摘要
本文介绍了一种基于HART协议的智能温度变送系统。该系统由AVR单片机、HART芯片SD2015B、A/D转换芯片AD421构成,支持多种传感器信号输入,通过电流环路实现模拟和数字信号的同时传输,能够应用在工业控制、智能仪器仪表等方面,具有较强的实用性。
This paper introduced a kind of intelligent temperature transmission system based on HART protocol.The system consists of a AVR single chip microcomputer,HART chip SD2015B,A/D conversion chip AD421,support for multiple sensor signal input,transfer analog and digital signal through the current loop at the same time,it can be used in industrial control,smart instrumentation,has strong practicality.
出处
《微计算机信息》
2012年第9期141-142,131,共3页
Control & Automation
