Method and system for realizing train control safety computer based on general COTS (Commercial-Off-The-Shelf) software and hardware

A security computer and general-purpose computing technology, applied in the field of train control security computer based on general-purpose COTS software and hardware, can solve problems such as not supporting CPU multi-core processing, not meeting CPU processing capacity, unavoidable frequency and cost, etc.

Active Publication Date: 2015-04-01
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dedicated COTS security computer system is also bound to face the pressure of computer software and hardware upgrades, and its version update speed will be faster and faster, so that the passive investment of personnel and funds required for the train control system based on its implementation is inevitable and the number of times and uncontrollable costs
[0014] In addition, compared with the general COTS operating system, the dedicated COTS security operating system is much worse in CPU multi-core processing support, and even does not support CPU multi-core processing at all, which does not meet the increasingly stronger requirements of modern train control systems for CPU processing capabilities

Method used

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  • Method and system for realizing train control safety computer based on general COTS (Commercial-Off-The-Shelf) software and hardware
  • Method and system for realizing train control safety computer based on general COTS (Commercial-Off-The-Shelf) software and hardware
  • Method and system for realizing train control safety computer based on general COTS (Commercial-Off-The-Shelf) software and hardware

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Embodiment 1

[0087] The present invention proposes a method for realizing a train control safety computer based on general COTS software and hardware, which can not only give full play to the processing ability and zero activity upgrade ability of general COTS hardware and general COTS operating system software, but also meet the requirements of SIL-4 safety certification .

[0088]The train control safety computer is logically divided into general computing domain GCD (General Computational Domain), safety computer management domain SCMD (Safety Computer Management Domain) and safety input and output domain SIOD (Safety Input and Output Domain), such as figure 1 shown.

[0089] Data is exchanged between the general computing domain GCD and the secure computer management domain SCMD through a redundant COTS communication network (preferably Ethernet), and between the safe input and output domain SIOD and the secure computer management domain SCMD through an independently designed redundant...

Embodiment 2

[0161] This embodiment provides a system based on general COTS software and hardware to realize train control safety computer, and its specific implementation structure is as follows Figure 8 As shown, specifically, the following modules may be included: a secure computer management domain SCMD 81, a general computing domain GCD 82, and a secure input / output domain SIOD 83, wherein,

[0162] Security computer management domain SCMD 81: it is used to vote on the input data transmitted by the security input and output domain SIOD based on the periodic control method, and select valid input data to use;

[0163] Security computer management domain SCMD 81: it is also used to vote on the logical operation results of the general computing domain GCD based on the periodic control method, and select effective logical operation results for use;

[0164] Security computer management domain SCMD 81: it is also used to control the general computing domain GCD to complete complex output ...

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Abstract

The embodiment of the invention provides a method and a system for realizing a train control safety computer based on general COTS (Commercial-Off-The-Shelf) software and hardware. The method comprises the steps that a safety computer management domain votes on input data transmitted by a safety input and output domain based on a periodic control way to select effective input data for use; the safety computer management domain votes on the logic operation result of a general computational domain based on the periodic control way to select an effective logic operation result for use; the safety computer management domain controls the general computational domain based on the periodic control way to complete complicated output pretreatment; the safety computer management domain completes simple output pretreatment based on the periodic control way; the safety computer management domain votes on the output pretratment result to select an effective output pretreatment result for use. According to the method and the system provided by the embodiment of the invention, not only can the processing capacity and the flexible upgrading ability of the COTS hardware and the general COTS operating system software be fully realized, but also the requirements of SIL-4 (Safety Integrity Level - 4) safety certification can be met.

Description

technical field [0001] The invention relates to the technical field of computer security, in particular to a method and system for realizing a train control security computer based on general COTS software and hardware. Background technique [0002] In recent years, new rail transit train operation control (hereinafter referred to as train control) systems, such as the Chinese Train Control System (CTCS) applied to railways and the communication-based train operation applied to urban rail transit (urban rail) Control system (Communication Based Train Control System, CBTC), widely used. As its basis, the train control safety computer carries the train control application, which provides a solid technical guarantee for the high-speed railway and the high-density and low-interval urban rail. [0003] The traditional train control safety computer inherits the development idea of ​​the original railway signal equipment, and the system R&D personnel independently design special h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/76
CPCG06F21/76
Inventor 马连川唐涛李开成王海峰
Owner BEIJING JIAOTONG UNIV
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