【摘要】 本文从电路设计角度介绍了用于火车车轮自动检测系统状态输入及控制信号输出插件的设计和调试。本组件基于ＰＣ－ＩＳＡ总线平台，主要包括多通道Ａ／Ｄ和Ｄ／Ａ变换以及多路数字信号输入输出技术的实现。更多还原

【Abstract】 From the view of circuit design, the paper introduces the principle, design and construction of the control module for the ultrasonic auto inspecting system for train wheels. Based on PC ISA bus, the module mainly includes the technology of multichannel A/D and D/A convertion and multiplex digital signal input and output.更多还原