Driving permission checking method based on vehicle-ground-vehicle wireless communication

Abstract

The invention discloses a driving permission checking method based on train-ground-train wireless communication, vehicle-mounted equipment and a system, which are corresponding schemes, and in the scheme, the driving permission calculation and the vehicle position management are carried out through ground equipment, and the driving permission and the position of a front train are sent to the vehicle-mounted equipment of each train; the vehicle-mounted equipment of each train calculates the distance between the two trains according to the position of the train and the received position of the front train, and compares the distance with the residual length in the received driving permission; if the remaining length in the driving permission is not less than the distance between the two vehicles, the driving permission is checked successfully; and if the residual length in the driving permission is smaller than the distance between the two vehicles, the driving permission checking fails. According to the scheme, the dependence of driving permission checking on track circuit equipment in the prior art is reduced, the deployment cost is controllable, the safety risk when the driving permission is abnormal can be effectively reduced, the overall safety control function of a train control system is reinforced, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of train operation control, and in particular to a driving permission verification method based on vehicle-ground-vehicle wireless communication, vehicle-mounted equipment and system. Background Art

[0002] In China's rail transit system, the train operation control system is a key piece of technical equipment for ensuring safe train operation and improving transportation efficiency. It consists of ground-based equipment and onboard equipment. Ground-based equipment is responsible for issuing travel permits and train control information to the trains under its jurisdiction based on train occupancy and route status. Onboard equipment is responsible for ensuring train safety and controlling train operation based on the travel permits provided by the ground-based equipment.

[0003] In wireless communication-based train control systems, the Radio Block Center (RBC) is the core device on the ground. It generates train driving permits based on information from interlocking, adjacent RBCs, the Temporary Speed ​​Restriction Server (TSRS), and Centralized Traffic Control (CTC). These permits are then transmitted to the train control system's onboard equipment. The onboard equipment calculates emergency and service braking deceleration curves based on the train's braking model and the end point of the driving permit provided by the ground equipment, and monitors train speed based on these dynamic curves. Currently, domestic wireless communication-based train control systems, such as CTCS-3 and new train control systems, use a continuous single-braking speed control method. This method uses a calculated model curve based on the driving permit, line data, and the train's braking performance.

[0004] In a control process based on driving permits, if the ATP (Automatic Train Protection System) controls the train based on driving permits sent by the RBC, and an error occurs in the driving permit sent by the RBC, the ATP will also use this incorrect driving permit to control the train, potentially creating a safety risk. The onboard equipment of the existing CTCS-3 train control system is capable of verifying the driving permit information sent by the RBC using low-frequency code information provided by the track circuit equipment. However, since the new train control system does not have track circuits, it cannot use low-frequency code information for driving permit verification. To reduce the reliance of driving permit verification on track circuits and improve the safety of the train control system, it is particularly important to propose a driving permit verification scheme based on train-to-ground-train wireless communication.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a driving permit verification method, vehicle-mounted equipment and system based on vehicle-ground vehicle wireless communication, which reduces the dependence of driving permit verification on track circuit equipment in the prior art, realizes driving permit verification through wireless communication, and increases system security.

[0007] The purpose of the present invention is achieved through the following technical solutions: A driving permit verification method based on vehicle-ground-vehicle wireless communication, comprising: Calculate driving permits and manage vehicle positions through ground equipment, and send driving permits and preceding vehicle positions to each train's onboard equipment; The on-board equipment of each train calculates the distance between the two trains based on the position of the train itself and the received position of the preceding train, and compares it with the remaining length in the received driving permit; if the remaining length in the driving permit is not less than the distance between the two trains, the driving permit verification is successful; if the remaining length in the driving permit is less than the distance between the two trains, the driving permit verification fails.

[0008] A vehicle-mounted device for verifying a driving permit based on vehicle-ground-vehicle wireless communication, the vehicle-mounted device comprising an interface and a processing unit; wherein: The interface is configured to receive the driving permission and the position of the preceding vehicle sent by the ground equipment; The processing unit is configured to calculate the distance between the two vehicles based on the position of the vehicle and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permission; if the remaining length in the driving permission is not less than the distance between the two vehicles, the driving permission verification is successful; if the remaining length in the driving permission is less than the distance between the two vehicles, the driving permission verification fails.

[0009] A driving permit verification system based on vehicle-ground-vehicle wireless communication comprises: ground equipment and vehicle-mounted equipment; The ground equipment is configured to calculate driving permits and manage vehicle positions, and send driving permits and preceding vehicle positions to each train; The vehicle-mounted device is configured to calculate the distance between the two vehicles based on the position of the vehicle itself and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permit; if the remaining length in the driving permit is not less than the distance between the two vehicles, the driving permit verification is successful; if the remaining length in the driving permit is less than the distance between the two vehicles, the driving permit verification fails.

[0010] It can be seen from the technical solution provided by the present invention that the dependence of the driving permit verification on the track circuit equipment in the prior art is reduced. The present invention does not change the overall architecture of the existing train control system, adds corresponding driving permit verification data to the existing interface of the system, and implements the driving permit verification function on the existing equipment software. The deployment cost is controllable, and the safety risks when the driving permit is abnormal can be effectively reduced, which is conducive to strengthening the overall safety control function of the train control system and improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 The present invention provides a flowchart of a method for verifying a driving permit based on vehicle-ground-vehicle wireless communication.

[0013] Figure 2 A schematic diagram of a vehicle-mounted device for verifying a driving permit based on vehicle-ground-vehicle wireless communication provided by an embodiment of the present invention.

[0014] Figure 3 A schematic diagram of a vehicle driving permit verification system based on vehicle-ground-vehicle wireless communication provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0016] First, the following terms may be used in this article: The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y includes both “X” or “Y” and “X and Y”.

[0017] The terms "include," "comprises," "contains," "has," or other similar expressions should be interpreted as non-exclusive. For example, "including certain technical features (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products, or manufactured articles)" should be interpreted as including not only the technical features explicitly listed, but also other technical features known in the art that are not explicitly listed.

[0018] The term "consisting of" excludes any technical features not explicitly listed. If used in a claim, this term renders the claim closed, excluding any technical features other than those explicitly listed, except for conventional impurities associated with them. If this term appears only in a clause of a claim, it limits only the elements explicitly listed in that clause; elements listed in other clauses are not excluded from the claim as a whole.

[0019] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on specific circumstances.

[0020] The following describes in detail a vehicle-to-ground vehicle wireless communication-based driving permit verification method, on-board device, and system provided by the present invention. Any information not described in detail in the embodiments of the present invention is prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of the present invention, the procedures were performed in accordance with conventional conditions in the art or the conditions recommended by the manufacturer. Reagents or instruments used in the embodiments of the present invention, where the manufacturer is not specified, are all commercially available conventional products.

[0021] Example 1 The embodiment of the present invention provides a method for verifying driving permission based on vehicle-ground-vehicle wireless communication, such as Figure 1 As shown, it mainly includes the following steps: Step 1: Calculate the driving permit and manage the vehicle position through the ground equipment, and send the driving permit and the position of the preceding vehicle to the onboard equipment of each train.

[0022] In the embodiment of the present invention, the radio block center in the ground equipment calculates the driving permission and sends the driving permission to the on-board equipment of each train; the temporary speed limit server in the ground equipment manages the vehicle position and sends the position of the preceding vehicle to the on-board equipment of each train.

[0023] In this embodiment of the present invention, each train can determine its own position through positioning. It can then send a position report containing this information to the Radio Block Center (RBC) and Temporary Speed ​​Restriction Server (TSRS) on the ground via train-to-ground wireless communication. The RBC calculates a driving permit based on the position report and other line information, and transmits it to the train's onboard equipment via train-to-ground wireless communication. The driving permit represents the maximum permitted position for the train. The temporary speed restriction server can then determine the preceding vehicle based on each train's position information and direction of travel and transmit the preceding vehicle's position.

[0024] In this embodiment of the present invention, the train positioning principle is as follows: the onboard equipment obtains displacement information through an interface with the wheel axle speed sensor. When passing a transponder placed at a specific point on the ground, the transponder information receiving unit of the onboard equipment of the train control system receives the absolute position information written in the transponder. By combining absolute and relative positions, the onboard equipment can obtain position information with controllable positioning errors.

[0025] Step 2: The onboard equipment of each train calculates the distance between the two trains based on the position of the train itself and the received position of the preceding train, and compares it with the remaining length in the received driving permit (the distance from the position of the train itself to the end of the driving permit).

[0026] Step 3: Determine the driving permit verification result.

[0027] In the embodiment of the present invention, if the remaining length in the driving permission is not less than the distance between the two vehicles, the driving permission verification is successful; if the remaining length in the driving permission is less than the distance between the two vehicles, the driving permission verification fails.

[0028] In an embodiment of the present invention, after the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-computer interaction interface of the train's onboard equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

[0029] The solution provided by the embodiments of the present invention combines the preceding vehicle position information sent by the temporary speed limit server with the proceeding permit information sent by the radio block center. This reduces the reliance of conventional track circuit equipment on proceeding permit verification, enabling proceeding permit verification via wireless communication. Furthermore, without changing the overall architecture of the existing train control system, the system simply adds the corresponding proceeding permit verification data to existing interfaces, implementing the proceeding permit verification function within existing equipment software. This approach maintains controllable deployment costs, effectively reduces safety risks associated with proceeding permit anomalies, and helps strengthen the overall safety control function of the train control system, thereby improving operational efficiency.

[0030] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the method provided by the embodiment of the present invention is described in detail below with reference to specific embodiments.

[0031] In a train control system, onboard equipment receives travel permission information from the train control system's ground-based RBC equipment via a wireless communication system during operation. The onboard equipment calculates the emergency braking deceleration curve and the service braking deceleration curve based on the train's braking model and the travel permission endpoints provided by the ground equipment, and monitors train speed based on these dynamic curves. However, existing travel permission verification methods rely on trackside circuit equipment and are not adaptable to various types of train control systems. To address this issue, the present invention provides a travel permission verification method based on train-to-ground-train wireless communication. This method verifies the travel permission information sent by the RBC using the onboard equipment combined with the preceding vehicle position information sent by the temporary speed limit server, addressing the aforementioned issues.

[0032] In this embodiment, the vehicle-mounted device establishes a normal communication session connection with the radio block center and the temporary speed limit server to implement the driving permit verification based on vehicle-ground-vehicle wireless communication. It mainly includes the following parts: 1. Ground equipment calculates driving permits and manages vehicle positions, and sends driving permit information and preceding vehicle position information to each train.

[0033] In this embodiment, the RBC equipment generates a train driving permit based on information provided by interlocking, adjacent RBCs, temporary speed limit servers, and centralized dispatching control, and sends the driving permit to the on-board equipment of the train control system via the wireless communication network.

[0034] The temporary speed limit server manages all vehicles within its jurisdiction, identifies the location and direction of each train, and identifies the preceding train on the same route for each vehicle.

[0035] The temporary speed limit server sends the identified location information of the preceding train to every train within its jurisdiction. The temporary speed limit server sends the preceding train's location information to trains at a fixed interval. This location information is based on the last relevant balise group (LRBG).

[0036] 2. The on-board equipment calculates the distance between the two vehicles based on the position of the vehicle itself and the received position information of the preceding vehicle, and compares it with the remaining length of the received driving permit.

[0037] The onboard equipment calculates the distance between the two vehicles based on its own vehicle position, the preceding vehicle position information based on the LRBG sent by the temporary speed limit server, and the link information list containing the LRBG. The calculated distance between the two vehicles is then checked and compared with the remaining length of the driving permit sent by the radio block center.

[0038] 3. The on-board equipment determines the driving permit verification result and performs safety processing based on the result.

[0039] If the remaining length of the driving permit is greater than or equal to the distance between the two trains, the onboard device considers the driving permit verification successful and performs no special processing. If the remaining length of the driving permit is less than the distance between the two trains, the onboard device considers the driving permit verification a failure and performs safety processing. The onboard device reports a fault message indicating that the driving permit is incorrect and refuses to use the driving permit to control the train.

[0040] In some embodiments, the vehicle-mounted device enters FS mode (full supervision mode) after startup, establishes a connection with the radio block center and the temporary speed limit server and receives a driving permit, and then performs the first reception of the preceding vehicle position processing according to the status of the preceding vehicle.

[0041] In this embodiment, after the onboard device establishes a connection with the temporary speed limit server, the temporary speed limit server incorporates the communication vehicle information into vehicle position sorting and management, and identifies the train ahead of the communication vehicle in its direction of travel.

[0042] In this embodiment, the vehicle-mounted device does not perform driving permission verification before receiving the preceding vehicle position information forwarded by the temporary speed limit server.

[0043] When the vehicle-mounted device meets the following conditions simultaneously and receives the preceding vehicle position information from the temporary speed limit server, the driving permission verification function is enabled: (1) The vehicle-mounted equipment is in FS mode or AM mode; (2) The onboard equipment establishes a connection with the radio block center; (3) The onboard equipment has received a valid driving permit sent by the radio block center; (3) The vehicle-mounted device establishes a connection with the temporary speed limit server; (4) The on-board device receives the preceding vehicle position information sent by the temporary speed limit server device.

[0044] In some embodiments, the communication vehicle operates in the section in FS mode or AM mode, and has performed driving permit verification based on the position information of the preceding vehicle. The ground equipment should be able to handle the driving permit safety verification function of trains under the jurisdiction of different temporary speed limit servers in the temporary speed limit server handover area.

[0045] In this embodiment, adjacent temporary speed limit servers exchange vehicle information and vehicle location sorting information within their jurisdiction through existing interfaces: (1) When the preceding vehicle enters the handover boundary of the temporary speed limit server, the handover temporary speed limit server and the receiving temporary speed limit server need to exchange vehicle management information. After the preceding vehicle enters the jurisdiction of the receiving temporary speed limit server, the handover temporary speed limit server should be able to correctly identify the preceding vehicle of the communication vehicle; (2) When the communication vehicle enters the handover boundary of the temporary speed limit server, the handover temporary speed limit server and the receiving temporary speed limit server need to exchange vehicle management information to ensure that the communication vehicle can perform driving permit verification.

[0046] The above solution provided by the embodiment of the present invention has the following advantages: (1) Adding corresponding driving permit verification data to the existing interface and implementing the driving permit verification function on the existing equipment software reduces the dependence of driving permit verification on track circuit equipment in the existing technology. The driving permit verification is realized through wireless communication, which can effectively reduce the safety risks when the driving permit is abnormal, and is conducive to strengthening the overall safety control function of the train control system and improving operational efficiency; (2) The onboard equipment verifies the driving permit information sent by the radio block center based on the preceding vehicle position information sent by the ground temporary speed limit server. This reduces the reliance of driving permit verification on track circuit equipment in existing technologies and increases system security by implementing driving permit verification through wireless communication.

[0047] Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiments can be implemented via software or by utilizing software plus a necessary general-purpose hardware platform. Based on this understanding, the technical solutions of the above embodiments can be embodied in the form of a software product. This software product can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or mobile hard drive) and includes a number of instructions for enabling a computer device (such as a personal computer, server, or network device) to execute the methods described in various embodiments of the present invention.

[0048] Example 2 The embodiment of the present invention provides a vehicle-mounted device for verifying driving permit based on vehicle-ground-vehicle wireless communication. The vehicle-mounted device is applied in the above embodiment, such as Figure 2 As shown, the vehicle-mounted device includes an interface and a processing unit, and is characterized in that it includes: an interface and a processing unit; wherein: The interface is configured to receive the driving permission and the position of the preceding vehicle sent by the ground equipment; The processing unit is configured to calculate the distance between the two vehicles based on the position of the vehicle and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permission; if the remaining length in the driving permission is not less than the distance between the two vehicles, the driving permission verification is successful; if the remaining length in the driving permission is less than the distance between the two vehicles, the driving permission verification fails.

[0049] In the embodiment of the present invention, the interface is configured to receive a driving permit sent by a radio block center in the ground equipment, and is configured to receive a preceding vehicle position sent by a temporary speed limit server in the ground equipment.

[0050] In the embodiment of the present invention, after the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-computer interaction interface of the on-board equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

[0051] In an embodiment of the present invention, the processing unit is further configured to disable the function of verifying the driving permit based on the driving permit and the preceding vehicle position information when wireless communication with the ground equipment is interrupted (i.e., when wireless communication with the radio block center and / or the temporary speed limit server is interrupted).

[0052] Considering that the relevant technical details involved in the vehicle-mounted device have been introduced in detail in the aforementioned embodiments, they will not be repeated here.

[0053] Example 3 The embodiment of the present invention provides a driving permit verification system based on vehicle-ground-vehicle wireless communication, which is mainly used to implement the method of the above embodiment, such as Figure 3 As shown, the system mainly includes: ground equipment and vehicle-mounted equipment; The ground equipment is configured to calculate driving permits and manage vehicle positions, and send driving permits and preceding vehicle positions to each train; The vehicle-mounted device is configured to calculate the distance between the two vehicles based on the position of the vehicle itself and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permit; if the remaining length in the driving permit is not less than the distance between the two vehicles, the driving permit verification is successful; if the remaining length in the driving permit is less than the distance between the two vehicles, the driving permit verification fails.

[0054] In the embodiment of the present invention, the ground equipment includes: a radio block center and a temporary speed limit server.

[0055] The radio block center is configured to calculate the driving permission and send the driving permission to the onboard equipment of each train.

[0056] The temporary speed limit server is configured to manage vehicle location and transmit the location of the preceding vehicle to the onboard equipment of each train. Vehicle location management includes identifying the location and direction of each train within its jurisdiction and, for each train, determining the preceding train on the same route. Train location information uses the tail position of the preceding train based on LRBG.

[0057] In an embodiment of the present invention, the temporary speed limit server sends the position of the preceding vehicle via wireless communication at a fixed period and / or when the vehicle-mounted device establishes a connection with the temporary speed limit server.

[0058] In an embodiment of the present invention, a temporary speed limit server communicates vehicle management information with an adjacent temporary speed limit server via a wired network, so as to process driving permit verification of two trains within the jurisdiction of different temporary speed limit servers.

[0059] In the embodiment of the present invention, after a train within its jurisdiction passes a grade conversion point, the temporary speed limit server notifies the following train to disable the function of verifying the driving permit based on the existing driving permit and the position of the preceding train.

[0060] In the embodiment of the present invention, after the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-computer interaction interface of the on-board equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

[0061] Considering that the relevant technical details involved in the system have been introduced in detail in the above embodiments, they will not be repeated here.

[0062] Those skilled in the art will clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the system can be divided into different functional modules to complete all or part of the functions described above.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art.

Claims

1. A driving permit verification method based on vehicle-ground-vehicle wireless communication, characterized in that: include: Calculate driving permits and manage vehicle positions through ground equipment, and send driving permits and preceding vehicle positions to each train's onboard equipment; The on-board equipment of each train calculates the distance between the two trains based on the position of the train itself and the received position of the preceding train, and compares it with the remaining length in the received driving permit; if the remaining length in the driving permit is not less than the distance between the two trains, the driving permit verification is successful; if the remaining length in the driving permit is less than the distance between the two trains, the driving permit verification fails.

2. The method for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 1, characterized in that: The calculation of driving permission and vehicle position management by ground equipment and the sending of driving permission and the position of the preceding vehicle to the onboard equipment of each train include: The radio block center in the ground equipment calculates the driving permission and sends the driving permission to the onboard equipment of each train; The temporary speed limit server in the ground equipment manages the vehicle positions and sends the position of the preceding vehicle to the onboard equipment of each train.

3. The method for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 1, characterized in that: After the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-machine interaction interface of the train's onboard equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

4. A vehicle-mounted device for verifying driving permits based on vehicle-ground-vehicle wireless communication, comprising an interface and a processing unit, characterized in that: include: an interface and processing unit; wherein: The interface is configured to receive the driving permission and the position of the preceding vehicle sent by the ground equipment; The processing unit is configured to calculate the distance between the two vehicles based on the position of the vehicle and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permission; if the remaining length in the driving permission is not less than the distance between the two vehicles, the driving permission verification is successful; if the remaining length in the driving permission is less than the distance between the two vehicles, the driving permission verification fails.

5. The vehicle-mounted device for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 4 is characterized in that: The interface is configured to receive the driving permission and the position of the preceding vehicle sent by the ground equipment and includes: The interface is configured to receive a driving permit sent by a radio block center in the ground equipment, and is configured to receive a preceding vehicle position sent by a temporary speed limit server in the ground equipment.

6. The vehicle-mounted device for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 4 is characterized in that: After the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-machine interaction interface of the on-board equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

7. The vehicle-mounted device for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 4 is characterized in that: The processing unit is further configured to disable the function of verifying the driving permission based on the driving permission and the preceding vehicle position information when wireless communication with the ground device is interrupted.

8. A driving permit verification system based on vehicle-ground-vehicle wireless communication, characterized in that: include: Ground equipment and vehicle-mounted equipment; The ground equipment is configured to calculate driving permits and manage vehicle positions, and send driving permits and preceding vehicle positions to each train; The vehicle-mounted device is configured to calculate the distance between the two vehicles based on the position of the vehicle itself and the received position of the preceding vehicle, and compare it with the remaining length in the received driving permit; if the remaining length in the driving permit is not less than the distance between the two vehicles, the driving permit verification is successful; if the remaining length in the driving permit is less than the distance between the two vehicles, the driving permit verification fails.

9. The driving permit verification system based on vehicle-ground-vehicle wireless communication according to claim 8 is characterized in that: The ground equipment includes: a radio block center and a temporary speed limit server; The radio block center is configured to calculate the driving permission and send the driving permission to the onboard equipment of each train; The temporary speed limit server is configured to manage vehicle positions and send the position of the preceding vehicle to the onboard equipment of each train. Vehicle position management includes: identifying the position and running direction of each train within its jurisdiction; and for each train, determining the preceding train on the same route.

10. The method for verifying driving permit based on vehicle-ground-vehicle wireless communication according to claim 9, characterized in that: After the driving permission verification fails, the method further includes: executing safety processing, reporting a fault text on the human-machine interaction interface of the on-board equipment, prompting that the driving permission is incorrect, and refusing to use the driving permission to control the train.

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