CN-121982822-A - Fire prevention and control linkage system for urban rail transit vehicle

CN121982822ACN 121982822 ACN121982822 ACN 121982822ACN-121982822-A

Abstract

The invention discloses a fire prevention and control linkage system for urban rail transit vehicles, which comprises a smoke and fire alarm linkage subsystem and a fire suppression subsystem, wherein fire characteristic data are collected according to characteristics of different areas such as passenger areas and equipment areas in a train, an intelligent fire identification model of a monitoring video is combined, fire hidden danger is comprehensively researched and judged, linkage, alarm and control instructions are further generated, a broadcasting system is triggered by linkage signals to conduct regional broadcasting, alarm signals are uploaded to a TCMS and a control center, the control instructions are issued to the fire suppression subsystem, and the fire suppression subsystem receives instructions from the linkage subsystem and the TCMS and performs fire extinguishing or suppression operation on a target area. The invention realizes the differential and intelligent identification of fire characteristics of different areas and constructs a complete and active fire prevention and control system.

Inventors

LU MENGYU
WANG XIAOMING
REN YUQI
LIN KUANYU
LI ZHENG

Assignees

中车大连机车研究所有限公司

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. A fire prevention and control linkage system for urban rail transit vehicles, a broadcasting system, a control center and a TCMS system of a linkage train, is characterized by comprising a smoke and fire alarm linkage subsystem and a fire suppression subsystem; The fire alarm linkage subsystem is used for collecting fire feature sampling data of different areas in a train according to characteristics of the different areas, carrying out fire identification on monitoring videos in the train through a fire identification model, detecting fire hazards of the different areas in the train and generating linkage signals, alarm signals and control instructions, wherein the linkage signals are linked with a broadcasting system to carry out regional broadcasting, the alarm signals are sent to a TCMS system and a control center, and the control instructions are sent to the fire suppression subsystem to jointly control the fire suppression subsystem through the TCMS system and the control instructions; the fire suppression subsystem is used for receiving the control instructions of the smoke and fire alarm linkage subsystem and the TCMS and executing fire extinguishing or suppressing operation on the corresponding area.
2. The fire prevention and control linkage system for urban rail transit vehicles according to claim 1, wherein the pyrotechnic alarm linkage subsystem comprises a plurality of detectors, a plurality of fire alarm sub-controllers and a fire alarm controller; The detectors are arranged in different areas of the train and are used for collecting different types of fire characteristic sampling data of different areas, preprocessing the fire characteristic sampling data, communicating with fire alarm sub-controllers of corresponding areas and sending the preprocessed fire characteristic sampling data to the fire alarm sub-controllers; The fire alarm sub-controllers are in one-to-one correspondence with the detectors, and are used for receiving the preprocessed fire feature sampling data sent by the detectors, judging whether fire occurs according to preset fire processing logic of different areas of the train, sending fire alarm signals to the fire alarm controllers when the fire occurs, receiving alarm signals returned by the fire alarm controllers, and generating control instructions to control the fire suppression subsystem to perform fire extinguishing or suppressing operation, wherein the preset fire processing logic of different areas of the train comprises passenger area fire detection logic and electrical cabinet fire detection logic; The fire alarm controller is used for receiving fire alarm signals sent by the fire alarm sub-controllers, carrying out fire identification on the monitoring video in the train through the fire identification model so as to carry out fire secondary judgment, sending alarm signals to the fire alarm sub-controllers, the control center and the TCMS system when the fire is identified, and sending linkage signals to the broadcasting system so as to carry out regional broadcasting and display the positions of the alarm signals.
3. The fire prevention and control linkage system for urban rail transit vehicles according to claim 2, wherein each of the plurality of detectors comprises a detection module, a processing module and a communication module; The detection module is used for acquiring fire characteristic sampling data of different areas through a preset sensor according to fire characteristics of different areas, and inputting the fire characteristic sampling data into the processing module for preprocessing; the processing module is used for preprocessing the data and inputting the preprocessed fire feature sampling data to the communication module; the communication module is used for communicating with the fire alarm sub-controllers in the corresponding areas through two buses so as to send the preprocessed fire feature sampling data to the fire alarm sub-controllers.
4. The fire prevention and control linkage system for urban rail transit vehicles according to claim 2, wherein the plurality of fire alarm sub-controllers each comprise a logic judgment module, a linkage interface module and a sub-control communication module; The logic judging module is used for receiving the preprocessed fire feature sampling data sent by the detector, analyzing and judging the fire feature sampling data according to preset fire processing logic corresponding to different protection areas to generate a primary judging result of whether fire occurs or not, wherein the preset fire processing logic comprises a passenger area fire detection logic and an electrical cabinet fire detection logic; The linkage interface module is used for generating and issuing a fire extinguishing or suppressing control instruction aiming at the fire suppression subsystem in the current area when the primary judgment result of the logic judgment module is that a fire occurs and an alarm signal from the fire alarm controller is received; The sub-control communication module is used for realizing two-bus communication with the detector to receive fire characteristic sampling data, and is in two-way communication with the fire alarm controller through a redundant bus network to send a fire alarm signal when the primary judgment result is that a fire occurs, and receive an alarm signal sent by the fire alarm controller.
5. The fire prevention and control linkage system for urban rail transit vehicles according to claim 2, wherein the fire alarm controller comprises a central processing module, a video analysis module, a system linkage module, a central communication module and a display module; The central processing module is used for receiving fire alarm signals from each fire alarm sub-controller and coordinating and controlling other modules of the fire alarm controllers; The video analysis module is used for retrieving the monitoring video stream of the corresponding area in the train, and analyzing the video stream in real time through the pre-trained fire disaster identification model so as to obtain a fire disaster secondary judgment result based on the video characteristics; The system linkage module is used for comprehensively deciding based on the fire alarm signal and the fire secondary judgment result, generating an alarm signal sent to a control center, a TCMS system and a fire alarm sub-controller and a linkage signal sent to a broadcasting system when confirming the fire, and displaying the fire alarm condition through the display module; The central communication module is used for carrying out two-way communication with all fire alarm sub-controllers through a redundant bus network and is connected with the TCMS system, the broadcasting system and the data remote communication module through an Ethernet or MVB so as to execute instructions generated by the system linkage module; the display module is used for displaying fire alarm information when a fire disaster occurs, and the fire alarm information comprises fire alarm information, carriage numbers, and installation position and time information of the fire alarm sub-controllers.
6. The fire prevention and control linkage system for urban rail transit vehicles according to claim 1, wherein the fire suppression subsystem comprises a gas-producing driving type perfluorinated hexanone gas fire extinguishing device arranged in each electrical cabinet and a water mist fire suppression device arranged in a passenger area.
7. The fire prevention and control linkage system for urban rail transit vehicles of claim 2, wherein the passenger zone fire detection logic is: when the fire feature sampling data of the passenger area exceeds a first set threshold value, the fire alarm sub-controller sends a fire alarm signal to the fire alarm controller, starts countdown and waits for an alarm signal returned by the fire alarm controller and a passenger voice alarm signal from the area; if an alarm signal and a passenger voice alarm signal from the area are received in the countdown period, judging that the fire is real, transmitting the alarm signal to a control center through a fire alarm controller, opening partition control valves of the corresponding areas in a linkage manner, transmitting the fire alarm signal to a TCMS system, and controlling a water mist fire suppression device of the area to execute fire extinguishing operation through the TCMS system; if the alarm signal is not received, the alarm signal is judged to be an interference signal, and the alarm state is reset.
8. The fire prevention and control linkage system for urban rail transit vehicles of claim 2, wherein the electrical cabinet fire detection logic is staged detection logic comprising: the first stage, when the fire feature sampling data of the electrical cabinet exceeds a second set threshold value and the value of the collected fire feature sampling data is in a continuously increasing trend, the duration reaches the first time, or the smoke alarm is continuously detected to reach the second time, the second stage is entered for judgment; The second stage, when the fire disaster characteristic sampling data of the electrical cabinet is higher than a third set threshold value and the value of the collected fire disaster characteristic sampling data is in a continuously increasing trend, the duration time reaches a third time, or the duration smoke alarm reaches a fourth time, the third stage is entered; The third stage, when the fire information is confirmed to be correct, judging the fire to be true, sending a starting signal to the gas-producing driving type perfluorinated hexanone gas fire extinguishing device through the fire alarm sub-controller, and executing fire extinguishing operation; If the fire feature sampling data in any stage does not exceed the corresponding threshold value or the continuously increased time does not accord with the preset time, the fire feature sampling data is judged to be an interference signal and recorded, and the alarm state is reset.
9. The fire prevention and control linkage system for urban rail transit vehicles according to claim 2, wherein the fire alarm controller further comprises a dynamic emergency policy module: the dynamic emergency strategy module is used for generating a linkage strategy based on the real-time position and the fire condition of the vehicle, and the linkage strategy is as follows: when a fire in the middle of a carriage is detected and the vehicle is running in a tunnel, the following actions are executed through the dynamic emergency strategy module: Cutting off a ventilation system of a fire source adjacent to the carriage to form a negative pressure area so as to prevent smoke from diffusing; guiding passengers to evacuate towards the direction of the locomotive through a train broadcasting system; and requesting the nearest station stop from the control center through the data remote communication module, and starting the emergency ventilation mode of the station in parallel.
10. The fire prevention and control linkage system for urban rail transit vehicles according to claim 2, wherein said pyrotechnic warning linkage subsystem is of triple redundancy design comprising: The communication redundancy is that a two-way CAN bus redundancy communication is adopted between the fire alarm controller and the fire alarm sub-controller; the fire alarm controller adopts a primary and backup double lining board redundant configuration, and is automatically switched to a backup lining board when the primary lining board fails; and the power redundancy is that each module in the fire alarm controller is powered by an independent isolated driving power supply.

Description

Fire prevention and control linkage system for urban rail transit vehicle Technical Field The invention relates to the technical field of fire protection of urban rail transit vehicles, in particular to a fire prevention and control linkage system for urban rail transit vehicles. Background By the end of 2023, the total of 59 cities in China open 338 urban rail transit operation lines, wherein the subway operation lines account for 76.11 percent, and the other standard lines account for 23.89 percent. Urban rail transit is taken as an important component in the urban public safety field of China, and the transportation safety, particularly the fire safety, of the urban rail transit is greatly emphasized due to the specificity of the running environment. The fire prevention and control means of key areas such as an electric cabinet and a passenger area of the existing urban rail vehicle are single, facilities are relatively old, fire characteristics of the passenger area and equipment area are different, the existing design ignores fire characteristics of different areas, therefore, a detection algorithm adopted in the design is relatively uniform, the whole urban rail vehicle is lack of complete and active fire prevention and control system design, particularly an underground running line, when fire occurs in the key areas, the fire prevention and control means are harmful to personnel, and immeasurable influence is caused on electric equipment and running lines of the vehicle. Disclosure of Invention The invention provides a fire prevention and control linkage system for urban rail transit vehicles, which aims to overcome the technical problems. In order to achieve the above object, the technical scheme of the present invention is as follows: a fire prevention and control linkage system for urban rail transit vehicles comprises a broadcasting system, a control center and a TCMS system of a linkage train, wherein the fire prevention and control linkage system comprises a smoke and fire alarm linkage subsystem and a fire suppression subsystem; The fire alarm linkage subsystem is used for collecting fire feature sampling data of different areas in a train, carrying out fire identification on monitoring videos in the train through a fire identification model, detecting fire hidden dangers of the different areas in the train and generating linkage signals, alarm signals and control instructions, carrying out linkage with the broadcasting system through the linkage signals to carry out regional broadcasting, sending the alarm signals to the TCMS system and the control center, and sending the control instructions to the fire suppression subsystem to jointly control the fire suppression subsystem through the TCMS system and the control instructions; the fire suppression subsystem is used for receiving the control instructions of the smoke and fire alarm linkage subsystem and the TCMS and executing fire extinguishing or suppressing operation on the corresponding area. Further, the smoke and fire alarm linkage subsystem comprises a plurality of detectors, a plurality of fire alarm sub-controllers and a fire alarm controller; The detectors are arranged in different areas of the train and are used for collecting different types of fire characteristic sampling data of different areas, preprocessing the fire characteristic sampling data, communicating with fire alarm sub-controllers of corresponding areas and sending the preprocessed fire characteristic sampling data to the fire alarm sub-controllers; The fire alarm sub-controllers are in one-to-one correspondence with the detectors, and are used for receiving the preprocessed fire feature sampling data sent by the detectors, judging whether fire occurs according to preset fire processing logic of different areas of the train, sending fire alarm signals to the fire alarm controllers when the fire occurs, receiving alarm signals returned by the fire alarm controllers, and generating control instructions to control the fire suppression subsystem to perform fire extinguishing or suppressing operation, wherein the preset fire processing logic of different areas of the train comprises passenger area fire detection logic and electrical cabinet fire detection logic; The fire alarm controller is used for receiving fire alarm signals sent by the fire alarm sub-controllers, carrying out fire identification on the monitoring video in the train through the fire identification model so as to carry out fire secondary judgment, sending alarm signals to the fire alarm sub-controllers, the control center and the TCMS system when the fire is identified, and sending linkage signals to the broadcasting system so as to carry out regional broadcasting and display the positions of the alarm signals. Further, the plurality of detectors each comprise a detection module, a processing module and a communication module; The detection module is used for acquiring fire characteristic sampling data o