CN106708569A - Hot loading method and apparatus for VOBC configuration file in cross-line train - Google Patents
Hot loading method and apparatus for VOBC configuration file in cross-line train Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44505—Configuring for program initiating, e.g. using registry, configuration files
- G06F9/4451—User profiles; Roaming
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Abstract
The invention discloses a hot loading method and apparatus for a VOBC (Vehicle On Board Controller) configuration file in a cross-line train. The method comprises the steps of viewing whether a configuration file of a to-be-operated line is downloaded or not when it is determined that a current train needs to be subjected to cross-line operation in an operation process; when the configuration file is not downloaded, in each operation cycle of the VOBC of the current train, downloading the configuration file by steps from a storage unit of the train according to system resources occupied for running a VOBC program; and after the configuration file is downloaded, initializing the configuration file by steps in each operation cycle of the VOBC, thereby finishing hot loading of the configuration file, wherein a memory region occupied for running the VOBC and a memory region occupied for downloading the configuration file are independent of each other. According to the method, configuration data of all lines does not need to be stored in a system memory in which the VOBC is located, so that the expansibility of a system is higher and the VOBC can be subjected to cross-line operation in any number of lines.
Description
Technical field
The present invention relates to data processing field, and in particular to the hot loading method of VOBC configuration files in a kind of overline train
And device.
Background technology
In existing city rail traffic signal system, VOBC (Vehicle Controller) needs to prestore the electricity of working line
The configuration files such as sub- map, train can only run on the circuit of the respective profiles that have been stored with.
Under the main trend that urban track traffic is interconnected, increasing signal system can support that train cross-line is transported
OK." train can only run on the circuit of the respective profiles that have been stored with " will turn into the master that restrictive signal system interconnects
Want factor,
At present, train must download the configuration file of all circuits that may be run before putting into effect, and in system
The power-up initializing stage initializes all configuration files.
Especially, train must before operation downloading data, limit the flexibility of train cross-line；In power-up initializing rank
The whole configuration files of section initialization consume a large amount of system resources.
The content of the invention
In view of the above problems, the present invention proposes the one kind for overcoming above mentioned problem or solving the above problems at least in part
The hot loading method and device of VOBC configuration files in overline train.
For this purpose, in a first aspect, the present invention proposes a kind of hot loading method of VOBC configuration files in overline train, bag
Include：
When current train determines to need movement across lines in the process of running, check and treat the configuration file of working line whether
Completed through downloading；
When the configuration file is not downloaded, within each cycle of operation of current train VOBC, according to operation VOBC
System resource shared by program, downloads the configuration file step by step from the memory cell of train；And
After the configuration file is downloaded and completed, match somebody with somebody described in initialization step by step within each cycle of operation of the VOBC
File is put, to complete the heat loading of configuration file；
Wherein, the shared region of memory of the VOBC operations and the region of memory phase shared by the download configuration file
It is mutually independent.
Alternatively, the system resource according to shared by operation VOBC programs, downloads institute step by step from the memory cell of train
The step of stating configuration file, including：
System resource according to shared by operation VOBC programs, determines to download the configuration file in each cycle of operation
Byte number to be downloaded, download request is sent to the memory cell, and the download request includes：The line identification of configuration file and treat
The information of the byte number of download；
After receiving the response message of the download request that the memory cell is returned, institute is downloaded within each cycle of operation
The partial data of configuration file is stated, wherein, the byte number of the partial data is less than or equal to pre-download in each cycle of operation
Byte number.
Alternatively, the step of partial data of the configuration file is downloaded within each cycle of operation, including：
In each cycle of operation of the VOBC programs, to the download request of the memory cell transmitting portion data；
First school of the partial data sent in the partial data and the memory cell that receive the memory cell transmission
Test and；
Partial data download complete when, acquisition downloaded partial data second verification and,
Verify and be compared by the described first verification and with described second, it is determined that whether download part data are correct；
When in the first verification and verifying and be identical with described second, determine that the partial data of the configuration file has been downloaded
Into；
Otherwise, within next cycle of operation, again to the download request of the memory cell transmitting portion data.
Alternatively, the system resource according to shared by operation VOBC programs, determines to download institute in each cycle of operation
The byte number to be downloaded of configuration file is stated, including：
In the exclusive CPU of the download configuration file, the system resource according to shared by VOBC determines each cycle of operation
The interior byte number to be downloaded for downloading the configuration file and, download time corresponding with the byte number to be downloaded.
Alternatively, the system resource according to shared by operation VOBC programs, determines to match somebody with somebody described in download in each cycle of operation
The step of putting the byte number to be downloaded of file, including：
Memory information according to shared by operation VOBC programs, CPU calculation resources and/or interface resource, determine it is described under
Carry byte number.
Alternatively, the step of initializing the configuration file step by step within each cycle of operation of the VOBC, including：
The memory information shared by memory information, CPU calculation resources, interface resource, operation VOBC programs according to system,
CPU calculation resources and/or interface resource, obtain the execution time of the initialization configuration file in limitation each cycle of operation；
Within each cycle of operation, the configuration file is initialized according to the execution time, until the configuration file
Initialization is completed.
Alternatively, methods described also includes：
It is to point to the configuration that initialization is completed by the pointer regulation for accessing configuration file when movement across lines instruction is received
The region of memory of file.
Alternatively, there is the configuration file on two lines road in the internal memory described in synchronization where VOBC programs.
Second aspect, the present invention provides a kind of hot loading device of VOBC configuration files in overline train, including：
Unit is checked, when determining to need movement across lines in the process of running for current train, is checked and is treated working line
Whether configuration file has downloaded completion；
Substep download unit, for when the configuration file is not downloaded, in each operation week of current train VOBC
In phase, the system resource according to shared by operation VOBC programs downloads the configuration file step by step from the memory cell of train；
Substep initialization unit, after downloading completion in the configuration file, in each operation week of the VOBC
Substep initializes the configuration file in phase, to complete the heat loading of configuration file；
Wherein, the shared region of memory of the VOBC operations and the region of memory phase shared by the download configuration file
It is mutually independent.
The third aspect, the present invention provides a kind of mobile unit, including：The heat of VOBC configuration files in above-mentioned overline train
Loading device.
As shown from the above technical solution, in a kind of overline train proposed by the present invention VOBC configuration files hot loading method
And device, to be downloaded by substep, the mode of substep initialization is realized to configuration text in the case where VOBC normal functions are not influenceed
The heat loading of part, and the configuration file of heat loading is stored in independent Installed System Memory, is currently in use with VOBC programs
The stored memory of configuration file is different, so that ensure that hot loading procedure does not influence reading of the VOBC programs to current configuration file,
So that the scalability of system is stronger so that movement across lines on the circuit that VOBC can be arbitrarily more again.
Brief description of the drawings
The flow of the hot loading method of VOBC configuration files is illustrated in the overline train that Fig. 1 is provided for one embodiment of the invention
Figure；
The graph of a relation of the VOBC that Fig. 2 is provided for another embodiment of the present invention and memory cell；
The structural representation of the hot loading device of VOBC configuration files in the overline train that Fig. 3 is provided for one embodiment of the invention
Figure.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention
A part of embodiment, rather than whole embodiments.
Fig. 1 shows that the flow of the hot loading method of the overline train VOBC configuration files that one embodiment of the invention is provided is shown
It is intended to, as shown in figure 1, the method for the present embodiment comprises the following steps：
101st, when current train determines to need movement across lines in the process of running, check that the configuration file for treating working line is
It is no to have downloaded completion.
102nd, when the configuration file is not downloaded, within each cycle of operation of current train VOBC, according to operation
System resource shared by VOBC programs, downloads the configuration file step by step from the memory cell of train.
The relation of VOBC and the memory cell is as shown in Figure 2 in the present embodiment.VOBC and memory cell are respectively positioned on vehicle-mounted
In equipment, and by train-ground communication network interaction.
It should be noted that the system resource in the step refers to the system resource of operating system in mobile unit, should
Operation has VOBC programs in operating system, and needs load the configuration file of the circuit of to be switched operation in internal memory.
Further, the VOBC programs in current mobile unit have the fixed cycle of operation, such as cycles of 200ms mono-
Deng, therefore, the loading in the present embodiment needs to be completed in multiple cycles of operation, because referred to as substep download configuration file.
103rd, after the configuration file downloads completion, institute is initialized step by step within each cycle of operation of the VOBC
Configuration file is stated, to complete the heat loading of configuration file.
In the present embodiment, due to the cycle of operation of the duration more than VOBC programs of complete initial configuration file, therefore, this reality
Apply in example, realize the initialization of configuration file, and then foregoing description step by step within each cycle of operation of multiple cycles of operation
It is to initialize the configuration file step by step within each cycle of operation of the VOBC.
In the present embodiment, the internal memory shared by the shared region of memory of the VOBC operations and the download configuration file
Region is separate.
In addition, it is necessary to illustrate, the loading in the present embodiment can be regarded as hot loading, i.e., operation has VOBC in internal memory
In the case of program, the configuration file of All other routes is further loaded, and do not interfere with each other mutually.
The present embodiment is downloaded by substep, and the mode of substep initialization is realized in the case where VOBC normal functions are not influenceed
Heat loading to configuration file, and the configuration file of heat loading is stored in independent Installed System Memory in the present embodiment, with
The stored memory of the configuration file that VOBC programs are currently in use is different, so as to ensure that hot loading procedure does not influence VOBC programs to working as
The reading of preceding configuration file.Thus, without storing the configuration data of all circuits in the Installed System Memory where VOBC so that be
The scalability of system is stronger so that movement across lines on the circuit that VOBC can be arbitrarily more again.
In a kind of optional implementation, the method shown in above-mentioned Fig. 1 may also include the step not shown in following figures
Rapid 104：
104th, it is to point to what initialization was completed by the pointer regulation for accessing configuration file when movement across lines instruction is received
The region of memory of configuration file.
It will be appreciated that movement across lines instruction can be control centre or zone controller sending, the present embodiment is not right
It is defined.
It will be appreciated that step 104 explanation is configuration file handoff procedure, i.e. the currently used configuration number of VOBC programs
It is respectively stored in two pieces of different region of memorys according to the configuration data obtained with heat loading, VOBC programs are to configuration data
Access is all based on a pointer for sensing configuration data memory address, so the sensing by changing the pointer can just be changed
The currently used configuration data of VOBC softwares.After the completion of configuration data (above-mentioned configuration file) heat loading, by by currently
Configuration data pointer points to the memory field for being altered to the configuration data for treating heat loading, it is possible to realize the switching of configuration file.
Further, it is the autgmentability of raising system, generally, is deposited in the internal memory where VOBC programs described in synchronization
In the configuration file on two lines road.That is, the configuration file without storing all circuits in Installed System Memory, the present embodiment
In only store current working line configuration file and treat movement across lines next circuit configuration file, and then so that be
The scalability enhancing of system.
For example, the system resource according to shared by operation VOBC programs in above-mentioned steps 102, from the storage of train
The step of configuration file being downloaded in unit step by step, including sub-step 1021 and sub-step not shown in following figure
1022：
1021st, the system resource according to shared by operation VOBC programs, determines to download the configuration in each cycle of operation
The byte number to be downloaded of file, download request is sent to the memory cell, and the download request includes：The circuit mark of configuration file
Know the information with byte number to be downloaded.
In the present embodiment, when the download function of system does not monopolize CPU, can be according to the system shared by operation VOBC programs
Resource, determines to download the byte number to be downloaded of the configuration file in each cycle of operation；
If the exclusive CPU of the download function of system, that is, when downloading the exclusive CPU of the configuration file, according to shared by VOBC
System resource, determine to download in each cycle of operation the byte number to be downloaded of the configuration file and, with the byte to be downloaded
Number corresponding download time.
The download time need not send memory cell, only be the time segment information of cycle of operation clocking internal.
The above-mentioned system for referring to is the system of mobile unit, and system resource is the system resource of mobile unit.
Further, in the present embodiment, according to operation VOBC programs shared by memory information, CPU calculation resources and/or
Interface resource, determines the download byte number.
1022nd, after receiving the response message of the download request that the memory cell is returned, within each cycle of operation
The partial data of the configuration file is downloaded, wherein, the byte number of the partial data is less than or equal in each cycle of operation
The byte number of pre-download.
For sub-step 1022, it is illustrated below：
The first step, each cycle of operation in VOBC programs, please to the download of the memory cell transmitting portion data
Ask；
The partial data sent in second step, the partial data of the reception memory cell transmission and the memory cell
First verification and；
3rd step, partial data download complete when, acquisition downloaded partial data second verification and,
4th step, by described first verification and with described second verification and be compared, it is determined that download part data are
It is no correct；
When in the first verification and verifying and be identical with described second, determine that the partial data of the configuration file has been downloaded
Into；
Otherwise, within next cycle of operation, again to the download request of the memory cell transmitting portion data.
In addition, in another optional implementation, for example substep download configuration file in above-mentioned steps 102.
At present, VOBC programs have the fixed cycle of operation, when needing to download new configuration file, VOBC programs each
The cycle of operation performs once substep downloading process, is limited by limiting the execution time of substep downloading process or downloading byte number
Its occupancy to system resource.
Every time substep download complete when should calculate the verification of downloading data and (as above first verification and, second verification
With), whole configuration file download verification that whole configuration file is obtained when finishing and, so as to know downloaded file content just
True property.Failed download is considered as when detecting checksum error, the configuration file is re-downloaded.
Special instruction, when the download function of configuration file does not monopolize CPU (non-obstruction), only need to limit download byte number
To limit its occupancy to system resource；When download function monopolizes CPU, its execution time should be also limited.
In the present embodiment, each cycle of operation of system for assessing mobile unit can be used for the system resource of heat loading, such as
Can be taken from those information in each restrictive condition most according to information such as free memory size, CPU calculation resources, interface resources
The restrictive condition such as the small download byte number being worth for calculating substep download function and download time.
Further, for example, being initialized step by step within each cycle of operation of the VOBC in above-mentioned steps 103
The step of configuration file, it is described as follows：
The memory information shared by memory information, CPU calculation resources, interface resource, operation VOBC according to system, CPU
Calculation resources and/or interface resource, obtain the execution time of the initialization configuration file in limitation each cycle of operation；
Within each cycle of operation, the configuration file is initialized according to the execution time, until the configuration file
Initialization is completed.
That is, after by the method that substep is downloaded, whole configuration file is downloaded in internal memory, VOBC programs each
The cycle of operation performs once substep initialization procedure, and it is limited to system by limiting the execution time of substep initialization procedure
The occupancy of resource.
Especially, in the present embodiment, each cycle of operation of system for assessing mobile unit can be used for the system that heat is loaded
The resource such as information such as free memory size, CPU calculation resources, interface resource, takes in each restrictive condition most from those information
The small maximum execution time being worth for calculating substep function of initializing.
Fig. 3 shows that the structure of the hot loading device of the overline train VOBC configuration files that one embodiment of the invention is provided is shown
It is intended to, as shown in figure 3, the device of the present embodiment includes：Check unit 31, substep download unit 32, substep initialization unit 33；
Wherein, when checking that unit 31 determines to need movement across lines in the process of running for current train, check and wait to run
Whether the configuration file of circuit has downloaded completion；
Substep download unit 32 is used for when the configuration file is not downloaded, in each operation week of current train VOBC
In phase, the system resource according to shared by operation VOBC programs downloads the configuration file step by step from the memory cell of train；
Substep initialization unit 33 is used for after the configuration file downloads completion, in each operation week of the VOBC
Substep initializes the configuration file in phase, to complete the heat loading of configuration file；
Wherein, the shared region of memory of the VOBC operations and the region of memory phase shared by the download configuration file
It is mutually independent.
In a kind of optional implementation, the substep download unit 32 specifically for
System resource according to shared by operation VOBC programs, determines to download the configuration file in each cycle of operation
Byte number to be downloaded, download request is sent to the memory cell, and the download request includes：The line identification of configuration file and treat
The information of the byte number of download；
After receiving the response message of the download request that the memory cell is returned, institute is downloaded within each cycle of operation
The partial data of configuration file is stated, wherein, the byte number of the partial data is less than or equal to pre-download in each cycle of operation
Byte number.
The device of the present embodiment can perform the method described in foregoing any embodiment, refer to above-mentioned record, no longer be gone to live in the household of one's in-laws on getting married at this
State.
The device of the present embodiment is not influenceing VOBC program normal functions by way of substep is downloaded, substep is initialized
In the case of realize to configuration file heat loading.Configuration file in heat loading is stored in independent Installed System Memory, with
The stored memory of the configuration file that VOBC programs are currently in use is different, so as to ensure that hot loading procedure does not influence VOBC softwares to working as
The reading of preceding configuration file.
In the present embodiment, VOBC programs, but only need to be will without download the configuration data of a plurality of circuit before operation
It is into the data for loading the circuit during next circuit by hot loading method, and consumption of the hot loading procedure to system resource
Controllable, do not interfere with existing software/program operation.
In movement across lines, VOBC programs are no longer restricted by configuration file, be may operate in all supports and are interconnected work(
On the circuit of energy.
Preferably, to realize to the controllable of system resource, generally can be in synchronization Installed System Memory at most in the presence of two
The configuration data of circuit.Thus, VOBC programs need to only pass through hot loading method matching somebody with somebody next circuit before next circuit is entered
Put data heat to be loaded into internal memory, synchronization only has the configuration data terminate-and-stay-resident of " current line " and " next circuit ", its
The configuration data of his circuit is without terminate-and-stay-resident.
Without store the configuration data of all circuits in Installed System Memory, make the scalability of system stronger, VOBC can be with
The movement across lines on any many circuits.
The embodiment of the present invention also provides a kind of mobile unit, including：VOBC configurations in above-mentioned any described overline train
The hot loading device of file.
Although it will be appreciated by those of skill in the art that some embodiments described herein include being wrapped in other embodiments
Some features for including rather than further feature, but the combination of the feature of different embodiments mean in the scope of the present invention it
It is interior and form different embodiments.
It will be understood by those skilled in the art that each step in embodiment can be realized with hardware, or with one or
The software module run on person's multiple processor is realized, or is realized with combinations thereof.Those skilled in the art should manage
Solution, can realize according to embodiments of the present invention one using microprocessor or digital signal processor (DSP) in practice
The some or all functions of a little or whole parts.The present invention is also implemented as performing method as described herein
Some or all equipment or program of device (for example, computer program and computer program product).
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modification and modification are each fallen within by appended claims
Within limited range.
Claims (10)
1. in a kind of overline train VOBC configuration files hot loading method, it is characterised in that including：
When current train determines to need movement across lines in the process of running, check treat working line configuration file whether under
Carry and complete；
When the configuration file is not downloaded, within each cycle of operation of current train VOBC, according to operation VOBC programs
Shared system resource, downloads the configuration file step by step from the memory cell of train；And
After the configuration file downloads completion, the configuration text is initialized step by step within each cycle of operation of the VOBC
Part, to complete the heat loading of configuration file；
Wherein, the region of memory for running the region of memory shared by VOBC programs and downloading shared by the configuration file is mutually only
It is vertical.
2. method according to claim 1, it is characterised in that the system resource according to shared by operation VOBC programs, from
The step of configuration file being downloaded in the memory cell of train step by step, including：
System resource according to shared by operation VOBC programs, determines to download in each cycle of operation under the treating of the configuration file
Byte number is carried, download request is sent to the memory cell, the download request includes：The line identification of configuration file and to be downloaded
Byte number information；
After receiving the response message of the download request that the memory cell is returned, downloaded within each cycle of operation described in match somebody with somebody
The partial data of file is put, wherein, the word of the byte number less than or equal to pre-download in each cycle of operation of the partial data
Joint number.
3. method according to claim 2, it is characterised in that the portion of the configuration file is downloaded within each cycle of operation
The step of divided data, including：
In each cycle of operation of the VOBC programs, to the download request of the memory cell transmitting portion data；
Receive the partial data sent in the partial data and the memory cell that the memory cell sends the first verification and；
Partial data download complete when, acquisition downloaded partial data second verification and,
Verify and be compared by the described first verification and with described second, it is determined that whether download part data are correct；
When in the first verification and verifying and be identical with described second, determine that the partial data of the configuration file has downloaded completion；
Otherwise, within next cycle of operation, again to the download request of the memory cell transmitting portion data.
4. method according to claim 2, it is characterised in that the system money according to shared by operation VOBC programs
Source, determines to download the byte number to be downloaded of the configuration file in each cycle of operation, including：
In the exclusive CPU of the download configuration file, the system resource according to shared by VOBC, under determining in each cycle of operation
Carry the configuration file byte number to be downloaded and, download time corresponding with the byte number to be downloaded.
5. method according to claim 2, it is characterised in that the system resource according to shared by operation VOBC programs, really
The step of byte number to be downloaded of the configuration file being downloaded in fixed each cycle of operation, including：
Memory information according to shared by operation VOBC programs, CPU calculation resources and/or interface resource, determine the download word
Joint number.
6. method according to claim 1, it is characterised in that initialized step by step within each cycle of operation of the VOBC
The step of configuration file, including：
The memory information shared by memory information, CPU calculation resources, interface resource, operation VOBC programs according to system, CPU
Calculation resources and/or interface resource, obtain the execution time of the initialization configuration file in limitation each cycle of operation；
Within each cycle of operation, the configuration file is initialized according to the execution time, until the configuration file is initial
Change and complete.
7. method according to claim 6, it is characterised in that methods described also includes：
It is to point to the configuration file that initialization is completed by the pointer regulation for accessing configuration file when movement across lines instruction is received
Region of memory.
8. according to any described method of claim 1 to 7, it is characterised in that interior where VOBC programs described in synchronization
Deposit the middle configuration file that there is two lines road.
9. in a kind of overline train VOBC configuration files hot loading device, it is characterised in that including：
Unit is checked, when determining to need movement across lines in the process of running for current train, the configuration for treating working line is checked
Whether file has downloaded completion；
Substep download unit, for when the configuration file is not downloaded, within each cycle of operation of current train VOBC,
System resource according to shared by operation VOBC programs, downloads the configuration file step by step from the memory cell of train；
Substep initialization unit, after downloading completion in the configuration file, within each cycle of operation of the VOBC
Substep initializes the configuration file, to complete the heat loading of configuration file；
Wherein, the shared region of memory of VOBC operations and the region of memory downloaded shared by the configuration file are mutually only
It is vertical.
10. a kind of mobile unit, it is characterised in that including：VOBC configuration files in overline train described in the claims 9
Hot loading device.
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| CN109572753A (en) * | 2018-12-13 | 2019-04-05 | 交控科技股份有限公司 | The overline train VOBC configuration file processing method suitable for interconnecting |
| CN115096291A (en) * | 2022-07-06 | 2022-09-23 | 上海电气集团智能交通科技有限公司 | Electronic map dynamic splicing method based on magnetic nail track |
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| 李凯: ""CBTC系统中数据存储单元（DSU）的数据安全研究"", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554561A (en) * | 2017-08-31 | 2018-01-09 | 深圳英龙华通科技发展有限公司 | The method and system that vehicle-mounted business realizing interconnects when train cross-line is runed |
| CN107554561B (en) * | 2017-08-31 | 2019-05-21 | 深圳英龙华通科技发展有限公司 | The train cross-line method and system that vehicle-mounted business realizing interconnects when runing |
| CN109572753A (en) * | 2018-12-13 | 2019-04-05 | 交控科技股份有限公司 | The overline train VOBC configuration file processing method suitable for interconnecting |
| CN109572753B (en) * | 2018-12-13 | 2021-03-12 | 交控科技股份有限公司 | Cross-line train VOBC configuration file processing method suitable for interconnection and interworking |
| CN115096291A (en) * | 2022-07-06 | 2022-09-23 | 上海电气集团智能交通科技有限公司 | Electronic map dynamic splicing method based on magnetic nail track |
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| CN106708569B (en) | 2020-05-08 |
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