基于HART协议的温压补偿型涡街流量计的设计  

Design of vortex flowmeter with temperature and pressure compensation based on HART protocol

作　　者：马永成[1] 莫德举[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《仪器仪表用户》2004年第6期22-24,共3页Instrumentation

摘　　要：在传统涡街流量计的基础上,设计出符合HART协议的两线制一体化温压补偿型涡街流量计。介绍了传感器工作原理和温压补偿方法,给出系统的设计结构和硬件电路组成。着重阐述了HART协议在涡街流量计中的软硬件实现方法,并通过HART调制解调器实现了仪表与上位机之间的双向数字通讯。On the basis of traditional vortex flowmeter.a 2-wire all -in-one vortex flowmeter with temperature and pressure compensation based on HART protocol is designed. Operational principle of sensor and compensation of temperature and pressure are introduced, and structure of system design and the circuit of hardware are present. The design method of software and hardware is described for implementing HART protocol communication in vortex flowmeter.and intercommunication between instrument and computer with HART modems are realized.

关 键 词：涡街流量计 温压补偿 HART协议 两线制 数字通讯 仪表 传感器 上位机 硬件电路 实现方法 

分 类 号：TH814[机械工程—仪器科学与技术] TP212[机械工程—精密仪器及机械]