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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。
This paper introduces the design and debugging of the status input and control signal output plug-in for automatic detection system of train wheels from the circuit design point of view. The components based on the PC-ISA bus platform, including multi-channel A / D and D / A conversion and multi-channel digital signal input and output technology.