Fire alarm control system

Abstract

The invention, which relates to the fire alarm field, discloses a fire alarm control system comprising a fire state acquisition module, a fire controller, a switch output module and a fire alarm module. Wherein the state acquisition module can acquire fire state information of each area in the railway vehicle, and when a fire occurs in any area, the fire controller can control the switching value output module to be closed. As one end of the switching value output module is connected with the train line, and the other end of the switching value output module is connected with the negative electrode of the power supply, the potential of the train line of the railway vehicle can be changed into 0V when the switching value output module is closed, and then the fire alarm module is switched on, so that a corresponding sound-light alarm is given out through the fire alarm module. According to the scheme, the fire alarm function can still be reliably completed on the premise that no extra intermediate relay is arranged, the equipment installation space is greatly reduced, the wiring length and the cable length are reduced, fault points are reduced, and the complexity of circuit structure design is reduced.

Description

Technical Field

[0001] The invention relates to the field of fire alarm, and in particular to a fire alarm control system. Background Art

[0002] In modern rail transit vehicles, users have increasingly diverse needs for fire status monitoring and interlocking control. Generally, existing fire controllers will output high-level fire status signals to the train line after detecting a fire, so as to control the sound and light alarms in the driver's cab. The IO modules of other systems can also directly obtain the results from the train line for monitoring.

[0003] However, for applications with different voltage levels, for example, the power supply voltage of the sound and light alarm circuit is DC (Direct current) 24V; if the fire status signal is still input with a high level DC72V, the fire sound and light alarm circuit and other modules must be transferred through relays, that is, by controlling the corresponding system's relay coil to be energized to control the corresponding system's relay contacts to close, in order to ensure that the corresponding fire sound and light alarm circuit and other modules are successfully started, so the number of relays used will increase; there are the following disadvantages:

[0004] 1. Occupy equipment installation space;

[0005] 2. Increase the wiring and the cable length;

[0006] 3. Adding electrical equipment will increase the number of failure points;

[0007] 4. Increase the complexity of circuit structure design. Summary of the invention

[0008] The purpose of the present invention is to provide a fire alarm control system. This solution can still reliably complete the fire alarm without setting up additional intermediate relays, greatly reducing the equipment installation space, reducing the wiring and cable length, reducing the fault points, and reducing the complexity of the circuit structure design.

[0009] In order to solve the above technical problems, the present invention provides a fire alarm control system, comprising: a fire status acquisition module, a fire alarm module, a fire controller, and a switch output module, all of which are arranged inside a rail vehicle;

[0010] The first end of the fire alarm sound and light module is connected to the first power supply, and the second end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding alarm;

[0011] The fire status acquisition module is used to acquire status information corresponding to a plurality of areas inside the rail vehicle;

[0012] The fire controller is connected to the control end of the fire status acquisition module and the switch output module respectively, and is used to control the switch output module to close when any state information that meets the preset fire condition exists in each state information;

[0013] The first end of the switch output module is connected to the train line, and the second end is connected to the negative pole of the power supply.

[0014] Optionally, it also includes: PIS system IO module and display device;

[0015] The display device is connected to a plurality of cameras and is used to display the images captured by the cameras after any of the cameras are turned on. The display device and the cameras are arranged inside the rail vehicle.

[0016] The PIS system IO module is connected to the train line and each of the cameras respectively, and is used to simultaneously receive the position information corresponding to the status information that meets the preset fire condition transmitted by the fire controller through the network when there is any status information that meets the preset fire condition among the status information, and control the camera corresponding to the position information to capture the image at the position information.

[0017] Optionally, also include:

[0018] An HVAC system IO module, wherein the HVAC system IO module is respectively connected to the train line and the air conditioning system inside the rail vehicle, and is used to control the air conditioning system inside the rail vehicle to shut down when any status information in the status information meets the preset fire condition.

[0019] Optionally, it further includes: a first unidirectional conduction module and a first protection device;

[0020] A first end of the first protection device is connected to the first power supply, and a second end is connected to the input end of the first unidirectional conduction module, and is used to disconnect when an overcurrent occurs in the circuit;

[0021] The output end of the first one-way conducting module is connected to the first end of the fire alarm module.

[0022] Optionally, also include:

[0023] A first OBCU system IO module, the first OBCU system IO module is connected to the fire controller and the train line respectively, and is used to open when the switch output module is closed, and transmit the status information that meets the first upload condition in each status information to the ground control center;

[0024] a second OBCU system IO module, wherein a first end of the second OBCU system IO module is connected to a moving contact of an intermediate relay, and is used for transmitting, after the coil of the intermediate relay is energized, status information satisfying a second upload condition in each status information to the ground control center, wherein the number of fire areas corresponding to the second upload condition is greater than the number of fire areas corresponding to the first upload condition;

[0025] The intermediate relay, the first end of the coil of the intermediate relay is connected to the second power supply, the second end of the coil of the intermediate relay is connected to the train line, and the static contact of the intermediate relay is connected to the second power supply, for closing the moving contact and the static contact when the coil is energized.

[0026] Optionally, it also includes: a second unidirectional conduction module and a second protection device;

[0027] The first end of the second protection device is connected to the second power supply, and the second end is respectively connected to the input end of the second unidirectional conduction module and the static contact of the intermediate relay, so as to be disconnected when an overcurrent occurs in the circuit;

[0028] The output end of the second unidirectional conduction module is connected to the first end of the coil of the intermediate relay.

[0029] Optionally, also include:

[0030] The TCMS system IO module is connected to the train line and the HMI respectively, and is used to transmit the status information that meets the preset fire conditions in each status information to the HMI through the network, so that the HMI can display the corresponding status.

[0031] Optionally, the fire alarm module includes: a sound alarm module and / or a display alarm module;

[0032] The input end of the sound alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding sound alarm;

[0033] and / or,

[0034] The input end of the display alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding display alarm.

[0035] Optionally, the fire status acquisition module includes: N smoke detectors and M smoke temperature detectors;

[0036] N of the smoke detectors and M of the smoke and temperature detectors are connected in series to the second communication bus of the rail vehicle;

[0037] Wherein, N smoke detectors are respectively arranged inside the rail vehicle and outside the rail vehicle, and are used to collect smoke information inside the rail vehicle or outside the rail vehicle;

[0038] The M smoke and temperature detectors are respectively arranged inside the rail vehicle and outside the rail vehicle, and the smoke and temperature detectors are used to collect smoke temperature information inside the rail vehicle or outside the rail vehicle; the second communication bus is connected to the fire controller.

[0039] Optionally, the fire status acquisition module further includes: a first temperature sensing cable and / or a second temperature sensing cable;

[0040] The first temperature sensing cable is arranged in the bogie area of ​​the rail vehicle, and the first temperature sensing cable is connected to the fire controller;

[0041] and / or,

[0042] The second temperature-sensing cable is arranged in an auxiliary inverter or a traction inverter of the rail vehicle, and the second temperature-sensing cable is connected to the fire controller.

[0043] The purpose of the present invention is to provide a fire alarm control system, which includes a fire status acquisition module, a fire alarm module, a fire controller and a switch output module, all of which are arranged inside a rail vehicle, wherein the fire status acquisition module can collect status information of various areas inside the rail vehicle, and when a fire occurs in any area, the fire controller will control the switch output module to close. Because one end of the switch output module is connected to the train line and the other end is connected to the negative pole of the power supply, when the switch output module is closed, the potential of the train line of the rail vehicle can be changed to 0V, thereby turning on the fire alarm module to issue a corresponding alarm through the fire alarm module. This solution can still reliably complete the fire alarm without setting an additional intermediate relay, greatly reducing the equipment installation space, reducing the wiring and cable length, reducing the fault points, and reducing the complexity of the circuit structure design. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0045] Figure 1 A structural schematic diagram of a fire alarm control system provided by the present invention;

[0046] Figure 2 A fire alarm control strategy schematic diagram provided by the present invention;

[0047] Figure 3 A fire alarm status collection schematic diagram provided by the present invention;

[0048] Figure 4 A schematic diagram of a fire alarm control and monitoring circuit provided by the present invention. DETAILED DESCRIPTION

[0049] The core of the present invention is to provide a fire alarm control system. This solution can still reliably complete the fire alarm function without setting up additional intermediate relays, greatly reducing the equipment installation space, reducing wiring and cable length, reducing failure points, and reducing the complexity of circuit structure design.

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0051] Please refer to Figure 1 , Figure 1 A structural diagram of a fire alarm control system provided by the present invention. The fire alarm control system comprises: a fire status acquisition module 1, a fire alarm module 2, a fire controller 3 and a switch output module 4, all of which are arranged inside a rail vehicle;

[0052] The first end of the fire alarm module 2 is connected to the first power supply, and the second end is connected to the train line of the rail vehicle, and is used to open when the switch output module 4 is closed and issue a corresponding alarm;

[0053] The fire status acquisition module 1 is used to collect status information corresponding to several areas inside the rail vehicle;

[0054] The fire controller 3 is connected to the control end of the fire status acquisition module 1 and the switch output module 4 respectively, and is used to control the switch output module 4 to close when any state information that meets the preset fire condition exists in each state information;

[0055] The first end of the switch output module 4 is connected to the train line, and the second end is connected to the negative pole of the power supply.

[0056] In the present invention, considering that in the prior art the fire controller 3 will output a high-level signal to the train line when a fire is detected, at this time the fire alarm module 2 will not be turned on, and if it is to be turned on, it needs to rely on an additional intermediate relay K_C, but the addition of the intermediate relay K_C will greatly increase the equipment installation space, while increasing the fault point and maintenance cost, so this solution sets a switch output module 4 to achieve normal opening of the fire alarm module 2 without the intermediate relay K_C, wherein the fire alarm control system includes a fire status acquisition module 1, a fire alarm module 2, a fire controller 3 and a switch output module 4 arranged inside the rail vehicle, the fire status acquisition module 1 can collect status information of various areas inside the rail vehicle, and when a fire occurs in any area inside the rail vehicle, the fire controller 3 will be turned on. The controller 3 will control the switching output module 4 to close. Because one end of the switching output module 4 is connected to the train line and the other end is connected to the negative pole of the power supply, when the switching output module 4 is closed, the potential of the train line of the rail vehicle can be changed to 0V. One end of the fire alarm module 2 is connected to the first power supply and the other end is connected to the train line. When the switching output module 4 is closed, the first power supply, the fire alarm module 2, the train line, the closed switching output module 4, and the ground wire form a path, thereby turning on the fire alarm module 2. At this time, the fire alarm module 2 can normally emit the corresponding sound and light alarm. This solution can still reliably complete the fire alarm without setting an additional intermediate relay K_C, which greatly reduces the equipment installation space, reduces the wiring and cable length, reduces the fault points, and reduces the complexity of the circuit structure design.

[0057] It should be noted that, for the fire control and monitoring functions of different voltage levels in the urban rail subway, considering that the negative electrode potentials of DC24V, DC72V and DC110V are equipotential points, the present invention proposes a control strategy based on a zero-volt effective train line. Each monitoring subsystem sets up IO to collect DC0V effectively and controls the negative electrode control loop of the sound and light alarm function at the same time, which can effectively avoid adding a transfer relay and solve the problems of fire signal collection matching and control compatibility of different voltages.

[0058] It should also be noted that, taking a three-carriage subway vehicle as an example, the principle structure diagram of the control strategy of the zero-volt effective train line is as follows: Figure 2 As shown. Among them, car A is a trailer with a driver's cab, and cars B and C are motor vehicles;

[0059] FA and FC represent protective air switches (protective equipment) installed in cars A and C respectively;

[0060] VDA and VDC represent the isolation diodes set in the control circuits of cars A and C respectively;

[0061] K1 indicates the occupancy relay set in the driver's cab of car A;

[0062] K_C represents the intermediate relay K_C set in car C;

[0063] HA indicates the indicator light set on car A;

[0064] IO1 represents the IO acquisition interface (PIS (Passenger Information System) system IO module) set in the PIS system of car A;

[0065] IO2, IO3, and IO5 represent the IO acquisition interfaces (HVAC system IO modules) set in the HVAC systems of cars A, B, and C respectively;

[0066] IO4 represents the IO acquisition interface of the TCMS system in Car B (TCMS (Train Control and Management System) system IO module);

[0067] PIS stands for passenger information system, TCU1 and TCU2 both stand for traction inverters, HVAC (Heating, Ventilation and Air Conditioning) stands for air conditioning system, and OBCU system stands for on-board signal system. This solution can also control the switch output module 4 in cars B and C by using the temperature sensing cables installed in TCU (Transmission Control Unit) 1 and TCU2.

[0068] The load shown in box 1 includes an alarm speaker and an indicator light (fire alarm module 2), and the corresponding voltage level is DC24V;

[0069] Box 2 shows the fire input monitoring of the PIS system controller, and the corresponding voltage level is DC72V;

[0070] Box 3 shows the fire input monitoring of the HVAC system controller, and the corresponding voltage level is DC72V;

[0071] Box 4 shows the fire input monitoring of the TCMS system controller, and the corresponding voltage level is DC72V;

[0072] Box 5 shows the fire input monitoring of the OBCU (On-Board Control Unit) system controller, and the corresponding voltage level is DC110V; box 5_1 corresponds to the low-level input being valid, and box 5_2 corresponds to the high-level input being valid, but the importance of the information uploaded by the OBCU system controller corresponding to box 5_2 is greater than that of the OBCU system controller corresponding to box 5_1.

[0073] The positive pole of frame 1 is connected to the DC24V power supply, and the negative pole is controlled by the fire train line.

[0074] The inputs of Box 2, Box 3, Box 4, and Box 5_1 directly collect the status of the fire train line.

[0075] Frame 5_2 uses high-level acquisition to be effective, and the fire signal is transferred through the intermediate relay K_C. The negative pole of the intermediate relay K_C is controlled by the fire train line, and the positive pole is isolated from the DC24V power supply circuit through a diode (one-way conduction module).

[0076] It should also be noted that when the fire controller 3 monitors that the internal conditions are met or the TCU of the intermediate car (car B or car C) monitors that the temperature sensing cable is blown, it controls the internal dry contact to close and outputs DC0V to the fire train line, thereby controlling the normal power supply of the load in frame 1. Frames 2, 3, 4, and 5_1 can directly collect the 0V train line, and frame 5_2 monitors the effective fire signal through the transfer relay, and then executes the next effective action.

[0077] It should also be noted that when the corresponding control logic conditions are not met, the control train line is in an invalid state, that is, the fire controller 3 does not detect the fire situation and does not control the switch output module 4 to be closed. Power supplies of different voltage levels avoid voltage series connection due to the isolation of diodes; control panels of different voltage levels should be able to meet the input of the highest voltage.

[0078] The present embodiment provides a fire alarm control system, which includes a fire status acquisition module 1, a fire alarm module 2, a fire controller 3 and a switch output module 4, all of which are arranged inside a rail vehicle. The fire status acquisition module 1 can collect status information of various areas inside the rail vehicle, and when a fire occurs in any area, the fire controller 3 will control the switch output module 4 to close. Because one end of the switch output module 4 is connected to the train line and the other end is connected to the negative pole of the power supply, when the switch output module 4 is closed, the potential of the train line of the rail vehicle can be changed to 0V, thereby turning on the fire alarm module 2 to issue a corresponding alarm through the fire alarm module 2. This solution can still reliably complete the fire alarm without setting an additional intermediate relay K_C, greatly reducing the equipment installation space, reducing the wiring and cable length, reducing the fault points, and reducing the complexity of the circuit structure design.

[0079] Based on the above embodiments:

[0080] As an optional embodiment, it also includes: a PIS system IO module and a display device;

[0081] The display device is connected to a plurality of cameras and is used to display the images captured by the cameras after any camera is turned on. The display device and the cameras are arranged inside the rail vehicle;

[0082] The PIS system IO module is connected to the train line and each camera respectively, and is used to receive the position information corresponding to the status information that meets the preset fire conditions transmitted by the fire controller 3 through the network when there is any status information that meets the preset fire conditions in the status information, and control the camera corresponding to the position information to capture the image at the position information.

[0083] In the present invention, a PIS system IO module and a display device are also provided in the fire alarm control system, wherein the PIS system IO module is connected to the train line. Because the PIS system IO module is a low-level starting module, when the fire controller 3 determines that a fire occurs in an area inside the rail vehicle based on the status signal collected by the fire status collection module 1, it will control the switch output module 4 to close. At this time, the train line is at zero potential. Therefore, the PIS system IO module is started after connecting to zero potential, and after receiving the position information corresponding to the status information transmitted by the fire controller 3, the camera corresponding to the position information is controlled to capture the image at the position information, and the captured image is displayed on the display device. Because the display device is arranged inside the rail vehicle, it is convenient for passengers and drivers inside the rail vehicle to observe the specific situation of the fire area, facilitate timely evacuation or fire fighting, and improve safety.

[0084] As an optional embodiment, it also includes:

[0085] The HVAC system IO module is connected to the air conditioning system inside the train line and the rail vehicle respectively, and is used to control the air conditioning system inside the rail vehicle to shut down when any status information in the status information meets the preset fire conditions.

[0086] In the present invention, an HVAC system IO module is also provided in the fire alarm control system, and the HVAC system IO module is connected to the train line. Because the HVAC system IO module is a low-level starting module, when the fire controller 3 determines that a fire occurs in an area inside the rail vehicle according to the status signal collected by the fire status acquisition module 1, it will control the switch output module 4 to close. At this time, the train line is at zero potential, so the HVAC system IO module is started after connecting to zero potential. Because the HVAC system IO module is connected to the air-conditioning system inside the rail vehicle, the HVAC system IO module will control the air-conditioning system to shut down after starting, so as to prevent the air-conditioning system from being affected by the fire situation and threatening the safety of passengers, thereby improving the safety of the solution.

[0087] As an optional embodiment, it further includes: a first unidirectional conduction module VDA and a first protection device;

[0088] The first end of the first protection device is connected to the first power supply, and the second end is connected to the input end of the first unidirectional conduction module VDA, and is used to disconnect when an overcurrent occurs in the circuit;

[0089] The output end of the first unidirectional conduction module VDA is connected to the first end of the fire alarm module 2 .

[0090] In the present invention, because the fire alarm module 2 is connected to the first power supply, in order to ensure that the current in the circuit is not backflowed after the switch output module 4 is closed, it is necessary to add a first unidirectional conduction module VDA between the first power supply and the fire alarm module 2. In addition, considering that a sudden increase in the current input by the first power supply will affect the normal operation of the fire alarm module 2, a first protection device is also provided between the first power supply and the fire alarm module 2, which can be disconnected when an overcurrent occurs in the circuit, thereby protecting the normal operation of the fire alarm module 2 and providing early warning to passengers and drivers.

[0091] It should be noted that, in actual use, the protection device may be an air switch, or a protection device such as a fuse or a fuse, and the unidirectional conduction module may be a diode or other unidirectional conduction devices.

[0092] As an optional embodiment, it also includes:

[0093] The first OBCU system IO module is connected to the fire controller 3 and the train line respectively, and is used to open when the switch output module 4 is closed, and transmit the status information that meets the first upload condition in each status information to the ground control center;

[0094] A second OBCU system IO module, wherein a first end of the second OBCU system IO module is connected to a moving contact of the intermediate relay K_C, and is used to transmit the status information satisfying the second upload condition in each status information to the ground control center after the coil of the intermediate relay K_C is energized, and the number of fire areas corresponding to the second upload condition is greater than the number of fire areas corresponding to the first upload condition;

[0095] Intermediate relay K_C, the first end of the coil of the intermediate relay K_C is connected to the second power supply, the second end of the coil of the intermediate relay K_C is connected to the train line, and the static contact of the intermediate relay K_C is connected to the second power supply, which is used to close the moving contact and the static contact when the coil is energized.

[0096] In the present invention, the fire alarm control system is further provided with a first OBCU system IO module, a second OBCU system IO module and an intermediate relay K_C, wherein the first OBCU system IO module is connected to the train line. Because the first OBCU system IO module is a low-level starting module, when the fire controller 3 determines that a fire occurs in an area inside the rail vehicle according to the status signal collected by the fire status acquisition module 1, it will control the switch output module 4 to close. At this time, the train line is at zero potential, so the first OBCU system IO module is started after being connected to zero potential. After the first OBCU system IO module is started, the status information sent by the fire controller 3 will be The information that meets the first upload condition is transmitted to the ground control center so that the ground control center can perform corresponding subsequent maintenance; in addition, because the second OBCU system IO module is started at a high level, it is necessary to add an intermediate relay K_C. The coil of the intermediate relay K_C is respectively connected to the second power supply and the train line. When the switch output module 4 is closed, the coil of the intermediate relay K_C is energized, and the corresponding moving contact and static contact are closed. The second OBCU system IO module is started and the information that meets the second upload condition in the status information sent by the fire controller 3 is transmitted to the ground control center so that the ground control center can perform corresponding subsequent maintenance, thereby improving the reliability of the solution.

[0097] As an optional embodiment, it further includes: a second unidirectional conduction module VDC and a second protection device;

[0098] The first end of the second protection device is connected to the second power supply, and the second end is respectively connected to the input end of the second unidirectional conduction module VDC and the static contact of the intermediate relay K_C, so as to be disconnected when an overcurrent occurs in the circuit;

[0099] The output end of the second unidirectional conduction module VDC is connected to the first end of the coil of the intermediate relay K_C.

[0100] In the present invention, because the coil of the intermediate relay K_C is connected to the second power supply, in order to ensure that the current in the loop does not flow back after the switch output module 4 is closed, it is necessary to add a second unidirectional conduction module VDC between the second power supply and the coil of the intermediate relay K_C. In addition, considering that the sudden increase in the current input by the second power supply will affect the normal operation of the second OBCU system IO module, a second protection device is also set between the second power supply and the second OBCU system IO module, which can be disconnected when an overcurrent occurs in the loop, thereby protecting the normal operation of the second OBCU system IO module, so that the second OBCU system IO module can send information to the ground control center in time.

[0101] As an optional embodiment, it also includes:

[0102] TCMS system IO module: The TCMS system IO module is connected to the train line and HMI respectively, and is used to transmit the status information that meets the preset fire conditions in each status information to the HMI through the network, so that the HMI can display the corresponding status.

[0103] In the present invention, a TCMS system IO module is also provided in the fire alarm control system, wherein the TCMS system IO module is connected to the train line. Because the TCMS system IO module is a low-level starting module, when the fire controller 3 determines that a fire occurs in an area inside the rail vehicle according to the status signal collected by the fire status acquisition module 1, it will control the switch output module 4 to close. At this time, the train line is at zero potential, so the TCMS system IO module is started after being connected to zero potential. After starting, the TCMS system IO module will transmit the status information that meets the preset fire conditions in each status information to the HMI (Human Machine Interface) so that the HMI can display the corresponding status in time.

[0104] As an optional embodiment, the fire alarm module 2 includes: a sound alarm module and / or a display alarm module;

[0105] The input end of the sound alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle, and is used to open when the switch output module 4 is closed and issue a corresponding sound alarm;

[0106] and / or,

[0107] The input end of the display alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle. It is used to open when the switch output module 4 is closed and issue a corresponding display alarm.

[0108] In the present invention, the fire alarm module 2 may be provided with only a sound alarm module, or only a display alarm module, or both a sound alarm module and a display alarm module, wherein the sound alarm module functions to issue a corresponding sound alarm, and the display alarm module functions to issue a corresponding display alarm. Of course, providing both a sound alarm module and a display alarm module can simultaneously issue a sound alarm and a display alarm when a fire occurs, making it easier for users or drivers to receive fire warnings.

[0109] As an optional embodiment, the fire status acquisition module 1 includes: N smoke detectors and M smoke temperature detectors;

[0110] N smoke detectors and M smoke and temperature detectors are connected in series to a second communication bus of the rail vehicle;

[0111] Wherein, N smoke detectors are respectively arranged inside and outside the rail vehicle, and are used to collect smoke information inside or outside the rail vehicle;

[0112] M smoke and temperature detectors are respectively arranged inside and outside the rail vehicle, and the smoke and temperature detectors are used to collect smoke temperature information inside or outside the rail vehicle; the second communication bus is connected to the fire controller 3.

[0113] In the present invention, the fire status acquisition module 1 includes N smoke detectors and M smoke temperature detectors, which are respectively arranged inside or outside the rail vehicle. If a fire occurs inside or outside the rail vehicle, the smoke detectors will collect the smoke generation and generate a corresponding signal to send to the fire controller 3. Similarly, if a fire occurs inside or outside the rail vehicle, the smoke temperature detectors will detect the temperature of the generated smoke and send the temperature signal to the fire controller 3, so that the fire controller 3 can promptly control the switch output module 4 to close.

[0114] As an optional embodiment, the fire status acquisition module 1 further includes: a first temperature sensing cable and / or a second temperature sensing cable;

[0115] The first temperature sensing cable is arranged in the bogie area of ​​the rail vehicle, and the first temperature sensing cable is connected to the fire controller 3;

[0116] and / or,

[0117] The second temperature sensing cable is arranged in the auxiliary inverter or the traction inverter of the rail vehicle, and the second temperature sensing cable is connected to the fire controller 3 .

[0118] In the present invention, considering that a plurality of important equipment is arranged in the bogie area of ​​the rail vehicle, the present application further arranges a first temperature sensing cable in the bogie area of ​​the rail vehicle. Furthermore, considering the importance of the auxiliary inverter or the traction inverter of the rail vehicle, the present solution further arranges a second temperature sensing cable in the auxiliary inverter or the traction inverter, so as to detect whether a fire occurs in the bogie area, the auxiliary inverter or the traction inverter of the rail vehicle through the first temperature sensing cable or the second temperature sensing cable, thereby improving the comprehensiveness of fire detection.

[0119] It should be noted that, taking the example of a 3-car subway train: Car A-Car B-Car C, Figure 3 As shown, FAC (Fire Alarm Control host) represents the fire alarm host, FASC (Fire Alarm Sub Control) represents the fire alarm extension; MD represents the smoke and temperature detector, SD represents the smoke detector, LHD represents the temperature sensing cable, and APS represents the auxiliary inverter. 1. Six smoke detectors and four smoke and temperature detectors are installed in the passenger compartment of each car, and are connected to the fire system through two buses; 2. Temperature sensing cables are installed in the bogie area under each car, and are connected to the IO of the fire system; 3. Temperature sensing cables are installed in the auxiliary inverter of car A and the traction inverters of cars B and C, and are connected to the IO (Input / Output) interface of the fire system; 4. A fire alarm host is installed in car A, and fire alarm extensions are installed in cars B and C; 5. The fire alarm system adopts CAN (Controller Area Network) communication mode, and the fire alarm host and TCMS adopt MVB (Multifunction Vehicle Bus) communication.

[0120] It should also be noted that the control circuit of the fire alarm is Figure 4 When the fire alarm is triggered, any one of the following fire triggering conditions will suffice:

[0121] Fire trigger condition 1: The trigger condition of any passenger room smoke detector is met;

[0122] Fire trigger condition 2: The temperature sensing cable of any auxiliary inverter box or traction inverter is blown;

[0123] Fire triggering condition 3: The temperature sensing cable in any bogie area melts.

[0124] When the fire output train line is valid (the switch output module 4 is closed and the train line is at zero potential), the control function and subsystem linkage function are described as follows.

[0125] 1. The FAC host controls whether the corresponding dry contact is closed according to the fire signal, and controls the train line in the fire state;

[0126] 2. The buzzer alarm and fire indicator light on the driver's station light up (voltage level is DC24V), controlling the negative pole of the load;

[0127] 3. The IO acquisition of PIS is effective (voltage level is DC72V), the low-level DC0V input is effective, the fire host reports the specific location of the fire probe, the passenger room camera is linked and the fire area is displayed in real time on the CCTV screen, so that the people on the bus can confirm the fire status;

[0128] 4. HVAC IO collection (voltage level is DC72V), low-level DC0V input is valid, and the HVAC system directly turns off the air conditioning system of the train according to this signal;

[0129] 5. TCMS IO acquisition (voltage level is DC72V), low-level DC0V input is valid, TCMS reports the fire fault prompt on the HMI based on this signal and the fire fault reporting information;

[0130] 6. IO board acquisition of OBCU signal system (voltage level is DC110V), the voltage is DC110V, high-level DC110V input is valid, and acquisition is carried out through the transfer relay.

[0131] It should also be noted that scenario 1: when fire trigger condition 1 is met. The specific working process is described as follows:

[0132] When the fire detector of a car is activated, the detector transmits the smoke status to the fire alarm host through bus transmission, and the fire alarm host performs the following actions:

[0133] 1. Diagnose the corresponding fire alarm status and upload it to TCMS;

[0134] 2. The fire alarm status of the probe is recorded in the controller;

[0135] 3. At the same time, control the output dry contact to close.

[0136] The actions performed for other subsystems are as follows:

[0137] 1. There are sound and light alarm signals of fire on the driver's console.

[0138] 2. The PIS system automatically uploads the data of the corresponding camera to the CCTV (Closed Circuit Television) screen according to the position of the probe;

[0139] 3. The HVAC system directly shuts down the air conditioning system according to the effective status of the fire;

[0140] 4. The TCMS system displays specific fire detector fire alarm signals on the HMI (human-machine interface);

[0141] 5. The OBCU signal system sends the fire signal and specific fire location to the ground control center OCC (Operation Control Center).

[0142] Scenario 2: When fire trigger condition 2 is met, all actions except the video linkage performed by the PIS system in the above actions can be realized. At the same time, the auxiliary inverter or traction inverter will cut off the output to reduce the impact of high temperature or fire.

[0143] Scenario 3: When fire trigger condition 3 is met, all actions except the video linkage performed by the PIS system in the above actions can be realized. At the same time, the traction inverter or auxiliary inverter of this car will cut off the output to reduce the impact of high temperature or fire.

[0144] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0145] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fire alarm control system, characterized in that: include: Fire status acquisition module, fire alarm module, fire controller, and switch output module are all installed inside the rail vehicle; The first end of the fire alarm sound and light module is connected to the first power supply, and the second end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding alarm; The fire status acquisition module is used to acquire status information corresponding to a plurality of areas inside the rail vehicle; The fire controller is connected to the control end of the fire status acquisition module and the switch output module respectively, and is used to control the switch output module to close when any state information that meets the preset fire condition exists in each state information; The first end of the switch output module is connected to the train line, and the second end is connected to the negative pole of the power supply.

2. The fire alarm control system according to claim 1, characterized in that: Also includes: PIS system IO modules and display devices; The display device is connected to a plurality of cameras and is used to display the images captured by the cameras after any of the cameras are turned on. The display device and the cameras are arranged inside the rail vehicle. The PIS system IO module is connected to the train line and each of the cameras respectively, and is used to simultaneously receive the position information corresponding to the status information that meets the preset fire condition transmitted by the fire controller through the network when there is any status information that meets the preset fire condition among the status information, and control the camera corresponding to the position information to capture the image at the position information.

3. The fire alarm control system according to claim 1, characterized in that: Also includes: An HVAC system IO module, wherein the HVAC system IO module is respectively connected to the train line and the air conditioning system inside the rail vehicle, and is used to control the air conditioning system inside the rail vehicle to shut down when any status information in the status information meets the preset fire condition.

4. The fire alarm control system according to claim 1, characterized in that: Also includes: A first unidirectional conduction module and a first protection device; A first end of the first protection device is connected to the first power supply, and a second end is connected to the input end of the first unidirectional conduction module, and is used to disconnect when an overcurrent occurs in the circuit; The output end of the first one-way conducting module is connected to the first end of the fire alarm module.

5. The fire alarm control system according to claim 1, characterized in that: Also includes: A first OBCU system IO module, the first OBCU system IO module is connected to the fire controller and the train line respectively, and is used to open when the switch output module is closed, and transmit the status information that meets the first upload condition in each status information to the ground control center; a second OBCU system IO module, wherein a first end of the second OBCU system IO module is connected to a moving contact of an intermediate relay, and is used for transmitting, after the coil of the intermediate relay is energized, status information satisfying a second upload condition in each status information to the ground control center, wherein the number of fire areas corresponding to the second upload condition is greater than the number of fire areas corresponding to the first upload condition; The intermediate relay, the first end of the coil of the intermediate relay is connected to the second power supply, the second end of the coil of the intermediate relay is connected to the train line, and the static contact of the intermediate relay is connected to the second power supply, for closing the moving contact and the static contact when the coil is energized.

6. The fire alarm control system according to claim 5, characterized in that: Also includes: A second unidirectional conduction module and a second protection device; The first end of the second protection device is connected to the second power supply, and the second end is respectively connected to the input end of the second unidirectional conduction module and the static contact of the intermediate relay, so as to be disconnected when an overcurrent occurs in the circuit; The output end of the second unidirectional conduction module is connected to the first end of the coil of the intermediate relay.

7. The fire alarm control system according to claim 1, characterized in that: Also includes: The TCMS system IO module is connected to the train line and the HMI respectively, and is used to transmit the status information that meets the preset fire conditions in each status information to the HMI through the network, so that the HMI can display the corresponding status.

8. The fire alarm control system according to claim 1, characterized in that: The fire alarm module comprises: a sound alarm module and / or a display alarm module; The input end of the sound alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding sound alarm; and / or, The input end of the display alarm module is connected to the first power supply, and the output end is connected to the train line of the rail vehicle, and is used to open when the switch output module is closed and issue a corresponding display alarm.

9. The fire alarm control system according to any one of claims 1 to 8, characterized in that: The fire status acquisition module includes: N smoke detectors and M smoke temperature detectors; N of the smoke detectors and M of the smoke and temperature detectors are connected in series to the second communication bus of the rail vehicle; Wherein, N smoke detectors are respectively arranged inside the rail vehicle and outside the rail vehicle, and are used to collect smoke information inside the rail vehicle or outside the rail vehicle; The M smoke and temperature detectors are respectively arranged inside the rail vehicle and outside the rail vehicle, and the smoke and temperature detectors are used to collect smoke temperature information inside the rail vehicle or outside the rail vehicle; the second communication bus is connected to the fire controller.

10. The fire alarm control system according to claim 9, characterized in that: The fire status acquisition module further includes: a first temperature sensing cable and / or a second temperature sensing cable; The first temperature sensing cable is arranged in the bogie area of ​​the rail vehicle, and the first temperature sensing cable is connected to the fire controller; and / or, The second temperature-sensing cable is arranged in an auxiliary inverter or a traction inverter of the rail vehicle, and the second temperature-sensing cable is connected to the fire controller.

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