A train reconnection communication device and a train reconnection communication method, system, and train

Abstract

The present application discloses a train reconnection communication device and a train reconnection communication method, system, and train; it relates to the field of train communication and solves the risk of communication failure caused by communication connection when realizing train reconnection through wired communication. When the train is reconnected, the communication host controls the first wireless switch and the second wireless switch located at the reconnection end to send a request message and receive a response message, and determines the response message sent by the train to be reconnected on the same track of the train based on the message reception response time and the preset installation distance, and establishes a wireless communication connection based on the current response message. A wireless communication connection is established through the wireless switch, and the response message sent by the train to be reconnected on the same track is accurately identified based on the message reception response time to establish an accurate wireless communication connection, thereby avoiding the risk of communication failure caused by communication connection when realizing train reconnection through wired communication.

Description

Technical Field

[0001] The present application relates to the field of train communications, and in particular to a train reconnection communication device and a train reconnection communication method, system, and train. Background Art

[0002] Nowadays, the communication network topology of trains is mainly a two-layer structure consisting of the train-level Ethernet Train Backbone (ETB) and the vehicle-level Ethernet Communication Network (ECN). The current network topology is usually that data transmission within a single-unit vehicle is mainly realized by ECN, while data communication between trains is realized by ETB.

[0003] like Figure 1 As shown, each train contains two redundant Ethernet Train Backbone Nodes (ETBNs), and the ETBNs between trains are linearly connected in series through two cables A / B. During reconnection, communication connection is achieved through the plug-in structure of the reconnecting coupler. However, since the connector is frequently plugged in and out, it may cause wear of the connector. Therefore, it is necessary to regularly inspect the reconnecting electric hook communication cable and pin connector. The pin connector may have secondary faults during the plug-in and unplugging process, such as bending, breaking or oxidation of the pin. These problems may cause interruption or instability of signal transmission.

[0004] It can be seen that how to solve the risk of communication failure caused by communication connection when realizing train reconnection through wired communication is a technical problem that needs to be solved urgently by people in this field. Summary of the Invention

[0005] The purpose of this application is to provide a train reconnection communication device and a train reconnection communication method, system, and train to solve the risk of communication failure caused by the communication connection when realizing train reconnection through wired communication.

[0006] To solve the above technical problems, the present application provides a train reconnection communication device, comprising: a first wireless switch, a second wireless switch, and a communication host; the number of the first wireless switch and the number of the second wireless switch are two; one group of the first wireless switch and the second wireless switch is arranged at the front end of the train, and the other group of the first wireless switch and the second wireless switch is arranged at the rear end of the train; the first wireless switch and the second wireless switch are separated by a preset installation distance; the first wireless switch and the second wireless switch are respectively connected to the communication host;

[0007] When the train is reconnected, the communication host controls the first wireless switch and the second wireless switch at the reconnection end to send a request message and receive a response message. Based on the message reception response time and the preset installation distance, the response message sent by the train to be reconnected on the same track as the train is determined, and a wireless communication connection is established based on the current response message.

[0008] Optionally, the above train reconnection communication device further includes: a plurality of Ethernet vehicle marshaling network nodes;

[0009] The Ethernet vehicle marshalling network nodes are connected to the first wireless switch and the second wireless switch respectively.

[0010] Optionally, the above-mentioned train reconnection communication device also includes: a first wired switch and a second wired switch; the number of the first wired switch and the second wired switch are two respectively; one group of the first wired switch and the second wired switch are arranged at the head end of the train, and the other group of the first wired switch and the second wired switch are arranged at the tail end of the train, and the first wired switch and the second wired switch are respectively connected to the communication host.

[0011] Optionally, in the above train reconnection communication device, the first wired switch and the second wired switch are respectively connected to each Ethernet vehicle marshaling network node;

[0012] When the train is reconnected, the first wired switch at the reconnecting end is connected to the first wired switch at the reconnecting end of the train to be reconnected through a first cable, and the second wired switch at the reconnecting end is connected to the second wired switch at the reconnecting end of the train to be reconnected through a second cable.

[0013] Optionally, the above-mentioned train reconnection communication device further includes a buffer; the buffer is connected to the first wireless switch and the second wireless switch, and is used to receive the data to be forwarded sent by the Ethernet vehicle marshaling network node.

[0014] To solve the above technical problems, the present application further provides a train reconnection communication method, which is applied to the above train reconnection communication device, and the method includes:

[0015] When the train is reconnected, the first wireless switch and the second wireless switch at the reconnection end are controlled to send a request message;

[0016] Receive multiple response messages;

[0017] Determine the response message sent by the train to be reconnected on the same track as the train based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance;

[0018] Establish a wireless communication connection based on the current response message.

[0019] Optionally, in the above train reconnection communication method, establishing a wireless communication connection according to the current response message includes:

[0020] Controlling the first wireless switch at the reconnection end to establish a first wireless communication channel at a first frequency with the first wireless switch at the reconnection end of the train to be reconnected;

[0021] The second wireless switch at the reconnection end is controlled to establish a second wireless communication channel at a second frequency with the second wireless switch at the reconnection end of the train to be reconnected.

[0022] Optionally, in the above train reconnection communication method, a wireless communication connection is established according to the current response message, and then the method further includes:

[0023] communicating via a first wireless communication channel;

[0024] When the first wireless communication channel triggers a fault warning, switching to the second wireless communication channel for communication;

[0025] When switching, buffering the data to be forwarded received by the first wireless communication channel into a buffer;

[0026] When the second wireless communication channel is switched, the data to be forwarded in the buffer is forwarded through the second wireless communication channel.

[0027] Optionally, in the above train reconnection communication method, triggering a fault warning of the first wireless communication channel includes:

[0028] Obtain the communication packet loss rate every preset monitoring period;

[0029] Determine whether the communication packet loss rate is greater than the preset packet loss rate;

[0030] If so, it is determined that the first wireless communication channel triggers a fault warning.

[0031] Optionally, in the above-mentioned train reconnection communication method, determining the response message sent by the train to be reconnected and located on the same track of the train based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance includes:

[0032] Obtaining a message receiving response time of the first wireless switch and the second wireless switch receiving the current response message;

[0033] Obtaining a first distance and a second distance from the target wireless switch that sends the current response message to the first wireless switch and the second wireless switch according to the message receiving response time;

[0034] Obtaining a test angle of a connection angle between the target wireless switch and the first wireless switch and the second wireless switch according to the first distance, the second distance, and the preset installation distance;

[0035] If the test angle is within the preset angle threshold, it is determined that the current target wireless switch is a train to be reconnected that is located on the same track as the train.

[0036] To solve the above technical problems, the present application also provides a train reconnection communication system, comprising:

[0037] A sending request module, configured to control the first wireless switch and the second wireless switch at the reconnection end to send a request message when the train is reconnected;

[0038] A response receiving module, configured to receive multiple response messages;

[0039] An analysis module, configured to determine a response message sent by a train to be reconnected and located on the same track as the train based on a message reception response time of the first wireless switch and the second wireless switch receiving the same response message and a preset installation distance;

[0040] The connection establishment module is used to establish a wireless communication connection according to the current response message.

[0041] In order to solve the above technical problems, the present application also provides a train, including the above train reconnection communication device.

[0042] The train reconnection communication device provided in the present application includes: a first wireless switch, a second wireless switch, and a communication host; the number of the first wireless switch and the second wireless switch are two respectively; one group of the first wireless switch and the second wireless switch are arranged at the head end of the train, and the other group of the first wireless switch and the second wireless switch are arranged at the tail end of the train; the first wireless switch and the second wireless switch are separated by a preset installation distance; the first wireless switch and the second wireless switch are respectively connected to the communication host; when the train is reconnected, the communication host controls the first wireless switch and the second wireless switch at the reconnection end to send a request message and receive a response message, determines the response message sent by the train to be reconnected on the same track of the train according to the message reception response time and the preset installation distance, and establishes a wireless communication connection according to the current response message. A wireless communication connection is established through the wireless switch, and the response message sent by the train to be reconnected on the same track is accurately identified by the message reception response time to establish an accurate wireless communication connection, thereby avoiding the risk of communication failure caused by the communication connection when the train is reconnected through wired communication.

[0043] In addition, the present application also provides a train reconnection communication method, system, and train, which correspond to the above-mentioned train reconnection communication device and have the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] Figure 1 A schematic diagram of a train reconnection communication device provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of a calculation analysis provided in an embodiment of the present application;

[0047] Figure 3 A train diagram of a train reconnection communication method provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of a train reconnection communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] The core of this application is to provide a train reconnection communication device and a train reconnection communication method, system, and train.

[0051] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0052] "Train reconnection" generally refers to the reconnection of train cars or vehicles. This requires reconnecting to the signaling system to ensure the train correctly follows signals while traveling on the railway network. Reconnection is typically achieved through electrical connections between train cars. These connections include power lines, control signal lines, and possibly data communication lines. These electrical connections ensure that power and control information can be shared between the cars.

[0053] Train couplers feature a pluggable design that allows vehicles to connect and disconnect quickly and safely when needed. Frequent plugging and unplugging of connectors can cause wear and tear. This wear can lead to a loose connection and even signal transmission issues. Pin connectors can also experience secondary failures during the plugging and unplugging process, such as bent, broken, or oxidized pins. These issues can cause interruptions or unstable signal transmission.

[0054] To solve the above problems, this embodiment provides a train reconnection communication device, comprising: a first wireless switch, a second wireless switch, and a communication host; the first wireless switch 11 and the second wireless switch 12 are each two; one set of the first wireless switch 11 and the second wireless switch 12 is installed at the front end of the train, and the other set of the first wireless switch 11 and the second wireless switch 12 is installed at the rear end of the train; the first wireless switch 11 and the second wireless switch 12 are installed at a preset distance apart; the first wireless switch 11 and the second wireless switch 12 are respectively connected to the communication host 13;

[0055] When the train is reconnected, the communication host 13 controls the first wireless switch 11 and the second wireless switch 12 located at the reconnection end to send a request message and receive a response message. According to the message reception response time and the preset installation distance, the response message sent by the train to be reconnected on the same track of the train is determined, and a wireless communication connection is established based on the current response message.

[0056] In a wireless environment, since the omnidirectional antenna receives and sends data packets in a specific direction, it is impossible to confirm the direction and distance of the received data packet, resulting in any node on the wireless train backbone network being unable to confirm whether the received data packet is from the wireless switch (WLTBN) on the backbone network of this train, or whether it is the WLTBN of the adjacent train. In order to adapt to the wireless environment, the adjacent train and direction information are confirmed externally. In this embodiment, two redundant wireless switches are deployed at the head position. Due to the length of the train (each train is more than 200m long), the two leading cars of a single train cannot rely on wireless communication (WiFi coverage range is 100m), so the two leading cars of a single train cannot recognize each other. After the train is reconnected, only the reconnected end can recognize the adjacent car. However, since wireless communication is an open communication method, if there are vehicles on the adjacent track, misidentification may occur. The two nodes of the lead train can simultaneously establish communication connections with a single node of the train to be reconnected. After the connection, the distance between the two nodes can be calculated through message communication (the distance is calculated by the round-trip time of the request message from the sending node to the receiving node. The sending node records the sending timestamp when sending the request message, and the receiving node records the receiving timestamp when receiving the response message. The round-trip time can be calculated by the difference between the two timestamps and the signal propagation speed. Generally, the propagation speed of electromagnetic waves in wireless communication is equal to the speed of light).

[0057] It should be noted that the communication host in this application is used to receive the sending request message time data, receiving message response time data, etc. of the first wireless switch and the second wireless switch, and determine whether they are trains on the same track. It does not control the communication work between the first wireless switch and the second wireless switch.

[0058] Figure 2 A calculation analysis diagram is provided for the embodiment of the present application, such as Figure 2 As shown, it is assumed that the distance between the first wireless switch 11A1 of the vehicle and the first wireless switch 11B1 of the train to be reconnected is d1, the distance between the second wireless switch 12A2 of the vehicle and the first wireless switch 11B1 of the train to be reconnected is d2, and the distance between A3 and the first wireless switch 11C1 of the adjacent track train is d 11 The distance between the second wireless switch 12A2 of the vehicle and the first wireless switch 11C1 of the adjacent train is d 22 Therefore, there exists d1>d 11 , and d2>d 22 Based on this, it is possible to distinguish between the multiplexed vehicles in this lane and the non-multiplexed vehicles in the adjacent lane.

[0059] If only one vehicle is detected, it is also possible to identify whether it is a double connection through triangulation. Assuming that the preset installation distance between A1 and A2 is H, the following relationship exists (approximately):

[0060]

[0061] The distance relationship between adjacent track vehicles is:

[0062]

[0063] The verification and analysis of the above method are as follows:

[0064] When the distance between the two vehicles is taken as some typical values, with A1 as the center and the track axis as the center, the angle range of angle A is shown in Table 1:

[0065] Table 1 Angle measurement accuracy calculation

[0066]

[0067] Calculation reference:

[0068] For example: the standard track gauge is 1435mm, the car body width is 3360mm, and the head car length is about 26000mm; the preset installation distance of wireless nodes A1-A2 is 2000mm; the minimum center distance of the track is 5000mm.

[0069] Calculation formula:

[0070]

[0071] According to the calculation results, within 10 meters, the minimum angle of the adjacent track vehicle is greater than the maximum angle of the opposite track vehicle, which can effectively distinguish between adjacent track and opposite track vehicles. Therefore, the calculated angle can also be used to distinguish between adjacent track vehicles and the opposite track vehicles on the same track.

[0072] When the train is reconnected, the communication host 13 controls the first wireless switch 11 and the second wireless switch 12 located at the reconnection end to send a request message and receive a response message, and determines the response message sent by the train to be reconnected on the same track of the train based on the message reception response time and the preset installation distance, that is, determines the switch to which the train to be reconnected on the same track sends a response message, and establishes a wireless communication connection based on the current response message.

[0073] The train reconnection communication device provided by the embodiment of the present application includes: a first wireless switch 11, a second wireless switch 12, and a communication host 13; the number of the first wireless switch 11 and the second wireless switch 12 is two respectively; one group of the first wireless switch 11 and the second wireless switch 12 is arranged at the front end of the train, and the other group of the first wireless switch 11 and the second wireless switch 12 is arranged at the rear end of the train; the first wireless switch 11 and the second wireless switch 12 are separated by a preset installation distance; the first wireless switch 11 and the second wireless switch 12 are respectively connected to the communication host 13; when the train is reconnected, the communication host 13 controls the first wireless switch 11 and the second wireless switch 12 located at the reconnection end to send a request message and receive a response message, determines the response message sent by the train to be reconnected on the same track of the train based on the message reception response time and the preset installation distance, and establishes a wireless communication connection based on the current response message. A wireless communication connection is established through a wireless switch, and the response message sent by the train to be reconnected on the same track is accurately identified by the message reception response time to establish an accurate wireless communication connection, avoiding the risk of communication failure caused by the communication connection when the train is reconnected through wired communication.

[0074] According to the above embodiment, in a specific embodiment, it further includes: a plurality of Ethernet vehicle marshaling network nodes;

[0075] The Ethernet vehicle marshalling network nodes are connected to the first wireless switch 11 and the second wireless switch 12 respectively.

[0076] The multiple Ethernet train marshaling network nodes refer to nodes in an Ethernet communication network and are used to enable communication between various systems within the train, including train control, monitoring, and information transmission. The Ethernet train marshaling network nodes are connected to a first wireless switch 11 and a second wireless switch 12, respectively. The first wireless switch 11 and the second wireless switch 12 communicate independently and do not interfere with each other.

[0077] According to the above embodiment, in a specific embodiment, it also includes: a first wired switch and a second wired switch; the number of the first wired switch and the second wired switch are two respectively; one group of the first wired switch and the second wired switch are arranged at the head end of the train, and the other group of the first wired switch and the second wired switch are arranged at the tail end of the train, and the first wired switch and the second wired switch are respectively connected to the communication host 13.

[0078] The first and second wired switches are each connected to a communication host 13, which determines whether to switch communication channels and monitors communication quality. The first and second wired switches establish wired communication connections with the first and second wired switches at the reconnecting end of the train to be reconnected, respectively. The two wired communication channels are mutually redundant, providing backup.

[0079] According to the above embodiment, in a specific embodiment, the first wired switch and the second wired switch are respectively connected to each Ethernet vehicle marshaling network node;

[0080] When the train is reconnected, the first wired switch at the reconnecting end is connected to the first wired switch at the reconnecting end of the train to be reconnected through a first cable, and the second wired switch at the reconnecting end is connected to the second wired switch at the reconnecting end of the train to be reconnected through a second cable.

[0081] The first wired switch and the second wired switch are respectively connected to the Ethernet vehicle marshaling network nodes, and their communications are independent of each other and do not interfere with each other.

[0082] According to the above embodiment, in a specific embodiment, a buffer is further included; the buffer is connected to the communication host 13.

[0083] The buffer can be used to cache data to be forwarded, and can also avoid the loss of sent data when switching communication channels.

[0084] The present application also provides a train reconnection communication method, which is applied to the above train reconnection communication device, such as Figure 3 As shown, the method includes:

[0085] S11: When the train is reconnected, the first wireless switch and the second wireless switch at the reconnection end are controlled to send a request message;

[0086] S12: receiving multiple response messages;

[0087] S13: Determine a response message sent by the train to be reconnected and located on the same track as the train based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance;

[0088] S14: Establish a wireless communication connection according to the current response message.

[0089] The train reconnection communication method provided in this embodiment controls the first wireless switch 11 and the second wireless switch 12 at the reconnection end to send a request message when a train is reconnected. Multiple response messages are received. Based on the message reception response time and the preset installation distance of the first wireless switch 11 and the second wireless switch 12 receiving the same response message, the response message sent by the train to be reconnected located on the same track as the train is determined. A wireless communication connection is established based on the current response message. By establishing a wireless communication connection through the wireless switch and accurately identifying the response message sent by the train to be reconnected located on the same track based on the message reception response time, an accurate wireless communication connection is established, avoiding the risk of communication failure caused by wired communication when achieving communication connection during train reconnection.

[0090] Specifically, determining the response message sent by the train to be reconnected on the same track of the train based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance includes:

[0091] Obtaining a message receiving response time of the first wireless switch and the second wireless switch receiving the current response message;

[0092] Obtaining a first distance and a second distance from the target wireless switch that sends the current response message to the first wireless switch and the second wireless switch according to the message receiving response time;

[0093] Obtaining a test angle of a connection angle between the target wireless switch and the first wireless switch and the second wireless switch according to the first distance, the second distance, and the preset installation distance;

[0094] If the test angle is within the preset angle threshold, it is determined that the current target wireless switch is a train to be reconnected that is located on the same track as the train.

[0095] like Figure 2 As shown, this embodiment determines whether a train is on the same track by calculating the test angle A of the connecting line between the target wireless switch and the first wireless switch and the second wireless switch, thereby accurately identifying and establishing a communication channel.

[0096] According to the above embodiment, in a specific embodiment, the above train reconnection communication method, establishing a wireless communication connection according to the current response message, includes:

[0097] Control the first wireless switch 11 at the reconnection end to establish a first wireless communication channel at a first frequency with the first wireless switch 11 at the reconnection end of the train to be reconnected;

[0098] The second wireless switch 12 at the reconnection end is controlled to establish a second wireless communication channel at a second frequency with the second wireless switch 12 at the reconnection end of the train to be reconnected.

[0099] Two wireless communication channels are established simultaneously. During use, only one of them can be used for communication. When the communication quality is poor, it can be switched in time. The two channels communicate in different frequency bands.

[0100] According to the above embodiment, specifically, the train reconnection communication method further includes: a plurality of Ethernet vehicle marshaling network nodes, a first wired switch, and a second wired switch;

[0101] When the train is reconnected, the first wired switch at the control reconnection end is connected to the first wired switch at the reconnection end of the train to be reconnected through a first cable, and the second wired switch at the reconnection end is connected to the second wired switch at the reconnection end of the train to be reconnected through a second cable.

[0102] The first and second wired switches are each connected to a communication host 13, which determines whether to switch communication channels and monitors communication quality. The first and second wired switches establish wired communication connections with the first and second wired switches at the reconnecting end of the train to be reconnected, respectively. The two wired communication channels are mutually redundant, providing backup.

[0103] Specifically, a wireless communication connection is established according to the current response message, and then further includes:

[0104] communicating via a first wireless communication channel;

[0105] When the first wireless communication channel triggers a fault warning, switching to the second wireless communication channel for communication;

[0106] When switching, buffering the data to be forwarded received by the first wireless communication channel into a buffer;

[0107] When the second wireless communication channel is switched, the data to be forwarded in the buffer is forwarded through the second wireless communication channel.

[0108] When the wireless channel needs to be switched, the data received during the switching is cached in the buffer. When the new channel is established, the data to be forwarded stored in the buffer is sent first.

[0109] If wireless communication is currently in use, data received via the wireless link is stored. If wired communication is currently in use, data received via the wired link is stored. A cache queue (first-in, first-out) is used to store data to ensure data order. The communication quality of the currently used communication channel (wireless or wired) is monitored, such as packet loss rate and packet error rate. (For example, if an ETBN receiving port has a 100ms cycle and should receive 100 packets within the cycle, only 90 are actually received, resulting in a 10% packet loss rate.)

[0110] Specifically, triggering a fault warning of the first wireless communication channel includes:

[0111] Obtain the communication packet loss rate every preset monitoring period;

[0112] Determine whether the communication packet loss rate is greater than the preset packet loss rate;

[0113] If so, the first wireless communication channel triggers a fault warning.

[0114] When the packet loss rate is higher than the preset packet loss rate, the switching condition is triggered and the receiving channel switches to another channel.

[0115] Once the channel switching condition is triggered, after switching to the backup channel, ETBN will send out the data cached before the switching during the switching process, first sending the cached data, and then sending the real-time data (after the real-time data is generated, the channel switching is completed, the real-time data is sent immediately, and the cache queue is cleared to receive new data) to ensure data integrity and real-time performance.

[0116] After the handover is completed, a handover interactive confirmation is required (first sending a request frame and then sending a response frame to each other, and the handover is completed when a handshake is reached) to ensure the correct transmission of data.

[0117] This application also provides a train reconnection communication system, Figure 4 A schematic diagram of a train reconnection communication system provided in an embodiment of the present application is shown in FIG. Figure 4 Shown, including:

[0118] The sending request module 21 is used to control the first wireless switch and the second wireless switch at the reconnection end to send a request message when the train is reconnected;

[0119] A response receiving module 22 is configured to receive multiple response messages;

[0120] An analysis module 23 is configured to determine a response message sent by a train to be reconnected and located on the same track as the train based on a message reception response time of the first wireless switch and the second wireless switch receiving the same response message and a preset installation distance;

[0121] The connection establishing module 24 is configured to establish a wireless communication connection according to the current response message.

[0122] In order to solve the above technical problems, the present application also provides a train, including the above train reconnection communication device, with the same effect as above.

[0123] The above is a detailed introduction to the train reconnection communication device and train reconnection communication method, system, and train provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0124] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A train reconnection communication device, characterized in that: include: a first wireless switch, a second wireless switch, and a communication host; the number of the first wireless switch and the number of the second wireless switch are two; one group of the first wireless switch and the second wireless switch is set at the front end of the train, and the other group of the first wireless switch and the second wireless switch is set at the rear end of the train; the first wireless switch and the second wireless switch are separated by a preset installation distance; the first wireless switch and the second wireless switch are respectively connected to the communication host; When the train is reconnected, the communication host controls the first wireless switch and the second wireless switch located at the reconnection end to send a request message and receive a response message, determines the response message sent by the train to be reconnected on the same track as the train based on the message reception response time and the preset installation distance, and establishes a wireless communication connection based on the current response message.

2. The train reconnection communication device according to claim 1, characterized in that: Also includes: Multiple Ethernet vehicle marshaling network nodes; The Ethernet vehicle marshalling network nodes are connected to the first wireless switch and the second wireless switch respectively.

3. The train reconnection communication device according to claim 2, characterized in that: Also includes: A first wired switch and a second wired switch; there are two of the first wired switch and the second wired switch respectively; one group of the first wired switch and the second wired switch is set at the front end of the train, and the other group of the first wired switch and the second wired switch is set at the rear end of the train, and the first wired switch and the second wired switch are respectively connected to the communication host.

4. The train reconnection communication device according to claim 3, characterized in that: The first wired switch and the second wired switch are respectively connected to each of the Ethernet vehicle marshaling network nodes; When the train is reconnected, the first wired switch at the reconnection end is connected to the first wired switch at the reconnection end of the train to be reconnected through a first cable, and the second wired switch at the reconnection end is connected to the second wired switch at the reconnection end of the train to be reconnected through a second cable.

5. The train reconnection communication device according to claim 2, characterized in that: It also includes a buffer; the buffer is connected to the first wireless switch and the second wireless switch, and is used to receive the data to be forwarded sent by the Ethernet vehicle marshaling network node.

6. A train reconnection communication method, characterized in that: Applied to the train reconnection communication device according to any one of claims 1 to 5, the method comprising: When the train is reconnected, the first wireless switch and the second wireless switch at the reconnection end are controlled to send a request message; Receive multiple response messages; Determining the response message sent by the train to be reconnected and located on the same track as the train based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance; A wireless communication connection is established according to the current response message.

7. The train reconnection communication method according to claim 6, characterized in that: The establishing of a wireless communication connection according to the current response message includes: Controlling the first wireless switch at the reconnection end to establish a first wireless communication channel at a first frequency with the first wireless switch at the reconnection end of the train to be reconnected; The second wireless switch located at the reconnection end is controlled to establish a second wireless communication channel at a second frequency with the second wireless switch located at the reconnection end of the train to be reconnected.

8. The train reconnection communication method according to claim 7, characterized in that: The step of establishing a wireless communication connection according to the current response message further includes: communicating via the first wireless communication channel; When the first wireless communication channel triggers a fault warning, switching to the second wireless communication channel for communication; When the second wireless communication channel is switched, buffering the data to be forwarded received via the first wireless communication channel into a buffer; When the switching of the second wireless communication channel is completed, the data to be forwarded in the buffer is forwarded through the second wireless communication channel.

9. The train reconnection communication method according to claim 7, characterized in that: The triggering fault warning of the first wireless communication channel includes: Obtain the communication packet loss rate every preset monitoring period; Determining whether the communication packet loss rate is greater than a preset packet loss rate; If so, it is determined that the first wireless communication channel triggers a fault warning.

10. The train reconnection communication method according to claim 6, characterized in that: The determining, based on the message reception response time of the first wireless switch and the second wireless switch receiving the same response message and the preset installation distance, the response message sent by the train to be reconnected and located on the same track as the train includes: Obtaining a message receiving response time of the first wireless switch and the second wireless switch receiving the current response message; Obtaining a first distance and a second distance from the target wireless switch that sends the current response message to the first wireless switch and the second wireless switch according to the message reception response time; Obtaining a test angle of an included angle between the target wireless switch and the first wireless switch and the second wireless switch according to the first distance, the second distance, and the preset installation distance; If the test angle is within the preset angle threshold, it is determined that the current target wireless switch is a train to be reconnected that is located on the same track as the train.

11. A train reconnection communication system, characterized in that: The train reconnection communication device according to any one of claims 1 to 5 comprises: A sending request module, configured to control the first wireless switch and the second wireless switch at the reconnection end to send a request message when the train is reconnected; A response receiving module, configured to receive multiple response messages; an analysis module, configured to determine the response message sent by the train to be reconnected and located on the same track as the train based on a message reception response time of the first wireless switch and the second wireless switch receiving the same response message and a preset installation distance; The connection establishing module is used to establish a wireless communication connection according to the current response message.

12. A train, characterized in that: The invention comprises the train reconnection communication device according to any one of claims 1 to 5.

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