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Method and system for constructing fault tree based on mind map

A technology of mind mapping and construction methods, which is applied in general control systems, control/regulation systems, test/monitoring control systems, etc., and can solve problems such as inconsistent functional design, poor reusability, and heavy workload of fault tree construction and confirmation.

Active Publication Date: 2021-04-23
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple security engineers work together, it is easy to have inconsistent naming conventions for intermediate events, and it is also easy to cause inconsistencies between fault tree analysis and system function design. The workload of fault tree construction and confirmation is very large, and the reusability is poor.

Method used

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  • Method and system for constructing fault tree based on mind map
  • Method and system for constructing fault tree based on mind map
  • Method and system for constructing fault tree based on mind map

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0034] see figure 1 As shown, a method for constructing a fault tree based on a mind map shown in this embodiment includes the following steps:

[0035] Step 1. Analyze the functional information flow diagram of the system architecture, determine the equipment through which the functional information flows from the source to the end point, and draw a mind map of the functional information flow based on this; where a node in the mind map corresponds to the functional information A device that flows through.

[0036] As an example, the functional information flow diagram is as follows figure 2 As shown, information source 1 (RM1) and information source 2 (RM2) perceive external information, which can be understood as information collection devices such as sensors, and information synthesis equipment (PM) comprehensively processes the data of information source 1 and information source 2, and then Hand over the processing results to the information display unit (DU) for displa...

Embodiment 2

[0048] This embodiment provides a mind map-based fault tree construction system that implements the mind map-based fault tree construction method described in Embodiment 1, including a mind map construction module, a security configuration module, Fault tree building block and fault tree output block.

[0049] The mind map building block is used to analyze the imported functional information flow diagram, determine the equipment through which the functional information flows from the source to the end point, and draw a mind map of the functional information flow based on this; among them, the A node corresponds to a device through which functional information flows.

[0050]The security configuration module is used to collect the loss probability and error probability of each node in the mind map, that is, the availability index of the equipment and the integrity index of the equipment. At the same time, it collects the security information of the power supply equipment that s...

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PUM

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Abstract

The invention discloses a method for constructing a fault tree based on a mind map, which comprises the following steps: 1. Analyzing the functional information flow graph of the system architecture and drawing a mind map of the functional information flow; 2. Collecting the occurrences of each node in the mind map The probability of loss and the probability of error and the safety information of the power supply equipment supplying power to the above nodes; 3. Use the mind map to construct the function loss fault tree and the function error fault tree respectively; 4. For the function loss fault tree, add the influence of power supply equipment 5. Add failure information to all nodes in the function loss fault tree according to the probability of node loss and the safety information of the power supply equipment, and add fault information to all nodes in the function error fault tree according to the probability of node error. The invention realizes the rapid construction of the fault tree and meets the requirement of the avionics system for functional safety analysis.

Description

technical field [0001] The invention relates to a method and system for constructing a fault tree based on a mind map. Background technique [0002] The avionics system is a highly safety-critical system. The availability and integrity of its functional information is an important guarantee for the safety of the aircraft. Using the fault tree to analyze the safety of the function is an important part of the system safety design and analysis. [0003] The traditional fault tree construction process relies on the safety engineer's understanding of the system, and uses a fault tree analysis tool such as Relax to draw. When multiple security engineers work together, it is easy to have different naming conventions for intermediate events, and it is also easy for fault tree analysis to be inconsistent with system function design. The workload of fault tree construction and confirmation is very large, and the reusability is poor. Contents of the invention [0004] In order to me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C5/08G05B23/02G06F16/31G06F16/36
CPCG05B23/0262G07C5/0808G06F16/322G06F16/367
Inventor 董海勇陈龙李娜杨亮周元辉张福凯荣灏张茂帝林谢贵周海燕谷青范姜轶
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST