A fire alarm control system

Abstract

The application discloses a fire alarm control system, and relates to the field of fire alarm, wherein the fire alarm control system comprises a fire state acquisition module, a fire controller, a switch output module and a fire alarm module. The state acquisition module can acquire fire state information of each region inside a rail vehicle, and the fire controller controls the switch output module to be closed when a fire occurs in any region. Because one end of the switch output module is connected with a train line, and the other end is connected with a negative pole of a power supply, when the switch output module is closed, the potential of the train line of the rail vehicle becomes 0V, and the fire alarm module is turned on, so that corresponding sound and light alarms are sent through the fire alarm module. The scheme can still reliably complete the fire alarm function without setting an additional intermediate relay, greatly reduces the equipment installation space, reduces wiring and cable length, reduces fault points, and reduces the complexity of circuit structure design.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire alarm, in particular to a fire alarm control system. BACKGROUND

[0002] In modern rail transit vehicles, users have increasingly diverse needs for monitoring and interlocking control of fire conditions. Generally, existing fire controllers output a high-level fire condition signal to the train line after detecting a fire condition, so as to control the sound and light alarm in the driver's room to work, and the IO module of other systems can also directly monitor the results from the train line.

[0003] However, for different voltage level application occasions, for example, the power supply voltage of the sound and light alarm circuit is DC (Direct current) 24V; if the fire condition signal is still input by a high-level DC 72V, the fire sound and light alarm circuit and other modules need to be transferred through a relay, that is, by controlling the power supply of the relay coil of the corresponding system, to control the closing of the relay contact of the corresponding system, so as to ensure the successful start of the corresponding fire sound and light alarm circuit and other modules, so the number of relays will be increased; the following disadvantages are caused:

[0004] 1. Occupying equipment installation space;

[0005] 2. Increasing wiring and cable length;

[0006] 3. Increasing electrical equipment and increasing fault points;

[0007] 4. Increasing the complexity of circuit structure design. SUMMARY

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

[0009] To solve the above technical problems, the present application provides a fire alarm control system, comprising: a fire condition acquisition module, a fire alarm module, a fire controller and a on-off output module, which are all arranged in the interior of a rail vehicle.

[0010] The first end of the fire alarm sound and light module is connected with a first power supply, and the second end is connected with the train line of the rail vehicle, for turning on and issuing corresponding alarm when the on-off output module is closed.

[0011] The fire condition acquisition module is used for acquiring state information corresponding to a plurality of regions in the interior of the rail vehicle.

[0012] The fire controller is connected with the control end of the fire state acquisition module and the switch output module respectively, and is used for controlling the switch output module to be closed when any one of the state information meets the preset fire condition.

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

[0014] Optionally, the PIS system IO module and a display device are further included.

[0015] The display device is connected with a plurality of cameras, and is used for displaying the picture taken by any one of the cameras after the camera is turned on. The display device and each of the cameras are arranged in the rail vehicle.

[0016] The PIS system IO module is connected with the train line and each of the cameras respectively, and is used for receiving the position information corresponding to the state information meeting the preset fire condition transmitted by the fire controller through the network when any one of the state information meets the preset fire condition, and controlling the camera corresponding to the position information to take the picture at the position information.

[0017] Optionally, the HVAC system IO module is further included.

[0018] The HVAC system IO module is connected with the train line and the air conditioning system in the rail vehicle respectively, and is used for controlling the air conditioning system in the rail vehicle to be closed when any one of the state information meets the preset fire condition.

[0019] Optionally, the first unidirectional conduction module and the first protection device are further included.

[0020] The first end of the first protection device is connected with the first power supply, and the second end is connected with the input end of the first unidirectional conduction module, and is used for being disconnected when overcurrent occurs in the loop.

[0021] The output end of the first unidirectional conduction module is connected with the first end of the fire alarm module.

[0022] Optionally, the first OBCU system IO module is further included.

[0023] The first OBCU system IO module is connected with the fire controller and the train line respectively, and is used for being turned on when the switch output module is closed, and transmitting the state information meeting the first uploading condition to the ground control center.

[0024] A second OBCU system IO module, a first end of the second OBCU system IO module is connected with a moving contact of an intermediate relay, and is used for transmitting state information meeting a second uploading condition to the ground control center after a coil of the intermediate relay is powered, the second uploading condition corresponds to a number of fire areas greater than a number of fire areas corresponding to the first uploading condition;

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

[0026] Optionally, the system further comprises a second unidirectional conduction module and a second protection device.

[0027] A first end of the second protection device is connected with the second power supply, and a second end of the second protection device is connected with an input end of the second unidirectional conduction module and the static contact of the intermediate relay respectively, and is used for being disconnected when overcurrent occurs in a loop.

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

[0029] Optionally, the system further comprises:

[0030] A TCMS system IO module, the TCMS system IO module is connected with the train line and an HMI respectively, and is used for transmitting state information meeting the preset fire condition to the HMI through a network, so that the HMI displays corresponding states.

[0031] Optionally, the fire alarm module comprises a sound alarm module and / or a display alarm module.

[0032] An input end of the sound alarm module is connected with the first power supply, and an output end of the sound alarm module is connected with the train line of the railway vehicle, and is used for being turned on when the on-off output module is closed, and emitting corresponding sound alarm.

[0033] and / or,

[0034] An input end of the display alarm module is connected with the first power supply, and an output end of the display alarm module is connected with the train line of the railway vehicle, and is used for being turned on when the on-off output module is closed, and emitting corresponding display alarm.

[0035] Optionally, the fire state acquisition module comprises N smoke detectors and M smoke temperature detectors.

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

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

[0038] M smoke temperature detectors are arranged inside and outside the rail vehicle respectively, and are used to collect smoke temperature information inside or outside the rail vehicle.

[0039] Optionally, the fire state acquisition module further comprises a first temperature sensing cable and / or a second temperature sensing cable.

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

[0043] The purpose of the present application is to provide a fire alarm control system, which comprises a fire state acquisition module, a fire alarm module, a fire controller and a switching output module, all of which are arranged inside the rail vehicle. The fire state acquisition module can collect state information of each area inside the rail vehicle, and when a fire occurs in any area, the fire controller controls the switching output module to close. Since one end of the switching output module is connected to the train line and the other end is connected to the negative electrode of the power supply, when the switching output module is closed, the potential of the train line of the rail vehicle becomes 0V, thereby turning on the fire alarm module to issue an alarm through the fire alarm module. This scheme can still reliably complete the fire alarm without setting an additional intermediate relay, greatly reducing the equipment installation space, the wiring and the cable length, reducing the fault points and the complexity of the circuit structure design. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0045] Figure 1 A structural schematic diagram of a fire alarm control system provided by the present application is shown in the figure;

[0046] Figure 2 A fire alarm control strategy principle diagram provided by the present application is shown in the figure;

[0047] Figure 3 A fire alarm state collection schematic diagram provided by the present application is shown in the figure;

[0048] Figure 4 A fire alarm control and monitoring circuit schematic diagram provided by the present application is shown in the figure. DETAILED DESCRIPTION

[0049] The core of the present application is to provide a fire alarm control system, which can still reliably complete the fire alarm function 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.

[0050] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0051] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a fire alarm control system provided by the present application is shown in the figure. The fire alarm control system comprises a fire state collection module 1, a fire alarm module 2, a fire controller 3 and a on-off output module 4, which are all arranged inside a railway vehicle.

[0052] The first end of the fire alarm module 2 is connected with a first power supply, and the second end is connected with a train line of the railway vehicle, for being turned on when the on-off output module 4 is closed and issuing a corresponding alarm;

[0053] The fire state collection module 1 is used for collecting state information corresponding to a plurality of regions inside the railway vehicle;

[0054] The fire controller 3 is connected with the control end of the fire state collection module 1 and the on-off output module 4 respectively, for controlling the on-off output module 4 to be closed when any one of the state information meets a preset fire condition;

[0055] The first end of the on-off output module 4 is connected with the train line, and the second end is connected with the negative pole of the power supply.

[0056] In the present application, considering that the fire controller 3 in the prior art outputs a high level signal to the train line when detecting a fire condition, at this time the fire alarm module 2 does not open, and if it is to be opened, it needs to rely on an additionally set intermediate relay K_C, but the increase of the intermediate relay K_C greatly increases the equipment installation space, and meanwhile increases the fault points and maintenance cost, so the present scheme realizes the normal opening of the fire alarm module 2 under the premise of no intermediate relay K_C by setting the on-off output module 4, wherein the fire alarm control system comprises a fire state acquisition module 1, a fire alarm module 2, a fire controller 3 and an on-off output module 4 arranged in the railway vehicle, the fire state acquisition module 1 can acquire the state information of each region in the railway vehicle, when a fire condition occurs in any region in the railway vehicle, the fire controller 3 controls the on-off output module 4 to be closed, because one end of the on-off output module 4 is connected to the train line and the other end is connected to the negative pole of the power supply, so when the on-off output module 4 is closed, the potential of the train line of the railway vehicle can be changed to 0V, and 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 on-off output module 4 is closed, the first power supply, the fire alarm module 2, the train line, the closed on-off output module 4 and the ground wire form a path, thereby conducting the fire alarm module 2, at this time the fire alarm module 2 can normally issue corresponding sound and light alarms, the present scheme can still reliably complete the fire alarm under the premise of not 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.

[0057] It should be noted that for the fire control and monitoring functions of different voltage levels in the urban rail metro, since the negative potentials of DC24V, DC72V and DC110V are equipotential points, the present application proposes a control strategy based on zero-volt effective train line, each monitoring subsystem acquires DC0V through setting IO, and at the same time controls the negative control loop of the sound and light alarm function, which can effectively avoid increasing the transfer relay, and solves the problems of fire signal acquisition matching and control compatibility of different voltages.

[0058] It should be further noted that the principle structure diagram of the control strategy of the zero-volt effective train line of the railway vehicle is shown in Figure 2 A vehicle is a trailer with a driver's room, and B vehicle and C vehicle are motor cars;

[0059] FA and FC respectively represent protection air switches (protection devices) arranged in A and C vehicles;

[0060] VDA and VDC respectively represent control circuit isolation diodes arranged in A and C vehicles;

[0061] K1 represents an occupancy relay arranged in the driver's room of A vehicle;

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

[0063] HA represents the indicator light set in the A car;

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

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

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

[0067] PIS represents the passenger information system, TCU1 and TCU2 both represent traction inverters, HVAC (Heating, Ventilation and Air Conditioning) represents the air conditioning system, and OBCU system represents the on-board signal system. The present scheme can also control the switch output module 4 by using the temperature sensing cable set in the TCU (Transmission Control Unit) 1 and TCU2 in the B car and the C car.

[0068] The load contained in the block 1 includes an alarm horn and an indicator light (fire alarm module 2), and the corresponding voltage level is DC 24V;

[0069] The block 2 represents the fire input monitoring of the PIS system controller, and the corresponding voltage level is DC 72V;

[0070] The block 3 represents the fire input monitoring of the HVAC system controller, and the corresponding voltage level is DC 72V;

[0071] The block 4 represents the fire input monitoring of the TCMS system controller, and the corresponding voltage level is DC 72V;

[0072] The block 5 shows the fire input monitoring of the OBCU (On-Board Control Unit) system controller, and the corresponding voltage level is DC 110V; wherein the block 5_1 corresponds to the low-level input effective, and the block 5_2 corresponds to the high-level input effective, but the importance of the information uploaded on the OBCU system controller corresponding to the block 5_2 is greater than that of the OBCU system controller corresponding to the block 5_1.

[0073] The positive electrode of the block 1 is connected with a DC 24V power supply, and the negative electrode is controlled by the fire train line.

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

[0075] The block 5_2 uses high-level collection effective, and the fire signal is transferred through the intermediate relay K_C. The negative electrode of the intermediate relay K_C is controlled by the fire train line, and the positive electrode is isolated from the power supply circuit of DC 24V through a diode (unidirectional conduction module).

[0076] It should be further explained that when the fire controller 3 monitors that the internal conditions are met or the TCU of the intermediate car (B car or C car) monitors that the temperature sensing cable is fused, the internal dry contact is closed, DC 0V is output to the fire train line, and then the load in the block 1 is normally powered, the blocks 2, 3, 4 and 5_1 can directly collect the 0V train line, the block 5_2 monitors the effective fire signal through the relay, and then performs the next effective action.

[0077] It should be further explained that when the corresponding control logic conditions are not met, the train line is controlled to be in an invalid state, that is, the fire controller 3 does not detect the fire situation, and the switch output module 4 is not closed. Due to the isolation effect of the diode, the voltage of the power supply of different voltage levels is avoided to be connected in series; the control boards of different voltage levels should be able to meet the input of the highest voltage.

[0078] The embodiment provides a fire alarm control system, the fire alarm control system comprises a fire state acquisition module 1, a fire alarm module 2, a fire controller 3 and an on-off output module 4 which are all arranged in the interior of a rail vehicle, wherein the fire state acquisition module 1 can acquire state information of each region in the interior of the rail vehicle, and when a fire occurs in any region, the fire controller 3 controls the on-off output module 4 to be closed, because one end of the on-off output module 4 is connected to a train line and the other end is connected to a negative electrode of a power supply, so when the on-off output module 4 is closed, the potential of the train line of the rail vehicle can be changed to 0V, and then the fire alarm module 2 is turned on, so that corresponding alarms can be sent through the fire alarm module 2, and the scheme can still reliably complete the fire alarm without arranging an additional intermediate relay K_C, greatly reduces the equipment installation space, reduces wiring and cable length, reduces fault points and reduces the complexity of circuit structure design.

[0079] On the basis of the above embodiment:

[0080] As an optional embodiment, the PIS system IO module and the display device are further included.

[0081] The display device is connected with the plurality of cameras, and is used for displaying the picture shot by the camera when any camera is turned on, and the display device and the cameras are arranged in the interior of the rail vehicle.

[0082] The PIS system IO module is connected with the train line and the cameras respectively, and is used for receiving the position information corresponding to the state information meeting the preset fire condition transmitted by the fire controller 3 through the network when any state information meeting the preset fire condition exists in the state information, and controlling the camera corresponding to the position information to shoot the picture at the position information.

[0083] In the application, the PIS system IO module and the display device are further arranged in the fire alarm control system, the PIS system IO module is connected with the train line, because the PIS system IO module is a low-level starting module, so when the fire controller 3 judges that a fire occurs in the interior of the rail vehicle according to the state signal acquired by the fire state acquisition module 1, the on-off output module 4 is controlled to be closed, at this time, the train line is zero potential, therefore the PIS system IO module is started after being connected with the zero potential, and after receiving the position information corresponding to the state information transmitted by the fire controller 3, the camera corresponding to the position information is controlled to shoot the picture at the position information, and the shot picture is displayed in the display device, because the display device is arranged in the interior of the rail vehicle, so the passengers and the driver in the interior of the rail vehicle can observe the specific situation of the fire region, and the passengers and the driver can evacuate or perform fire fighting in time, and the safety is improved.

[0084] As an optional embodiment, the PIS system IO module and the display device are further included.

[0085] The HVAC system IO module is connected with the train line and the air conditioning system inside the railway vehicle, and is used for controlling the air conditioning system inside the railway vehicle to be closed when any one of the state information meets the preset fire condition.

[0086] In the present application, the HVAC system IO module is further arranged in the fire alarm control system, and the HVAC system IO module is connected with the train line.

[0087] As an optional embodiment, the application further comprises a first unidirectional conduction module VDA and a first protection device.

[0088] The first end of the first protection device is connected with the first power supply, and the second end is connected with the input end of the first unidirectional conduction module VDA, and is used for being disconnected when overcurrent occurs in the loop.

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

[0090] In the present application, because the fire alarm module 2 is connected with the first power supply, in order to ensure that the current in the loop flows backward after the on-off output module 4 is closed, the first unidirectional conduction module VDA is arranged between the first power supply and the fire alarm module 2.

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

[0092] As an optional embodiment, the application further comprises:

[0093] The first OBCU system IO module is connected with the fire controller 3 and the train line, and is used for being turned on when the on-off output module 4 is closed, and transmitting the state information meeting the first uploading condition to the ground control center;

[0094] The second OBCU system IO module is connected with the moving contact of the intermediate relay K_C, and is used for transmitting the state information meeting the second uploading condition to the ground control center after the coil of the intermediate relay K_C is electrified, the number of the fire areas corresponding to the second uploading condition being greater than the number of the fire areas corresponding to the first uploading condition;

[0095] The intermediate relay K_C is connected with the second power supply at the first end of the coil, and is connected with the train line at the second end of the coil, and is connected with the second power supply at the static contact, and is used for closing the moving contact and the static contact when the coil is electrified.

[0096] In the application, the fire alarm control system is further provided with the first OBCU system IO module, the second OBCU system IO module and the intermediate relay K_C, wherein the first OBCU system IO module is connected with the train line, because the first OBCU system IO module is a low-level starting module, when the fire controller 3 judges that there is a fire in the rail vehicle according to the state signal collected by the fire state collection module 1, the on-off output module 4 is controlled to be closed, at this time, the train line is zero potential, therefore, the first OBCU system IO module is started after being connected with the zero potential, after the first OBCU system IO module is started, the information meeting the first uploading condition in the state information sent by the fire controller 3 is transmitted to the ground control center, so that the ground control center can carry out corresponding subsequent maintenance, in addition, because the second OBCU system IO module is a high-level starting module, the intermediate relay K_C needs to be additionally provided, the coil of the intermediate relay K_C is connected with the second power supply and the train line, when the on-off output module 4 is closed, the coil of the intermediate relay K_C is electrified, the corresponding moving contact and static contact are closed, the second OBCU system IO module is started, and the information meeting the second uploading condition in the state information sent by the fire controller 3 is transmitted to the ground control center, so that the ground control center can carry out corresponding subsequent maintenance, and the reliability of the scheme is improved.

[0097] As an optional embodiment, the application further comprises a second unidirectional conduction module VDC and a second protection device.

[0098] The first end of the second protection device is connected with the second power supply, and the second end is connected with the input end of the second unidirectional conduction module VDC and the static contact of the intermediate relay K_C, and is used for being disconnected when overcurrent occurs in the loop.

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

[0100] In the present application, because the coil of the intermediate relay K_C is connected with the second power supply, in order to ensure that the current in the loop flows backward after the switch output module 4 is closed, a second unidirectional conduction module VDC is arranged between the second power supply and the coil of the intermediate relay K_C. In addition, considering that the current input by the second power supply suddenly increases, the normal operation of the second OBCU system IO module is affected, so a second protection device is arranged between the second power supply and the second OBCU system IO module, which can be disconnected when 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 timely send information to the ground control center.

[0101] As an optional embodiment, the fire alarm control system further comprises:

[0102] The TCMS system IO module is connected with the train line and the HMI, and is used for transmitting state information meeting preset fire conditions to the HMI through the network, so that the HMI displays corresponding states.

[0103] In the present application, the TCMS system IO module is further arranged in the fire alarm control system, and the TCMS system IO module is connected with the train line. Because the TCMS system IO module is a low-level starting module, when the fire controller 3 controls the switch output module 4 to be closed according to the state signal collected by the fire state collection module 1, the train line is zero potential, so the TCMS system IO module is started after being connected with the zero potential. After the TCMS system IO module is started, the TCMS system IO module transmits state information meeting preset fire conditions to the HMI (Human Machine Interface), so that the HMI displays corresponding states in time.

[0104] As an optional embodiment, the fire alarm module 2 comprises a sound alarm module and / or a display alarm module.

[0105] The input end of the sound alarm module is connected with the first power supply, and the output end is connected with the train line of the railway vehicle, which is used for being started and emitting corresponding sound alarm when the switch output module 4 is closed.

[0106] and / or,

[0107] The input end of the display alarm module is connected with the first power supply, and the output end is connected with the train line of the railway vehicle, which is used for being started and emitting corresponding display alarm when the switch output module 4 is closed.

[0108] In the present application, the fire alarm module 2 can be provided with only a sound alarm module, only a display alarm module, or both a sound alarm module and a display alarm module, wherein the sound alarm module is used to issue corresponding sound alarms, the display alarm module is used to issue corresponding display alarms, and of course, the simultaneous provision of the sound alarm module and the display alarm module can simultaneously issue sound alarms and display alarms when a fire occurs, which is more convenient for users or drivers to receive fire warnings.

[0109] As an optional embodiment, the fire state acquisition module 1 comprises N smoke detectors and M smoke temperature detectors.

[0110] The N smoke detectors and the M smoke temperature detectors are connected in series on the communication bus 2 of the railway vehicle.

[0111] The N smoke detectors are arranged inside and outside the railway vehicle, respectively, and are used to collect smoke information inside or outside the railway vehicle.

[0112] The M smoke temperature detectors are arranged inside and outside the railway vehicle, respectively, and are used to collect smoke temperature information inside or outside the railway vehicle; the communication bus 2 is connected with the fire controller 3.

[0113] In the present application, the fire state acquisition module 1 comprises N smoke detectors and M smoke temperature detectors, which are arranged inside or outside the railway vehicle, respectively. If a fire occurs inside or outside the railway vehicle, the smoke detector will collect the smoke generation condition and generate a corresponding signal to send to the fire controller 3. Similarly, if a fire occurs inside or outside the railway vehicle, the smoke temperature detector will detect the temperature of the generated smoke and send a temperature signal to the fire controller 3, so that the fire controller 3 can timely control the on-off output module 4 to close.

[0114] As an optional embodiment, the fire state acquisition module 1 further comprises 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 railway vehicle, and is connected with the fire controller 3.

[0116] and / or,

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

[0118] In the present application, considering that the bogie area of the rail vehicle is provided with a plurality of important equipment, the present application further provides a first temperature sensing cable in the bogie area of the rail vehicle, and considering the importance of the auxiliary inverter or the traction inverter of the rail vehicle, the present application further provides a second temperature sensing cable in the auxiliary inverter or the traction inverter, so as to detect whether the bogie area, the auxiliary inverter or the traction inverter of the rail vehicle is in a fire condition 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 the 3-car metro vehicle is taken as an example: A car-B car-C car, as shown in the figure, wherein FAC (Fire Alarm Control host) represents a fire alarm host, FASC (Fire Alarm Sub Control) represents a fire alarm extension; MD represents a smoke temperature detector, SD represents a smoke detector, LHD represents a temperature sensing cable, and APS represents an auxiliary inverter. Figure 3 1. Six smoke detectors and four smoke temperature detectors are arranged in each passenger compartment, which are connected with the fire alarm system through two buses; 2. A temperature sensing cable is arranged in the bogie area of each car, which is connected with the IO of the fire alarm system; 3. A temperature sensing cable is arranged in the auxiliary inverter of the A car and the traction inverters of the B and C cars, which is connected with the IO (Input / Output) interface of the fire alarm system; 4. A fire alarm host is arranged in the A car, and a fire alarm extension is arranged in the B car and the C car; 5. The CAN (Controller Area Network) communication mode is adopted in the fire alarm system, and the MVB (Multifunction Vehicle Bus) communication is adopted between the fire alarm host and the TCMS.

[0120] It should be further noted that the control circuit of the fire alarm is as shown in the figure. Figure 4 When the fire alarm is triggered, any one of the following fire triggering conditions is met:

[0121] Fire triggering condition 1: the triggering condition of any one passenger compartment smoke probe is met;

[0122] Fire triggering condition 2: the temperature sensing cable of any one auxiliary inverter box or traction inverter is fused;

[0123] Fire triggering condition 3: the temperature sensing cable of any one bogie area is fused.

[0124] When the fire output train line is valid (the switch output module 4 is closed, and the train line is zero potential), the control function and the 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, controls the fire state train line;

[0126] 2. The buzzer alarm of the driver's desk, the fire indicating lamp is lit (voltage level is DC 24V), the negative pole of the controlled load;

[0127] 3. The IO acquisition of PIS is effective (voltage level is DC 72V), low-level DC 0V input is effective, the specific fire probe position is reported by the fire host, the passenger room camera is linked and the real-time display of the fire area is performed on the CCTV screen, so as to confirm the fire state by the personnel on the train;

[0128] 4. The IO acquisition of HVAC (voltage level is DC 72V), low-level DC 0V input is effective, the HVAC system directly turns off the air conditioning system of the positive train according to the signal;

[0129] 5. The IO acquisition of TCMS (voltage level is DC 72V), low-level DC 0V input is effective, TCMS reports the fire fault prompt on the HMI according to the signal and the fire fault report information;

[0130] 6. The IO board card acquisition of OBCU signal system (voltage level is DC 110V), the voltage is DC 110V, high-level DC 110V input is effective, and the acquisition is performed through a relay.

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

[0132] When the fire probe of a certain section of the train acts, the probe transmits the smoke state to the fire alarm host through the bus transmission mode, and the fire alarm host performs the following actions:

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

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

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

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

[0137] 1. There is an audible and visual alarm signal of the fire on the driver's desk.

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

[0139] 3. The HVAC system directly turns off the air conditioning system according to the effective state of the fire;

[0140] 4. The TCMS system displays the specific fire probe fire alarm signal on the HMI (Human Machine Interface);

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

[0142] Scenario 2: When the fire trigger condition 2 is met, all the above actions can be realized except the video linkage of the PIS system, and 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 the fire trigger condition 3 is met, all the above actions can be realized except the video linkage of the PIS system, and at the same time the traction inverter or auxiliary inverter of the section car will cut off the output to reduce the impact of high temperature or fire.

[0144] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying that there is any such relationship or order between these entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0145] The above description of disclosed embodiments allows a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform 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 fire alarm module has a first end connected to a first power source, and a second end connected to a train line of the rail vehicle, and is configured to be turned on when the switch output module is closed and to issue a corresponding alarm; The fire status acquisition module is used to collect status information corresponding to several 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 one of the status information meets the preset fire condition; 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 module and display device; The display device is connected to a plurality of cameras and is used to display the image captured by any camera after any camera is turned on. The display device and each camera 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 receive the position information corresponding to the status information that meets the preset fire conditions transmitted by the fire controller through the network when any one of the status information meets the preset fire conditions, 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 is connected to the train line and the air-conditioning system inside the rail vehicle, respectively, and is used to control the air-conditioning system inside the rail vehicle to shut down when any one of the status information meets the preset fire condition.

4. The fire alarm control system according to claim 1, wherein: 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 configured to disconnect when an overcurrent condition occurs in the circuit; The output end of the first one-way conduction module is connected to the first end of the fire alarm module.

5. The fire alarm control system according to claim 1, wherein: Also includes: a first OBCU system IO module, the first OBCU system IO module being connected to the fire controller and the train line, respectively, and configured to be turned on when the switch output module is closed, and to transmit status information that meets a first upload condition among the status information to a 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 configured to transmit, after the coil of the intermediate relay is energized, status information among the status information that satisfies a second upload condition 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 connected to the input end of the second unidirectional conduction module and the static contact of the intermediate relay respectively, and is used to disconnect 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, wherein: Also includes: 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.

8. The fire alarm control system according to claim 1, wherein: The fire alarm module includes: 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 turn on 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. It 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 and 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, for collecting smoke information inside the rail vehicle or outside the rail vehicle; The 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.

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 the auxiliary inverter or the traction inverter of the rail vehicle, and the second temperature-sensing cable is connected to the fire controller.

Images