Wireless locomotive signal and STP integrated system and method based on Beidou positioning

Abstract

The present invention relates to a wireless locomotive signal and STP integrated system and method based on Beidou positioning. The system includes on-vehicle equipment and ground equipment. The on-vehicle equipment includes an on-vehicle wireless locomotive signal and STP integrated subsystem and an LKJ device which are connected to each other. The ground equipment includes a ground wireless locomotive signal and STP integrated subsystem, a satellite differential base station and an interlocking system which are respectively connected to the ground locomotive signal and STP integrated subsystem. The on-vehicle wireless locomotive signal and STP integrated subsystem is respectively connected to the satellite differential base station and the ground locomotive signal and STP integrated subsystem. Compared with the prior art, the present invention has the advantages of ensuring a high degree of integration of on-vehicle and ground equipment, etc.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and in particular to a wireless locomotive signal and STP integrated system and method based on Beidou positioning. Background Art

[0002] The locomotive signal equipment was once regarded as one of the "three major components" of the locomotive and is an essential on-vehicle equipment for improving transportation safety and realizing the functions of automatic alarm and automatic stop on the vehicle. The STP system (Wireless Shunting Locomotive Signal and Monitoring System) is an essential equipment for realizing the safety protection of shunting operations.

[0003] The traditional locomotive signal is limited by the problem of interference of the ground track circuit. A wireless locomotive signal can be adopted, and vehicle-ground communication can be realized through the GSM-R network. In addition, for the positioning transponders required for the wireless locomotive signal, the traditional passive transponders need to increase the equipment cost and maintenance cost, and virtual transponders based on the Beidou positioning system can be adopted.

[0004] The STP system can be composed of a virtual transponder based on Beidou positioning, an on-vehicle host, ground equipment, a Beidou satellite positioning module, and a GSM-R communication module.

[0005] The system structure of the existing wireless locomotive signal and STP system is as Figure 1 shown. For the existing locomotive signal and STP system, the following problems are faced:

[0006] 1. The locomotive signal is limited by the interference of the ground track circuit, and the signal quality is poor;

[0007] 2. When the wireless locomotive signal adopts a fixed active transponder, the maintenance cost of the equipment is increased;

[0008] 3. In the case where both the wireless locomotive signal and the STP system use the Beidou satellite positioning module for positioning, the Beidou satellite positioning modules of the on-vehicle and ground equipment of the two systems exist independently, resulting in unnecessary redundancy of the equipment;

[0009] 4. In the case where both the wireless locomotive signal and the STP system use the GSM-R communication module to realize vehicle-ground communication, the GSM-R communication modules of the on-vehicle and ground equipment of the two systems exist independently, resulting in unnecessary redundancy of the equipment;

[0010] 5. In the case where both the wireless locomotive signal and the STP system communicate with the interlocking system to obtain the signal status, the interlocking system establishes independent communication processes for these two systems. There are multiple subsystems in the rail transit signal system, and there are also communication channels between each subsystem. If the signal status acquisition of these two signal devices occupies too many resources, it will inevitably affect the normal operation of other systems;

[0011] 6. Both the wireless locomotive signal and the STP system communicate with the train operation recording device (LKJ). LKJ establishes independent communication processes for these two systems. If the information transmission occupies too many resources, it will inevitably affect the normal operation of other systems. Summary of the Invention

[0012] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide an integrated system and method for wireless locomotive signal and STP based on Beidou positioning.

[0013] The purpose of the present invention can be achieved through the following technical solutions:

[0014] An integrated system for wireless locomotive signal and STP based on Beidou positioning, the system includes on-vehicle equipment and ground equipment. The on-vehicle equipment includes an integrated subsystem of on-vehicle wireless locomotive signal and STP and an LKJ device that are connected to each other. The ground equipment includes a ground integrated subsystem of wireless locomotive signal and STP, as well as a satellite differential base station and an interlocking system that are respectively connected to the ground integrated subsystem of locomotive signal and STP. The integrated subsystem of on-vehicle wireless locomotive signal and STP is respectively connected to the satellite differential base station and the ground integrated subsystem of locomotive signal and STP.

[0015] Preferably, the integrated subsystem of on-vehicle wireless locomotive signal and STP includes an STP on-vehicle host, an on-vehicle device of wireless locomotive signal, an on-vehicle Beidou satellite positioning module, and a radio transmission unit RTM. The STP on-vehicle host is respectively connected to the on-vehicle device of wireless locomotive signal, the on-vehicle Beidou satellite positioning module, and the radio transmission unit RTM. The on-vehicle Beidou satellite positioning module is connected to the satellite differential base station, and the radio transmission unit RTM is connected to the ground integrated subsystem of locomotive signal and STP.

[0016] Preferably, the radio transmission unit RTM uses an on-vehicle GSM-R communication module.

[0017] Preferably, the ground integrated subsystem of locomotive signal and STP includes an STP ground host, a ground device of wireless locomotive signal, a ground Beidou satellite positioning module, and a data exchange center DSC. The STP ground host is respectively connected to the ground device of wireless locomotive signal, the ground Beidou satellite positioning module, and the data exchange center DSC. The ground Beidou satellite positioning module is connected to the satellite differential base station, and the data exchange center DSC is connected to the integrated subsystem of on-vehicle wireless locomotive signal and STP.

[0018] Preferably, the data exchange center DSC uses a ground GSM-R communication module.

[0019] Preferably, the ground equipment further includes a virtual transponder corresponding to the satellite differential base station.

[0020] Preferably, the LKJ device includes a man-machine interface and a train operation monitoring and recording device which are connected to each other.

[0021] A method using the integrated system of wireless locomotive signal based on Beidou positioning and STP as described above, the method comprising the following steps:

[0022] 1) After the ground device is started, initialize the interface information of each device, and create multiple threads to save the set data structures in the buffer area respectively;

[0023] 2) The ground device establishes communication with the interlocking system and receives the device status information of the interlocking system;

[0024] 3) The ground device periodically waits to determine whether there is an application information of a locomotive to access the network;

[0025] 4) After the on-vehicle device is started, initialize the interface information of each device, and create multiple threads to save the set data structures in the buffer area respectively;

[0026] 5) The on-vehicle device calculates whether the train is within the range of a certain station according to the Beidou positioning information. If so, continue to execute step 6). If not, the on-vehicle device judges the position of the locomotive every 2 s and continues to execute step 5);

[0027] 6) If it is determined that the locomotive is within the station range, the on-vehicle device controls the RTM to establish communication with the DSC. If the communication is successfully established, execute step 7). If the establishment is not successful, wait for 10 s and then continue to attempt to establish communication;

[0028] 7) When the GSM-R communication of the on-vehicle device is successfully established, send information to the ground device of the station and establish GSM-R communication with the ground device;

[0029] 8) After the on-vehicle device and the ground device establish GSM-R communication and the crew terminal inputs the station number, send an insertion access information to the corresponding station to enter the access process;

[0030] 9) The ground device judges whether to allow the locomotive to access the network and register and include it in the monitoring range of the ground device according to the received application access registration information sent by the on-vehicle device; If the ground device allows the locomotive to register, execute step 11). If the ground device does not allow the locomotive to register, execute step 10);

[0031] 10) When the ground device does not allow on-vehicle registration, send a registration failure information packet to the on-vehicle device and inform the reason;

[0032] 11) When the ground device allows on-vehicle registration, add this locomotive to the monitored locomotive linked list and sequentially poll and track the on-network locomotives in the linked list;

[0033] 12) Poll the locomotive that has accessed the network in turn to send control information and route information;

[0034] 13) Manage the reception and transmission of data between the main and standby machines of the ground equipment, and return to step 3).

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The present invention designs to integrate the wireless locomotive signal system and the STP system into one. The two systems share the Beidou positioning module and the GSM-R communication module, thus ensuring a high degree of integration of on-vehicle and ground equipment;

[0037] 2. The integrated system designed by the present invention communicates with the LKJ system through the on-vehicle host of the STP system, and collects the signal status information of the interlocking system through the ground host of the STP system. Therefore, the efficiency of information transmission is ensured, the external interfaces of the LKJ and the interlocking system are reduced, and its stability is improved;

[0038] 3. Step 5) of the present invention designs a task based on Beidou positioning. The function of the virtual transponder is realized through Beidou positioning, replacing the previous fixed active transponder. Therefore, the flexibility of transponder setting and the maintainability of equipment are improved;

[0039] 4. Step 6) of the present invention designs to adopt the GSM-R communication network. Therefore, the amount of communication data is increased, the stability of information transmission is improved, and the influence of terrain and landform on the data transmission radio of the existing communication equipment is avoided. Description of the Drawings

[0040] Figure 1 It is a schematic diagram of the system structure of the existing wireless locomotive signal and the STP system;

[0041] Figure 2 It is a schematic diagram of the system structure of the present invention;

[0042] Figure 3 It is a working flow chart of the method of the present invention. Detailed Embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Such as Figure 2As shown in the figure, a wireless locomotive signal and STP integrated system based on Beidou positioning, the system includes on-vehicle equipment 1 and ground equipment 2. The on-vehicle equipment 1 includes an integrated subsystem 101 of on-vehicle wireless locomotive signal and STP and an LKJ equipment 102 which are connected to each other. The ground equipment 2 includes an integrated subsystem 201 of ground wireless locomotive signal and STP, a satellite differential base station 202 and an interlocking system 203 which are respectively connected to the integrated subsystem 201 of ground locomotive signal and STP. The integrated subsystem 101 of on-vehicle wireless locomotive signal and STP is respectively connected to the satellite differential base station 202 and the integrated subsystem 201 of ground locomotive signal and STP.

[0045] The integrated subsystem 101 of on-vehicle wireless locomotive signal and STP includes an STP on-vehicle host 1011, an on-vehicle device 1012 of wireless locomotive signal, an on-vehicle Beidou satellite positioning module 1013 and a wireless transmission unit RTM1014. The STP on-vehicle host 1011 is respectively connected to the on-vehicle device 1012 of wireless locomotive signal, the on-vehicle Beidou satellite positioning module 1013 and the wireless transmission unit RTM1014. The on-vehicle Beidou satellite positioning module 1013 is connected to the satellite differential base station 202. The wireless transmission unit RTM1014 is connected to the integrated subsystem 201 of ground locomotive signal and STP. The wireless transmission unit RTM1014 adopts an on-vehicle GSM-R communication module. The LKJ equipment 102 includes a man-machine interface 1021 and a train operation monitoring and recording device 1022 which are connected to each other.

[0046] The integrated subsystem 201 of ground locomotive signal and STP includes an STP ground host 2013, a ground device 2014 of wireless locomotive signal, a ground Beidou satellite positioning module 2011 and a data exchange center DSC2012. The STP ground host 2013 is respectively connected to the ground device 2014 of wireless locomotive signal, the ground Beidou satellite positioning module 2011 and the data exchange center DSC2012. The ground Beidou satellite positioning module 2011 is connected to the satellite differential base station 202. The data exchange center DSC2012 is connected to the integrated subsystem 101 of on-vehicle wireless locomotive signal and STP. The data exchange center DSC2012 adopts a ground GSM-R communication module. The ground equipment 2 also includes a virtual transponder 204 which is correspondingly arranged with the satellite differential base station.

[0047] Therefore, both the wireless locomotive signal and the STP system of the present invention will use the Beidou satellite positioning module and the GSM-R communication module, and at the same time, they also communicate with the interlocking system, integrating the wireless locomotive signal and the STP system into one. The two systems share the Beidou positioning module and the GSM-R communication module, and can simultaneously realize train operation control and shunting operation protection.

[0048] Such asFigure 3 As shown, a method and device for efficiently collecting signal status by integrating wireless locomotive signal with STP system and real-time monitoring of train operation, the method includes the following steps:

[0049] Step 1, after the ground equipment starts, the equipment initialization module initializes the interface information of the equipment and creates multiple threads, and respectively saves the set data structures in the buffer areas;

[0050] Step 2, the ground equipment establishes communication with the interlocking system and receives the equipment status information of the interlocking system;

[0051] Step 3, the ground equipment periodically waits to determine whether there is an application information of a locomotive to access the network;

[0052] Step 4, after the on-vehicle equipment starts, the equipment initialization module initializes the interface information of the equipment and creates multiple threads, and respectively saves the set data structures in the buffer areas;

[0053] Step 5, the on-vehicle equipment calculates whether the train is within the range of a certain station according to the Beidou positioning information. If so, continue to execute. If not, the on-vehicle equipment judges the location of the locomotive every 2 s;

[0054] Step 6, if it is determined that the locomotive is within the station range, the on-vehicle equipment controls the RTM to establish communication with the DSC. If the communication is successfully established, continue to execute. If the establishment is not successful, wait for 10 s and then continue to attempt to establish communication;

[0055] Step 7, after the GSM-R communication of the on-vehicle equipment is successfully established, send information to the ground equipment of the station and establish GSM-R communication with the ground equipment;

[0056] Step 8: The on-vehicle equipment establishes GSM-R communication with the ground equipment, and after the crew member inputs the station number, sends an inserted access information to the corresponding station to enter the access process;

[0057] Step 9: The ground equipment judges whether to allow the locomotive to access the network and register and bring it into the monitoring range of the ground equipment according to the received application access registration information sent by the on-vehicle equipment; If the ground equipment allows the locomotive to register, execute Step 11. If the ground equipment does not allow the locomotive to register, execute Step 10;

[0058] Step 10: When the ground equipment does not allow on-vehicle registration, send a registration failure information packet to the on-vehicle equipment and inform the reason;

[0059] Step 11: When the ground equipment allows on-vehicle registration, add this locomotive to the monitored locomotive linked list and sequentially poll and track the registered locomotives in the linked list;

[0060] Step 12: Poll and send control information and route information to the locomotives that have accessed the network in turn;

[0061] Step 13: Manage the reception and transmission of data between the primary and standby machines of the ground equipment, and return to Step 3.

[0062] As mentioned above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for a wireless locomotive signal and STP integrated system based on Beidou positioning. The system includes on-vehicle equipment and ground equipment, and is characterized in that, The on-vehicle device described above includes an integrated subsystem of on-vehicle wireless locomotive signal and STP and an LKJ device which are connected to each other. The ground device includes an integrated subsystem of ground wireless locomotive signal and STP, a satellite differential base station and an interlocking system which are respectively connected to the integrated subsystem of ground locomotive signal and STP. The integrated subsystem of on-vehicle wireless locomotive signal and STP is respectively connected to the satellite differential base station and the integrated subsystem of ground locomotive signal and STP; The integrated subsystem of on-vehicle wireless locomotive signal and STP includes an STP on-vehicle host, an on-vehicle wireless locomotive signal device, an on-vehicle Beidou satellite positioning module and a radio transmission unit RTM. The STP on-vehicle host is respectively connected to the on-vehicle wireless locomotive signal device, the on-vehicle Beidou satellite positioning module and the radio transmission unit RTM. The on-vehicle Beidou satellite positioning module is connected to the satellite differential base station. The radio transmission unit RTM is connected to the integrated subsystem of ground locomotive signal and STP. Integrating the wireless locomotive signal and the STP system into one, the two systems share the Beidou positioning module and the GSM-R communication module, and can simultaneously realize train operation control and shunting operation protection; The method described above includes the following steps: 1) After the ground device starts, initialize the information of each interface of the device, and create multiple threads to respectively save the set data structures in the buffer area; 2) The ground device establishes communication with the interlocking system and receives the device status information of the interlocking system; 3) The ground device periodically waits to judge whether there is an application information of a locomotive to access the network; 4) After the on-vehicle device starts, initialize the information of each interface of the device, and create multiple threads to respectively save the set data structures in the buffer area; 5) The on-vehicle device calculates whether the train is within the range of a certain station according to the Beidou positioning information. If so, continue to execute step 6). If not, the on-vehicle device judges the position of the locomotive every 2 s and continues to execute step 5); 6) If it is determined that the locomotive is within the station range, the on-vehicle device controls the RTM to establish communication with the DSC. If the communication is successfully established, execute step 7). If the establishment is not successful, wait for 10 s and then continue to attempt to establish communication; 7) When the GSM-R communication of the on-vehicle device is successfully established, send information to the ground device of this station to establish GSM-R communication with the ground device; 8) After the on-vehicle device and the ground device establish GSM-R communication and the crew terminal inputs the station number, send an insertion access information to the corresponding station to enter the access network process; 9) The ground device judges whether to allow the locomotive to access the network and be included in the monitoring range of the ground device according to the received application access network registration information sent by the on-vehicle device. If the ground device allows the locomotive to register, execute step 11). If the ground device does not allow the locomotive to register, execute step 10); 10) When the ground device does not allow on-vehicle registration, send a registration failure information packet to the on-vehicle device and inform the reason; 11) When the ground device allows on-vehicle registration, add this locomotive to the monitored locomotive linked list and sequentially poll and track the on-network locomotives in the linked list; 12) Sequentially poll and send control information and route information to the on-network locomotives; 13) Manage the reception and transmission of data between the primary and backup units of the ground equipment, and return to step 3).

2. The method according to claim 1, characterized in that, The wireless transmission unit RTM uses an on-vehicle GSM-R communication module.

3. The method according to claim 1, wherein The ground locomotive signal and STP integrated subsystem includes an STP ground host, a wireless locomotive signal ground device, a ground Beidou satellite positioning module, and a data exchange center DSC. The STP ground host is respectively connected to the wireless locomotive signal ground device, the ground Beidou satellite positioning module, and the data exchange center DSC. The ground Beidou satellite positioning module is connected to the satellite differential base station, and the data exchange center DSC is connected to the on-vehicle wireless locomotive signal and STP integrated subsystem.

4. The method according to claim 3, wherein The data exchange center DSC uses a ground GSM-R communication module.

5. The method according to claim 1, characterized in that, The ground device further includes a virtual transponder corresponding to the satellite differential base station.

6. The method according to claim 1, wherein The LKJ device includes a human-machine interface and a train operation monitoring and recording device that are connected to each other.

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