航电系统并行检测过程与检测设备解耦方法

Decoupling method for test process and test devices in parallel testing of avionics systems

航电系统在使用或升级改造过程中进行可靠性检测是必不可少的。特别是在当前批量航电系统大量投入使用的背景下,迫切需要能高效、快速、准确地对系统进行可靠性检测。由于航电系统安全性要求高,内置检测软件受限,需要外置检测设备通过航电系统指定接口进行检测,检测过程也不允许出现任何泄露等行为。检测设备与具体航电系统耦合,检测过程与具体检测设备耦合,难以实现批量航电系统并行检测。为此,通过引入逻辑检测设备,给出了一种航电系统并行检测分层框架,解决检测设备与被测系统耦合的问题,同时也保证了检测的安全性。通过逻辑检测设备、检测跳转机和被测主机上检测行为的描述,给出了一种面向通用航电系统并行检测的检测设备协同机制,解决检测过程与检测设备耦合的问题,从而支持多个航电系统并行检测。最后,实现了一个通用航电系统并行检测系统,并通过实际应用和实验对比验证所提方法的有效性。

Reliability test of avionics system is essential in its use and upgrade.Especially in the current development situation where multi-batch avionics systems are used in practice.there is an urgent need for efficient,fast,and accurate reliability test of the systems.Since the high security requirement of the avionics systems restricts embedding the test software,external test devices are required to test avionics systems through their specified interfaces.What’s more,no leakage is allowed when testing the avionics systems.The test devices are coupled with the avionics system under test and thus the test process is coupled with the test devices which make it difficult to test multiple avionics systems in parallel.Thus,by introducing the logic test device,this paper presents a hierarchical framework for the parallel testing of the avionics systems that could solve the problem of coupling between the test devices and the specified avionics system,ensuring the security of the test process.Based on the description of test behaviors on the logic test device,the test gateway devices,and the tested hosts,a device collaborating mechanism for the general parallel testing of avionics systems is presented.This system could solve the problem of coupling between the test process and the test devices,and thus could support the parallel testing of multiple avionics systems.Finally,ageneral parallel test system of avionics systems is implemented and the effectiveness of the proposed method is verified by practical application and experimental analysis.