Real-time communication system of heavy-load railway wagon

Abstract

The invention relates to a heavy haul railway wagon real-time communication system, a heavy haul railway wagon comprises a plurality of train groups, each train group comprises a control locomotive and a transport vehicle, and the system comprises a locomotive laser switch configured to send a control instruction in an electric signal form to a locomotive laser communication assembly of the current train group, receiving an electric signal control instruction sent by the locomotive laser communication component of the current train group; the locomotive laser communication assembly is configured to convert the electric signal control instruction into an optical signal control instruction when receiving the electric signal control instruction, and send the optical signal control instruction to an adjacent transport vehicle or an adjacent locomotive laser communication assembly; when the optical signal control instruction is received, the optical signal control instruction is converted into an electric signal form control instruction, and the electric signal form control instruction is sent to a locomotive laser switch of a current train group; and the vehicle laser transmission module is configured to receive the optical signal control instruction and send the optical signal control instruction to the adjacent locomotive laser communication assembly. By means of the method and device, the problem that the multi-marshalling train information transmission rate is low is solved.

Description

Technical Field

[0001] This application relates to the field of railway freight cars, and particularly to a real-time communication system for heavy-haul railway freight cars. Background Art

[0002] During the operation of railway freight cars, train commands are transmitted through the change of the pressure in the train pipe that runs through the whole train. Since the propagation speed of the change of the train pipe pressure is slow, during the real-time transmission of commands for heavy-haul trains with a large number of formations, it will lead to inconsistent braking and release states between the front and rear of the formation trains, resulting in a large longitudinal impact of the train and the problem of coupler separation.

[0003] Currently, between the coupled train carriages, the first carriage and the second carriage are connected through a windshield and a coupler, and on the first carriage and the second carriage, an on-vehicle switch and a dual-mode device for wireless optical frequency communication are provided, and a data link is established between the first carriage and the second carriage through a wireless communication method to transmit data in the form of visible light.

[0004] The existing technology is applicable to communication between adjacent carriages, but when used on multi-formation trains, the data transmission is unstable and the information transfer rate is slow. Summary of the Invention

[0005] Embodiments of this application provide a real-time communication system for heavy-haul railway freight cars to at least solve the problems of unstable data transmission and slow information transfer rate in multi-formation trains in related technologies.

[0006] In a first aspect, embodiments of this application provide a real-time communication system for heavy-haul railway freight cars for transmitting control commands. The heavy-haul railway freight car includes a plurality of train groups, each train group includes a control locomotive and a transportation vehicle, and the multiple train groups are successively coupled. The communication system includes: a locomotive laser switch and a locomotive laser communication component provided on the control locomotive, and a vehicle laser transmission module provided on the transportation vehicle; wherein, The locomotive laser switch is configured to send an electrical signal control command to the locomotive laser communication component of the current train group, and receive the electrical signal control command obtained by the locomotive laser communication component of the current train group through an adjacent train group; The locomotive laser communication component is configured to, when receiving an electrical signal control command, convert it into an optical signal control command, and send it to the vehicle laser transmission module of the current train group, the locomotive laser communication component and the vehicle laser transmission module of the adjacent train group; when receiving an optical signal control command, convert it into an electrical signal form control command, and send it to the locomotive laser switch of the current train group; The vehicle laser transmission module is configured to receive an optical signal control command, and send it to the locomotive laser communication component and the vehicle laser transmission module of the current train group, and the locomotive laser communication component of the adjacent train group.

[0007] In some of these embodiments, with the forward direction being the direction in which the heavy-haul freight car travels and the reverse direction being the rear, the locomotive laser communication component includes a locomotive laser communication unit located on top of the control locomotive and connected to the locomotive laser switch of the current train set via a cable. The locomotive laser communication unit is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication units of the previous train set and / or the next train set; when receiving an optical signal control instruction, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch of the current train set.

[0008] In some of these embodiments, the control locomotive in any train set includes a master locomotive or a slave locomotive; the locomotive laser communication unit provided on the master locomotive is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication unit of the slave locomotive in the next train set; when receiving an optical signal control instruction sent by the slave locomotive in the next train set, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch of the current train set.

[0009] In some of these embodiments, the locomotive laser communication unit provided on the slave locomotive is further configured to: when receiving an optical signal control instruction sent by the master locomotive or the slave locomotive in the previous train set, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch of the current train set; when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication unit of the slave locomotive in the next train set, the locomotive laser communication unit of the master locomotive in the previous train set, or the locomotive laser communication unit of the slave locomotive in the previous train set.

[0010] In some of these embodiments, the locomotive laser communication component includes a locomotive laser module located at the end or bottom of the control locomotive and connected to the locomotive laser switch of the current train set via a cable. The locomotive laser module is further configured to: when receiving an electrical signal control instruction, convert it into an optical signal control instruction and send it to the vehicle laser transmission module adjacent to the current train set or the vehicle laser transmission module of the adjacent train set; when receiving an optical signal control instruction, convert it into an electrical signal control instruction and send it to the locomotive laser switch of the current train set.

[0011] In some of these embodiments, the vehicle laser transmission module includes a vehicle laser module and a vehicle switch; wherein, On both the front and rear sides of any vehicle switch, at least one vehicle laser module is connected, which is configured to receive the electrical signal control instruction sent by the vehicle laser module on the front side and send the electrical signal control instruction to the vehicle laser module on the rear side; Any vehicle laser module is connected to a vehicle switch via a cable. The vehicle laser modules of the current train set are arranged opposite to the locomotive laser modules of the current train set, the vehicle laser modules adjacent to the current train set, and the locomotive laser modules in the adjacent train set, and communicate through an optical path. The vehicle laser module is configured to convert the optical signal control instruction sent by the locomotive laser module of the current train set, the vehicle laser module adjacent to the current train set, and the locomotive laser module in the adjacent train set into an electrical signal control instruction when receiving it, and send it to the vehicle switch of the current train set; when receiving the electrical signal control instruction sent by the vehicle switch of the current train set, convert it into an optical signal control instruction and send it to the locomotive laser module of the current train set, the vehicle laser module adjacent to the current train set, and the locomotive laser module in the adjacent train set.

[0012] In some embodiments, during the communication process between two adjacent train sets, a communication ring network structure is set up. The communication ring network structure includes the locomotive laser switch, locomotive laser communication component, and vehicle laser transmission module of one train set, and the locomotive laser switch and locomotive laser communication component of the other train set. A communication breakpoint is set in the communication ring network structure. When the real-time communication system is normal, the communication breakpoint is disconnected; when the real-time communication system is abnormal, the communication breakpoint is connected.

[0013] In some embodiments, the real-time communication system for heavy-haul railway freight cars further includes: An angle control module, connected to the locomotive laser communication component, is configured to obtain the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive; Based on the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive, obtain the adjustment angles of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions; Based on the adjustment angles of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions, adjust the rotation amplitudes of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions.

[0014] In some embodiments, a locomotive laser communication component communicates with an adjacent another locomotive laser communication component and an adjacent vehicle laser transmission module in a link aggregation manner.

[0015] Compared with the related art, a real-time communication system for heavy-haul railway freight cars provided by an embodiment of the present application sets a locomotive laser switch and a locomotive laser communication component on the control locomotive, and sets a vehicle laser transmission module on the transport vehicle. By communicating between the locomotive laser switch and the locomotive laser communication component, and between the vehicle laser transmission module and the locomotive laser communication component, data and information are transmitted between the control locomotive and the transport vehicle, solving the problems of unstable data transmission and slow information transfer rate in multi-formation trains, and realizing safe, reliable and fast communication in multi-formation trains.

[0016] Details of one or more embodiments of the present application are set forth in the following drawings and description, so that other features, objects and advantages of the present application will become more concise and understandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings: Figure 1 is a schematic structural diagram of a communication system based on train pipe pressure in the related art; Figure 2 is a schematic structural diagram of a communication system based on LTE-R in the related art; Figure 3 is a schematic structural diagram of a communication system based on ad hoc network in the related art; Figure 4 is a schematic structural diagram of a real-time communication system for heavy-haul railway freight cars according to an embodiment of the present application; Figure 5 is a schematic structural diagram of the communication ring network structure in a normal state in a real-time communication system for heavy-haul railway freight cars according to an embodiment of the present application; Figure 6 is a schematic structural diagram of the communication ring network structure in an abnormal state in a real-time communication system for heavy-haul railway freight cars according to an embodiment of the present application; Figure 7 is a schematic structural diagram of information interaction of locomotive laser communication units between control locomotives in a real-time communication system for heavy-haul railway freight cars according to an embodiment of the present application.

[0018] In the figure: 101, exhaust valve; 102, train pipe; 401, locomotive laser switch; 402, vehicle switch; 403, locomotive laser communication unit; 404, locomotive laser module; 405, vehicle laser module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0020] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without making creative efforts, the present application can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes made based on the technical content disclosed in the present application are only conventional technical means and should not be understood that the content disclosed in the present application is insufficient.

[0021] Referring to "embodiments" in the present application means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in the present application can be combined with other embodiments without conflict.

[0022] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the ordinary meanings understood by those with ordinary skills in the technical field to which this application belongs. The words such as "a", "an", "one kind", "the" and the like involved in this application do not indicate a quantity limitation and may represent a singular or plural number. The terms "include", "comprise", "have" and any variations thereof involved in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may further include steps or units not listed, or may further include other steps or units inherent to these processes, methods, products or devices. The similar words such as "connect", "be connected", "couple" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0023] As Figure 1 As shown, the traditional instruction transmission method of railway freight cars is to transmit through the pressure change of the train pipe 102 running through the whole train. The train pipe 102 is an air pipe running through the control locomotive and the transport vehicles, and is filled with compressed air inside. When the locomotive driver applies the brake, part of the air in the train pipe 102 is discharged through the exhaust valve 101, resulting in a pressure drop in the train pipe 102 of the whole train. After the air brakes of each vehicle sense the pressure drop, they automatically apply the brake. When the locomotive driver releases the brake, by filling compressed air into the train pipe 102, the pressure rises, and the vehicle brake automatically releases the brake after sensing. The reduction of the air pressure in the train pipe 102 represents a brake instruction, and the increase of the pressure in the train pipe 102 represents a brake release instruction. However, the propagation speed of the pressure change in the train pipe 102 is on average 200 m / s, which cannot meet the requirement of real-time transmission of instructions for long and heavy-haul trains, and will cause inconsistent brake release states at the front and rear of the formed train, resulting in a large longitudinal impact of the train and the problem of coupler separation.

[0024] At present, the project adopts the coordinated operation of locomotive synchronization and air braking, as well as wired ECP (Electronically Controlled Pneumatic Brake System) and other methods. Locomotive synchronization is achieved through communication methods such as 800M radio, GMS-R (Global System for Mobile Communications - Railway), and LTE-R (Long Term Evolution - Railway) to transmit commands between the master locomotive and the slave locomotives. Among them, GMS-R and LTE-R have long communication distances, small transmission delays, and high communication reliability, but they require high costs for arranging base stations along the line. Currently, only the Shuohuang Railway has completed the LTE-R signal transformation. The communication system based on LTE-R is as Figure 2 shown. The 800M radio only needs to be arranged on the locomotive, with relatively low transformation costs, but it has limited transmission distance, small communication bandwidth, large transmission delay, and its communication reliability is restricted by mountains, tunnels, and bridges. Wired ECP uses the Lonworks bus for transmission. Its advantage is high transmission stability, but its disadvantage is that it cannot meet the requirements of flexible formation of heavy-haul freight trains, and its communication bandwidth is ≤1Mbps. The communication system based on self-organizing networks such as radio, LoRa, and Zigbee is as Figure 3 shown. The exploration and research of other cutting-edge command transmission methods mainly adopt Internet of Things communication technologies, including LoRa, WifeSun, NFC, Zigbee, etc. However, the reliability of their transmission is severely affected by mountains, tunnels, and bridges along the heavy-haul railway. At the same time, due to the lack of authorized radio frequency points, the communication is easily interfered.

[0025] In view of the above problems, this application provides a real-time communication system for heavy-haul railway freight cars. The system meets the requirements of low-delay and large-bandwidth transmission of data for long-formation trains, the communication reliability is not affected by mountains, tunnels, and bridges along the line, it has the characteristics of communication security, and at the same time supports the flexible formation application scenarios of trains.

[0026] Figure 4 is a schematic structural diagram of the real-time communication system for heavy-haul railway freight cars according to an embodiment of the present application. As Figure 4 shown, this real-time communication system is used to transmit control commands and can be set on heavy-haul railway freight cars with long formations. The heavy-haul railway freight cars with long formations include multiple train groups. Each train group includes a control locomotive and multiple transportation vehicles successively coupled behind the control locomotive. Multiple train groups are successively coupled. The control locomotive of the current train group is coupled to the transportation vehicle of the previous train group. The real-time communication system includes: a locomotive laser switch 401 and a locomotive laser communication component arranged on the control locomotive, and a vehicle laser transmission module arranged on the transportation vehicle.

[0027] Among them, the locomotive laser switch 401 is located inside the locomotive controlling the train, and is configured to send control instructions in the form of electrical signals to the locomotive laser communication component of the current train group, and receive the electrical signal control instructions obtained by the locomotive laser communication component of the current train group via the adjacent train group.

[0028] The locomotive laser communication component is located at the end, bottom or top of the locomotive controlling the train, and is configured to convert the received electrical signal control instruction into an optical signal control instruction when receiving it, and send it to the vehicle laser transmission module of the current train group or / and the locomotive laser communication component and vehicle laser transmission module of the adjacent train group. When receiving the optical signal control instruction, it is converted into a control instruction in the form of an electrical signal and sent to the locomotive laser switch 401 of the current train group.

[0029] The vehicle laser transmission module is located at the end or bottom of the transport vehicle, and is configured to receive the optical signal control instruction and send it to the locomotive laser communication component, vehicle laser transmission module of the current train group and the locomotive laser communication component of the adjacent train group.

[0030] The locomotive controlling the train generates and issues control instructions. After receiving the control instructions, the locomotive laser switch 401 issues electrical signal control instructions. After receiving them, the locomotive laser communication component of the current train group converts the electrical signal control instructions into optical signal control instructions, and then sends them to the vehicle laser transmission module of the current train group and the locomotive laser communication component and vehicle laser transmission module of the adjacent train group. When the locomotive laser communication component receives the optical signal control instruction, it converts it back into a control instruction in the form of an electrical signal and sends it to the locomotive laser switch 401 of the current train group. After receiving the optical signal control instruction, the vehicle laser transmission module on the transport vehicle transmits it to the locomotive laser communication component of the adjacent train group, realizing the transmission of control instructions within multiple train groups.

[0031] Through the conversion and transmission of electrical-optical signals, compared with the traditional electrical signal transmission method, optical signal transmission has the advantages of strong anti-interference ability, high transmission rate, long transmission distance, etc., which can ensure the stable and efficient transmission of the control instructions of heavy-haul railway freight cars in a complex electromagnetic environment, and improve the communication quality and reliability.

[0032] Furthermore, a master locomotive is set in the train group located at the head of the train. Multiple locomotive laser switches can be set inside the master locomotive, and the multiple locomotive laser switches are sequentially connected via cables.

[0033] In the real-time communication system of heavy-haul railway freight cars, not only can control instructions be transmitted, but also the vehicle status information fed back by the locomotive controlling the train and the transport vehicle can be transmitted along the existing communication link.

[0034] In some of these embodiments, with the traveling direction of the heavy-haul freight train being the front and the direction opposite to the traveling direction being the rear, it is characterized in that the locomotive laser communication component includes a locomotive laser communication unit 403, which is located on the top of the control locomotive and is connected to the locomotive laser switch 401 of the current train set via a cable.

[0035] The locomotive laser communication unit 403 is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication unit 403 of the previous train set and / or the next train set. When receiving an optical signal control instruction, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch 401 of the current train set.

[0036] The locomotive laser communication unit 403 located on the top of the control locomotive receives the electrical signal control instruction from the locomotive laser switch 401 of the current train set via a cable. After converting it into an optical signal control instruction, it is sent to the locomotive laser communication unit 403 of the previous train set or the next train set. When receiving the optical signal control instruction transmitted from the locomotive laser communication unit 403 of other train sets, it is then converted into an electrical signal control instruction and sent to the locomotive laser switch 401 of the current train set to achieve the transmission of control instructions between train sets.

[0037] Setting the locomotive laser communication unit 403 on the top of the control locomotive is conducive to establishing a stable optical communication link between train sets, reducing the impact of factors such as vehicle body shaking and occlusion during vehicle travel on communication, enabling control instructions to be accurately transmitted between different train sets, and improving the coherence and stability of the entire heavy-haul freight train communication system.

[0038] The locomotive laser communication unit 403 realizes data communication between control locomotives. Adopting the link aggregation method, redundant transmission is carried out through two communication links, and a single communication link failure will not cause the communication function to degrade.

[0039] In some of these embodiments, the control locomotive in any train set includes a master control locomotive or a slave control locomotive. The locomotive laser communication unit 403 provided on the master control locomotive is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication unit 403 of the slave control locomotive in the next train set. When receiving the optical signal control instruction sent by the slave control locomotive in the next train set, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch 401 of the current train set.

[0040] The locomotive laser communication unit 403 on the master locomotive faces the next train formation. When receiving an electrical signal control instruction, it converts it into an optical signal control instruction and directionally sends it to the locomotive laser communication unit 403 of the slave locomotive in the next train formation. When receiving the optical signal control instruction sent by the slave locomotive in the next train formation, it converts it into an electrical signal control instruction and sends it to the locomotive laser switch 401, realizing the communication between the master locomotive and the slave locomotive in the next train formation.

[0041] Determine the communication relationship and transmission direction between the master locomotive and the slave locomotive, making the transmission path of the control instruction between train formations clearer, reducing the chaos and interference of signal transmission, improving the accuracy and reliability of communication, and contributing to the orderly control of the operation of the entire heavy-haul railway freight cars.

[0042] In the real-time communication system of heavy-haul railway freight cars, after the train formation changes, the master locomotive can control and monitor the status of the train according to the train formation list to support the flexible formation of the train.

[0043] In some of the embodiments, the locomotive laser communication unit 403 provided on the slave locomotive is further configured to: when receiving the optical signal control instruction sent by the master locomotive or the slave locomotive in the previous train formation, convert the optical signal control instruction into an electrical signal control instruction and send it to the locomotive laser switch 401 of the current train formation. When receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction and send it to the locomotive laser communication unit 403 of the slave locomotive in the next train formation, the locomotive laser communication unit 403 of the master locomotive in the previous train formation, or the locomotive laser communication unit 403 of the slave locomotive in the previous train formation.

[0044] Two locomotive laser communication units 403 can be provided on the slave locomotive, one facing the previous train formation and the other facing the next train formation. The locomotive laser communication unit 403 facing the previous train formation is used to convert the optical signal control instruction received from the master locomotive or the slave locomotive in the previous train formation into an electrical signal control instruction and send it to the locomotive laser switch 401, and is capable of converting the electrical signal control instruction transmitted from the locomotive laser switch 401 into an optical signal control instruction and then sending it to the master locomotive or the slave locomotive in the previous train formation.

[0045] The locomotive laser communication unit 403 facing the next train formation is used to convert the electrical signal control instruction into an optical signal control instruction when receiving it and send it to the slave locomotive in the next train formation, and is capable of receiving the optical signal control instruction sent by the slave locomotive in the next train formation, converting it into an electrical signal control instruction, and sending it to the locomotive laser switch 401, realizing the two-way communication between the slave locomotive and other locomotives.

[0046] The slave locomotive has flexible communication capabilities, enabling it to interact with locomotives at different positions for control command interactions, enhancing the flexibility and adaptability of the entire communication system, and ensuring effective communication and collaborative control among locomotives under complex formation conditions.

[0047] In some of these embodiments, the locomotive laser communication component includes a locomotive laser module 404, which is located at the end or bottom of the control locomotive and is connected to the locomotive laser switch 401 of the current train set via a cable.

[0048] The locomotive laser module 404 is further configured to: when receiving an electrical signal control command, convert it into an optical signal control command and send it to the vehicle laser transmission module of the current train set or the vehicle laser transmission module of an adjacent train set. When receiving an optical signal control command, convert it into an electrical signal control command and send it to the locomotive laser switch 401 of the current train set.

[0049] The locomotive laser module 404 is disposed opposite to the adjacent vehicle laser transmission module and communicates through an optical path. The locomotive laser module 404 receives the electrical signal control command from the locomotive laser switch 401 of the current train set via a cable, converts it into an optical signal control command, and then sends it to the adjacent vehicle laser transmission module. When receiving the optical signal control command from the vehicle laser transmission module, it is converted into an electrical signal control command and sent to the locomotive laser switch 401, realizing the communication between the control locomotive and the transport vehicle.

[0050] Setting the locomotive laser module 404 at the end or bottom of the control locomotive facilitates the establishment of a communication connection with the vehicle laser transmission module on the transport vehicle, optimizes the communication link between the control locomotive and the transport vehicle, and improves the transmission efficiency and stability of the control command within the train set.

[0051] In some of these embodiments, in a plurality of sequentially connected transport vehicles in any train set, a vehicle laser transmission module is provided on each transport vehicle, and the vehicle laser transmission module includes a vehicle laser module 405 and a vehicle switch 402.

[0052] Among them, on both the front and rear sides of any vehicle switch 402, at least one vehicle laser module 405 is connected, and it is configured to receive the electrical signal control command sent by the vehicle laser module 405 on the front side and send the electrical signal control command to the vehicle laser module 405 on the rear side.

[0053] Any vehicle laser module 405 is connected to a vehicle switch 402 via a cable. The vehicle laser modules 405 of the current train set are arranged opposite to the locomotive laser module 404 of the current train set, the vehicle laser modules 405 of the adjacent vehicles in the current train set, and the locomotive laser modules 404 in the adjacent train sets, and communicate via an optical path. The vehicle laser module 405 is configured to convert the optical signal control instructions sent by the locomotive laser module 404 of the current train set, the vehicle laser modules 405 of the adjacent vehicles in the current train set, and the locomotive laser modules 404 in the adjacent train sets into electrical signal control instructions when receiving them, and send them to the vehicle switch 402 of the current train set. When receiving the electrical signal control instructions sent by the vehicle switch 402 of the current train set, it converts them into optical signal control instructions and sends them to the locomotive laser module 404 of the current train set, the vehicle laser modules 405 of the adjacent vehicles in the current train set, and the locomotive laser modules 404 in the adjacent train sets.

[0054] Two adjacent vehicle laser modules 405 are arranged opposite to each other, and the distance between them is less than 150 mm, that is, the communication distance is less than 150 mm.

[0055] At least one vehicle laser module 405 is arranged on both the front and rear sides of any vehicle switch 402, which enables the vehicle switch 402 to receive information from both the front and rear sides, realizes two-way information interaction, and improves the information transmission efficiency. The vehicle switch 402 receives the electrical signal control instructions sent by the vehicle laser module 405 on the front side and sends them to the vehicle laser module 405 on the rear side. When the vehicle laser module 405 receives the optical signal control instructions, it converts them into electrical signal control instructions and sends them to the vehicle switch 402. When receiving the electrical signal control instructions of the vehicle switch 402, it converts them into optical signal control instructions and sends them to the adjacent module, realizing the transmission of control instructions between multiple transport vehicles and between the transport vehicle and the control locomotive.

[0056] The cooperation between the vehicle switch 402 and the vehicle laser module 405 in the vehicle laser transmission module constructs a stable communication network between transport vehicles, enables the control instructions to be transmitted orderly between transport vehicles, and ensures the efficient communication between the transport vehicle and the control locomotive, improving the integrity and reliability of the entire heavy-haul railway freight car communication system.

[0057] In some of the embodiments, during the communication process between two adjacent train sets, a communication ring network structure is set up. The communication ring network structure includes the locomotive laser switch 401, the locomotive laser communication component and the vehicle laser transmission module of one train set, and the locomotive laser switch 401 and the locomotive laser communication component of the other train set. A communication breakpoint is set in the communication ring network structure. When the real-time communication system is normal, the communication breakpoint is disconnected. When the real-time communication system is abnormal, the communication breakpoint is connected.

[0058] During the communication process between two adjacent train sets, a communication ring network structure including the locomotive laser switch 401, the locomotive laser communication component and the vehicle laser transmission module of one train set, the locomotive laser switch 401 and the locomotive laser communication component of the other train set is constructed. The communication breakpoints in the communication ring network structure include communication soft breakpoints. As Figure 5 shown, in the communication ring network structure, the communication soft breakpoints are randomly set by software between the locomotive laser switch 401 and the vehicle switch 402. When the real-time communication system is normal, at the communication soft breakpoints, the adjacent vehicle switch and the locomotive laser switch keep the optical path unblocked, but do not transmit information. The control instruction is transmitted to the communication soft breakpoint and then stops transmitting, avoiding the multiple circulation of information in the communication ring network structure and reducing resource occupancy. As Figure 6 shown, when the real-time communication system is abnormal, a real breakpoint appears in the entire communication link. For example, the communication optical path between the vehicle laser communication components of one train set and those of the other train set is cut off. The communication soft breakpoints resume communication and start transmitting information, forming a backup communication path, and keeping only one position in the communication ring network structure that does not transmit information, ensuring the uninterrupted transmission of control instructions and that a single node failure does not affect the network communication function of the real-time communication system.

[0059] The setting of the communication ring network structure and the communication breakpoints provides a redundant backup mechanism for the communication system. When a certain communication link fails, the transmission path can be quickly changed to ensure that each locomotive laser switch 401, locomotive laser communication component and vehicle laser transmission module in the communication ring network structure can transmit control instructions, greatly improving the fault tolerance and reliability of the communication system and ensuring that the heavy-haul railway freight cars can normally receive and execute control instructions under various conditions.

[0060] As Figure 7 shown, the real-time communication system of the heavy-haul railway freight car controls the rotation angle of the locomotive laser communication unit 403 so that two locomotive laser communication units 403 that are relatively far apart keep the optical path connected for communication. In some embodiments, the real-time communication system of the heavy-haul railway freight car further includes: an angle control module, connected to the locomotive laser communication component, and configured to obtain the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive.

[0061] According to the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive, the adjustment angles of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions are obtained.

[0062] Adjust the rotation amplitude of the locomotive laser communication component of the currently controlled locomotive in the horizontal and vertical directions according to the adjustment angles of the locomotive laser communication component of the currently controlled locomotive in the horizontal and vertical directions.

[0063] The angle control module is connected to the locomotive laser communication component, and obtains the position information of the currently controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the currently controlled locomotive, and the slope information of the adjacent controlled locomotive. Through the analysis and processing of these information, the adjustment angles of the locomotive laser communication component of the currently controlled locomotive in the horizontal and vertical directions are calculated. According to the adjustment angles, the locomotive laser communication component is controlled to rotate correspondingly in the horizontal and vertical directions to keep the communication link connected.

[0064] The angle control module can dynamically adjust the angle of the locomotive laser communication component according to the actual operating state of the locomotive, ensuring that the communication link between locomotives is always in the best state under different positions and slopes, avoiding the weakening or interruption of communication signals caused by angle deviation, and improving the stability and effectiveness of communication.

[0065] The angle control module obtains the position, slope, and formation information of the controlled locomotive from the devices configured in the locomotive control system. The locomotive laser communication units 403 on the previous train group and the current train group realize the dynamic adjustment of the attitude of the locomotive laser communication unit 403 through the automatic centering algorithm based on position and attitude, and perform primary centering. The calculation formula is: , 。

[0066] Among them, is the adjustment angle of the locomotive laser communication unit 403 of the currently controlled locomotive in the horizontal direction, is the adjustment angle of the locomotive laser communication unit 403 of the currently controlled locomotive in the vertical direction, is the position information of the controlled locomotive of the adjacent train group, is the position information of the currently controlled locomotive, is the slope information of the controlled locomotive of the adjacent train group, is the slope information of the currently controlled locomotive.

[0067] Furthermore, is the position information of the controlled locomotive of the previous train group, is the slope information of the controlled locomotive of the previous train group. Or, is the position information of the controlled locomotive of the next train group, is the slope information of the controlled locomotive of the next train group.

[0068] The locomotive laser communication unit 403 dynamically adjusts the communication attitude, which can overcome the influence of complex lines on communication.

[0069] In some of these embodiments, a locomotive laser communication component communicates with another adjacent locomotive laser communication component and an adjacent vehicle laser transmission module in a link aggregation manner.

[0070] The link aggregation manner increases the bandwidth of the communication link and can meet the demand for rapid transmission of a large number of control commands for heavy-haul railway wagons. At the same time, through the redundant backup of multiple links, the reliability of the communication link is enhanced. When a certain physical link fails, the other links can still ensure normal communication, improving the stability and anti-interference ability of the entire communication system.

[0071] Two locomotive laser switches 401 are configured on the control locomotive and are connected in a link aggregation manner. In the case of a single communication link failure, good communication functions can still be maintained. The locomotive laser switch 401 and the locomotive laser communication component form a train-level network, and other devices on the control locomotive are connected to the train-level network in a redundant manner. The locomotive laser switch 401 has a bypass function in case of software and hardware failures, and the failure of a single locomotive laser switch 401 will not cause the degradation of communication functions. The train-level network can realize long-distance communication between two control locomotives and improve the real-time performance of control command transmission.

[0072] The train-level network meets the real-time transmission delay requirements of long formation heavy-haul trains, and its delay is less than or equal to 5 ms.

[0073] Multiple vehicle switches 402 and vehicle laser modules 405 together form a vehicle-level network, and the vehicle-level network runs through the communication links of the entire train.

[0074] The vehicle-level network meets the real-time transmission delay requirements of long formation heavy-haul trains, and its delay is less than or equal to 100 ms.

[0075] In the real-time communication system of heavy-haul railway wagons in the embodiments of the present application, through the train-level network and the vehicle-level network, multi-train group communication is realized, which is not affected by line wireless signals, mountains, tunnels, and bridges, and there is no need to apply for an authorized frequency band and build trackside base stations. Its network bandwidth can meet the synchronous real-time transmission of control commands and the status information of all vehicles in the entire train. For trains with a large tonnage and multiple formations, it can also meet the real-time transmission delay requirements.

[0076] It should be noted that the above-mentioned various modules can be functional modules or program modules, and can be implemented either by software or by hardware. For the modules implemented by hardware, the above-mentioned various modules can be located in the same processor; or the above-mentioned various modules can also be located in different processors in any combination form.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0078] The above-described embodiments only express several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A real-time communication system for heavy-haul railway wagons, which is used to transmit control instructions. The heavy-haul railway wagons include multiple train groups, each train group includes a control locomotive and transport vehicles, and multiple train groups are successively coupled. It is characterized in that, The communication system includes: a locomotive laser switch disposed on the control locomotive, a locomotive laser communication component, and a vehicle laser transmission module disposed on the transport vehicle; wherein, The locomotive laser switch is configured to send an electrical signal control instruction to the locomotive laser communication component of the current train group, and receive the electrical signal control instruction obtained by the locomotive laser communication component of the current train group from the adjacent train group; The locomotive laser communication component is configured to, when receiving an electrical signal control instruction, convert it into an optical signal control instruction, and send it to the vehicle laser transmission module of the current train group, the locomotive laser communication component and the vehicle laser transmission module of the adjacent train group; when receiving an optical signal control instruction, convert it into an electrical signal form control instruction, and send it to the locomotive laser switch of the current train group; The vehicle laser transmission module is configured to receive an optical signal control instruction, and send it to the locomotive laser communication component, the vehicle laser transmission module of the current train group, and the locomotive laser communication component of the adjacent train group.

2. The real-time communication system for heavy-haul railway wagons according to claim 1, wherein Taking the traveling direction of the heavy-haul railway freight car as the front and the reverse traveling direction as the rear, the locomotive laser communication component includes a locomotive laser communication unit, which is located on the top of the control locomotive and is connected to the locomotive laser switch of the current train group via a cable; The locomotive laser communication unit is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction, and send it to the locomotive laser communication unit of the previous train group and / or the next train group; when receiving an optical signal control instruction, convert the optical signal control instruction into an electrical signal control instruction, and send it to the locomotive laser switch of the current train group.

3. The real-time communication system for heavy-haul railway wagons according to claim 2, wherein, The control locomotive in any train group includes a master locomotive or a slave locomotive; the locomotive laser communication unit disposed on the master locomotive is further configured to: when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction, and send it to the locomotive laser communication unit of the slave locomotive in the next train group; when receiving the optical signal control instruction sent by the slave locomotive in the next train group, convert the optical signal control instruction into an electrical signal control instruction, and send it to the locomotive laser switch of the current train group.

4. The real-time communication system for heavy-haul railway wagons according to claim 3, wherein The locomotive laser communication unit disposed on the slave locomotive is further configured to: when receiving the optical signal control instruction sent by the master locomotive or the slave locomotive in the previous train group, convert the optical signal control instruction into an electrical signal control instruction, and send it to the locomotive laser switch of the current train group; when receiving an electrical signal control instruction, convert the electrical signal control instruction into an optical signal control instruction, and send it to the locomotive laser communication unit on the slave locomotive in the next train group, the locomotive laser communication unit on the master locomotive in the previous train group, or the locomotive laser communication unit on the slave locomotive in the previous train group.

5. The real-time communication system for heavy-haul railway wagons according to claim 1, wherein, The locomotive laser communication component includes a locomotive laser module, which is located at the end or bottom of the control locomotive and is connected to the locomotive laser switch of the current train group via a cable; The locomotive laser module is further configured to: when receiving an electrical signal control instruction, convert it into an optical signal control instruction and send it to the vehicle laser transmission module of the current train group or the vehicle laser transmission module of an adjacent train group; when receiving an optical signal control instruction, convert it into an electrical signal control instruction and send it to the locomotive laser switch of the current train group.

6. The real-time communication system for heavy-haul railway wagons according to claim 5, characterized in that The vehicle laser transmission module includes a vehicle laser module and a vehicle switch; wherein, On both sides of any vehicle switch, at least one vehicle laser module is respectively connected, and is configured to receive the electrical signal control instruction sent by the vehicle laser module on the front side and send the electrical signal control instruction to the vehicle laser module on the rear side; Any vehicle laser module is connected to a vehicle switch via a cable. The vehicle laser modules of the current train group are arranged opposite to the locomotive laser module of the current train group, the vehicle laser modules adjacent to the current train group, and the locomotive laser module in the adjacent train group, and communicate via an optical path. The vehicle laser module is configured to: when receiving the optical signal control instruction sent by the locomotive laser module of the current train group, the vehicle laser modules adjacent to the current train group, and the locomotive laser module in the adjacent train group, convert it into an electrical signal control instruction and send it to the vehicle switch of the current train group; when receiving the electrical signal control instruction sent by the vehicle switch of the current train group, convert it into an optical signal control instruction and send it to the locomotive laser module of the current train group, the vehicle laser modules adjacent to the current train group, and the locomotive laser module in the adjacent train group.

7. The real-time communication system for heavy-haul railway wagons according to claim 1, wherein During the communication process between two adjacent train groups, a communication ring network structure is set up. The communication ring network structure includes the locomotive laser switch, the locomotive laser communication component and the vehicle laser transmission module of one train group, and the locomotive laser switch and the locomotive laser communication component of the other train group. A communication breakpoint is set in the communication ring network structure. When the real-time communication system is normal, the communication breakpoint is disconnected; when the real-time communication system is abnormal, the communication breakpoint is connected.

8. The real-time communication system for heavy-haul railway wagons according to claim 1, wherein It further includes: An angle control module, connected to the locomotive laser communication component, is configured to obtain the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive; According to the position information of the current controlled locomotive, the position information of the adjacent controlled locomotive, the slope information of the current controlled locomotive, and the slope information of the adjacent controlled locomotive, obtain the adjustment angles of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions; According to the adjustment angles of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions, adjust the rotation amplitudes of the locomotive laser communication component of the current controlled locomotive in the horizontal and vertical directions.

9. The real-time communication system for heavy-haul railway wagons according to claim 1, characterized in that, A locomotive laser communication component communicates with an adjacent another locomotive laser communication component and an adjacent vehicle laser transmission module in a link aggregation manner.

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