CN111923967B - Enhanced CBTC train control system - Google Patents
Enhanced CBTC train control system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
- B61L2027/204—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation using Communication-based Train Control [CBTC]
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Abstract
The embodiment of the application discloses an enhanced CBTC train control system, namely an iCBTC system for short, which comprises a train control CBTC system based on communication, wherein an OCS function of the VBTC system is newly added to an OCS subsystem of a target control server in the CBTC system; a vehicle-mounted controller VOBC in the CBTC system is additionally provided with a vehicle-mounted equipment function of the VBTC system which is unique compared with the CBTC system; the operation levels of the enhanced CBTC train control system are sequentially a CBTC level, a VBTC level, a BM level and an IL level according to degradation sequencing, wherein the operation efficiencies of the CBTC level and the VBTC level are the same, and the operation efficiencies of the BM level and the IL level are lower than those of the CBTC level and the VBTC level.
Description
Technical Field
The embodiment of the application relates to the field of urban rail transit, in particular to an enhanced CBTC train control system.
Background
The urban rail transit has the advantages of large transportation capacity, high efficiency, low energy consumption, convenience in riding, safety, comfort and the like. In the present day that the energy crisis and environmental protection pressure are increasing day by day, urban rail transit has become the first choice mode of transportation. With city rapid development, resident's trip increases, also gradually improves to rail transit's operation efficiency requirement. Currently, the mainstream Train Control system for urban rail transit is a CBTC (Communication Based Train Control) system, and its essence is a Train Control system mainly Based on the ground. However, with the development of information technology, a Vehicle to Vehicle Based-on Train Control (VBTC) system mainly Based on a Vehicle gradually enters an urban rail transit Train Control system. The VBTC system integrates more trackside equipment functions through a VOBC (Vehicle-mounted Controller), so that trackside equipment is reduced, and compared with the CBTC system, the VBTC system has higher market competitiveness in the aspects of manufacturing cost, installation, maintenance and the like.
In view of the following advantages of VBTC, how to modify a deployed CBTC system so that the advantage of VBTC is an urgent issue.
Disclosure of Invention
In order to solve any one of the above technical problems, an embodiment of the present application provides an enhanced CBTC train control system.
In order to achieve the purpose of the embodiment of the application, the embodiment of the application provides an enhanced CBTC train control system, which comprises a train control CBTC system based on communication, wherein an OCS subsystem in the CBTC system is additionally provided with an OCS function of a train control VBTC system based on a vehicle; a vehicle-mounted controller VOBC in the CBTC system is additionally provided with a vehicle-mounted equipment function of the VBTC system which is unique compared with the CBTC system;
the operation levels of the enhanced CBTC train control system are sequentially a CBTC level, a VBTC level, a BM level and an IL level according to degradation sequencing, wherein the operation efficiencies of the CBTC level and the VBTC level are the same, and the operation efficiencies of the BM level and the IL level are lower than those of the CBTC level and the VBTC level.
One of the above technical solutions has the following advantages or beneficial effects:
on the basis of the CBTC system equipment and the architecture, the functions of the VBTC system are superposed, the integration of the VBTC system and the CBTC system is realized, and the enhanced CBTC train control system is realized.
Additional features and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the embodiments of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the examples of the embodiments of the present application do not constitute a limitation of the embodiments of the present application.
FIG. 1 is a schematic diagram of an enhanced CBTC train control system provided by an embodiment of the present application;
fig. 2 is a schematic diagram of an OCS subsystem provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a VOBC provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the embodiments of the present application, features in the embodiments and the examples may be arbitrarily combined with each other without conflict.
In the process of implementing the application, technical analysis is performed on the related technologies, and it is found that the related technologies have at least the following problems, including:
the operating grade of the CBTC system in practical application is a CBTC grade, a BM (Block Mode) grade and an IL (Interlocking Mode) grade in sequence according to the operating efficiency, where the CBTC grade is a primary grade, the BM grade and the IL grade are standby grades, and the standby grade is 30% to 70% lower than the primary grade in terms of operating efficiency.
The operation grade of the VBTC system in practical application is a VBTC grade, a BM grade and an IL grade in sequence according to operation efficiency, wherein the VBTC grade is a main grade, the BM grade and the IL grade are standby grades, and the standby grade is 30% -70% lower than the main grade in the aspect of operation efficiency.
From the above, on the basis of the device of the CBTC system, according to the VBTC system principle, the present application provides an enhanced CBTC Train Control (incorporated Communication Based-on Train Control, abbreviated as iCBTC) system.
The embodiment of the application provides an enhanced CBTC train control system, which comprises a train control CBTC system based on communication, wherein an OCS subsystem in the CBTC system is additionally provided with an OCS function of a train control VBTC system based on a vehicle; VOBC in the CBTC system is additionally provided with a unique vehicle-mounted equipment function of the VBTC system compared with the CBTC system;
the operation levels of the enhanced CBTC train control system are sequentially a CBTC level, a VBTC level, a BM level and an IL level according to degradation sequencing, wherein the operation efficiencies of the CBTC level and the VBTC level are the same, and the operation efficiencies of the BM level and the IL level are lower than those of the CBTC level and the VBTC level.
In one exemplary embodiment, there is a 30% to 70% reduction in the operating efficiency of BM classes and IL classes compared to CBTC classes and VBTC classes.
The CBTC system and the VBTC system are already in the field of urban rail transit signal systems in the related art. However, only one of the CBTC system or the VBTC system can be implemented, and only three operation levels are provided. The enhanced CBTC train control system provided by the embodiment of the application integrates the enhanced CBTC train control system and the enhanced CBTC train control system, and has four operation levels of the enhanced CBTC train control system.
Fig. 1 is a schematic diagram of an enhanced CBTC train control system according to an embodiment of the present disclosure. As shown in fig. 1, the enhanced CBTC Train control System includes an ATS (Automatic Train Supervision), an OCS (Object Controller Server), a ZC (Zone Controller), a VOBC, a DCS (digital Communication System), an LEU (Line Electronic Unit), a transponder, an axle counter, and an annunciator. Wherein:
1. ATS subsystem
The ATS is used as a subway operation driving command center and plays a role in assisting a dispatcher to compile an operation plan and supervise the execution of the plan. Its business content includes 3 main aspects: planning, monitoring and adjusting, and in addition, auxiliary functions such as statistical analysis, vehicle segment maintenance, etc.
The ATS has the same function on the CBTC system and the VBTC system, and realizes the function of train operation dispatching command on the line.
2. OCS subsystem
The OCS subsystem has the CI (Computer Interlocking) function of the CBTC system and also has the OCS function of the VBTC system; the OCS function of the VBTC system comprises a line resource management function, a line train management function and a trackside resource management function;
the OCS function of the VBTC system is arranged on CI equipment of the CBTC system;
when the operation grade is a CBTC grade, a BM grade or an IL grade, the OCS subsystem executes a CI function; and when the operation grade is the VBTC grade, the OCS subsystem executes the OCS function of the VBTC system.
Under the VBTC level, the OCS system and the VOBC implement communication by using a response mechanism, specifically, after receiving a control request initiated by VOBC equipment to the OCS subsystem, the OCS subsystem executes an OCS function of the VBTC system to respond to the OCS subsystem requesting the control.
Fig. 2 is a schematic diagram of an OCS subsystem provided in the embodiment of the present application. As shown in fig. 2, the OCS function of the VBTC system is to add a line resource management function, a line train management function, and a trackside resource management function to the CI device, so that the OCS function meets the functional requirements of the VBTC system.
The OCS subsystem comprises a CBTC system functional module and a VBTC system specific functional module. Wherein:
the VBTC system is a train control system taking VOBC as a main body, the specific functions of the VBTC system in OCS equipment are that the VOBC firstly initiates a command request to the OCS, and the OCS passively responds. Therefore, since the function module of the OCS subsystem is called completely according to the request commands of the ATS and VOBC, the OCS subsystem does not need to be configured when the system architecture is set.
3. ZC equipment
And the ZC equipment performs mobile authorization calculation on the CBTC level train in the jurisdiction range according to the route information of the OCS and the position information of the train in the jurisdiction range in the CBTC system.
4. VOBC device
The VOBC includes two main functional modules, namely, Automatic Train Operation (ATO) and Automatic Train Protection (ATP). In the enhanced CBTC train control system, the VOBC device adds the specific functions of the VBTC system in addition to the vehicle-mounted device function of the CBTC system, including: the system comprises a running path searching function, a vehicle-vehicle communication function, a mobile authorization calculation function and a path resource management function. In addition, the system also comprises functions specific to the enhanced CBTC train control system, including a grade conversion function based on the enhanced CBTC train control system and a mobile authorization use function based on the enhanced CBTC train control system.
Fig. 3 is a schematic diagram of a VOBC provided in an embodiment of the present application. As shown in fig. 3, the VOBC comprises:
the first functional module is used for realizing VOBC function of the CBTC system;
the second functional module is used for realizing the unique vehicle-mounted equipment function of the VBTC system compared with the CBTC system;
and the third functional module is used for realizing a mobile authorization use function of the enhanced CBTC train control system and a conversion function of the operation grade in the enhanced CBTC train control system.
In one exemplary embodiment, the VOBC further comprises:
and the architecture management module is used for determining the combination of the operation levels supported by the enhanced CBTC train control system and controlling the starting of at least one of the first functional module, the second functional module and the third functional module according to the combination of the operation levels.
The VOBC can determine a configuration parameter appType of a system architecture function according to the running grade set for the enhanced CBTC train control system, so that different equipment configurations in the enhanced CBTC train control system can be realized, and the following system architecture schemes can be realized:
the system architecture I is as follows:
when appType is equal to the value 1, it indicates that the VOBC supports the CBTC level, the VBTC level, the BM level, and the IL level. In each control period, the VOBC needs to schedule a VOBC function module, a VBTC system specific function module and an enhanced CBTC train control system specific function module of the CBTC system, and mixed running of a CBTC train and the VBTC train on a line can be achieved.
A second system architecture:
when appType is equal to the value 2, it indicates that the VOBC supports the CBTC level, the BM level, and the IL level. During each control cycle, the VOBC needs to schedule VOBC function blocks of the CBTC system.
The system architecture is three:
when appType is equal to the value 3, it indicates that the VOBC supports the VBTC level, the BM level and the IL level. During each control cycle, the VOBC needs to schedule the VOBC function block of the CBTC system and the VBTC system specific function block.
The system architecture is four:
when appType is equal to a value of 4, it indicates that the VOBC supports the CBTC level, the VBTC level, and the IL level. During each control cycle, the VOBC needs to schedule the VOBC function block of the CBTC system and the VBTC system specific function block.
A fifth system architecture:
when appType is equal to the value 5, it indicates that VOBC supports CBTC level, IL level. During each control cycle, the VOBC needs to schedule VOBC function blocks of the CBTC system.
A system architecture six:
when appType is equal to the value 6, it indicates that the VOBC supports the VBTC level, the IL level. During each control cycle, the VOBC needs to schedule the VOBC function block of the CBTC system and the VBTC system specific function block.
The system architecture is seven:
when appType is equal to the value of 7, it indicates that the VOBC supports the BM level, the IL level. During each control cycle, the VOBC needs to schedule VOBC function blocks of the CBTC system.
The system architecture is eight:
when appType is equal to the value of 8, it indicates that VOBC supports IL level. During each control cycle, the VOBC needs to schedule VOBC function blocks of the CBTC system.
The VOBC can adapt to urban rail transit signal system architectures with different application requirements by adapting the system architecture function configuration parameter appType.
In an exemplary embodiment, the third functional module is configured to obtain mobile authorization information at each operation level of the enhanced CBTC train control system, and control train operation by using the mobile authorization information; wherein:
under the CBTC level, the VOBC controls the train to run by using the movement authorization calculated by the ZC;
under the VBTC level, the VOBC controls the train to run by using the movement authorization calculated by the movement authorization calculation module of the VOBC;
under the BM level, the VOBC controls train operation using the mobile authorization computed by the OCS subsystem.
The work flow corresponding to each control level in the enhanced CBTC train control system is as follows:
the workflow of the CBTC level comprises the following steps:
under the CBTC level, the ATS sends route information to the OCS, the OCS performs route handling according to the interlocking relation and sends the route handling condition to the ZC, the ZC calculates the mobile authorization for each train according to the route handling condition and the position relation of the trains on the line and sends the mobile authorization to the VOBC, and the VOBC realizes automatic train operation and protection according to the mobile authorization.
And normal train operation tracking based on moving block can be realized under the CBTC level.
The work flow of the VBTC level comprises the following steps:
and under the VBTC level, the ATS sends destination information to the VOBC, the VOBC searches a running path according to the destination information, requests the OCS for line turnout operation and turnout state acquisition, acquires the position information of other trains through vehicle-vehicle communication, calculates the movement authorization according to the information, and accordingly realizes automatic running and protection of the trains.
And normal train operation tracking based on moving block can be realized under the VBTC level.
The work flow of BM level comprises:
under BM level, ATS sends route information to OCS, OCS handles route according to interlock relation and sends route information to VOBC through responder, VOBC realizes automatic operation and protection of train according to route.
And normal train operation tracking based on fixed block can be realized under the BM grade.
The workflow of the IL level includes:
under the IL level, the ATS sends route information to the OCS, the OCS performs route handling according to the interlocking relation, and a driver controls the train to run at the speed limited by the VOBC.
And the limited train operation tracking based on the fixed block can be realized under the IL level.
From the above workflow, it can be seen that the difference of each operation level of the enhanced CBTC train control system is mainly reflected in the calculation and use of the mobile authorization.
Under the CBTC level, the VOBC controls the train to run by using the movement authorization calculated by the ZC;
under the VBTC level, the VOBC controls the train to run by using the self-calculated movement authorization;
under the BM grade, the VOBC controls the train to run by using the mobile authorization calculated by the OCS subsystem;
under the IL level, the VOBC has no movement authorization, and the train operation can be controlled only by observing the state of the front signal machine by a driver.
The comparison result of the operation efficiency of each operation level of the enhanced CBTC train control system is as follows:
in the enhanced CBTC train control system, a CBTC grade and a VBTC grade adopt mobile blocking, a BM grade adopts fixed blocking, and an IL grade adopts fixed blocking. Therefore, the CBTC level and the VBTC level operate at the same efficiency and are greater than the BM level and the IL level. Since the IL level is a fixed block that limits the operating speed, the operating efficiency of the BM level is greater than the IL level.
In an exemplary embodiment, the third functional module is configured to perform a switching operation of an operation level between a VBTC level and at least one of a CBTC level, a BM level and an IL level.
The VBTC grade is a standby operation grade when the VOBC wireless module is normal and cannot be connected with the ZC equipment, and in order not to influence the operation efficiency, the enhanced CBTC train control system can realize the function of switching the operation grade supported by the CBTC system and the VBTC grade on line; wherein the CBTC system supports operation levels including a CBTC level, a BM level, and an IL level.
Based on the above workflow of each operation level, the biggest difference between the CBTC level and the VBTC level is the source of the mobile authorization information used by the vehicle-mounted device. Therefore, in the enhanced CBTC train control system, if the system equipment is configured according to the CBTC level and the VOBC is configured with the CBTC and VBTC level functions, the VOBC implements online switching between the CBTC level and the VBTC level as follows, including:
application scenario one
VOBC at IL level or BM level
When the operation grade is IL grade or BM grade, VOBC registers to ZC and OCS respectively, and requests to obtain the mobile authorization information of ZC and the mobile authorization information of mobile authorization calculation module of VOBC, at this time, VOBC is still in original grade;
a 1: if the valid moving authorization of the ZC and the VOBC moving authorization calculation module is received, the VOBC uses the moving authorization distributed by the ZC and changes the running grade into a CBTC grade;
a 2: if only valid mobile authorization of the ZC is received, the VOBC uses the mobile authorization allocated by the ZC and changes the running grade into a CBTC grade;
a 3: if only the valid moving authorization of the VOBC moving authorization calculation module is received, the VOBC uses the moving authorization distributed by the VOBC moving authorization calculation module and changes the running grade into a VBTC grade;
if the VOBC does not receive valid movement authorization of the ZC and VOBC movement authorization calculation module, the VOBC is still in the IL level or BM level.
Application scenario two
VOBC at VBTC level
b 1: when the operation level is the VBTC level, the VOBC registers to the ZC and requests to acquire the mobile authorization information of the ZC, and the VOBC is still at the VBTC level at the moment;
b 2: if the VOBC receives valid moving authorization of the ZC and the VOBC moving authorization calculation module, the VOBC uses the moving authorization allocated by the ZC and changes the running grade into a CBTC grade.
b 3: if the VOBC does not receive valid move authorization for the ZC, the VOBC is still at the VBTC level.
Application scenario three
When the operation grade is the CBTC grade, the VOBC registers to the OCS and requests the VOBC to move the mobile authorization information of the authorization calculation module, and at the moment, the VOBC is still at the CBTC grade;
c 1: if VOBC receives effective moving authorization of ZC, VOBC uses moving authorization distributed by ZC, VOBC running grade is in CBTC grade;
c 2: if the VOBC does not receive a valid move grant by the ZC and does not exceed a certain time (communication timeout decision time), the VOBC still stays at the CBTC level using the valid move grant last allocated by the ZC before.
c 3: if the VOBC does not receive the valid movement authorization of the ZC and exceeds the preset communication timeout judging time and receives the valid movement authorization of the VOBC movement authorization calculating module, the VOBC uses the valid movement authorization distributed by the VOBC movement authorization calculating module and changes the running grade into the VBTC grade.
Based on the control flow of the application scene, the purpose of carrying out grade conversion on the operation grade supported by the CBTC system on line can be realized.
In an exemplary embodiment, when system equipment is normal, the operation level of the enhanced CBTC train control system is switched among a CBTC level, a VBTC level, a BM level and an IL level;
when a ZC fails or is not configured, the operation level of the enhanced CBTC train control system is switched among a VBTC level, a BM level and an IL level;
when the wireless communication module of the VOBC fails or the wireless network of the DCS fails, the operation level of the enhanced CBTC train control system is switched between BM and IL levels;
and when the VOBC does not acquire the positioning information, the operation level of the enhanced CBTC train control system is the IL level.
According to the workflows with different operation levels in the enhanced CBTC train control system, the necessary equipment required under different operation levels is as follows:
CBTC grade: ATS, OCS, ZC, VOBC, DCS and responder;
VBTC grade: ATS, OCS, VOBC, DCS and responder;
BM grade: ATS, OCS, VOBC, DCS, LEU, responder, axle counting equipment and annunciator;
IL grade: ATS, OCS, VOBC, DCS, LEU, responder, axle counting equipment and annunciator.
Based on the minimum equipment configuration of each operation level of the enhanced CBTC train control system, the following contents can be obtained:
under the condition that system equipment is completely normal, the enhanced CBTC train control system supports the grades of CBTC, VBTC, BM and IL;
when a ZC fails or is not configured, the enhanced CBTC train control system supports VBTC, BM and IL grades;
the radio communication module of VOBC has fault or the radio network of DCS has fault, the enhanced CBTC train control system supports BM and IL grade;
the enhanced CBTC train control system supports IL levels when the VOBC does not acquire a position fix.
The enhancement type CBTC train control system provided by the embodiment of the application has the advantages that compared with the existing CBTC system or VBTC system, the enhancement type CBTC train control system has two operation levels based on mobile blocking, and the usability and the operation efficiency of the system are remarkably improved under the condition that the construction and maintenance cost is not changed. In addition, the system architecture of the VOBC is configured as the leading factor, so that the requirements of urban rail transit signal systems with various system principles can be met, the flexibility is high, and the quick response can be realized according to the requirements of users. And the train control system which realizes various architectures and principles according to the configuration information of the functional architecture meets different application requirements.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. An enhanced CBTC train control system comprises a train control CBTC system based on communication, wherein an OCS function of a train control VBTC system based on a vehicle is additionally arranged in an OCS subsystem of a target control server in the CBTC system; a vehicle-mounted controller VOBC in the CBTC system is additionally provided with a vehicle-mounted equipment function of the VBTC system which is unique compared with the CBTC system;
the operation levels of the enhanced CBTC train control system are sequentially a CBTC level, a VBTC level, a blocking mode BM level and an interlocking mode IL level according to degradation sequencing, wherein the operation efficiencies of the CBTC level and the VBTC level are the same, and the operation efficiencies of the BM level and the IL level are lower than those of the CBTC level and the VBTC level;
wherein the VOBC includes:
the first functional module is used for realizing VOBC function of the CBTC system;
the second functional module is used for realizing the unique vehicle-mounted equipment function of the VBTC system compared with the CBTC system;
the third functional module is used for realizing a mobile authorization use function of the enhanced CBTC train control system and a conversion function of an operation level in the enhanced CBTC train control system;
and the architecture management module is used for determining the combination of the operation levels supported by the enhanced CBTC train control system and controlling the starting of at least one of the first functional module, the second functional module and the third functional module according to the combination of the operation levels.
2. The system of claim 1, wherein:
the OCS function of the VBTC system comprises a line resource management function, a line train management function and a trackside resource management function;
the OCS function of the VBTC system is arranged on computer interlocking CI equipment of the CBTC system;
when the operation grade is a CBTC grade, a BM grade or an IL grade, the OCS subsystem executes a CI function; and when the operation grade is the VBTC grade, the OCS subsystem executes the OCS function of the VBTC system.
3. The system of claim 2, wherein the OCS subsystem performs the OCS functions of the VBTC system by:
after VOBC equipment is received to initiate a control request to an OCS subsystem, the OCS subsystem executes an OCS function of the VBTC system to respond to the control request.
4. The system of claim 1, wherein the vehicle-mounted device functions unique to the VBTC system over the CBTC system include a travel path search function, a car-to-car communication function, a mobile authorization calculation function, and a path resource management function.
5. The system of claim 1, wherein:
the third functional module is used for acquiring mobile authorization information under each operation level of the enhanced CBTC train control system and controlling the train to operate by using the mobile authorization information; wherein:
under the CBTC level, the VOBC controls the train to run by using the movement authorization calculated by the zone controller ZC;
under the VBTC level, the VOBC controls the train to run by using the movement authorization calculated by the movement authorization calculation module of the VOBC;
under the BM level, the VOBC controls train operation using the mobile authorization computed by the OCS subsystem.
6. The system of claim 1, wherein:
the third functional module is configured to perform a switching operation of an operation level between a VBTC level and at least one of a CBTC level, a BM level, and an IL level.
7. The system of claim 6, wherein:
when the operation grade is IL grade or BM grade, VOBC registers to ZC and OCS respectively, and requests to obtain the mobile authorization information of ZC and the mobile authorization information of mobile authorization calculation module of VOBC;
if the valid moving authorization of the ZC and the VOBC moving authorization calculation module is received, the VOBC uses the moving authorization distributed by the ZC and changes the running grade into a CBTC grade;
if only valid mobile authorization of the ZC is received, the VOBC uses the mobile authorization allocated by the ZC and changes the running grade into a CBTC grade;
if only valid movement authorization of the VOBC movement authorization calculation module is received, the VOBC uses the movement authorization allocated by the VOBC movement authorization calculation module and changes the running level to the VBTC level.
8. The system of claim 6, wherein:
when the operation level is the VBTC level, the VOBC registers to the ZC and requests to acquire the mobile authorization information of the ZC;
if the VOBC receives valid moving authorization of the ZC and the VOBC moving authorization calculation module, the VOBC uses the moving authorization allocated by the ZC and changes the running grade into a CBTC grade.
9. The system of claim 6, wherein:
when the operation grade is the CBTC grade, the VOBC registers to the OCS and requests the mobile authorization information of the VOBC mobile authorization calculation module;
if the VOBC does not receive the valid movement authorization of the ZC and exceeds the preset communication timeout judging time and receives the valid movement authorization of the VOBC movement authorization calculating module, the VOBC uses the valid movement authorization distributed by the VOBC movement authorization calculating module and changes the running grade into the VBTC grade.
10. The system according to any one of claims 6 to 9, wherein:
when system equipment is normal, the operation level of the enhanced CBTC train control system is converted among a CBTC level, a VBTC level, a BM level and an IL level;
when a ZC fails or is not configured, the operation level of the enhanced CBTC train control system is switched among a VBTC level, a BM level and an IL level;
when a wireless communication module of the VOBC has a fault or a wireless network of the data communication system DCS has a fault, the operation level of the enhanced CBTC train control system is switched between BM and IL levels;
and when the VOBC does not acquire the positioning information, the operation level of the enhanced CBTC train control system is the IL level.
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