A railway freight car shunting system and method

Abstract

This invention relates to the field of railway shunting and discloses a railway freight car shunting system and system. The system includes a location identification module and a central processing module. The location identification module is installed on the side of the parked car and includes a first UWB distance marker and a first UWB wireless transmission module. The central processing module includes a second UWB distance marker, a second UWB wireless transmission module, and a display unit. The first and second UWB wireless transmission modules are used to determine the base station and tag roles in the location identification module and the central processing module, respectively, and to pair the location identification module and the central processing module. The first and second UWB distance markers are used to measure and display distance information in real time after the location identification module and the central processing module are successfully paired. Introducing UWB into the field of railway freight car shunting, with the location identification module and the central processing module used in pairs, enables distance measurement in railway freight yards and marshalling yards, improving the system's applicability.

Description

Technical Field

[0001] This invention belongs to the field of rail transit technology, and specifically relates to a railway freight car shunting system and method. Background Technology

[0002] The existing railway system is the main artery of national economic development and plays a backbone role in the comprehensive transportation system. Among them, railway freight cars, as the only important carrier of railway freight transport, are of paramount importance in ensuring the "safety and efficiency" of railway freight transport. Railway freight cars have reached world-leading levels in key technologies such as loading, unloading, shunting, marshalling, and coupling, meeting the needs of the sound and rapid development of the national economy.

[0003] Currently, the main types of freight cars used in my country's railway freight transport are boxcars (P), flatcars (N), open wagons (C), and tank cars (G). Among them, the railway coupler, a crucial component that connects the front and rear of the freight car, is not only a vital link for connecting, traction, and buffering freight cars, but also indispensable for ensuring the rapid assembly and safe transport of freight cars. The "Jan coupler" structure is still the primary design principle. Based on the operational needs of my country's railway freight cars, cargo loading requirements, and freight car materials, the technical safety coupling speed for freight cars during disassembly, assembly, and marshalling operations is specified as 5 km / h (1.4 m / s). Therefore, railway freight yards, hump yards, and marshalling yards are the main operational locations for "loading, unloading, assembly, disassembly, and marshalling" of freight cars. The coupling, loading, unloading, track switching, and marshalling of railway shunting locomotives with car sets parked on the tracks of railway freight yards and marshalling yards are common and indispensable operations in railway freight car operations. Ensuring the safe speed of railway freight cars during coupling is crucial, as it not only affects the railway shunting process and cargo safety but also directly impacts the safety and efficiency of railway shunting personnel. It is a key factor influencing the efficiency and safety of railway shunting operations.

[0004] Furthermore, shunting operations are characterized by dynamic, all-weather operation. The coupling operator in shunting is a high-risk and technically demanding job. Regardless of scorching heat or freezing cold, rain or snow, whether it's a regular holiday or the Spring Festival travel rush, shunting crews must work in shifts outdoors 24 hours a day without interruption. Especially when coupling vehicles, ensuring a safe collision speed during connection requires not only manual methods such as experience or visual inspection, but also... Figure 1As shown, the system dynamically judges the distance to the parked cars ahead based on the speed of the locomotive and rolling stock while they are in motion. This distance needs to be converted into car distances in a timely manner, providing the shunting driver with coupling distances of "10, 5, and 3 cars," corresponding to actual distances of 110m, 55m, and 33m respectively. This allows the driver to adjust the locomotive speed to 15km / h, 10km / h, and 5km / h (safe coupling speeds) to ensure safe coupling. Furthermore, the shunting coupler manually confirms safe coupling when the locomotive and rolling stock reach the coupler position. If any abnormalities occur during coupling, manual adjustments must be made promptly to ensure rapid and safe coupling.

[0005] With technological advancements, there are numerous attempts to utilize UWB technology for auxiliary operations in railway shunting. UWB (Ultra Wideband) is an emerging wireless transmission and payload-free communication technology that uses nanosecond to microsecond-level non-sinusoidal narrow pulses to transmit data. UWB is also widely used in positioning and ranging processes. However, current railway shunting methods rely on UWB ground base stations and the coordinates of multiple tags for positioning. Furthermore, the relative distances between tags need to be calculated through the base station, and then the base station exchanges external data with other systems. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a railway freight car shunting system and method. The method introduces UWB into the field of railway freight car shunting, and the location identification module and the central processing module are used in pairs to improve the convenience and safety of shunting.

[0007] The purpose of this invention is to provide a railway freight car shunting system, including a location identification module and a central processing module. The location identification module is installed on the side of the parked car and includes a first UWB distance indicator and a first UWB wireless transmission module. The central processing module includes a second UWB distance indicator, a second UWB wireless transmission module, and a display unit. The first UWB wireless transmission module and the second UWB wireless transmission module are respectively used to determine the base station and tag roles in the location identification module and the central processing module, and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module. The first UWB distance identifier and the second UWB distance identifier are used to measure distance information in real time after the location identifier module and the central processing module are successfully paired, and transmit the information to the display unit for display through the first UWB wireless transmission module and / or the second UWB wireless transmission module.

[0008] Furthermore, the first ID information and the second ID information are location identifiers with role attributes, wherein the role attributes include base stations and tags, and the first ID information and the second ID information can be interchanged in terms of role attributes.

[0009] Furthermore, determining the roles of the base station and tag in the location identification module and the central processing module, and pairing the location identification module and the central processing module, includes... The UWB wireless transmission module in the location identification module and the central processing module, which acts as the base station, scans and addresses, and sends corresponding ID information with base station attributes. The UWB wireless transmission module in the tag module of the location identification module and the central processing module listens in standby mode, obtains ID information with base station attributes, and feeds back the ID information with tag attributes to the UWB wireless transmission module in the base station module. The first UWB wireless transmission module and the second UWB wireless transmission module each determine whether the ID information of their own module matches the obtained ID information. If they match, the pairing is successful.

[0010] Furthermore, the first UWB distance identifier and the second UWB distance identifier are used to determine distance information in real time after the location identification module and the central processing module have successfully paired. The UWB distance identifier, which acts as the base station in the first and second UWB distance identifiers, transmits data and records the first transmission timestamp. After receiving data, the UWB distance identifier, which acts as a tag in the first and second UWB distance identifiers, records the first receiving timestamp and returns the data after a preset time. At the same time, it records the second sending timestamp. The returned data includes the first receiving timestamp. The UWB distance identifier, acting as a base station, receives the returned data and records the second received timestamp; The UWB distance identifier, which acts as a base station, obtains the data flight distance based on the first transmission timestamp, the first reception timestamp, and the speed of light. The data flight distance is the distance between the location identifier module and the central processing module.

[0011] Furthermore, the location indicator module is set as a magnetic circular light and uses a magnetic base. The magnetic base uses a self-resetting power button. After the location indicator module is magnetically attached to the side of the parking vehicle, the location indicator module automatically turns on the power switch.

[0012] Furthermore, the location identification module displays red after power-on, and green after a communication connection is established between the location identification module and the central processing module.

[0013] Furthermore, the central processing module is designed in the shape of a walkie-talkie, and the display unit is an LCD display used to display the operation content, which includes real-time distance and time.

[0014] Furthermore, the central processing module has buttons on its side indicating different distances for different alert modes. The central processing module also includes a built-in speaker and a default distance voice player. The default playback mode of the default distance voice player is as follows: Starting at 150 meters, play "Ten Cars" three times consecutively; at 70 meters, play "Five Cars" three times consecutively; at 50 meters, play "Three Cars" three times consecutively. The reminder button plays a real-time distance recording each time it is pressed.

[0015] Furthermore, it also includes a horizontal shunting wireless module and an automatic driving positioning module. The first UWB wireless transmission module in the location identification module and the second UWB wireless transmission module in the central processing module are connected to the horizontal shunting wireless module and the automatic driving positioning module respectively through an interface server, and perform information display or exchange.

[0016] Another objective of this invention is to provide a method for shunting railway freight cars, wherein a position marking module is installed on the side of the parked car and includes a first UWB distance marker and a first UWB wireless transmission module; the central processing module includes a second UWB distance marker, a second UWB wireless transmission module, and a display unit; wherein, The first UWB wireless transmission module and the second UWB wireless transmission module are respectively used to determine the base station and tag roles in the location identification module and the central processing module, and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module. The first UWB distance identifier and the second UWB distance identifier are used to measure distance information in real time after the location identifier module and the central processing module are successfully paired, and transmit the information to the display unit for display through the first UWB wireless transmission module and / or the second UWB wireless transmission module.

[0017] Furthermore, the first ID information and the second ID information are location identifiers with role attributes, wherein the role attributes include base stations and tags, and the first ID information and the second ID information can be interchanged in terms of role attributes.

[0018] Furthermore, determining the roles of the base station and tag in the location identification module and the central processing module, and pairing the location identification module and the central processing module, includes... The UWB wireless transmission module in the location identification module and the central processing module, which acts as the base station, scans and addresses, and sends corresponding ID information with base station attributes. The UWB wireless transmission module in the tag module of the location identification module and the central processing module listens in standby mode, obtains ID information with base station attributes, and feeds back the ID information with tag attributes to the UWB wireless transmission module in the base station module. The first UWB wireless transmission module and the second UWB wireless transmission module each determine whether the ID information of their own module matches the obtained ID information. If they match, the pairing is successful.

[0019] Furthermore, the first UWB distance identifier and the second UWB distance identifier are used to determine distance information in real time after the location identification module and the central processing module have successfully paired. The UWB distance identifier, which acts as the base station in the first and second UWB distance identifiers, transmits data and records the first transmission timestamp. After receiving data, the UWB distance identifier, which acts as a tag in the first and second UWB distance identifiers, records the first receiving timestamp and returns the data after a preset time. At the same time, it records the second sending timestamp. The returned data includes the first receiving timestamp. The UWB distance identifier, acting as a base station, receives the returned data and records the second received timestamp; The UWB distance identifier, which acts as a base station, obtains the data flight distance based on the first transmission timestamp, the first reception timestamp, and the speed of light. The data flight distance is the distance between the location identifier module and the central processing module.

[0020] This invention introduces UWB (Ultra Wideband) technology into the field of railway freight car shunting, enabling distance measurement in railway freight yards and marshalling yards. Furthermore, the location identification module and central processing module are used in pairs, resulting in more specialized and professional functions and greater system applicability. Consequently, the shunting system is simpler than existing technologies, significantly reducing power consumption, improving practicality and user experience, lowering time and economic costs, and further resolving the issue of shunting operators accurately determining the distance between the shunting locomotive and the preceding car on the track during shunting. This allows for timely adjustments to the locomotive's speed based on different distances, replacing the traditional manual visual observation method of "fifteen or three cars" in shunting operations. This not only ensures safe coupling distances and speeds but also effectively guarantees locomotive shunting speed, playing a crucial role in improving operational efficiency.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This illustrates a shunting method in the prior art; Figure 2 A schematic diagram of a railway freight car shunting system in this embodiment is shown. Figure 3 A schematic diagram of a railway freight car shunting system operation is shown in this embodiment; Figure 4 A schematic diagram of a central processing module structure in one embodiment of the present invention is shown; Figure 5 A flowchart of the operation of a location identification module in an embodiment of the present invention is shown; Figure 6 A schematic diagram illustrating the pairing process between a central processing module and a location identification module in one embodiment of the present invention is shown. Figure 7 A flowchart of another railway freight car shunting system in this embodiment is shown; Figure 8 A flowchart of the operation of a central processing module in an embodiment of the present invention is shown; Figure 9 A schematic flowchart of a railway freight car shunting method in this embodiment is shown. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 2As shown in the illustration, this invention provides a railway freight car shunting system. The system includes a location identification module and a central processing module. The location identification module is installed on the side of the parked car and includes a first UWB distance identifier and a first UWB wireless transmission module. The central processing module includes a second UWB distance identifier, a second UWB wireless transmission module, and a display unit. The first and second UWB wireless transmission modules are used to determine the base station and tag roles in the location identification module and the central processing module, respectively, and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module. The first and second UWB distance identifiers are used to measure distance information in real time after the location identification module and the central processing module are successfully paired, and transmit this information to the display unit for display via the first and / or second UWB wireless transmission modules. UWB technology has strong anti-interference capabilities and high immunity to interference from other radio systems. It can achieve three-dimensional dynamic positioning and distance measurement with high positioning and distance accuracy. In addition, UWB (Ultra Wideband) technology has a high data transmission rate, capable of achieving speeds of over 100 Mbps. Therefore, the above system introduces UWB into the field of railway freight car shunting, enabling distance measurement in railway freight yards and marshalling yards. Furthermore, the location identification module and the central processing module are used in pairs, making the functions more specialized and professional, and the system's applicability more convenient and efficient. Furthermore, the aforementioned shunting system is simpler in structure than existing technologies, significantly reduces system power consumption, is highly practical, improves user experience, reduces time and economic costs, and further solves the problem of shunting operators accurately grasping the distance between the shunting locomotive and the car parked ahead on the track during shunting operations. This allows shunting operators to adjust the locomotive's speed in a timely manner according to different distances, replacing the traditional manual visual observation method of "15-3 cars" in shunting operations. This not only ensures the safe coupling distance and speed of vehicles, but also effectively guarantees the shunting speed of locomotives, thus improving operational efficiency.

[0026] Specifically, the first ID information and the second ID information are location identifiers with role attributes. The first ID information and the second ID information can be ID information with a base station role or ID information with a tag role, and their roles can be interchanged, meaning the location identification module and the central processing module can switch roles. Once the role attributes of the first ID information and the second ID information are determined, the pairing is successful. This role is the default when the system is powered off, and there are periodic "handshake" signals during use, requiring no other conditions.

[0027] In this embodiment of the invention, the location identification module and the central processing module are respectively equipped with a first UWB wireless transmission module and a second UWB wireless transmission module. The first and second UWB wireless transmission modules are identical wireless transmission modules, and the first and second UWB distance identifiers are also identical distance identifiers. Thus, the location identification module and the central processing module are uniquely bound by an identifier ID, used in a one-to-one group, and different groups do not interfere with each other. The working principle of the UWB distance identifier includes: device A (A) actively sends (TX) data and records the sending timestamp; device B (B) receives the data and records the receiving timestamp; after a certain delay, device B sends data and records the sending timestamp, and device A receives the data and records the receiving timestamp. By calculating the product of the data's flight time in the air and the speed of light, the flight distance of the data can be obtained, thereby determining the relative distance between device A and device B. Device A can be the location identification module and device B can be the central processing module; by reversing roles, device A can also be the central processing module and device B can be the location identification module. Furthermore, the module acting as the tag initiates communication, and the communication data summary includes the time information t1 for sending the data. When the module acting as the base station receives the data, it first records the reception time t2, and then extracts the transmission time from the received information (assuming the base station and tag times are synchronized). Based on the transmission timestamp and reception timestamp, the flight time t = t2 - t1 is calculated, and the distance d from the tag to the base station is calculated as d = (c*t) / 2. In addition, a double-sided two-way ranging (DS-TWR) algorithm is used for verification, eliminating clock drift errors between the tag and the base station through one or more message exchanges, thereby effectively improving the calculation accuracy.

[0028] Considering the on-site operation scenario, transmission distance, and ease of operation, the wireless antenna in the location identification module is built-in, while the wireless antenna in the central processing module is external. The location identification module and the central processing module will utilize the three-dimensional coordinate calculation function based on UWB principles, working in pairs. This eliminates the need to define the roles of the base station and tags, enabling them to determine relative distances to each other. This relative distance determination technology will be fully utilized to accurately measure relative distances during movement, applicable to the accurate measurement of distances between moving locomotives and stationary vehicles in railway shunting operations, ensuring convenience and safety during operations.

[0029] In this embodiment of the invention, if the central processing module is a base station, the distance information is sent to the display unit through the second UWB wireless transmission module; if the central processing module is a tag, the location identification module is sent through the first UWB wireless transmission module, and the second UWB wireless transmission module receives and transmits it to the display unit for display.

[0030] like Figure 3 As shown, the location marker module is a magnetic circular light type, with a first UWB distance marker built into the light, and uses a magnetic base. Furthermore, the magnetic base uses a self-resetting power button; after the location marker module is magnetically attached to the side of the parking vehicle, the location marker module automatically turns on. Figure 4 As shown, the central processing module is designed in the shape of a walkie-talkie and is held by the shunting foreman. It contains a second UWB distance indicator, and its external display unit is an LCD (Liquid Crystal Display) screen. The LCD screen displays the operational information, including real-time distance and time. In the diagram, L represents length, H represents height, and the diameter of the intercom microphone is also shown. Furthermore, considering the shunting foreman's visibility and ease of confirming the work track, the position indicator module displays red upon power-on, meaning it shows red upon power-on. This red display can be set to last for 3 seconds. As the shunting locomotive moves, once the position indicator module establishes a communication connection with the central processing module, it displays green, indicating that real-time distance measurement has begun and the distance will be displayed and announced as needed. This green display can also be set to last for 3 seconds. After the work is completed, when the shunting operator removes the magnetic position indicator module from the stationary car, the module immediately shuts off its power, stopping the current operation. To ensure work time and save power consumption, the central processing module automatically enters standby mode 3 minutes after communication with the position indicator module is disconnected. The aforementioned light display time and communication disconnection notification time are not limited to 3 seconds or 3 minutes; other time settings are applicable to this invention. Furthermore, the position indicator module also performs a self-test upon power-on. Figure 5 As shown, the workflow of the location identification module is as follows: Step S1: Magnetic attraction begins. Determine if the power is turned on automatically. If the power is on, proceed to step S2. Otherwise, the position marker module is faulty, and an alarm is triggered.

[0031] Step S2: Start self-test and determine if the self-test is normal. If the location identification module self-test is normal, proceed to step S3. Otherwise, if the location identification module is faulty, an alarm will be triggered and alarm exception handling will be performed.

[0032] Step S3: The location marker module displays in red; Step S4: Determine whether a communication connection has been established between the location identification module and the central processing module. If established, proceed to step S5; otherwise, there is a fault in either the location identification module or the central processing module.

[0033] Step S5: The location indicator module displays green, indicating that the shunting system is working properly and can broadcast the distance.

[0034] Step S6: Under magnetic attraction, the position marker module is powered off, and the operation ends.

[0035] The location indicator module can dynamically provide sound and color alerts based on the actual distance. For example, it can flash green for 3 seconds and emit an alarm when the distance is 50m. It can also provide abnormal status alerts when the distance exceeds the system's operating range. Furthermore, it can be customized according to user needs. This not only solves the functional requirements of normal use but also provides safety measures in case of abnormalities caused by operators.

[0036] In embodiments of the present invention, such as Figure 6 , 7 As shown, both the central processing module and the location identification module, whether used as a base station module or a tag module, perform self-tests after power-on. If the self-test is normal, the location identification module and the central processing module are paired. Otherwise, if the base station module's self-test is abnormal, the base station module is faulty and fault handling is performed. Similarly, if the tag module's self-test is abnormal, the tag module is faulty and fault handling is performed.

[0037] Furthermore, pairing the location identification module and the central processing module includes, First, the UWB wireless transmission module, which acts as the base station module, scans for addresses and sends ID information, which is recorded as the base station ID information. Secondly, the UWB wireless transmission module, which serves as the tag module, listens in standby mode to obtain the base station ID information and feeds back the tag ID information to the UWB wireless transmission module of the base station module. Preferably, the core modules of both the first and second UWB wireless transmission modules use the dw1000 (an ultra-wideband wireless communication chip) module.

[0038] Then, the UWB wireless transmission modules of the base station module and the tag module respectively determine whether the base station ID information and tag ID information meet the requirements. If they meet the requirements, pairing is successful; otherwise, pairing fails, and the tag module's UWB wireless transmission module returns to continue listening, and the base station module's UWB wireless transmission module returns to continue listening and scanning for addressing. Meeting the requirements means that once it is confirmed that the base station ID information and tag ID information correspond to one base station and one tag, pairing is successful. The location identification module and the central processing module are used only in pairs, which not only simplifies the system complexity in current railway UWB technology applications but also makes the functions more specialized and professional. In particular, by eliminating ground base stations and Wi-Fi, and fully utilizing UWB's relative coordinate determination of relative distance functions, system power consumption and size are significantly reduced, thereby greatly improving system convenience, portability, practicality, and user experience.

[0039] In this embodiment of the invention, a reminder mode button is provided on the side of the central processing module, and the central processing module has a built-in external speaker and a default distance voice player. The reminder mode button includes reminder methods such as voice, display, and light color prompts. It can be set to provide a voice reminder of the real-time distance with a single press, a voice and light color prompt with two consecutive presses, a display and light color prompt with three consecutive presses, etc., but is not limited to these. Setting corresponding prompts based on the number of times other buttons are pressed is also applicable to this invention. Furthermore, the light color prompt refers to the central processing module sending a light color prompt command to the location identification module, and the location identification module displaying a flashing green light as a light color prompt.

[0040] For example, such as Figure 8 As shown, the workflow of the central processing module is as follows: Step S11: Enter the ranging working state; Step S12: Determine if the distance measurement range has been entered. If it has, play the default distance audio; otherwise, return to step S11. The default playback method is as follows: Starting at 150m, play "Ten Cars" three times consecutively; at 70m, play "Five Cars" three times consecutively; at 50m, play "Three Cars" three times consecutively. However, the default distance and number of plays can be set, not limited to 150m, 70m, 50m and the corresponding three times, but can also be 140m, 70m, 40m and the corresponding two times, four times, etc. The default distance, playback timing and number of plays can be configured according to the specific actual situation on site.

[0041] Step S13: Determine whether the shunting chief has pressed the button via the reminder method of the central processing module. If the button is pressed, play the real-time distance once for each press and return to step S12; otherwise, the central processing module ends its work.

[0042] The shunting system also includes a horizontal shunting wireless module and an automatic driving positioning module. These modules are functional modules within the locomotive control system. Locomotive positioning and tracking are achieved through ground transponders and track circuits, GPS positioning, and WLAN, respectively. The position identification module and the first and second UWB wireless transmission modules in the central processing module communicate with the horizontal shunting wireless module and the automatic driving positioning module via an interface server. This achieves seamless integration and connection between the position identification module, the central processing module, and the level radio. The automatic driving positioning module enables shunting locomotives to be located and tracked during operations, playing a crucial role in improving the safety and utilization rate of shunting operations and enhancing locomotive dispatching and command.

[0043] like Figure 9As shown in the figure, this embodiment of the invention also introduces a railway freight car shunting method based on the above system, wherein a location identification module is installed on the side of the parked car and includes a first UWB distance identifier and a first UWB wireless transmission module, and a central processing module includes a second UWB distance identifier, a second UWB wireless transmission module, and a display unit; the method includes, firstly, the first UWB wireless transmission module and the second UWB wireless transmission module are respectively used to determine the base station and tag roles in the location identification module and the central processing module and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module; then, the first UWB distance identifier and the second UWB distance identifier are used to measure the distance information in real time after the location identification module and the central processing module are successfully paired, and transmit the distance information to the display unit for display through the first UWB wireless transmission module and / or the second UWB wireless transmission module.

[0044] In this embodiment of the invention, the first ID information and the second ID information are location identifiers with role attributes, wherein the role attributes include base stations and tags, and the first ID information and the second ID information can be interchanged in terms of role attributes.

[0045] In this embodiment of the invention, determining the roles of the base station and the tag in the location identification module and the central processing module, and pairing the location identification module and the central processing module, includes: The UWB wireless transmission module, which acts as a base station in the location identification module and the central processing module, scans and addresses the location and sends the corresponding ID information. The UWB wireless transmission module in the tag module of the location identification module and the central processing module listens in standby mode, obtains the ID information in the base station module, and feeds back the corresponding ID information to the UWB wireless transmission module in the base station module. The first UWB wireless transmission module and the second UWB wireless transmission module each determine whether the ID information of their own module matches the obtained ID information. If they match, the pairing is successful.

[0046] In this embodiment of the invention, the first UWB distance identifier and the second UWB distance identifier are used to measure distance information in real time after the location identifier module and the central processing module have been successfully paired. The UWB distance identifier, which acts as the base station in the first and second UWB distance identifiers, transmits data and records the first transmission timestamp. After receiving data, the UWB distance identifier, which acts as a tag in the first and second UWB distance identifiers, records the first receiving timestamp and returns the data after a preset time. At the same time, it records the second sending timestamp. The returned data includes the first receiving timestamp. The UWB distance identifier, acting as a base station, receives the returned data and records the second received timestamp; The UWB distance identifier, which acts as a base station, obtains the data flight distance based on the first transmission timestamp, the first reception timestamp, and the speed of light. The data flight distance is the distance between the location identifier module and the central processing module.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A railway freight car shunting system, characterized in that, The system includes a location identification module and a central processing module. The location identification module is installed on the side of the parking vehicle and includes a first UWB distance indicator and a first UWB wireless transmission module. The central processing module includes a second UWB distance indicator, a second UWB wireless transmission module, and a display unit. The first UWB wireless transmission module and the second UWB wireless transmission module are respectively used to determine the base station and tag roles in the location identification module and the central processing module, and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module. The first UWB distance identifier and the second UWB distance identifier are used to measure distance information in real time after the location identifier module and the central processing module are successfully paired, and transmit the information to the display unit for display through the first UWB wireless transmission module and / or the second UWB wireless transmission module.

2. The railway freight car shunting system according to claim 1, characterized in that, The first ID information and the second ID information are location identifiers with role attributes, wherein the role attributes include base stations and tags, and the first ID information and the second ID information can be interchanged in terms of role attributes.

3. The railway freight car shunting system according to claim 2, characterized in that, Determining the roles of base stations and tags in the location identification module and the central processing module, and pairing the location identification module and the central processing module, includes... The UWB wireless transmission module in the location identification module and the central processing module, which acts as a base station, scans and addresses, and sends corresponding ID information with base station attributes. The UWB wireless transmission module in the tag module of the location identification module and the central processing module listens in standby mode, obtains ID information with base station attributes, and feeds back the ID information with tag attributes to the UWB wireless transmission module in the base station module. The first UWB wireless transmission module and the second UWB wireless transmission module each determine whether the ID information of their own module matches the obtained ID information. If they match, the pairing is successful.

4. The railway freight car shunting system according to claim 2, characterized in that, The first UWB distance identifier and the second UWB distance identifier are used to determine distance information in real time after the location identifier module and the central processing module have successfully paired. The UWB distance identifier, which acts as the base station in the first and second UWB distance identifiers, transmits data and records the first transmission timestamp. After receiving data, the UWB distance identifier, which acts as a tag in the first and second UWB distance identifiers, records the first receiving timestamp and returns the data after a preset time. At the same time, it records the second sending timestamp. The returned data includes the first receiving timestamp. The UWB distance identifier, acting as a base station, receives the returned data and records the second reception timestamp; The UWB distance identifier, which acts as a base station, obtains the data flight distance based on the first transmission timestamp, the first reception timestamp, and the speed of light. The data flight distance is the distance between the location identifier module and the central processing module.

5. The railway freight car shunting system according to claim 1, characterized in that, The location indicator module is a magnetic circular light with a magnetic base. The magnetic base has a self-resetting power button. After the location indicator module is magnetically attached to the side of the parking vehicle, the location indicator module automatically turns on the power switch.

6. The railway freight car shunting system according to claim 5, characterized in that, The location identification module displays red after power-on. After a communication connection is established between the location identification module and the central processing module, the location identification module displays green.

7. The railway freight car shunting system according to claim 5, characterized in that, The central processing module is designed in the shape of a walkie-talkie, and the display unit is an LCD display. The LCD display is used to display the work content, which includes real-time distance and time.

8. The railway freight car shunting system according to claim 7, characterized in that, The central processing module has buttons on its side indicating different distances for different alert modes. It also has a built-in speaker and a default distance voice player. The default playback mode for the default distance voice player is as follows: Starting at 150 meters, play "Ten Cars" three times consecutively; at 70 meters, play "Five Cars" three times consecutively; at 50 meters, play "Three Cars" three times consecutively. The reminder button plays a real-time distance recording each time it is pressed.

9. The railway freight car shunting system according to claim 1, characterized in that, It also includes a horizontal shunting wireless module and an automatic driving positioning module. The first UWB wireless transmission module in the location identification module and the second UWB wireless transmission module in the central processing module are connected to the horizontal shunting wireless module and the automatic driving positioning module respectively through the interface server, and perform information display or exchange.

10. A method for shunting railway freight cars, characterized in that, The location identification module is installed on the side of the parked vehicle and includes a first UWB distance indicator and a first UWB wireless transmission module. The central processing module includes a second UWB distance indicator, a second UWB wireless transmission module, and a display unit. The first UWB wireless transmission module and the second UWB wireless transmission module are respectively used to determine the base station and tag roles in the location identification module and the central processing module, and to pair the location identification module and the central processing module based on the first ID information of the location identification module and the second ID information of the central processing module. The first UWB distance identifier and the second UWB distance identifier are used to measure distance information in real time after the location identifier module and the central processing module are successfully paired, and transmit the information to the display unit for display through the first UWB wireless transmission module and / or the second UWB wireless transmission module.

11. The railway freight car shunting method according to claim 10, characterized in that, The first ID information and the second ID information are location identifiers with role attributes, wherein the role attributes include base stations and tags, and the first ID information and the second ID information can be interchanged in terms of role attributes.

12. The railway freight car shunting method according to claim 11, characterized in that, Determining the roles of base stations and tags in the location identification module and the central processing module, and pairing the location identification module and the central processing module, includes... The UWB wireless transmission module in the location identification module and the central processing module, which acts as a base station, scans and addresses, and sends corresponding ID information with base station attributes. The UWB wireless transmission module in the tag module of the location identification module and the central processing module listens in standby mode, obtains ID information with base station attributes, and feeds back the ID information with tag attributes to the UWB wireless transmission module in the base station module. The first UWB wireless transmission module and the second UWB wireless transmission module each determine whether the ID information of their own module matches the obtained ID information. If they match, the pairing is successful.

13. The railway freight car shunting method according to claim 12, characterized in that, The first UWB distance identifier and the second UWB distance identifier are used to determine distance information in real time after the location identifier module and the central processing module have successfully paired. The UWB distance identifier, which acts as the base station in the first and second UWB distance identifiers, transmits data and records the first transmission timestamp. After receiving data, the UWB distance identifier, which acts as a tag in the first and second UWB distance identifiers, records the first receiving timestamp and returns the data after a preset time. At the same time, it records the second sending timestamp. The returned data includes the first receiving timestamp. The UWB distance identifier, acting as a base station, receives the returned data and records the second reception timestamp; The UWB distance identifier, which acts as a base station, obtains the data flight distance based on the first transmission timestamp, the first reception timestamp, and the speed of light. The data flight distance is the distance between the location identifier module and the central processing module.

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