Fault diagnosis method based on electronic equipment testability model

Abstract

The invention relates to a fault diagnosis method based on an electronic equipment testability model, which is applicable to field fault diagnosis of all electronic equipment and belongs to the technical field of measurement and control. The main technical points of the method are as follows: the corresponding relationship of equipment fault mode, signal and test is established based on an electronic equipment testability model; a computer analyses out the test logic contained in the testability model according to the corresponding relationship; automatic reasoning is carried out and corresponding test is performed on a diagnosis node according to the fault phenomenon; and before next test diagnosis, the test process is optimized according to the current test result to realize dynamic fault diagnosis logic. The technical effect is that problems such as difficult and high-cost manual troubleshooting and poor flexibility, versatility and expansibility of binary tree-based troubleshooting are overcome fundamentally, and automatic and intelligent field fault diagnosis of electronic equipment can be realized.

Description

technical field [0001] The invention relates to a fault diagnosis method based on a testability model of electronic equipment, which is suitable for on-site fault diagnosis of all electronic equipment and belongs to the technical field of measurement and control. Background technique [0002] With the continuous improvement of the technical level of electronic equipment, under the premise of meeting the requirements of function and performance indicators, the testability has also been highly valued. The integrity of the functional performance of electronic equipment directly affects the completion of the task of the platform. Rapid diagnosis and isolation is particularly important. [0003] At present, electronic equipment mainly adopts the rule-based on-site fault diagnosis mode, usually in the following two ways: [0004] 1. According to the fault phenomena (symptoms) displayed by the equipment, compare the "Maintenance and Troubleshooting Manual" provided by the equipmen...

AI Technical Summary

Problems solved by technology

[0006] It is concluded that the current on-site fault diagnosis of electronic equipment has the following defects: ① manual troubleshooting is complicated and costly, and is not suitable for maintenance support; ② "Maintenance and Troubleshooting Manual" only lists the known common Faults, there are no targeted and effective diagnostic methods and steps for unknown faults; ③The reasoning method of fault diagnosis in the form of binary tree is not flexible. Once the binary tree is edited, the fault diagnosis logic is fixed, and the diagnosis and troubleshooting process cannot change with the fault However, it changes dynamically; ④ poor versatility and expandability, with the finalization of the equipment, the fault diagnosis logic of the binary tree is fixed. After the equipment is upgraded, the original binary tree needs to be recompiled, and the workload is heavy; Great for complex cross-link failures

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