Main processing subsystem provided with check plate and used for general trackside safety platform
A security platform and main processing technology, applied in the direction of railway traffic management, railway signal and safety, transportation center control system, etc., can solve problems such as limited reliability, poor scalability, complex design, etc., to improve safety and security High performance and good real-time effect
Active Publication Date: 2015-07-22
CASCO SIGNAL
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Problems solved by technology
At present, no matter whether it is a foreign wayside safety platform or a localized wayside safety platform, the safety architecture adopted by the main processing subsystem MPS to ensure core safety is mostly a combination of 2 out of 2 or 3 out of 2 combined fail-safe architecture In order to realize the safety guarantee of the system, in order to realize the combined failure safety, some systems use high-performance commercial industrial control servers or industrial control computers as computing units, which have the problems of poor scalability and limited reliability.
Some systems use fully self-developed dedicated boards and certified versions of the operating system for security protection. This method has problems of high cost, high system complexity, and technical difficulty
The above two methods only use a single combined fail-safe protection technology. Due to the single safety protection technology, the design to ensure the safety of the system is relatively complicated.
Method used
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[0018] like figure 1 As shown, the input data is firstly processed by the dual-channel (channel 1 and channel 2) computing boards, and then the computing results are sent to the voting board for voting, and then the voting board outputs to the outside. At the same time, the dual-channel arithmetic board also transmits the check word calculated by itself to the voting board, and then the voting board synthesizes the check word generated by itself, and then sends it to the verification board for verification, and the verification board performs output verification. Safety cut off control.
[0019] like figure 2 Shown is the specific flow of the control operation of the present invention. Each step in the figure is described in detail as follows:
[0020] In step 201, the arithmetic board performs dual-channel arithmetic processing.
[0021] In step 202, the two-channel arithmetic boards generate their respective check words, including check words for embedded detection, che...
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The invention relates to a main processing subsystem provided with a check plate and used for a general trackside safety platform. The main processing subsystem comprises a dual-channel operation plate, a voting plate, an output interface and the check plate, wherein an input end of the check plate is connected with the voting plate and an output end thereof is connected with the output interface; data is input to the dual-channel operation plate for calculation; an operation result is sent to the voting plate for voting; the voting plate votes a result and generates a check letter at the same time; and after the check letter generated by the voting plate is sent to the check plate, the check plate judges correctness of the check letter and safely cuts off final failing check output. Compared with the prior art, according to the main processing subsystem, response failure safety and inherent failure safety are added based on a two-out-of-two combination failure safety framework, the final output is controlled by safe cutoff, the safety of the whole MPS (main processing subsystem) is improved, the complexity and difficulty of the system are reduced, and the main processing subsystem has good extensibility and generality.
Description
technical field [0001] The invention relates to a safety processing system of urban rail transit, in particular to a main processing subsystem of a universal trackside safety platform with a check board. Background technique [0002] ZC (Zone Controller) and LC (Line Controller) subsystems are the main subsystems of the transportation control system currently used in the field of urban rail transit. In order to ensure the high reliability and high safety of these two subsystems, it is necessary to develop a common wayside safety platform as the operating carrier of ZC and LC subsystems. The wayside safety platform is a safety platform system, and its core safety subsystem is the main processing subsystem MPS which undertakes the main safety processing functions. At present, no matter whether it is a foreign wayside safety platform or a localized wayside safety platform, the safety architecture adopted by the main processing subsystem MPS to ensure core safety is mostly a co...
Claims
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IPC IPC(8): B61L27/00
Inventor 董高云孙军峰周宇恒王澜王兆耀夏芸陈晓轩张彬桑俊霞
Owner CASCO SIGNAL