Fire alarm circuit and method, railway vehicle and storage medium

Abstract

The embodiment of the invention discloses a fire alarm circuit and method, a rail vehicle and a storage medium. The fire alarm circuit comprises a train bus, a plurality of alarm control units, a plurality of compartment control circuits and a control management unit. Wherein each compartment corresponds to one alarm control unit and one compartment control circuit; the output port of each alarm control unit is electrically connected with the train bus and the carriage control circuit corresponding to the same carriage with the alarm control unit; the alarm control unit is configured to generate a hard wire signal based on an acquisition signal of the fire probe; the compartment control circuit is configured to control a controlled object of the same compartment based on the hard wire signal; and the control management unit is electrically connected with the train bus and is configured to execute corresponding alarm operation based on the hard wire signal. Through the circuit, the railway vehicle can execute corresponding alarm operation, and meanwhile, the controlled object of each carriage can be controlled.

Description

Technical Field

[0001] The present disclosure relates to the field of rail transit, including urban rail transit and metropolitan rail transit, and in particular to a fire alarm circuit and method, a rail vehicle, and a storage medium. Background Art

[0002] The fire alarm solution is an early warning and alarm protection solution, which aims to monitor the smoke, temperature and other environmental conditions of the scene or space that needs to be protected, and ensure that the alarm information can be fed back to the relevant supervisory personnel when a fire occurs. For manned rail vehicles with relatively simple functional requirements, the cabs at both ends of the rail vehicle are equipped with alarm control units, which can be configured with data output ports and / or IO (Input Output) output ports, and can uniformly output the acquired signals of the fire probes to the control management unit for management.

[0003] As the domestic rail transit field gradually evolves from manned to unmanned, the requirements for functional integrity of rail vehicle operations are getting higher and higher. Correspondingly, the requirements for the integrity of the fire alarm function of rail vehicles are also getting higher and higher. Among them, how to adapt the fire alarm function to more vehicle linkage requirements is an issue that needs to be considered. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure are intended to provide a fire alarm circuit and method, a rail vehicle, and a storage medium, so that the rail vehicle can perform corresponding alarm operations and control the controlled objects in each car at the same time.

[0005] In a first aspect, an embodiment of the present disclosure provides a fire alarm circuit, the circuit comprising: a train bus, a plurality of alarm control units, a plurality of carriage control circuits and a control management unit;

[0006] Wherein, each carriage corresponds to one of the alarm control units and one of the carriage control circuits; and the output port of each of the alarm control units is electrically connected to the train bus and the carriage control circuit of the same carriage as the alarm control unit;

[0007] The alarm control unit is configured to generate a hard-wire signal based on the collected signal of the fire probe;

[0008] The carriage control circuit is configured to control a controlled object of the same carriage based on the hard-wire signal;

[0009] The control management unit is electrically connected to the train bus and is configured to perform corresponding alarm operations based on the hard-wire signal.

[0010] In some embodiments, the circuit is provided with a first unidirectional conductive member for each of the carriages;

[0011] The first unidirectional conductive member is connected to the connection path between the output port and the carriage control circuit of the same carriage, and is configured to allow the hard-wire signal to be transmitted from the output port to the carriage control circuit.

[0012] In some embodiments, the circuit is provided with a second unidirectional conductive member for each of the carriages;

[0013] The second unidirectional conductive member is connected to the connection path between the output port and the train bus, and is configured to allow the hard-wire signal to be transmitted from the output port to the train bus.

[0014] In some embodiments, the first unidirectional conductive member is connected to the output port and a first connecting line of the carriage control circuit;

[0015] The second unidirectional conductive member is connected to the output port and a second connecting line of the train bus, and the first connecting line and the second connecting line are two branch lines electrically connected to the same output port.

[0016] In some embodiments, the first unidirectional conductive member is connected to a third connection line between the conductive node of the train bus and the carriage control circuit;

[0017] The second unidirectional conductive member is connected to a fourth connecting line between the output port and the conductive node, and the third connecting line and the fourth connecting line are two branch lines electrically connected to the same conductive node.

[0018] In some embodiments, the same output ports in different alarm control units are connected to the same train bus.

[0019] In some embodiments, the circuit is provided with a relay;

[0020] The relay is connected to the connection path between the train bus and the control management unit, and is configured to connect the connection path between the train bus and the control management unit when the hard-wire signal is at a high level; and to disconnect the connection path between the train bus and the control management unit when the hard-wire signal is at a low level.

[0021] In some embodiments, the circuit is provided with a third unidirectional conductive member;

[0022] The third unidirectional conductor, connected to the connection path between the train bus and the relay, is configured to allow the hard-wire signal to be transmitted from the train bus to the relay.

[0023] In some embodiments, each of the alarm control units has multiple output ports, and at least some of the multiple output ports are connected to the train bus and the car control circuit of the same car.

[0024] In some embodiments, the plurality of output ports include an internal fire output port, an external fire output port, and a fire fault output port;

[0025] The train bus includes an internal fire train line, an external fire train line and a fire fault train line;

[0026] The internal fire output port is electrically connected to the internal fire train line and the carriage control circuit;

[0027] The external fire output port is electrically connected to the external fire train line and the carriage control circuit;

[0028] The fire fault output port is electrically connected to the fire fault train line.

[0029] In some embodiments, the controlled objects include the cabin air conditioner and / or the cabin door.

[0030] In a second aspect, an embodiment of the present disclosure provides a rail vehicle, wherein the rail vehicle comprises the fire alarm circuit described in the first aspect.

[0031] In a third aspect, an embodiment of the present disclosure provides a fire alarm method, which is applied to a rail vehicle, and the method includes:

[0032] Obtain the acquisition signal of the fire probe;

[0033] Generate a hard-wire signal corresponding to the collected signal through the alarm control unit of the same carriage corresponding to the fire probe, and send it to the control management unit and the carriage control circuit of the same carriage;

[0034] The controlled object in the same carriage is controlled by the carriage control circuit.

[0035] In a fourth aspect, an embodiment of the present disclosure provides a rail vehicle, the rail vehicle comprising:

[0036] An acquisition module is configured to acquire a collection signal from a fire probe;

[0037] A sending module is configured to generate a hard-wire signal corresponding to the collected signal through an alarm control unit in the same carriage corresponding to the fire probe, and send the hard-wire signal to a control management unit and a carriage control circuit in the same carriage;

[0038] The control module is configured to control the controlled object in the same carriage through the carriage control circuit.

[0039] In a fifth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements the method described in the third aspect when executed by a processor.

[0040] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0041] In the embodiments of the present disclosure, each car of the rail vehicle corresponds to an alarm control unit and a car control circuit, the output port of each alarm control unit is electrically connected to the train bus and the car control circuit of the same car as the alarm control unit, and the control management unit is electrically connected to the train bus. Through this circuit, the control management unit can perform the corresponding alarm operation based on the hard-wired signal, while the car control circuit of each car can also obtain the above hard-wired signal, and control the controlled object of the same car based on the above hard-wired signal. For example, when the output port of the alarm control unit of a car outputs a hard-wired signal indicating the presence of a fire, the car control circuit of the same car corresponding to the alarm control unit can close the passage door of the corresponding car based on the above hard-wired signal; at the same time, the control management unit can control the rail vehicle to stop immediately based on the above hard-wired signal.

[0042] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used to explain the technical solutions of the present disclosure together with the specification.

[0044] Figure 1 A schematic diagram of the structure of each compartment in a fire alarm circuit provided in an embodiment of the present disclosure Figure 1 ;

[0045] Figure 2 A structural diagram of a fire alarm circuit in the related art;

[0046] Figure 3 A schematic diagram of a fire alarm circuit provided in an embodiment of the present disclosure Figure 2 ;

[0047] Figure 4 A schematic diagram of a fire alarm circuit provided in an embodiment of the present disclosure Figure 3 ;

[0048] Figure 5 A schematic diagram of a fire alarm circuit provided in an embodiment of the present disclosure Figure 4 ;

[0049] Figure 6 A schematic diagram of a fire alarm circuit provided in an embodiment of the present disclosure Figure 5 ;

[0050] Figure 7 A schematic diagram of a fire alarm circuit provided in an embodiment of the present disclosure Figure 6 ;

[0051] Figure 8 A schematic diagram of a fire alarm method according to an embodiment of the present disclosure;

[0052] Fig. 9 A schematic diagram of a rail vehicle provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions of the present disclosure are further elaborated in detail below in conjunction with the drawings and embodiments. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0054] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0055] The terms "first / second / third" involved in the present disclosure are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first / second / third" can be interchanged with the specific order or sequence where permitted, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing the present disclosure and are not intended to limit the present disclosure.

[0057] Figure 1 A schematic diagram of the structure of each compartment in a fire alarm circuit 100 provided in an embodiment of the present disclosure Figure 1 ,like Figure 1 As shown, the fire alarm circuit 100 includes: a train bus 101, a plurality of alarm control units 102, a plurality of carriage control circuits 103 and a control management unit 104;

[0058] Each carriage corresponds to an alarm control unit 102 and a carriage control circuit 103; and the output port of each alarm control unit 102 is electrically connected to the train bus 101 and the carriage control circuit 103 of the same carriage as the alarm control unit 102;

[0059] The alarm control unit 102 is configured to generate a hard-wire signal based on the collected signal of the fire probe;

[0060] The carriage control circuit 103 is configured to control a controlled object in the same carriage based on the hard-wire signal;

[0061] The control management unit 104 is electrically connected to the train bus 101 and is configured to perform a corresponding alarm operation based on the hard-wire signal.

[0062] In the embodiments of the present disclosure, the fire alarm circuit may be applied to a rail vehicle, wherein the rail vehicle may be a subway, a light rail, a monorail, a modern tram, etc., or may be other vehicles including a fire alarm circuit.

[0063] In the disclosed embodiment, each rail vehicle has a plurality of carriages, wherein the carriages include a cab at the front of the vehicle, a cab at the rear of the vehicle, and a carriage between the front of the vehicle and the rear of the vehicle.

[0064] Taking into account the increasingly complex requirements for fire alarm functions, in the embodiment of the present disclosure, the fire alarm circuit includes multiple alarm control units and multiple car control circuits, and each car corresponds to an alarm control unit and a car control circuit.

[0065] The on-board fire alarm scheme in the field of rail transit originates from the relevant fire warning scheme in the field of construction. However, the field of construction mostly uses hard-wired cables to transmit signals, and the vehicle load is large. Considering that the field of rail transit has relatively stringent requirements for vehicle load, in the embodiment disclosed herein, the train bus can correspond to a train bus cable, and the output port of each alarm control unit is connected to the train bus through a hard-wired cable, and the output port of each alarm control unit is connected to the car control circuit corresponding to the same car through a hard-wired cable, and the control management unit and the train bus can be connected through a hard-wired cable. In this way, the fire alarm circuit transmits signals in the form of a combination of train bus cables and hard-wired cables, which can not only increase the amount of information transmitted, but also reduce the use of hard-wired cables, thereby reducing the vehicle load. Among them, the train bus includes a train-level bus (Wire Train Bus, WTB), a multi-function vehicle bus (Multifunction Vehicle Bus, MVB), etc.

[0066] It should be noted that each alarm control unit may have multiple output ports. When the alarm control unit may include multiple output ports, since the multiple output ports output different hard-wired signals, the corresponding train buses are also multiple, that is, different output ports in each alarm control unit are connected to different train buses.

[0067] In the disclosed embodiment, the fire probes in each carriage can be classified into different types, including fire smoke probes, fire temperature probes, etc.; they can also be classified according to the installation location, which may include fire probes inside the carriage, fire probes outside the carriage, etc.

[0068] In the disclosed embodiment, each alarm control unit generates a hard-wire signal based on the collected signal of the fire probe corresponding to the same compartment. The hard-wire signal is used to indicate whether the fire probe of the corresponding compartment is faulty, whether the corresponding alarm control unit is faulty, and whether there is a fire in the corresponding compartment. Exemplarily, the fire probe outside the compartment is a fire smoke probe. After the alarm control unit obtains the smoke concentration value in the air collected by the fire smoke probe, the alarm control unit can generate a hard-wire signal indicating that there is a fire outside the corresponding compartment when the collected smoke concentration value is greater than the preset fire alarm concentration threshold.

[0069] In the disclosed embodiment, the compartment control circuit controls the controlled objects in the same compartment based on the hard-wired signal. The controlled objects in each compartment may include the compartment air conditioner and / or compartment door, and may also include automatic fire extinguishing devices, such as water spray fire extinguishing devices, dry powder fire extinguishing devices, etc. Among them, the compartment air conditioner may be an air conditioner or an air conditioning unit; the compartment doors include: cab door, passenger compartment door and passage door, etc.

[0070] It should be noted that, taking the controlled objects including the cabin air conditioner and / or the cabin door as an example, the cabin control circuit can control all controlled objects in the same cabin at the same time based on the acquired hard-wired signal. For example, when the cabin control circuit acquires a hard-wired signal indicating that there is a fire inside the cabin, the cabin control circuit can stop the air conditioning unit of the corresponding cabin and control the passage door to close to isolate the cabin and prevent the spread of the fire. In this way, the cabin control circuit can control the cabin air conditioner and the cabin door at the same time, which is suitable for the scenario where the cabin air conditioner and the cabin door are linked, that is, suitable for the linkage scenario of multiple controlled objects.

[0071] Similarly, the cabin control circuit can also control some of the controlled objects in the same cabin based on the acquired hard-wired signal. For example, when the cabin control circuit acquires a hard-wired signal indicating that there is a fire outside the cabin, the cabin control circuit can turn off the fresh air function of the cabin air conditioner and turn on the return air function. In this way, the cabin control circuit can control a controlled object independently, which is suitable for controlling multiple controlled objects.

[0072] It should be noted that when there are multiple output ports of the alarm control unit, the corresponding multiple output ports output different hard-wired signals. If the car control circuit obtains multiple hard-wired signals at the same time, the controlled objects in the same car can be controlled based on the priority of the multiple hard-wired signals. Taking the controlled objects including the car air conditioner and / or the car door as an example, when the car control circuit simultaneously obtains the hard-wired signal indicating the existence of a fire inside the car and the hard-wired signal indicating the existence of a fire outside the car, since the priority of the hard-wired signal indicating the existence of a fire inside the car is higher than the priority of the hard-wired signal indicating the existence of a fire outside the car, the car control circuit stops the air conditioning unit of the corresponding car based on the hard-wired signal indicating the existence of a fire inside the car, and also controls the passage door to close.

[0073] In the disclosed embodiment, the control management unit is configured to perform corresponding alarm operations based on the hard-wired signal. Exemplarily, if the hard-wired signal indicates that there is a fire inside or outside the carriage, the control management unit may control the rail vehicle to stop immediately or continue to travel to the next station before stopping; if the hard-wired signal indicates that the fire probe or alarm control unit is faulty, the control management unit may remind the driver or maintenance personnel through sound and light alarms, etc., so that the driver or maintenance personnel can check whether the fire probe and / or alarm control unit is faulty. Among them, the control management unit may include signal systems such as the Train Control and Management System (TCMS), the Vehicle on Board Controller (VOBC), and the fire broadcast system.

[0074] In the embodiment of the present disclosure, the hard-wire signal can be represented by a high level or a low level. When the hard-wire signal is at a high level, the control management unit can perform a corresponding alarm operation based on the high-level hard-wire signal; when the hard-wire signal is at a low level, the control management unit can not perform an alarm operation based on the low-level hard-wire signal.

[0075] In the embodiment of the present disclosure, the hard-wired signal outputted by the output port of each alarm control unit may also include at least the identity of the fire probe, the address information of the fire probe, the identity of the alarm control unit, the address information of the alarm control unit, etc. Exemplarily, the control management unit may locate the carriage corresponding to the data signal based on the acquired identity of the alarm control unit; the control management unit may locate the fire probe corresponding to the data signal based on the acquired identity of the fire probe.

[0076] Figure 2 FIG. 2 is a schematic diagram of a fire alarm circuit 200 of the related art. Figure 2 As shown, in the related art, the front and rear ends of the rail vehicle are equipped with fire alarm units 202, and each car of the rail vehicle is equipped with an air conditioning control panel 203, and each air conditioning control panel 203 can be used to control the controlled object of its corresponding car. Among them, the output port of the fire alarm unit 202 is electrically connected to the bus 201, and the air conditioning control panel 203 is electrically connected to the bus 201. If there is a fire in only one car, since the hard-wired signal output by the fire alarm unit 202 is sent to the air conditioning control panels 203 of all cars at the same time, the air conditioning of all cars will be controlled at the same time, and the air conditioning of only the car where the fire occurs cannot be controlled.

[0077] In this regard, in the disclosed embodiment, each car of the rail vehicle corresponds to an alarm control unit and a car control circuit, the output port of each alarm control unit is electrically connected to the train bus and the car control circuit of the same car as the alarm control unit, and the control management unit is electrically connected to the train bus. Through this circuit, the control management unit can perform the corresponding alarm operation based on the hard-wired signal, while the car control circuit of each car can also obtain the above-mentioned hard-wired signal, and control the controlled object of the same car based on the above-mentioned hard-wired signal. For example, when the output port of the alarm control unit of a car outputs a hard-wired signal indicating the existence of a fire, the control management unit can control the rail vehicle to stop immediately based on the above-mentioned hard-wired signal; at the same time, the car control circuit of the same car corresponding to the alarm control unit can close the passage door of the corresponding car based on the above-mentioned hard-wired signal.

[0078] In some embodiments, Figure 3 As shown, the circuit is provided with a first unidirectional conducting member 105 for each of the carriages;

[0079] The first unidirectional conductive member 105 is connected to the connection path between the output port of the same carriage and the carriage control circuit 103 , and is configured to allow the hard-wire signal to be transmitted from the output port to the carriage control circuit 103 .

[0080] In the disclosed embodiment, the circuit is provided with a first one-way conductive member for each car, and the first one-way conductive member is connected to the connection path between the output port of the same car and the car control circuit, and is configured to allow hard-wired signals to be transmitted from the output port to the car control circuit. It is understandable that the first one-way conductive member does not allow signals to be transmitted from the car control circuit to the output port. Among them, the first one-way conductive member can be a diode, and when a forward voltage is applied between the diodes, the diode is turned on, and when a reverse voltage is applied between the diodes, the diode is turned off. Taking the first one-way conductive member as a diode as an example, the positive pole of the diode is connected to the output port, and the negative pole of the diode is connected to the car control circuit.

[0081] In the embodiment of the present disclosure, a first unidirectional conducting member is provided on the connection path between the output port of the same compartment and the compartment control circuit, allowing hard-wired signals to be transmitted from the output port to the compartment control circuit. The present disclosure can reduce the occurrence of a situation where a signal flows back from the compartment control circuit to the output port, thereby reducing the occurrence of chaotic output of the output port, thereby reducing the occurrence of inaccurate alarms of the fire alarm circuit.

[0082] In some embodiments, Figure 4 As shown, the circuit is provided with a second one-way conducting member 106 for each of the carriages;

[0083] The second unidirectional conductive member 106 is connected to the connection path between the output port and the train bus 101 , and is configured to allow the hard-wire signal to be transmitted from the output port to the train bus 101 .

[0084] In the disclosed embodiment, the circuit is provided with a second one-way conductive member for each car, and the second one-way conductive member is connected to the connection path between the output port and the train bus, and is configured to allow hard-wired signals to be transmitted from the output port to the train bus. It is understandable that the second one-way conductive member does not allow the signal of the control management unit to be transmitted from the train bus to the output port; and since the hard-wired ports of other cars are also connected to the train bus, the signals of other cars are not allowed to be transmitted to the output port. Among them, the second one-way conductive member can be a diode, and when a forward voltage is applied between the diodes, the diode is turned on, and when a reverse voltage is applied between the diodes, the diode is cut off. Taking the second one-way conductive member as a diode as an example, the positive pole of the diode is connected to the output port, and the negative pole of the diode is connected to the car control circuit.

[0085] In the embodiment of the present disclosure, a second unidirectional conductive member is provided on the connection path between the output port of the same compartment and the train bus, allowing hard-wired signals to be transmitted from the output port to the train bus. The present disclosure can reduce the occurrence of signal backflow to the output port, thereby reducing the occurrence of chaotic output of the output port, thereby reducing the occurrence of inaccurate alarms of the fire alarm circuit 100.

[0086] In some embodiments, Figure 3 As shown, the first unidirectional conductive member 105 is connected to the output port and the first connecting line of the carriage control circuit 103;

[0087] The second unidirectional conductive member 106 is connected to the output port and a second connection line of the train bus 101 , and the first connection line and the second connection line are two branch lines electrically connected to the same output port.

[0088] That is to say, in the embodiment of the present disclosure, two different branch lines are branched out from each output port, the first connection line in the two different branch lines is connected to the train bus, and the second connection line in the two different branch lines is connected to the car control circuit of the same car.

[0089] In the disclosed embodiment, the circuit is provided with a first one-way conducting member and a second one-way conducting member for each carriage; wherein the first one-way conducting member is connected to the first connecting line between the output port and the carriage control circuit; the second one-way conducting member is connected to the second connecting line between the output port and the train bus, and the first connecting line and the second connecting line are two branch lines electrically connected to the same output port. The hard-wired signal outputted from the output port can be sent to the carriage control circuit through the first connecting line, and can be sent to the train bus through the second connecting line; the signal on the train bus is then transmitted to the control management unit.

[0090] like Figure 3 As shown, the first unidirectional conductive component 105 arranged on the connecting line between the output port and the car control circuit 103 is a diode 1, the positive electrode of the diode 1 is connected to the output port, and the negative electrode of the diode 1 is connected to the car control circuit 103; the second unidirectional conductive component 106 arranged on the connecting line between the output port and the train bus 101 is a diode 2, the positive electrode of the diode 2 is connected to the output port, and the negative electrode of the diode 2 is connected to the train bus 101; the connecting line between the output port and the car control circuit 103 and the connecting line between the output port and the train bus 101 are two branch lines electrically connected to the same output port.

[0091] In the embodiment of the present disclosure, since the first connection line and the second connection line are two different branch lines electrically connected to the same output port, the car control circuit 103 of each car only receives the hard-wire signal of the alarm control unit 102 corresponding to the same car, so that each car control circuit 103 can independently control the controlled object of the same car. It can be seen that the fire alarm circuit 100 in the embodiment of the present disclosure can control the controlled object of a single car.

[0092] In some embodiments, Figure 4 As shown, the first unidirectional conductive member 105 is connected to a third connection line between the conductive node of the train bus 101 and the carriage control circuit 103;

[0093] The second unidirectional conductive member 106 is connected to a fourth connection line between the output port and the conductive node, and the third connection line and the fourth connection line are two branch lines electrically connected to the same conductive node.

[0094] That is to say, in the embodiment of the present disclosure, the connecting line between the alarm control unit and the car control circuit is connected to the conductive node of the train bus, and the connecting line between the alarm control unit and the car control circuit is divided into two branch lines through the conductive node of the above-mentioned train bus. The fourth connecting line in the two branch lines is the connecting line between the output port and the conductive node of the train bus, and the third connecting line in the two branch lines is the connecting line between the conductive node of the above-mentioned same train bus and the car control circuit.

[0095] In the disclosed embodiment, the circuit is provided with a first one-way conductive member and a second one-way conductive member for each carriage; wherein the first one-way conductive member is connected to the third connection line between the conductive node of the train bus and the carriage control circuit; the second one-way conductive member is connected to the fourth connection line between the output port and the conductive node, and the third connection line and the fourth connection line are two branch lines electrically connected to the same conductive node. The hard-wired signal output by the output port can be sent to the train bus through the third connection line, and the signal on the train bus is then sent to the carriage control circuit through the fourth connection line, and can also be sent to the control management unit.

[0096] like Figure 4As shown, the first unidirectional conductive component 105 arranged on the connecting line between the conductive node of the train bus 101 and the car control circuit 103 is a diode 3, the positive electrode of the diode 3 is connected to the conductive node, and the negative electrode of the diode 3 is connected to the car control circuit 103; the second unidirectional conductive component 106 arranged on the connecting line between the output port and the conductive node of the train bus 101 is a diode 4, the positive electrode of the diode 4 is connected to the output port, and the negative electrode of the diode 4 is connected to the conductive node; the connecting line between the conductive node of the train bus 101 and the car control circuit 103 and the connecting line between the output port and the conductive node of the train bus 101 are two branch lines electrically connected to the same conductive node.

[0097] In the disclosed embodiment, the circuit is provided with a first one-way conductive member on the conductive node of the train bus and the third connecting line of the carriage control circuit, and a second one-way conductive member is provided on the fourth connecting line between the output port and the conductive node, and the third connecting line and the fourth connecting line are two branch lines electrically connected to the same conductive node. It can be seen that the connection method between the alarm control unit and the train bus and the carriage control circuit in the disclosed embodiment is flexible.

[0098] In some embodiments, Figure 5 , Figure 6 As shown, the same output ports in different alarm control units 102 are connected to the same train bus 101 .

[0099] In the disclosed embodiment, the third connection line connected between the conductive node of the train bus and the carriage control circuit, and the fourth connection line connected between the output port and the conductive node are two branch lines electrically connected to the same conductive node.

[0100] Considering that each alarm control unit includes multiple output ports, the train bus includes multiple train buses. If the same output ports in different alarm control units are connected to different train buses, the car control circuits of different cars are also connected to different train buses. Exemplarily, a certain output port in the alarm control unit of a car (such as the cab of the front of the car) outputs a hard-wired signal to the train bus A, and the car control circuit of the car is also connected to the train bus A. However, the car control circuit of another car (such as the first car) is connected to the train bus B. Therefore, the hard-wired signal of the alarm control unit of the cab of the front of the car cannot be sent to the car control circuit of the first car at the same time, that is, the fire alarm circuit cannot centrally control the controlled objects of all cars.

[0101] In this regard, in the disclosed embodiment, the same output ports in different alarm control units are connected to the same train bus. Since the third connecting line and the fourth connecting line are two branch lines electrically connected to the same conductive node, the car control circuits of different cars are also connected to the same train bus, so that the hard-wired signal of the alarm control unit of any car can be sent to the car control circuits of all cars at the same time, that is, the fire alarm circuit can centrally control the controlled objects of all cars.

[0102] In some embodiments, Figure 5 , Figure 6 , Figure 7 As shown, the circuit is provided with a relay 108;

[0103] The relay 108 is connected to the connection path between the train bus 101 and the control management unit 104, and is configured to connect the connection path between the train bus 101 and the control management unit 104 when the hard-wire signal is at a high level; and disconnect the connection path between the train bus 101 and the control management unit 104 when the hard-wire signal is at a low level.

[0104] In the scenario of alarm control unit failure, the alarm control unit outputs a hard-wire signal indicating the alarm control unit failure. In order to prevent the control management unit from obtaining the signal, in the related art, it is effective to use a low level to indicate the hard-wire signal. In the scenario of fire, the car control circuit obtains a low-level hard-wire signal indicating the existence of a fire, but usually when there is no signal input, the car control circuit also obtains a low level. At this time, the car control circuit cannot accurately determine whether it has not obtained a signal or obtained a low-level hard-wire signal indicating the existence of a fire, so it is impossible to accurately control the controlled object in the same car. Moreover, as long as the alarm control unit of one car outputs a high level, even if the alarm control units of other cars output a low level, although there is a fire at this time, the signal on the corresponding train bus is a high level, and the control management unit obtains a high-level signal. The control management unit will think that there is no fire at this time, which is inconsistent with the actual scenario.

[0105] Therefore, in the embodiment of the present disclosure, when the hard-wire signal is at a low level, it indicates that the fire detector is normal and the alarm control unit is normal and there is no fire; when the hard-wire signal is at a high level, it indicates at least one of a fire detector failure, an alarm control unit failure, and the presence of a fire. It can be understood that when there is a fire in any car or any alarm control unit fails, the train bus transmits a high level, and the car control circuit can control the controlled object of the same car based on the high-level signal, and the control management unit can perform a corresponding alarm operation based on the high-level signal.

[0106] In the embodiment of the present disclosure, the fire alarm circuit may be provided with a relay connected to the connection path between the train bus and the control management unit. When the relay is turned on, the connection path between the train bus and the control management unit is turned on; when the relay is turned off, the connection path between the train bus and the control management unit is turned off.

[0107] If the relay is a normally closed contact relay, for example, when the hard-wire signal transmitted on the train bus is a high level indicating the presence of a fire, the relay is powered off, and the control management unit will not be able to obtain the hard-wire signal, let alone perform the corresponding alarm operation based on the hard-wire signal. Therefore, in the embodiment of the present disclosure, the relay is a normally open contact relay.

[0108] In the disclosed embodiment, the relay connected to the connection path between the train bus and the control management unit is configured to conduct the connection path between the train bus and the control management unit when the hard-wire signal is at a high level, and the control management unit can perform a corresponding alarm operation; when the hard-wire signal is at a low level, the connection path between the train bus and the control management unit is disconnected, and the control management unit cannot perform a corresponding alarm operation. It can be seen that when the alarm control unit of any car outputs a high level, the relay is turned on, so that the control management unit can obtain the train bus signal corresponding to the hard-wire signal, and can perform a corresponding alarm operation based on the obtained signal.

[0109] In some embodiments, Figure 6 , Figure 7 As shown, the circuit is provided with a third unidirectional conducting member 107;

[0110] The third unidirectional conductor 107 is connected to the connection path between the train bus 101 and the relay 108 , and is configured to allow the hard-wire signal to be transmitted from the train bus 101 to the relay 108 .

[0111] In the embodiment of the present disclosure, the circuit is provided with a third one-way conductive member. The third one-way conductive member is connected to the connection path between the train bus and the relay, and is configured to allow hard-wired signals to be transmitted from the train bus to the relay. It is understandable that the third one-way conductive member does not allow signals to be transmitted from the control management unit to the train bus. The third one-way conductive member may be a diode, and correspondingly, the positive electrode of the diode is connected to the train bus, and the negative electrode of the diode is connected to the relay. In the embodiment of the present disclosure, the circuit is provided with a third one-way conductive member on the connection path between the train bus and the relay, allowing hard-wired signals to be transmitted from the train bus to the relay. Since the train bus is also connected to the output port and may also be connected to the car control circuit, if the signal is transmitted from the train bus to the output port or the car control circuit, it may affect the signal value obtained by the output port or the car control circuit. The present disclosure can reduce the occurrence of signal backflow to the train bus, so that the occurrence of signal confusion on the train bus can be reduced, that is, the occurrence of signal confusion at the output port or the car control circuit can be reduced, thereby reducing the occurrence of inaccurate alarms of the fire alarm circuit.

[0112] In some embodiments, Figure 5 , Figure 6 , Figure 7 As shown, each of the alarm control units 102 has multiple output ports, and at least some of the multiple output ports are connected to the train bus 101 and the car control circuit 103 of the same car.

[0113] In the disclosed embodiment, at least some of the multiple output ports are connected to the train bus and the car control circuit of the same car, including: some of the multiple output ports are connected to the train bus and the car control circuit of the same car; another part of the multiple output ports is only connected to the train bus or serves as a spare port. Among them, the multiple output ports may include an internal fire output port, an external fire output port, a fire fault output port, a spare output port, etc.; correspondingly, the multi-channel hard-wired signals output by each output port may include a car internal hard-wired signal indicating that there is a fire inside the car, a car external hard-wired signal indicating that there is a fire outside the car, a fire fault signal indicating a fire probe fault, a spare hard-wired signal, etc. Exemplarily, the internal fire output port outputs a car internal hard-wired signal; the spare output port is used to adapt to subsequent increased needs.

[0114] Considering the increasingly complex requirements for fire alarm functions, the alarm control unit can support more and more output forms and types of hard-wired signals. In this regard, in the embodiment of the present disclosure, each alarm control unit has multiple output ports, and at least some of the multiple output ports are connected to the train bus and the car control circuit of the same car. It can be seen that there are many ways to connect the output port and the train bus, and the car control circuit of the same car. The present disclosure can be applied to the scenario where multiple output ports are connected to the train bus and the car control circuit of the same car.

[0115] In some embodiments, Figure 5 , Figure 6 As shown, the plurality of output ports include an internal fire output port a, an external fire output port b and a fire fault output port c;

[0116] The train bus 101 includes an internal fire train line 1011, an external fire train line 1012 and a fire fault train line 1023;

[0117] The internal fire output port a is electrically connected to the internal fire train line 1011 and the carriage control circuit 103;

[0118] The external fire output port b is electrically connected to the external fire train line 1012 and the carriage control circuit 103;

[0119] The fire fault output port c is electrically connected to the disaster fault train line 1013.

[0120] In the disclosed embodiment, the plurality of output ports include an internal fire output port, an external fire output port, and a fire fault output port. For example, when there is a mechanical fault, an electrical fault, or a fire in the compartment, the internal fire output port may output a high level; when there is a fire outside the compartment due to a natural disaster, malicious damage, etc., the external fire alarm output port may output a high level.

[0121] In the disclosed embodiment, the train bus includes an internal fire train line, an external fire train line and a fire fault train line; the internal fire output port is electrically connected to the internal fire train line and the carriage control circuit, the external fire output port is electrically connected to the external fire train line and the carriage control circuit, and the fire fault output port is electrically connected to the fire fault train line.

[0122] In the disclosed embodiment, different output ports are connected to corresponding train buses. Since different output ports output corresponding hard-wired signals, the data volume of the hard-wired signals transmitted on the train bus is small and clear. Based on the small and clear hard-wired signals, the efficiency and accuracy of the corresponding operations performed by the carriage control circuit and the control management unit can be improved.

[0123] In order to better understand one or more of the above embodiments, the embodiments of the present disclosure are exemplified as follows:

[0124] Figure 5 A schematic diagram of a fire alarm circuit 100 provided in an embodiment of the present disclosure Figure 4 ,like Figure 5 As shown, the fire alarm circuit 100 includes: multiple alarm control units 102, multiple car control circuits 103 and a control management unit 104. Each car of the train bus 101 corresponds to an alarm control unit 102 and a car control circuit 103; each alarm control unit 102 has four output ports, including: internal fire output port a, external fire output port b, fire fault output port c and spare output port d. In the embodiment of the present disclosure, the fire alarm circuit 100 includes: three train buses 101, namely, an internal fire train line 1011, an external fire train line 1012, and a fire fault train line 1013.

[0125] In the disclosed embodiment, for each carriage, a first one-way conducting member 105a is provided on the connection path between the internal fire output port a and the carriage control circuit 103, a first one-way conducting member 105a is provided on the connection path between the external fire output port b and the carriage control circuit 103, a second one-way conducting member 106b is provided on the connection path between the internal fire output port a and the internal fire train line 1011, a second one-way conducting member 106b is provided on the connection path between the external fire output port b and the external fire train line 1012, and a second one-way conducting member 106c is provided on the connection path between the fire fault output port c and the fire fault train line 1013. The connection line between each output port and the carriage control circuit 103 and the connection line between the above output port and the train bus 101 are two branch lines electrically connected to the same output port.

[0126] In the embodiment of the present disclosure, a relay 108 is provided on the connection path between the train bus 101 and the control management unit 104, and the relay 108 includes an internal fire relay 108a, an external fire relay 108b, and a fire fault relay 108c; the internal fire train line 1011 is connected to the internal fire relay 108a, the external fire train line 1012 is connected to the external fire relay 108b, and the fire fault train line 1013 is connected to the fire fault relay 108c.

[0127] In the embodiment of the present disclosure, the fire alarm circuit 100 may include a power supply unit to provide a stable input voltage to the alarm control units 102 of all carriages at the same time, or may include multiple power supply units to provide a stable input voltage to the alarm control units 102 of the corresponding carriages respectively, and the two input ports of the alarm control unit 102 of each carriage are connected to the power supply unit.

[0128] In the embodiment of the present disclosure, the connection line between the output port and the car control circuit 103 and the connection line between the output port and the train bus 101 are two different branch lines electrically connected to the same output port, so that the car control circuit 103 of each car only receives the hard-wire signal of the alarm control unit 102 corresponding to the same car, so that each car control circuit 103 can independently control the controlled object of the same car. It can be seen that the fire alarm circuit 100 in the embodiment of the present disclosure can control the controlled object of a single car.

[0129] Figure 6 A schematic diagram of a fire alarm circuit 100 provided in an embodiment of the present disclosure Figure 5 ,like Figure 6 As shown, the fire alarm circuit 100 includes: multiple alarm control units 102, multiple car control circuits 103 and a control management unit 104. Each car of the train bus 101 corresponds to an alarm control unit 102 and a car control circuit 103; each alarm control unit 102 has four output ports, including: internal fire output port a, external fire output port b, fire fault output port c and spare output port d. In the embodiment of the present disclosure, the fire alarm circuit 100 includes: three train buses 101, namely, an internal fire train line 1011, an external fire train line 1012, and a fire fault train line 1013.

[0130] In the disclosed embodiment, for each carriage, a first one-way conducting member 105a is provided on the connection path between the internal fire output port a and the carriage control circuit 103, a first one-way conducting member 105b is provided on the connection path between the external fire output port b and the carriage control circuit 103, a second one-way conducting member 106a is provided on the connection path between the internal fire output port a and the internal fire train line 1011, a second one-way conducting member 106b is provided on the connection path between the external fire output port b and the external fire train line 1012, and a second one-way conducting member 106c is provided on the connection path between the fire fault output port c and the fire fault train line 1013. The connection line between each output port and the corresponding train bus 101 and the connection line between the above train bus 101 and the carriage control circuit 103 are two branch lines electrically connecting the conductive nodes of the same train bus 101.

[0131] In the embodiment of the present disclosure, a relay 108 is arranged on the connection path between the train bus 101 and the control management unit 104, and the relay 108 includes an internal fire relay 108a, an external fire relay 108b, and a fire fault relay 108c; a third one-way conductor 107a is arranged on the connection channel between the conductive node of the internal fire train line 1011 and the internal fire relay 108a, a third one-way conductor 107b is arranged on the connection channel between the conductive node of the external fire train line 1012 and the external fire relay 108b, and a third one-way conductor 107c is arranged on the connection channel between the conductive node of the fire fault train line 1013 and the fire fault relay 108c.

[0132] In the embodiment of the present disclosure, the fire alarm circuit 100 may include a power supply unit to provide a stable input voltage to the alarm control units 102 of all carriages at the same time, or may include multiple power supply units to provide a stable input voltage to the alarm control units 102 of the corresponding carriages respectively, and the two input ports of the alarm control unit 102 of each carriage are connected to the power supply unit.

[0133] In the disclosed embodiment, the same output ports in different alarm control units 102 are connected to the same train bus 101, and correspondingly, the carriage control circuits 103 of different carriages are also connected to the same train bus 101. This allows the hard-wired signal of any alarm control unit 102 to be sent to the carriage control circuits 103 of all carriages at the same time, that is, the fire alarm circuit 100 can centrally control the controlled objects of all carriages.

[0134] Figure 7 A schematic diagram of a fire alarm circuit 100 provided in an embodiment of the present disclosure Figure 6 ,like Figure 7 As shown, the fire alarm circuit 100 includes: multiple alarm control units 102, multiple car control circuits 103 and a control management unit 104. Each car of the train bus 101 corresponds to an alarm control unit 102 and a car control circuit 103; each alarm control unit 102 has two output ports, including: an internal fire output port a and an external fire output port b. In the embodiment of the present disclosure, the fire alarm circuit 100 includes: two train buses 101, namely an internal fire train line 1011 and an external fire train line 1012.

[0135] In the disclosed embodiment, the controlled objects include the cabin air conditioner and / or cabin door of the same cabin, and correspondingly, the multiple cabin control circuits 103 are circuits for controlling the cabin air conditioner and circuits for controlling the cabin door. The internal fire output port a and the external fire output port b of the cab at the front of the vehicle are both connected to the circuit for controlling the cabin air conditioner, and the external fire output port b is connected to the circuit for controlling the cabin door, wherein the cabin door is only one passage door. The internal fire output port a and the external fire output port b of the first cabin are connected to the circuit for controlling the cabin air conditioner, and the external fire output port b is connected to the circuit for controlling the cabin door, wherein the cabin door is two passage doors.

[0136] In the disclosed embodiment, for each compartment, a first one-way conducting member 105a is provided on the connection path between the internal fire output port a and the circuit for controlling the compartment air conditioner, a first one-way conducting member 105b is provided on the connection path between the external fire output port b and the circuit for controlling the compartment air conditioner, a first one-way conducting member 105a is provided on the connection path between the internal fire output port a and the circuit for controlling the compartment door, a second one-way conducting member 106a is provided on the connection path between the internal fire output port a and the train bus 101, and a second one-way conducting member 106b is provided on the connection path between the external fire output port b and the train bus 101. The connection line between the output port and the compartment control circuit 103 and the connection line between the output port and the train bus 101 are two branch lines electrically connecting the same output port.

[0137] In the embodiment of the present disclosure, a relay 108 is arranged on the connection path between the train bus 101 and the control management unit 104, a third one-way conductor 107a is arranged on the connection channel between the conductive node of the internal fire train line 1011 and the relay 108, and a third one-way conductor 107b is arranged on the connection channel between the conductive node of the external fire train line 1012 and the relay 108.

[0138] In the embodiment of the present disclosure, the fire alarm circuit 100 may include a power supply unit 109 to provide a stable input voltage to the alarm control units 102 of all carriages at the same time, or may include multiple power supply units 109 to provide a stable input voltage to the alarm control units 102 of the corresponding carriages respectively, and the two input ports of the alarm control unit 102 of each carriage are connected to the power supply unit 109.

[0139] In the disclosed embodiment, the sound and light alarm 110 is electrically connected to the train bus 101. The sound and light alarm 110 can be located in the driver's cab at the front and / or rear of the train. If the hard-wire signal is at a high level, the sound and light alarm 110 is energized to remind the driver that there is a fault or a fire.

[0140] In the embodiment of the present disclosure, the connection line between the output port and the car control circuit 103 and the connection line between the output port and the train bus 101 are two different branch lines electrically connected to the same output port, so that the car control circuit 103 of each car only receives the hard-wired signal of the alarm control unit 102 corresponding to the same car, so that each car control circuit 103 can independently control the controlled object of the same car. It can be seen that the fire alarm circuit 100 in the embodiment of the present disclosure can control the controlled object of a single car. In addition, when any car outputs a high-level hard-wired signal, the sound and light alarm is energized, which can remind the driver that there is a fault or a fire.

[0141] The disclosed embodiment also proposes a rail vehicle, which includes the fire alarm circuit in one or more of the above embodiments. Each car of the rail vehicle corresponds to an alarm control unit and a car control circuit, the output port of each alarm control unit is electrically connected to the train bus and the car control circuit of the same car corresponding to the alarm control unit, and the control management unit is electrically connected to the train bus. While the rail vehicle can perform the corresponding alarm operation based on the hard-wired signal through the control management unit of the circuit, the car control circuit of each car can also obtain the above hard-wired signal, and control the controlled object of the same car based on the above hard-wired signal. For example, when the output port of the alarm control unit of a car outputs a hard-wired signal indicating the presence of a fire, the rail vehicle can close the passage door of the corresponding car based on the above hard-wired signal through the car control circuit of the circuit corresponding to the same car of the alarm control unit; at the same time, the rail vehicle can control the rail vehicle to stop immediately based on the above hard-wired signal through the control management unit of the circuit.

[0142] Figure 8 A schematic diagram of a fire alarm method according to an embodiment of the present disclosure is shown in FIG. Figure 8 As shown, the fire alarm method is applied to rail vehicles and includes the following steps:

[0143] S801, obtaining the collection signal of the fire probe;

[0144] S802, generating a hard-wire signal corresponding to the collected signal through the alarm control unit 102 in the same compartment as the fire probe, and sending the hard-wire signal to the control management unit 104 and the compartment control circuit 103 in the same compartment;

[0145] S803 . Control the controlled object in the same carriage through the carriage control circuit 103 .

[0146] In step S801, in the embodiment of the present disclosure, the rail vehicle can obtain a collection signal from a fire probe integrated in the fire alarm circuit 100 itself through the fire alarm circuit 100, and also obtain a collection signal from a fire probe outside the fire alarm circuit 100 through the fire alarm circuit 100.

[0147] In step S802, in the embodiment of the present disclosure, the rail vehicle generates a hard-wire signal corresponding to the collected signal through the alarm control unit 102 of the same compartment corresponding to the fire probe, and sends it to the compartment control circuit 103 of the same compartment. The hard-wire signal can be transmitted through a hard-wire cable or through a combination of a hard-wire cable and a data cable.

[0148] In step S803, the rail vehicle controls the controlled objects in the same carriage through the carriage control circuit 103. The carriage control circuit 103 may control the controlled objects in the same carriage immediately or after a preset time.

[0149] In the embodiment of the present disclosure, after the rail vehicle generates a hard-wire signal corresponding to the collected signal through the alarm control unit 102, it can also send it to the control management unit 104. In the embodiment of the present disclosure, the rail vehicle can perform corresponding alarm operations based on the hard-wire signal through the control management unit 104.

[0150] In the disclosed embodiment, each car of the rail vehicle corresponds to an alarm control unit and a car control circuit, the output port of each alarm control unit is electrically connected to the train bus and the car control circuit of the same car as the alarm control unit, and the control management unit is electrically connected to the train bus. While the rail vehicle can perform the corresponding alarm operation based on the hard-wired signal through the control management unit of the circuit, the car control circuit of each car can also obtain the above-mentioned hard-wired signal, and control the controlled object of the same car based on the above-mentioned hard-wired signal. For example, when the output port of the alarm control unit of a car outputs a hard-wired signal indicating the existence of a fire, the rail vehicle can close the passage door of the corresponding car based on the above-mentioned hard-wired signal through the car control circuit of the same car corresponding to the alarm control unit of the circuit; at the same time, the rail vehicle can control the rail vehicle to stop immediately based on the above-mentioned hard-wired signal through the control management unit of the circuit.

[0151] Fig. 9 A schematic diagram of a rail vehicle provided in an embodiment of the present disclosure, such as Fig. 9 As shown, the rail vehicle 900 includes:

[0152] The acquisition module 901 is configured to acquire the acquisition signal of the fire probe;

[0153] The sending module 902 is configured to generate a hard-wire signal corresponding to the collected signal through the alarm control unit of the same carriage corresponding to the fire probe, and send the hard-wire signal to the control management unit 104 and the carriage control circuit of the same carriage;

[0154] The control module 903 is configured to control the controlled object in the same carriage through the carriage control circuit.

[0155] An embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, part or all of the steps in the above method are implemented.

[0156] It should be noted that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of the present disclosure, please refer to the description of the method embodiments of the present disclosure for understanding.

[0157] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present disclosure, the size of the serial number of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure. The serial numbers of the embodiments of the present disclosure are for description only and do not represent the advantages and disadvantages of the embodiments.

[0158] It should be noted that, in this article, the terms "include", "comprises" or any other variations 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 sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0159] In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0160] The units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple grid units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0161] In addition, all functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may be separately configured as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0162] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0163] Alternatively, if the above-mentioned integrated unit of the present disclosure is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a grid device, etc.) to execute all or part of the methods described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0164] The above is only an embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A fire alarm circuit, characterized in that: include: Train bus, multiple alarm control units, multiple carriage control circuits and control management unit; Wherein, each carriage corresponds to one of the alarm control units and one of the carriage control circuits; and the output port of each of the alarm control units is electrically connected to the train bus and the carriage control circuit of the same carriage as the alarm control unit; The alarm control unit is configured to generate a hard-line signal based on the collected signal of the fire probe; The carriage control circuit is configured to control a controlled object of the same carriage based on the hard-wire signal; The control management unit is electrically connected to the train bus and is configured to perform corresponding alarm operations based on the hard-wire signal.

2. The circuit according to claim 1, characterized in that The circuit is provided with a first unidirectional conductive member for each of the carriages; The first unidirectional conductive member is connected to the connection path between the output port and the carriage control circuit of the same carriage, and is configured to allow the hard-wire signal to be transmitted from the output port to the carriage control circuit.

3. The circuit according to claim 2, characterized in that The circuit is provided with a second one-way conducting member for each of the carriages; The second unidirectional conductive member is connected to the connection path between the output port and the train bus, and is configured to allow the hard-wire signal to be transmitted from the output port to the train bus.

4. The circuit according to claim 3, characterized in that The first unidirectional conductive member is connected to the output port and a first connecting line of the carriage control circuit; The second unidirectional conductive member is connected to the output port and a second connecting line of the train bus, and the first connecting line and the second connecting line are two branch lines electrically connected to the same output port.

5. The circuit according to claim 3, characterized in that The first unidirectional conductive member is connected to a third connecting line between the conductive node of the train bus and the carriage control circuit; The second unidirectional conductive member is connected to a fourth connecting line between the output port and the conductive node, and the third connecting line and the fourth connecting line are two branch lines electrically connected to the same conductive node.

6. The circuit according to claim 5, characterized in that The same output ports in different alarm control units are connected to the same train bus.

7. The circuit according to any one of claims 1 to 6, characterized in that: The circuit is provided with a relay; The relay is connected to the connection path between the train bus and the control management unit, and is configured to connect the connection path between the train bus and the control management unit when the hard-wire signal is at a high level; and to disconnect the connection path between the train bus and the control management unit when the hard-wire signal is at a low level.

8. The circuit according to claim 7, characterized in that The circuit is provided with a third unidirectional conductive member; The third unidirectional conductor, connected to the connection path between the train bus and the relay, is configured to allow the hard-wire signal to be transmitted from the train bus to the relay.

9. The circuit according to any one of claims 1 to 6, characterized in that: Each of the alarm control units has a plurality of output ports, and at least some of the plurality of output ports are connected to the train bus and the carriage control circuit of the same carriage.

10. The circuit according to claim 9, characterized in that The plurality of said output ports include an internal fire output port, an external fire output port and a fire fault output port; The train bus includes an internal fire train line, an external fire train line and a fire fault train line; The internal fire output port is electrically connected to the internal fire train line and the carriage control circuit; The external fire output port is electrically connected to the external fire train line and the carriage control circuit; The fire fault output port is electrically connected to the disaster fault train line.

11. The circuit according to any one of claims 1 to 6, characterized in that: The controlled objects include the cabin air conditioner and / or the cabin door.

12. A rail vehicle, characterized in that: Comprising the fire alarm circuit according to any one of claims 1 to 11.

13. A fire alarm method, characterized in that: Applied to a rail vehicle, the method comprises: Obtain the acquisition signal of the fire probe; Generate a hard-wire signal corresponding to the collected signal through the alarm control unit of the same carriage corresponding to the fire probe, and send it to the control management unit and the carriage control circuit of the same carriage; The controlled object in the same carriage is controlled by the carriage control circuit.

14. A rail vehicle, characterized in that: include: An acquisition module is configured to acquire a collection signal from a fire probe; A sending module is configured to generate a hard-wire signal corresponding to the collected signal through an alarm control unit in the same carriage corresponding to the fire probe, and send the hard-wire signal to a control management unit and a carriage control circuit in the same carriage; The control module is configured to control the controlled object in the same carriage through the carriage control circuit.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the fire alarm method according to claim 13 is implemented.

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