WO2022142495A1 - 一种列车临时限速管理方法及系统 - Google Patents
一种列车临时限速管理方法及系统 Download PDFInfo
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- WO2022142495A1 WO2022142495A1 PCT/CN2021/119229 CN2021119229W WO2022142495A1 WO 2022142495 A1 WO2022142495 A1 WO 2022142495A1 CN 2021119229 W CN2021119229 W CN 2021119229W WO 2022142495 A1 WO2022142495 A1 WO 2022142495A1
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- speed limit
- temporary speed
- storage unit
- data storage
- temporary
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- 238000007726 management method Methods 0.000 title claims abstract description 33
- 238000013500 data storage Methods 0.000 claims abstract description 291
- 238000004891 communication Methods 0.000 claims abstract description 89
- 238000012544 monitoring process Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 14
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Classifications
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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
- B61L27/04—Automatic systems, e.g. controlled by train; Change-over to manual control
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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
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
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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
- B61L27/70—Details of trackside communication
Definitions
- the invention relates to the technical field of rail traffic signal safety control, in particular to a temporary speed limit management method for trains.
- the train automatic monitoring system, data storage unit and regional controller are the core parts of the train's temporary speed limit.
- the basic idea of the train temporary speed limit management method is: the train automatic monitoring system is responsible for the human-computer interaction, and issues the temporary speed limit command to the data storage unit, the temporary speed limit command includes the speed limit section position and speed limit speed; data storage The unit is responsible for uniformly storing and managing the temporary speed limit instructions; the regional controller requests the data storage unit for the temporary speed limit information of the track section within its jurisdiction, and generates a train control message and sends it to the train.
- Temporary speed limit command update the update operation includes setting a new speed limit command and canceling the existing temporary speed limit command.
- the data storage unit is restarted during operation.
- the system since the system has not fully entered the working state, in order to ensure the safe operation of the train, the system only allows the train to run at the lowest speed. If there is a temporary speed limit setting in the previous stage of restoration from the database, the system cannot guarantee that the restored speed limit command is manually verified.
- the track section covered by the updated temporary speed limit instruction may be located in the coverage area of different regional controllers, and there is a problem of consistent synchronization of multi-region controller commands.
- the temporary speed limit request information sent by the regional controller is not correctly received by the data storage unit, or the data storage unit responds with packet loss, etc., causing temporary disconnection problems. The data storage unit will lose the communication connection with the restarted area control.
- the purpose of the present invention is to provide a temporary speed limit management method for trains, which can ensure the consistency of the temporary speed limit commands of the cross-regional controllers and the timeliness coordination mechanism of each stage during the management of the temporary speed limit commands through the management of the temporary speed limit commands. .
- the present invention provides a temporary speed limit management method for trains.
- a communication session is established between an automatic train monitoring system and a data storage unit. After the communication session is opened, the automatic train monitoring system issues a temporary speed limit to the data storage unit.
- the data storage unit updates the temporary speed limit instruction; the regional controller periodically sends a temporary speed limit information request to the data storage unit, and during the update of the data storage unit, the data storage unit is prohibited from replying to the regional controller.
- Temporary speed limit information request after the update is completed, the data storage unit is allowed to reply to the regional controller's temporary speed limit information request.
- the data storage unit includes a temporary speed limit command permanent storage area and a temporary speed limit command temporary storage area, and the temporary speed limit command permanent storage area is used to store the temporary speed limit after the data storage unit successfully updates the temporary speed limit command.
- the data in the permanent storage area of the temporary speed limit command is synchronized to the system database, and the temporary speed limit command temporary storage area is used to temporarily store the temporary speed limit command received during the communication session.
- the temporary speed limit instruction at least includes: the coordinates of the first and last track sections of the speed limit section, the track section identifiers included in the speed limit section, and the speed limit rate.
- the type of the temporary speed limit instruction includes: setting the temporary speed limit and canceling the temporary speed limit, and the speed limit rate for canceling the temporary speed limit is 0.
- the data storage unit generates a temporary speed limit information reply message according to the temporary speed limit command stored in the permanent storage area of the temporary speed limit command, so as to reply to the temporary speed limit information request of the regional controller, and the regional controller receives the temporary speed limit information After the information reply message, the temporary speed limit information in the temporary speed limit information reply message is applied to the corresponding track section.
- the generation rule of the temporary speed limit information reply message is: according to the coordinates of the temporary speed limit command, the temporary speed limit command area is mapped to the corresponding track section, and the speed is set as the speed limit value. segment, the speed is set to the design maximum speed of the segment.
- the method for updating the temporary speed limit command by the data storage unit includes: the data storage unit calculates a list of regional controllers that need to synchronize the temporary speed limit command, the data storage unit generates a temporary speed limit update request and sends it to the corresponding regional controller, and the data The storage unit starts the update timer at the same time;
- the regional controller After receiving the temporary speed limit update request, the regional controller sends a temporary speed limit update reply to the data storage unit;
- the data storage unit receives the temporary speed limit update replies sent by all relevant regional controllers, the data storage unit successfully updates the temporary speed limit instruction, and the updated temporary speed limit instruction is updated.
- the speed limit command is stored in the temporary speed limit command permanent storage area.
- the data storage unit After the update timer of the data storage unit times out, the data storage unit fails to receive the temporary speed limit update replies sent by all relevant regional controllers, and the communication session fails to be closed.
- the count time of the update timer of the data storage unit is greater than or equal to twice the total time taken by the data storage unit to send the temporary speed limit update request and the area controller to send the temporary speed limit update reply message.
- the data storage unit After a communication session is successfully established between the automatic train monitoring system and the data storage unit, the data storage unit starts a session timer. The storage unit automatically closes the communication session, and refreshes the data in the temporary speed limit instruction temporary storage area to an invalid initial value.
- the counting time of the session timer of the data storage unit should ensure the longest time required for the automatic train monitoring system to successfully execute the normal temporary speed limit command operation.
- the zone controller starts the update timer while sending the temporary speed limit update reply, and after the zone controller's update timer times out, the zone controller does not receive the temporary speed limit information reply message sent by the data storage unit , the temporary speed limit on all track segments within the zone controller's jurisdiction is set to the initial temporary speed limit speed.
- the count time of the update timer of the area controller is greater than or equal to twice the period of the request for the temporary speed limit information sent by the area controller; the count time of the update timer of the area controller is greater than or equal to that of the data storage unit. Update the count time of the timer.
- the data storage unit When the data storage unit is powered on, it is set to a state where the initialization of the temporary speed limit instruction has not been released, and the regional controller cannot obtain valid temporary speed limit information from the data storage unit.
- a communication session is established between the automatic train monitoring system and the data storage unit.
- the automatic train monitoring system sends a temporary speed limit initialization release request to the data storage unit, and the data storage unit is released.
- the initialization state allows the zone controller to obtain temporary speed limit information from the data storage unit after the communication session is closed.
- the temporary speed limit instruction valid before power on is restored from the system database to the temporary speed limit permanent storage area.
- the temporary speed limit of the track section under its jurisdiction is set as the initial temporary speed limit speed.
- the automatic train monitoring system adopts the HILC protocol to establish a communication session with the data storage unit, and the operation of the temporary speed limit command.
- the regional controller periodically sends a version information request to the data storage unit, and after receiving the version information request, the data storage unit starts a communication valid timer, and after the communication valid timer times out, the data storage unit If the temporary speed limit update reply sent by the area controller that sends the version information request is not received, the data storage unit rejects the currently issued temporary speed limit instruction.
- the count time of the communication valid timer is equal to twice the period of the request for the temporary speed limit information sent by the regional controller.
- the regional controller When the regional controller receives the temporary speed limit information reply message sent by the data storage unit, it simultaneously starts the temporary speed limit information valid timer. After the temporary speed limit information valid timer expires, the regional controller does not After receiving the new temporary speed limit information reply message sent by the data storage unit, the temporary speed limit on all track sections within the jurisdiction of the regional controller is set as the initial temporary speed limit speed.
- the initialized temporary speed limit speed is the line minimum speed.
- the present invention also provides an automatic train monitoring system, the automatic train monitoring system establishes a communication session with the data storage unit, and after the communication session is opened, the automatic train monitoring system issues a temporary speed limit instruction to the data storage unit.
- the automatic train monitoring system adopts the HILC protocol to establish a communication session with the data storage unit, and the operation of the temporary speed limit command.
- the automatic train monitoring system After the communication session is opened, the automatic train monitoring system sends a temporary speed limit initialization release request to the data storage unit to release the initialization state of the data storage unit.
- the present invention also provides a data storage unit.
- the data storage unit receives a temporary speed limit instruction issued by the automatic train monitoring system.
- the data storage unit updates the temporary speed limit instruction.
- the data storage unit is prohibited from replying to the temporary speed limit information request sent by the regional controller.
- the data storage unit is allowed to reply to the request sent by the regional controller.
- the data storage unit includes a temporary speed limit command permanent storage area and a temporary speed limit command temporary storage area, and the temporary speed limit command permanent storage area is used to store the temporary speed limit after the data storage unit successfully updates the temporary speed limit command.
- the data in the permanent storage area of the temporary speed limit command is synchronized to the system database, and the temporary speed limit command temporary storage area is used to temporarily store the temporary speed limit command received during the communication session.
- the data storage unit generates a temporary speed limit information reply message according to the temporary speed limit command stored in the temporary speed limit command permanent storage area, so as to reply to the temporary speed limit information request of the regional controller.
- the method for updating the temporary speed limit command by the data storage unit includes: the data storage unit calculates a list of regional controllers that need to synchronize the temporary speed limit command, the data storage unit generates a temporary speed limit update request and sends it to the corresponding regional controller, and the data The storage unit starts the update timer at the same time;
- the data storage unit receives the temporary speed limit update replies sent by all relevant regional controllers, the data storage unit successfully updates the temporary speed limit instruction, and the updated temporary speed limit instruction is updated.
- the speed limit command is stored in the temporary speed limit command permanent storage area.
- the data storage unit After the update timer of the data storage unit times out, the data storage unit fails to receive the temporary speed limit update replies sent by all relevant regional controllers, and the communication session fails to be closed.
- the count time of the update timer of the data storage unit is greater than or equal to twice the total time taken by the data storage unit to send the temporary speed limit update request and the area controller to send the temporary speed limit update reply message.
- the data storage unit After a communication session is successfully established between the data storage unit and the automatic train monitoring system, the data storage unit starts a session timer. After the session timer expires, the data storage unit fails to close the communication session. The storage unit automatically closes the communication session, and refreshes the data in the temporary speed limit instruction temporary storage area to an invalid initial value.
- the counting time of the session timer of the data storage unit should ensure that the automatic train monitoring system can successfully execute the longest time-consuming operation of completing the normal temporary speed limit command operation.
- the data storage unit When the data storage unit is powered on, it is set to a state where the initialization of the temporary speed limit instruction has not been released, and the regional controller cannot obtain valid temporary speed limit information from the data storage unit.
- a communication session is established between the data storage unit and the train automatic monitoring system.
- the data storage unit receives the temporary speed limit initialization cancellation request issued by the train automatic monitoring system, and cancels the data storage.
- the initialization state of the unit which allows the zone controller to obtain temporary speed limit information from the data storage unit after the communication session is closed.
- the temporary speed limit instruction valid before power on is restored from the system database to the temporary speed limit permanent storage area.
- the data storage unit After the data storage unit receives the version information request sent by the regional controller, it starts the communication valid timer. The speed limit update reply, the data storage unit rejects the currently issued temporary speed limit command.
- the count time of the communication valid timer is equal to twice the period in which the zone controller sends the request for the temporary speed limit information.
- the present invention also provides a regional controller, the regional controller periodically sends a request for temporary speed limit information to a data storage unit, and after receiving the temporary speed limit information reply message, the regional controller sends the temporary speed limit information reply message The temporary speed limit information in is applied to the corresponding track segment.
- the area controller After receiving the temporary speed limit update request, the area controller sends a temporary speed limit update reply to the data storage unit.
- the zone controller starts the update timer while sending the temporary speed limit update reply, and after the zone controller's update timer times out, the zone controller does not receive the temporary speed limit information reply message sent by the data storage unit , the temporary speed limit on all track segments within the zone controller's jurisdiction is set to the initial temporary speed limit speed.
- the count time of the update timer of the area controller is greater than or equal to twice the period of the request for the temporary speed limit information sent by the area controller; the count time of the update timer of the area controller is greater than or equal to that of the data storage unit. Update the count time of the timer.
- the temporary speed limit of the track section under its jurisdiction is set as the initial temporary speed limit speed.
- the regional controller periodically sends a version information request to the data storage unit.
- the regional controller When the regional controller receives the temporary speed limit information reply message sent by the data storage unit, it simultaneously starts the temporary speed limit information valid timer, and after the temporary speed limit information valid timer expires, the regional controller does not receive If the new temporary speed limit information reply message is sent by the data storage unit, the temporary speed limit on all track sections within the jurisdiction of the regional controller is set as the initial temporary speed limit speed.
- the present invention also provides a train temporary speed limit management system, the train temporary speed limit management system includes the train automatic monitoring system, a data storage unit and an area controller.
- the invention adopts a unified session management framework to manage the temporary speed-limiting instructions, and by uniformly processing the temporary speed-limiting instructions in the session in the session closing stage, the consistency of the temporary speed-limiting instructions across the regional controllers is guaranteed to take effect, and the Disturbance of the system's processing of the temporary speed limit command.
- the present invention improves the availability and fault tolerance of the system for processing the temporary speed limit instruction by detecting the availability of the communication link.
- the present invention manages the life cycle of the temporary speed limit instruction by adding the timeliness mechanism of the message, which ensures the safe operation of the train when the system components fail, and improves the availability of the system.
- Figure 1 shows the temporary speed limit processing flow during system initialization.
- FIG. 2 is a flow chart of a temporary speed limit instruction update processing flow.
- Figure 3 shows the temporary speed limit processing flow when the zone controller restarts during operation.
- FIG. 4 is a flow of temporary speed limit processing when the data storage unit is restarted during operation.
- the technical problem to be solved by the present invention is to provide a systematic temporary speed limit processing method for system initialization temporary speed limit, temporary speed limit instruction update, regional controller restart, and data storage unit restart, which solves the problem of cross-border Consistency of the synchronization of the temporary speed limit command of the regional controller, and the management of the life cycle of the temporary speed limit command in the stages of system initialization, component restart, and command update.
- the present invention solves the disturbance of the train temporary speed limit control message caused by the above problems by designing a temporary speed limit management method for initializing the temporary speed limit release confirmation, communication verification, and time-effect coordination under the session management mechanism.
- the present invention provides a method for managing a temporary speed limit of a train, comprising: managing a temporary speed limit instruction by establishing a communication session between an automatic train monitoring system and a data storage unit.
- the data storage unit is set to the state where the initialization of the temporary speed limit instruction has not been released, and the regional controller cannot obtain valid temporary speed limit information from the data storage unit.
- the speed is the initial temporary speed limit speed.
- the automatic train monitoring system releases the initialization state of the data storage unit.
- the regional controller is allowed to obtain the temporary speed limit information from the data storage unit.
- the automatic train monitoring system sends the updated temporary speed limit command to the data storage unit, and during the communication session is closed, the data storage unit updates the temporary speed limit command , It is forbidden to reply to the temporary speed limit information request of the regional controller during the update of the data storage unit. After the data storage unit successfully updates the temporary speed limit command, it is allowed to reply to the temporary speed limit information request of the regional controller, and the regional controller is allowed to obtain from the data storage unit. Updated temporary speed limit information.
- the method for updating the temporary speed limit command by the data storage unit includes: the data storage unit calculates a list of regional controllers that need to synchronize the temporary speed limit command, the data storage unit generates a temporary speed limit update request and sends it to the corresponding regional controller, and the data The storage unit starts the update timer at the same time; after receiving the temporary speed limit update request, the regional controller sends a temporary speed limit update reply to the data storage unit; within the count time of the update timer of the data storage unit, the data storage When the unit receives the temporary speed limit update replies sent by all relevant regional controllers, the data storage unit successfully updates the temporary speed limit command, and stores the updated temporary speed limit command in the temporary speed limit command permanent storage area.
- FIG. 1 is a schematic flowchart of system initialization.
- the data storage unit is used to store the temporary speed limit instruction issued by the train automatic monitoring system and the temporary speed limit information request of the coordinated management area controller.
- the data storage unit divides the memory into a permanent storage area for temporary speed limit instructions and a temporary storage area for temporary speed limit instructions during a session.
- the data stored in the permanent storage area for temporary speed limit instructions changes, it will be synchronized to the hardware platform database.
- the configuration data is the driver configuration loaded after the data storage unit is powered on, and the memory recovery function uses a Boolean switch control.
- the Boolean configuration is true, the temporary speed limit command stored in the platform database will be loaded after power on, and vice versa. does not load.
- the data storage unit is in the stage where the initialization of the temporary speed limit instruction has not been released.
- the temporary speed limit of the track section under its jurisdiction is set to the initial temporary speed limit speed.
- the speed value is the minimum speed of the line.
- the regional controller sends a request for temporary speed limit information to the data storage unit, and obtains the temporary speed limit information on the track section under the jurisdiction of the current region.
- the regional controller sends a temporary speed limit information request to the data storage unit, and will receive a temporary speed limit information reply message containing an invalid version.
- the speed limit information will not be applied to the track section by the zone controller.
- the version information in the reply information is used to distinguish the validity of the reply information.
- the zone controller will use the current internal Temporary speed limit in effect, ignoring reply messages.
- the automatic train monitoring system cancel the initial restriction on the temporary speed limit command by the system. (The operator passes) the automatic train monitoring system to issue a session opening command to the data storage unit.
- the session management adopts the HILC protocol.
- the automatic train monitoring system receives the return message that the session is correctly opened from the data storage unit, the automatic train monitoring system sends an initialization instruction to the data storage unit to release the temporary speed limit, and the system will release the temporary speed limit.
- Operational restrictions. Among them, the HILC protocol is a special protocol for the communication between safety devices and non-safety devices. The protocol uses a secondary confirmation method to ensure communication security. First, the sender sends a request to the receiver. After the receiver receives it, it sends a secure clock message to the sender.
- the receiver After receiving the clock confirmation message from the sender within the specified time, the receiver starts to respond to the original sender request, and sends the corresponding function return code to the sender according to the response result (success/failure).
- the data storage unit successfully releases the initialization restriction of the temporary speed limit instruction, it returns a correct release return message to the automatic train monitoring system.
- the end of the automatic train monitoring system sends a close session request to the data storage unit, and the data storage unit returns a correct closing return message to the automatic train monitoring system.
- the regional controller After the session is successfully closed, the regional controller periodically sends a temporary speed limit information request to the data storage unit, and the data storage unit will generate a reply message according to the temporary speed limit command stored in the permanent storage area of the temporary speed limit command.
- the generation rule of the reply message is: map the temporary speed limit command area to the corresponding track section according to the coordinates of the temporary speed limit command, and set the speed to the speed limit value. For the track section without temporary speed limit set, the speed is set to Section design top speed.
- the regional controller After receiving the correct temporary speed limit information reply message, the regional controller applies the temporary speed limit information in the reply message to the corresponding track section, and releases the initial temporary speed limit speed limit on the track section.
- FIG. 2 is a schematic diagram of a temporary speed limit instruction update.
- the automatic train monitoring system opens a session to release the system's restriction on modifying the temporary speed limit command on the automatic train monitoring system end.
- the data storage unit After the data storage unit successfully opens the session, it starts the session timer, sets the timeout time, and starts timing.
- the train automatic monitoring system sets a temporary speed limit command and sends it to the data storage unit.
- the complete temporary speed limit command includes the coordinates of the track section at the beginning and end of the speed limit section, the track section identifiers contained in the speed limit section, and the speed limit rate.
- the types of temporary speed limit commands can be divided into setting temporary speed limit and canceling temporary speed limit. The speed at which the temporary speed limit command is canceled is 0.
- the data storage unit first checks whether the speed in the temporary speed limit command is 0, if it is 0, an error is reported, and then it checks where the temporary speed limit section is located. Whether the communication connection between the regional controller and the data storage unit is valid, if there is an invalid communication link, the setting request will be discarded, and the unsuccessful setting will be reported to the automatic train monitoring system. If the communication is normal, check whether the track sections in the speed limit section in the temporary speed limit command are physically continuous. If not, an error will be reported. Otherwise, the temporary speed limit section will be mapped to the corresponding track section. Then check whether the mapping result overlaps with the existing temporary speed limit section.
- the request is discarded, and it is reported to the automatic train monitoring system that the setting is unsuccessful. Otherwise, update the temporary speed limit command on the track section to the temporary speed limit command temporary storage area, and report to the automatic train monitoring system that the setting is successful.
- the data storage unit verifies whether the speed in the temporary speed limit command is 0, and if it is not 0, an error is reported. Then, an interval overlap check is performed to check whether there is a speed limit section of the existing temporary speed limit command that completely coincides with the forward or reverse sequence of the speed limit section in the current temporary speed limit command. If it does not exist, the existing current request will be discarded, and the failure of the setting will be reported to the automatic train monitoring system; if it exists, the current speed limit command will be mapped to the track section, and the temporary speed limit command temporary storage area will be updated with the mapping result. corresponding data.
- the data storage unit In the session closing stage, the data storage unit firstly verifies the validity of the session closing request to prevent the session closing request message from being distorted due to abnormal communication, and to prevent the data storage unit from receiving the data sent by the automatic train monitoring system not to which it belongs. Session close request. If the session close request is invalid, the close request is discarded. If the session close request is valid, the data storage unit calculates the list of regional controllers that need to synchronize the temporary speed limit command, generates a temporary speed limit update request and sends it to the corresponding regional controller, starts the temporary speed limit update timer on the data storage unit side, and counts down Time out and wait for the temporary rate limit update reply message from the zone controller.
- the regional controller After receiving a valid temporary speed limit update request, the regional controller starts the temporary speed limit update timer on the regional controller side, and sends a temporary speed limit update reply message to the data storage unit at the same time.
- the data storage unit side if the data storage unit receives the temporary speed limit update reply messages sent by all the regional controllers that need to synchronize the temporary speed limit command before the temporary speed limit update timer expires, the session is successfully closed: Apply the temporary speed limit command to synchronize the temporary speed limit command to the temporary speed limit command permanent storage area; if the temporary speed limit update timer has expired, the data storage unit has not yet received all the temporary speed limit update messages from the regional controllers.
- the session close failure operation is executed: the temporary speed limit command is not synchronized to the temporary speed limit command permanent storage area. If within the validity period of the session timer, the data storage unit does not perform a successful session closing operation, and the session timer expires, the data storage unit automatically closes the session and refreshes the temporary speed limit instruction temporary storage area data to an invalid initial value. On the side of the regional controller, if the temporary speed limit update timer that it has started expires and no valid reply message for the temporary speed limit information request has been received, it will lead to the safe side and transfer all track sections within the jurisdiction of the regional controller to the The temporary speed limit is set to the initial value, limiting trains from overspeeding on track sections.
- the count time set by the session timer of the data storage unit is greater than the count time set by the temporary speed limit update timer of the regional controller, and the temporary speed limit update timer of the regional controller.
- the set count time is greater than the count time set by the temporary speed limit update timer of the data storage unit;
- Temporary speed limit update request and reply temporary speed limit update reply message is twice the maximum total time taken, and the count time set by the zone controller's temporary speed limit update timer should be greater than or equal to the period of the zone controller sending the temporary speed limit information request.
- the count time set by the temporary speed limit update timer of the zone controller is greater than the count time set by the temporary speed limit update timer of the data storage unit, in order to ensure that the temporary speed limit command is updated during the update period.
- the temporary speed limit of the line will not be set to the lowest speed due to the unexpected timeout of the temporary speed limit update timer; the count time of the session timer of the data storage unit is set to the maximum for the smooth operation of the operation.
- the session closing stage after the data storage unit sends the temporary speed limit update request, the data storage unit enters the temporary speed limit instruction update period.
- the data storage unit is prohibited from sending a reply message for the temporary speed limit information request to the regional controller, and does not resume responding to the temporary speed limit information request sent by the regional controller until the session is closed.
- the data storage unit replies to the received request for temporary speed limit information, calculates the temporary speed limit information on the track section, and sends it to the requesting regional controller. If after the session is closed, the update timer on the regional controller side still does not receive a valid temporary speed limit message reply, the temporary speed limit will be set as the line's lowest speed.
- Fig. 3 is a schematic diagram of the processing of the temporary speed limit command when the zone controller restarts during operation.
- the zone controller is in the restart phase and has lost communication with the data storage unit.
- the regional controller Before disconnecting from the data storage unit, the regional controller periodically sends a version information request to the data storage unit, and after the data storage unit receives the version information request, starts the communication valid timer.
- the function of the version information request in the management of the temporary speed limit is to detect whether the communication between the regional controller and the data storage unit is normal, so as to improve the availability of the system.
- the count time set by the communication valid timer is for the regional controller to send the temporary speed limit. Twice the period of the information request.
- the automatic train monitoring system sends a temporary speed limit command to the data storage unit, and the temporary speed limit command will be updated to the temporary speed limit command temporary storage area, waiting for the session to be closed, do Close operation processing. If the communication valid timer has timed out during the restart phase of the regional controller, the data storage unit rejects the currently issued temporary speed limit instruction, and sends an operation failure instruction to the automatic train monitoring system.
- the temporary speed limit update request sent by the data storage unit to the zone controller will be Unable to get a response
- the data storage unit waits for the temporary speed limit update timer to expire, and sends the function return code of session closing failure to the automatic train monitoring system, and waits for the session timer to expire, and refreshes the speed limit in the temporary speed limit command temporary storage area. instruction.
- the temporary speed limit update request sent by the data storage unit to the zone controller will be get a response.
- the data storage unit first synchronizes the temporary speed limit command in the temporary speed limit command temporary storage area to the permanent storage area, and finally synchronizes it to the zone controller through the temporary speed limit request to release the low speed limit on the track section after the zone controller is restarted.
- FIG. 4 is a schematic diagram of the processing of the temporary speed limit instruction when the data storage unit is restarted during operation.
- the data storage unit is in the restarting stage, and the area controller loses the communication connection with the data storage unit (the loss of communication connection here means that the area controller and the data storage unit are offline due to the device offline, and the messages sent by one party to the other party cannot be processed. processing), the regional controller starts the effective timer of the temporary speed limit information based on the last successful receipt of the temporary speed limit information reply message.
- the valid temporary speed limit information reply message has a life cycle, and the life cycle should be greater than the period of two temporary speed limit information requests.
- the validity period timer corresponding to the life cycle of the speed command is set. Within the validity period, it means that the speed limit command is valid.
- the existing temporary speed limit command expires, and the regional controller temporarily restricts the speed of the track section under its jurisdiction.
- the value is set to the initial speed limit value, that is, the minimum speed of the line to ensure the safe running of the train.
- the temporary speed limit command valid before the restart will be restored from the hardware platform database to the temporary speed limit permanent storage area.
- the automatic train monitoring system sends a temporary speed limit initialization cancellation request to the data storage unit. After the data storage unit successfully deinitializes the temporary speed limit, the data storage unit starts to reply to the regional controller for the temporary speed limit information request.
- the method of the present invention uses "session management" to manage the temporary speed limit operation of the train. After the session is opened, the operation is allowed to set or cancel the temporary speed limit of the train, and the modified temporary speed limit instruction is stored in the data storage unit. When the session is closed, the data storage unit sends a temporary speed limit update request to the regional controller involved in the temporary speed limit command to detect whether the communication is normal. When the data storage unit receives a valid detection response within the specified time range, it uniformly sets the temporary speed limit commands in the session to the applicable state, and waits for the regional controller to request the temporary speed limit information in the applicable state.
- the present invention has the following advantages:
- the present invention uses "session management" to manage the temporary speed limit operation of the train. After the session is opened, the operation is allowed to set or cancel the temporary speed limit of the train, and the modified temporary speed limit instruction is stored in the session of the data storage unit. , by prohibiting the data storage unit from replying to the temporary speed limit information request of the regional controller during the update of the temporary speed limit command, and testing the validity of the communication between the data storage unit and the regional controller involved in the temporary speed limit command.
- the temporary speed limit commands in Takes effect on some regional controllers.
- the present invention adds the timeliness management of the temporary speed limit command. By setting valid timers at each stage of the temporary speed limit command management, an overtime processing mechanism is defined. The mechanism follows the principle of fault-oriented safety and ensures the coordination of the setting of the temporary speed limit command. and safe operation of trains.
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Abstract
一种列车临时限速管理方法，采用统一的会话管理框架，来管理临时限速指令，通过在会话关闭阶段，统一处理会话中的临时限速指令，保证了跨区域控制器的临时限速指令的一致性生效，避免了系统对临时限速指令处理的紊乱。通过通信链路可用性探测，提高了系统对临时限速指令处理的可用性和容错性。通过加入消息的时效性机制对临时限速指令进行生命周期管理，保证了系统组件故障时列车的安全运行，提高了系统的可用性。还提供一种列车临时限速管理系统、一种列车自动监控系统、一种数据存储单元和一种区域控制器。
Description
本发明涉及轨道交通信号安全控制技术领域，尤其涉及一种列车临时限速管理方法。
列车自动监控系统、数据存储单元和区域控制器是列车临时限速的核心部分。列车临时限速管理方法的基本思想是：由列车自动监控系统负责人机交互，下发临时限速指令到数据存储单元，该临时限速指令包括限速区段位置和限速速度；数据存储单元负责统一存储和管理临时限速指令；区域控制器向数据存储单元请求其辖区内轨道区段的临时限速信息，并生成列车的控制报文下发到列车。
在实际运营中可能存在如下情形：
1、系统初始化时，临时限速指令的管理。
2、临时限速指令更新，更新操作包括设置新的限速指令和取消现有临时限速指令。
3、运营中区域控制器重启。
4、运营中数据存储单元重启。
上述场景中，由于系统未完全进入工作状态，为保障列车安全运行，系统只允许列车以最低配速状态运行。若存在从数据库恢复上阶段临时限速设置，则系统无法保证恢复的限速指令得到人工校验。更新的临时限速指令覆盖轨道区段可能位于不同区域控制器覆盖区间，存在多区域控制器指令一致性同步问题。运行期间由于网络问题，区域控制器发送的临时限速请求信息未被数据存储单元正确接收，或者数据存储单元回复信息丢包等引起暂时性失联问题。数据存储单元将与重启的区域控制失去通信连接，此时将无法同步临时限速指令到该区域控制器，存在临时限速指令是否允许开放设置问题，区域控制器与数据存储单元的通信有效性检测问题。区域控制器将无法从重启中的数据存储单元得到同步的临时限速控制报文，区域控制器面临临 时限速控制报文时效性管理问题。
发明的公开
本发明的目的在于提供一种列车临时限速管理方法，通过对临时限速指令的管理保证跨区域控制器的临时限速指令的一致性以及临时限速指令管理期间各阶段的时效性协调机制。
为了达到上述目的，本发明提供一种列车临时限速管理方法，列车自动监控系统和数据存储单元之间建立通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速指令，在通信会话关闭过程中，数据存储单元更新临时限速指令；区域控制器向数据存储单元周期性发送临时限速信息请求，在数据存储单元更新期间，数据存储单元禁止回复区域控制器的临时限速信息请求；在更新完闭后，数据存储单元允许回复区域控制器的临时限速信息请求。
所述数据存储单元包含临时限速指令永久存储区和临时限速指令暂存区，所述临时限速指令永久存储区用于存储所述数据存储单元成功更新临时限速指令后的临时限速指令，所述临时限速指令永久存储区内的数据同步至系统数据库，所述临时限速指令暂存区用于临时存储通信会话期间收到的临时限速指令。
所述临时限速指令至少包含：限速区段首尾轨道区段坐标、限速区段包含的轨道区段标识、以及限速速率。
所述临时限速指令的类型包含：设置临时限速和取消临时限速，所述取消临时限速的限速速率为0。
所述数据存储单元根据临时限速指令永久存储区内存储的临时限速指令生成临时限速信息回复消息，以回复区域控制器的临时限速信息请求，所述区域控制器收到临时限速信息回复消息之后，将临时限速信息回复消息中的临时限速信息应用的到相应的轨道区段上。
所述临时限速信息回复消息的生成规则为：根据临时限速指令坐标将临时限速指令区域映射到对应的轨道区段上，速度设置为限速值，对于未设置临时限速的轨道区段，速度设置为区段设计最高时速。
所述数据存储单元更新临时限速指令的方法包含：所述数据存储单元计 算需要同步临时限速指令的区域控制器列表，数据存储单元生成临时限速更新请求发送到对应的区域控制器，数据存储单元同时开启更新计时器；
所述区域控制器收到临时限速更新请求后，向数据存储单元发送临时限速更新回复；
在所述数据存储单元的更新计时器的计数时间内，数据存储单元接收到所有相关的区域控制器发送的临时限速更新回复，则数据存储单元成功更新临时限速指令，将更新后的临时限速指令存储至临时限速指令永久存储区。
在所述数据存储单元的更新计时器超时后，数据存储单元未接收到所有相关的区域控制器发送的临时限速更新回复，则通信会话关闭失败。
所述数据存储单元的更新计时器的计数时间大于等于所述数据存储单元发送临时限速更新请求和所述区域控制器发送临时限速更新回复消息的总耗时的两倍。
所述列车自动监控系统和所述数据存储单元之间成功建立通信会话后，所述数据存储单元启动会话计时器，在所述会话计时器超时后，数据存储单元执行通信会话关闭失败，则数据存储单元自动关闭通信会话，并将临时限速指令暂存区内的数据刷新为无效的初始值。
所述数据存储单元的会话计时器的计数时间应保证列车自动监控系统端能够顺利执行完成正常的临时限速命令操作的最长耗时。
所述区域控制器在发送临时限速更新回复的同时，开启更新计时器，在所述区域控制器的更新计时器超时后，区域控制器未收到数据存储单元发送的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
所述区域控制器的更新计时器的计数时间大于等于所述区域控制器发送临时限速信息请求的周期的两倍；所述区域控制器的更新计时器的计数时间大于所述数据存储单元的更新计时器的计数时间。
所述数据存储单元在上电时，设置为临时限速指令初始化未解除状态，区域控制器无法从所述数据存储单元获取有效的临时限速信息。
所述数据存储单元上电后，列车自动监控系统和数据存储单元之间建立通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速初始化解除请求，解除数据存储单元的初始化状态，在通信会话关闭后， 允许区域控制器从数据存储单元获取临时限速信息。
所述数据存储单元上电后，从系统数据库恢复上电前有效的临时限速指令到临时限速永久存储区。
所述区域控制器上电后，将所辖轨道区段的临时限速设置为初始化临时限速速度。
所述列车自动监控系统采用HILC协议建立与所述数据存储单元之间的通信会话、以及临时限速命令的操作。
所述区域控制器周期性的向所述数据存储单元发送版本信息请求，所述数据存储单元接收到版本信息请求后，开启通信有效计时器，在所述通信有效计时器超时后，数据存储单元未接收到发送版本信息请求的区域控制器发送的临时限速更新回复，则数据存储单元拒绝当前下发的临时限速指令。
所述通信有效计时器的计数时间等于所述区域控制器发送临时限速信息请求的周期的两倍。
所述区域控制器在收到所述数据存储单元发送的临时限速信息回复消息时，同时开启临时限速信息有效计时器，在所述临时限速信息有效计时器超时后，区域控制器未收到数据存储单元发送的新的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
所述初始化临时限速速度为线路最低配速。
本发明还提供一种列车自动监控系统，所述列车自动监控系统建立与数据存储单元之间的通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速指令。
所述列车自动监控系统采用HILC协议建立与所述数据存储单元之间的通信会话、以及临时限速命令的操作。
在通信会话开启后，所述列车自动监控系统向数据存储单元下发临时限速初始化解除请求，解除数据存储单元的初始化状态。
本发明还提供一种数据存储单元，在与列车自动监控系统的通信会话开启后，所述数据存储单元接收列车自动监控系统下发的临时限速指令，在通信会话关闭过程中，所述数据存储单元更新临时限速指令，在数据存储单元更新期间，所述数据存储单元禁止回复区域控制器发送的临时限速信息请 求，在更新完成后，所述数据存储单元允许回复区域控制器发送的临时限速信息请求。
所述数据存储单元包含临时限速指令永久存储区和临时限速指令暂存区，所述临时限速指令永久存储区用于存储所述数据存储单元成功更新临时限速指令后的临时限速指令，所述临时限速指令永久存储区内的数据同步至系统数据库，所述临时限速指令暂存区用于临时存储通信会话期间收到的临时限速指令。
所述数据存储单元根据临时限速指令永久存储区内存储的临时限速指令生成临时限速信息回复消息，以回复区域控制器的临时限速信息请求。
所述数据存储单元更新临时限速指令的方法包含：所述数据存储单元计算需要同步临时限速指令的区域控制器列表，数据存储单元生成临时限速更新请求发送到对应的区域控制器，数据存储单元同时开启更新计时器；
在所述数据存储单元的更新计时器的计数时间内，数据存储单元接收到所有相关的区域控制器发送的临时限速更新回复，则数据存储单元成功更新临时限速指令，将更新后的临时限速指令存储至临时限速指令永久存储区。
在所述数据存储单元的更新计时器超时后，数据存储单元未接收到所有相关的区域控制器发送的临时限速更新回复，则通信会话关闭失败。
所述数据存储单元的更新计时器的计数时间大于等于所述数据存储单元发送临时限速更新请求和区域控制器发送临时限速更新回复消息的总耗时的两倍。
所述数据存储单元和列车自动监控系统之间成功建立通信会话后，所述数据存储单元启动会话计时器，在所述会话计时器超时后，数据存储单元执行通信会话关闭失败，则所述数据存储单元自动关闭通信会话，并将临时限速指令暂存区内的数据刷新为无效的初始值。
所述数据存储单元的会话计时器的计数时间应保证列车自动监控系统能够顺利执行完成正常的临时限速命令操作的最长耗时。
所述数据存储单元在上电时，设置为临时限速指令初始化未解除状态，区域控制器无法从所述数据存储单元获取有效的临时限速信息。
所述数据存储单元上电后，数据存储单元和列车自动监控系统之间建立通信会话，在通信会话开启后，数据存储单元接收列车自动监控系统下发的 临时限速初始化解除请求，解除数据存储单元的初始化状态，在通信会话关闭后，允许区域控制器从数据存储单元获取临时限速信息。
所述数据存储单元上电后，从系统数据库恢复上电前有效的临时限速指令到临时限速永久存储区。
所述数据存储单元接收到区域控制器发送的版本信息请求后，开启通信有效计时器，在所述通信有效计时器超时后，数据存储单元未接收到发送版本信息请求的区域控制器发送的临时限速更新回复，则数据存储单元拒绝当前下发的临时限速指令。
所述通信有效计时器的计数时间等于区域控制器发送临时限速信息请求的周期的两倍。
本发明还提供一种区域控制器，所述区域控制器向数据存储单元周期性发送临时限速信息请求，所述区域控制器收到临时限速信息回复消息之后，将临时限速信息回复消息中的临时限速信息应用的到相应的轨道区段上。
所述区域控制器收到临时限速更新请求后，向数据存储单元发送临时限速更新回复。
所述区域控制器在发送临时限速更新回复的同时，开启更新计时器，在所述区域控制器的更新计时器超时后，区域控制器未收到数据存储单元发送的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
所述区域控制器的更新计时器的计数时间大于等于所述区域控制器发送临时限速信息请求的周期的两倍；所述区域控制器的更新计时器的计数时间大于所述数据存储单元的更新计时器的计数时间。
所述区域控制器上电后，将所辖轨道区段的临时限速设置为初始化临时限速速度。
所述区域控制器周期性的向数据存储单元发送版本信息请求。
所述区域控制器在收到数据存储单元发送的临时限速信息回复消息时，同时开启临时限速信息有效计时器，在所述临时限速信息有效计时器超时后，区域控制器未收到数据存储单元发送的新的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
本发明还提供一种列车临时限速管理系统，所述列车临时限速管理系统包含所述列车自动监控系统、数据存储单元和区域控制器。
本发明采用统一的会话管理框架，来管理临时限速指令，通过在会话关闭阶段，统一处理会话中的临时限速指令，保证了跨区域控制器的临时限速指令的一致性生效，避免了系统对临时限速指令处理的紊乱。本发明通过通信链路可用性探测，提高了系统对临时限速指令处理的可用性和容错性。本发明通过加入消息的时效性机制对临时限速指令进行生命周期管理，保证了系统组件故障时列车的安全运行，提高了系统的可用性。
附图的简要说明
图1为系统初始化时的临时限速处理流程。
图2为临时限速指令更新处理流程。
图3为运行期间区域控制器重启时的临时限速处理流程。
图4为运行期间数据存储单元重启时的临时限速处理流程。
实现本发明的最佳方式
以下根据图1～图4，具体说明本发明的较佳实施例。
本发明所要解决的技术问题，是提供一种对系统初始化临时限速、临时限速指令更新、区域控制器重启以及数据存储单元重启时，系统性的临时限速处理方法，通过这个方法解决跨区域控制器的临时限速指令同步的一致性问题，以及系统初始化、组件重启、指令更新等阶段的临时限速指令生命周期的管理问题。本发明通过在会话管理机制下，设计初始化临时限速解除确认、通信校验、时效协调的临时限速管理方法来解决上述问题带来的列车临时限速控制报文的响应紊乱。
本发明提供一种列车临时限速管理方法，包含：通过在列车自动监控系统与数据存储单元之间建立通信会话来管理临时限速指令。
一方面，在系统初始化时，数据存储单元设置为临时限速指令初始化未解除状态，区域控制器无法从数据存储单元获取有效的临时限速信息，区域控制器设置所辖轨道区段的临时限速为初始化临时限速速度，在通信会话开启后，列车自动监控系统解除数据存储单元的初始化状态，在通信会话关闭 后，允许区域控制器从数据存储单元获取临时限速信息。
另一方面，在更新临时限速指令时，在通信会话开启后，列车自动监控系统向数据存储单元下发更新的临时限速指令，在通信会话关闭过程中，数据存储单元更新临时限速指令，数据存储单元更新期间禁止回复区域控制器的临时限速信息请求，数据存储单元成功更新临时限速指令后，允许回复区域控制器的临时限速信息请求，允许区域控制器从数据存储单元获取更新后的临时限速信息。
所述数据存储单元更新临时限速指令的方法包含：所述数据存储单元计算需要同步临时限速指令的区域控制器列表，数据存储单元生成临时限速更新请求发送到对应的区域控制器，数据存储单元同时开启更新计时器；所述区域控制器收到临时限速更新请求后，向数据存储单元发送临时限速更新回复；在所述数据存储单元的更新计时器的计数时间内，数据存储单元接收到所有相关的区域控制器发送的临时限速更新回复，则数据存储单元成功更新临时限速指令，将更新后的临时限速指令存储至临时限速指令永久存储区。
图1是系统初始化的流程示意图。数据存储单元用于存储列车自动监控系统下发的临时限速指令和协调管理区域控制器的临时限速信息请求。数据存储单元在软件层面，将内存分为临时限速指令永久存储区域和会话期间临时限速指令暂存区，临时限速指令永久存储区存储的数据发生改变时，将同步到硬件平台数据库。数据存储单元上电后，根据配置数据中是否应用记忆恢复功能的配置字段，决定是否加载数据库中存储的临时限速指令到临时限速指令永久储存区。其中，配置数据是数据存储单元上电后加载的驱动配置，记忆恢复功能使用一个布尔开关量控制，当该布尔量配置为真时，上电后加载平台数据库存储的临时限速指令，反之则不加载。初始化完成后，数据存储单元处于临时限速指令初始化尚未解除阶段。
区域控制器上电后将所辖轨道区段的临时限速设置为初始化临时限速速度，通常区域控制器配置数据中，该速度值是线路最低配速。区域控制器向数据存储单元发送临时限速信息请求，获取当前区域内所管辖的轨道区段上面的临时限速信息。在数据存储单元尚处于临时限速指令初始化尚未解除阶段，区域控制器向数据存储单元发送的临时限速信息请求，将得到含有无效版本的临时限速信息回复报文，此报文中的临时限速信息不会被区域控制器 应用到轨道区段，其中，回复信息中的版本信息用于区分回复消息的有效性，当回复信息中含有无效的版本信息时，区域控制器将使用当前内部生效的临时限速，忽略掉回复信息。
解除系统对临时限速指令的初始化限制。(操作员通过)列车自动监控系统向数据存储单元下发开启会话指令。会话管理采用HILC协议，当列车自动监控系统收到数据存储单元发送的会话正确开启的返回消息后，列车自动监控系统端向数据储存单元下发解除临时限速初始化指令，解除系统对临时限速操作的限制。其中，HILC协议为安全设备和非安全设备通信的专用协议，协议采用二次确认的方式保证通信安全，首先发送端向接收端发送请求，接收端收到后，向发送端发送安全时钟消息，以确认请求的有效性，接收端在规定的时间内收到发送端的时钟确认消息后，开始响应最初的发送端请求，并根据响应结果(成功/失败)向发送端发送对应的功能返回码。数据存储单元成功解除临时限速指令初始化限制之后，向列车自动监控系统返回正确解除返回消息。最后列车自动监控系统端向数据存储单元发送关闭会话请求，数据存储单元向列车自动监控系统返回正确关闭返回消息。在会话成功关闭之后，区域控制器端向数据存储单元周期性发送临时限速信息请求，数据存储单元将根据临时限速指令永久存储区存储的临时限速指令生成回复报文。回复报文的生成规则为：根据临时限速指令坐标将临时限速指令区域映射到对应的轨道区段上，速度设置为限速值，对于未设置临时限速的轨道区段，速度设置为区段设计最高时速。区域控制器收到正确的临时限速信息回复报文之后，将回复报文中的临时限速信息应用的到相应的轨道区段上，解除轨道区段上的初始化临时限速速度限制。
图2是临时限速指令更新的示意图。首先，列车自动监控系统开启会话，用以解除系统对列车自动监控系统端修改临时限速指令的限制。数据存储单元成功开启会话后，启动会话计时器，设置超时时间，开始计时。然后，列车自动监控系统设置临时限速指令并下发到数据存储单元。完整的临时限速指令包括限速区段首尾轨道区段坐标、限速区段包含的轨道区段标识、以及限速速率，临时限速指令的类型可分为设置临时限速和取消临时限速，其中，取消临时限速指令的速率为0。
若下发到数据存储单元的临时限速指令为设置临时限速，数据存储单元首先检查临时限速指令中的速率是否为0，若为0，则报错，然后再检查临时限速区段所在区域控制器与数据存储单元的通信连接是否有效，若存在无效的通信链，则丢弃设置请求，并向列车自动监控系统反馈设置不成功。若通信均正常，则检查临时限速指令中限速区段内的轨道区段是否在物理上连续，若不连续则报错，否则将临时限速区段映射到对应的轨道区段上。再检查该映射结果是否与已有的临时限速区段有重叠部分，若存在重叠部分，则丢弃请求，并向列车自动监控系统反馈设置不成功。否则更新轨道区段上的临时限速指令到临时限速指令暂存区，并向列车自动监控系统反馈设置成功。
若下发到数据存储单元的临时限速指令为取消已有临时限速，数据存储单元校验临时限速指令中的速率是否为0，若不为0，则报错。然后做区间重叠性检查，检查是否存在现有的临时限速指令的限速区段与当前临时限速指令中限速区段的正序或者反序完全重合。若不存在，则丢弃现有当前请求，并向列车自动监控系统反馈设置不成功；若存在，则将当前限速指令映射到轨道区段上，并用映射结果更新临时限速指令暂存区的对应数据。
在会话关闭阶段，数据存储单元首先校验会话关闭请求的有效性，防止会话关闭请求报文因通信异常造成的报文失真，并防止数据存储单元接收到非其所属的列车自动监控系统发送的会话关闭请求。若会话关闭请求无效，则丢弃关闭请求。若会话关闭请求有效，则数据存储单元计算需要同步临时限速指令的区域控制器列表，生成临时限速更新请求发送到对应的区域控制器，开启数据存储单元端的临时限速更新计时器，倒数计时，并等待区域控制器发送的临时限速更新回复消息。区域控制器收到有效的临时限速更新请求之后，开启区域控制器端的临时限速更新计时器，同时向数据存储单元发送临时限速更新回复消息。在数据存储单元端，若在临时限速更新计时器未超时期间，数据存储单元接收到全部需要同步临时限速指令的区域控制器发送的临时限速更新回复消息，则执行会话成功关闭操作：应用临时限速指令，将临时限速指令同步到临时限速指令永久存储区；若临时限速更新计时器已经超时，数据存储单元仍未收到全部的区域控制器回复的临时限速更新消息，则执行会话关闭失败操作：临时限速指令不被同步到临时限速指令永久存储区。若在会话计时器有效期内，数据存储单元未执行会话成功关闭操作，会 话计时器超时，则数据存储单元自动关闭会话，并将临时限速指令暂存区数据刷新为无效的初始值。在区域控制器端，若其开启的临时限速更新计时器超时，仍未收到有效的临时限速信息请求回复消息，则导向安全侧，将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始值，限制列车在轨道区段上超速运行。上述涉及到的三个计时器间的关系为：数据存储单元的会话计时器设置的计数时间大于区域控制器的临时限速更新计时器设置的计数时间，区域控制器的临时限速更新计时器设置的计数时间大于数据存储单元的临时限速更新计时器设置的计数时间；原则上，数据存储单元的临时限速更新计时器设置的计数时间应大于等于数据存储单元与区域控制器之间发送临时限速更新请求和回复临时限速更新回复消息最大总耗时的两倍，区域控制器的临时限速更新计时器设置的计数时间应大于等于区域控制器发送临时限速信息请求的周期的两倍及以上；区域控制器的临时限速更新计时器设置的计数时间大于数据存储单元的临时限速更新计时器设置的计数时间，是为了保证临时限速命令在更新期间，区域控制器端不会因为临时限速更新计时器的超时意外而将线路临时限速设置为最低配速；数据存储单元的会话计时器的计数时间设置为最大，是为了操作的顺利进行。在会话关闭阶段，数据存储单元发送临时限速更新请求后，数据存储单元进入临时限速指令更新期。期间，数据存储单元禁止向区域控制器发送临时限速信息请求回复消息，直到会话关闭才恢复响应区域控制器发送的临时限速信息请求。会话关闭后，数据存储单元回复接收到的临时限速信息请求，计算轨道区段上的临时限速信息，发送到请求的区域控制器。若会话关闭后，区域控制器端的更新计时器超时仍未收到有效的临时限速信息回复，则将临时限速设置为线路最低配速。
图3是运行期间区域控制器重启时的临时限速指令处理示意图。区域控制器处于重启阶段，与数据存储单元通信断链。区域控制器在与数据存储单元断链前，周期性的向数据存储单元发送版本信息请求，数据存储单元收到版本信息请求后，开启通信有效计时器。其中，版本信息请求在临时限速管理方面的作用是探测区域控制器和数据存储单元之间的通信是否正常，提高系统的可用性，通信有效计时器设置的计数时间为区域控制器发送临时限速信息请求的周期的两倍。若区域控制器重启阶段，通信有效计时器未超时， 列车自动监控系统向数据存储单元下发临时限速指令，临时限速指令将被更新到临时限速指令暂存区，等待关闭会话，做关闭操作处理。若区域控制器重启阶段，通信有效计时器已超时，则数据存储单元拒绝当前下发的临时限速指令，并向列车自动监控系统发送操作失败指令。
通信有效计时器未超时场景下，关闭会话操作时，区域控制器已重启完毕，但区域控制器尚未与数据存储单元恢复通信连接，则数据存储单元向区域控制器发送的临时限速更新请求将无法得到回应，数据存储单元等待临时限速更新计时器超时后，向列车自动监控系统发送会话关闭失败的功能返回码，并等待会话计时器超时，刷新掉临时限速指令暂存区的限速指令。
通信有效计时器未超时场景下，关闭会话操作时，区域控制器已重启完毕，且区域控制器已与数据存储单元恢复通信连接，则数据存储单元向区域控制器发送的临时限速更新请求将得到回应。数据存储单元先将临时限速指令暂存区的临时限速指令同步到永久存储区，最后通过临时限速请求同步到区域控制器，解除区域控制器重启后对轨道区段的低速限制。
图4是运行期间数据存储单元重启时的临时限速指令处理示意图。数据存储单元处于重启阶段，区域控制器失去与数据存储单元的通信连接(此处的失去通信连接是指区域控制器、数据存储单元由于设备下线，导致的一方向另一方发送的消息不能被处理)，区域控制器以最后一次成功收到临时限速信息回复消息为基准，开启临时限速信息有效计时器。其中，有效的临时限速信息回复报文存在一个生命周期，该生命周期应大于两个临时限速信息请求的周期，所述临时限速信息有效计时器是区域控制器为管理每一条临时限速指令的生命周期而对应设置的有效期计时器，在有效期范围内，代表限速指令有效。当临时限速信息有效计时器超时时，区域控制器尚未收到有效的临时限速请求回复消息，则现有的临时限速指令超时失效，区域控制器将其管辖的轨道区段临时限速值设置为初始限速值，即线路最低配速，以保障列车安全行驶。数据存储单元重启阶段，若配置了记忆恢复功能，则从硬件平台数据库恢复重启前有效的临时限速指令到临时限速永久存储区。数据存储单元重启完成以后，列车自动监控系统向数据存储单元下发临时限速初始化解除请求。数据存储单元成功解除初始化临时限速之后，数据存储单元开始 向区域控制器回复临时限速信息请求，区域控制器收到有效的临时限速信息回复消息之后，根据消息内容更新轨道区段上的临时限速。
本发明所述方法利用“会话管理”对列车的临时限速操作进行管理，在会话开启后，允许操作设置或者取消列车的临时限速，并将更改后的临时限速指令保存在数据存储单元的会话中；在会话关闭时，数据存储单元向临时限速指令涉及到的区域控制器发送临时限速更新请求，探测通信是否正常。当数据存储单元在指定的时间范围内收到有效探测回应，将会话中的临时限速指令统一设置为可应用状态，等待区域控制器请求可应用状态的临时限速信息。
与现有技术相比，本发明具有以下优点：
本发明利用“会话管理”对列车的临时限速操作进行管理，在会话开启后，允许操作设置或者取消列车的临时限速，并将更改后的临时限速指令保存在数据存储单元的会话中，通过禁止数据存储单元在临时限速指令更新期间回复区域控制器的临时限速信息请求，并测试数据存储单元和临时限速指令涉及的到区域控制器的通信有效性，通信有效才将会话中的临时限速指令统一设置为可应用状态，用于回复区域控制器的临时限速信息请求，保证了跨区域控制器的临时限速指令生效的一致性，避免完整的临时限速指令仅在部分区域控制器上面生效。
本发明加入了临时限速指令的时效性管理，通过在临时限速指令管理的各个阶段设置有效期定时器，定义超时处理机制，机制遵循故障导向安全原则，保证了临时限速指令设置的协调性和列车的运行安全。
需要说明的是，在本发明的实施例中，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述实施例，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
尽管本发明的内容已经通过上述优选实施例作了详细介绍，但应当认识到上述的描述不应被认为是对本发明的限制。在本领域技术人员阅读了上述内容后，对于本发明的多种修改和替代都将是显而易见的。因此，本发明的 保护范围应由所附的权利要求来限定。
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- 一种列车临时限速管理方法，其特征在于，列车自动监控系统和数据存储单元之间建立通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速指令，在通信会话关闭过程中，数据存储单元更新临时限速指令；区域控制器向数据存储单元周期性发送临时限速信息请求，在数据存储单元更新期间，数据存储单元禁止回复区域控制器的临时限速信息请求；在数据存储单元更新完毕后，数据存储单元允许回复区域控制器的临时限速信息请求。
- 如权利要求1所述的列车临时限速管理方法，其特征在于，所述数据存储单元包含临时限速指令永久存储区和临时限速指令暂存区，所述临时限速指令永久存储区用于存储所述数据存储单元成功更新临时限速指令后的临时限速指令，所述临时限速指令永久存储区内的数据同步至系统数据库，所述临时限速指令暂存区用于临时存储通信会话期间收到的临时限速指令。
- 如权利要求1所述的列车临时限速管理方法，其特征在于，所述临时限速指令至少包含：限速区段首尾轨道区段坐标、限速区段包含的轨道区段标识、以及限速速率。
- 如权利要求3所述的列车临时限速管理方法，其特征在于，所述临时限速指令的类型包含：设置临时限速和取消临时限速，所述取消临时限速的限速速率为0。
- 如权利要求2所述的列车临时限速管理方法，其特征在于，所述数据存储单元根据临时限速指令永久存储区内存储的临时限速指令生成临时限速信息回复消息，以回复区域控制器的临时限速信息请求，所述区域控制器收到临时限速信息回复消息之后，将临时限速信息回复消息中的临时限速信息应用的到相应的轨道区段上。
- 如权利要求5所述的列车临时限速管理方法，其特征在于，所述临时限速信息回复消息的生成规则为：根据临时限速指令坐标将临时限速指令区域映射到对应的轨道区段上，速度设置为限速值，对于未设置临时限速的轨 道区段，速度设置为区段设计最高时速。
- 如权利要求4或6所述的列车临时限速管理方法，其特征在于，所述数据存储单元更新临时限速指令的方法包含：所述数据存储单元计算需要同步临时限速指令的区域控制器列表，数据存储单元生成临时限速更新请求发送到对应的区域控制器，数据存储单元同时开启更新计时器；所述区域控制器收到临时限速更新请求后，向数据存储单元发送临时限速更新回复；在所述数据存储单元的更新计时器的计数时间内，数据存储单元接收到所有相关的区域控制器发送的临时限速更新回复，则数据存储单元成功更新临时限速指令，将更新后的临时限速指令存储至临时限速指令永久存储区。
- 如权利要求7所述的列车临时限速管理方法，其特征在于，在所述数据存储单元的更新计时器超时后，数据存储单元未接收到所有相关的区域控制器发送的临时限速更新回复，则通信会话关闭失败。
- 如权利要求8所述的列车临时限速管理方法，其特征在于，所述数据存储单元的更新计时器的计数时间大于等于所述数据存储单元发送临时限速更新请求和所述区域控制器发送临时限速更新回复消息的总耗时的两倍。
- 如权利要求8所述的列车临时限速管理方法，其特征在于，所述列车自动监控系统和所述数据存储单元之间成功建立通信会话后，所述数据存储单元启动会话计时器，在所述会话计时器超时后，数据存储单元执行通信会话关闭失败，则数据存储单元自动关闭通信会话，并将临时限速指令暂存区内的数据刷新为无效的初始值。
- 如权利要求10所述的列车临时限速管理方法，其特征在于，所述数据存储单元的会话计时器的计数时间应保证列车自动监控系统能够顺利执行完成正常的临时限速命令操作的最长耗时。
- 如权利要求7所述的列车临时限速管理方法，其特征在于，所述区域控制器在发送临时限速更新回复的同时，开启更新计时器，在所述区域控制器的更新计时器超时后，区域控制器未收到数据存储单元发送的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
- 如权利要求12所述的列车临时限速管理方法，其特征在于，所述区域控制器的更新计时器的计数时间大于等于所述区域控制器发送临时限速信息请求的周期的两倍；所述区域控制器的更新计时器的计数时间大于所述数据存储单元的更新计时器的计数时间。
- 如权利要求1所述的列车临时限速管理方法，其特征在于，所述数据存储单元在上电时，设置为临时限速指令初始化未解除状态，区域控制器无法从所述数据存储单元获取有效的临时限速信息。
- 如权利要求14所述的列车临时限速管理方法，其特征在于，所述数据存储单元上电后，列车自动监控系统和数据存储单元之间建立通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速初始化解除请求，解除数据存储单元的初始化状态，在通信会话关闭后，允许区域控制器从数据存储单元获取临时限速信息。
- 如权利要求15所述的列车临时限速管理方法，其特征在于，所述数据存储单元上电后，从系统数据库恢复上电前有效的临时限速指令到临时限速永久存储区。
- 如权利要求1所述的列车临时限速管理方法，其特征在于，所述区域控制器上电后，将所辖轨道区段的临时限速设置为初始化临时限速速度。
- 如权利要求7所述的列车临时限速管理方法，其特征在于，所述区域控制器周期性的向所述数据存储单元发送版本信息请求，所述数据存储单元接收到版本信息请求后，开启通信有效计时器，在所述通信有效计时器超时后，数据存储单元未接收到发送版本信息请求的区域控制器发送的临时限速更新回复，则数据存储单元拒绝当前下发的临时限速指令。
- 如权利要求18所述的列车临时限速管理方法，其特征在于，所述通信有效计时器的计数时间等于所述区域控制器发送临时限速信息请求的周期的两倍。
- 如权利要求5所述的列车临时限速管理方法，其特征在于，所述区域控制器在收到所述数据存储单元发送的临时限速信息回复消息时，同时开启临时限速信息有效计时器，在所述临时限速信息有效计时器超时后，区域控制器未收到数据存储单元发送的新的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速 度。
- 如权利要求12或17或20所述的列车临时限速管理方法，其特征在于，所述初始化临时限速速度为线路最低配速。
- 一种列车自动监控系统，其特征在于，所述列车自动监控系统建立与数据存储单元之间的通信会话，在通信会话开启后，列车自动监控系统向数据存储单元下发临时限速指令。
- 如权利要求21所述的列车自动监控系统，其特征在于，在通信会话开启后，所述列车自动监控系统向数据存储单元下发临时限速初始化解除请求，解除数据存储单元的初始化状态。
- 一种数据存储单元，其特征在于，在与列车自动监控系统的通信会话开启后，所述数据存储单元接收列车自动监控系统下发的临时限速指令，在通信会话关闭过程中，所述数据存储单元更新临时限速指令，在数据存储单元更新期间，所述数据存储单元禁止回复区域控制器发送的临时限速信息请求，在更新完成后，所述数据存储单元允许回复区域控制器发送的临时限速信息请求。
- 如权利要求24所述的数据存储单元，其特征在于，所述数据存储单元包含临时限速指令永久存储区和临时限速指令暂存区，所述临时限速指令永久存储区用于存储所述数据存储单元成功更新临时限速指令后的临时限速指令，所述临时限速指令永久存储区内的数据同步至系统数据库，所述临时限速指令暂存区用于临时存储通信会话期间收到的临时限速指令。
- 如权利要求25所述的数据存储单元，其特征在于，所述数据存储单元根据临时限速指令永久存储区内存储的临时限速指令生成临时限速信息回复消息，以回复区域控制器的临时限速信息请求。
- 如权利要求24所述的数据存储单元，其特征在于，所述数据存储单元更新临时限速指令的方法包含：所述数据存储单元计算需要同步临时限速指令的区域控制器列表，数据存储单元生成临时限速更新请求发送到对应的区域控制器，数据存储单元同时开启更新计时器；在所述数据存储单元的更新计时器的计数时间内，数据存储单元接收到所有相关的区域控制器发送的临时限速更新回复，则数据存储单元成功更新临时限速指令，将更新后的临时限速指令存储至临时限速指令 永久存储区。
- 如权利要求27所述的数据存储单元，其特征在于，在所述数据存储单元的更新计时器超时后，数据存储单元未接收到所有相关的区域控制器发送的临时限速更新回复，则通信会话关闭失败。
- 如权利要求28所述的数据存储单元，其特征在于，所述数据存储单元的更新计时器的计数时间大于等于所述数据存储单元发送临时限速更新请求和区域控制器发送临时限速更新回复消息的总耗时的两倍。
- 如权利要求29所述的数据存储单元，其特征在于，所述数据存储单元和列车自动监控系统之间成功建立通信会话后，所述数据存储单元启动会话计时器，在所述会话计时器超时后，数据存储单元执行通信会话关闭失败，则所述数据存储单元自动关闭通信会话，并将临时限速指令暂存区内的数据刷新为无效的初始值。
- 如权利要求30所述的数据存储单元，其特征在于，所述数据存储单元的会话计时器的计数时间应保证列车自动监控系统能够顺利执行完成正常的临时限速命令操作的最长耗时。
- 如权利要求24所述的数据存储单元，其特征在于，所述数据存储单元在上电时，设置为临时限速指令初始化未解除状态，区域控制器无法从所述数据存储单元获取有效的临时限速信息。
- 如权利要求32所述的数据存储单元，其特征在于，所述数据存储单元上电后，数据存储单元和列车自动监控系统之间建立通信会话，在通信会话开启后，数据存储单元接收列车自动监控系统下发的临时限速初始化解除请求，解除数据存储单元的初始化状态，在通信会话关闭后，允许区域控制器从数据存储单元获取临时限速信息。
- 如权利要求33所述的数据存储单元，其特征在于，所述数据存储单元上电后，从系统数据库恢复上电前有效的临时限速指令到临时限速永久存储区。
- 如权利要求27所述的数据存储单元，其特征在于，所述数据存储单元接收到区域控制器发送的版本信息请求后，开启通信有效计时器，在所述通信有效计时器超时后，数据存储单元未接收到发送版本信息请求的区域控制器发送的临时限速更新回复，则数据存储单元拒绝当前下发的临时限速 指令。
- 如权利要求35所述的数据存储单元，其特征在于，所述通信有效计时器的计数时间等于区域控制器发送临时限速信息请求的周期的两倍。
- 一种区域控制器，其特征在于，所述区域控制器向数据存储单元周期性发送临时限速信息请求，所述区域控制器收到临时限速信息回复消息之后，将临时限速信息回复消息中的临时限速信息应用的到相应的轨道区段上。
- 如权利要求37所述的区域控制器，其特征在于，所述区域控制器收到临时限速更新请求后，向数据存储单元发送临时限速更新回复。
- 如权利要求38所述的区域控制器，其特征在于，所述区域控制器在发送临时限速更新回复的同时，开启更新计时器，在所述区域控制器的更新计时器超时后，区域控制器未收到数据存储单元发送的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
- 如权利要求39所述的区域控制器，其特征在于，所述区域控制器的更新计时器的计数时间大于等于所述区域控制器发送临时限速信息请求的周期的两倍；所述区域控制器的更新计时器的计数时间大于所述数据存储单元的更新计时器的计数时间。
- 如权利要求37所述的区域控制器，其特征在于，所述区域控制器上电后，将所辖轨道区段的临时限速设置为初始化临时限速速度。
- 如权利要求37所述的区域控制器，其特征在于，所述区域控制器周期性的向数据存储单元发送版本信息请求。
- 如权利要求37所述的区域控制器，其特征在于，所述区域控制器在收到数据存储单元发送的临时限速信息回复消息时，同时开启临时限速信息有效计时器，在所述临时限速信息有效计时器超时后，区域控制器未收到数据存储单元发送的新的临时限速信息回复消息，则将区域控制器管辖范围内的所有轨道区段上的临时限速设置为初始化临时限速速度。
- 一种列车临时限速管理系统，其特征在于，所述列车临时限速管理系统包含如权利要求22～43中任意一项所述的列车自动监控系统、数据存储单元和区域控制器。
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| CN115366951A (zh) * | 2022-08-19 | 2022-11-22 | 交控科技股份有限公司 | 临时限速管理方法、装置、电子设备及存储介质 |
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| CN112678027B (zh) | 2022-09-30 |
| CN112678027A (zh) | 2021-04-20 |
| EP4071027A1 (en) | 2022-10-12 |
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| EP4071027A4 (en) | 2024-03-13 |
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