基于Sigma Delta和PROFIBUS-DP的模拟量采集仪设计

摘要

为了实现工控现场模拟的精确采集和远距离快速传输，基于SigmaDelta和Profibus—DP技术研制了模拟量采集仪，给出了采集仪硬件电路设计及软件流程图。搭建了试验平台，试验结果表明该设计是有效的。%In order to accurately collect and fastly transmit the analog data over long distance from industrial site, a collector is developed based on Sigma Delta and Profibus-DP technologies. The circuit design of its hardware and software flowchart is offered. The test-platform is set up. The test result shows that the design is successful.