Test results judgment method based on BIT faults

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• 作者：Gang Wang^a ; ^b ; ^{wang2gang2@163.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Jing Qiu^a ; ^b ; ^{qiujing16@sina.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Guanjun Liu^a ; ^b ; ^{gjliu342@qq.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Kehong Lyu^a ; ^b ; ^{fhrlkh@163.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：BIT ; Composite BIT program ; Stress monitor ; Test course ; Test sequence control
• 刊名：Chinese Journal of Aeronautics
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：28
• 期：6
• 页码：1650-1657
• 全文大小：1245 K

文摘

Built-in-test (BIT) is responsible for equipment fault detection, so the test data correctness directly influences diagnosis results. Equipment suffers all kinds of environment stresses, such as temperature, vibration, and electromagnetic stress. As embedded testing facility, BIT also suffers from these stresses and the interferences/faults are caused, so that the test course is influenced, resulting in incredible results. Therefore it is necessary to monitor test data and judge test failures. Stress monitor and BIT self-diagnosis would redound to BIT reliability, but the existing anti-jamming researches are mainly safeguard design and signal process. This paper focuses on test results monitor and BIT equipment (BITE) failure judge, and a series of improved approaches is proposed. Firstly the stress influences on components are illustrated and the effects on the diagnosis results are summarized. Secondly a composite BIT program is proposed with information integration, and a stress monitor program is given. Thirdly, based on the detailed analysis of system faults and forms of BIT results, the test sequence control method is proposed. It assists BITE failure judge and reduces error probability. Finally the validation cases prove that these approaches enhance credibility.