基于USB总线的矩阵式绝缘电阻测试模块设计

Design of the Testing Module of Matrix Insulated Resistance Based on USB

介绍了一种基于 USB 总线的绝缘电阻测试模块,给出了模块的主要组成、高压电源和继电器矩阵开关阵列等主要电路的设计原理,支持 USB2.0接口的控制器 CY7C68013的硬件设计方法及主机应用程序开发要点,模块能自动实现多个相互独立电路间测试切换,具有支持热插拔,即插即用,造价低廉等特点。

A testing module of insulated resistance based on USB is introduced in this paper. The main structures of the module, the design principles of main circuits of high voltage powers and the matrix switch array of relays, the firmware design methods of controller CY7C68013 supporting for USB2.0 and the application exploiting outlines of mainframe are given here. The module can be switched among testing of many independent circuits automatically and is many characteristic of supporting for hot plugin and out, plug ＆ play and cheap cost, etc.