基于RS485总线的分布式高精度数据采集系统  

Distributed High-precision Data Acquisition System Based on RS485 Bus

作　　者：陈航 严帅 刘胜 张会新[1] CHEN Hang;YAN Shuai;LIU Sheng;ZHANG Hui-xin(North University of China The Ministry of Education Key Laboratory of Instrument Science and Dynamic Measurement,Taiyuan 030051,China;Beijing Aerospace Systems Engineering Institute,Beijing 100076,China)

机构地区：[1]中北大学,仪器科学与动态测试教育部重点实验室,山西太原030051 [2]北京宇航系统工程研究所,北京100076

出　　处：《仪表技术与传感器》2021年第2期71-74,79,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金杰出青年基金资助项目(61525107)。

摘　　要：针对分布式测试系统中物理量种类多、相互之间易干扰,数据需要远距离传输的要求,设计了一种基于RS485总线的分布式数据采集系统。该系统主要包含上位机、主控站点和被控站点,通过定制USB和RS485总线通信协议,实现了总线上40个站点的轮询测量或单站点单通道测量。实验结果表明,该系统实现了数据的可靠传输,有效解决了大面积环境下进行分布式高精度数据采集的问题,具有较好的实用价值。A distributed data acquisition system based on RS485 bus was designed for the situation that there are many kinds of physical quantities which are easy to interfere with each other,and the data needs to be transmitted over long distances.This system mainly included the host computer,the master station and the controlled station.By customizing the USB and RS485 bus communication protocols,it implemented polling measurement of 40 stations on the bus or single-channel measurement.The experimental results show that the system achieves reliable data transmission and effectively solves the problem of distributed and high-precision data collection in large-scale environment,which has high practical value.

关 键 词：分布式 RS485总线 高精度 智能化 ADS1258 数据采集 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]