Early warning protection system and early warning method for non-monitored locomotive

Abstract

This invention discloses an early warning and protection system and a method for early warning of unmonitored locomotives, comprising: an early warning and protection server, a TDCS / CTC system, an onboard terminal, a handheld terminal, and a ground GNSS management server communicating with the server; the early warning and protection server is used to obtain real-time code position information of the station from the TDCS / CTC system, obtain onboard terminal positioning information from the onboard terminal, and obtain handheld terminal positioning information from the handheld terminal; the early warning and protection server is used to query the location information of construction personnel and monitoring locomotives from the ground GNSS management server based on the handheld terminal positioning information and the onboard terminal positioning information; based on the location information of construction personnel and monitoring locomotives, and combined with the section route direction, calculate early warning information of monitoring locomotives and / or unmonitored locomotives approaching the construction personnel and send it to the construction personnel. This invention can provide construction personnel with early warning of trains approaching without positioning equipment or with ineffective positioning, improving the safety of the early warning and protection system.

Description

Technical Field

[0001] This invention relates to the field of rail communication technology, and in particular to an early warning and protection system and an early warning method for non-monitored locomotives. Background Technology

[0002] With the rapid development of the rail transit industry, the risk of safety accidents caused by railway construction operations is increasing. In order to effectively prevent safety collision hazards during railway construction, railway early warning and protection systems have emerged.

[0003] Existing railway early warning and protection systems can track the real-time locations of trains, construction workers, and construction areas using BeiDou positioning information. Based on this real-time location information and interlocking code information, they calculate early warning information to alert railway construction workers of potential collision hazards. However, this system relies too heavily on the locomotive latitude and longitude information returned to ground equipment by onboard equipment for determining train positions. It lacks location tracking capabilities for many trains without positioning equipment or with malfunctioning positioning systems. Therefore, it cannot provide early warnings when such trains approach construction workers. Summary of the Invention

[0004] The purpose of this invention is to provide an early warning and protection system and an early warning method for unmonitored locomotives. Based on personnel location information, monitored locomotive information, and interlocking code information, the system calculates whether there are trains without positioning equipment or with failed positioning that are about to pass the location of construction personnel, thereby providing construction personnel with early warning information of train approach and making up for the shortcomings of existing early warning and protection systems based on satellite positioning.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: An early warning and protection system includes: an early warning and protection server, a TDCS / CTC system, a vehicle-mounted terminal, a handheld terminal, and a ground GNSS management server, all communicating with the early warning and protection server. The early warning and protection server is used to obtain real-time code position information of the station from the TDCS / CTC system; obtain vehicle-mounted terminal positioning information from the vehicle-mounted terminal; and obtain handheld terminal positioning information from the handheld terminal. The early warning and protection server is used to query the ground GNSS management server for the location information of construction personnel and monitoring locomotives based on the positioning information of the handheld terminal and the vehicle-mounted terminal. Based on the location information of the construction personnel and the monitoring locomotives, and combined with the section route direction, it calculates early warning information for monitoring locomotives and / or non-monitored locomotives approaching the construction personnel. The early warning and protection server sends the early warning information for the monitoring locomotives and / or non-monitored locomotives approaching the construction personnel.

[0006] Optionally, it also includes: a monitoring terminal, which communicates with the early warning and protection server to broadcast and display the received early warning information of the monitored locomotives and / or non-monitored locomotives approaching the construction personnel.

[0007] Optionally, it also includes: an interface server, wherein the early warning and protection server communicates with the TDCS / CTC system, the vehicle-mounted terminal, the handheld terminal, and the ground GNSS management server through the interface server.

[0008] Optionally, the interface server includes a communication interface server and a TDCSi interface server that communicate with each other. The early warning and protection server communicates with the TDCS / CTC system through the communication interface server and the TDCSi interface server.

[0009] Optionally, the early warning and protection server communicates with the vehicle terminal and the handheld terminal respectively through the communication interface server.

[0010] Optionally, the interface server further includes a web server, through which the early warning and protection server communicates with the monitoring terminal, the vehicle-mounted terminal, and the handheld terminal respectively.

[0011] Optionally, the early warning and protection server stores basic station element information internally. Combined with the station's real-time code position information, it searches for basic route sections based on the protection direction of open signals and marks their route directions. It then clears the route directions of the basic route sections based on their clearing status.

[0012] Optionally, the early warning and protection server obtains the vehicle terminal positioning information from the vehicle terminal, the vehicle terminal positioning information including the real-time latitude and longitude information and operating status information of the monitoring locomotive.

[0013] The handheld terminal's location information, including the real-time latitude and longitude of the construction personnel, is obtained from the handheld terminal. The ground-based GNSS management server stores the station's track geographic information. The early warning and protection server transmits the latitude and longitude information of the monitoring locomotive and the handheld terminal to the ground-based GNSS management server. The ground-based GNSS management server calculates the location information of the monitoring locomotive and the construction personnel and feeds it back to the early warning and protection server.

[0014] Optionally, when the section where the construction worker is located is not marked as red, the early warning and protection server searches sequentially to both sides of the section to determine whether there are sections marked as the direction of the construction worker's approach or unmarked directions, until a red section is found or only a locked section marked as the direction of the construction worker's approach is found, and then stops searching; if there is no monitoring locomotive heading towards the construction worker in the red section, it is considered that there is a non-monitored locomotive about to head towards the construction worker in the section; the non-monitored locomotive is traveling in the direction of the construction worker; the distance between the non-monitored locomotive and the construction worker is calculated based on the distance between the front insulating joint of the section where the non-monitored locomotive is located and the construction worker.

[0015] Optionally, when the section where the construction workers are located is marked as red: if there is no monitoring locomotive approaching the construction workers in that section, it is assumed that there is a non-monitored locomotive approaching the construction workers in that section. The direction is determined according to the section's route direction, and the distance is treated as unknown. The non-monitored locomotive warning information includes: non-monitored locomotive approach warning information with direction and distance and / or non-monitored locomotive approach warning information with unknown distance. The warning protection server sends the non-monitored locomotive warning information to the construction workers or monitoring terminals for broadcasting and display.

[0016] On the other hand, the present invention also provides a method for early warning of unmonitored locomotives, used in the early warning and protection system described above. The early warning method includes: the early warning and protection server receiving real-time code position information from the station, handheld terminal positioning information, and vehicle-mounted terminal positioning information; the early warning and protection server marking the route directions of all sections of the basic route where the open signal is located based on the real-time code position information from the station; the early warning and protection server querying the location information of construction personnel and monitoring locomotives from the ground GNSS management server based on the handheld terminal positioning information and the vehicle-mounted terminal positioning information; the early warning and protection server calculating early warning information of unmonitored locomotives approaching the construction personnel based on the location of the construction personnel and the location information of all monitoring locomotives, combined with the route directions of the sections; and the early warning and protection server sending the early warning information of monitoring locomotives and / or unmonitored locomotives approaching the construction personnel to the construction personnel.

[0017] Optionally, the early warning and protection server sends early warning information about monitored locomotives and / or non-monitored locomotives approaching construction personnel to the monitoring terminal for broadcasting and display.

[0018] Optionally, the step of the early warning and protection server marking the route direction of all sections of the basic route where the open signal is located based on the real-time code position information of the station includes: The early warning and protection server identifies all open signals along the entire line based on real-time code position information from the station. It then searches for connecting sections in the opposite direction of the open signal's protection direction and determines if they are currently blocked. If blocked, the server marks the approach direction of that section as the signal's protection direction. If not blocked, it searches for all sections in the protection direction of the open signal and marks the approach direction of these blocked sections as the signal's protection direction.

[0019] Optionally, the early warning and protection server can use real-time code position information from the station to find all unoccupied and unlocked sections along the entire line; and clear the route directions of all unoccupied and unlocked sections.

[0020] Optionally, the steps for the early warning and protection server to query the location information of construction personnel and monitoring locomotives from the ground GNSS management server based on the positioning information of handheld terminals and vehicle-mounted terminals include: the early warning and protection server receiving real-time positioning information of monitoring locomotives from each vehicle-mounted terminal; the early warning and protection server receiving real-time positioning information of construction personnel from each handheld terminal; and the early warning and protection server querying the location information of construction personnel and monitoring locomotives from the ground GNSS management server based on the positioning information of monitoring locomotives and construction personnel.

[0021] Optionally, the early warning and protection server determines whether the section where the construction worker is located is in red. If it is in red, it determines whether there is a monitoring locomotive heading towards the construction worker in the section. If there is, it sends a monitoring locomotive warning message to the construction worker. If not, it calculates the running direction of the non-monitored locomotive based on the direction of the construction worker's route. When the route direction is bidirectional or has no direction, it is considered that the direction is unknown, and a non-monitored locomotive approaching at an unknown distance is sent to the construction worker.

[0022] Optionally, if the early warning and protection server determines that the section where the construction worker is located is not in red, it then determines whether the section is locked. If locked, it determines whether the section has a marked path direction. If marked, it determines whether the path direction of the section is towards the construction worker. If not, the process ends. If yes, it searches for the next section away from the construction worker based on the connection relationship. It then determines whether the section is in red. If not, it returns to the step of determining whether the section is locked. If it is in red, it determines whether there is a monitoring locomotive on the section heading towards the construction worker. If there is, it sends a monitoring locomotive warning message to the construction worker. If not, it calculates the distance between the current section and the construction worker, taking the direction of the non-monitored locomotive as the direction towards the construction worker, and sends a non-monitored locomotive approach warning message with distance and direction to the construction worker.

[0023] Optionally, determine whether the section where the construction worker is located is in red. If not, determine whether the section is locked. If not, search for the next section away from the construction worker based on the connection relationship. Determine whether the section is in red. If not, return to the step of determining whether the section is locked. If it is in red, determine whether there is a monitoring locomotive on the section heading towards the construction worker. If there is, send a monitoring locomotive warning message to the construction worker. If not, calculate the distance between the current section and the construction worker, with the direction of the non-monitoring locomotive as the direction of heading towards the construction worker, and send a non-monitoring locomotive approach warning message with distance and direction to the construction worker.

[0024] Optionally, determine whether the section is marked with a route direction. If not, search for the next section away from the construction worker based on the connection relationship. Determine whether the section is in red. If not, return to the step of determining whether the section is locked. If it is in red, determine whether there is a monitoring locomotive on the section heading towards the construction worker. If there is, end the process. If not, calculate the distance between the current section and the construction worker. The direction of the non-monitored locomotive is the direction heading towards the construction worker. Send a non-monitored locomotive approach warning message with distance and direction to the construction worker.

[0025] This invention has at least one of the following technical effects: It can provide construction workers with early warnings of trains approaching without positioning equipment or with malfunctioning positioning, thus improving the safety of the early warning and protection system.

[0026] The design is simple and breaks away from the traditional method of tracking train positions based on routes. Instead, it uses open signal markers to indicate the basic route direction and, starting from the construction personnel, searches in real time for any approaching trains.

[0027] It saves manpower and material resources, and does not require additional investment in other ground equipment, thus effectively conserving resources. Attached Figure Description

[0028] Figure 1 This is a structural block diagram of an early warning and protection system provided in an embodiment of the present invention; Figure 2 and Figure 3 This is a flowchart illustrating an embodiment of the non-monitored locomotive early warning method provided by the present invention. Detailed Implementation

[0029] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the early warning and protection system and the early warning method for unmonitored locomotives proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0030] like Figure 1 As shown, an early warning and protection system includes: an early warning and protection server 100, a TDCS / CTC system 200, a vehicle-mounted terminal 300, a handheld terminal 400, and a ground GNSS management server 500, all communicating with the early warning and protection server 100. The early warning and protection server 100 is used to obtain real-time code position information of the station from the TDCS / CTC system 200; obtain vehicle-mounted terminal positioning information from the vehicle-mounted terminal 300; and obtain handheld terminal positioning information from the handheld terminal 400. The early warning and protection server 100 is used to query the ground GNSS management server 500 for the location information of construction personnel and monitoring locomotives based on the handheld terminal positioning information and the vehicle-mounted terminal positioning information. Based on the location information of the construction personnel and the monitoring locomotives, and combined with the section route direction, it calculates early warning information for monitoring locomotives and / or non-monitored locomotives approaching the construction personnel. The early warning and protection server 100 sends the early warning information for the monitoring locomotives and / or non-monitored locomotives approaching the construction personnel. TDCS (Train Operation Dispatching Command System) is a dispatching and command management system covering the entire railway network, while CTC (Centralized Traffic Control) is a centralized train dispatching system.

[0031] This embodiment calculates whether there are trains with no positioning equipment or with faulty positioning that are about to pass the location of the construction personnel based on the location information of the construction personnel, the monitoring locomotive information, and the interlocking code information. This provides the construction personnel with train approach warning information and makes up for the shortcomings of the existing early warning and protection system based on satellite positioning.

[0032] Please continue to refer to this. Figure 1As shown, in this embodiment or some other embodiments, it also includes: a monitoring terminal 600, which communicates with the early warning and protection server 100, and is used to broadcast and display the received early warning information of the monitored locomotive and / or non-monitored locomotive approaching the construction personnel.

[0033] The monitoring terminal 600 can communicate directly with the early warning and protection server 100, or it can communicate with the early warning and protection server 100 through the interface server described below.

[0034] Please continue to refer to this. Figure 1 As shown, in this embodiment, it further includes: an interface server, wherein the early warning and protection server 100 communicates with the TDCS / CTC system 200, the vehicle-mounted terminal 300, the handheld terminal 400, and the ground GNSS management server 500 respectively through the interface server. GNSS stands for Global Navigation Satellite System.

[0035] Please continue to refer to this. Figure 1 As shown, in this embodiment, the interface server includes a communication interface server 701 and a TDCSi interface server 702 that communicate with each other. The early warning and protection server 100 communicates with the TDCS / CTC system 200 through the communication interface server 701 and the TDCSi interface server 702.

[0036] Please continue to refer to this. Figure 1 As shown, in this embodiment, the early warning and protection server 100 communicates with the vehicle terminal 300 and the handheld terminal 400 respectively through the communication interface server 701.

[0037] Please continue to refer to this. Figure 1 As shown, in this embodiment, the interface server further includes a Web server 703, through which the early warning and protection server 100 communicates with the monitoring terminal 600, the vehicle terminal 300, and the handheld terminal 400 respectively.

[0038] Please continue to refer to this. Figure 1 As shown, in this embodiment, the early warning and protection server 100 stores basic station element information internally. Combined with the real-time code position information of the station, it searches out the basic route section according to the protection direction of the open signal and marks its route direction. It then clears the route direction of the basic route section according to the clearing status of the basic route section.

[0039] In this embodiment, the early warning and protection server 100 obtains the vehicle terminal positioning information from the vehicle terminal 300. The vehicle terminal positioning information includes the real-time latitude and longitude information and operating status information of the monitoring locomotive.

[0040] The handheld terminal 400 acquires its location information, which includes the real-time latitude and longitude information of the construction personnel. The ground GNSS management server 500 stores the station's track geographic information. The early warning and protection server 100 transmits the latitude and longitude information of the monitoring locomotive and the handheld terminal to the ground GNSS management server. The ground GNSS management server calculates the section information of the monitoring locomotive and the construction personnel and feeds it back to the early warning and protection server.

[0041] In this embodiment, when the section where the construction worker is located is not marked as red, the early warning and protection server searches sequentially to both sides of the section to determine if there are sections marked as the direction of approach towards the construction worker or unmarked sections, until a red section is found or only a locked section marked as the direction of approach away from the construction worker is found, and then stops searching. If there is no monitoring locomotive heading towards the construction worker in the red section, it is considered that there is a non-monitored locomotive approaching the construction worker in that section; the non-monitored locomotive is traveling in the direction of the construction worker; the distance between the non-monitored locomotive and the construction worker is calculated based on the distance between the insulated joint in front of the non-monitored locomotive's section and the construction worker. The early warning and protection server sends the non-monitored locomotive approach warning information with direction and distance to the construction worker and / or the monitoring terminal for broadcasting and display.

[0042] In this embodiment, when the section where the construction workers are located is marked as red: if there is no monitoring locomotive approaching the construction workers in that section, it is assumed that there is a non-monitored locomotive approaching the construction workers in that section. The direction is determined according to the section's route direction, and the distance is treated as unknown. The non-monitored locomotive warning information includes: non-monitored locomotive approach warning information with direction and distance and / or non-monitored locomotive approach warning information with unknown distance. The warning protection server sends the non-monitored locomotive warning information to the construction workers and / or monitoring terminals for broadcasting and display.

[0043] On the other hand, the present invention also provides a method for early warning of unmonitored locomotives in a railway early warning and protection system, comprising: Step A: The early warning and protection server receives real-time code position information from the station, positioning information from handheld terminals, and positioning information from vehicle-mounted terminals.

[0044] Step B: The early warning and protection server marks the route direction of all sections of the basic route where the open signal is located based on the real-time code position information of the station.

[0045] Step C: The early warning and protection server queries the ground GNSS management server for the location information of construction personnel and monitoring locomotives based on the positioning information of handheld terminals and vehicle terminals.

[0046] Step D: The early warning and protection server calculates early warning information for non-monitored locomotives approaching the construction personnel based on the location of the construction personnel and the location information of all monitored locomotives, combined with the route direction of the section.

[0047] Step E: The early warning and protection server sends early warning information about monitored locomotives and / or non-monitored locomotives approaching the construction personnel.

[0048] In this embodiment or some other embodiments, step E is also included: the early warning and protection server sends early warning information of monitored locomotives and / or non-monitored locomotives approaching construction personnel to the monitoring terminal for broadcasting and display.

[0049] Specific examples Figure 2 and Figure 3 As shown in the figure, the non-monitored locomotive early warning method for a railway early warning and protection system provided in this embodiment includes: Step S1: The early warning and protection server obtains the real-time code position information of the station from the TDCS / CTC system.

[0050] Step S2: The early warning and protection server finds all open signals along the entire line based on the real-time code position information of the station.

[0051] Step S3: Locate the connection section in the opposite direction of the open signal protection direction and determine whether it is in a red-occupied state (or whether it is a red light band). If it is in a red-occupied state, proceed to step S4; otherwise, proceed to step S5.

[0052] Step S4: Mark the route direction of this section as the signal protection direction.

[0053] Step S5: Locate all sections in the open signal protection direction and mark the route direction of these locked sections as the signal protection direction.

[0054] That is, search for the next signal with the same attributes along the positive direction of the signal and mark the section in between as the direction of the route.

[0055] Step S6: The early warning and protection server uses real-time station code position information to find all unoccupied and unlocked sections along the entire line.

[0056] Step S7: Clear all marked route directions on unlocked and unoccupied red zones.

[0057] Step S8: The early warning and protection server receives real-time location information of the monitored locomotives from each vehicle terminal (real-time location information of the vehicle terminal).

[0058] Step S9: The early warning and protection server receives real-time location information of construction personnel from each handheld terminal (real-time location information of handheld terminals).

[0059] Step S10: The early warning and protection server queries the ground GNSS management server for the location information of the monitoring locomotive and the construction personnel based on the location information of the monitoring locomotive and the construction personnel.

[0060] Step S11: Determine whether the section where the construction worker is located is in red. If it is in red, proceed to step S19; otherwise, proceed to step S12.

[0061] Step S12: Determine whether the section is locked. If it is locked, proceed to step S13; otherwise, proceed to step S15.

[0062] Step S13: Determine whether the section has been marked with a route direction. If it has, proceed to the next step; otherwise, proceed to step S15.

[0063] Step S14: Determine whether the section approach direction is towards the construction personnel. If yes, proceed to the next step; otherwise, end.

[0064] Step S15: Based on the connection relationship, locate the next section in the direction away from the construction personnel.

[0065] Step S16: Determine whether the segment is red. If it is red, proceed to step S17; otherwise, return to step S12.

[0066] Step S17: Determine if there is a monitoring locomotive heading towards the construction worker in the section. If not, proceed to step S18. If there is, send a monitoring locomotive warning message to the construction worker.

[0067] Step S18: Calculate the distance between the current section and the construction personnel. The direction of the non-monitored locomotive is the direction it is heading towards the construction personnel. Send the non-monitored locomotive approach warning information with distance and direction to the construction personnel.

[0068] Step S19: Determine whether there is a monitoring locomotive heading towards the construction worker in the section where the construction worker is located. If not, proceed to step S20. If so, send a monitoring locomotive warning message to the construction worker.

[0069] Step S20: Calculate the running direction of the unmonitored locomotive based on the direction of the construction personnel's route. When the route direction is bidirectional or has no direction, it is considered that the direction is unknown, and an approach warning message of an unmonitored locomotive with an unknown distance is sent to the construction personnel.

[0070] In summary, the solution adopted in this embodiment involves the early warning and protection server communicating with the TDCS / CTC system, vehicle-mounted terminals, handheld terminals, ground GNSS management server, and / or monitoring terminals through other interface servers. The early warning and protection server obtains real-time code position information of the station from the TDCS / CTC system, real-time latitude and longitude information and operating status information of monitored locomotives and construction personnel from the vehicle-mounted terminals and handheld terminals, and the segment information converted from latitude and longitude information by the ground GNSS management server, i.e., the location information of monitored locomotives and construction personnel. The early warning and protection server calculates early warning information for non-monitored locomotives based on personnel location information, monitored locomotive information, and interlocking code position information.

[0071] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0073] In addition, the functional modules in the various embodiments of this article can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0074] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An early warning and protection system, characterized in that, include: The early warning and protection server includes a TDCS / CTC system, a vehicle-mounted terminal, a handheld terminal, and a ground GNSS management server that communicate with the early warning and protection server. The early warning and protection server is used to obtain real-time code position information of the station from the TDCS / CTC system. The vehicle terminal positioning information is obtained from the vehicle terminal; the vehicle terminal positioning information includes the real-time latitude and longitude information of the monitoring locomotive; The handheld terminal's location information is obtained from the handheld terminal; the handheld terminal's location information includes the construction personnel's real-time latitude and longitude information; The early warning and protection server is used to query the location information of construction personnel and monitoring vehicles from the ground GNSS management server based on the location information of the handheld terminal and the vehicle-mounted terminal; the location information of the construction personnel and the monitoring vehicle is the section information where the monitoring vehicle and the construction personnel are located. Based on the location information of the construction personnel and the monitoring locomotive, and combined with the section approach direction, early warning information of monitoring locomotives and / or non-monitoring locomotives approaching the construction personnel is calculated; the non-monitoring locomotives refer to locomotives that have not installed positioning equipment or whose positioning has failed. The early warning and protection server sends early warning information about the monitored locomotives and / or non-monitored locomotives that are approaching the construction personnel to the construction personnel. The early warning and protection server stores basic station element information internally. Combined with the station's real-time code position information, it searches for basic route sections and marks their route directions according to the protection direction of the open signal. It then clears the route directions of the basic route sections according to their clearing status. When the section where the construction worker is located is not in red, the early warning and protection server searches to both sides of the section to determine whether there are sections marked as the direction of the construction worker's approach or unmarked, until a red section is found or only a locked section marked as the direction of the construction worker's approach is found and the search stops. If there is no monitoring locomotive heading towards the construction worker in the red zone, it is assumed that there is a non-monitoring locomotive heading towards the construction worker in that zone. The non-monitored locomotive was traveling towards the construction workers. The distance between the non-monitored locomotive and the construction personnel is calculated based on the distance between the front insulating joint of the section where the non-monitored locomotive is located and the construction personnel. When the section where the construction workers are located is in red: if there is no monitoring locomotive heading towards the construction workers in that section, it is assumed that there is a non-monitoring locomotive heading towards the construction workers in that section. The direction is determined according to the section's route direction, and the distance is treated as unknown. The unmonitored locomotive warning information includes: unmonitored locomotive approach warning information with direction and distance and / or unmonitored locomotive approach warning information with unknown distance.

2. The early warning and protection system as described in claim 1, characterized in that, Also includes: The monitoring terminal communicates with the early warning and protection server to broadcast and display early warning information received from the monitored locomotives and / or non-monitored locomotives approaching construction personnel.

3. The early warning and protection system as described in claim 2, characterized in that, Also includes: The interface server and the early warning and protection server communicate with the TDCS / CTC system, the vehicle-mounted terminal, the handheld terminal, and the ground GNSS management server through the interface server.

4. The early warning and protection system as described in claim 3, characterized in that, The interface server includes: a communication interface server and a TDCSi interface server that communicate with each other. The early warning and protection server communicates with the TDCS / CTC system through the communication interface server and the TDCSi interface server.

5. The early warning and protection system as described in claim 4, characterized in that, The early warning and protection server communicates with the vehicle-mounted terminal and the handheld terminal respectively through the communication interface server.

6. The early warning and protection system as described in claim 5, characterized in that, The interface server further includes a web server, through which the early warning and protection server communicates with the monitoring terminal, the vehicle-mounted terminal, and the handheld terminal respectively.

7. The early warning and protection system as described in claim 5, characterized in that, The vehicle-mounted terminal positioning information includes operational status information; The ground GNSS management server stores the station's track geographic information; The early warning and protection server transmits the latitude and longitude information of the monitoring locomotive and the handheld terminal to the ground GNSS management server. The ground GNSS management server calculates the section information of the monitoring locomotive and the construction personnel and feeds it back to the early warning and protection server.

8. A method for early warning of unmonitored locomotives, characterized in that, For an early warning and protection system as described in any one of claims 1 to 7, the early warning method includes: The early warning and protection server receives real-time code position information from the station, positioning information from handheld terminals, and positioning information from vehicle-mounted terminals. The early warning and protection server marks the route direction of all sections of the basic route where the open signal is located based on the real-time code position information of the station. The early warning and protection server queries the ground GNSS management server for the location information of construction personnel and monitoring locomotives based on the positioning information of handheld terminals and vehicle terminals. The early warning and protection server calculates early warning information for non-monitored locomotives approaching the construction personnel based on the location of the construction workers and the location information of all monitored locomotives, combined with the route direction of the section. The early warning and protection server sends early warning information about monitored locomotives and / or non-monitored locomotives approaching the construction personnel.

9. The method for early warning of unmonitored locomotives as described in claim 8, characterized in that, The early warning and protection server sends early warning information about monitored and / or non-monitored locomotives approaching construction personnel to the monitoring terminal for broadcasting and display.

10. The method for early warning of unmonitored locomotives as described in claim 9, characterized in that, The steps by which the early warning and protection server marks the route direction of all sections of the basic route where the open signal is located based on the real-time code position information of the station include: The early warning and protection server identifies all open signals along the entire line based on real-time code position information from the station. Locate the connecting section in the opposite direction of the protection direction of the open signal, determine whether it is in a red-occupied state, and if it is in a red-occupied state, mark the approach direction of the section as the protection direction of the signal; If it is not in a red state, then find all sections in the protection direction of the open signal and mark the route direction of these locked sections as the protection direction of the signal.

11. The method for early warning of unmonitored locomotives as described in claim 10, characterized in that, The early warning and protection server uses real-time code position information from the station to locate all unoccupied and unlocked sections along the entire line; Clear all routes that are not occupied or locked.

12. The method for early warning of unmonitored locomotives as described in claim 11, characterized in that, The steps by which the early warning and protection server queries the ground GNSS management server for the location information of construction personnel and monitoring locomotives based on the location information of handheld terminals and vehicle-mounted terminals include: The early warning and protection server receives real-time location information of the monitored locomotives from various vehicle terminals; The early warning and protection server receives real-time location information of construction workers from various handheld terminals; The early warning and protection server queries the ground GNSS management server for the location information of the monitoring locomotives and construction personnel based on their location information.

13. The method for early warning of unmonitored locomotives as described in claim 12, characterized in that, The early warning and protection server determines whether the section where the construction worker is located is in red. If it is in red, it determines whether there is a monitoring locomotive heading towards the construction worker in the section where the construction worker is located. If so, it sends a monitoring locomotive warning message to the construction worker. If not, the direction of the unmonitored locomotive is calculated based on the direction of the construction personnel's approach. When the approach is bidirectional or has no direction, it is considered that the direction is unknown, and an approach warning message for an unmonitored locomotive with an unknown distance is sent to the construction personnel.

14. The method for early warning of unmonitored locomotives as described in claim 13, characterized in that, If the early warning and protection server determines that the section where the construction worker is located is not within the red zone, it then determines whether the section should be locked. If locked, Then determine whether the route direction has been marked in this section. If it has, Then determine whether the approach direction of this section is towards the construction workers; if not, the process ends; if so, Based on the connection relationship, search for the next section in the direction away from the construction workers; Determine if the section is in red. If not, return to the step of determining if the section is locked. If it is in red, determine if there is a monitoring locomotive heading towards the construction worker in the section. If there is, send a monitoring locomotive warning message to the construction worker. If not, calculate the distance between the current section and the construction worker, taking the direction of the non-monitored locomotive as the direction of heading towards the construction worker, and send a non-monitored locomotive approach warning message with distance and direction to the construction worker.

15. The method for early warning of unmonitored locomotives as described in claim 14, characterized in that, Determine if the section where the construction worker is located is within the red zone. If not, determine if the section is locked. If not, Based on the connection relationship, search for the next section in the direction away from the construction workers; Determine if the section is in red. If not, return to the step of determining if the section is locked. If it is in red, determine if there is a monitoring locomotive heading towards the construction worker in the section. If so, send a monitoring locomotive warning message to the construction worker. If not, calculate the distance between the current section and the construction worker, with the direction of the non-monitored locomotive as the direction of heading towards the construction worker, and send a non-monitored locomotive approach warning message with distance and direction to the construction worker.

16. The method for early warning of unmonitored locomotives as described in claim 15, characterized in that, Determine if the section has a marked route direction. If not, search for the next section away from the construction workers based on the connection relationship. Determine if the section is in red. If not, return to the step of determining if the section is locked. If it is in red, determine if there is a monitoring locomotive on the section heading towards the construction worker. If there is, end the process. If not, calculate the distance between the current section and the construction worker, with the direction of the non-monitored locomotive as the direction of the construction worker, and send a non-monitored locomotive approach warning message with distance and direction to the construction worker.

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