Vehicle-mounted fire extinguishing system and method based on cable identification and fire location

Abstract

The present invention provides a vehicle-mounted fire extinguishing system and method based on cable identification and fire location, including: a fire extinguishing control box, a communication cable, a drive cable, a pipeline, a fire extinguishing bottle, a flame detector and a nozzle; the flame detector determines its own position information, and transmits the fire alarm and position information through the communication cable; the fire extinguishing control box drives the corresponding solenoid valve of the corresponding fire extinguishing bottle through the drive cable, and controls the corresponding nozzle to spray the fire extinguishing agent through the pipeline; after the fire alarm is lifted, the flame detector sends the fire extinguishing information and position information through the communication cable; the fire extinguishing control box closes the corresponding fire extinguishing bottle solenoid valve through the drive cable and stops spraying the fire extinguishing agent. The present invention changes the previous vehicle fire extinguishing system that adopts a full coverage and high energy consumption fire extinguishing method due to the inability to locate, and accurately locates the fire area, providing a more efficient and energy-saving fire extinguishing measure for the special vehicle fire extinguishing system.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle fire fighting equipment, and in particular, relates to a vehicle-mounted fire extinguishing system and method based on cable identification and fire location. Background Art

[0002] Vehicle fire extinguishing systems play a vital role in vehicle safety, the safety of passengers and drivers, and preventing fires from spreading to the surrounding environment. They are generally used for fire detection and extinguishing in the power compartment, passenger compartment, and mission compartment of special vehicles. Traditional fire extinguishing systems cannot locate fires. When any flame sensor in the system reports a fire, the system performs full-coverage fire extinguishing. However, this fire extinguishing method has low efficiency in the use of fire extinguisher bottles, and the number of fire extinguishing operations is limited by the number of installed fire extinguisher bottles. Since a vehicle is usually equipped with at most 3 fire extinguisher bottles, and each fire extinguishing requires spraying 1 to 3 fire extinguisher bottles depending on the fire extinguishing situation, a single replenishment can complete at most 3 fire extinguishing tasks.

[0003] Patent document "A vehicle-mounted automatic fire extinguishing system" (CN105498120A) discloses the installation of flame detectors at different locations to locate flames, but it does not provide a method for locating the detectors. Patent document "Vehicle-mounted precise positioning fire extinguishing system" (CN219167606U) discloses the use of two matrix sensors in temperature-light detectors to determine the flame position based on coordinate coincidence information. The flame position is determined based on the known detector positions, but it also does not mention the method for the temperature-light detector to determine its own position.

[0004] That is to say, in the prior art, detectors are generally unable to determine their own positions. The location information attached to the detector needs to be configured after the detector confirms the installation position, and the corresponding software information is written into the detector firmware, or the location information is written into the detector in advance, and the use position of each detector is marked before it is sent to the user for use. The detector is not universal.

[0005] Therefore, there is a need for a vehicle-mounted fire extinguishing system that can automatically identify the installation location information of the detector, accurately locate the fire, implement fire extinguishing tasks in a targeted manner, and be more efficient and energy-saving. Summary of the invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a vehicle-mounted fire extinguishing system and method based on cable identification and fire location.

[0007] According to the present invention, a vehicle-mounted fire extinguishing system based on cable identification and fire location includes: a fire extinguishing control box, a communication cable, a drive cable, a pipeline, a fire extinguishing bottle, a flame detector and a nozzle.

[0008] When a fire occurs, the flame detector determines its own position information, obtains the fire alarm and position information, and transmits it through the communication cable;

[0009] The fire extinguishing control box drives the corresponding solenoid valve of the corresponding fire extinguishing bottle through the driving cable according to the fire alarm and location information;

[0010] The corresponding solenoid valve controls the corresponding nozzle to spray the fire extinguishing agent through the pipeline;

[0011] After the fire alarm is lifted, the flame detector sends fire extinguishing information and location information via the communication cable;

[0012] According to the fire extinguishing information and location information, the fire extinguishing control box closes the corresponding fire extinguisher bottle solenoid valve through the drive cable and stops spraying the fire extinguishing agent.

[0013] Preferably, there are two fire extinguisher bottles, including a fire extinguisher bottle (1) and a fire extinguisher bottle (2).

[0014] There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F.

[0015] There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F.

[0016] The communication cable is a CAN communication bus.

[0017] The fire extinguisher bottle (1) has three solenoid valves, namely solenoid valve A, solenoid valve B and solenoid valve C.

[0018] The fire extinguisher bottle (2) has three solenoid valves, namely a solenoid valve D, a solenoid valve E and a solenoid valve F.

[0019] Preferably, the communication cable includes GA1, AD1, Q1, R1, R2, R3, HVCC and a plug.

[0020] The GA1 is the microcontroller control terminal and outputs a high level.

[0021] The AD1 is a collection port.

[0022] The Q1 is a triode, and its model is 5401.

[0023] The R2 is a pull-up resistor, and its resistance is 10 kΩ.

[0024] The R3 is a current limiting resistor, and its resistance is 1 kΩ.

[0025] The HVCC is a power input terminal, and its voltage is 3.3V.

[0026] The R1 is a 10 kΩ resistor connected in series with the resistance of the plug of the communication cable.

[0027] Preferably, a resistor of corresponding resistance is welded between the plug pins of the flame detector to which the plug of the communication cable is connected.

[0028] The flame detectors A, B, C, D, E, and F correspond to resistors with resistance values ​​of 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ, respectively.

[0029] The number marks on the plugs correspond to the corresponding positions in the vehicle.

[0030] The corresponding method is that the flame detector A plug and the flame detector D plug are respectively placed on both sides of the power cabin, the flame detector B plug and the flame detector E plug are respectively placed on both sides of the crew cabin, and the flame detector C plug and the flame detector F plug are respectively placed on both sides of the mission cabin.

[0031] The nozzles A and D are respectively placed on both sides of the power cabin, the nozzles B and E are respectively placed on both sides of the crew cabin, and the nozzles C and F are respectively placed on both sides of the mission cabin.

[0032] The communication cable is connected to the fire extinguishing control box and the flame detector.

[0033] The solenoid valve is connected to the spray head through a pipeline.

[0034] Preferably, the flame detector determines its own position information by reading the AD1 value after the resistor voltage is divided in the communication cable plug, and reports the fire alarm and position information through the communication cable;

[0035] After the fire extinguishing control box receives the fire alarm and location information transmitted by the communication cable, it drives the solenoid valve corresponding to the fire extinguishing bottle through the drive cable to start, and controls the fire extinguishing agent to spray the fire extinguishing agent to the corresponding fire alarm area through the pipeline.

[0036] The plug pin (3) of the flame detector is connected to AD1, and the plug pin (4) is connected to GND.

[0037] The position information is the number of the connected plug.

[0038] In the judgment, when the AD value is 682, the position is judged to be the flame detector A plug, when the AD value is 1309, the position is judged to be the flame detector B plug, when the AD value is 2408, the position is judged to be the flame detector C plug, when the AD value is 2457, the position is judged to be the flame detector D plug, when the AD value is 2730, the position is judged to be the flame detector E plug, and when the AD value is 3377, the position is judged to be the flame detector F plug.

[0039] The AD1 value is the voltage across R1 after Q1 is turned on, U r1 =U HVCC R1 / (R1+R X);

[0040] Among them, R X Indicates the resistance value in the cable plug;

[0041] U r1 Indicates the voltage at the flame detector collection end;

[0042] U HVCC Indicates the input voltage.

[0043] According to a vehicle-mounted fire extinguishing method based on cable identification and fire location provided by the present invention, a fire is extinguished by using the vehicle-mounted fire extinguishing system based on cable identification and fire location, and the method comprises:

[0044] Step S1: When a fire occurs, the flame detector determines its own position information;

[0045] Step S2: The flame detector obtains fire alarm and location information and transmits it through a communication cable;

[0046] Step S3: The fire extinguishing control box drives the corresponding solenoid valve of the corresponding fire extinguishing bottle through the driving cable according to the fire alarm and location information, and controls the corresponding nozzle to spray the fire extinguishing agent through the pipeline;

[0047] Step S4: After the fire alarm is lifted, the flame detector sends fire extinguishing information and location information through the communication cable, and the fire extinguishing control box closes the corresponding fire extinguishing bottle solenoid valve through the driving cable to stop spraying the fire extinguishing agent.

[0048] Preferably, there are two fire extinguisher bottles, including a fire extinguisher bottle (1) and a fire extinguisher bottle (2).

[0049] There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F.

[0050] There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F.

[0051] The communication cable is a CAN communication bus.

[0052] The fire extinguisher bottle (1) has three solenoid valves, namely solenoid valve A, solenoid valve B and solenoid valve C.

[0053] The fire extinguisher bottle (2) has three solenoid valves, namely a solenoid valve D, a solenoid valve E and a solenoid valve F.

[0054] Preferably, the communication cable includes GA1, AD1, Q1, R1, R2, R3, HVCC and a plug.

[0055] The GA1 is the microcontroller control terminal and outputs a high level.

[0056] The AD1 is a collection port.

[0057] The Q1 is a triode, and its model is 5401.

[0058] R2 is a pull-up resistor, and its resistance is 10kΩ.

[0059] The R3 is a current limiting resistor, and its resistance is 1 kΩ.

[0060] The HVCC is a power input terminal, and its voltage is 3.3V.

[0061] The R1 is a 10 kΩ resistor connected in series with the resistance of the plug of the communication cable.

[0062] Preferably, a resistor of corresponding resistance is welded between the plug pins of the flame detector to which the plug of the communication cable is connected.

[0063] The flame detectors A, B, C, D, E, and F correspond to resistors with resistance values ​​of 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ, respectively.

[0064] The number marks on the plugs correspond to the corresponding positions in the vehicle.

[0065] The corresponding method is that the flame detector A plug and the flame detector D plug are respectively placed on both sides of the power cabin, the flame detector B plug and the flame detector E plug are respectively placed on both sides of the crew cabin, and the flame detector C plug and the flame detector F plug are respectively placed on both sides of the mission cabin.

[0066] The nozzles A and D are respectively placed on both sides of the power cabin, the nozzles B and E are respectively placed on both sides of the crew cabin, and the nozzles C and F are respectively placed on both sides of the mission cabin.

[0067] The communication cable is connected to the fire extinguishing control box and the flame detector.

[0068] The solenoid valve is connected to the spray head through a pipeline.

[0069] Preferably, in step S1, the flame detector determines its own position information by reading the AD1 value after the resistance voltage is divided by the communication cable plug.

[0070] The position information is the number of the connected plug.

[0071] The plug pin (3) of the flame detector is connected to AD1, and the plug pin (4) is connected to GND.

[0072] In the judgment, when the AD value is 682, the position is judged to be the flame detector A plug, when the AD value is 1309, the position is judged to be the flame detector B plug, when the AD value is 2408, the position is judged to be the flame detector C plug, when the AD value is 2457, the position is judged to be the flame detector D plug, when the AD value is 2730, the position is judged to be the flame detector E plug, and when the AD value is 3377, the position is judged to be the flame detector F plug.

[0073] The AD1 value is the voltage across R1 after Q1 is turned on, U r1 =U HVCC R1 / (R1+R X );

[0074] Among them, R X Indicates the resistance value in the cable plug;

[0075] U r1 Indicates the voltage at the flame detector collection end;

[0076] U HVCC Indicates the input voltage.

[0077] In step S3, after the fire extinguishing control box receives the fire alarm and location information transmitted by the communication cable, it drives the electromagnetic valve corresponding to the fire extinguishing bottle to start through the driving cable, and controls the fire extinguishing agent to spray the fire extinguishing agent to the corresponding fire alarm area through the pipeline.

[0078] Compared with the prior art, the present invention has the following beneficial effects:

[0079] 1. The present invention determines the installation position of the flame detector through cable identification, and the fire extinguishing control box realizes automatic fire location by controlling the electromagnetic valve corresponding to the fire extinguishing bottle.

[0080] 2. The present invention changes the previous vehicle fire extinguishing system which adopts a full-coverage high-energy extinguishing method due to the inability to locate, increases the number of fire extinguishing tasks that can be completed by a single supply system, and is safer.

[0081] 3. The present invention accurately locates the fire area and controls the fire extinguishing agent spraying area, providing a more efficient and energy-saving fire extinguishing measure for the special vehicle fire extinguishing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0083] Figure 1 This is a schematic diagram of the fire extinguishing system.

[0084] Figure 2 Schematic diagram of the fire extinguishing system layout.

[0085] Figure 3 This is a schematic diagram of the communication cable.

[0086] Figure 4 This is a schematic diagram of the internal structure of the plug.

[0087] Figure 5 This is a schematic diagram of the cable identification circuit principle. DETAILED DESCRIPTION

[0088] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0089] According to the invention, a vehicle-mounted fire extinguishing system based on cable identification and fire location is proposed. Figure 1 For example, including:

[0090] Fire extinguishing control box, communication cable, drive cable, pipeline, fire extinguisher bottle, flame detector, sprinkler.

[0091] There are two fire extinguisher bottles, including fire extinguisher bottle 1 and fire extinguisher bottle 2.

[0092] There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F.

[0093] There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F.

[0094] The communication cable is a CAN communication bus.

[0095] The communication cable connects the fire extinguishing control box and the flame detector. Figure 3 For example, resistors with different resistance values ​​are installed in the plug connected to the flame detector. The flame detector determines its own position information by reading the AD1 value after the voltage is divided by the cable plug resistance. That is, the flame detector reads different AD1 values ​​according to the different resistance values ​​of the cable plug to determine the installation position.

[0096] The resistors are 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ.

[0097] by Figure 2For example, when the cable is installed in the vehicle, it is installed at the corresponding position in the vehicle according to the plug number mark. The flame detector A plug and the flame detector D plug are placed on both sides of the power compartment, the flame detector B plug and the flame detector E plug are placed on both sides of the passenger compartment, and the flame detector C plug and the flame detector F plug are placed on both sides of the mission compartment.

[0098] Nozzle A and Nozzle D are placed on both sides of the power compartment, Nozzle B and Nozzle E are placed on both sides of the passenger compartment, and Nozzle C and Nozzle F are placed on both sides of the mission compartment. Fire extinguisher bottle 1 has three solenoid valves, namely solenoid valve A, solenoid valve B, and solenoid valve C; fire extinguisher bottle 2 has three solenoid valves, namely solenoid valve D, solenoid valve E, and solenoid valve F. Solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D, solenoid valve E, and solenoid valve F are connected to nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F through pipelines.

[0099] The flame detector is connected to Figure 4 For example, specifically, a 2kΩ resistor is welded between the plug pins 3 and 4 of flame detector A, a 4.7kΩ resistor is welded between the plug pins 3 and 4 of flame detector B, a 10kΩ resistor is welded between the plug pins 3 and 4 of flame detector C, a 15kΩ resistor is welded between the plug pins 3 and 4 of flame detector D, a 20kΩ resistor is welded between the plug pins 3 and 4 of flame detector E, and a 47kΩ resistor is welded between the plug pins 3 and 4 of flame detector F. Among the flame detector plug pins, pin 3 is connected to AD1 and pin 4 is connected to GND.

[0100] When a fire occurs, the flame detector determines the plug to which it is connected based on the different AD1 values ​​it reads, thereby determining the installation location in the vehicle. The flame detector reports the fire alarm and location information via the CAN bus.

[0101] Specifically, after the fire extinguishing system is powered on, the flame detector determines its own position information by reading the AD value divided by the resistance value in the communication cable plug, that is, determines the plug number to which it is connected, thereby determining the installation position.

[0102] The position information of the flame detector itself is judged by reading the voltage at the resistor R1 end and converting it into AD value information. When the AD value is 682, the position is judged to be the flame detector A plug; when the AD value is 1309, the position is judged to be the flame detector B plug; when the AD value is 2408, the position is judged to be the flame detector C plug; when the AD value is 2457, the position is judged to be the flame detector D plug; when the AD value is 2730, the position is judged to be the flame detector E plug; when the AD value is 3377, the position is judged to be the flame detector F plug.

[0103] by Figure 5For example, GA1 is the microcontroller control terminal; AD1 is the acquisition port; Q1 is a transistor, its model is 5401; R2 is a pull-up resistor, its resistance is 10kΩ; R3 is a current limiting resistor, its resistance is 1kΩ; HVCC is the power input terminal, its voltage is 3.3v; R1 is a 10kΩ resistor, after being connected in series with the resistance of the communication cable plug to divide the voltage, the voltage across R1 is the AD value read by the flame detector.

[0104] After the system is powered on, the MCU controls the GA1 port to output a high level, and the transistor Q1 is turned on. At this time, the MCU reads that the value of AD1 has changed, and obtains the voltage value after voltage division with the resistance in the communication cable plug. According to the voltage division formula U r1 =U HVCC R1 / (R1+R X );

[0105] Among them, R X Indicates the resistance value in the cable plug;

[0106] U r1 Indicates the voltage at the flame detector collection end;

[0107] U HVCC Indicates the input voltage.

[0108] In traditional technology, the position information of flame detectors is fixed, so the installation position of each detector needs to be fixed. When it is disassembled for maintenance, it needs to be installed in the original position. When replacing a new detector, the corresponding installation position information needs to be written into the detector firmware. However, the installation position is automatically determined by the cable. After changing the detector position or replacing a new detector, there is no need to perform any adaptation work. It can be used directly and can be replaced at any time.

[0109] After receiving the fire extinguishing control box, the solenoid valve corresponding to the fire extinguishing bottle is driven by the driving cable, and the fire extinguishing agent is accurately controlled to be sprayed to the corresponding fire alarm area through the pipeline.

[0110] Specifically, after the fire extinguishing control box reads the fire alarm and location information on the bus, it drives the corresponding fire extinguishing bottle solenoid valve to start. When flame detectors A, B, C, D, E, and F report a fire alarm, the solenoid valves A, B, C, D, E, and F are started respectively, and the nozzles A, B, C, D, E, and F are controlled to spray the fire extinguishing agent respectively.

[0111] After the fire is extinguished, that is, the fire alarm is lifted, the flame detector sends the fire extinguishing information and location information through the CAN bus. After the fire extinguishing control box reads the fire alarm and location information on the bus, it closes the corresponding fire extinguisher bottle solenoid valve through the drive cable and stops spraying the fire extinguishing agent. The remaining fire extinguishing agent can be used next time.

[0112] If the installation location information is written into each detector, the detectors cannot be universal and need to be used in a fixed position. Since the cable position is fixed, each connector will be installed at the corresponding position. The fire extinguishing system provided by the present invention can accurately locate the fire area. According to the arranged pipelines, the detector automatically determines the installation position by reading the resistance value in the cable. In this way, any detector can be installed at any position, which overcomes the shortcoming that the detectors in the existing precise positioning fire extinguishing system are not interchangeable. When extinguishing a fire, open the corresponding solenoid valve of the fire extinguisher bottle to spray the fire extinguishing agent. When the fire alarm in the area is lifted, close the solenoid valve of the fire extinguisher bottle, and the remaining fire extinguishing agent can be used next time, providing a more efficient and energy-saving fire extinguishing measure for the special vehicle fire extinguishing system.

[0113] According to a vehicle-mounted fire extinguishing method based on cable identification and fire location provided by the present invention, a fire is extinguished by using the vehicle-mounted fire extinguishing system based on cable identification and fire location, and the method comprises:

[0114] The communication cable connects the flame detector and the fire extinguishing control box. There are two fire extinguishing bottles, including fire extinguishing bottle 1 and fire extinguishing bottle 2.

[0115] There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F.

[0116] There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F.

[0117] The communication cable is a CAN communication bus.

[0118] The fire extinguisher bottle 1 has three solenoid valves, namely solenoid valve A, solenoid valve B, and solenoid valve C.

[0119] The fire extinguisher bottle 2 has three solenoid valves, namely solenoid valve D, solenoid valve E, and solenoid valve F.

[0120] In more preferred examples, the communication cable includes GA1, AD1, Q1, R1, R2, R3, HVCC and a plug.

[0121] The GA1 is the microcontroller control terminal and outputs a high level.

[0122] The AD1 is a collection port.

[0123] The Q1 is a triode, and its model is 5401.

[0124] R2 is a pull-up resistor, and its resistance is 10kΩ.

[0125] The R3 is a current limiting resistor, and its resistance is 1 kΩ.

[0126] The HVCC is a power input terminal, and its voltage is 3.3V.

[0127] The R1 is a 10 kΩ resistor connected in series with the resistance of the plug of the communication cable.

[0128] The fire extinguisher bottle is connected to the nozzle through a pipeline, and a resistor with a corresponding resistance value is welded between the plug pins of the flame detector connected to the plug of the communication cable.

[0129] The flame detectors A, B, C, D, E, and F correspond to resistors with resistance values ​​of 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ, respectively.

[0130] The number marks on the plugs correspond to the corresponding positions in the vehicle.

[0131] The corresponding method is that the flame detector A plug and the flame detector D plug are respectively placed on both sides of the power cabin, the flame detector B plug and the flame detector E plug are respectively placed on both sides of the crew cabin, and the flame detector C plug and the flame detector F plug are respectively placed on both sides of the mission cabin.

[0132] The nozzles A and D are respectively placed on both sides of the power cabin, the nozzles B and E are respectively placed on both sides of the crew cabin, and the nozzles C and F are respectively placed on both sides of the mission cabin.

[0133] The communication cable is connected to the fire extinguishing control box and the flame detector.

[0134] The solenoid valve is connected to the spray head through a pipeline.

[0135] Step S1: After the fire extinguishing system is powered on, the flame detector determines its own position information.

[0136] Specifically, the flame detector reads the AD value after voltage division by the resistance value in the communication cable plug, determines the plug number to which it is connected, and thereby determines the installation position.

[0137] In the judgment, when the AD value is 682, the position is judged to be the flame detector A plug, when the AD value is 1309, the position is judged to be the flame detector B plug, when the AD value is 2408, the position is judged to be the flame detector C plug, when the AD value is 2457, the position is judged to be the flame detector D plug, when the AD value is 2730, the position is judged to be the flame detector E plug, and when the AD value is 3377, the position is judged to be the flame detector F plug.

[0138] After the system is powered on, the flame detector determines the plug it is connected to based on the different AD values ​​it reads, thereby determining the installation position in the vehicle. The single-chip microcomputer controls the GA1 port to output a high level, and the transistor Q1 is turned on. At this time, the single-chip microcomputer reads that the value of AD1 has changed, and obtains the voltage value after voltage division with the resistance in the communication cable plug. According to the voltage division formula U r1 =U HVCC R1 / (R1+R X );

[0139] Among them, R X Indicates the resistance value in the cable plug;

[0140] U r1 Indicates the voltage at the flame detector collection end;

[0141] U HVCC Indicates the input voltage.

[0142] Step S2: When a fire occurs, the flame detector sends fire alarm and location information via the communication cable.

[0143] Step S3: After the fire extinguishing control box reads the fire alarm and location information on the bus, it drives the corresponding fire extinguishing bottle solenoid valve to start.

[0144] Specifically, when flame detector A reports a fire alarm, solenoid valve A is activated and nozzle A sprays fire extinguishing agent; when flame detector B reports a fire alarm, solenoid valve B is activated and nozzle B sprays fire extinguishing agent; when flame detector C reports a fire alarm, solenoid valve C is activated and nozzle C sprays fire extinguishing agent; when flame detector D reports a fire alarm, solenoid valve D is activated and nozzle D sprays fire extinguishing agent; when flame detector E reports a fire alarm, solenoid valve E is activated and nozzle E sprays fire extinguishing agent; when flame detector F reports a fire alarm, solenoid valve F is activated and nozzle F sprays fire extinguishing agent.

[0145] Step S4: When a fire is extinguished, the flame detector sends fire extinguishing and location information through the communication cable. After the fire extinguishing control box reads the fire alarm and location information on the bus, it closes the corresponding fire extinguishing bottle solenoid valve and ends the bottle spraying.

[0146] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0147] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A vehicle-mounted fire extinguishing system based on cable identification and fire location, characterized in that: include: Fire extinguishing control box, communication cable, drive cable, pipeline, fire extinguisher bottle, flame detector and sprinkler; When a fire occurs, the flame detector determines its own position information, obtains the fire alarm and position information, and transmits it through the communication cable; The fire extinguishing control box drives the corresponding solenoid valve of the corresponding fire extinguishing bottle through the driving cable according to the fire alarm and location information; The corresponding solenoid valve controls the corresponding nozzle to spray the fire extinguishing agent through the pipeline; After the fire alarm is lifted, the flame detector sends fire extinguishing information and location information via the communication cable; According to the fire extinguishing information and location information, the fire extinguishing control box closes the corresponding fire extinguisher bottle solenoid valve through the drive cable and stops spraying the fire extinguishing agent.

2. The vehicle-mounted fire extinguishing system based on cable fire identification and positioning according to claim 1 is characterized in that: There are two fire extinguisher bottles, including a fire extinguisher bottle (1) and a fire extinguisher bottle (2); There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F; There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F; The communication cable is a CAN communication bus; The fire extinguisher bottle (1) has three solenoid valves, namely solenoid valve A, solenoid valve B, and solenoid valve C; The fire extinguisher bottle (2) has three solenoid valves, namely a solenoid valve D, a solenoid valve E and a solenoid valve F.

3. The vehicle-mounted fire extinguishing system based on cable fire identification and location according to claim 1 is characterized in that: The communication cable includes GA1, AD1, Q1, R1, R2, R3, HVCC and a plug; GA1 is the microcontroller control terminal, outputting a high level; The AD1 is a collection port; Q1 is a triode, and its model is 5401; R2 is a pull-up resistor, and its resistance is 10kΩ; R3 is a current limiting resistor, and its resistance is 1kΩ; The HVCC is a power input terminal, and its voltage is 3.3v; The R1 is a 10 kΩ resistor connected in series with the resistance of the plug of the communication cable.

4. The vehicle-mounted fire extinguishing system based on cable fire identification and positioning according to claim 2 is characterized in that: A resistor of corresponding resistance is welded between the plug pins of the flame detector to which the plug of the communication cable is connected; The flame detectors A, B, C, D, E, and F correspond to resistors with resistance values ​​of 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ, respectively; The number marks of the plugs correspond to the corresponding positions in the vehicle; The corresponding manner is that the flame detector A plug and the flame detector D plug are respectively placed on both sides of the power cabin, the flame detector B plug and the flame detector E plug are respectively placed on both sides of the passenger cabin, and the flame detector C plug and the flame detector F plug are respectively placed on both sides of the mission cabin; The nozzles A and D are placed on both sides of the power cabin, the nozzles B and E are placed on both sides of the passenger cabin, and the nozzles C and F are placed on both sides of the mission cabin. The communication cable is connected to the fire extinguishing control box and the flame detector; The solenoid valve is connected to the spray head through a pipeline.

5. The vehicle-mounted fire extinguishing system based on cable fire identification and location according to claim 3 is characterized in that: The flame detector determines its own position information by reading the AD1 value after the resistor voltage is divided in the communication cable plug, and reports the fire alarm and position information through the communication cable; After receiving the fire alarm and location information transmitted by the communication cable, the fire extinguishing control box drives the solenoid valve corresponding to the fire extinguishing bottle through the driving cable to start, and controls the fire extinguishing agent to spray the fire extinguishing agent to the corresponding fire alarm area through the pipeline; The plug pin (3) of the flame detector is connected to AD1, and the plug pin (4) is connected to GND; The position information is the number of the connected plug; In the judgment, when the AD value is 682, the position is judged to be the flame detector A plug, when the AD value is 1309, the position is judged to be the flame detector B plug, when the AD value is 2408, the position is judged to be the flame detector C plug, when the AD value is 2457, the position is judged to be the flame detector D plug, when the AD value is 2730, the position is judged to be the flame detector E plug, and when the AD value is 3377, the position is judged to be the flame detector F plug; The AD1 value is the voltage across R1 after Q1 is turned on, U r1 =U HVCC R1 / (R1+R X ); Among them, R X Indicates the resistance value in the cable plug; U r1 Indicates the voltage at the flame detector collection end; U HVCC Indicates the input voltage.

6. A vehicle-mounted fire extinguishing method based on cable identification and fire location, characterized in that: The vehicle-mounted fire extinguishing system based on cable fire identification and positioning as claimed in claim 1 is used to extinguish a fire, and the method comprises: Step S1: When a fire occurs, the flame detector determines its own position information; Step S2: The flame detector obtains fire alarm and location information and transmits it through a communication cable; Step S3: The fire extinguishing control box drives the corresponding solenoid valve of the corresponding fire extinguishing bottle through the driving cable according to the fire alarm and location information, and controls the corresponding nozzle to spray the fire extinguishing agent through the pipeline; Step S4: After the fire alarm is lifted, the flame detector sends fire extinguishing information and location information through the communication cable, and the fire extinguishing control box closes the corresponding fire extinguishing bottle solenoid valve through the driving cable to stop spraying the fire extinguishing agent.

7. The vehicle-mounted fire extinguishing method based on cable fire identification and positioning according to claim 6 is characterized in that: There are two fire extinguisher bottles, including a fire extinguisher bottle (1) and a fire extinguisher bottle (2); There are 6 flame detectors in total, including flame detector A, flame detector B, flame detector C, flame detector D, flame detector E, and flame detector F; There are 6 nozzles in total, including nozzle A, nozzle B, nozzle C, nozzle D, nozzle E, and nozzle F; The communication cable is a CAN communication bus; The fire extinguisher bottle (1) has three solenoid valves, namely solenoid valve A, solenoid valve B, and solenoid valve C; The fire extinguisher bottle (2) has three solenoid valves, namely a solenoid valve D, a solenoid valve E and a solenoid valve F.

8. The vehicle-mounted fire extinguishing method based on cable fire identification and location according to claim 6 is characterized in that: The communication cable includes GA1, AD1, Q1, R1, R2, R3, HVCC and a plug; GA1 is the microcontroller control terminal, outputting a high level; The AD1 is a collection port; Q1 is a triode, and its model is 5401; R2 is a pull-up resistor, and its resistance is 10kΩ; R3 is a current limiting resistor, and its resistance is 1kΩ; The HVCC is a power input terminal, and its voltage is 3.3v; The R1 is a 10 kΩ resistor connected in series with the resistance of the plug of the communication cable.

9. The vehicle-mounted fire extinguishing method based on cable fire identification and positioning according to claim 7 is characterized in that: A resistor of corresponding resistance is welded between the plug pins of the flame detector to which the plug of the communication cable is connected; The flame detectors A, B, C, D, E, and F correspond to resistors with resistance values ​​of 2kΩ, 4.7kΩ, 10kΩ, 15kΩ, 20kΩ, and 47kΩ, respectively; The number marks of the plugs correspond to the corresponding positions in the vehicle; The corresponding manner is that the flame detector A plug and the flame detector D plug are respectively placed on both sides of the power cabin, the flame detector B plug and the flame detector E plug are respectively placed on both sides of the passenger cabin, and the flame detector C plug and the flame detector F plug are respectively placed on both sides of the mission cabin; The nozzles A and D are placed on both sides of the power cabin, the nozzles B and E are placed on both sides of the passenger cabin, and the nozzles C and F are placed on both sides of the mission cabin. The communication cable is connected to the fire extinguishing control box and the flame detector; The solenoid valve is connected to the spray head through a pipeline.

10. The vehicle-mounted fire extinguishing method based on cable fire identification and positioning according to claim 8, characterized in that: In step S1, the flame detector determines its own position information by reading the AD1 value after the resistor voltage is divided in the communication cable plug; The position information is the number of the connected plug; The plug pin (3) of the flame detector is connected to AD1, and the plug pin (4) is connected to GND; In the judgment, when the AD value is 682, the position is judged to be the flame detector A plug, when the AD value is 1309, the position is judged to be the flame detector B plug, when the AD value is 2408, the position is judged to be the flame detector C plug, when the AD value is 2457, the position is judged to be the flame detector D plug, when the AD value is 2730, the position is judged to be the flame detector E plug, and when the AD value is 3377, the position is judged to be the flame detector F plug; The AD1 value is the voltage across R1 after Q1 is turned on, U r1 =U HVCC R1 / (R1+R X ); Among them, R X Indicates the resistance value in the cable plug; U r1 Indicates the voltage at the flame detector collection end; U HVCC Indicates the input voltage; In step S3, after the fire extinguishing control box receives the fire alarm and location information transmitted by the communication cable, it drives the electromagnetic valve corresponding to the fire extinguishing bottle to start through the driving cable, and controls the fire extinguishing agent to spray the fire extinguishing agent to the corresponding fire alarm area through the pipeline.

Images