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Safe computer message buffer implementation method

A technology of a secure computer and an implementation method, which is applied in the field of secure computer message buffer implementation, can solve problems such as the inability to meet the high security and high configurability of the ATC system, and achieve increased configurability, flexible configuration, and satisfaction of security authentication. desired effect

Active Publication Date: 2012-08-29
NANJING NRIET IND CORP
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AI Technical Summary

Problems solved by technology

The traditional buffering method can no longer meet the requirements of high security and high configurability in the ATC system

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with embodiment.

[0017] A method for implementing secure computer message buffering. Firstly, a unified secure computer message structure is created, including serial number, message length, message content, error detection code and the like. Then create a static security message array and a serial number mapping array, where the purpose of using static message data is to meet the needs of high-security systems and reduce the probability of running errors; the serial number mapping array stores all The serial number of the message and the position of the message with the corresponding serial number in the secure message array. When sorting according to the sequence number, if the position of the message structure in the memory in the security message array is moved, the operating efficiency of the system and the utilization rate of the CPU will be reduced. Therefore, when sorting and moving the posi...

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Abstract

The invention relates to a safe computer message buffer implementation method which is characterized by comprising the following steps of: on the basis of a buffer queue, configuring the redundancy characteristics of the buffer queue, increasing head and tail fields or maintaining original fields and adding a sequencing function; implementing configurable safe computer message buffers through thesame structure; maintaining a channel and buffer configuration management table in each processor unit of a safe computer multi-redundancy system; when a safe computer multicomputer system starts, reading the configuration management tables; and forming buffers of different kinds and different quantities in a single safe computer according to the demands of application through the adaption of theconfigurable safe computer message buffers. In the invention, based on a traditional buffer queue structure, the configurability of the traditional buffer queue is increased through the mode of increasing structure fields and serial number mapping arrays, which not only can provide a first-in first-out circular buffer function, but also can provide the function of a queue meeting the requirementson retransmission and sequencing. The invention uses a purely steady state internal memory use mode with flexible configuration, and various periodicity or eventuality communication modes can be matched.

Description

technical field [0001] The invention relates to a method for safe operation of rail transit equipment, in particular to a method for processing messages during the operation of rail transit equipment, in particular to a method for realizing safe computer message buffering. Background technique [0002] As we all know, in the urban rail transit system, the automatic train control system (ATC) is the main guarantee for the safe and efficient operation of urban rail transit vehicles. The ATC system usually consists of three systems: ATP system (automatic train protection), ATO system (automatic train driving), ATS system (automatic train supervision), and CBI system (computer interlocking system). system and wayside ATP system. Since the ATP system and the interlocking system involve major personal safety and property safety, it is necessary to use a safety computer with multi-redundancy technology. [0003] There are message exchange types between different safety computer d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/863
Inventor 朱骞束元蔡李峰
Owner NANJING NRIET IND CORP
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