Railway vehicle wireless train-ground data transmission device

Abstract

The utility model provides a railway vehicle wireless train-ground data transmission device, relates to the technical field of railway communication, and can improve railway communication quality and positioning accuracy. The railway vehicle wireless train-ground data transmission device comprises a Beidou data acquisition module and a Beidou 4G combined antenna. The Beidou data acquisition module is arranged in a carriage of the railway vehicle, the Beidou 4G combined antenna is arranged at the top of the carriage of the railway vehicle, and the Beidou data acquisition module is connected with the Beidou 4G combined antenna; the Beidou 4G combined antenna receives a positioning signal of a Beidou satellite and sends the positioning signal to the Beidou data acquisition module; the Beidou data acquisition module positions the position of a railway vehicle based on the received positioning signal and sends the position information to the Beidou 4G combined antenna, and the Beidou 4G combined antenna sends the position information to a ground server through a 4G network.

Description

Technical Field

[0001] This utility model relates to the field of railway communication technology, specifically to a wireless vehicle-to-ground data transmission device for railway vehicles. Background Technology

[0002] With the rapid expansion of China's high-speed railway network and the continuous increase in train operating speed, the demand for the quality and timeliness of train-to-ground communication is also growing. In traditional railway train-to-ground communication systems, GPRS and GPS are two key technical components that work together to achieve real-time monitoring and dispatching of trains.

[0003] However, during peak hours, GPRS networks may experience congestion due to surges in data traffic, potentially leading to slower transmission speeds and increased latency. Furthermore, GPRS service coverage is limited, and some remote areas may not have access to consistently stable service. Because GPRS uses a shared channel mechanism, its upload and download speeds, as well as overall service quality, may fluctuate, making it difficult to maintain consistency.

[0004] Furthermore, GPS satellite signals are susceptible to interference from buildings, terrain, and weather conditions during transmission, especially in tunnels or densely built-up urban areas, where signal reception quality can be significantly degraded. Additionally, due to multipath effects caused by reflection and refraction, signals may reach the receiver multiple times, potentially reducing positioning accuracy. Moreover, if devices operating for extended periods are not calibrated in a timely manner, clock drift errors can also affect the accuracy of location information.

[0005] As can be seen from the above, traditional railway vehicle-to-ground communication mainly relies on fixed lines and limited communication infrastructure, which to some extent limits the data transmission rate and bandwidth, making it difficult to meet the growing demand for informatization and automation, especially in high-speed moving environments. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a wireless vehicle-to-ground data transmission device for railway vehicles.

[0007] In the first aspect, a wireless vehicle-to-ground data transmission device for railway vehicles is provided, including: a Beidou data acquisition module and a Beidou 4G combined antenna;

[0008] The BeiDou data acquisition module is installed inside the railway vehicle carriage, and the BeiDou 4G combined antenna is installed on the top of the railway vehicle carriage. The BeiDou data acquisition module is connected to the BeiDou 4G combined antenna.

[0009] The BeiDou 4G combined antenna receives positioning signals from BeiDou satellites and sends these signals to the BeiDou data acquisition module. The BeiDou data acquisition module locates the position of the railway vehicle based on the received positioning signals and sends the location information to the BeiDou 4G combined antenna. The BeiDou 4G combined antenna then sends the location information to the ground server via the 4G network.

[0010] Furthermore, the BeiDou 4G combined antenna includes a first port and a second port;

[0011] The first port receives the positioning signal and sends it to the BeiDou data acquisition module.

[0012] The second port receives location information and sends it to the ground server via the 4G network.

[0013] The BeiDou 4G combined antenna is connected to the BeiDou data acquisition module through the first and second ports.

[0014] Furthermore, the BeiDou data acquisition module includes: a BeiDou module, a 4G interface, a BeiDou interface, a JE interface, a JWD interface, a power supply, a power interface, and a SIM card slot.

[0015] Furthermore, the BeiDou interface of the BeiDou data acquisition module is connected to the first port of the BeiDou 4G combined antenna, and the 4G interface of the BeiDou data acquisition module is connected to the second port of the BeiDou 4G combined antenna.

[0016] Furthermore, the power interfaces include a 12V power interface and a 110V power interface.

[0017] Furthermore, it also includes: a carriage-level main unit for BeiDou data acquisition, which is installed inside the carriage of a railway vehicle and plugged into the carriage-level main unit.

[0018] Furthermore, it also includes: a WLAN board installed in the carriage-level host, the WLAN board including: a WLAN interface, a power interface, indicator lights, and a JT interface, the WLAN board being plugged into the carriage-level host. Furthermore, it also includes: a WLAN antenna, the WLAN antenna being installed on the roof of the railway vehicle carriage, the WLAN antenna being connected to the WLAN interface of the WLAN board.

[0019] Furthermore, it also includes: a display screen, which is connected to the BeiDou data acquisition module.

[0020] Furthermore, it also includes: an antenna base, which is fixed to the top of the railway vehicle carriage, and the Beidou 4G combined antenna is installed on the antenna base.

[0021] The railway vehicle wireless vehicle-to-ground data transmission device provided by this utility model can receive positioning signals from Beidou satellites through a Beidou 4G combined antenna to obtain more accurate location information. Furthermore, the Beidou 4G combined antenna can also achieve 4G data transmission with a ground server, improving the real-time performance and efficiency of data transmission. Attached Figure Description

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

[0023] Figure 1 A schematic diagram of the structure of a wireless vehicle-to-ground data transmission device for railway vehicles provided by this utility model;

[0024] Figure 2A A schematic diagram of the structure of a Beidou 4G combined antenna provided by this utility model;

[0025] Figure 2B A schematic diagram of another Beidou 4G combined antenna provided by this utility model;

[0026] Figure 2C A schematic diagram of another Beidou 4G combined antenna provided by this utility model;

[0027] Figure 3 A schematic diagram of the panel structure of a Beidou data acquisition module provided by this utility model;

[0028] Figure 4 A schematic diagram of the structure of a module box cover for a Beidou data acquisition module provided by this utility model;

[0029] Figure 5 A schematic diagram of the structure of a module box for a Beidou data acquisition module provided by this utility model;

[0030] Figure 6 A schematic diagram of the structure of a Beidou data acquisition module provided by this utility model;

[0031] Figure 7 A schematic diagram of the structure of a carriage-level main unit provided by this utility model;

[0032] Figure 8 A schematic diagram of the structure of another wireless vehicle-to-ground data transmission device for railway vehicles provided by this utility model. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in some embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on some embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings herein are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. It should be noted that the acquisition, storage, use, and processing of data in the present invention comply with the relevant provisions of applicable laws and regulations.

[0035] Railway rolling stock is an indispensable core asset in the railway transportation system, and its safety directly affects the stability and efficiency of the entire transportation network. To ensure the safe operation of railway rolling stock, a comprehensive and advanced safety monitoring system must be installed to collect and analyze train operation data in real time. Railway rolling stock plays a crucial role in the transportation system, involving multiple aspects such as vehicle utilization, comprehensive preparation, and overall maintenance.

[0036] Therefore, to improve train operation safety, railway vehicles have been equipped with multiple safety assurance systems, the most critical of which is the railway vehicle operation safety monitoring system, abbreviated as the "5T" system. This system consists of five core components:

[0037] 1. Infrared Axle Temperature Detection and Intelligent Tracking System (THDS): Used to monitor train axle temperature and prevent hot axle failure.

[0038] 2. Ground Safety Monitoring System for Truck Operation Status (TPDS): Monitors the operating status of trucks in real time to ensure the safety of cargo transportation.

[0039] 3. Trackside Acoustic Diagnostic System (TADS) for Early Faults of Rolling Bearings in Freight Cars: This system uses acoustic diagnostic technology to detect potential faults in rolling bearings in advance.

[0040] 4. Truck Operation Fault Dynamic Image Detection System (TFDS): Utilizes dynamic image analysis to detect faults in truck operation.

[0041] 5. Bus Operation Safety Monitoring System (TCDS): Real-time monitoring, diagnosis and alarm of key components of the bus, such as power supply system, air conditioning, power supply, doors, fire alarm, axle temperature, braking system and bogie.

[0042] The TCDS system is crucial for railway transportation safety. Through onboard detection equipment, the TCDS system provides comprehensive status monitoring of passenger trains in operation and transmits data to the ground monitoring center in real time via wireless communication technology. This system not only ensures real-time monitoring and comprehensive analysis of train status but also focuses on preventing accidents such as hot axles and fires, as well as failures in critical components such as the running gear, braking system, power supply, electrical systems, and air conditioning systems. The core components of the TCDS system include:

[0043] TCDS Host: As the core processing unit of the system, the TCDS host integrates key components such as GPRS boards, CPU boards, and motherboards. These components work together to collect, process, and transmit data. The host is securely installed in the train's electrical distribution box to ensure stable operation and facilitate maintenance.

[0044] GPS antenna: Responsible for receiving Global Positioning System (GPS) signals to provide the train with accurate geographical location information. The GPS antenna is mounted on the roof of the train to ensure unobstructed signal reception, thereby enabling real-time monitoring of the train's position.

[0045] GPRS antenna: Used to enable wireless data transmission between the train and the ground control center. The GPRS antenna is also installed on the outside of the distribution box to ensure the stability and coverage of data transmission.

[0046] WLAN antenna: Used for wireless local area network communication inside the train, supporting the download and transmission of process data. The WLAN antenna is also installed on the roof to provide wide wireless coverage.

[0047] Feeder: The feeder that connects each antenna to the main unit is responsible for transmitting signals and power, ensuring effective communication between different parts of the system.

[0048] The GPS antenna is a positioning antenna, providing both positioning and timing functions. The GPRS and WLAN antennas are data transmission antennas; the GPRS antenna is used for real-time data transmission, and the WLAN antenna is used for process data download. These three types of antennas are installed separately.

[0049] With the rapid expansion of China's high-speed railway network and the continuous increase in train operating speeds, the demand for high-quality and timely train-to-ground communication is also growing. However, the GPS antenna in the aforementioned TCDS host may have the following problems when providing positioning services:

[0050] 1. Signal obstruction problem: GPS signals may be interfered with by buildings, terrain and weather conditions, especially in tunnels or urban areas with tall buildings. These obstacles can significantly reduce the quality of signal reception and affect the accuracy of positioning.

[0051] 2. Multipath effect: In complex environments, GPS signals may be reflected and refracted multiple times before reaching the receiver. This multipath propagation may cause signal confusion, thereby reducing positioning accuracy.

[0052] 3. Time synchronization error: GPS systems rely on precise time synchronization to determine location. If the receiver's clock drifts and is not calibrated in time, the accuracy of the location information will be affected.

[0053] Similarly, GPRS antennas also have some limitations in data transmission:

[0054] 1. Network congestion: During peak hours, the GPRS network may become congested due to a surge in data traffic, which can lead to a decrease in data transmission speed and an increase in communication delay.

[0055] 2. Service area limitations: GPRS coverage may not be extensive enough in some remote areas, where stable and reliable service may not be available.

[0056] 3. Service quality fluctuations: Because the GPRS network uses a shared channel, its upload and download speeds and overall service quality may fluctuate due to changes in network conditions, making it difficult to maintain consistency.

[0057] As the above shows, traditional railway vehicle-to-ground communication systems mainly rely on fixed lines and limited communication infrastructure, which limits the speed and capacity of data transmission. With the increasing demands for informatization and automation in the railway transportation industry, especially in the dynamic environment of high-speed train operation, the shortcomings of these traditional communication methods are becoming increasingly apparent.

[0058] Based on this, the present invention provides a wireless vehicle-to-ground data transmission device for railway vehicles, such as... Figure 1 As shown, the railway vehicle wireless vehicle-to-ground data transmission device includes: a Beidou data acquisition module 101 and a Beidou 4G combined antenna 102;

[0059] The Beidou data acquisition module 101 is installed inside the carriage of the railway vehicle, and the Beidou 4G combined antenna 102 is installed on the top of the carriage of the railway vehicle. The Beidou data acquisition module 101 is connected to the Beidou 4G combined antenna 102.

[0060] The Beidou 4G combined antenna 102 receives the positioning signal from the Beidou satellite and sends the positioning signal to the Beidou data acquisition module 101; the Beidou data acquisition module 101 locates the position of the railway vehicle based on the received positioning signal and sends the position information to the Beidou 4G combined antenna 102, which then sends the position information to the ground server via the 4G network.

[0061] The railway vehicle wireless vehicle-to-ground data transmission device provided by this utility model can receive positioning signals from Beidou satellites through the Beidou 4G combined antenna 102 to obtain more accurate location information. Furthermore, the Beidou 4G combined antenna 102 can also realize 4G data transmission with a ground server, improving the real-time performance and efficiency of data transmission.

[0062] In some embodiments, the BeiDou 4G combined antenna 102 includes a first port and a second port. The first port receives a positioning signal and sends the positioning signal to the BeiDou data acquisition module 101; the second port receives location information and sends the location information to the ground server through the 4G network.

[0063] The Beidou 4G combined antenna 102 is connected to the Beidou data acquisition module 101 through the first port and the second port.

[0064] Specifically, the BeiDou 4G combined antenna 102 is a dual-port combined antenna. The first port is used to receive and transmit BeiDou satellite signals, and the second port is used for 4G network communication, supporting 4G mobile communication frequency bands. For example, the BeiDou 4G combined antenna 102 can be an omnidirectional antenna, with a weight of less than 1 kg. The communication operating frequency bands of the BeiDou 4G combined antenna 102 can meet the requirements of 694–960 MHz and 1710–2700 MHz.

[0065] like Figures 2A-2C The diagram shown is a structural schematic of the BeiDou 4G combined antenna 102 provided by this utility model. As shown... Figure 2A As shown, the BeiDou 4G combined antenna 102 includes: a housing 201, a base 202, a first port 203, and a second port 204. Figure 2B As shown, screw holes 205 can also be provided on the base 202 of the Beidou 4G combined antenna 102 to fix the Beidou 4G combined antenna 102. Figure 2CAs shown, a textured waterproof rubber pad 206 is also provided under the base 202 of the Beidou 4G combined antenna 102, which can prevent water from penetrating into the interior of the Beidou 4G combined antenna 102 and also increase friction to prevent the Beidou 4G combined antenna 102 from sliding.

[0066] This dual-port design improves the integration and efficiency of the BeiDou 4G antenna, and the omnidirectional antenna can transmit or receive signals uniformly in all directions, helping railway vehicles maintain stable communication connections at high speeds, especially in varying terrain and weather conditions. Furthermore, controlling the antenna weight helps reduce the overall weight of the railway vehicle, while also facilitating installation and maintenance. By setting the communication operating frequency band of the BeiDou 4G antenna, it can adapt to different communication needs, including 4G communication and BeiDou satellite signal reception.

[0067] In some embodiments, the BeiDou data acquisition module 101 includes: a BeiDou module, a 4G interface, a BeiDou interface, a JE interface, a JWD interface, a power supply, a power interface, and a SIM card slot; the BeiDou module is used to determine the location information of railway vehicles based on the positioning signals of BeiDou satellites; the power supply is used to provide power to the BeiDou data acquisition module; and the SIM card slot is used to install a SIM card.

[0068] The BeiDou data acquisition module 101 has its BeiDou interface connected to the first port of the BeiDou 4G combined antenna 102, and its 4G interface connected to the second port of the BeiDou 4G combined antenna 102. The power interfaces include a 12V power interface and a 110V power interface.

[0069] Specifically, such as Figure 3 The diagram shown is a structural schematic of the panel of a Beidou data acquisition module 101 provided by this utility model, including: panel 1, indicator lights 2, Phillips head countersunk screws (specifically M2.5 Phillips head countersunk screws, a total of 8) 3, 4G interface 4, Beidou (BDS) interface 5, JE interface 6, blank sign handle 7, 12V power interface 8, JWD interface 9, switch 10, 110V power interface 11, and BD-1 sign handle 12. It should be noted that... Figure 3 This is only a schematic diagram of the panel of the Beidou data acquisition module 101, showing only some components of the Beidou data acquisition module 101, such as the power supply and the Beidou module itself.

[0070] The indicator lights 2, including D1, D2, D3, and D4, can display different operating statuses of the BeiDou data acquisition module 101. The BeiDou interface 5 is used to connect to the first port of the BeiDou 4G combined antenna, and the 4G interface 4 is used to connect to the second port of the BeiDou 4G combined antenna. The 12V power interface 8 supports the supply of 12V power to the BeiDou data acquisition module 101. The switch 10 controls the power supply of the BeiDou data acquisition module 101, allowing users to manually turn the module on or off. The 110V power interface 11 supports the supply of 110V power to the BeiDou data acquisition module 101. Furthermore, Figure 3 The diagram also shows the length and width of the panel of the BeiDou data acquisition module 101. Specifically, the total length of the BeiDou data acquisition module 101 is 262mm, the length from the center line of the top nut to the center line of the bottom nut is 255.8mm, and the width is 35.5mm.

[0071] like Figure 4 The diagram shows a structural schematic of the module cover of a Beidou data acquisition module 101 provided by this utility model. The module cover of the Beidou data acquisition module 101 is a 6U module cover, including: a 6U module cover 13, a hexagonal thin nut (specifically, an M2.5 hexagonal thin nut) 14, Phillips head pan screws (specifically, M2.5 Phillips head pan screws, 20 in total) 15, a Beidou data acquisition module (BD-1 board) 16 (i.e., the Beidou data acquisition module 101 itself), an error prevention device (DB9) 17, Phillips head pan screws (specifically, M2.5 Phillips head pan screws, 3 in total) 18, and a Phillips head non-detachable device 19. In one embodiment, Figure 5 The module box cover is 244.1mm long and 165.3mm wide.

[0072] like Figure 5 The diagram shows a structural schematic of the module box of a Beidou data acquisition module 101 provided by this utility model. The module box of the Beidou data acquisition module 101 corresponds to the module box cover and is a 6U module box, including: a 6U module box fixing block 20, a 6U module box 21, a 6U module box guide rail 22, slotted cylindrical head screws (specifically slotted cylindrical head screws M3, a total of 10) 23, and cross-slot pan head screws (specifically cross-slot pan head screws M2.5, a total of 10) 24.

[0073] like Figure 6 The diagram shown is an overall structural diagram of a BeiDou data acquisition module 101 provided by this utility model, including a panel 301, a module cover 302, and a module box 303. Furthermore, it also includes components such as a power supply and a BeiDou module.

[0074] For example, the Beidou data acquisition module 101, also known as the BD board, adopts a 6U plug-in size and a front panel width of 7HP. The power supply can be DC 110V, employing an isolated power supply design, with a power consumption of less than 10W. A fast-fuse fuse can be installed at the power supply input. Overcurrent protection is required when the power is on. The overcurrent parameter of the fuse can be selected according to 1.5-2 times the actual operating current, so that it can promptly segment the power supply and isolate the internal and external circuits in case of overcurrent or short circuit in the Beidou data acquisition module 101. The height of the components on the back of the Beidou data acquisition module 101 does not exceed 1.2mm, and the PCB thickness can be 1.6mm.

[0075] In some embodiments, the JE and JWD interfaces of the Beidou data acquisition module 101 can be connected to a backend device to transmit the acquired relevant data to the backend device.

[0076] In some embodiments, the BeiDou data acquisition module 101 further includes an Ethernet interface, enabling the BeiDou data acquisition module 101 to transmit data via Ethernet (e.g., Gigabit Ethernet).

[0077] In this way, the BeiDou data acquisition module 101 can provide high-precision location information for railway vehicles through the positioning signals of BeiDou satellites, which is helpful for real-time monitoring and scheduling of railway vehicles. Furthermore, the power supply adopts a DC 110V isolated power supply design to ensure the stable operation of the BeiDou data acquisition module, while the low-power design contributes to energy saving. In addition, overcurrent protection is achieved by setting a fast-acting fuse at the power supply input, improving system safety and preventing equipment damage caused by overcurrent or short circuits. The Ethernet interface allows the BeiDou data acquisition module to display real-time status information for monitoring and maintenance by staff.

[0078] In some embodiments, the BeiDou data acquisition module 101 is also used to transmit the acquired data to a ground server via a BeiDou 4G combined antenna.

[0079] The above transmission method is a transparent transmission mode, which means that the Beidou data acquisition module 101 does not change the content of the data during the data transmission process, but simply transmits the data to the ground server through the Beidou 4G combined antenna.

[0080] In some embodiments, the BeiDou data acquisition module 101 can also perform self-testing to monitor its own operating status.

[0081] For example, the BeiDou data acquisition module 101 can perform self-detection by responding to polling signals sent by other devices. The polling signal is used to obtain the operating status of the BeiDou data acquisition module 101. After receiving the polling signal, the BeiDou data acquisition module 101 returns a feedback signal, which other devices can use to determine the operating status of the BeiDou data acquisition module 101.

[0082] In this way, through self-testing, the BeiDou data acquisition module 101 can promptly detect and report potential faults or anomalies, thereby improving the reliability of the entire system. Real-time monitoring of the BeiDou data acquisition module 101's operating status also enables maintenance personnel to quickly identify problems, reducing troubleshooting time and improving maintenance efficiency.

[0083] In some embodiments, the SIM card slot in the Beidou data acquisition module 101 adopts a locking design to prevent the SIM card from accidentally falling out during transportation or use, thus ensuring the stability of communication.

[0084] In some embodiments, the railway vehicle wireless vehicle-to-ground data transmission device further includes: a carriage-level host installed inside the carriage of the railway vehicle, with the Beidou data acquisition module 101 plugged into the carriage-level host.

[0085] Specifically, such as Figure 7 The diagram shown is a structural schematic of a carriage-level main unit provided by this utility model. The Beidou data acquisition module 101 exists as an independent board and is integrated into the carriage-level main unit (also known as the carriage-level safety monitoring main unit) of the railway vehicle via a plug-in / plug-out interface. Furthermore, Figure 7 The carriage-level main unit also includes: WLAN board 103, XS board 401, ZX2 board 402, ZX1 board 403, ZD2 board 404, FM board 405, WG2 board 406, P1C2 board 407, P1C1 board 408, and blank boards. It should be noted that each carriage in a railway vehicle corresponds to one carriage-level main unit, primarily used to acquire relevant data for that carriage, such as location information and fault information.

[0086] In some embodiments, such as Figure 7 As shown, the railway vehicle wireless vehicle-to-ground data transmission device also includes: a WLAN board 103 installed in the carriage-level host, the WLAN board 103 including: a WLAN interface and a power interface (i.e., Figure 7 The DC12V, indicator lights (i.e., D1, D2, D3 in the diagram), JT interface, and WLAN board are plugged into the vehicle-level host.

[0087] In some embodiments, such as Figure 8As shown, the railway vehicle wireless vehicle-to-ground data transmission device also includes a WLAN antenna 104, which is installed on the top of the railway vehicle carriage and connected to the WLAN interface of the WLAN board 103.

[0088] Specifically, the WLAN antenna can connect to the station's local area network (LAN). When railway vehicles are stopped at the station, the WLAN antenna can connect to the LAN, thereby enabling WLAN communication. This allows for the rapid transmission of large amounts of data while railway vehicles are stopped at the station, and also facilitates the station's management and scheduling of railway vehicles through the LAN.

[0089] In some embodiments, the railway vehicle wireless vehicle-to-ground data transmission device further includes a display screen, which is connected to the BeiDou data acquisition module 101.

[0090] Specifically, the BeiDou data acquisition module 101 can input location information to the display screen. After receiving the location information, the display screen will show the location information for relevant personnel to view. The BeiDou data acquisition module 101 can also input power supply status, communication network status, and device connection status to the display screen, and the display screen can display these information after receiving them.

[0091] In some embodiments, the railway vehicle wireless vehicle-to-ground data transmission device further includes: an antenna base, which is fixed to the top of the railway vehicle carriage, and a Beidou 4G combined antenna 102 is mounted on the antenna base.

[0092] Specifically, to ensure the stability of the BeiDou 4G combined antenna 102, it can be installed in a corresponding antenna base. The antenna base is fixed to the top of the railway vehicle carriage through mounting holes, or it can be welded to the carriage roof. For example, the antenna base may include: a base, connectors, waterproof seals, etc. The base is made of high-strength alloy material and is directly welded to the train body, providing basic support for the entire mounting. It is designed with anti-slip textures or anchoring holes to increase the contact area and stability with the roof surface. Connectors include power connectors, signal line connectors, etc., responsible for connecting the antenna to the vehicle's electronic system, and are waterproof to prevent rainwater or moisture from entering and causing short circuits. Waterproof seals include rubber rings, silicone gaskets, etc., placed between the base and the roof contact surface to effectively isolate external moisture and protect internal components from corrosion.

[0093] It should be noted that the railway vehicle includes multiple carriages, and each carriage includes a carriage-level host. The Beidou data acquisition module 101 is installed in the carriage-level host.

[0094] In some embodiments, the BeiDou data acquisition module 101 can directly obtain the alarm information and location information of the carriage, and can directly send the alarm information and location information of the carriage to the ground server based on the BeiDou 4G combined antenna 102.

[0095] In this way, the railway vehicle wireless vehicle-to-ground data transmission device provided by this utility model can receive positioning signals from Beidou satellites through the Beidou 4G combined antenna to obtain more accurate location information. Furthermore, the Beidou 4G combined antenna can also achieve 4G data transmission with a ground server, improving the real-time performance and efficiency of data transmission.

Claims

1. A wireless vehicle-to-ground data transmission device for railway vehicles, characterized in that, include: Beidou data acquisition module and Beidou 4G combined antenna; The Beidou data acquisition module is installed inside the carriage of the railway vehicle, and the Beidou 4G combined antenna is installed on the top of the carriage of the railway vehicle. The Beidou data acquisition module is connected to the Beidou 4G combined antenna. The BeiDou 4G combined antenna receives positioning signals from BeiDou satellites and transmits the positioning signals to the BeiDou data acquisition module; The BeiDou data acquisition module locates the position of the railway vehicle based on the received positioning signal and sends the position information to the BeiDou 4G combined antenna. The BeiDou 4G combined antenna then sends the position information to the ground server via the 4G network.

2. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 1, characterized in that, The BeiDou 4G combined antenna includes a first port and a second port; The first port receives the positioning signal and sends the positioning signal to the BeiDou data acquisition module; The second port receives the location information and sends it to the ground server via the 4G network; The BeiDou 4G combined antenna is connected to the BeiDou data acquisition module through the first port and the second port.

3. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 2, characterized in that, The BeiDou data acquisition module includes: a BeiDou module, a 4G interface, a BeiDou interface, a JE interface, a JWD interface, a power supply, a power interface, and a SIM card slot.

4. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 3, characterized in that, The BeiDou interface of the BeiDou data acquisition module is connected to the first port of the BeiDou 4G combined antenna, and the 4G interface of the BeiDou data acquisition module is connected to the second port of the BeiDou 4G combined antenna.

5. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 3, characterized in that, The power interfaces include a 12V power interface and a 110V power interface.

6. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 3, characterized in that, Also includes: The carriage-level host is installed inside the carriage of the railway vehicle, and the Beidou data acquisition module is plugged into the carriage-level host.

7. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 6, characterized in that, Also includes: The WLAN board installed in the vehicle-level host includes a WLAN interface, a power interface, an indicator light, and a JT interface. The WLAN board is plugged into the vehicle-level host.

8. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 7, characterized in that, Also includes: A WLAN antenna is installed on the top of the carriage of the railway vehicle, and the WLAN antenna is connected to the WLAN interface of the WLAN board.

9. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 1, characterized in that, Also includes: The display screen is connected to the BeiDou data acquisition module.

10. The railway vehicle wireless vehicle-to-ground data transmission device according to claim 1, characterized in that, Also includes: An antenna base is fixed to the top of the carriage of the railway vehicle, and the Beidou 4G combined antenna is installed on the antenna base.

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