CN117349106A - Software inspection method and device for security of interface data of train control center - Google Patents
Software inspection method and device for security of interface data of train control center Download PDFInfo
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- CN117349106A CN117349106A CN202311314300.2A CN202311314300A CN117349106A CN 117349106 A CN117349106 A CN 117349106A CN 202311314300 A CN202311314300 A CN 202311314300A CN 117349106 A CN117349106 A CN 117349106A
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- 238000004891 communication Methods 0.000 claims abstract description 42
- 238000007689 inspection Methods 0.000 claims description 26
- 238000012423 maintenance Methods 0.000 claims description 13
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- 238000012545 processing Methods 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 7
- 238000013024 troubleshooting Methods 0.000 claims description 3
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
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Abstract
The invention provides a software checking method and a device for interface data security of a train control center, which are applied to the train control center, wherein the method comprises the following steps: acquiring interface data input by target external interface equipment; performing system logic operation on the interface data to obtain a logic operation result; based on a preset checking rule corresponding to the target external interface device, independently checking the interface data according to the logic operation result; and if the check is passed, outputting the logic operation result as an output result. The invention checks the safety of the application data of the external interface device of the train control center, avoids the safety risk caused by the system operation error due to the interface application data problem after the communication protocol layer check is passed, and further improves the safety and reliability of the system by the safety check of the interface application data.
Description
Technical Field
The invention relates to the technical field of train control systems, in particular to a software checking method and device for interface data security of a train control center.
Background
Along with the continuous development of social economy in China, the demand for railway transportation is also continuously increased. The CTCS-2 level train control system is a train control system which is widely applied in China at present. The train control center equipment is used as an important component of a CTCS-2 level train control system and is also a core of ground safety equipment, and plays a vital role in the stability and safety of train operation.
The train control center device is used as one of the most complex external interfaces in CTCS-2 grade trackside devices, and the effectiveness and the safety of external interface data are particularly important. The existing protocols have security protocols for interfaces among devices, have means such as time stamps, security check parameters, CRC protection and the like to ensure the real-time performance and the effectiveness of data, but cannot guarantee the application function effectiveness and the security of external interface data through the security protocols of the interfaces.
Disclosure of Invention
The invention aims to provide a software checking method and a device for checking the security of interface data of a train control center, which are used for checking the security of application data of an external interface, avoiding the security risk caused by system operation errors due to interface application data problems after the communication protocol layer checking is passed, and further improving the security and reliability of a system through the security checking of the application data of the interface.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
a software inspection method for interface data security of a train control center is applied to the train control center and comprises the following steps:
acquiring interface data input by target external interface equipment;
performing system logic operation on the interface data to obtain a logic operation result;
based on a preset checking rule corresponding to the target external interface device, independently checking the interface data according to the logic operation result;
and if the check is passed, outputting the logic operation result as an output result.
Optionally, if the check is not passed, interrupting the communication connection with the target external interface device and performing a communication reconnection while leading to a security side process.
Optionally, the target external interface device comprises an interlocking device, a temporary speed limiting server device, a neighboring station train control center device and a track circuit device.
Optionally, when the target external interface device is an interlocking device, performing a logic operation on the interface data includes: performing low-frequency coding operation and transponder message operation;
the inspection rule is as follows:
for the low-frequency codes of the sections, including the low-frequency codes of the sections in the station and the sections close to the sections, when the low-frequency code of a certain section is a driving permission code, checking whether the route information corresponding to the section in the interface data input by the interlocking equipment is an effective route, including whether the route number, the signal open state and the route locking state meet the requirement of sending the driving permission code, and if so, checking passing;
for the active transponder message, when a certain active transponder message is a driving permission message, checking whether the corresponding route information of the transponder in the interface data input by the interlocking equipment is an effective route or not, wherein the route information comprises a route number, a signal open state and a route locking state or not, and if so, checking to pass.
Optionally, when the target external interface device is a temporary speed limiting server device, performing a logic operation on the interface data includes: performing temporary speed limiting packet operation in the active transponder message;
the inspection rule is as follows:
and (3) carrying out inverse solution on the temporary speed limit jurisdiction, the temporary speed limit length, the temporary speed limit starting point position and the temporary speed limit value in the temporary speed limit packet in the active transponder message, and after inverse solution, carrying out one-by-one comparison check on the temporary speed limit jurisdiction, the temporary speed limit jurisdiction and the temporary speed limit starting point kilometer sign with temporary speed limit information in the transponder jurisdiction issued by the temporary speed limit server equipment, wherein the check items comprise the temporary speed limit length, the temporary speed limit value and the temporary speed limit starting point kilometer sign, and if the temporary speed limit jurisdiction and the temporary speed limit starting point speed kilometer sign are consistent, checking and passing.
Optionally, when the target external interface device is a neighboring station train control center device, performing a logic operation on the interface data includes: performing low-frequency coding operation of the boundary blocking partition;
the inspection rule is as follows:
checking whether the code sequence tracking relation between the low frequency code of the boundary block partition of the own station and the low frequency code of the boundary block partition of the front adjacent station is correct, and if so, checking to pass.
Optionally, when the target external interface device is a track circuit device, performing a logic operation on the interface data includes: performing section low-frequency coding operation;
the inspection rule is as follows:
when a driving permission code is transmitted to a certain section, whether the section state of a track circuit corresponding to the front section of the section is an idle state or not is detected, and if so, the passing is checked.
Optionally, after the obtaining the interface data input by the target external interface device, the method further includes: storing the received interface data to an interface input storage area;
the system logic operation is performed on the interface data, and after a logic operation result is obtained, the method further comprises the steps of: and saving the obtained logic operation result to the memory area to be checked.
Optionally, if the check does not pass, the method further comprises:
and displaying the fault interface equipment and the troubleshooting advice on the maintenance terminal.
A software inspection device for security of interface data of a train control center, which is applied to the train control center, and comprises:
the system interface input unit is used for acquiring interface data input by the target external interface device;
the system logic operation unit is used for carrying out system logic operation on the interface data to obtain a logic operation result;
the interface independent checking unit is used for independently checking the interface data according to the logic operation result based on a preset checking rule corresponding to the target external interface device;
and the system data output unit is used for outputting the logic operation result as an output result when the inspection passes.
Optionally, the interface independent checking unit uses an independent CPU to perform operation, or uses an independent software module to perform operation.
An electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for performing the method steps of any of the above when executing a program stored on a memory.
A computer readable storage medium having stored therein a computer program which when executed by a processor implements the method steps of any of the above.
Compared with the prior art, the invention has the following advantages:
1. the safety check unit is independent of the existing logic operation unit, can determine whether to call a safety check function through configuration, and is flexible and controllable in combination with specific application scenes;
2. checking the safety of application data, and checking the validity of external interface data without depending on a communication interface protocol, so that the validity of the interface data can be further verified by combining with self logic operation, and the safety of a system is improved;
3. and for interface data which does not pass the inspection, the maintenance terminal gives an alarm, so that the reason that the interface data of the specific external equipment does not pass the inspection can be positioned, and maintenance personnel can conveniently position the fault equipment and perform the inspection.
Drawings
For a clearer description of the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are one embodiment of the present invention, and that, without inventive effort, other drawings can be obtained by those skilled in the art from these drawings:
FIG. 1 is a flow chart of a software inspection method for security of interface data of a train control center provided by the invention;
fig. 2 is an overall flow chart of an embodiment of the present invention.
FIG. 3 is a block diagram of a software inspection device for security of interface data of a train control center according to the present invention;
fig. 4 is a block diagram of an electronic device provided by the present invention.
Detailed Description
The following provides a further detailed description of the proposed solution of the invention with reference to the accompanying drawings and detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention.
The external interface equipment of the train control center equipment comprises equipment such as computer interlocking, a temporary speed limiting server, a neighboring station train control center, a track circuit, a dispatching center, monitoring and the like. The present aspect is directed to security data for external interface devices in combination with a column control center operation logic to perform security checks independent of the logic operations themselves. If the check is inconsistent with the expected result, the communication with the external device is actively disconnected and the communication reconnection is performed, and the system is guided to the security side for processing.
The following describes in detail a software inspection method for security of interface data of a train control center according to the present invention with reference to fig. 1 and fig. 2. The invention provides a software checking method for interface data security of a train control center, which is applied to the train control center and comprises the following steps:
s101, acquiring interface data input by target external interface equipment;
specifically, the train control center system is powered on and is normally connected with the external interface equipment in a communication way. The communication connection state with the external interface device can be observed through the maintenance terminal, and the system enters the checking mode after the system operates stably. The maintenance terminal is a maintenance subsystem of the train control center, is based on the train control center maintenance terminal display temporary technical specification issued by the iron, has complete functions and simple operation, provides an friendly visual human-computer interface, records interactive data of the train control center and external equipment, helps maintenance personnel monitor the running state of the system in real time, can give an alarm in time when abnormal conditions occur in the running process, and helps the maintenance personnel analyze and solve the problems in the modes of historical playback, historical data inquiry and the like.
The target external interface equipment comprises safety equipment such as an interlocking device, a temporary speed limiting server, a neighboring station train control center, a track circuit and the like.
Optionally, the received interface data is saved to the interface input storage area.
S102, performing system logic operation on the interface data to obtain a logic operation result;
that is, according to the existing system architecture of the train control center, the acquired data of the external interface device is subjected to system logic operation, and a logic operation result is obtained. In the prior art, data obtained by performing a system logic operation is directly output as a system output result. In the present invention, however, this data requires a subsequent security check with the interface data and can be output if the check passes.
Optionally, the obtained logic operation result is stored in the memory area to be checked, and the security check is prepared.
S103, based on a preset checking rule corresponding to the target external interface device, independently checking the interface data according to the logic operation result;
and S104, if the check is passed, outputting the logic operation result as an output result.
Further, if the check is not passed, the communication connection with the target external interface device is interrupted and the communication reconnection is performed, while the system is directed to the security side processing.
(1) The interface data input by the interlocking equipment is checked, namely, the route data information of the interface data sent by the interlocking equipment is checked, and the low-frequency coding and the transponder message of the train control center are influenced by the interlocked route data information. If the train control center sends a train control permission code or a train control permission message, effective route information is received from an interface of the interlocking equipment, and a section where the train control permission code is located and a train control permission code transponder message are related to the effective route information of the interlocking interface, and checking is passed. If the effective route data information of the interlocking interface is not detected when the train control center sends the train control permission code or the train control permission message, the train control center checks that the train control center does not pass, actively disconnects the communication with the interlocking equipment, and the system guides the safety side to output and changes the train control permission code or the train control permission message into a forbidden code or a forbidden message. The low-frequency code is used for driving, after the train receives the low-frequency code, the train determines how to drive according to the low-frequency code, the low-frequency code is transmitted from the train control center to the outside, and the low-frequency code is obtained by the train control center through calculating a low-frequency code value according to input data of the interlocking equipment.
Specifically, the inspection of interface data input by the interlocking device involves two application scenarios of low-frequency coding of the section and active transponder message. And checking the low-frequency codes of the sections, including the sections in the station and the low-frequency codes close to the sections, when the low-frequency code of a certain section is a driving permission code, checking whether the route information corresponding to the section in the interface data input by the interlocking equipment is a valid route, including whether the route number, the signal open state and the route locking state meet the requirement of sending the driving permission code, if not, setting the low-frequency code of the section as a non-permission code, and actively disconnecting the communication with the interlocking equipment. For the active transponder message, when a certain active transponder message is a driving permission message, checking whether the corresponding route information of the transponder in the input data of the interlocking equipment is an effective route, including whether the route number, the signal open state and the route locking state meet the requirement of sending the driving permission message, if not, the system sets the transponder as a driving prohibition message, and actively disconnects the communication with the interlocking equipment.
(2) Checking interface data input by the temporary speed limiting server equipment, wherein the temporary speed limiting influences temporary speed limiting packages in transponder messages of a train control center, the train control center checks whether the jurisdiction range, speed value and speed limiting quantity of the temporary speed limiting packages in the transponder messages are consistent with speed limiting information issued by the temporary speed limiting server, if not, the speed limiting messages are considered to be wrong in processing, communication with the temporary speed limiting server equipment is actively disconnected, the system does not initialize processing according to the temporary speed limiting, and the transponder messages are sent according to default messages.
Specifically, input data of a temporary speed limit server relates to temporary speed limit packet operation in an active transponder packet, a temporary speed limit jurisdiction range, a temporary speed limit length, a temporary speed limit starting point position and a temporary speed limit value in the temporary speed limit packet in the active transponder packet are reversely solved, and after the reverse solution, the temporary speed limit jurisdiction range, the temporary speed limit starting point position and the temporary speed limit value are compared with temporary speed limit information in the transponder jurisdiction range issued by temporary speed limit server equipment one by one to check, wherein check items comprise the temporary speed limit length, the temporary speed limit value and a temporary speed limit starting point kilometer sign. If the comparison is inconsistent, the transponder is set as a traffic prohibition message, and the communication with the temporary speed limiting server is actively disconnected.
(3) And checking interface data input by the adjacent station train control center equipment, wherein the codes of the adjacent station train control center boundary directly influence the code tracking of the local station boundary block partition, and if the low-frequency code tracking relation between the low-frequency code of the local station boundary block partition and the low-frequency code tracking relation of the adjacent station boundary is incorrect, actively disconnecting the communication with the adjacent station train control center equipment, and processing the low-frequency code of the local station boundary block partition according to the detection code. The low-frequency code is obtained by the calculation of the low-frequency code value by the train control center according to the input data of the adjacent station train control center equipment.
Specifically, for interface data input by a neighboring station train control center, the low-frequency coding operation of a boundary block partition is related, the boundary block partition low-frequency coding of the neighboring station should track the boundary block partition low-frequency coding of the neighboring station in front, if the checking code sequence tracking is inconsistent, the boundary block partition low-frequency coding of the neighboring station is set as a non-permission code, and the communication with the neighboring station train control center is actively disconnected.
(4) And checking interface data input by the track circuit equipment, receiving occupied/idle states of each track circuit by the train control center through a track circuit interface, and if the train control center sends a running permission code to a certain section and detects that the section state of the track circuit corresponding to the section in front of the section is idle, checking to pass. If the driving permission code is sent to the section in the train control and the section state of the track circuit corresponding to the front section of the section is detected to be occupied, the train control center checks that the train control center does not pass, actively disconnects the communication with the track circuit equipment, and the system guides the safety side to output.
Specifically, for interface data input by a track circuit, the interface data relates to section low-frequency coding operation, when a train control center issues a vehicle permission code to a certain section, the train control center performs consistency check on the occupied/idle state of the track circuit of the front section, if the check contrast is inconsistent, the section low-frequency code is set as a non-permission code, and the communication with the track circuit is actively disconnected. The low-frequency code is obtained by the calculation of the low-frequency code value by the train control center according to the input data of the track circuit.
For the above inspection of the security device interface data, if the inspection is not passed, an alarm failure interface device and an investigation suggestion may also be displayed on the maintenance terminal.
If the checking fails in step S103, the train control center disconnects the communication with the external interface device, reconnects the communication with the external interface device, and repeatedly executes step S103 after the connection is normal.
Based on the same inventive concept, the invention also provides a software inspection device for the security of the interface data of the train control center, which is applied to the train control center, as shown in fig. 3, and comprises:
a system interface input unit 201, configured to obtain interface data input by a target external interface device;
a system logic operation unit 202, configured to perform a system logic operation on the interface data to obtain a logic operation result;
an interface independent checking unit 203, configured to independently check the interface data according to the logical operation result based on a preset checking rule corresponding to the target external interface device;
and a system data output unit 204, configured to output the logical operation result as an output result when the inspection passes.
The invention adds the independent interface checking unit 203 in the existing system architecture of the train control center, and the independent interface checking unit 203 can be designed to operate as an independent CPU or an independent software module.
In the present invention, the interface checking processing unit 203 and the existing system logic operation unit 202 are mutually independent, the operation result of the existing system logic operation unit 202 is not affected, the final checking result can affect the output result of the system, and according to whether the checking is passed, whether the communication connection with the external interface device is disconnected or not is determined, and the processing is conducted to the safety side, and the non-driving permission code or the non-driving permission message is sent to the train.
After the processing of the interface independent inspection unit is completed, the output result calculated by using the system logic operation unit or the output result of the interface independent inspection unit of the system is determined according to the inspection result. That is, after the inspection is passed, the output is performed according to the normal output data, the inspection is not passed, the communication with the external interface device is actively disconnected, and meanwhile, the clear alarm fault interface and the troubleshooting suggestion are performed on the maintenance terminal.
In the present invention, the interface independent checking unit 203 checks the interface data of the secure device, and the non-secure device interfaces including the device interfaces of the monitoring system, the dispatch centralized system, etc. may not consider the checking. For different external interface devices, if the check fails, the reason for the failure of the specific check should be alerted on the maintenance terminal in addition to disconnecting the communication connection to the security side output.
For the specific content of the software inspection device for the security of the data of the train control center interface, reference may be made to the above method for inspecting the security of the data of the train control center interface, which is not described herein.
Based on the same inventive concept, the invention also provides an electronic device, as shown in fig. 4, comprising a processor 301, a communication interface 302, a memory 303 and a communication bus 304, wherein the processor 301, the communication interface 302 and the memory 303 complete communication with each other through the communication bus 304;
a memory 303 for storing a computer program;
the processor 301 is configured to implement the steps of the software checking method for security of the interface data of the central control unit in the above embodiment when executing the program stored in the memory 303.
In yet another embodiment of the present invention, there is further provided a computer readable storage medium having a computer program stored therein, which when executed by a processor, implements the steps of the software inspection method for security of data of a central control interface in the above embodiment.
In yet another embodiment of the present invention, there is also provided a computer program product containing instructions that, when run on a computer, cause the computer to perform the steps of the software checking method for security of data of a column control center interface in the above embodiment.
In summary, the present invention provides a software inspection method and apparatus for security of interface data of a train control center, for interface data input by an external interface device, and perform independent security verification in combination with logic processing of the train control center, when the train control center performs independent logic inspection on received interface data to find that data conflicts are inconsistent, the system determines that the interface input has a security logic problem, and actively disconnects communication with the external device and reconnects communication, and meanwhile, the system directs to a security side for processing.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (13)
1. The software checking method for the security of the interface data of the train control center is characterized by being applied to the train control center and comprising the following steps of:
acquiring interface data input by target external interface equipment;
performing system logic operation on the interface data to obtain a logic operation result;
based on a preset checking rule corresponding to the target external interface device, independently checking the interface data according to the logic operation result;
and if the check is passed, outputting the logic operation result as an output result.
2. The software inspection method for security of train control center interface data according to claim 1, wherein if the inspection is not passed, the communication connection with the target external interface device is interrupted and the communication reconnection is performed while leading to the security side processing.
3. The software inspection method for security of train control center interface data according to claim 1, wherein the target external interface device comprises an interlocking device, a temporary speed limit server device, a neighboring train control center device, and a track circuit device.
4. The software inspection method for security of interface data of a train control center according to claim 3, wherein when the target external interface device is an interlocking device, performing a logic operation on the interface data comprises: performing low-frequency coding operation and transponder message operation;
the inspection rule is as follows:
for the low-frequency codes of the sections, including the low-frequency codes of the sections in the station and the sections close to the sections, when the low-frequency code of a certain section is a driving permission code, checking whether the route information corresponding to the section in the interface data input by the interlocking equipment is an effective route, including whether the route number, the signal open state and the route locking state meet the requirement of sending the driving permission code, and if so, checking passing;
for the active transponder message, when a certain active transponder message is a driving permission message, checking whether the corresponding route information of the transponder in the interface data input by the interlocking equipment is an effective route or not, wherein the route information comprises a route number, a signal open state and a route locking state or not, and if so, checking to pass.
5. The software inspection method for security of interface data of a train control center according to claim 3, wherein when the target external interface device is a temporary speed limit server device, performing a logic operation on the interface data comprises: performing temporary speed limiting packet operation in the active transponder message;
the inspection rule is as follows:
and (3) carrying out inverse solution on the temporary speed limit jurisdiction, the temporary speed limit length, the temporary speed limit starting point position and the temporary speed limit value in the temporary speed limit packet in the active transponder message, and after inverse solution, carrying out one-by-one comparison check on the temporary speed limit jurisdiction, the temporary speed limit jurisdiction and the temporary speed limit starting point kilometer sign with temporary speed limit information in the transponder jurisdiction issued by the temporary speed limit server equipment, wherein the check items comprise the temporary speed limit length, the temporary speed limit value and the temporary speed limit starting point kilometer sign, and if the temporary speed limit jurisdiction and the temporary speed limit starting point speed kilometer sign are consistent, checking and passing.
6. The software inspection method for security of interface data of a train control center according to claim 3, wherein when the target external interface device is a neighboring train control center device, performing a logic operation on the interface data comprises: performing low-frequency coding operation of the boundary blocking partition;
the inspection rule is as follows:
checking whether the code sequence tracking relation between the low frequency code of the boundary block partition of the own station and the low frequency code of the boundary block partition of the front adjacent station is correct, and if so, checking to pass.
7. The software inspection method for security of interface data of a train control center according to claim 3, wherein when the target external interface device is a track circuit device, performing a logic operation on the interface data comprises: performing section low-frequency coding operation;
the inspection rule is as follows:
when a driving permission code is transmitted to a certain section, whether the section state of a track circuit corresponding to the front section of the section is an idle state or not is detected, and if so, the passing is checked.
8. The software inspection method for security of interface data of a train control center according to claim 1, wherein after the obtaining the interface data input by the target external interface device, further comprises: storing the received interface data to an interface input storage area;
the system logic operation is performed on the interface data, and after a logic operation result is obtained, the method further comprises the steps of: and saving the obtained logic operation result to the memory area to be checked.
9. The software inspection method for security of column control center interface data of claim 1, wherein if the inspection is not passed, the method further comprises:
and displaying the fault interface equipment and the troubleshooting advice on the maintenance terminal.
10. A software inspection device for security of interface data of a train control center, which is applied to the train control center, comprising:
the system interface input unit is used for acquiring interface data input by the target external interface device;
the system logic operation unit is used for carrying out system logic operation on the interface data to obtain a logic operation result;
the interface independent checking unit is used for independently checking the interface data according to the logic operation result based on a preset checking rule corresponding to the target external interface device;
and the system data output unit is used for outputting the logic operation result as an output result when the inspection passes.
11. The software inspection device for security of interface data of train control center according to claim 10, wherein the interface independent inspection unit operates with an independent CPU or operates with an independent software module.
12. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any one of claims 1-9 when executing a program stored on a memory.
13. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements the method steps of any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311314300.2A CN117349106A (en) | 2023-10-10 | 2023-10-10 | Software inspection method and device for security of interface data of train control center |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311314300.2A CN117349106A (en) | 2023-10-10 | 2023-10-10 | Software inspection method and device for security of interface data of train control center |
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| CN117349106A true CN117349106A (en) | 2024-01-05 |
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| CN202311314300.2A Pending CN117349106A (en) | 2023-10-10 | 2023-10-10 | Software inspection method and device for security of interface data of train control center |
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