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System failure rate allocation method and device based on autonomous operation control mode

A technology of operation control and distribution method, which is applied in the field of rail transit, can solve problems such as hazard analysis, undefined operation process, hidden safety hazards in system design, etc., and achieve the effect of ensuring safety and reliability

Pending Publication Date: 2022-05-27
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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Problems solved by technology

[0007] The existing technical solutions explain the principle of system failure rate distribution, but there is no clear and specific operation process and applicable methods. There are problems such as incomplete hazard analysis, system common cause failure, and strong human subjectivity, which may lead to system design. Security risks

Method used

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  • System failure rate allocation method and device based on autonomous operation control mode
  • System failure rate allocation method and device based on autonomous operation control mode
  • System failure rate allocation method and device based on autonomous operation control mode

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Embodiment Construction

[0081] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0082] A system failure rate allocation method based on autonomous operation control mode, such as figure 1 shown, including the following steps:

[0083] determine the top event;

[0084] Build a fault tree model according to the top event, and the fault tree model includes a system fault tree model and a functional fault tree mo...

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Abstract

The invention provides a system fault rate allocation method and device based on an autonomous operation control mode, and the method comprises the steps: determining a top event, building a fault tree model according to the top event, optimizing the fault tree model, carrying out the system hazard THR allocation according to the system fault tree model, and carrying out the system function TFFR allocation based on the system hazard THR allocation and a function fault tree model. And determining each security function SIL level and a basic event based on the TFFR distribution result, guiding a security-related system design process according to the security function SIL levels, and performing evaluation verification on the TFFR distribution result according to the basic event. The method solves the problems of incomplete hazard analysis, common cause failure of the system, strong human subjectivity and the like in the prior art, defines a specific operation process and an available method, establishes a system fault tree and a function fault tree, completes THR value distribution of system hazard according to the system fault tree, and improves the system hazard assessment efficiency. And completing the TFFR value of the function module and the fault rate distribution of the independent physical component according to the function fault tree, and verifying the validity of the distribution result.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a system failure rate distribution method and device based on an autonomous operation control mode. Background technique [0002] With the rapid development of urban rail transit, fully automatic driverless systems and autonomous train operation control technologies are becoming more and more mature, and have gradually become the development trend of urban rail transit. Under the autonomous train operation control mode, higher requirements are put forward for the safety design of the signal system, and the system failure rate distribution is an important part of the signal system design, and the reasonable distribution of the failure rate becomes the key content to improve the safety and reliability of the signal system. [0003] At present, the urban rail CBTC system consists of four parts: central equipment (ATS), ground equipment (CI, ZC), trackside equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06K9/62G06Q10/06G06Q50/30
CPCG06F17/11G06Q10/0635G06F18/24323G06Q50/40
Inventor 唐昭刘栋青李莹莹王东田宏达张韦刘天琦
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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