基于 PC/AT 总线的最小计算机测控系统

SIMPLEST MEASUREMENT AND CONTROL SYSTEM BASED ON PC/AT COMPUTER BUS

介绍研制的基于ＰＣ／ＡＴ总线的最小计算机测控系统．对该系统硬件重点介绍频率量信号输入的多路快速转换采集通道设计，省二次仪表；满足在线和动态测试的多路模拟采集通道设计；用于控制和调试的两路可调频率方波输出通道设计，省专用设备．采集接口设计时采用ＰＣ／ＡＴ总线，１６位传送数据，支持多任务多用户．对系统软件主要介绍用于液压ＣＡＴ的集成环境软件，采用模块结构，能组合调用，执行快，能测稳态和动态特性，且可绘图显示．应用表明该系统功能多、结构简单、通用．

The development of the simplest measurement and control system based on PC/AT bus is presented.The design of the multichannel fast aquisition for frequency transducers is introduced.To satisfy demands of dynamic and on line measurement,the multichannel analog fast aquisition circuit of measuring two signal at the same time,two frequency output circuit applied to control and test are designed.An integrted software HSCAT applied to hydraulic pump test is given.Applications show that this system has advantages with simplicity,multifunction and universality.