Fire detection alarm device suitable for rail engineering vehicle

Abstract

The utility model relates to a fire detection alarm device suitable for a track engineering vehicle in the field of fire-fighting emergency. The fire detection alarm device comprises a main controller, a monitoring acousto-optic alarm, a twisted-pair shielding cable, a composite sensor, a terminal resistor, a shielding network cable, a multi-core cable and an auxiliary controller, the monitoring acousto-optic alarm is connected with the main controller through a cable; the main controller is connected with a plurality of composite sensors through a twisted-pair shielding cable; the open end of the twisted-pair shielding cable is connected with the main controller, and the tail end of the twisted-pair shielding cable is connected with the terminal resistor; the main controller is connected with the auxiliary controller through a shielding network cable and a multi-core cable. According to the utility model, through multiple groups of composite sensors, multi-dimensional fusion analysis of smoke, temperature and flame signals is realized, and the false alarm and missing alarm rate is reduced in combination with adjustable alarm threshold setting; the design of the main controller and the auxiliary controller of the double cabs is matched, real-time sound-light alarm of the whole vehicle state is achieved, emergency response time is shortened, a temperature control module and a waterproof assembly are integrated in a customized controller case, and false triggering or function failure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fire emergency response, and in particular to a fire detection and alarm device suitable for rail engineering vehicles. Background Technology

[0002] In recent years, with the continuous expansion of China's railway construction scale, the number and complexity of track engineering vehicles, as the core equipment for track maintenance operations, have significantly increased. These vehicles typically employ a dual-cab design at both ends, with enclosed functional areas such as fuel tanks, generator compartments, and engine compartments in the middle, powered by fuel engines. Due to the long-term presence of high temperatures, fuel evaporation, and electrical equipment malfunctions within the compartments, the risk of fire is particularly prominent. However, existing fire detection and alarm systems have the following technical shortcomings in practical applications:

[0003] 1. Insufficient reliability of single sensor detection: It relies heavily on a single parameter such as smoke or temperature to judge fires, lacks the ability to fuse and analyze multi-dimensional data. The environment inside the closed chamber is complex, and a single sensor is easily affected by equipment operation interference, which leads to an increase in false alarm or missed alarm rate and makes it difficult to identify the initial fire in a timely and accurate manner.

[0004] 2. Inefficient distributed monitoring architecture: It often adopts an independent area control design, with each fire protection unit being a self-contained system. It lacks centralized data processing capabilities, and the fire signal transmission delay is high, resulting in a delayed emergency response.

[0005] 3. Insufficient alarm coverage and interactivity: Conventional alarm devices are usually only installed in a single driver's cab, with limited audible and visual warning range and a lack of intuitive human-machine interface. This makes it difficult for staff to obtain key information such as the location of the fire and changes in parameters in a timely manner, delaying the opportunity for manual confirmation and handling.

[0006] 4. Poor system scalability and scenario adaptability: The existing system hardware interface is closed, it is difficult to expand the capacity of sensors and actuators, it is difficult to adapt to the changes in cabin layout of different vehicle models, and the control logic of the fire extinguishing device is fixed, which cannot flexibly match the differentiated handling needs of various types of fire scenarios. Utility Model Content

[0007] The purpose of this invention is to address the problems of the prior art by proposing a fire detection and alarm device and system suitable for rail engineering vehicles.

[0008] A fire detection and alarm device suitable for rail engineering vehicles includes a main controller, a monitoring audible and visual alarm, a twisted pair shielded cable, a composite sensor, a terminating resistor, a shielded network cable, a multi-core cable, and a secondary controller.

[0009] The monitoring audible and visual alarm is connected to the main controller via a cable;

[0010] The main controller is connected to several composite sensors via twisted-pair shielded cables;

[0011] The beginning of the twisted-pair shielded cable is connected to the main controller, and the end of the twisted-pair shielded cable is connected to the terminating resistor.

[0012] The main controller is connected to the secondary controller via shielded network cable and multi-core cable respectively;

[0013] The main controller includes a controller chassis, a main control unit, a waterproof protective cover, a door lock, a fault audible and visual alarm, a power button, and a fire extinguishing start button;

[0014] The rated operating voltage of both the main controller and the auxiliary controller is DC24V.

[0015] The configuration of the secondary controller is identical to that of the primary controller, except that it does not include the AIO module and the backup power supply.

[0016] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the main control unit is installed in the middle of the outer cover of the controller housing;

[0017] The main control unit is equipped with a waterproof protective cover.

[0018] The power button and several fire extinguishing activation buttons are arranged side by side on the outer cover of the controller chassis;

[0019] The outer cover switch of the door lock control controller chassis;

[0020] The fault audible and visual alarm is installed on the outer cover of the controller chassis;

[0021] The outer cover is normally kept locked by a door lock.

[0022] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the main control unit is integrated with an industrial-grade tablet computer and a touch screen, and the touch screen is provided with a waterproof protective cover;

[0023] Among them, the industrial-grade tablet PC adopts a bus structure to detect and control electromechanical equipment and process equipment.

[0024] Furthermore, in a fire detection and alarm device suitable for rail engineering vehicles, the power button and several fire extinguishing activation buttons are all equipped with protective covers.

[0025] The power button controls the on / off state of the main controller;

[0026] The fire extinguishing activation button controls the main controller to send a fire extinguishing electrical signal.

[0027] The protective cover serves to prevent dust and water damage, and also prevents accidental contact.

[0028] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the fault audible and visual alarm is installed below the door lock;

[0029] The fault audible and visual alarm will sound an alarm when the main controller experiences a power or communication failure.

[0030] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the controller chassis is equipped with a power supply module, a temperature control module and an AIO module;

[0031] A backup power supply is located at the bottom of the controller chassis;

[0032] The backup power supply consists of two 12V / 3.3Ah maintenance-free batteries.

[0033] The power module, temperature control module, AIO module, and backup power supply are respectively connected to the terminal block (17) via cables for signal transmission.

[0034] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the temperature control module is installed on the side inside the controller housing;

[0035] The temperature control module has a built-in temperature control probe and heater. When the ambient temperature inside the controller chassis is below 1°C, the heater starts heating, and when the ambient temperature inside the controller chassis is above 5°C, the heater stops heating.

[0036] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the composite sensor has built-in smoke, temperature and flame detectors;

[0037] The alarm signal from the composite sensor is transmitted to the main controller via an RS485 bus.

[0038] Furthermore, a fire detection and alarm device suitable for rail engineering vehicles, wherein the composite sensor comprises no more than 32 sets;

[0039] The controller is connected to multiple composite sensors via an RS485 bus to form a distributed fire alarm controller, which monitors the working status of the fire protection area in real time.

[0040] The beneficial effects of this utility model are:

[0041] 1. By integrating multiple composite sensors through RS485 bus, it supports up to 32 sensors working together, breaking through the traditional single detection mode and realizing multi-dimensional fusion analysis of smoke, temperature and flame signals. Combined with adjustable alarm threshold settings, it significantly improves the accuracy of early fire identification in enclosed cabins and reduces the false alarm and missed alarm rates.

[0042] 2. A distributed control architecture is adopted, with the main controller centrally processing data and linking 8 sets of fire extinguishing devices. Combined with the dual driver's cab main and auxiliary controller design, it realizes real-time sound and light alarms throughout the vehicle, shortens emergency response time, and ensures full coverage of fire information.

[0043] 3. The customized controller chassis integrates a temperature control module and waterproof components to ensure stable operation of the equipment under complex conditions such as rain, snow, and extreme cold, and to avoid false triggering or functional failure.

[0044] 4. The system has a built-in backup power supply and redundant control logic, which supports emergency activation of the fire extinguishing device after the vehicle loses power. Attached Figure Description

[0045] Figure 1 This is a structural diagram of a fire detection and alarm device suitable for rail engineering vehicles.

[0046] Figure 2 The external structure diagram of the main controller.

[0047] Figure 3 This is a diagram of the internal structure of the main controller.

[0048] Figure 4 Electrical schematic diagram for fire detection and alarm.

[0049] In the diagram: 1-Main controller, 2-Monitoring audible and visual alarm, 3-Twisted pair shielded cable, 4-Composite sensor, 5-Terminal resistor, 6-Shielded network cable, 7-Multi-core cable, 8-Secondary controller, 9-Controller chassis, 10-Main control unit, 11-Waterproof protective cover, 12-Door lock, 13-Fault audible and visual alarm, 14-Power button, 15-Fire extinguishing start button, 16-Power module, 17-Terminal block, 18-Temperature control module, 19-AIO module, 20-Backup power supply, 21-Protective cover. Detailed Implementation

[0050] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0051] Specific Embodiment 1: Composition of a fire detection and alarm device applicable to rail engineering vehicles

[0052] As attached Figure 1 As shown, a fire detection and alarm device suitable for rail engineering vehicles includes a main controller 1, a monitoring audible and visual alarm 2, a twisted pair shielded cable 3, a composite sensor 4, a terminating resistor 5, a shielded network cable 6, a multi-core cable 7, and a secondary controller 8.

[0053] The monitoring audible and visual alarm 2 is connected to the main controller 1 via a cable;

[0054] The main controller 1 is connected to several composite sensors 4 via twisted-pair shielded cables 3;

[0055] The beginning of the twisted-pair shielded cable 3 is connected to the main controller 1, and the end of the twisted-pair shielded cable 3 is connected to the terminating resistor 5.

[0056] The main controller 1 is connected to the secondary controller 8 via shielded network cable 6 and multi-core cable 7 respectively;

[0057] As attached Figure 2 As shown, the main controller 1 includes a controller chassis 9, a main control unit 10, a waterproof protective cover 11, a door lock 12, a fault audible and visual alarm 13, a power button 14, and a fire extinguishing start button 15;

[0058] The main control unit 10 is installed in the middle of the outer cover of the controller chassis 9;

[0059] The main control unit 10 is equipped with a waterproof protective cover 11.

[0060] The power button 14 and several fire extinguishing activation buttons 15 are arranged side by side on the outer cover of the controller housing 9;

[0061] The door lock 12 controls the outer cover switch of the controller housing 9;

[0062] The fault audible and visual alarm 13 is installed on the outer cover of the controller chassis 9.

[0063] The main control unit 10 integrates an industrial-grade tablet computer and a touch screen, with a waterproof protective cover 11 covering the touch screen.

[0064] The power button 14 and several fire extinguishing activation buttons 15 are all equipped with protective covers 21;

[0065] The power button 14 controls the on / off state of the main controller 1;

[0066] The fire extinguishing activation button 15 controls the main controller 1 to send a fire extinguishing electrical signal;

[0067] The audible and visual fault alarm 13 is located below the door lock 12;

[0068] The fault sound and light alarm 13 sounds an alarm when the main controller 1 experiences a power or communication failure.

[0069] As attached Figure 3 As shown, the controller chassis 9 contains a power module 16, a temperature control module 18, and an AIO module 19.

[0070] A backup power supply 20 is located at the bottom of the controller chassis 9.

[0071] The power module 16, temperature control module 18, AIO module 19, and backup power supply 20 are respectively connected to the terminal block 17 via cables for signal transmission.

[0072] The temperature control module 18 is installed inside the controller chassis 9 on the side.

[0073] Composite Sensor 4 incorporates smoke, temperature, and flame detectors;

[0074] The alarm signal from composite sensor 4 is transmitted to main controller 1 via RS485 bus;

[0075] The number of composite sensors 4 shall not exceed 32.

[0076] Specific Embodiment Two: Implementation Process of Fire Detection and Alarm Device for Rail Engineering Vehicles

[0077] The main controller 1 and the auxiliary controller 8 are installed in suitable positions in the front and rear driver's cabs of the vehicle, respectively. The composite sensor 4 is installed in the protected area of ​​the vehicle. The controller can receive and process the smoke, temperature and flame signals sent by the composite sensors in real time and display them on the touch screen of the main control unit 10. If the system experiences a power or communication failure, the fault audible and visual alarm 13 will issue an audible and visual alarm signal and display the fault location and alarm type on the screen.

[0078] When an abnormal situation such as a fire occurs in the protected area, the display screen will issue a fire alarm prompt, and the monitoring sound and light alarm 2 will simultaneously issue a sound and light alarm signal. After confirming the fire, the staff can manually press the fire extinguishing start button 15 for the protected area. The controller 1 will then send an electrical signal to activate the electrically controlled fire extinguishing device installed in the area to extinguish the fire. The alarm information will also be synchronously sent to the auxiliary controller 8 through the shielded network cable 6. The staff in the driver's cab can activate the fire extinguishing device in the same way.

[0079] When the vehicle is powered off, staff can send a signal through the backup power supply 20 of the controller to activate the fire extinguishing device.

[0080] Specific Embodiment Three: Electrical Principles of Fire Detection and Alarm Devices for Rail Engineering Vehicles

[0081] As attached Figure 4 As shown, the system connects to 4 sets of composite sensors 4, and controls 3 sets of electrically controlled fire extinguishing devices through 3 sets of fire extinguishing start buttons. When the driving pressure of the fire extinguishing device decreases, an alarm message will be issued.

[0082] 1. Interface relationships of various components

[0083] The composite sensor 4 and the AOI module 19 of the main controller 1 are connected in parallel to the industrial control computer on the same RS485 network;

[0084] The monitoring sound and light alarm 2 is connected to the DO interface (switching output) of the AOI module 19 in the main controller.

[0085] The alarm signal for reduced driving pressure of the fire extinguishing device is connected to the DI interface (switching input) of the AOI module 19 in the main controller.

[0086] The fire extinguishing activation button 15 is connected to the fire extinguishing device's electronic control valve;

[0087] The temperature controllers in the main and auxiliary controllers are connected to their respective temperature probes.

[0088] 2. Control relationships of each component

[0089] Fire alarm logic: When any one of the temperature alarm, smoke alarm, and flame alarm signals in composite sensor 4 reaches the alarm threshold, it is transmitted to the industrial control computer via RS485 network. After the industrial control computer determines the fire compartment where the alarm signal is located, it immediately drives the switch output signal of AOI module 19 to the monitoring audible and visual alarm, issues an audible and visual alarm, and displays the fire compartment on the screen. After receiving the alarm signal, the on-site personnel immediately determine the fire situation. If it is a real fire, they immediately press the corresponding fire compartment emergency start button on the main and auxiliary controllers to extinguish the fire.

[0090] Fault alarm logic: If the driving pressure of any one of the fire extinguishing devices reaches the lower limit, the low pressure alarm signal is activated. The AOI module 19 receives the switch input signal and transmits it to the industrial control computer through the RS485 network. The industrial control computer then triggers the fault alarm signal.

[0091] Low temperature protection logic: The main and auxiliary controllers have built-in temperature controllers and heaters. When the ambient temperature inside the chamber is below 1°C, the heater starts heating and stops heating when the temperature inside the chamber is above 5°C.

[0092] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire detection and alarm apparatus for a railway vehicle, characterized in that, Includes main controller (1), monitoring sound and light alarm (2), twisted pair shielded cable (3), composite sensor (4), terminating resistor (5), shielded network cable (6), multi-core cable (7), and secondary controller (8); The monitoring sound and light alarm (2) is connected to the main controller (1) via a cable. The main controller (1) is connected to several composite sensors (4) via twisted shielded cables (3). The beginning of the twisted-pair shielded cable (3) is connected to the main controller (1), and the end of the twisted-pair shielded cable (3) is connected to the terminating resistor (5). The main controller (1) is connected to the secondary controller (8) via shielded network cable (6) and multi-core cable (7); The main controller (1) includes a controller chassis (9), a main control unit (10), a waterproof protective cover (11), a door lock (12), a fault sound and light alarm (13), a power button (14), and a fire extinguishing start button (15).

2. The fire detection and alarm device for a rail engineering vehicle according to claim 1, characterized in that, The main control unit (10) is installed in the middle of the outer cover of the controller chassis (9); The main control unit (10) is provided with a waterproof protective cover (11). The power button (14) and several fire extinguishing start buttons (15) are arranged side by side on the outer cover of the controller housing (9); The door lock (12) controls the outer cover switch of the controller housing (9); The fault sound and light alarm (13) is installed on the outer cover of the controller chassis (9).

3. The fire detection and alarm apparatus for a rail vehicle according to claim 1, wherein The main control unit (10) is an industrial-grade tablet computer and a touch screen, and the touch screen is provided with a waterproof protective cover (11).

4. The fire detection and alarm apparatus for a rail vehicle according to claim 1, wherein The power button (14) and several fire extinguishing start buttons (15) are all equipped with protective covers (21). The power button (14) controls the switch of the main controller (1); The fire extinguishing start button (15) controls the main controller (1) to send out a fire extinguishing electrical signal.

5. The fire detection and alarm apparatus for a rail vehicle according to claim 2, wherein The fault audible and visual alarm (13) is located below the door lock (12); The fault audible and visual alarm (13) issues an alarm when the main controller (1) experiences a power or communication failure.

6. The fire detection and alarm apparatus for a rail vehicle according to claim 1, wherein The controller chassis (9) is equipped with a power module (16), a temperature control module (18) and an AIO module (19). A backup power supply (20) is provided at the bottom of the controller chassis (9); The power module (16), temperature control module (18), AIO module (19), and backup power supply (20) are respectively connected to the terminal block (17) via cables for signal transmission.

7. A fire detection and alarm apparatus for a rail engineering vehicle according to claim 6, characterised in that, The temperature control module (18) is installed inside the side of the controller chassis (9); The temperature control module (18) has a built-in temperature control probe and heater. When the ambient temperature inside the controller housing (9) is below 1°C, the heater starts heating. When the ambient temperature inside the controller housing (9) is above 5°C, the heater stops heating.

8. The fire detection and alarm apparatus for a rail vehicle according to claim 1, wherein The composite sensor (4) has built-in smoke, temperature and flame detectors; The alarm signal of the composite sensor (4) is transmitted to the main controller (1) via RS485 bus.

9. The fire detection and alarm apparatus for a rail vehicle according to claim 8, wherein The number of composite sensors (4) does not exceed 32.

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