CN112689264B - Wireless synchronous control communication platform and method for locomotive - Google Patents
Wireless synchronous control communication platform and method for locomotive Download PDFInfo
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Abstract
The invention discloses a locomotive wireless synchronous control communication platform and a method, which are integrated with communication modes of 5G-R, LTE, GSM-R and data transmission radio stations, are applicable to locomotives of different lines, can automatically select a proper communication mode according to the communication conditions of the ground of a line section, and take other communication modes as redundancy, thereby ensuring the communication effect and improving the reliability of the locomotive wireless synchronous control communication platform; in addition, each communication unit is integrated into an integrated terminal structure, so that the installation is convenient, and the cost control is facilitated.
Description
Technical Field
The invention relates to the technical field of railway communication, in particular to a wireless synchronous control communication platform and method for a locomotive.
Background
The traditional wireless synchronous control communication platform can support various communication modes, for example, the communication platform of the wireless synchronous control system of the heavy-duty combined train locomotive of the current Daqin railway mainly adopts a GSM-R network to communicate with an 800MHz data transmission radio station, so that the functions of registration, cancellation, marshalling, decompiling, service data transmission and the like between locomotives are realized. The general yellow railway mainly adopts the LTE network to communicate with the 800MHz data transmission radio station, and some locomotives adopt the 800MHz data transmission radio station and the 400KHz contact network induction communication radio station. The test equipment of the synchronous control system of the Haoji railway freight combination train mainly adopts a GSM-R network and a 400MHz data transmission radio station.
However, in the traditional wireless synchronous control communication platform, different communication modes are respectively provided with independent chassis, so that the installation is inconvenient and the cost is higher. For example, in the locomotive portion of the plastic of the local railway, the locomotive needs to turn around on the major, large, and large, in the state of marshalling, the locomotive of the plastic railway cannot turn around on the plastic railway, and the locomotive of the plastic railway cannot be marshalled on the plastic railway, because the synchronous operation communication platform cannot communicate with each other.
In addition, in recent years, the 800M band is gradually being reclaimed, and no frequency is available in the current synchronous control communication platform.
Therefore, it is necessary to develop a new generation of wireless synchronous control communication technology for locomotives on different lines to ensure the communication effect.
Disclosure of Invention
The invention aims to provide a locomotive wireless synchronous control communication platform and a method, which are integrated with communication modes of 5G-R, LTE, GSM-R and data radio stations and can be suitable for locomotives with different lines, thereby ensuring the communication effect.
The purpose of the invention is realized by the following technical scheme:
a locomotive wireless synchronous control communication platform comprises: vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: the vehicle-mounted data transmission equipment and the synchronous control remote control unit; a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of a master control locomotive and a slave control locomotive;
the communication unit in the vehicle-mounted data transmission device includes: the system comprises a data transmission radio unit, a GSM-R unit, an LTE unit and a 5G-R unit; the synchronous control remote control unit selects a corresponding communication unit according to the ground communication condition to realize data communication between different locomotives or between the locomotive and the ground; meanwhile, the ground equipment can monitor data transmitted and received by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time.
A locomotive wireless synchronous control communication method is realized based on the platform, and comprises the following steps: deploying vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: the vehicle-mounted data transmission equipment and the synchronous control remote control unit; a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of a master control locomotive and a slave control locomotive;
the communication unit in the vehicle-mounted data transmission device includes: the system comprises a data transmission radio station unit, a GSM-R unit, an LTE unit and a 5G-R unit, wherein the synchronous control remote control unit selects a corresponding communication unit to realize data communication between different locomotives or between the locomotive and the ground according to ground communication conditions; meanwhile, the ground equipment can monitor data transmitted and received by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time.
According to the technical scheme provided by the invention, a proper communication mode can be automatically selected according to the communication condition of the ground of the line section, and the rest communication modes are used as redundancy, so that the communication effect can be ensured, and the reliability of the wireless synchronous control communication platform of the locomotive is improved; in addition, each communication unit is integrated into an integrated terminal structure, so that the installation is convenient, and the cost control is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic view of a wireless synchronous operation and control communication platform of a locomotive according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a vehicle-mounted data transmission device according to an embodiment of the present invention;
fig. 3 is a flowchart of a working process of a wireless synchronous operation and control communication platform of a locomotive according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a locomotive wireless synchronous control communication platform, as shown in fig. 1, mainly comprising: vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: a vehicle Data Transfer Equipment (DTE) and a synchronous control Remote Control Unit (RCU); a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of the master control locomotive and the slave control locomotive; fig. 1 is merely exemplary of a configuration of two sections AB of a locomotive.
In an embodiment of the present invention, a communication unit in a vehicle-mounted data transmission device includes: the system comprises a data transmission radio unit, a GSM-R unit, an LTE unit and a 5G-R unit; the synchronous control remote control unit selects a corresponding communication unit according to the ground communication condition to realize data communication between different locomotives or between the locomotive and the ground; meanwhile, an interface monitoring server in the ground equipment can monitor data received and transmitted by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time, and a ground marshalling server in the ground equipment is used for realizing GSM-R network communication.
For easy understanding, the following description is made in terms of platform composition, communication principle and operation process.
1. The platform constitutes the structure.
In the embodiment of the invention, each locomotive is provided with two sets of vehicle-mounted data transmission equipment and synchronous control remote control units, each section A/B is provided with one set, and the vehicle-mounted data transmission equipment and the synchronous control remote control units in all the locomotives are the same.
The vehicle-mounted data transmission equipment adopts a standard 3U case, and each communication unit is installed in a board card plugging mode, so that the vehicle-mounted data transmission equipment is convenient to disassemble and assemble. As shown in fig. 2, the vehicle-mounted data transmission device includes various communication units, and further includes: the device comprises a power supply unit, a main control unit, a recording unit, an interface unit, a combiner and a multi-band antenna.
1) The combiner is compatible with the communication frequency bands of all the communication units and is matched with the multi-band antenna to realize data communication.
2) The power supply unit is used for supplying power to each unit in the vehicle-mounted data transmission equipment; and a customized standardized power supply module is adopted, and direct current is input to 110V, and 12V and 5V are output. Wherein the module power of 12V is 144W, and the module power of 5V is 50W. The protection circuit has the functions of input overvoltage protection and output overcurrent protection.
3) The main control unit adopts a redundancy design and comprises two control units; one control unit works in a main state at the same time to be used as a main control unit to carry out centralized scheduling and control on each unit, and the other control unit works in a standby state to be used as a standby control unit; the control unit adopts a customized universal core board, and applied resources mainly comprise an Ethernet interface, a USB interface, a serial port, an I/O and the like. The main control unit and the standby control unit are communicated in real time through a serial port, automatic synchronization of working states is achieved, when the main control unit fails, the standby control unit is switched to, and the main control unit and the standby control unit have the same network-on and registration states. Typically, the switching time is less than 2s.
4) The interface unit is provided with a plurality of serial ports and network ports and is used for realizing data communication between the vehicle-mounted data transmission equipment and the synchronous control remote control unit, specifically, the serial ports are provided for the synchronous control remote control unit to transmit data of a GSM-R network and a data transmission radio station, and the network ports are used for transmitting data of the LTE network and the 5G-R network and are in a coexistence state of a plurality of communication modes; when the communication mode is only the GSM-R network and the data transmission radio station, the network port is used for transmitting data of the GSM-R network and the data transmission radio station and used as transmission interface redundancy;
two serial ports and two network ports are taken as examples for introduction, and the two serial ports are respectively connected with a GSM-R unit and a data transmission radio unit; the two network ports are respectively connected with the LTE unit and the 5G-R unit, if some circuits do not need the LTE unit or the 5G-R unit, the network ports can also be connected with the GSM-R and the data transmission radio station as a serial port backup.
The interface unit is also used for realizing the main and standby arbitration and interface conversion of the two control units, all serial ports and network ports of the interface unit are controlled by the main control unit, and when the main control unit fails, the interface unit switches the control right of all the serial ports and the network ports to the other standby control unit.
In the embodiment of the invention, the interface unit is provided with an arbitration circuit, the arbitration circuit randomly sends a life signal to a control unit when the interface unit is powered on, the control unit continuously replies the life signal, the control unit is used as a main control unit, and then the interface unit and the main control unit perform data interaction of a serial port and a network port; if the control unit fails and can not recover the vital signal, the interface unit immediately sends the vital signal to the other control unit and performs data interaction with the other control board as the main control unit.
5) The recording unit is provided with a FLASH memory and is used for monitoring the states of all serial ports, network ports and communication units, namely, data transmitted by the local synchronous control remote control unit and the vehicle-mounted data transmission equipment and data transmitted and received by the vehicle-mounted data transmission equipment and the outside are recorded in logs, and the logs can be exported through a USB interface; the recording unit indicates the running state of the recording unit, the current communication state of each interface and the result of the main-standby arbitration through the indicator light.
6) The GSM-R unit is designed in a modularized mode, is designed in a customized mode, and is internally led out of a serial port to carry out data transmission with the control panel through the bottom plate. The SIM card installation is supported, and the panel is provided with an SIM card state lamp, a network state lamp and an antenna interface; the GSM-R unit is mainly communicated with a ground server through a GSM-R network so as to carry out marshalling tasks and the like with other locomotives. The GSM-R unit has a circuit data transfer function (CSD) and can perform the functions of attaching, authenticating, registering, transmitting and receiving data and canceling of a GSM-R network.
7) The LTE unit adopts the modular design, and the circuit board possesses the LTE unit, supports LTE's frequency channel and other demands, and the unit is inside to draw forth the net gape and carry out data transmission through bottom plate and control panel. The SIM card installation is supported, and the panel has SIM card status lamp and network status lamp. The LTE unit mainly realizes registration, grouping, service data transmission and cancellation with other locomotives. The LTE unit is provided with a network port and can support the call of the sip protocol to realize reconnection of the call.
8) The 5G-R unit adopts a modular design, the circuit board is provided with the 5G unit, the 5G-R frequency band and other requirements are supported, and a USB port is led out from the interior of the unit to carry out data transmission with the control board through the bottom board. The SIM card installation is supported, the panel is provided with an SIM card status lamp and a network status lamp, and the functions of registration, compiling and disassembling groups, data receiving and sending and cancellation can be carried out with other locomotives through a 5G-R network. The 5G-R unit is provided with a network port and can support the call of the sip protocol to realize reconnection of the call.
In the embodiment of the invention, the GSM-R unit, the LTE unit and the 5G-R unit are different boards (for example, boards similar to a CPCI chassis board can be adopted), and the three boards are respectively provided with own panels for displaying corresponding states.
9) The data transmission radio station unit adopts a modular design, a modulation mode CPFSK is adopted, the frequency range is 400 MHz-450 MHz, the air interface rate is 9600bps, the channel bandwidth is 25KHz, the interface rate is 19200bps, and the power supply is 12V direct current input. The data transmission radio station unit mainly realizes registration, grouping, service data transmission and cancellation with other locomotives.
2. Communication principle.
In a heavy-load combined train drawn by multiple locomotives, a head locomotive is called a master locomotive, a middle and rear locomotive is called a slave locomotive, and an AB section of each locomotive is provided with a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit.
The master control locomotive sends control instructions and state information through a synchronous control remote control unit and transmits the control instructions through wireless communication, and one or more slave control locomotives in the train receive the instructions and then process the instructions to synchronously drag or brake along with the master control locomotive. The combined train control system is mainly characterized in that strict logic control is realized through data communication of a wireless link, and in the embodiment of the invention, data communication is realized by adopting a data transmission radio station and GSM-R, LTE and 5G-R modes. Meanwhile, an interface monitoring server is erected on the ground, so that data received and transmitted through GSM-R, LTE and 5G-R networks can be monitored, and detailed air interface transmission data records are provided.
1) Data transmission radio station.
The wireless data transmission radio station does not depend on ground equipment, and the master-slave control locomotive directly communicates with the other side in a power coverage range. When the ultra-long heavy-load train such as 2 ten thousand tons, 3 ten thousand tons and the like is started, the wireless data transmission system adopts a communication mode combining single-frequency point broadcasting and relay forwarding to realize data communication between the master control locomotive and the middle and rear slave control locomotives of the combined train.
2) A GSM-R network.
GSM-R networks provide only point-to-point circuit switched data services and therefore, are supplemented with ground marshalling servers.
The GSM-R unit is matched with a ground marshalling server in the ground equipment to realize data communication, vehicle-mounted data transmission equipment on each locomotive is connected with a CSD (common mode detection) of the ground marshalling server, and the ground marshalling server compiles the master control locomotive and all slave control locomotives into a data conference group, so that data receiving and transmitting between the master control locomotive and the slave control locomotives are realized.
3) An LTE network.
The LTE unit is accessed to an LTE network and has the functions of network access and authentication, equipment IP address inquiry, locomotive marshalling and decompiling, service data transmission and the like. Data transmission between the master control locomotive and the slave control locomotive can be realized through the LTE network, and the data transmission comprises compiling and disassembling group information, control service data sent by the master control locomotive to the slave control locomotive, state information fed back by the slave control locomotive to the master control locomotive and the like. The data transmitted by the main LTE network can be directly monitored in a network management center by matching with an interface monitoring server established on the ground.
4) 5G-R networks.
The 5G-R network is similar to the LTE network, but the ultra-reliable low-delay technology enables synchronous control commands to be transmitted between the master vehicle and the slave vehicle more quickly, and the large-link technology provides guarantee for the number of locomotives in an ultra-long marshalling. And various data transmission between the master control locomotive and the slave control locomotive is realized through a 5G-R network. The data transmitted by the master and slave locomotive through the 5G-R network can be directly monitored in a network management center by matching with an interface monitoring server established on the ground.
In addition, the LTE unit and the 5G-R unit are compatible with the sip protocol, and can realize reconnection communication through an external sip telephone; when any unit of the GSM-R unit, the LTE unit and the 5G-R unit is used for transmitting grouped data, if any LTE unit or 5G-R unit is attached to the network and is in an idle state, the GSM-R unit, the LTE unit and the 5G-R unit can be used as a channel for reconnection conversation.
3. And (4) working.
In the embodiment of the invention, the vehicle-mounted data transmission equipment and the synchronous control remote control unit are respectively provided with a redundancy at the A/B section of the locomotive, the AB two sections of each locomotive are an operation section and a non-operation section, and under the normal condition, the vehicle-mounted data transmission equipment of the operation section works and communicates with the outside; when the vehicle-mounted data transmission equipment of the operating node fails, the vehicle-mounted data transmission equipment of the non-operating node is started to carry out communication, and the communication state is issued by the synchronous control remote control unit of the non-operating node.
In the embodiment of the invention, each communication unit in two vehicle-mounted data transmission devices of the AB two sections has a hot standby redundancy function, but only one communication unit receives and transmits data at the same time; the A/B section can be used as an operation section and a non-operation section, and a section operated by a driver can be determined and a section operated by a driver can be used as an operation section according to the driving direction.
As shown in fig. 3, after the vehicle-mounted data transmission device is started, it is first determined whether there is a USB device, and if so, it is checked whether there is a new program in the USB device, and the program is updated; the program is upgraded through the USB flash disk, so that the subsequent program updating and bug correction are facilitated.
The vehicle-mounted data transmission equipment executes a main control unit redundancy switching program after being started, detects whether a standby control unit exists, and ensures that the main control unit can be seamlessly switched to the standby control unit when the main control unit fails by the serial port communication synchronization state including a network-on state, a registration state, a logout state and a marshalling state.
After the vehicle-mounted data transmission equipment is started, executing interface processes of all communication units; the interface process of each communication unit correspondingly sends an AT command to the 5G-R unit, the LTE unit and the GSM-R unit to be attached to a network; carrying out command interaction with the synchronous control remote control unit to confirm that the data receiving and transmitting are normal; then, according to the command of the synchronous control remote control unit, calling, registering, grouping and/or canceling operations are carried out; selecting a communication mode according to the setting of the synchronous control remote control unit, and if the communication mode is set to be an automatic mode: 1) Calling and establishing connection according to the priority order of the 5G-R network, the LTE network and the GSM-R network, and if the high-priority communication unit is not attached to the network, selecting a lower-level communication unit to carry out calling, namely only adopting one communication unit to carry out communication at the same time; 2) When the network link with the established communication fails to receive and transmit in multiple periods (for example, three periods), the mobile communication is considered to be interrupted, the mobile communication is switched to a data transmission radio station unit for communication after the interruption of the mobile communication, the mobile communication is switched to a lower-level communication unit for communication after the interruption of the mobile communication exceeds a specified time (for example, 10 s), and if the mobile communication is a GSM-R network, the vehicle-mounted data transmission equipment of a non-operating node is started to call for logging in the network; for example, at present, the protocol of the vehicle-mounted data transmission device and the synchronous control remote control unit specifies that 3 periods are 900ms, namely, the data transmission radio station is switched to when the period is interrupted for 900ms, and because the switching speed of the data transmission radio station unit is the fastest, if the interruption time is 10s, the data transmission radio station is switched to a communication unit which is one-level lower if the interruption time is not recovered. 3) The priority order of the non-operation section for logging in the network is consistent with that of the operation section, and after the non-operation section mobile communication link is established, the data transmission radio station stops transmission and switches back to the mobile communication mode for transmission.
After the data communication link is established, if a 5G-R or LTE network is normally attached, the data communication link can be used as a voice channel to carry out conversation through the sip network telephone. The main flow function records all states, and the recording unit records logs of data receiving and transmitting of all interfaces, and the logs can be downloaded through USB equipment, so that data analysis is facilitated. Meanwhile, an interface monitoring server in the ground equipment can record all data transmitted by the air interface so as to compare and analyze the data with the log recorded by the recording unit.
For a single vehicle-mounted data transmission device, the internal control unit has redundancy, and the redundancy exists in different communication modes; for a single locomotive, the two sections AB are respectively provided with a set of vehicle-mounted data transmission equipment as redundancy, so that the absolute reliability of synchronous control wireless communication is ensured.
The wireless synchronous control communication platform provided by the embodiment of the invention integrates the communication modes of 5G-R, LTE, GSM-R and data radio, and has a terminal structure with integrated communication modules. The platform can automatically select a proper communication mode according to the priority of the communication modes arranged according to the performance level and the communication conditions on the ground of the line section, and the rest communication modes can be used as redundancy. Two sets of equipment are arranged on the locomotive, so that the equipment can be mutually redundant, and the quick switching between an operation section and a non-operation section is convenient when the 8-axle locomotive turns around. When the line section is provided with an LTE or 5G-R network, the voice unit can be accessed while data transmission is ensured, and the function of reconnection locomotive communication is provided. Each communication module is integrated in a case, the master control unit uniformly controls the data receiving and transmitting, and the equipment is provided with two control units which are mutually redundant. The communication units are made into the same size, only two modules can be installed on a fixed line to be redundant mutually, so that the cost is saved, and the communication modules can be conveniently and quickly installed or replaced on certain lines with different network sections.
Another embodiment of the present invention further provides a locomotive wireless synchronous control communication method, which is implemented based on the platform provided in the foregoing embodiment, and includes: deploying vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: the vehicle-mounted data transmission equipment and the synchronous control remote control unit; a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of the master control locomotive and the slave control locomotive;
the communication unit in the vehicle-mounted data transmission device includes: the system comprises a data transmission radio station unit, a GSM-R unit, an LTE unit and a 5G-R unit, wherein the synchronous control remote control unit selects a corresponding communication unit to realize data communication between different locomotives or between the locomotives and the ground according to ground communication conditions; meanwhile, the ground equipment can monitor data transmitted and received by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time.
The specific details related to the method are explained in detail in the foregoing embodiments, and thus are not described again.
Through the above description of the embodiments, it is clear to those skilled in the art that the above embodiments can be implemented by software, and can also be implemented by software plus a necessary general hardware platform. With this understanding, the technical solutions of the embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments of the present invention.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the above-mentioned division of the functional modules is merely used as an example, and in practical applications, the above-mentioned function distribution may be completed by different functional modules according to needs, that is, the internal structure of the platform is divided into different functional modules to complete all or part of the above-mentioned functions.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A locomotive wireless synchronous control communication platform is characterized by comprising: vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: the vehicle-mounted data transmission equipment and the synchronous control remote control unit; a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of the master control locomotive and the slave control locomotive;
the communication unit in the vehicle-mounted data transmission apparatus includes: the system comprises a data transmission radio unit, a GSM-R unit, an LTE unit and a 5G-R unit; the synchronous control remote control unit selects a corresponding communication unit according to the ground communication condition to realize data communication between different locomotives or between the locomotive and the ground; meanwhile, the ground equipment can monitor data transmitted and received by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time;
the AB two sections of each locomotive are divided into an operation section and a non-operation section, and under the normal condition, the operation section works through vehicle-mounted data transmission equipment and communicates with the outside; when the vehicle-mounted data transmission equipment of the operating node fails, starting the vehicle-mounted data transmission equipment of the non-operating node for communication, and issuing a communication state by the synchronous control remote control unit of the non-operating node;
the vehicle-mounted data transmission equipment executes a main control unit redundancy switching program after being started, detects whether a standby control unit exists or not, and ensures that the main control unit can be seamlessly switched to the standby control unit when the main control unit fails through serial port communication synchronization states including a network-on state, a registration state, a logout state and a marshalling state;
after the vehicle-mounted data transmission equipment is started, executing interface processes of all communication units; the interface process of each communication unit correspondingly sends an AT command to the 5G-R unit, the LTE unit and the GSM-R unit to be attached to a network; carrying out command interaction with the synchronous control remote control unit to confirm that the data receiving and transmitting are normal; then, calling, registering, grouping and/or canceling operations are carried out according to the command of the synchronous control remote control unit; selecting a communication mode according to the setting of the synchronous control remote control unit, calling and establishing connection according to the priority sequence of a 5G-R network, an LTE network and a GSM-R network if the communication mode is set to an automatic mode, and selecting a lower-level communication unit to call if a high-priority communication unit is not attached to the network; when the network link which has established communication fails to receive and transmit in multiple cycles, the mobile communication is interrupted, the mobile communication is switched to a data transmission radio station unit for communication after the mobile communication is interrupted, the mobile communication is switched to a lower-level communication unit for communication when the mobile communication is interrupted for more than specified time, and if the mobile communication is the GSM-R network, non-operation section vehicle-mounted data transmission equipment is started to call for logging in the network; the priority order of the non-operation section for logging in the network is consistent with that of the operation section, and after the non-operation section mobile communication link is established, the data transmission radio station stops transmission and switches back to the mobile communication mode for transmission.
2. The locomotive wireless synchronous control communication platform according to claim 1, wherein the vehicle-mounted data transmission equipment adopts a standard 3U case, and each communication unit is installed in a board card plugging mode; the vehicle-mounted data transmission equipment further comprises: the device comprises a power supply unit, a main control unit, a recording unit, an interface unit, a combiner and a multi-band antenna; wherein:
the combiner is compatible with the communication frequency bands of all the communication units and is matched with the multi-band antenna to realize data communication;
the power supply unit is used for supplying power to each unit in the vehicle-mounted data transmission equipment;
the main control unit adopts a redundancy design and comprises two control units; one control unit works in a main state at the same time to be used as a main control unit to carry out centralized scheduling and control on each unit, and the other control unit works in a standby state to be used as a standby control unit; the main control unit and the standby control unit are communicated in real time through a serial port, so that the automatic synchronization of the working state is realized, and when the main control unit fails, the standby control unit is switched to and has the same network access and registration states;
the interface unit is provided with a plurality of serial ports and network ports, the serial ports are provided for the synchronous control remote control unit to transmit data of a GSM-R network and a data transmission radio station, and the network ports are used for transmitting data of an LTE network and a 5G-R network and are in a coexistence state in a plurality of communication modes; when the communication mode is only the GSM-R network and the data transmission radio station, the network port is used for transmitting data of the GSM-R network and the data transmission radio station and used as transmission interface redundancy; the interface unit is also used for realizing the main-standby arbitration and the interface conversion of the two control units, all serial ports and network ports of the interface unit are controlled by the main control unit, and when the main control unit fails, the interface unit switches the control right of all the serial ports and the network ports to the other standby control unit;
the recording unit is provided with a FLASH memory and is used for monitoring the states of all serial ports, network ports and communication units, namely, data transmitted by the local synchronous control remote control unit and the vehicle-mounted data transmission equipment and data transmitted and received by the vehicle-mounted data transmission equipment and the outside are recorded in logs, and the logs can be exported through a USB interface; the recording unit indicates the running state of the recording unit, the communication state of each current interface and the result of the main-standby arbitration through the indicator light.
3. The locomotive wireless synchronous operation and control communication platform according to claim 1,
after the vehicle-mounted data transmission equipment is started, firstly judging whether USB equipment exists or not, if so, checking whether a new program exists in the USB equipment or not, and then updating the program; and then, executing the redundancy switching program of the main control unit.
4. A locomotive wireless synchronous operation and control communication platform according to claim 1 or 2, characterized in that the GSM-R unit, with modular design, supports SIM card installation; the GSM-R unit has a circuit data transmission function and can perform the functions of attachment, authentication, registration, data transceiving and logout of a GSM-R network;
the GSM-R unit is matched with a ground marshalling server in ground equipment to realize data communication, vehicle-mounted data transmission equipment on each locomotive establishes CSD connection with the ground marshalling server, and the ground marshalling server organizes the master control locomotive and all slave control locomotives into a data conference group, so that data receiving and sending between the master control locomotive and the slave control locomotives are realized.
5. The locomotive wireless synchronous control communication platform according to claim 1 or 2, wherein the LTE unit is of a modular design, supports SIM card installation, and implements data transmission between the master control locomotive and the slave control locomotive through an LTE network, including compiling and disassembling group information, control service data sent from the master control locomotive to the slave control locomotive, and status information fed back from the slave control locomotive to the master control locomotive.
6. The locomotive wireless synchronous operation and control communication platform according to claim 1 or 2, wherein the 5G-R unit adopts a modular design, supports SIM card installation, and can perform registration, compiling and disassembling groups, data transceiving and logoff functions with other locomotives through a 5G-R network.
7. The locomotive wireless synchronous control communication platform according to claim 1 or 2, wherein the data transmission radio unit is of a modular design; the communication mode combining single-frequency point broadcasting and relay forwarding is adopted to realize the functions of registration, compiling and disassembling groups, data receiving and sending and cancellation between the master control locomotive and the rest slave control locomotives.
8. The locomotive wireless synchronous control communication platform according to claim 1 or 2, wherein the LTE unit and the 5G-R unit are compatible with sip protocol, and can realize reconnection communication through an external sip telephone; when any unit of the GSM-R unit, the LTE unit and the 5G-R unit is used for transmitting grouped data, if any LTE unit or 5G-R unit is attached to the network and is in an idle state, the GSM-R unit, the LTE unit and the 5G-R unit can be used as a channel for reconnection conversation.
9. A locomotive wireless synchronous control communication method, which is realized based on the platform of any one of claims 1 to 8, and comprises the following steps: deploying vehicle-mounted equipment and ground equipment; wherein, the mobile unit includes: the vehicle-mounted data transmission equipment and the synchronous control remote control unit; a double-end configuration mode is adopted, and a set of vehicle-mounted data transmission equipment and a synchronous control remote control unit are respectively configured on the AB sections of the master control locomotive and the slave control locomotive;
the communication unit in the vehicle-mounted data transmission device includes: the system comprises a data transmission radio station unit, a GSM-R unit, an LTE unit and a 5G-R unit, wherein the synchronous control remote control unit selects a corresponding communication unit to realize data communication between different locomotives or between the locomotive and the ground according to ground communication conditions; meanwhile, the ground equipment can monitor data transmitted and received by the locomotive through the GSM-R unit, the LTE unit and the 5G-R unit in real time.
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| CN114189306B (en) * | 2021-12-03 | 2024-03-12 | 中国国家铁路集团有限公司 | Data synchronization system, method and device |
| CN114924562B (en) * | 2022-05-17 | 2023-07-07 | 厦门金龙联合汽车工业有限公司 | Calculation method of track target point for vehicle formation |
| CN115119177B (en) * | 2022-08-24 | 2023-01-03 | 广东省新一代通信与网络创新研究院 | Vehicle-mounted communication system and method for vehicle-ground communication |
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