某型导弹电缆网导通绝缘性能检测系统设计

Design of conduction and insulation performance test system for the cable net of a certain missile

为了改进传统导弹电缆网检测手段存在的效率低、可靠性差等问题,在总结国内外电缆检测发展现状的基础上,对电缆通断、导通和绝缘等检测的原理、硬件的总线级联、通信和集成、电缆转接、数据库和报表设计等方面进行了研究,开发了一种以工控机、NX电缆测试仪、低压高阻检测模块和电缆转接板为硬件,基于C#和SQL Server 2008的通用电缆自动检测系统。系统通过NX电缆测试仪完成了导通、绝缘电阻检测,专用模块以继电器开关矩阵和带串口的数字万用表分别进行了测点切换和数据采集实现低压高阻检测,各硬件之间经串口或USB实现了通信;通过分析电缆连接关系,设计了电缆转接板实现检测端子的标准化、模块化。根据硬件结构和系统功能划分软件模块,设计了数据库表及用户报表,实现了检测结果的保存、查询和打印。检测及实验结果表明,系统检测的分辨力、准确度、可靠性高,稳定性好,检测速度快,性能满足要求。

In order to improve the traditional testing means of missile cables which is low efficiency,poor reliability etc.,on the basis of summarizing the current domestic and overseas development status of cable testing,the principle of cable disconnection,conduction,insulation and other detections,bus cascade,communication and integration of the hardware,cable switching,the design of database and report,etc.,were studied and a general automatic cable detection system was developed based on industrial PC,NX harness detector,high resistance detection module under low voltage,cable adapter board and C# and SQL Server2008 as software development tools. The NX detector was used to complete the normal conduction,insulation test and the special test module which depends on relay switch matrix（ used to switch from measuring points） and digital multimeter with serialport for data acquisition was designed to accomplish high resistance detecting under low voltage,multiple hardwares communicate between each other through serial ports and USB. By analysising the cable connection,a cable adapter board was designed to achieve the standardization and modularization of the test terminal. The software module was divided according to the hardware structure and system function,database tables and customer reports were designed to achieve the preservation,query and print of the detection results. Experimental results show that the system can detect with high resolution,accuracy and reliability,good stability,fast detection speed and meets the requirements.