Intelligent fire extinguishing system for tunnel

Abstract

The invention discloses an intelligent fire-fighting system for a tunnel, and relates to the technical field of fire-fighting alarm, and the system comprises a tunnel fire-fighting data collection and control terminal which is arranged in the tunnel and is used for collecting real-time information parameters of a tunnel site; the fire-fighting data acquisition and control terminal comprises a wireless smoke sensing alarm, a temperature sensor, a combustible gas alarm, a multiplexing switch, a signal preprocessing module, a controller module, an audible and visual alarm, a smoke exhaust module, a water spraying module, a video monitoring module, a signal lamp indication module, a voice reminding module, a wireless communication module and a memory module; a clock module, a positioning module and a power supply module; according to the intelligent fire extinguishing system for the tunnel, the Internet of Things communication technology is adopted, a sensor is combined, the position of a fire disaster can be automatically sensed, fire extinguishing and escape equipment is controlled in a centralized and unified mode, and the functions of automatic alignment and fire extinguishing of an ignition point, range cooling, evacuation of personnel in the tunnel for escape and closing of a tunnel entrance are achieved; therefore, casualties are reduced, and fire accidents are prevented from being expanded.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent fire alarm technology, and in particular relates to an intelligent fire protection system for tunnels. Background Art

[0002] Many old buildings in my country are not equipped with fire alarms or their firefighting facilities are outdated and backward, and they are in urgent need of modernization so that the alarm information can be uploaded to the alarm center in time. Firefighting has always been one of the important tasks of the country to ensure the safety of people's livelihood. With the advent of the Internet era, the current firefighting system has prominent closedness, the inability to transmit fire alarm information to each other, and the difficulty in forming a complete network system. These problems are the focus of current research in the field of smart firefighting.

[0003] With the increase in the number of tunnels and the occurrence of various accidents, tunnel safety has gradually become a hot topic. In addition to traffic accidents, there is another type of serious accident, that is, fire accidents in tunnels! The tunnel space is relatively closed. Once a fire accident occurs, many vehicles will be stranded, unable to move forward or backward... The consequences are serious, so the fire protection issue has received increasing attention. In recent years, many vicious accidents have occurred in tunnel sections in some parts of the country, with serious consequences and great social impact, exposing many deficiencies in tunnel safety management and emergency response to emergencies.

[0004] When a fire occurs in a tunnel, the traditional fire alarm system generally relies on manual supervision and control of the fire. The main method is to manually take out firefighting equipment to extinguish the fire. It cannot detect and take firefighting measures in time, and it is extremely labor-intensive and resource-intensive. Its mobility, timeliness and operability are poor.

[0005] In addition, since other electromechanical devices installed in the tunnel (such as fans, information boards, lane indicators, in-tunnel broadcasts, etc.) have independent control systems, when an accident occurs in the tunnel, it can only rely on manual control of each module, which takes a long time and can easily lead to greater losses.

[0006] Therefore, we made improvements to this and proposed an intelligent fire fighting system for tunnels. Summary of the invention

[0007] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and propose an intelligent fire-fighting system for tunnels. The system adopts Internet of Things communication technology and combines sensors to automatically sense the location of a fire and centrally and uniformly control fire-fighting and escape equipment. It also realizes the functions of automatic extinguishing of the fire point, range cooling, and guiding the escape of people in the tunnel and closing the tunnel entrance, thereby reducing casualties and avoiding the expansion of fire accidents.

[0008] The present invention adopts the following technical solutions to solve the above technical problems:

[0009] An intelligent fire protection system for a tunnel comprises a tunnel fire protection data collection and control terminal which is arranged in the tunnel and used for collecting real-time information parameters of the tunnel site; the tunnel fire protection data collection and control terminal comprises a wireless smoke alarm, a temperature sensor, a combustible gas alarm, a multiplexing switch, a signal preprocessing module, a controller module, an audible and visual alarm, a smoke exhaust module, a water spray module, a video monitoring module, a signal light indication module, a voice reminder module, a wireless communication module, a memory module, a clock module, a positioning module and a power supply module; the wireless smoke alarm, the combustible gas alarm and the temperature sensor are respectively connected to the controller module through an interface circuit module and a data preprocessing module in sequence, the LoRa communication module, the memory module, the clock module, the audible and visual alarm, the GPRS module and the power supply module are respectively connected to a microcontroller module through a multiplexing switch, the signal preprocessing module is connected to the controller module, the audible and visual alarm, the smoke exhaust module, the water spray module, the video monitoring module, the signal light indication module, the voice reminder module, the wireless communication module, the memory module, the clock module, the positioning module and the power supply module are respectively connected to the controller module.

[0010] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the video monitoring module includes a video acquisition module and a video cache module. The video cache module includes an input FIFO module, a DDR controller, an image parameter calculation module, a DDR2 SDRAM and an output FIFO module. The output end of the video acquisition module is connected to the input end of the input FIFO module, the output end of the input FIFO module is connected to the input end of the DDR2 SDRAM, the output end of the DDR2SDRAM is connected to the input end of the output FIFO module, the output end of the image parameter calculation module is also connected to the input end of the DDR2 SDRAM through the DDR controller, and the output end of the output FIFO module is connected to the input end of the controller module.

[0011] As a further preferred embodiment of the intelligent fire fighting system for tunnels of the present invention, the water spray module comprises a plurality of water spray heads connected by water spray pipes, the water spray heads are arranged in different areas in the tunnel, and switch valves are provided on the water spray heads.

[0012] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the power supply module includes a mains power module, a charging control circuit, a voltage stabilizing circuit, and a rechargeable battery; the mains power module is connected to the rechargeable battery through the charging control circuit, the rechargeable battery is connected to the controller module, and the mains power module is connected to the controller module through the voltage stabilizing circuit.

[0013] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the charging control circuit comprises a signal control terminal, a charging power supply terminal, an equipment power supply terminal, a battery terminal, a transistor, a first MOS transistor and a second MOS transistor; wherein the charging power supply terminal is grounded through a first resistor and a second resistor connected in series; the base of the transistor is respectively connected to the signal control terminal and the charging power supply terminal, the collector of the transistor is connected to the gate of the second MOS transistor through a fourth resistor, and is also connected to the source of the first MOS transistor through a third resistor, and the emitter of the transistor is grounded; the source of the second MOS transistor is connected to the charging power supply terminal through a first diode, and the drain is connected to the equipment power supply terminal; the source of the first MOS transistor is connected to the charging power supply terminal through a first diode, the gate is connected to the connection point of the first resistor and the second resistor, and the drain is connected to the battery terminal.

[0014] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the wireless data transmission module comprises an antenna ANT1, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16, a resistor R221, a resistor R22, an inductor L11, an inductor L12, a chip U1, a chip U2, a chip U3, and a VDD terminal, wherein the antenna ANT1 is respectively connected to one end of the inductor L11 and one end of the capacitor C16, the other end of the inductor L11 is grounded, the other end of the capacitor C16 is respectively connected to one end of the inductor L12 and a pin 2 of the chip U1, the other end of the inductor L12 is grounded, the pin 3 of the chip U1 and the pin 4 of the chip U1 are respectively connected to one end of the capacitor C14, one end of the capacitor C15 and the VDD terminal, the other end of the capacitor C14 and the other end of the capacitor C15 are respectively grounded, and the pin 1 of the chip U1 is respectively connected to one end of the capacitor C13, the VDD terminal, the pin 30 of the chip U1 and the chip U3. Pin 29 of chip U1 and the other end of capacitor C13 are grounded, pin 31 of chip U1 is connected to one end of resistor R221, and the other end of resistor R221 is grounded, pin 28 of chip U1 is respectively connected to one end of capacitor C11 and pin 1 of chip U2, pin 2 of chip U2 is grounded, the other end of capacitor C11 is grounded, pin 4 of chip U2 is grounded, pin 3 of chip U2 is respectively connected to one end of capacitor C12 and pin 27 of chip U1, and the other end of capacitor C12 is grounded, pin 18 of chip U1 is connected to pin 7 of chip U3, pin 19 of chip U1 is connected to pin 3 of chip U3, pin 20 of chip U1 is connected to pin 1 of chip U3, pin 21 of chip U1 is connected to pin 6 of chip U3 through resistor R22, pin 22 of chip U1 is connected to pin 2 of chip U3, pin 23 of chip U1 is connected to pin 5 of chip U3, and pin 17 of chip U1 is respectively connected to pin 11 of chip U1 and the VDD end.

[0015] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the signal preprocessing module comprises an amplifier circuit and a dual operational amplifier bandpass filter, the amplifier circuit is composed of an OPA277 operational amplifier and a resistor and a capacitor, and the dual operational amplifier bandpass filter is composed of two OPA277 operational amplifiers; specifically comprising a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first operational amplifier, a second operational amplifier, and a third operational amplifier, wherein the signal input -IN terminal is connected to one end of the first resistor, the other end of the first resistor is respectively connected to one end of the first capacitor, one end of the third resistor and the negative power supply pin of the first operational amplifier, the other end of the first capacitor is respectively connected to the other end of the third resistor and the output pin of the first operational amplifier, and the signal The input +IN terminal is connected to one end of the second resistor, the other end of the second resistor is respectively connected to the positive power supply pin of the first operational amplifier, one end of the fourth resistor, and one end of the second capacitor, the other end of the second capacitor is connected to the other end of the fourth resistor and grounded, the output pin of the first operational amplifier is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to the positive power supply pin of the second operational amplifier, the negative power supply pin of the second operational amplifier is connected to the negative power supply pin of the third operational amplifier, the positive power supply pin of the third operational amplifier is respectively connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the ninth resistor is grounded, the other end of the eighth resistor is respectively connected to one end of the seventh resistor and the output pin of the second operational amplifier, the other end of the seventh resistor is connected to one end of the fourth capacitor, the other end of the fourth capacitor is respectively connected to one end of the ninth resistor, the other end of the ninth resistor is connected to one end of the third capacitor, and the other end of the third capacitor is grounded.

[0016] As a further preferred embodiment of an intelligent fire fighting system for a tunnel of the present invention, the clock module includes a clock chip DS3231, a capacitor C4, a resistor R25, a resistor R26, a resistor R27, and a resistor R28. The VCC end is respectively connected to one end of the resistor R25 and one end of the resistor R26, the other end of the resistor R25 is connected to the SDA end of the clock chip DS3231, the other end of the resistor R26 is connected to the SCL end of the clock chip DS3231, the VDD end is respectively connected to one end of the resistor R27, one end of the resistor R28, one end of the capacitor C4, and port 2 of the clock chip DS3231, the other end of the resistor R27 is connected to port 1 of the clock chip DS3231, the other end of the resistor R28 is connected to port 3 of the clock chip DS3231, and the other end of the capacitor C4 is grounded.

[0017] As a further preferred solution of the intelligent fire fighting system for tunnels of the present invention, the memory module adopts DDR3 memory.

[0018] As a further preferred solution of the intelligent fire fighting system for tunnels of the present invention, the controller module adopts a microprocessor with a chip model of SPCE061A.

[0019] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0020] The present invention discloses an intelligent fire fighting system for tunnels, comprising a tunnel fire fighting data collection and control terminal which is arranged in the tunnel and is used to collect real-time information parameters of the tunnel site; the tunnel fire fighting data collection and control terminal comprises a wireless smoke alarm, a temperature sensor, a combustible gas alarm, a multiplex switch, a signal preprocessing module, a controller module, an audible and visual alarm, a smoke exhaust module, a water spray module, a video monitoring module, a signal light indication module, a voice reminder module, a wireless communication module, a memory module, a clock module, a positioning module and a power supply module; the intelligent fire fighting system for tunnels adopts Internet of Things communication technology and combines with sensors, so that it can automatically sense the location of fire, and centrally and uniformly control fire fighting and escape equipment, and realizes the functions of automatic positioning fire extinguishing at the fire point, range cooling, and guiding the escape of people in the tunnel and closing the tunnel entrance, thereby reducing casualties and avoiding the expansion of fire accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is a schematic diagram of the overall structure of an intelligent fire fighting system for tunnels according to the present invention;

[0023] Figure 2 It is a structural principle diagram of the video cache module of the present invention;

[0024] Figure 3 It is a structural principle diagram of the power module of the present invention;

[0025] Figure 4 It is a circuit of the charging control circuit of the present invention;

[0026] Figure 5 is a circuit diagram of a wireless data transmission module of the present invention;

[0027] Figure 6 is a circuit diagram of a signal preprocessing module of the present invention;

[0028] Figure 7 It is a circuit diagram of the clock module of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings:

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] An intelligent fire fighting system for a tunnel comprises a tunnel fire fighting data acquisition and control terminal arranged in the tunnel for collecting real-time information parameters of the tunnel site; Figure 1 As shown, the fire protection data acquisition and control terminal includes a wireless smoke alarm, a temperature sensor, a combustible gas alarm, a multiplexing switch, a signal preprocessing module, a controller module, an audible and visual alarm, a smoke exhaust module, a water spray module, a video monitoring module, a signal light indication module, a voice reminder module, a wireless communication module, a memory module, a clock module, a positioning module and a power supply module; the wireless smoke alarm, the combustible gas alarm and the temperature sensor are respectively connected to the controller module through the interface circuit module and the data preprocessing module in turn, the LoRa communication module, the memory module, the clock module, the audible and visual alarm, the GPRS module and the power supply module are respectively connected to the microcontroller module through the multiplexing switch and the signal preprocessing module is connected to the controller module, the audible and visual alarm, the smoke exhaust module, the water spray module, the video monitoring module, the signal light indication module, the voice reminder module, the wireless communication module, the memory module, the clock module, the positioning module and the power supply module are respectively connected to the controller module.

[0032] The video monitoring module includes a video acquisition module and a video buffer module. Figure 2 As shown, the video cache module includes an input FIFO module, a DDR controller, an image parameter calculation module, a DDR2 SDRAM and an output FIFO module. The output end of the video acquisition module is connected to the input end of the input FIFO module, the output end of the input FIFO module is connected to the input end of the DDR2SDRAM, the output end of the DDR2 SDRAM is connected to the input end of the output FIFO module, the output end of the image parameter calculation module is also connected to the input end of the DDR2 SDRAM through the DDR controller, and the output end of the output FIFO module is connected to the input end of the controller module.

[0033] The water spray module comprises a plurality of water spray heads connected by water spray pipes. The water spray heads are arranged in different areas in the tunnel and are provided with switch valves.

[0034] like Figure 3 As shown, the power supply module includes a mains power module, a charging control circuit, a voltage stabilizing circuit, and a rechargeable battery; the mains power module is connected to the rechargeable battery through the charging control circuit, the rechargeable battery is connected to the controller module, and the mains power module is connected to the controller module through the voltage stabilizing circuit.

[0035] like Figure 4 As shown, the charging control circuit includes a signal control terminal, a charging power supply terminal, a device power supply terminal, a battery terminal, a triode, a first MOS transistor and a second MOS transistor; wherein the charging power supply terminal is grounded through a first resistor and a second resistor connected in series; the base of the triode is respectively connected to the signal control terminal and the charging power supply terminal, the collector of the triode is connected to the gate of the second MOS transistor through a fourth resistor, and is also connected to the source of the first MOS transistor through a third resistor, and the emitter of the triode is grounded; the source of the second MOS transistor is connected to the charging power supply terminal through a first diode, and the drain is connected to the device power supply terminal; the source of the first MOS transistor is connected to the charging power supply terminal through a first diode, the gate is connected to the connection point of the first resistor and the second resistor, and the drain is connected to the battery terminal.

[0036] like Figure 5As shown, the wireless data transmission module includes an antenna ANT1, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16, a resistor R221, a resistor R22, an inductor L11, an inductor L12, a chip U1, a chip U2, a chip U3, and a VDD terminal, wherein the antenna ANT1 is respectively connected to one end of the inductor L11 and one end of the capacitor C16, the other end of the inductor L11 is grounded, the other end of the capacitor C16 is respectively connected to one end of the inductor L12 and a pin 2 of the chip U1, the other end of the inductor L12 is grounded, the pin 3 of the chip U1 and the pin 4 of the chip U1 are respectively connected to one end of the capacitor C14, one end of the capacitor C15 and the VDD terminal, the other end of the capacitor C14 and the other end of the capacitor C15 are respectively grounded, the pin 1 of the chip U1 is respectively connected to one end of the capacitor C13, the VDD terminal, the pin 30 of the chip U1 and the pin 29 of the chip U1, the capacitor C The other end of 13 is grounded, pin 31 of chip U1 is connected to one end of resistor R221, the other end of resistor R221 is grounded, pin 28 of chip U1 is respectively connected to one end of capacitor C11 and pin 1 of chip U2, pin 2 of chip U2 is grounded, the other end of capacitor C11 is grounded, pin 4 of chip U2 is grounded, pin 3 of chip U2 is respectively connected to one end of capacitor C12 and pin 27 of chip U1, the other end of capacitor C12 is grounded, pin 18 of chip U1 is connected to pin 7 of chip U3, pin 19 of chip U1 is connected to pin 3 of chip U3, pin 20 of chip U1 is connected to pin 1 of chip U3, pin 21 of chip U1 is connected to pin 6 of chip U3 through resistor R22, pin 22 of chip U1 is connected to pin 2 of chip U3, pin 23 of chip U1 is connected to pin 5 of chip U3, and pin 17 of chip U1 is respectively connected to pin 11 of chip U1 and VDD end.

[0037] like Figure 6As shown, the signal preprocessing module includes an amplifier circuit and a dual operational amplifier bandpass filter, the amplifier circuit is composed of an OPA277 operational amplifier and a resistor and capacitor, and the dual operational amplifier bandpass filter is composed of two OPA277 operational amplifiers; specifically includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first operational amplifier, a second operational amplifier, and a third operational amplifier, wherein the signal input -IN terminal is connected to one end of the first resistor, the other end of the first resistor is respectively connected to one end of the first capacitor, one end of the third resistor and the negative power supply pin of the first operational amplifier, the other end of the first capacitor is respectively connected to the other end of the third resistor and the output pin of the first operational amplifier, and the signal input +IN terminal is connected to the second capacitor The output pin of the first operational amplifier is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to the positive power pin of the second operational amplifier, the negative power pin of the second operational amplifier is connected to the negative power pin of the third operational amplifier, the positive power pin of the third operational amplifier is respectively connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the ninth resistor is grounded, the other end of the eighth resistor is respectively connected to one end of the seventh resistor and the output pin of the second operational amplifier, the other end of the seventh resistor is connected to one end of the fourth capacitor, the other end of the fourth capacitor is respectively connected to one end of the ninth resistor, the other end of the ninth resistor is connected to one end of the third capacitor, and the other end of the third capacitor is grounded.

[0038] The signal processing module of the present invention amplifies and filters the data taken by the array sensor and then inputs it into the signal conversion circuit, which greatly reduces the signal noise and signal loss in the measurement. The amplification circuit part is composed of an OPA277 operational amplifier and a resistor and capacitor. The circuit is a typical differential amplifier circuit. At the same time, C3 and R6, C4 and R7 form a low-pass filter. The dual op amp bandpass filter is composed of two OPA277 operational amplifiers. The Q value and center frequency of the bandpass filter of this design are adjustable. The resonant frequency of the circuit can be adjusted by adjusting R9, and the Q value of the circuit can be adjusted by adjusting R8. It is worth noting that after the sensor collects the signal, the multiplexed analog switch selects the output to the signal processing circuit and then inputs it into AD7794 for digital-to-analog conversion, converting the analog signal into a digital signal, which is conducive to long-distance wireless transmission of the signal.

[0039] like Figure 7As shown, the clock module includes a clock chip DS3231, a capacitor C4, a resistor R25, a resistor R26, a resistor R27, and a resistor R28. The VCC end is respectively connected to one end of the resistor R25 and one end of the resistor R26, the other end of the resistor R25 is connected to the SDA end of the clock chip DS3231, the other end of the resistor R26 is connected to the SCL end of the clock chip DS3231, the VDD end is respectively connected to one end of the resistor R27, one end of the resistor R28, one end of the capacitor C4 and port 2 of the clock chip DS3231, the other end of the resistor R27 is connected to port 1 of the clock chip DS3231, the other end of the resistor R28 is connected to port 3 of the clock chip DS3231, and the other end of the capacitor C4 is grounded.

[0040] The clock circuit is designed and implemented with the low-cost, high-precision real-time clock chip DS3231. The register address of DS3231 is 00h~12h. It obtains clock and Hitachi information by reading the appropriate register bytes. It obtains clock and calendar information by writing the appropriate register bytes. It sets or initializes clock and calendar data by writing the appropriate register bytes.

[0041] The memory module adopts DDR3 memory.

[0042] The core device of the control module of this system is the STC89C52 single-chip microcomputer. The STC89C52 belongs to the 51 series single-chip microcomputer. Compared with other 51 series single-chip microcomputers such as STC89C51, it has the following advantages: low energy consumption, fast running speed, ability to realize ISP online programming, strong anti-interference ability and two 16-bit programmable timer counters; and the STC89C52 instruction system is fully compatible with the general 51 series single-chip microcomputer instruction system. It contains 8k Flash program storage space and 512bytes of random access memory (RAM), and its price is relatively low, and the peripheral circuit of its minimum system is simple.

[0043] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0044] The above embodiments are only for explaining the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the present invention. The above embodiments of the present invention are described in detail, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention.

Claims

1. An intelligent fire fighting system for a tunnel, characterized in that: The invention comprises a tunnel fire data acquisition and control terminal which is arranged in the tunnel and used for collecting real-time information parameters of the tunnel site; the tunnel fire data acquisition and control terminal comprises a wireless smoke alarm, a temperature sensor, a combustible gas alarm, a multiplexing switch, a signal preprocessing module, a controller module, an audible and visual alarm, a smoke exhaust module, a water spray module, a video monitoring module, a signal light indication module, a voice reminder module, a wireless communication module, a memory module, a clock module, a positioning module and a power supply module; the wireless smoke alarm, the combustible gas alarm and the temperature sensor are respectively connected to the controller module through the interface circuit module and the data preprocessing module in sequence, the LoRa communication module, the memory module, the clock module, the audible and visual alarm, the GPRS module and the power supply module are respectively connected to the microcontroller module through the multiplexing switch and the signal preprocessing module, the audible and visual alarm, the smoke exhaust module, the water spray module, the video monitoring module, the signal light indication module, the voice reminder module, the wireless communication module, the memory module, the clock module, the positioning module and the power supply module are respectively connected to the controller module.

2. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The video monitoring module comprises a video acquisition module and a video cache module. The video cache module comprises an input FIFO module, a DDR controller, an image parameter calculation module, a DDR2 SDRAM and an output FIFO module. The output end of the video acquisition module is connected to the input end of the input FIFO module, the output end of the input FIFO module is connected to the input end of the DDR2 SDRAM, the output end of the DDR2SDRAM is connected to the input end of the output FIFO module, the output end of the image parameter calculation module is also connected to the input end of the DDR2 SDRAM through the DDR controller, and the output end of the output FIFO module is connected to the input end of the controller module.

3. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The water spray module comprises a plurality of water spray heads connected by water spray pipes. The water spray heads are arranged in different areas in the tunnel and are provided with switch valves.

4. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The power supply module comprises a mains module, a charging control circuit, a voltage stabilizing circuit, and a rechargeable battery; the mains module is connected to the rechargeable battery through the charging control circuit, the rechargeable battery is connected to the controller module, and the mains module is connected to the controller module through the voltage stabilizing circuit.

5. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The charging control circuit comprises a signal control terminal, a charging power terminal, a device power terminal, a battery terminal, a transistor, a first MOS transistor and a second MOS transistor; wherein the charging power terminal is grounded through a first resistor and a second resistor connected in series; the base of the transistor is respectively connected to the signal control terminal and the charging power terminal, the collector of the transistor is connected to the gate of the second MOS transistor through a fourth resistor, and is also connected to the source of the first MOS transistor through a third resistor, and the emitter of the transistor is grounded; the source of the second MOS transistor is connected to the charging power terminal through a first diode, and the drain is connected to the device power terminal; the source of the first MOS transistor is connected to the charging power terminal through a first diode, the gate is connected to the connection point of the first resistor and the second resistor, and the drain is connected to the battery terminal.

6. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The wireless data transmission module includes an antenna ANT1, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16, a resistor R221, a resistor R22, an inductor L11, an inductor L12, a chip U1, a chip U2, a chip U3, and a VDD terminal, wherein the antenna ANT1 is respectively connected to one end of the inductor L11 and one end of the capacitor C16, the other end of the inductor L11 is grounded, the other end of the capacitor C16 is respectively connected to one end of the inductor L12 and a pin 2 of the chip U1, the other end of the inductor L12 is grounded, the pin 3 of the chip U1 and the pin 4 of the chip U1 are respectively connected to one end of the capacitor C14, one end of the capacitor C15 and the VDD terminal, the other end of the capacitor C14 and the other end of the capacitor C15 are respectively grounded, the pin 1 of the chip U1 is respectively connected to one end of the capacitor C13, the VDD terminal, the pin 30 of the chip U1 and the pin 29 of the chip U1, the capacitor C1 The other end of chip U3 is grounded, pin 31 of chip U1 is connected to one end of resistor R221, the other end of resistor R221 is grounded, pin 28 of chip U1 is respectively connected to one end of capacitor C11 and pin 1 of chip U2, pin 2 of chip U2 is grounded, the other end of capacitor C11 is grounded, pin 4 of chip U2 is grounded, pin 3 of chip U2 is respectively connected to one end of capacitor C12 and pin 27 of chip U1, the other end of capacitor C12 is grounded, pin 18 of chip U1 is connected to pin 7 of chip U3, pin 19 of chip U1 is connected to pin 3 of chip U3, pin 20 of chip U1 is connected to pin 1 of chip U3, pin 21 of chip U1 is connected to pin 6 of chip U3 through resistor R22, pin 22 of chip U1 is connected to pin 2 of chip U3, pin 23 of chip U1 is connected to pin 5 of chip U3, and pin 17 of chip U1 is respectively connected to pin 11 of chip U1 and VDD end.

7. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The signal preprocessing module includes an amplifier circuit and a dual operational amplifier bandpass filter, wherein the amplifier circuit is composed of an OPA277 operational amplifier and a resistor and capacitor, and the dual operational amplifier bandpass filter is composed of two OPA277 operational amplifiers; specifically, it includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first operational amplifier, a second operational amplifier, and a third operational amplifier, wherein the signal input -IN terminal is connected to one end of the first resistor, the other end of the first resistor is respectively connected to one end of the first capacitor, one end of the third resistor and the negative power supply pin of the first operational amplifier, the other end of the first capacitor is respectively connected to the other end of the third resistor and the output pin of the first operational amplifier, and the signal input +IN terminal is connected to the One end of the second resistor is respectively connected to the positive power pin of the first operational amplifier, one end of the fourth resistor, and one end of the second capacitor. The other end of the second capacitor is connected to the other end of the fourth resistor and is grounded. The output pin of the first operational amplifier is connected to one end of the fifth resistor. The other end of the fifth resistor is connected to the positive power pin of the second operational amplifier. The negative power pin of the second operational amplifier is connected to the negative power pin of the third operational amplifier. The positive power pin of the third operational amplifier is respectively connected to one end of the eighth resistor and one end of the ninth resistor. The other end of the ninth resistor is grounded. The other end of the eighth resistor is respectively connected to one end of the seventh resistor and the output pin of the second operational amplifier. The other end of the seventh resistor is connected to one end of the fourth capacitor. The other end of the fourth capacitor is respectively connected to one end of the ninth resistor. The other end of the ninth resistor is connected to one end of the third capacitor. The other end of the third capacitor is grounded.

8. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The clock module includes a clock chip DS3231, a capacitor C4, a resistor R25, a resistor R26, a resistor R27, and a resistor R28. The VCC end is respectively connected to one end of the resistor R25 and one end of the resistor R26, the other end of the resistor R25 is connected to the SDA end of the clock chip DS3231, the other end of the resistor R26 is connected to the SCL end of the clock chip DS3231, the VDD end is respectively connected to one end of the resistor R27, one end of the resistor R28, one end of the capacitor C4, and port 2 of the clock chip DS3231, the other end of the resistor R27 is connected to port 1 of the clock chip DS3231, the other end of the resistor R28 is connected to port 3 of the clock chip DS3231, and the other end of the capacitor C4 is grounded.

9. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The memory module adopts DDR3 memory.

10. The intelligent fire fighting system for tunnels according to claim 1, characterized in that: The controller module adopts a microprocessor with a chip model of SPCE061A.

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