›› 2016, Vol. 29 ›› Issue (11): 59-.

• 论文 • 上一篇    下一篇

基于AD71752的高精度数据采集系统设计与实现

严小明,谭建宇,谢 明   

  1. (上海理工大学 光电信息与计算机工程学院,上海 200093)
  • 出版日期:2016-11-15 发布日期:2016-11-24
  • 作者简介:严小明(1991-),男,硕士研究生。研究方向:低压测试,高精度数据采集。谢明(1973-),男,讲师。研究方向:新能源电能变换技术。谭建宇(1991-)男,硕士研究生。研究方向:电力电子技术。
  • 基金资助:

    沪江基金资助项目(B1402/D1402)

Design and Implementation Based on the AD71752 HighPrecision Data Acquisition System

YAN Xiaoming,TAN Jianyu,XIE Ming   

  1. (School of opticalElectrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
  • Online:2016-11-15 Published:2016-11-24

摘要:

针对当前数据采集系统要求精度高的问题,设计了一种基于AD71752和STM32F103型单片机构成的高精度数据采集系统。该设计分为硬件部分和软件部分,硬件部分由AD71752模数转换芯片和相应的外围硬件电路构成,软件部分采用SPI三线通信方式,STM32F103型单片机作为主控芯片进行控制。通过对直流电压信号进行数据采集并分析,由实验结果证明,该数据采集系统在采样速率低于200 SPS时,对电压信号有效转换精度高达22 bit。

关键词: AD7175 2, 数据采集, 高精度, 硬件电路

Abstract:

In view of situation that current data collection systems need highprecision performance, this paper designed a high precision data collection systems, based on AD71752 and STM32F103 single chip microcomputer. The system is divided into hardware module and software module. The former is constructed by AD71752 analogdigital conversion chip and its corresponding peripheral hardware circuit, the latter adopts the threewire communication mode, considering STM32F103 as the main control chip. Through the data collecting and analysis of DC voltage signals, the results of experiment show that the sampling rate of the system in is less than 200SPS, and the effective conversion of the voltage signal accuracy is up to 22bit.

Key words: AD7175 2, data collection, hardware circuit, high precision

中图分类号: 

  • TP274+.2