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A safety platform starting method based on a 2*2-out-of-two architecture

A security platform and post-start technology, which is applied in the direction of program loading/starting, program control devices, etc., can solve problems such as complex processing logic, achieve high reliability and security, prevent misjudgment, and ensure timeliness and reliability.

Active Publication Date: 2019-05-10
CASCO SIGNAL
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  • Abstract
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Problems solved by technology

This makes the processing logic of its startup process more complicated

Method used

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  • A safety platform starting method based on a 2*2-out-of-two architecture
  • A safety platform starting method based on a 2*2-out-of-two architecture

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] figure 1 It is the relationship diagram of the logic operation board composition and initialization of the trackside safety platform in the present invention and the main task. Processing boards, A series includes CPU1_A, CPU2_A; B series includes CPU1_B, CPU2_B. Each board enters the main task after completing initialization, and the main task is executed in a certain cycle to process input and output messages. The security platform can run on a ...

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Abstract

The invention relates to a safety platform starting method based on a 2*2 architecture, which comprises the following steps of: confirming a version message through multiple times of mutual message sending, multiple times of confirmation and a timeout waiting mechanism among logical operation board cards, and accurately judging the existing states of other logical operation board cards; Meanwhile,a preset clock message is added into the interaction message, it is guaranteed that all the board cards can complete initialization starting at the same time to enter a main task, and single-system starting, double-system simultaneous starting and double-system one-to-one starting can be achieved. Compared with the prior art, the method has the advantages of higher reliability, higher safety andthe like.

Description

technical field [0001] The invention relates to a method for starting a safety platform, in particular to a method for starting a safety platform based on a 2 by 2 out of 2 architecture. Background technique [0002] The trackside safety platform is a general-purpose SIL4-level safety computer system, which can be used as trackside safety equipment for subways and railways in conjunction with upper-layer applications, such as area controllers, interlocks, train control, trams, etc. The trackside safety platform involved in the present invention adopts a 2 by 2 security architecture, and has a main machine (main system) and a backup machine (backup system) to form a 2 by 2, and the main machine and the backup machine each include two logical operations The board realizes 2 out of 2, and the input and output messages must go through the 2 out of 2 comparison within the system and the consistency comparison between the main and standby machines before entering the next step of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
Inventor 郭盟张磊张立鹏郭延霞方永佳瞿玲燕
Owner CASCO SIGNAL
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