High-speed railway ctc external interface system state maintaining method and system during window stop period

Abstract

The present invention discloses a method and system for maintaining the status of an external interface system during the outage of a high-speed rail CTC skylight. They are corresponding schemes. In the scheme: a CTC external support information subsystem with a two-level structure is designed. The two-level structure is an external support information center module and an external support information station module configured in the CTC center system and the CTC station system respectively. Through the CTC external support information subsystem, the synchronous recording of information of the external interface system is realized, and during the outage of the high-speed rail CTC skylight, it can replace the closed CTC subsystem and continuously provide external support information, which is of practical significance for accurately restoring the overall business at the end of the skylight and compressing the impact time of the skylight.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway transportation technology, and particularly relates to a method and system for maintaining the state of an external interface system of a high-speed railway CTC during a sky window period. BACKGROUND

[0002] A high-speed railway sky window is a time-space window period for technical operations such as equipment inspection, line maintenance, fault handling, and system upgrading, and the operation in the sky window period is interrupted according to a plan. A centralized traffic control (CTC) system is a system equipment for centralized dispatching of high-speed railway traffic resources, and the corresponding subsystem software of the CTC is closed during the sky window period to stop the corresponding dispatching service, so as to avoid the time-space conflict between the operation and the technical operation. With the improvement of the information fusion degree of the high-speed railway CTC system, the number of external interface systems of the CTC system increases, including a temporary speed restriction server (TSRS), a radio block center (RBC), a transportation dispatching management system (TDMS), a global system for mobile communications-railway (GSM-R), and interlocking and train control. There is a close state coupling relationship between the external interface system and the CTC, and the closing of the CTC subsystem often leads to the loss of the state of the external interface system, for example, Figure 1 Each module or device of the CTC center system and the CTC station system can be closed as a CTC subsystem. When the sky window ends and the closed CTC subsystem is enabled, the state of the external interface system cannot be automatically restored to the state before the sky window.

[0003] The influence of CTC subsystems on external interface system state includes three categories: master-slave state, clock synchronization and service execution state. (1) The influence on master-slave state is that the external interface system is a dual-system, and its master-slave state is determined and arbitrated by the CTC system. When the corresponding CTC subsystem is closed, the master-slave state of the external dual-system which depends on the arbitration of the CTC system changes, resulting in non-optimal device occupying the master authority. (2) The influence on clock synchronization state is that the CTC system loses the function of external time service due to the shutdown of the CTC subsystem, and the corresponding external interface system deviates from the clock. (3) The influence on service execution state is that the signal control state of speed limit, locking state, and shunting failure, which is sent by the CTC system to the external interface system and executed by the external interface system, is lost when the CTC subsystem is closed, because the external interface system cannot continuously receive the periodic instructions to maintain information.

[0004] Due to the different information needs of the external interface system to the CTC system, the influence of the CTC subsystem shutdown is also different. During the sky window period, the TSRS system needs to receive the speed limit command state maintenance information and clock information sent by the CTC system. The lack of speed limit command state maintenance information will cause the speed limit state in the TSRS execution to disappear, and the lack of clock information will cause the clock in the TSRS system to deviate. During the sky window period, the RBC needs to receive the clock information sent by the CTC system, and the lack of clock information will cause the RBC clock to deviate. The TDMS receives the train operation performance graph sent by the CTC system periodically. If the CTC system stops sending the train operation performance graph during the sky window period, it will cause the TDMS system to periodically alarm, affecting its service execution state. During the sky window period, the GSM-R system needs to receive the locomotive registration application information sent by the CTC system. The lack of this information will cause the registration state of the registered locomotive to disappear, and then trigger the GSM-R system alarm, affecting its service execution state. During the sky window period, the interlocking and train control systems need to receive the master-slave arbitration information and clock information sent by the CTC system. The lack of master-slave arbitration information will cause the master-slave state of the interlocking and train control systems to deviate from the optimal state, and the lack of clock information will cause the clock in the interlocking and train control systems to deviate.

[0005] In view of the above, the current solution is as follows: according to the state of the external interface system before the skylight, manually check the state of the external interface system affected during the skylight and set it, specifically: the electrical personnel records the main and standby state of the external interface system before the skylight, and confirms and sets the state for recovery at the end of the skylight; the dispatchers and station duty officers register the relevant business execution state of the external interface system before the skylight, and confirm and set the state for recovery at the end of the skylight; the clock state of the external interface system during the skylight is monitored by the electrical personnel and timely corrected, and the CTC subsystem resumes to the automatic synchronization mode after starting; the CTC part of the subsystem sets a dual system, the main machine synchronizes the information recorded by itself to the standby machine, the standby machine automatically takes over the corresponding business when the main machine stops, and provides information support to the outside.

[0006] However, the defects of the above solution are: manual registration, confirmation and setting of the state of the external interface system, not making full use of the available CTC channel resources and equipment resources during the skylight, low automation, high labor intensity of related personnel and high safety pressure; due to the large number of types and quantities of high-speed rail CTC external interface systems, the current manual method has no "technical defense" or "physical defense" measure to control, and there is a risk of omission and misoperation; before the end of the skylight, time needs to be reserved for manual confirmation and setting of the state of the external interface system, which prolongs the duration of the skylight, which is not conducive to the timely release of transportation capacity and the rapid recovery of operation organization; the CTC dual system needs to be closed at the same time in some construction operations to disable the corresponding business and ensure the safety of the construction operation within the skylight point, and the state of the external interface system cannot be effectively maintained during the shutdown of the dual machine.

[0007] In addition to the above manual solution and the dual machine synchronization solution applicable only in some scenarios, the existing automatic solution is mainly used for optimization of the railway skylight, or for management and control of information during the railway skylight, but cannot maintain the state of the external interface system, for example, Chinese invention patent application No. CN119250394A "Railway skylight solution optimization method, device, equipment and readable storage medium", Chinese invention patent application No. CN119840690A "High-speed railway skylight in-line dispatching business disabling method and system based on CTC".

[0008] Therefore, the present application is proposed. SUMMARY

[0009] The purpose of the present application is to provide a high-speed rail CTC skylight disabling period external interface system state maintenance method and system, which can replace the disabled CTC subsystem during the skylight period and continuously provide external support information, thereby reducing labor intensity and ensuring train operation safety.

[0010] The purpose of the present application is achieved by the following technical solutions:

[0011] An external interface system state maintaining system during high-speed railway CTC window stoppage period, comprising: a CTC external support information subsystem in a CTC system, used for maintaining the state of external interface system during high-speed railway CTC window stoppage period, wherein the CTC system is a dispatching centralized system, comprising: a CTC center system and a CTC station system;

[0012] The CTC external support information subsystem mainly comprises: an external support information center module accessing an application server in the CTC center system, and an external support information station module accessing a station extension in the CTC station system; the external support information center module receives and records state information of external interface system from the CTC center system forwarded through the application server, synchronization information of the state of external interface system of the CTC station system forwarded through the external support information station module, and clock information inside the CTC system sent by the application server; wherein the state information of external interface system comprises: main and standby state information and execution state information; the external support information station module receives and records state information of external interface system of the CTC station system in the station, and clock information inside the CTC system sent by the external support information center module, and the external support information station module sends the state information of external interface system of the station to the external support information center module as synchronization information;

[0013] When the starting condition is met, the external support information center module provides external support information for external interface system of the CTC center system, and the external support information station module provides external support information for external interface system of the CTC station system; wherein the external support information comprises state information and clock information provided to the corresponding external interface system.

[0014] An external interface system state maintaining method during high-speed railway CTC window stoppage period, realized based on the aforementioned external interface system state maintaining system during high-speed railway CTC window stoppage period, comprising: when the starting condition is met, the external support information center module provides external support information for external interface system of the CTC center system, and the external support information station module provides external support information for external interface system of the CTC station system; wherein the external support information comprises state information and clock information provided to the corresponding external interface system.

[0015] From the technical solution provided by the application, it can be seen that the CTC external support information subsystem with a two-level structure is designed, the two-level structure is respectively the external support information center module arranged in the CTC center system and the external support information station module arranged in the CTC station system, through the CTC external support information subsystem, the information of the external interface system is synchronously recorded, and during the high-speed rail CTC window downtime, the CTC subsystem which has been closed can be replaced to continuously provide the external support information, which has practical significance for the accurate recovery of the overall business at the end of the window and the compression of the window influence time length. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A schematic diagram of the external interface system state maintenance system during the high-speed rail CTC window downtime provided by the embodiment of the present application is shown in the figure.

[0018] Figure 2 A schematic diagram of the cross interconnection between the station extension and the interlocking and train control is shown in the figure.

[0019] Figure 3 A schematic diagram of the information verification process after the double-machine system switching is shown in the figure.

[0020] Figure 4 A schematic diagram of the temporary information channel establishment method provided by the embodiment of the present application is shown in the figure.

[0021] Figure 5 A working information flow direction diagram of the CTC external support information subsystem provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0023] Firstly, the terms possibly used in the present text are explained as follows:

[0024] The terms "comprise", "contain", "include", "have" or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, the inclusion of a technical feature element (such as raw materials, components, ingredients, carriers, dosage forms, materials, sizes, parts, components, mechanisms, devices, steps, processes, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or articles, etc.) should be interpreted as not only including the explicitly listed technical feature element, but also including other technical feature elements not explicitly listed but known in the art.

[0025] The term "consisting of" means excluding any technical feature element not explicitly listed. If this term is used in a claim, the term will make the claim closed, so that it does not contain technical feature elements other than those explicitly listed, except for conventional impurities associated therewith. If the term only appears in a certain clause of the claim, it only limits the elements explicitly listed in that clause, and the elements described in other clauses are not excluded from the overall claim.

[0026] Unless otherwise specifically provided or limited, the terms "mount", "connect", "connect", "fix", and the like should be broadly interpreted, for example: it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this text can be understood according to the specific circumstances.

[0027] A high-speed rail CTC sky window downtime external interface system state maintenance method and system provided by the present application is described in detail below. The contents not described in detail in the embodiments of the present application belong to the prior art known to those skilled in the art. If no specific conditions are specified in the embodiments of the present application, the conventional conditions or the conditions recommended by the manufacturer are used. If no manufacturer is specified for the instruments used in the embodiments of the present application, they are all conventional products that can be obtained by market purchase.

[0028] Embodiment one

[0029] The embodiments of the present application provide a high-speed rail CTC sky window downtime external interface system state maintenance system, which mainly comprises: a CTC external support information subsystem provided in a CTC system, used for high-speed rail CTC sky window downtime external interface system state maintenance, wherein the CTC system is a centralized dispatching system, comprising: a CTC center system and a CTC station system.

[0030] In the embodiment of the present application, the CTC external support information subsystem mainly comprises: an external support information center module connected to the application server in the CTC center system, and an external support information station module connected to the station extension in the CTC station system; the external support information center module receives and records the state information (the main and standby state information and the execution state information) of the external interface system in the CTC center system forwarded by the application server, the synchronization information of the state of the external interface system in the CTC station system forwarded by the external support information station module, and the clock information of the CTC system sent by the application server; the external support information station module receives and records the state information (the main and standby state information and the execution state information) of the external interface system in the CTC station system in the station, and the clock information of the CTC system sent by the external support information center module, and the external support information station module sends the state information of the external interface system in the CTC station to the external support information center module as synchronization information.

[0031] When the start condition is met, the external support information center module provides external support information for the external interface system in the CTC center system, and the external support information station module provides external support information for the external interface system in the CTC station system; wherein the external support information comprises the state information (the main and standby state information and the execution state information) and the clock information provided to the corresponding external interface system.

[0032] Preferably, the start condition comprises: within a set time threshold range, no state information feedback from the corresponding external interface system is received; or a set number of interface interruption alarm information is received.

[0033] Preferably, a direct connection logical channel is provided between the external support information center module and the external support information station module; when the external support information center module receives a synchronization request sent by the external support information station module through the direct connection logical channel, the last received synchronization information from the external support information station module is sent to the corresponding external support information station module through the direct connection logical channel.

[0034] Preferably, the application server and the station extension are both configured with dual machines; during the high-speed rail CTC window downtime, the main machines of the application server and the station extension are closed, and the corresponding standby machines are enabled, and the start condition of the external support information center module and the external support information station module is not met, in which case, the corresponding main machine business functions are taken over by the respective standby machines, and the clock information is sent to the corresponding external interface system.

[0035] Preferably, the station extension and the external interface system of the CTC station system connected thereto are both configured with dual machines; during the high-speed rail CTC window downtime, when the main machine of the station extension is closed and the standby machine is enabled, the starting condition of the external support information station module is not met, in which case, the standby machine of the station extension arbitrates according to the main / standby state of the external interface system of the CTC station system, and outputs the main / standby arbitration information to the corresponding external interface system of the CTC station system.

[0036] Preferably, when the application server and the main machine of the station extension are closed, and the respective standby machines undertake the corresponding main machine business functions, the standby machine of the application server sends a check request information to the external support information center module, and the standby machine of the station extension sends a check request information to the external support information station module; the external support information center module returns the execution state information of the external interface system of the CTC center system to the standby machine of the application server according to the check request information, and transmits the execution state information to the corresponding interface server by the standby machine of the application server, and the standby machine of the application server and the interface server check the execution state information of the external interface system of the CTC center system; wherein the interface server belongs to the CTC center system, and is used for connecting the application server and the external interface system of the CTC center system; the external support information station module returns the execution state information of the external interface system of the CTC station system to the standby machine of the station extension according to the check request information, and the station extension checks the execution state information of the external interface system of the CTC station system.

[0037] Preferably, the external support information center module and the interface server are configured with a direct connection channel, and the interface server is configured with port occupation software; the interface server belongs to the CTC center system, and is used for connecting the application server and the external interface system of the CTC center system; when the external support information center module is started, an instruction is sent to the port occupation software through the direct connection channel to occupy the port of the interface server; then, the external support information center module sends the external support information to the external interface system of the CTC center system through the corresponding interface server port; when the application server and the interface server are completely enabled and self-checked to be normal, the application server sends a port release occupation application information to the external support information center module, and the external support information center module controls the port occupation software to release the occupied interface server port.

[0038] Optionally, the external support information station module is deployed in the electric maintenance terminal of the CTC station system, and the port occupation software is configured in the integrated processor of the CTC station system; when the external support information station module is started, an instruction is sent to the port occupation software of the integrated processor to occupy the port of the integrated processor; then, the external support information station module sends the external support information to the external interface system of the CTC station system through the corresponding integrated processor port.

[0039] Preferably, the communication protocol of the CTC system is extended to realize data transmission between the CTC external interface system and the external interface system of the CTC station system.

[0040] In order to more clearly show the technical solutions provided by the present application and the technical effects generated, the system provided by the embodiments of the present application is described in detail below with specific examples.

[0041] In the current scheme, after the CTC system is restored, the state of the external interface system is confirmed and restored by the dispatchers, station operators or signal personnel. In fact, the way of closing the CTC subsystem during the window period is to close part of the software, and the hardware resources and network channels of the CTC system are usually not affected. Therefore, by using the stable hardware resources and network channels of the CTC system, a high-speed rail CTC external interface system state maintenance system during the window period is designed to realize timely recovery of the state of the external interface system when the CTC complete function is enabled after the window period ends, which has practical significance for accurate recovery of overall business at the end of the window period and compression of the window period length.

[0042] The system is described in detail from the following three aspects: First, based on the existing CTC architecture, a CTC external support information subsystem is designed for external interface system state maintenance, which replaces the closed CTC subsystem during the window period and continuously provides external support information. Second, the state maintenance requirements of the external interface system during the window period are analyzed and a high-speed rail CTC external information transmission method during the window period is designed, which designs the CTC external interface system state maintenance method from three aspects of function start condition, dual-system information synchronization mechanism, temporary communication channel establishment and solution. Third, the existing CTC communication protocol is expanded in combination with the communication flow to realize the external information support function during the window period.

[0043] I. CTC external support information subsystem design

[0044] 1. Analysis of CTC external support information types and system structure

[0045] The CTC system is the core technical equipment of train dispatching business, and the dispatchers mainly understand and control the train running state in the dispatching section through the CTC system. The external interface system of the CTC system receives and executes the related information sent by the CTC to correctly maintain its working state and accurately complete the operation intention of the dispatcher. The CTC system includes a CTC center system and a CTC station system, the external interface system of the CTC center system includes TSRS, RBC, TDMS and GSM-R, and the external interface system of the CTC station system includes interlocking and train control systems, such asFigure 1 The external interface system of the CTC center system refers to an external interface system that realizes information interaction through an interface server of the CTC center system; and the external interface system of the CTC station system refers to an external interface system that realizes information interaction through a station extension interface system.

[0046] The CTC center system realizes information interconnection with the corresponding external interface system through an independent interface server. The other end of the interface server is connected to an application server. The CTC station system realizes information interaction with the interlocking and train control systems through a station extension. Among them, the application server, the communication server, and the station extension and other CTC internal information forwarding devices are double-machine systems, the TSRS, RBC, and GSM-R interfaces are double-machine systems, and the TDMS interface is a single-machine system, as shown in Figure 1 Figure 1 As shown in the communication server, the train operation terminal, the electric maintenance terminal, the self-regulating machine, the line dispatching station, and various interface servers are all existing parts of the CTC system, and thus are not described in detail.

[0047] 2. Secondary structure design of the CTC external support information subsystem.

[0048] The CTC external support information subsystem includes an external support information center module and an external support information station module (which can be referred to as a center module and a station module), which are connected to an application server and a station extension respectively, and the system structure is as shown in Figure 1 The external support information center module is connected to the application server as a branch node of the information flow and has bidirectional communication capability. The application server is modified synchronously and has the access capability of the external support information center module. Preferably, in order to reduce the difficulty of hardware deployment, the external support information station module can run in the integrated processor and share hardware resources with the self-regulating machine and the station extension due to the large number of stations.

[0049] The external support information center module receives and records the state information (the main and standby state information and the execution state information) of the external interface system of the CTC center system forwarded by the application server, the synchronization information sent by the external support information station module, and the clock information of the CTC system; the external support information station module receives and records the state information of the external interface system of the CTC station system at the station and the clock information of the CTC system, and sends synchronization information to the center module. The external support information center module and the external support information station module have a direct connection logical channel, the synchronization information from the external support information station module to the external support information center module is transmitted through the channel, and the clock information of the external support information station module is directly obtained from the external support information center module through the direct connection channel.

[0050] ​Because the business function of the CTC station system depends on the CTC center system, there exists a situation that some functions of the CTC station system are disabled while the CTC center system is not disabled, but there does not exist a situation that the CTC center system is disabled while the CTC station system is not disabled, that is, the CTC center system being disabled is a sufficient and necessary condition for the CTC station system being disabled. Therefore, the availability and stability of the external support information center module are higher than those of the external support information station module during the sky window period, when the external support information station module cannot continuously run due to the power-off or restart of the station autonomous machine equipment (or other reasons), the synchronization information can be tried to be obtained from the external support information center module. When the business of the CTC station system is disabled and restored, the external support information station module sends a synchronization request to the external support information center module, and the external support information center module responds to the request and sends the last synchronization information obtained by the station to the external support information station module. This is a "request-response" mode, rather than an automatic sending mode of the external support information center module after monitoring the interruption and recovery of the external support information station module, because there exists a situation that the channel between the CTC center system and the CTC station system is interrupted, during which the external support information center module cannot monitor the state of the external support information station module and cannot obtain the latest synchronization information, but the external support information station module is still in a correct and effective working state.

[0051] II. High-speed rail CTC external information sending method during the sky window period

[0052] 1. Function start condition

[0053] To avoid increasing the workload of CTC users (i.e. dispatchers and equipment managers), the external support function of the CTC external support information subsystem adopts a self-starting mode. When the main and standby servers of the application server and the station extension are both in a shutdown state, the corresponding module (i.e. the external support information center module and the external support information station module) cannot obtain the state information (system main and standby state information and execution state information) forwarded by the external interface within the threshold range of the function activation time, and the external support information sending function for the corresponding external interface system is activated. Due to the information loss phenomenon caused by the transient channel failure of CTC, in order to distinguish between transient channel failure and sky window plan shutdown, the threshold value of the function activation time can be set to 20s, which is longer than the convergence time of the CTC system channel routing selection, i.e. the routing selection time of the CTC system under channel failure conditions can be completed within 20s, avoiding the misjudgment of the CTC external support information subsystem that the information interruption caused by the channel failure is a sky window state. Among them, activating the external support information sending function of the corresponding external interface subsystem means that when the CTC external support information subsystem does not receive the state information of a certain external interface system within the time threshold value (for example, the main and standby servers of the application server and the station extension are both in a shutdown state), it starts to send all the external support information required by the corresponding external interface system at this time; for example, if the external support information center module does not receive the state information of TSRS for 20s, it will start to send all the external support information required by the TSRS interface, including clock information and temporary speed limit command execution state information. The external interface system will feedback the state information after receiving the external support information sent by the CTC.

[0054] In addition to the above function activation condition based on the time threshold value, the interface interruption alarm information sent by the CTC center system and the station electric power maintenance terminal can also be used as the activation condition. Taking the station electric power maintenance terminal as an example, it polls the interface state every 3s, and the CTC external support information subsystem starts the external support information sending function after receiving a set number of times (for example, 7 times, 7 cycles are about 21s).

[0055] 2, Dual-machine system information synchronization mechanism.

[0056] The CTC internal information forwarding device and the TSRS, RBC, interlocking, and train control external interface systems are all dual-machine systems. When the main interface system is closed during the sky window period, the standby system takes over the main business function and sends support information externally.

[0057] Regarding clock information, since the CTC internal information forwarding device and the interface device both have independent clock information synchronization mechanisms, the reliability of the standby clock information is not lower than that of the main clock. Therefore, after the standby machine is activated, it does not receive the related information of the CTC external support information subsystem, and still synchronizes the time of the external interface system according to its own system time.

[0058] The station interlocking and train control system needs to continuously receive the main and backup arbitration information sent by the CTC station system. The interlocking and train control system is cross-connected with the station extension double machine system (indicated by A and B) in the CTC station system by the double machine system of itself, to form four information transmission channels, as shown in Figure 2 The station extension comprehensively analyzes the stability and real-time state of the A system or the B system in the external interface system according to the information received through the four information channels, selects one of the systems as the main device, and periodically sends the main and backup state maintenance information to the external interface system until the main and backup arbitration result changes. The main and backup state arbitration scheme can be implemented according to the conventional technology, and the present application will not be described in detail. Since the connection channel with the external interface system changes after the backup machine is started, the backup machine may make an arbitration result different from that of the main machine, so the backup machine does not receive the related information of the CTC external support information subsystem after the backup machine is started, and sends the support information according to the backup machine arbitration result.

[0059] The execution state information of the CTC external interface system involves train safety. In the double machine system (mainly referring to the CTC internal information forwarding device), there is a synchronization mechanism from the main machine to the backup machine, but due to the loss of channel information or the state of the main machine itself, the backup machine system may not be able to obtain the latest synchronization information in time. When the main machine is closed and the backup machine is started, the backup machine sends a verification request information to the CTC external support information subsystem, and the CTC external support information subsystem returns the execution state information after receiving the verification request information. The devices through which the information flows compare the execution state information stored by themselves with the execution state information, and the devices with inconsistent comparison results send alarm information to remind manual confirmation.

[0060] Taking the verification process of the TSRS external support information after the application server host is closed and triggers the backup machine as an example, the backup machine verification process after the backup machine is started is as shown in Figure 3 The application server host is closed, the backup machine is started and sends a verification request information to the external support information center module. The external support information center module sends the execution state information to the application server and the TSRS interface server, and the application server and the TSRS interface server compare the execution state information stored by themselves with the execution state information after receiving the information and send the comparison result to the CTC external support information subsystem. If the comparison result of the application server is inconsistent, the application server sends an alarm information.

[0061] 3. Temporary communication channel establishment and solution.

[0062] When there is no double machine system or the double machine synchronization mechanism fails, a temporary communication channel needs to be established. Specifically, in the case of only single machine system or double machine closed at the same time, there is no double machine synchronization mechanism, and the external support information channel is in a disconnected state, so a temporary communication channel for external support information needs to be established by using the existing network channel and hardware devices of the CTC.

[0063] Since the external support information station module can share hardware resources with the station extension, after the external support information station module sends function is started, it can automatically occupy the port connected with the external interface system, and send the master and standby state arbitration information according to the interface communication protocol. The station extension releases the channel port after the station extension is started.

[0064] Considering that the electric maintenance terminal undertakes the task of setting up shunt during the skylight period, and monitoring the state of the equipment, it has high availability. In addition to the above-mentioned scheme of sharing hardware resources with the station extension, the external support information station module can also be deployed in the station electric maintenance terminal device, and a port occupation software is added in the integrated processor. In the case of closing the station extension double machine, the external support information station module sends external support information to the external interface system (interlocking, train control) through the port occupation software.

[0065] The external support information center module can run independently in a server. When the external support information center module is enabled, a temporary information channel needs to be established, as shown in Figure 4 . Figure 4 In the above-mentioned scheme, the TSRS interface server is taken as an example to provide a temporary information channel establishment scheme. In this example, a port occupation software is pre-installed in the TSRS interface server. When the double machine system is closed or the single machine system is closed, the external support information center module cannot effectively obtain the state information. Then the external support information center module sends an instruction to the port occupation software through the direct connection channel to forcibly occupy the port of the interface server. The external support information center module sends external support information to the external interface system through the port occupation software through the direct connection channel. When the application server and the corresponding interface server are completely enabled and self-checking is restored to normal, the application server sends a port occupation release application information to the external support information center module, and the external support information center module controls the port occupation software to release the occupied port. The external support information center module also stops sending external support information.

[0066] III. Expand the existing communication protocol of CTC in combination with the communication flow direction.

[0067] The CTC external support information subsystem is connected to the existing CTC system, and the flow direction of the new information is shown in Figure 5 . Among them, the check result information and the alarm information follow the existing communication protocol of CTC. The format of the external support information packet and the occupation (release) port instruction information packet is formulated, and the format of the request information packet is expanded and modified.

[0068] 1. External support information

[0069] The external support information contains state information of the external interface system and clock information, wherein the state information of the external interface system is transmitted within the CTC system to realize the inter-device synchronization of the external support information, as shown in Table 1, which is the format of the external support information packet (omitting the clock information). The external support information is used not only for sending to the external interface system, but also as the synchronization information transmitted within the CTC system; when used for sending to the external interface system, the transmission data contains the state information of the external interface system and the clock information, and when used as the synchronization information, the transmission data mainly contains the state information of the external interface system.

[0070] The case of the external support information as the synchronization information exists in multiple scenarios, and examples of some scenarios are provided below.

[0071] (1) The external support information station module periodically sends the synchronization information to the external support information center module, i.e., the state information of the external interface system of the station where the external support information station module is located.

[0072] (2) After receiving the synchronization request of the external support information station module, the external support information center module sends the corresponding synchronization information to the external support information station module, i.e., the state information of the external interface system of the station where the external support information station module is located.

[0073] (3) After the standby machine of the dual-machine system of the CTC internal information forwarding device takes over the service, it sends the checking request information to the CTC external support information subsystem, and the CTC external support information subsystem receives the request information and sends the synchronization information (which contains the execution state information for support information checking) for information checking.

[0074] Similarly, when the external support information is used for sending to the external interface system, there are also multiple scenarios, and examples of some scenarios are provided below.

[0075] (1) When the port occupation software in the interface server needs to be enabled and a temporary information channel needs to be established, the external support information center module sends the external support information through the corresponding interface server port.

[0076] (2) When the port occupation software in the integrated processor needs to be enabled and a temporary information channel needs to be established, the external support information station module sends the external support information through the integrated processor port.

[0077] Table 1: Format of external support information packet

[0078]

[0079] 2. Port occupation (release) instruction information.

[0080] Port occupation software is arranged in the central TSRS, RBC, TDMS and GSM-R interface server, receives the occupation (release) port instruction information sent by the external support information center module and performs port occupation and release operation on the interface server. The occupation (release) port instruction information packet format is shown in Table 2.

[0081] Table 2: occupation (release) port instruction information packet format

[0082]

[0083] Of course, in combination with the optional solution provided in the foregoing, port occupation software can also be added in the integrated processor, and the information content of the port number in Table 2 and the like is adjusted accordingly.

[0084] 3. Request information.

[0085] The request information uses the information packet format in the existing protocol, and three categories are added in the information type field, which are synchronization request, execution state check request and release port occupation application information of the external support service. The request information packet format is shown in Table 3.

[0086] Table 3: request information packet format

[0087]

[0088] The above scheme provided by the embodiment of the application designs a CTC external support information subsystem with a two-level structure, and the two-level structure is the external support information center module and the external support information station module arranged in the CTC central system and the CTC station system. Through the CTC external support information subsystem, the information of the external interface system is recorded synchronously, and during the high-speed rail CTC window downtime, the CTC subsystem that has been closed can be replaced to continuously provide external support information, which has practical significance for the accurate recovery of the overall service at the end of the window and the compression of the window influence time length.

[0089] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is taken as an example for illustration, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the system is divided into different functional modules to complete all or part of the functions described above.

[0090] Those skilled in the art can clearly understand the above-mentioned embodiments can be realized by software, also can be realized by means of software plus necessary general hardware platform. Based on such understanding, the technical solutions of the above-mentioned embodiments can be embodied in the form of software product, which can be stored in a non-volatile storage medium (CD-ROM, U disk, mobile hard disk, etc.), including a plurality of instructions to make a computer device (personal computer, server, or network device, etc.) execute the method described in various embodiments of the present application.

[0091] Embodiment two

[0092] The embodiment of the present application provides a kind of high-speed rail CTC external interface system state maintenance method during skylight stop, which is mainly based on the external interface system state maintenance system of high-speed rail CTC during skylight stop provided in the foregoing embodiment, and the method comprises: when meeting the starting condition, the external support information center module provides external support information for the external interface system of CTC center system, and the external support information station module provides external support information for the external interface system of CTC station system;Wherein, the external support information contains the state information and clock information provided to the corresponding external interface system.

[0093] Considering that the foregoing system has been described in detail the working process of the whole system, thus no longer repeat here.

[0094] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the change or replacement within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited to the protection scope of claims. The information disclosed in the background section of this paper is only intended to deepen the understanding of the overall background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A system for maintaining the status of an external interface system during the deactivation of a high-speed rail CTC skylight, characterized in that: include: The CTC external support information subsystem, located in the CTC system, is used to maintain the status of the external interface system during the outage of the high-speed rail CTC skylight. The CTC system is a centralized dispatching system, including: the CTC center system and the CTC station system; The CTC external support information subsystem mainly includes: an external support information center module connected to the application server in the CTC central system, and an external support information station module connected to the station extension in the CTC station system; the external support information center module receives and records the status information of the external interface system from the CTC central system forwarded by the application server, the synchronization information of the external interface system status of the CTC station system forwarded by the external support information station module, and the clock information inside the CTC system sent by the application server; wherein the status information of the external interface system includes: master-slave status information and execution status information; the external support information station module receives and records the status of the station where it is located The CTC station system's external interface system status information and the CTC system's internal clock information sent by the external support information center module are transmitted, and the external support information station module transmits the station's CTC external interface system status information to the external support information center module as synchronization information; wherein a direct logical channel is provided between the external support information center module and the external support information station module; when the external support information center module receives a synchronization request sent by the external support information station module via the direct logical channel, the module transmits the last synchronization information received from the external support information station module to the external support information station module via the direct logical channel; When the startup conditions are met, the external support information center module provides external support information for the external interface system of the CTC center system, and the external support information station module provides external support information for the external interface system of the CTC station system; wherein, the external support information includes status information and clock information provided to the corresponding external interface system.

2. The external interface system status maintenance system during the outage of a high-speed rail CTC skylight according to claim 1, characterized in that: The start-up conditions include: not receiving status information fed back by the corresponding external interface system within a set time threshold; or receiving interface interruption alarm information a set number of times.

3. The external interface system state maintenance system during the outage of a high-speed rail CTC skylight according to claim 1 or 2, characterized in that: The application server and station extension are both dual-machine configurations; when the high-speed rail CTC skylight is out of use, the host machines of the application server and station extension are shut down, and when the corresponding standby machines are enabled, the startup conditions of the external support information center module and the external support information station module are not met. In this case, the respective standby machines take over the corresponding host business functions and send clock information to the corresponding external interface system.

4. The external interface system state maintenance system during the outage of a high-speed rail CTC skylight according to claim 1 or 2, characterized in that: The station extension and the external interface system of the CTC station system connected to it are both dual-machine configurations; when the high-speed rail CTC skylight is deactivated, the main machine of the station extension is turned off and the backup machine is activated, and the startup conditions of the external support information station module are not met. In this case, the backup machine of the station extension arbitrates according to the main and backup status of the external interface system of the CTC station system, and outputs the main and backup machine arbitration information to the external interface system of the corresponding CTC station system.

5. The external interface system state maintenance system during the high-speed rail CTC skylight deactivation period according to claim 3, characterized in that: Also includes: When the main machines of the application server and the station extension are shut down and their respective backup machines take over the corresponding main machine business functions, the backup machine of the application server sends a verification request message to the external support information center module, and the backup machine of the station extension sends a verification request message to the external support information station module; The external support information center module returns the execution status information of the external interface system of the CTC center system to the backup server of the application server based on the verification request information. The backup server of the application server transmits the information to the corresponding interface server. The backup server of the application server and the interface server verify the execution status information of the external interface system of the CTC center system. The interface server belongs to the CTC center system and is used to connect the application server with the external interface system of the CTC center system. The external support information station module returns the execution status information of the external interface system of the CTC station system to the standby machine of the station extension according to the verification request information, and the station extension verifies the execution status information of the external interface system of the CTC station system.

6. The external interface system state maintenance system during the outage of a high-speed rail CTC skylight according to claim 1, characterized in that: Also includes: The external support information center module is configured with a direct connection channel to the interface server, and the interface server is configured with port occupation software; The interface server belongs to the CTC center system and is used to connect the application server with the external interface system of the CTC center system; When the external support information center module is started, it sends a command to the port occupation software through a direct connection channel to occupy the corresponding interface server port; then, the external support information center module sends external support information to the external interface system of the CTC center system through the corresponding interface server port; When the application server and the interface server are fully enabled and self-check and return to normal, the application server sends a port occupation release application message to the external support information center module, and the external support information center module controls the port occupation software to release the occupied interface server port.

7. The external interface system state maintenance system during the outage of a high-speed rail CTC skylight according to claim 1, characterized in that: Also includes: The external support information station module is deployed in the electrical maintenance terminal of the CTC station system, and the port occupation software is configured in the integrated processor of the CTC station system. When the external support information station module is started, an instruction is sent to the port occupation software of the integrated processor to occupy the port of the integrated processor; thereafter, the external support information station module sends external support information to the external interface system of the CTC station system via the corresponding integrated processor port.

8. The external interface system status maintenance system during the high-speed rail CTC skylight deactivation period according to claim 1, characterized in that: Also includes: The communication protocol of the CTC system is expanded to realize data transmission between the CTC external support information subsystem and the external interface system of the CTC central system and the external interface system of the CTC station system.

9. A method for maintaining the status of an external interface system during the deactivation of a high-speed rail CTC skylight, characterized in that: Based on the implementation of the external interface system status maintenance system during the deactivation of the high-speed rail CTC skylight as described in any one of claims 1 to 8, the method includes: when the startup conditions are met, the external support information center module provides external support information for the external interface system of the CTC center system, and the external support information station module provides external support information for the external interface system of the CTC station system; wherein, the external support information includes status information and clock information provided to the corresponding external interface system.

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