列控车载设备高精度模拟量输入输出模块设计

Design of High Precision Analog Quantity Input and Output Module for Train Control On-board Equipment

论述了列控车载设备上使用的一种高精度模拟量输入输出模块的设计,该模块主要由模拟量输入电路、模拟量输出电路、故障无输出电路、处理器系统、通信子模块组成。阐述了模拟量输入输出模块的原理和实现过程。测试结果表明,该模块性能良好,采样精度高,完全满足列控车载设备对模拟量信号的采集和输出的设计要求。

A high precision analog quantity input and output module for train control on-board equipment was elaborated, which was mainly composed of analog quantity input circuit, analog quantity output circuit, fault free output circuit, processing system and communication sub-module. The design principle and implementation of the analog quantity input and output module were expounded. The test results showed that the module has good performance and high sampling accuracy, which could well meet the design requirements of analog signal acquisition and output for train control on-board equipment.