full-automatic fire warning device of claim 1; 7 ', 8 ', 9 '), verification button (10,11,12), alarm silence switch (4) and fault silence switch (5).

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