星上电缆自动导通绝缘测试仪的设计与开发

摘要

Satellite Cable plays a key role in the transfer of energy and information in spacecraft system engineering,and it is not repairable after liftoff,which determines that it must be of high quality and high reliability in electric performance.In view of the disadvantages of the traditional manual mode of conduction test and insulation test,such as high work intensity,low detection efficiency and low reliability,this paper designs and develops an automatic detection instrument.The instrument is based on the idea of modular design with the central controller for each module control unit to respectively realize test channel automatic switching,the test voltage supply,the star cable conduction insulation resistance data acquisition,communication,storage and display.The practice has shown that the cable automatic insulation test instrument can not only improve the reliability of the conduction and insulation test,but also enhance the quality control.On the other hand.it can improve the efficiencv,save the production cycle,and reduce the labor intensity.%星上电缆在航天器系统工程中起到了传递能量和信息的关键作用,并且其上天后具有不可修复性,这就决定了它在电性能检测方面必须做到高质量与高可靠;针对传统人工方式进行导通绝缘测试时工作强度大、检测效率低下和可信度低等缺点,设计并开发了一种星上电缆自动导通绝缘测试仪;该仪器基于模块化设计的思想采用中央控制器对各个模块单元进行控制来分别实现测试通道自动切换、测试电压的供给、星上电缆导通绝缘电阻的数据采集、通讯、存储和显示;实践结果表明,星上电缆自动导通绝缘测试仪一方面可以提高电缆导通绝缘测试的可靠性,增强质量控制;另一方面,可以提高效率,节省生产周期,降低劳动强度.