Method for improving dynamic coding packet security of train control system

A technology of dynamic coding and train control system, applied in transmission systems, control drives, digital transmission systems, etc., can solve problems such as lack of security guarantees, and achieve the effects of saving storage space, high processing efficiency, and improving security.

Inactive Publication Date: 2009-05-13
BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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Problems solved by technology

[0014] The purpose of the present invention is to provide a method for improving the security of dynamically coded messages in a train control system, using statically stored messages to detect the correctness of dynamically coded messages, and solving the problem of transponder messages in current train control systems based on dynamic coding technology. Addressing the lack of assurance of technical security

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  • Method for improving dynamic coding packet security of train control system
  • Method for improving dynamic coding packet security of train control system
  • Method for improving dynamic coding packet security of train control system

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Embodiment Construction

[0039] Considering the encoding process of the train control center, the message design principles and encoding principles are based on the design documents of the Ministry of Railways, which have been described in detail in the patent (Patent No. 200710176440.2) of "Dynamic Message Encoding Method for Train Control System", here Directly quote some of the results.

[0040] In order to strengthen the security of the dynamically coded message, from the perspective of the main control software of the train control center, an inspection link is added in the message encoding process, that is, the message generated by the dynamic code is inspected. The inspection standard is the statically stored message.

[0041] The configuration data of the train control center includes the following contents:

[0042] 1) Basic data: route table of the station, transponder position table, slope table, speed table, track section table.

[0043] 2) Static message data: the static message corresp...

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Abstract

The invention discloses a method for improving the security of a dynamic coding message of a train control system in the technical field of railway signal. The technical proposal of the method comprises the following steps: after a train control central system normally works, access way information, temporary speed restriction information and other data are received; if the received data is new, a 830 bit user message is generated; the 830 bit user message which is dynamically generated is compared with a message which is statically stored according to bit; if comparison results keep consistent, the dynamically generated 830 bit user message is coded according to a message coding algorithm and outputted to a side tracking electronic unit to take down the coded message to a history record list; if comparison results are not consistent for three times consecutively, the message is returned to a backup machine for further comparison; if comparison results on the backup machine are not consistent for three times consecutively, only a default message of the train control center is transmitted. The invention uses the static message to detect key parameters of the dynamic coding message so as to improve the message processing security of a responder based on dynamic coding technology.

Description

technical field [0001] The invention belongs to the technical field of railway signals, and in particular relates to a method for improving the security of a train control system dynamic encoding message. Background technique [0002] my country's railway CTCS-2 (China Train Control System, China Train Control System) level train control system uses point-connected mode to control train operation. Point-to-point transponder, connected to continuous track circuit. The transponder technology is a technology imported from Europe in my country. The function of the transponder is to provide key vehicle control information to the on-board equipment of the train, such as incoming line speed, line slope, track section, temporary speed limit and other information packets. These information packets pass through Combined and encoded, it is called a transponder message. [0003] Transponder messages are messages related to driving safety, and the correctness of message calculation is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L12/26H04L12/56H04L29/08B60L15/40
Inventor 杨勇段成明
Owner BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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