CN1754588A

CN1754588A - Disaster prevention fire-extinguishing system

Info

Publication number: CN1754588A
Application number: CNA200410080336XA
Authority: CN
Inventors: 金鸿龟
Original assignee: DONGYANG ALARM ELECTRONICS Co Ltd QINGDAO
Current assignee: DONGYANG ALARM ELECTRONICS Co Ltd QINGDAO
Priority date: 2004-09-29
Filing date: 2004-09-29
Publication date: 2006-04-05

Abstract

The invention belong to a hazard-proof and hazard-saving system, especially to a system which can block the gas valve, start the extinguishing device, exchange gas and alarm automatically according to the detected gas leakage signal, the fire signal and the air turbidity signal on the spot; comprising: main controlling chip, gas detecting, gas valve controlling unit, fire extinction controlling unit, alarming unit, air exchanging unit, outer controlling unit and speech output module; the outer controlling unit comprises hand switch and telephone signal control unit. The system integrates the gas-blocking, fire extinction, alarming and air-exchanging as a whole unit and it is a device for hazard-proof and hazard-saving automatically. The incidence rate can be reduced greatly if the user detects and operates every part of the system out of the spot by telephone, and at the same provides a safe way of closing the valve of the gas supply pipe.

Description

Disaster prevention fire extinguishing system

The technical field is as follows:

the invention belongs to a system related to gas disaster prevention and relief, in particular to a disaster prevention and extinguishing system which can automatically block a gas valve, start an extinguishing device and exchange air and give an alarm according to a gas leakage signal, a fire signal and an air turbid signal detected on site.

Background art:

with the development of society, combustion apparatuses using combustible gas as fuel (such as gas and natural gas) are gradually popularized in various households, and become one of the essential material conditions for family life and work. However, the flammable and explosive properties of combustible gas itself also bring about many accident hazards, and fire and personnel injury accidents caused by misoperation or carelessness of people occur.

In order to avoid accidents and timely rescue disasters, the improvement of the gas equipment in the prior art is more: (1) a gas leakage alarm device, (2) a gas leakage alarm and automatic gas supply pipe valve closing device, and (3) a gas leakage alarm and fire extinguishing device;

in order to inform a user and take measures in time when gas leaks, a sensor and an alarm are arranged in the gas leakage alarm device; in addition, in order to solve the defect that the user cannot artificially and timely prevent and relieve disasters when the user is not on site, a structure that the system automatically closes the gas valve is added on the basis of an alarm device in the prior art, so that when the system detects that gas leaks, the system can automatically close the gas valve according to an instruction sent by the processor; moreover, in order to immediately give an alarm, notify a user and take fire extinguishing measures when a fire occurs on the site, the fire extinguishing device is added on the basis of the alarm device in the prior art, so as to achieve the purpose of timely disaster relief.

The following links mainly exist for the prevention and disaster relief of gas accidents: 1. detecting: detecting the leakage of gas and the occurrence of fire; 2. cutting off gas: when an accident occurs, the first operation is to cut off the valve of the gas supply pipe immediately and block the gas source; 3. fire extinguishing: when fire occurs on site, the system automatically starts the fire extinguishing device to extinguish fire; 4. and (4) alarming: when a situation occurs, the system notifies the user in time, so that the user can take measures of fire extinguishing and rescue.

However, the following technical problems still exist in the prior art:

(1) in the prior art, a technical scheme of combining an alarm (sound and light alarm and voice alarm), an automatic gas supply pipe valve closing device and an automatic heat-sensitive fire extinguishing device is lacked, so that the hidden danger of disaster prevention and relief cannot be carried out in all directions.

(2) In disaster prevention and fire extinguishing systems, automatic induction ventilators are lacking in the prior art. Whether gas leakage or fire occurs, a large amount of harmful gas exists in the air on site, and life danger is caused to users. The ventilation device should be a major relief device in a fire protection system.

(3) In the prior art, a device for automatically closing a gas valve exists when gas is leaked, but in practical application, if the gas valve and a driving part thereof break down once, an instruction cannot be normally executed and operation cannot be completed. However, in the prior art, a detection part and an alarm part of the gas valve are not provided, so that the system is lack of safety guarantee. Similarly, when a fire disaster occurs, although an automatic fire extinguishing device is arranged in the prior art, if the problems of failure of a fire extinguisher driving motor or insufficient pressure of the fire extinguisher exist, the fire extinguisher cannot be normally started and cannot be put out. The prior art scheme also lacks a component for detecting the state of the fire extinguisher. Placing the system in an unstable state.

(4) When a gas leakage signal is not detected on site, a user opens the gas supply pipe valve to go out, so that the valve is in an open state for a long time to bring potential safety hazards; meanwhile, if the user can not get back to the site for a long time outside, the state of the current gas valve can not be known, and the normal closing of the gas valve on the site can not be controlled outside. The prior art has only a single function (a user can know the state of components such as a gas valve and the like only in the field and operate the components), and has no device for the user to know and operate the state of the system by using a communication tool, so that a plurality of accident hidden dangers and inconvenience in use are brought.

The invention content is as follows:

in the technical scheme, the system comprises: the alarm device (sound, light alarm and voice alarm), the automatic closing gas valve device, the automatic heat-sensitive fire extinguishing device and the ventilation device solve the defect that the system cannot perform all-around disaster prevention and fire fighting because of simply cutting off gas or simply extinguishing fire in the existing device. Meanwhile, the system also comprises a detection device of the gas valve and a detection device of the fire extinguisher, so that a user can know the state of the operating part in time. The system is also provided with an external command control unit, so that a user can operate the system outside the field to master the states of all parts of the system.

The specific technical scheme of the invention is as follows:

a disaster prevention and fire suppression system comprising: system main control unit and with the gas detection and gas valve control unit 1 that system main control unit is connected, the control unit 2 that puts out a fire and alarm unit 3, wherein:

A. the system main control unit comprises: the fire extinguishing system comprises a main control chip 10 and a power supply, wherein the main control chip 10 is connected with a gas detection and gas valve control unit 1, a fire extinguishing control unit 2 and an alarm unit 3 through signal terminal pins, and the main control chip 10 sends instructions and receives return signals of all the units; the power supply is one of direct current or alternating current.

B. The gas detection and gas valve control unit 1 includes:

a. combustible gas detection module 11: the gas detection device comprises a gas detection sensor and a control comparison circuit; the combustible gas detection module 11 is used for detecting the gas leakage condition on site, and when the combustible gas leaks, the gas detection sensor senses and transmits the sensing signal to the system main control chip 10 through the control comparison circuit.

b. Gas valve control module: the gas valve control module is used for opening or cutting off the gas valve; it includes a gas valve driving part 32 for controlling the opening/closing of the valve, a timer 54 and a gas valve part 31; the signal of the main control chip 10 is transmitted to the gas valve 31 through the gas valve driving part 32, and controls the action of the gas valve.

C. The fire extinguishing control unit comprises:

a. the fire detection module 41: it includes a heat sensing detection sensor; the fire detection unit 41 is used for detecting the fire occurrence situation of the scene, when a fire occurs, the heat-sensitive detection sensor senses the temperature change and transmits a sensing signal to the main control chip 10 of the system, when the scene temperature reaches 100 ℃, the system closes a gas valve, and when the scene temperature reaches 130 ℃, the system drives the fire extinguisher 42 to extinguish the fire.

b. A fire extinguishing module: the fire extinguisher comprises a fire extinguisher 42 (comprising a fire extinguisher pressure sensor), a fire extinguisher driving motor 43 and a fire extinguisher driving part 46, wherein the fire extinguishing module is used for extinguishing fire on site; the main control chip 10 transmits an instruction of opening the fire extinguisher 42 to the fire extinguisher driving motor 43 through the fire extinguisher driving part 46, and the fire extinguisher driving motor 43 drives the fire extinguisher 42 to work.

D. The alarm unit 3: the alarm comprises an audible alarm 13 and an optical alarm 12, wherein the audible alarm and the optical alarm are used for performing audible and optical alarm on site; when gas leakage or fire occurs on site, the main control chip 10 transmits an alarm signal to the audible and visual alarm to give an alarm.

In addition to the above parts, the disaster prevention and fire extinguishing system further comprises: the gas detection and control unit 1 further comprises a gas valve detection module 33, and the system main control unit further comprises a system external control module and a voice output module. Wherein,

the gas valve detection module 33 is configured to detect an open/close state of a gas valve and notify the main control chip 10 of a detection result. Meanwhile, if the gas valve is in an abnormal state (the gas valve cannot operate normally), the gas valve detection module 33 transmits a gas valve fault signal to the main control chip 10 and gives an alarm.

The system external control module is used for inputting commands outside the system so as to control the system to perform disaster prevention and relief operations. The module inputs an external command to the main control chip 10, and the main control chip 10 performs command control. The external control module is a unit that a user controls the system off-site.

The voice output module comprises a field voice output part and a remote voice output part. The on-site voice output part, namely the audio output unit 22 comprises a voice storage chip U6 and a loudspeaker SP1, wherein the voice storage chip U6 stores prompt voice signals of the device states of all parts of the system; the remote voice output part comprises a voice storage chip U5 storing an external command input prompt voice signal, a memory chip V6 storing a user authentication password and a system operation control code, and a remote input/output device. The voice output module is used for instantly outputting a voice signal on site to prompt a user when a site condition occurs or a system operates; and on the other hand, when the user inputs an external command to control the system to work, a prompt voice signal is output to prompt the user to act.

The gas detection and gas valve control unit 1, the fire extinguishing control unit 2 and the on-site sound and light alarm unit 3 are all connected with a system main control unit, and a main control chip 10 controls and operates all the units.

After the combustible gas detection module 11 detects the gas leakage signal, signal transmission to the main control chip 10 is controlled by the main control chip 10: (1) the main control chip 10 outputs an alarm signal to an audible and visual alarm of the alarm unit 3 to alarm; (2) the main control chip 10 outputs a gas valve detection signal to the gas valve detection module 33 for gas valve state detection, and the gas valve detection module 33 transmits a detection result signal back to the main control chip 10; (3) if the gas valve signal input into the main control chip 10 indicates that the valve is in an open state, the main control chip 10 outputs a gas valve closing signal to the gas valve control module to control the gas valve to close, the gas valve detection module 33 detects the closing state of the gas valve, and the state signal is transmitted back to the main control chip 10; the main control chip 10 outputs a normal closing signal of the gas valve to the voice output module, and outputs a system state voice signal; (4) if the signal input into the main control chip 10 indicates that the gas valve is in a closed or abnormal state, the main control chip 10 outputs a signal to the voice output module to output a system state voice signal, and the main control chip 10 outputs an alarm signal to the alarm unit 3 to perform sound and light alarm.

After the fire detection module 41 detects a fire signal, the fire signal is input into the main control chip 10 and is controlled by the main control chip 10: (1) the main control chip 10 outputs an alarm signal to an audible and visual alarm of the alarm unit 3 to alarm; (2) the main control chip 10 outputs signals for detecting and closing the gas valve to the gas valve detection module 33 and the gas valve control module to control the gas valve to close, and the process is the same as the process from the process (2) to the process (4) in the upper section; (3) the main control chip 10 outputs a fire extinguishing signal to the fire extinguishing module to extinguish fire; (4) the main control chip 10 outputs a signal to the voice output module, and outputs a voice signal of the system state.

Based on the above technical scheme, one side of the gas valve detection module 33 is connected with the main control chip 10, the other side of the gas valve detection module is electrically connected with the limit switches SW1 and SW2 of the gas valve part, the gas valve detection module 33 is composed of two groups of test circuits, one ends of the two groups of test circuits are respectively connected with the main control chip, and the other ends of the two groups of test circuits are respectively electrically connected with the limit switches SW1 and SW2 through lines W1 and W2. One set of test circuits i is composed of resistors R5-R8 and a capacitor C1, and the other set of test circuits ii is composed of resistors R9-R12 and a capacitor C2. The gas valve detection module 33 judges the state of the gas valve by detecting the voltage difference of the limit switches connected to both sides of the gas valve driving motor. The system sets corresponding voltage threshold values for the opening and closing of the gas valve. If the test signal meets a part of the threshold range, the detection unit informs the main control chip 10 of the detection result; if the test signal does not conform to any part of the threshold range, the limit switches at the two ends of the valve are in an abnormal state. The detection unit informs the main control chip 10 of the detection result and gives an alarm.

In practical application, the fire extinguishing control unit 2 further comprises a driving motor detection part 45 for detecting the state of a driving motor of the fire extinguisher;

the fire extinguisher driving motor detection part 45 comprises a fire extinguisher driving motor 43 and a detection circuit I, wherein one end of the fire extinguisher driving motor 43 is connected with a power supply, and the other end of the fire extinguisher driving motor 43 is connected with the detection circuit I; the detection circuit I comprises resistors R6-R8 and a transistor Q1, the fire extinguisher drive motor 43 is electrically connected with the base electrode of the transistor Q1 through resistors R6 and R7, the collector electrode is connected with a PA5 signal port of the main control chip, the emitter electrode is grounded, and the transistor Q1 outputs the detection signal of the fire extinguisher drive motor 43 to the main control chip 10.

In practical applications, the fire extinguisher drive section 46 in the fire suppression module includes transistors Q2 and Q3. The collector of the transistor Q2 is grounded, the emitter is connected with the fire extinguisher drive motor 43 through the diode D1, the base of the transistor Q2 is connected with the collector of the transistor Q3 through the resistor R9, the emitter of the transistor Q3 is grounded, and the base is connected with the SEG12 signal port of the main control chip 10 through the resistor R11. The main control chip 10 transmits a signal for starting the fire extinguisher drive motor 43 to the fire extinguisher drive motor 43 through the SEG12 signal port through the fire extinguisher drive part 46.

In practical application, the fire extinguishing control unit 2 further comprises a pressure sensor detecting part 44 for detecting the state of a pressure sensor of the fire extinguisher;

the fire extinguisher pressure sensor detection part 44 comprises a pressure sensor and a detection circuit II of the fire extinguisher, one end of the pressure sensor of the fire extinguisher is connected with a power supply, and the other end of the pressure sensor of the fire extinguisher is connected with the detection circuit II; the detection circuit II comprises resistors R12-R16, a capacitor C3, diodes D2 and D3, the output end of the fire extinguisher pressure sensor is respectively connected with the cathodes of the diodes D2 and D3 through the resistors R12-R16 and the capacitor C3, and the anodes of the diodes D2 and D3 are respectively connected with the PA6 and PA7 signal ports of the main control chip.

Except that the disaster prevention and fire extinguishing system comprises a main control unit of the system, a gas detection and gas valve control unit 1, a fire extinguishing control unit 2 and an alarm unit 3, in a specific system, the disaster prevention and fire extinguishing system also comprises a ventilation unit 4, when the ventilation unit 4 detects that air on the site is turbid, a signal is output to the main control chip 10, and the main control chip 10 sends an instruction: the ventilator is commanded to ventilate. The ventilation unit 4 includes: an air cleanliness detection sensor 51, a ventilator 53, and a ventilator drive motor 52; the air cleanliness detection sensor 51 inputs signals to the main control chip 10, the main control chip 10 outputs ventilation signals to the ventilator driving motor 52, and the ventilator driving motor 52 drives the ventilator 53 to ventilate; meanwhile, the main control chip 10 outputs a signal to the voice output module to output a voice signal of the system ventilation state.

In the above disaster prevention system, the external control module of the system is a set of external command manual switches 15, and the manual switches 15 are arranged on the field operation platform and used for the user to operate on the field. The manual switch 15 comprises a gas valve opening command switch, a gas valve closing command switch, a gas valve state detection command switch, a fire extinguisher detection command switch and a ventilation command switch. One end of the external command manual switch is connected with the main control chip 10, and the other end of the external command manual switch is grounded.

In the disaster prevention system, the system external control module may also be a remote control system operation module, and the remote control system operation module inputs a control command signal into the main control chip 10 to perform operation control on the system; the remote control system operation module is one of a telephone signal control unit or an internet control unit.

In a specific system, the system external control module comprises two parts: one part is that a group of external command manual switches 15 are arranged outside the disaster prevention and fire extinguishing system, the other part is that a remote control system operation module is arranged, and the remote control system operation module is a telephone signal control unit 5. The telephone signal control unit 5 includes: telephone signal input/output device 24, telephone noise filter 23, telephone signal analysis portion 25, telephone voice memory chip 21 and memory chip 14 in which user authentication password and system operation control code are stored.

The telephone signal analysis part 25 comprises a telephone ring control chip U4 and a digital/analog control circuit. The digital/analog control circuit is used for performing analog-to-digital and digital-to-analog conversion, that is, after converting an externally input analog signal into a digital signal, the digital signal is input into the main control chip 10, or the digital signal sent by the system is converted into an analog signal received by a user, and the signal is output.

The telephone noise filter 23 is used for removing noise and interference sound in the telephone, and the telephone noise filter 23 is composed of a filter CNR1, energizing coils F3, F4 and a capacitor C3.

The telephone voice storage chip 21 is connected with a VIOCE signal port of the main control chip 10;

the pins of the memory chip 14 storing the user authentication password and the system operation control code are respectively connected with the pins of the main control chip 10;

after the telephone signal passes through the telephone signal input/output device 24 and is processed by the telephone noise filter 23, the telephone signal analysis part 25 analyzes the ring tone of the telephone signal, the ring tone meets the system requirement, the main control chip 10 outputs the signal which prompts the user to input the voice information of the authentication password through the telephone signal analysis part 25, the telephone voice storage chip 21 and the telephone input/output device 24, and the main control chip 10 and the memory chip 14 storing the user authentication password detect the externally input signal; if the user password information is authenticated, prompting the user to input a control signal for system operation, if the user password information is not consistent with the system memory signal, outputting a voice signal to prompt the user that the input is wrong, and prompting the user to input the password information again, wherein the system sets the password input frequency to be not more than five times. If the user inputs the authenticated password continuously for five times and the password set by the system does not accord with each other, the system automatically cuts off the telephone signal.

When the user passes the authentication, the system prompts the user to input a system operation control signal. And prompts the user with voice for the corresponding input code for each command. The operations that the user can perform through the telephone are as follows: closing the gas valve, checking the state of the gas valve, extinguishing fire and ventilating. When the user inputs the corresponding command code, the code signal is transmitted to the main control chip 10 through the telephone signal analysis part 25, the main control chip 10 controls the system to execute each instruction, and the main control chip 10 informs the state of the system to the user through the telephone input/output device 24. The user can grasp the system information in time.

The other part of the system is a set of external command manual switches 15, and the manual switches 15 are arranged on the field operation platform and used for operation of a user on the field. The manual switch 15 comprises a gas valve opening command switch, a gas valve closing command switch, a gas valve state detection command switch, a fire extinguisher detection command switch and a ventilation command switch. One end of the external command manual switch 15 is connected with the main control chip 10, and the other end is grounded.

In a specific system, a gas detection sensor and a control comparison circuit are included in the combustible gas detection module 11. The gas detection sensor is a gas sensor; the control comparison circuit comprises: the gas leakage detection circuit comprises a detection circuit 100 for sensing gas leakage, a conversion circuit 200 for converting the level of a gas leakage signal, and a comparison circuit 300 for comparing the gas signal with the converted level with a predetermined standard level.

The comparison circuit 300 comprises: the circuit comprises a comparison amplifier CP1, resistors R12-R16, a transistor Q3, a diode D3, a capacitor C7 and a Zener diode ZD 2. The output terminal of the comparator CP1 is electrically connected to the base of the transistor Q3, and the collector is connected to the anode of the diode D3. The cathode of the diode D3 is connected to the zener diode ZD2 which acts as a voltage regulator, the cathode of the diode D3 is also connected to the ground through the capacitor C7, and the signal output from the zener diode ZD2 is input into the main control chip 10 to control the alarm or close the valve.

In a specific system, the fire detection module 41 includes a thermal detection sensor, which is a temperature sensor; when a fire occurs, the temperature detection sensor senses the temperature change and transmits a sensing signal to the main control chip 10 of the system, when the field temperature reaches 100 ℃, the system closes the gas valve, and when the field temperature is higher than 130 ℃, the system drives the fire extinguisher 42 to extinguish the fire.

In a specific system, the sound and light alarm devices in the alarm unit 3 are an indicator light alarm 12 and a sound alarm 13 respectively; the alarm unit 3 is respectively connected with pins of the main control chip 10;

the audio output unit 22 is connected with the main control chip 10, and the audio output unit 22 is a device for outputting the state information of each part of the system in the field by using audio signals; the audio output unit 22 comprises a voice memory chip and a loudspeaker;

the timer 54 is connected to the pins of the main control chip 10. The timer 54 is used to control the time for closing the gas valve.

In a particular system, the system further comprises a set of battery charging devices and a battery detection circuit;

the battery charging device comprises an alternating current input end, a high-frequency oscillator T2 and a diode rectifier bridge.

The battery detection circuit is used for detecting the state of the battery and the state of the external power supply.

The main control chip 10(U1, U3) is HT48R30A, HT46R63 respectively; the memory chip 14(V6) storing the control password is 24LC 02B; the telephone ring control chip (U4) is HT 9170C; the telephone voice memory chip (U5) is AP 1840N; the sound output chip (U6) is SIT 8602B.

The disaster prevention fire extinguishing system comprises an alarm device (sound, light alarm and voice alarm), an automatic gas supply pipe valve closing device, an automatic heat sensing fire extinguishing device and a ventilation device. When gas leaks, the system sends out sound-light alarm signals and voice alarm signals through the alarm device to inform a user; simultaneously, immediately closing a valve of the gas supply pipe and cutting off a gas source; when the system detects a fire, the system sends out an alarm on one hand, and cuts off a gas supply pipe valve on the other hand, so as to cut off a gas source, and simultaneously, a fire extinguisher is automatically started to carry out fire extinguishing operation on the site; when the air is turbid on site, the system gives an alarm and automatically ventilates; the system can detect the gas valve and the fire extinguisher, and when the gas valve cannot be normally started, the system prompts a user to repair and replace by voice; when the fire extinguisher driving motor or the pressure sensor breaks down, the system prompts a user to repair and replace the fire extinguisher driving motor or the pressure sensor by voice. The invention carries out three-dimensional disaster prevention and relief from alarming to cutting off the gas source and extinguishing fire, meanwhile, if the gas valve and the fire extinguisher have faults, the system also has subsequent operation and informs the user to repair in time, and the arrangement of each part of the system completely replaces the artificial operation, namely, the system can accurately detect and timely execute the system instruction even if the user is not on the spot, thereby completing the task of disaster prevention and extinguishing fire.

In addition, the system overcomes the defect of single operation in the prior art, so that a user can detect and close the gas valve, extinguish fire, exchange air and the like of each part of the system through remote transmission, such as a telephone system, outside the site, the accident rate can be greatly reduced by increasing the part, and meanwhile, a way for safely closing the gas supply pipe valve is provided for the off-site user. The invention requires that the technical support conditions provided on the site are not high, is easy to operate and has strong practicability in actual life and work.

Description of the drawings:

FIG. 1 is a schematic view of the present invention mounted on a gas range;

FIG. 2 is a block diagram of the system of the present invention;

FIG. 3 is a block diagram of modules of the system according to embodiment 1 of the present invention;

FIG. 4 is a block diagram of modules of the system according to embodiment 2 of the present invention;

FIG. 5 is a schematic diagram of the electrical circuit configuration of the combustible gas detection module of the present invention;

FIG. 6 is a schematic circuit diagram of the fire extinguisher drive motor detection part 45 and the fire extinguisher drive motor driving part 46 according to the present invention;

FIG. 7 is a schematic circuit diagram of the fire extinguisher pressure sensor detection unit 44 of the present invention;

FIG. 8 is a schematic diagram of the electrical circuitry of the gas valve section, the gas valve actuator section, and the gas valve detection module of the present invention when the gas valve is in an open state;

FIG. 9 is a schematic diagram of the electrical circuit of the gas valve, the gas valve actuator, and the gas valve detection module of the present invention when the gas valve is closed;

FIG. 10-A is a flow chart of the present invention for closing a gas valve;

FIG. 10-B is a flow chart of the present invention showing the operation of the system for closing the valve via the telephone control unit;

FIG. 11 is a schematic view of the timing control of the present invention;

FIG. 12 is a general circuit diagram of the present invention (1); the main chip U3HT46R63 is divided into four figures, namely 12A, 12B, 12C and 12D according to the upper left, lower left, upper right and lower right.

FIG. 13 is the general circuit diagram (2) of the present invention.

The above drawings are described in detail with reference to the following embodiments.

The specific implementation mode is as follows:

fig. 1 is a schematic view of the present invention mounted on a gas range. Wherein (A) is a schematic front view; (B) is a schematic sectional view.

Wherein, 1000 is the main control board 2000 of the gas fire-fighting device is a gas stove; 11 is a combustible gas detection module; 31 is a gas valve part; 41 is a fire detection module 42 is a fire extinguisher; 43 is a fire extinguisher driving motor; 47 is fire extinguisher jet orifice; 51 is an air cleanliness detection sensor; 15 is a manual switch; 3000 is a power socket.

The kitchen cabinet is provided with a gas stove 2000, a main control panel 1000 of the gas disaster prevention fire extinguishing device, a manual switch 15 and a socket 3000, and gas is transmitted to the gas stove 2000 through a gas pipeline P provided with a gas valve part 31. The upper part of the gas stove 2000 is provided with a combustible gas detection module 11 and an air cleanliness detection sensor 51; the fire extinguisher 42 with the fire extinguisher driving motor 43 at the upper end is arranged at the upper part of the gas stove 2000; the fire extinguisher injection orifice 47 of the fire extinguisher 42 is aligned with the gas range 2000; the fire detection module 41 is mounted side-by-side with the fire extinguisher spray orifice 47.

FIG. 2 is a block diagram of the system of the present invention;

a disaster prevention and fire extinguishing system comprises a main control chip 10, a gas detection and gas valve control unit 1, a fire extinguishing control unit 2, an alarm unit 3, a ventilation unit 4, a system external control module and a voice output module, wherein the system external control module comprises a manual switch 15 and a telephone signal control unit 5.

Wherein: the gas detection and gas valve control unit 1 includes: a combustible gas detection module 11, gas valve control modules (32 and 31), and a gas valve detection module 33.

The fire extinguishing control unit 2 includes: the fire detection module 41, the fire extinguishing module (fire extinguisher 42), the fire extinguisher drive motor detection unit 45 and the fire extinguisher pressure sensor detection unit 44.

The system main control unit includes: the main control chip 10, the power supply, the system external control module and the voice output module, wherein the system external control module comprises a manual switch 15 and a telephone signal control unit 5.

An alarm unit 3: it comprises an audible alarm 13 and a light alarm 12.

Fig. 3 is a block diagram of modules of the system according to embodiment 1 of the present invention.

A disaster prevention and fire suppression system comprising: system main control chip 10, gas are surveyed and gas valve control unit 1, fire extinguishing control unit 2, alarm unit 3 and the unit 4 of taking a breath, hand switch 15, phone voice memory chip 21, audio output unit 22, wherein:

A. the gas detection and valve control unit 1 includes: the combustible gas detection module 11, the gas valve driving part 32, the timer 54 and the gas valve part 31 further include a gas valve detection module 33.

Wherein, the combustible GAS detection module 11 is connected with a GAS terminal pin of the main control chip 10; four end pins of PO (a, b, c and d) of the main control chip 10 are connected with a gas valve driving part 32, the gas valve driving part is connected with a gas valve part 31 through W1 and W2 wires, and meanwhile, one end of a gas valve detection module 33 is connected with detection wires W1 and W2 through wires, and the other end of the gas valve detection module is connected with end pins e and f of a BSI port of the main control chip. The timer 54 is connected to the PGO port of the main control chip.

B. The fire extinguishing control unit 2 includes: the fire detection module 41, the fire extinguisher 42 (including the fire extinguisher drive motor 43 and the fire extinguisher pressure sensor) and the fire extinguisher drive part 46, and further including the fire extinguisher drive motor detection part 45 and the fire extinguisher pressure sensor detection part 44.

Wherein, the fire detection module 41 notifies the system of the sensing signal through the TEM port of the main control chip 10; the main control chip 10 drives the fire extinguisher driving motor 43 to extinguish fire through the fire extinguisher driving part 46 by using the command through the SEG12 port, and the fire extinguisher driving part 46 is connected with the fire extinguisher driving motor 43; one end of a detection part 45 for detecting the fire extinguisher driving motor is connected with the fire extinguisher driving motor 43, and the other end of the detection part is connected with a PA5 port of the main control chip 10; and the fire extinguisher pressure sensor sensing part 44 transmits the sensing signal to the ports PA6 and PA7 of the main control chip 10.

C. The alarm unit 3 includes: an audible alarm 13 and a light alarm 12. Wherein, the sound alarm is connected with the BZ terminal pin of the main control chip 10; the indicator light alarm 12 is connected with the LAMP terminal pin of the main control chip 10.

D. The ventilation unit 4 includes: an air cleanliness detection sensor 51, a ventilator 53, and a ventilator driver 52. Wherein, the GAS2 port of the main control chip 10 is connected with the air cleanliness detecting sensor 51; the ventilator driver 52 has one end connected to the PUT2 port of the main control chip 10 and the other end connected to the ventilator 53.

E. The manual switch 15 is connected with a KEY terminal pin of the main control chip 10; the telephone VOICE storage chip 21 is connected with the VOICE port of the main control chip 10; the AO port of the main control chip 10 is connected to the audio output unit 22.

After the combustible gas detection module 11 detects the gas leakage signal, signal transmission to the main control chip 10 is controlled by the main control chip 10: (1) the main control chip 10 outputs alarm signals to the sound and light alarms 13 and 12 of the alarm unit 3 to alarm; (2) the main control chip 10 outputs a gas valve detection signal to the gas valve detection module 33 for gas valve state detection, and the gas valve detection module 33 transmits a detection result signal back to the main control chip 10; (3) if the gas valve signal input into the main control chip 10 indicates that the valve is in an open state, the main control chip 10 outputs a gas valve closing signal to the gas valve part 31 through the gas valve driving part 32 to control the gas valve to close, and the gas valve detection module 33 detects the closing state of the gas valve and transmits the state signal back to the main control chip 10; then the main control chip 10 outputs a normal closing signal of the gas valve to the audio output unit 22, and outputs a system state voice signal; (4) if the signal input into the main control chip 10 indicates that the gas valve is in a closed or abnormal state, the main control chip 10 outputs a signal to the audio output unit 22, outputs a system state voice signal, and outputs an alarm signal to the alarm unit 3 by the main control chip 10 to perform sound and light alarm.

After the fire detection module 41 detects a fire signal, the fire signal is input into the main control chip 10 and is controlled by the main control chip 10: (1) the main control chip 10 outputs alarm signals to the sound and

light alarms

13 and 12 of the alarm unit 3 to alarm; (2) the main control chip 10 outputs a gas valve detection and gas valve closing signal to the gas valve detection module 33 and the gas valve portion 31 to control the closing of the gas valve, which is the same as the process from the process (2) to the process (4) in the previous section; (3) the main control chip 10 outputs a fire extinguishing signal to the fire extinguishing control unit 2 for extinguishing fire. The method comprises the following specific steps: the fire extinguisher driving motor detection part 45 and the fire extinguisher pressure sensor detection part 44 inform the main control chip 10 of the states of the fire extinguisher driving motor 43 and the pressure sensor, the main control chip 10 sends an instruction to the fire extinguisher driving part 46, the fire extinguisher driving motor 43 is started by the fire extinguisher driving part 46, and then the fire extinguisher 42 is driven to extinguish fire. If the fire extinguisher driving motor 43 or the fire extinguisher pressure sensor is in an abnormal state, the main control chip 10 carries out sound and light alarm and voice alarm on the signal transmission alarm unit 3 and the audio output unit 22. (4) The main control chip 10 outputs a signal to the audio output unit 22, and outputs a voice signal of the system state.

When the ventilation unit 4 detects that the air on the spot is turbid, the signal is output to the main control chip 10, and the main control chip 10 sends out an instruction: ventilator 53 is commanded to ventilate. The air cleanliness detection sensor 51 inputs signals to the main control chip 10, the main control chip 10 outputs ventilation signals to the ventilator driver 52, and the ventilator driver 52 drives the ventilator 53 to ventilate; meanwhile, the main control chip 10 outputs a signal to the audio output unit 22, and outputs a voice signal of the system ventilation state.

The manual switch 15 is arranged on the field operation platform and is used for a user to operate on the field. The manual switch 15 comprises a gas valve opening command switch, a gas valve closing command switch, a gas valve state detection command switch, a fire extinguisher detection command switch and a ventilation command switch. One end of the external command manual switch 15 is connected with a KEY terminal pin of the main control chip 10, and the other end is grounded.

FIG. 4 is a block diagram of modules of the system according to embodiment 2 of the present invention

A disaster prevention and fire suppression system comprising: the system comprises a system main control chip 10, a gas detection and gas valve control unit 1, a fire extinguishing control unit 2, an alarm unit 3, a ventilation unit 4, a manual switch 15, a telephone voice storage chip 21 and an audio output unit 22, and further comprises a telephone signal control unit 5: wherein:

Wherein, the combustible GAS detection module 11 is connected with a GAS terminal pin of the main control chip 10; four end pins of PO (a, b, c and d) of the main control chip 10 are connected with a gas valve driving part 32, the gas valve driving part is connected with a gas valve part 31 through W1 and W2 wires, and meanwhile, one end of a gas valve detection module 33 is connected with detection wires W1 and W2 through wires, and the other end of the gas valve detection module is connected with end pins e and f of a BSI port of the main control chip. The timer 54 is connected to the PGO pin of the main control chip.

Wherein, the fire detection module 41 notifies the system of the sensing signal through the TEM port of the main control chip 10; the main control chip 10 drives the fire extinguisher driving motor 43 to start through the fire extinguisher driving part 46 by using an instruction through an SEG12 port, and the fire extinguisher driving part 46 is connected with the fire extinguisher driving motor 43; one end of a detection part 45 for detecting the fire extinguisher driving motor 43 is connected with the fire extinguisher driving motor 43, and the other end is connected with a PA5 port of the main control chip 10; and the fire extinguisher pressure sensor sensing part 44 transmits the sensing signal to the ports PA6 and PA7 of the main control chip 10.

C. The alarm unit 3 includes: sound alarm 13, pilot lamp alarm 12. Wherein, the sound alarm 13 is connected with the BZ terminal pin of the main control chip 10; the indicator light alarm 12 is connected with the LAMP terminal pin of the main control chip 10.

F. The telephone signal control unit 5 includes: a telephone signal input/output device 24, a telephone noise filter 23, a telephone signal analysis section 25, and a memory chip 14 storing a user authentication password and a system operation control code. Wherein, the telephone signal input/output device 24 is connected with TEL terminal pin of the main control chip 10 through the telephone noise filter 23, one end of the telephone voice memory chip 21 is connected with the telephone signal input/output device 24, the other end is connected with the main control chip 10, it informs the system state to the users of other places through the telephone device with the voice signal; the telephone signal analysis part 25 is connected with the TC terminal pin of the main control chip 10; the memory chip 14 is connected to the ME terminal pin of the main control chip 10.

After the combustible gas detection module 11 detects the gas leakage signal, signal transmission to the main control chip 10 is controlled by the main control chip 10: (1) the main control chip 10 outputs alarm signals to the sound and light alarms 13 and 12 of the alarm unit 3 to alarm; (2) the main control chip 10 outputs a gas valve detection signal to the gas valve detection module 33 for gas valve state detection, and the gas valve detection module 33 transmits a detection result signal back to the main control chip 10; (3) if the gas valve signal input into the main control chip 10 indicates that the valve is in an open state, the main control chip 10 outputs a gas valve closing signal to the gas valve part 31 through the gas valve driving part 32 to control the gas valve to close, and the gas valve detection module 33 detects the closing state of the gas valve and transmits the state signal back to the main control chip 10; the main control chip 10 outputs a normal closing signal of the gas valve to the audio output unit 22, and outputs a system state voice signal; (4) if the signal input into the main control chip 10 indicates that the gas valve is in a closed or abnormal state, the main control chip 10 outputs a signal to the audio output unit 22, outputs a system state voice signal, and outputs an alarm signal to the alarm unit 3 by the main control chip 10 to perform sound and light alarm.

light alarms

13 and 12 of the alarm unit 3 to alarm; (2) the main control chip 10 outputs a gas valve detection and gas valve closing signal to the gas valve detection module 33 and the gas valve portion 31 to control the closing of the gas valve, which is the same as the process from the process (2) to the process (4) in the previous section; (3) the main control chip 10 outputs a fire extinguishing signal to the fire extinguishing control unit 2 for extinguishing fire. The method comprises the following specific steps: the fire extinguisher driving motor detecting part 45 and the fire extinguisher pressure sensor detecting part 44 inform the main control chip 10 of the states of the fire extinguisher driving motor and the pressure sensor, the main control chip 10 sends an instruction to the fire extinguisher driving part 46, the fire extinguisher driving motor 43 is started by the fire extinguisher driving part 46, and then the fire extinguisher 42 is driven to extinguish fire. If the fire extinguisher driving motor 43 or the fire extinguisher pressure sensor is in an abnormal state, the main control chip 10 carries out sound and light alarm and voice alarm on the signal transmission alarm unit 3 and the audio output unit 22. (4) The main control chip 10 outputs a signal to the audio output unit 22, and outputs a voice signal of the system state.

After the telephone signal passes through the telephone signal input/output device 24 and is processed by the telephone noise filter 23, the telephone signal analysis part 25 analyzes the ring tone of the telephone signal, the ring tone meets the system requirement, the main control chip 10 outputs the signal which prompts the user to input the voice information of the authentication password through the telephone signal analysis part 25, the telephone voice storage chip 21 and the telephone input/output device 24, and the main control chip 10 and the memory chip 14 storing the user authentication password detect the externally input signal; if the user password information is authenticated, the telephone signal input/output device 24 prompts the user to input a control signal for system operation, if the user password information does not accord with the system memory signal, a voice signal is output to prompt the user that the input is wrong, the user is prompted to input the password information again, and the system sets the password input frequency to be not more than five times. If the user inputs the authenticated password continuously for five times and the password set by the system does not accord with each other, the system automatically cuts off the telephone signal.

When the user passes the authentication, the system prompts the user to input a system operation control signal. And prompts the user with voice for the corresponding input code for each command. The operations that the user can perform through the telephone are as follows: closing the gas valve, checking the state of the gas valve, extinguishing fire and ventilating. When the user inputs the corresponding command code, the code signal is transmitted to the main control chip 10 through the telephone signal input/output device 24, the telephone noise filter 23 and the telephone signal analysis part 25, the main control chip 10 controls the system to execute each instruction, and the main control chip 10 informs the state of the system to the user through the telephone signal input/output device 24. The user can grasp the system information in time.

the combustible gas detection module 11 comprises a gas detection sensor and a control comparison circuit. The gas detection sensor is a gas sensor; the control comparison circuit comprises: the gas leakage detection circuit comprises a detection circuit 100 for sensing gas leakage, a conversion circuit 200 for converting the level of a gas leakage signal, and a comparison circuit 300 for comparing the gas signal with the converted level with a predetermined standard level.

the fire extinguisher driving motor detection part 45 comprises a fire extinguisher driving motor 43 and a detection circuit I, wherein one end of the fire extinguisher driving motor 43 is connected with a power supply, and the other end of the fire extinguisher driving motor 43 is connected with the detection circuit I; the detection circuit I comprises resistors R6-R8 and a transistor Q1, the output end of the fire extinguisher driving motor 43 is electrically connected with the base electrode of the transistor Q1 through resistors R6 and R7, the collector electrode is connected with the PA5 terminal pin of the main control chip, the emitter electrode is grounded, and the transistor Q1 outputs the signal of the driving motor 43 to the main control chip 10.

The fire extinguisher drive section 46 includes transistors Q2 and Q3. The collector of the transistor Q2 is grounded, the emitter is connected with the fire extinguisher drive motor 43 through the diode D1, the base of the transistor Q2 is connected with the collector of the transistor Q3 through the resistor R9, the emitter of the transistor Q3 is grounded, and the base is connected with the SEG12 terminal pin of the main control chip 10 through the resistor R11.

the fire extinguishing control unit 2 also comprises a pressure sensor detection unit 44 for detecting the state of a pressure sensor of the fire extinguisher;

the fire extinguisher pressure sensor detection unit 44 comprises a pressure sensor of a fire extinguisher and a detection circuit II, wherein SS in the fire extinguisher pressure sensor is a pressure switch, one end of the pressure sensor of the fire extinguisher is connected with a power supply, and the other end of the pressure sensor of the fire extinguisher is connected with the detection circuit II; the detection circuit II comprises resistors R12-R16, a capacitor C3, diodes D2 and D3, the output end of the fire extinguisher pressure sensor is respectively connected with the cathodes of the diodes D2 and D3 through the resistors and the capacitors, and the anodes of the diodes D2 and D3 are respectively connected with pins PA6 and PA7 of the main control chip.

FIG. 9 is a schematic diagram of the electrical circuitry of the gas valve section, gas valve actuator section and gas valve detection module of the present invention when the gas valve is in the closed position;

wherein 31 is a gas valve part, 32 is a gas valve driving part, and 33 is a gas valve detection module;

in the gas valve part 31, A is a driving motor, and two sides of the driving motor are respectively connected with a circuit consisting of a limit switch, a diode and a resistor; the two poles of the limit switches (SW1 and SW2) are NO and NC, the diodes are DP1 and DP2, and the resistors are RP1 and RP 2; the NO pole of the limit switch SW1 is connected to the resistor RP1 on the limit switch SW2 side through the control signal connection line W3, and the NO pole of the limit switch SW2 is connected to the resistor RP2 on the limit switch SW1 side through the control signal connection line W4.

In the gas valve driving part 32, the PO pins a, b, c, d of the main control chip are signal ports for outputting control commands for opening or closing the gas valve, respectively. The port a is connected with the base of a transistor Q5 through a resistor R37, the emitter of a transistor Q5 is grounded, the collector is connected with the base of a transistor Q6 through a resistor, the emitter of a transistor Q6 is connected with a power supply, and the collector is electrically connected with the collector of a transistor Q7 and a control signal connecting line W1; the b port is connected with a transistor Q7 through a resistor R40, the emitter of the transistor Q7 is grounded, and the collector is electrically connected with the collector of the transistor Q6 and the control signal connecting wire W1; the port c is connected with the base of a transistor Q8 through a resistor R41, the emitter of a transistor Q8 is grounded, the collector is connected with the base of a transistor Q9 through a resistor, the emitter of a transistor Q9 is connected with a power supply, and the collector is connected with the collector of a transistor Q10 and a control signal connecting line W2; the d port is connected to a transistor Q10 through a resistor R44, the emitter of the transistor Q10 is grounded, and the collector is electrically connected to the collector of the transistor Q9 and the control signal connection line W2.

In the gas valve detection module 33, the main control chip BSI terminal pins e and f are signal ports for detecting the state of the gas valve, respectively. The e port is connected with a control signal connecting wire W1 through resistors R5-R8 and a capacitor C1; the f port is connected with the control signal connecting wire W2 through resistors R9-R12 and a capacitor C2.

Fig. 8 is a schematic diagram of the circuit when the gas valve is in an open state. The limit switch SW1 is connected with the NC pole, and the limit switch SW2 is connected with the NO pole. When the system sends an instruction of closing the gas valve, the main control chip 10 outputs high-pressure signals to the ports a and d, and the ports b and c output low pressure; the ports a and d output closing signals to the two limit switches SW1 and SW2 through control signal connecting wires W1 and W2 by a circuit, so that the driving motor is started to move, and the driving motor operates to change the connection state of the two limit switches SW1 and SW 2. The terminal pins e and f of the main control chip 10 determine the state of the driving motor (gas valve) by detecting the voltage difference between the front and the back on the control signal connection wires W1 and W2.

Fig. 9 is a schematic diagram of the circuit when the gas valve is in the closed state. The limit switch SW1 is connected with the NO pole, and the limit switch SW2 is connected with the NC pole. When the system sends an instruction to open the gas valve, the main control chip 10 outputs high-pressure signals to the ports b and c, and the ports a and d output low pressure; the ports b and c output opening signals to the two limit switches SW1 and SW2 through control signal connecting wires W1 and W2 through circuits, so that the driving motor is started to move, and the driving motor operates to change the connection state of the two limit switches SW1 and SW 2. The terminal pins e and f of the main control chip 10 determine the state of the driving motor (gas valve) by detecting the voltage difference between the front and the back on the control signal connection wires W1 and W2.

When the gas valve is in an open or closed state, if the system detects the state of the gas valve, the main control chip 10 outputs high voltage at one of the ports e and f, and outputs a detection result from the other port.

FIG. 11 is a schematic diagram of the timing control of the present invention, when the system issues a command to close the gas valve, signals of no more than 12 seconds are output at ports a and d, wherein a high frequency signal of 6 seconds is output at port a, then a pulse signal of 6 seconds is output at port d, a high frequency signal of 12 seconds is output at port d, and in the time of outputting control signals to ports a and d, the last 1/50 seconds are the time of outputting detection signals at port e or port f; when the system sends a command of opening a gas valve, signals of less than 12 seconds are output at ports b and c, wherein a high-frequency signal of 6 seconds is output at port c, then a pulse signal of 6 seconds is output at port b, a high-frequency signal of 12 seconds is output at port b, and in the time of outputting control signals to ports c and b, the last 1/50 seconds are the time of outputting detection signals at port e or port f;

based on the above technical scheme, the gas valve detection module 33 judges the state of the gas valve by detecting the voltage difference of the limit switches connected to both sides of the gas valve driving motor. The system sets corresponding voltage threshold values for the opening and closing of the gas valve. If the test signal meets the threshold range, the detection unit informs the main control chip of the detection result; if the test signal does not conform to any part of the threshold range, the limit switches at two ends of the valve are in an abnormal state. The detection unit informs the main control chip of the detection result and gives an alarm.

FIG. 10-A is a flow chart of the present invention for closing a gas valve;

the main control chip 10 outputs a gas valve detection signal to the gas valve detection module 33 for gas valve state detection, and the gas valve detection module 33 transmits a detection result signal back to the main control chip 10; if the gas valve signal input into the main control chip 10 indicates that the valve is in an open state, the main control chip 10 outputs a gas valve closing signal to the gas valve part 31 through the gas valve driving part 32 to control the gas valve to close, and the gas valve detection module 33 detects the closing state of the gas valve and transmits the state signal back to the main control chip 10; the main control chip 10 outputs a normal closing signal of the gas valve to the voice output module, and outputs a system state voice signal; if the signal input into the main control chip 10 indicates that the gas valve is in a closed or abnormal state, the main control chip 10 outputs a signal to the voice output module to output a system state voice signal, and the main control chip 10 outputs an alarm signal to the alarm unit 3 to perform sound and light alarm;

FIG. 10-B is a flow chart of the operation of the system of the present invention by the telephony control unit 5;

When the user passes the authentication, the system prompts the user to input a system operation control signal. And prompts the user with voice for the corresponding input code for each command. The operations that the user can perform through the telephone are as follows: closing the gas valve, checking the state of the gas valve, extinguishing fire and ventilating. When the user inputs the corresponding command code, the code signal is transmitted to the main control chip 10 through the telephone signal control unit 5, the main control chip 10 controls the system to execute each instruction, and the main control chip 10 informs the state of the system to the user through the telephone input/output device 24. The user can grasp the system information in time.

Fig. 12 is a general circuit diagram (1) of the present invention.

FIG. 13 is the general circuit diagram (2) of the present invention.

The main control chip 10 in the system is specifically U1 and U3;

the gas valve driving part 32 is connected with pins 26-29 of a main control chip U3; the gas valve detection part 33 is connected with 11 th and 12 th of the main control chip U3;

alarms BJ1 and BJ2 in the alarm unit 3 are respectively connected with pins 15 and 16 of a main control chip U3;

one end of a heat sensor of the fire detection module 41 is grounded, and the other end of the heat sensor is connected with a 14 th pin of a main control chip U3 through a resistor;

the detection port of the detection part 45 of the fire extinguisher driving motor 43 is connected with the 7 th pin of the main control chip U3;

the signal port of the fire extinguisher driving part 46 is connected with the 51 st pin of the main control chip U3;

the signal port of the fire extinguisher pressure sensor detection unit 44 is connected with the 8 th and 9 th pins of the main control chip U3;

the signal port of the ventilation unit 4 is connected with pins 25 and 52 of a main control chip U3;

the telephone signal is input into the 24 th pin of the main control chip U3 through the telephone noise filter 23 and digital-to-analog conversion;

the telephone ring analysis part 25 comprises a ring analysis chip U4, and the ring analysis chip U4 is connected with a main control chip U3;

the telephone voice storage chip 21 is a chip U5, and the 13 th, 14 th, 16 th and 17 th pins of the voice storage chip U5 are respectively connected with the 35 th-38 th pins of the main control chip U3;

the memory chip 14 storing the user authentication password and the system operation control code is a chip V6, and the 5 th pin and the 6 th pin of the chip are connected with the 33 th pin and the 32 th pin of the main control chip U3;

the audio output unit 22 comprises a field voice chip U6, and the voice chip U6 informs the state of the system of the user by voice signals; the 50 th pin of the main control chip U3 is connected with the voice storage chip U6, and the 3 rd and 6 th pins of the voice storage chip U6 are respectively connected with the 6 th and 7 th pins of a signal port CON 10; the signal port CON10 is connected to another signal port CON7 through a data line, and pins 2 and 3 of the signal port CON10 are connected to pins 2 and 3 of the main control chip U3;

in fig. 13, pin No. 1 of the signal port CON7 is connected to a power supply; the No. 4 pin is grounded; the No. 5-7 pin is connected with a loudspeaker SP1 through a circuit; 2. the No. 3 pin is connected with the No. 20 and No. 19 pins of the main control chip U1;

the system also comprises a group of indicator lamps, wherein the indicator lamps are connected with No. 1-10 pins and No. 22-24 pins of the main control chip U1; the indicator light is used for displaying the states and various operations of all parts of the system. Wherein, the No. 23 pin is connected with a power indicator light; the No. 24 pin is connected with a battery indicator light; the No. 1 pin is connected with a system detection indicator lamp; the No. 2 pin is connected with a gas leakage indicator lamp; the No. 5 pin is connected with a pressure state indicator lamp of the fire extinguisher; the No. 6 pin is connected with a prepared fire indicator lamp when the heat-sensitive sensor senses that the external temperature is 100 ℃; the No. 7 pin is connected with a fire extinguishing indicator lamp when the heat-sensitive sensor senses that the outside temperature exceeds 130 ℃; the No. 8 pin is connected with a system starting indicator lamp; and the No. 9 pin and the No. 10 pin are respectively connected with an opening state indicator lamp and a closing state indicator lamp of the gas valve.

The manual switch 15 is a group of switches and is connected with pins 12-14 of the main control chip U1;

in fig. 12, the system further includes a set of battery charging devices and battery detection circuitry;

the battery charging apparatus includes an AC input, a high frequency oscillator (T2) and a diode rectifier bridge.

The battery detection circuit is used for detecting the state of the battery and the state of an external power supply; the battery state is informed to the main control chip through

pins

13 and 31 of the main control chip U3, the pin 30 of the main control chip U3 receives the state signal of the external power supply, the main control chip U3 sends out a battery discharge instruction signal through the pin 54, and detects the state signal for forcing the battery to discharge through the pin 34.

Claims

1. A disaster prevention and fire suppression system comprising: system main control unit and with the gas detection and gas valve control unit (1) that system main control unit is connected, control unit (2) and alarm unit (3) put out a fire, wherein:

A. the system main control unit comprises: a main control chip (10) and a power supply;

B. the gas detection and gas valve control unit (1) comprises:

a. combustible gas detection module (11): the gas detection device comprises a gas detection sensor and a control comparison circuit; the combustible gas detection module (11) is used for detecting the gas leakage condition on site;

b. gas valve control module: the gas valve control module is used for opening or cutting off the gas valve;

C. the fire extinguishing control unit (2) comprises:

a. fire detection module (41): it includes a heat sensing detection sensor; the fire detection module (41) is used for detecting the fire occurrence condition on the spot;

b. a fire extinguishing module: the fire extinguisher comprises a fire extinguisher (42), a fire extinguisher driving motor (43) and a fire extinguisher driving part (46), wherein the fire extinguishing module is used for extinguishing fire on site;

D. the alarm unit (3): the alarm comprises a sound alarm (13) and an optical alarm (12), wherein the sound alarm and the optical alarm are used for carrying out sound and light alarm on site;

the method is characterized in that:

the disaster prevention and fire extinguishing system further comprises: the gas detection and control unit (1) also comprises a gas valve detection module (33), and the system main control unit also comprises a system external control module and a voice output module; wherein:

the gas valve detection module (33) is used for detecting the opening/closing state of the gas valve and informing the main control chip (10) of the detection result;

the system external control module is used for inputting commands outside the system so as to control the system to perform disaster prevention and relief operations, and the external control module inputs the external commands to the main control chip (10) and is controlled by the main control chip (10) through commands; the voice output module comprises a field voice output part and a remote voice output part, wherein the field voice output part comprises a voice storage chip for storing voice signals and a loudspeaker; the remote voice output part comprises a voice storage chip for storing voice signals, a storage chip for storing user authentication passwords and control codes and a remote input/output device;

the gas detection and gas valve control unit (1), the fire extinguishing control unit (2) and the on-site sound and light alarm unit (3) are all connected with the system main control unit, and the main control chip (10) controls and operates all the units.

2. A fire suppression system according to claim 1, wherein: one side of the gas valve detection module (33) is connected with the main control chip (10), the other side of the gas valve detection module is electrically connected with limit switches (SW1, SW2) in the gas valve part (31), and the gas valve detection module (33) consists of two groups of test circuits: one end of each of the two groups of test circuits is connected with a pin of the main control chip (10), and the other end of each of the two groups of test circuits is electrically connected with the limit switches (SW1 and SW2) through lines (W1 and W2); each group of test circuits respectively consists of a resistor and a capacitor; the gas valve detection module (33) judges the state of the gas valve by detecting the voltage difference of limit switches (SW1, SW2) connected to two sides of the gas valve driving motor.

3. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the fire extinguishing control unit (2) also comprises a fire extinguisher driving motor detection part (45) for detecting the state of a driving motor (43) of the fire extinguisher;

the fire extinguisher driving motor detection part (45) comprises a fire extinguisher driving motor (43) and a detection circuit I, wherein one end of the fire extinguisher driving motor (43) is connected with a power supply, and the other end of the fire extinguisher driving motor is connected with the detection circuit I; the detection circuit I comprises a resistor (R6-R8) and a transistor (Q1); the fire extinguisher driving motor (43) is electrically connected with the base electrode of the transistor (Q1) through resistors (R6 and R7), the collector electrode is connected with the signal port of the main control chip (10), the emitter electrode is grounded, and the transistor (Q1) outputs the detection signal of the fire extinguisher driving motor (43) to the main control chip (10);

transistors (Q2 and Q3) are included in a fire extinguisher drive section (46) in the fire extinguishing module; the collector of the transistor (Q2) is grounded, the emitter is connected with the fire extinguisher drive motor (43) through a diode (D1), the base of the transistor (Q2) is connected with the collector of the transistor (Q3) through a resistor (R9), the emitter of the transistor (Q3) is grounded, and the base is connected with the signal port of the main control chip (10) through a resistor (R11); the main control chip (10) transmits a signal for starting the fire extinguisher drive motor (43) to the fire extinguisher drive motor (43) through the fire extinguisher drive part (46).

4. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the fire extinguishing control unit (2) further comprises a pressure sensor detection part (44) for detecting the state of the pressure sensor of the fire extinguisher:

the fire extinguisher pressure sensor detection part (44) comprises a pressure sensor and a detection circuit II of the fire extinguisher, one end of the fire extinguisher pressure sensor is connected with a power supply, and the other end of the fire extinguisher pressure sensor is connected with the detection circuit II; the detection circuit II comprises resistors (R12-R16), a capacitor (C3) and diodes (D2 and D3); the output end of the fire extinguisher pressure sensor is respectively connected with the cathodes of the diodes (D2 and D3) through resistors (R12-R16) and a capacitor (C3), and the anodes of the diodes (D2 and D3) are respectively connected with the signal port of the main control chip.

5. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the system further comprises a ventilation unit (4), the ventilation unit (4) comprising: an air cleanliness detection sensor (51), a ventilator (53), and a ventilator drive motor (52); the air cleanliness detection sensor (51) inputs signals to the main control chip (10), the main control chip (10) outputs ventilation signals to the ventilator driving motor (52), and the ventilator driving motor (52) drives the ventilator (53) to ventilate; the main control chip (10) outputs a signal to the voice output module and outputs a voice signal of the system state.

6. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the system external control module is a group of external command manual switches (15), and the manual switches (15) comprise a gas valve opening command switch, a gas valve closing command switch, a gas valve state detection command switch, a fire extinguisher detection command switch and a ventilation command switch; one end of the external command manual switch (15) is connected with the main control chip (10), and the other end is grounded.

7. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the system external control module is a remote control system operation module, and the remote control system operation module inputs a remote external control command signal into a main control chip (10) through a remote input/output device to carry out operation control on the system; the remote control system operation module is one of a telephone signal control unit or an internet control unit.

8. A disaster prevention and fire extinguishing apparatus according to claim 6 or 7, wherein: the system external control module comprises two parts: one is a group of external command manual switches (15), and the other is a remote control system operation module; the remote control system operation module is a telephone signal control unit (5); the telephone signal control unit (5) comprises: a telephone signal input/output device (24), a telephone noise filter (23), a telephone signal analysis part (25), a telephone voice memory chip (21), and a memory chip (14) storing a user authentication password and a system operation control code;

the telephone signal analysis part (25) comprises a telephone ring control chip and a digital/analog control circuit; the digital/analog control circuit is used for carrying out analog-digital and digital-analog conversion, namely, after converting an externally input analog signal into a digital signal, the digital signal is input into the main control chip (10); simultaneously, converting a digital signal sent by the system into an analog signal received by a user, and outputting the signal;

the telephone noise filter (23) is used for removing noise and interference sound in the telephone;

the telephone voice storage chip (21) is connected with a signal port of the main control chip (10); the telephone voice storage chip (21) stores prompting voice signals and system state signals and is used for informing the voice signals to a user through a telephone input/output device (24);

the pins of the memory chip (14) which stores the user authentication password and the system operation control code are respectively connected with the pins of the main control chip (10);

after the telephone signal passes through the telephone signal input/output device (24) and is processed by the telephone noise filter (23), the telephone signal is analyzed by the telephone signal analysis part (25), the ring meets the system requirement, the main control chip (10) outputs a voice signal for prompting a user to input an authentication password through the telephone signal analysis part (25), the telephone voice storage chip (21) and the telephone input/output device (24), and the main control chip (10) and the memory chip (14) storing the user login authentication password detect an externally input signal; if the user password information is authenticated, prompting the user to input a control signal for system operation, if the user password information does not accord with the system memory information, outputting a voice signal to prompt the user that the input is wrong and requiring to input the password information again, and setting the password input times by the system to be not more than five times.

The other part of the external control module of the system is a group of external command manual switches (15), and the manual switches (15) are arranged on the field operation platform and are used for the user to operate on the field. The manual switch (15) comprises a gas valve opening command switch, a gas valve closing command switch, a gas valve state detection command switch, a fire extinguisher detection command switch and a ventilation command switch; one end of the external command manual switch (15) is connected with the main control chip (10), and the other end is grounded.

9. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the combustible gas detection module (11) comprises a gas detection sensor and a control comparison circuit; the gas detection sensor is a gas sensor; the control comparison circuit comprises: the gas leakage detection circuit comprises a detection circuit (100) for sensing gas leakage, a conversion circuit (200) for converting the level of a gas leakage signal, and a comparison circuit (300) for comparing the gas signal with the converted level with a predetermined standard level;

the comparison circuit (300) comprises: the output end of the comparison amplifier (CP1) is electrically connected with the base electrode of the transistor (Q3), the collector electrode of the comparison amplifier (CP1) is connected with the anode of the diode (D3), the cathode of the diode (D3) is connected with the Zener diode (ZD2) playing a role in voltage stabilization, the cathode of the diode (D3) is also connected with the ground through the capacitor (C7), and a signal output by the Zener diode (ZD2) is input into the main control chip (10) to control alarming or close a valve.

10. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the fire detection module (41) comprises a heat-sensitive detection sensor; the heat sensing detection sensor is a temperature sensor, one end of the temperature sensor is connected with the ground, and the other end of the temperature sensor is connected with a signal port of the main control chip (10) through a resistor.

11. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the sound and light alarm devices in the alarm unit (3) are an indicator light alarm (12) and a sound alarm (13) respectively;

the alarm unit (3) is respectively connected with pins of the main control chip (10);

the on-site voice output part in the voice output module is an audio output unit (22), and the audio output unit (22) is a device which outputs the state information of each part of the system in the on-site way by using voice signals; the audio output unit (22) is connected with the main control chip (10) and comprises a voice storage chip and a loudspeaker;

the timer (54) is used for controlling the time for closing the gas valve; the timer (54) is connected with a pin of the main control chip (10).

12. The disaster prevention and fire extinguishing apparatus according to claim 1, wherein: the system also comprises a group of battery charging devices and a battery detection circuit;

the battery charging device comprises an alternating current input end, a high-frequency oscillator (T2) and a diode rectifier bridge; the battery detection circuit is used for detecting the state of the battery and the state of the external power supply.

13. A disaster prevention and fire extinguishing apparatus as defined in any one of claims 1 to 7 and 9 to 12, wherein: the main control chip (10) is HT48R30A and HT46R63 respectively; the memory chip (14) storing the user authentication password and the system operation control code is 24LC 02B; the telephone ring control chip (U4) is HT 9170C; the telephone voice memory chip (U5) is AP 1840N; the sound output chip (U6) is SIT 8602B.