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Method aiming at evaluating capability of test configuration on continuously diagnosing faults

A technology for testing configuration and evaluation methods, applied in the field of testing, which can solve problems such as the level of sustainable diagnosis, lack of analysis and evaluation methods and supporting tools, and multiple failures.

Inactive Publication Date: 2011-12-07
天航长鹰(江苏)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In system work, multiple failures often occur gradually
However, whether this single-fault-oriented test configuration and diagnosis strategy can effectively diagnose the gradual occurrence of multiple faults, that is, the level of continuous diagnosis capability, currently lacks effective analysis and evaluation methods and supporting tools.

Method used

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  • Method aiming at evaluating capability of test configuration on continuously diagnosing faults
  • Method aiming at evaluating capability of test configuration on continuously diagnosing faults
  • Method aiming at evaluating capability of test configuration on continuously diagnosing faults

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Embodiment Construction

[0060] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0061] The test configuration principle of an avionics system is as follows: Figure 4 As shown, the faults in the avionics system are composed as follows:

[0062] Air Data System Failure F 1 ;Radio altimeter failure F 2 ;Weather radar failure F 3 ;Integrated navigation system failure F 4 ;Aeronautical map navigation device failure F 5 ;Earth proximity warning device failure F 6 .

[0063] The current test configuration for this avionics system consists of three tests: Weather Channel Test T 1 ;Navigation channel test T 2 ;Alarm channel test T 3 .

[0064] The evaluation method of the present invention for the fault continuous diagnosis capability of test configuration comprises the following steps, such as figure 1 Shown:

[0065] Step 1: Identify all branch nodes that can continuously diagnose faults.

[0066] Step 1: Determine detecta...

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Abstract

The invention provides a method aiming at evaluating the capability of test configuration on continuously diagnosing faults. The method comprises the following steps of: firstly, determining all branch nodes capable of continuously diagnosing the faults and establishing all combinations capable of continuously diagnosing the faults; secondly, evaluating the capability on continuously diagnosing the faults according to the results gained; and finally, determining the weakness of the test configuration and providing suggestions on improving the test configuration. The method fills in the gap inthe method for evaluating the capability of the test configuration in the system on continuously diagnosing a plurality of sequentially occurred faults, and is feasible to evaluate the capability of the test configuration on continuously diagnosing the faults and to improve the test configuration.

Description

technical field [0001] The invention relates to a method for evaluating the continuous fault diagnosis capability of a test configuration, which belongs to the technical field of testing. Background technique [0002] The purpose of product testability design is to enable product failures to be quickly and accurately detected and isolated. No matter using internal test or external test, various tests are required to complete fault detection and isolation, so the selection of test configuration is an important task in testability design. [0003] Correlation theory is an important method for test configuration analysis that has emerged in recent years. This method is based on the single fault assumption and uses qualitative models (including testability models and correlation matrices) to express the relationship between product failures and tests. Determine the importance of the test according to the relationship, and give the selected test set and the diagnosis strategy co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 石君友史萌
Owner 天航长鹰(江苏)科技有限公司