【摘要】 本文介绍了一种使用廉价的高性能器件组成的高精度、低成本的单片机数据采集系统。对于一般的工业测量及自动控制系统,该采集系统在精度、稳定度、分辨率、价格等方面都比较理想。由 IC17650及 OP—07C 运算放大器组成的数据放大器和 V—F 变换器及压频转换器一起完成小信号放大、A/D 转换,然后经光电隔离将数据送入单片机。更多还原

【Abstract】 This paper introduces a single-chip microcomputer data acquisition system of high-accuracy,low-cost that consists of cheap and high performance devices.For general commercial measurements and automatic control systems,this sample system has ideal characteristic in precision,stability,distinguish ability and price aspects.In the system,small signal amplify,A/D conversion are completed by data amplifier that consists of ICI7650,OP-07C operational amplifier and another part including V-F converter and voltage-frequency converter,then data are sent to single-chip computer after through photoisolator.更多还原