基于恒流源激励的PT100测温电路在锅炉控制系统中的应用与研究
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摘要
本文针对锅炉控制系统在酒店建筑设计中所面对的特殊要求-实现对众多分散的出水端温度进行准确测量和温度控制,以及分析现有锅炉通用控制系统存在的硬件成本因测温节点众多而显著增加的问题,采用了4通道PT100智能温度测量模块的方案,之后详细阐述了使用单电源供电的运放来设计恒流源激励的铂电阻PT100的温度传感器电路,并在此基础上实现了高精度、低成本的,并可以与台达PLC接口的RS485智能温度测量模块的设计,最后给出了实验分析结果。
Analysisof the special requirement for boiler electrical control system to be utilized in the Hotel building design has been made,that control system has a technical ability of measuring the water temperature accurately in distributed water outlet and keeping the temperature of output water is controllable.The issue analysis of electrical hardware cost to be increased in the boiler general control system by adding ofthe temperature measurement node has being presented,the new design schema has been made to design a 4 channel PT100 intelligent temperature measurement module,to enrich how to design temperature sensing circuits with platinum PT100 exciting by constant current source,employing operational amplifier powered with single supply. Accomplishment of high precise and low cost temperature sensing circuits and to build an intelligent temperature sensing electronics module,providing the capability interface with PLC over RS485 cable,finally,provided the testing analysis results of temperature sensor circuits.
Analysisof the special requirement for boiler electrical control system to be utilized in the Hotel building design has been made,that control system has a technical ability of measuring the water temperature accurately in distributed water outlet and keeping the temperature of output water is controllable.The issue analysis of electrical hardware cost to be increased in the boiler general control system by adding ofthe temperature measurement node has being presented,the new design schema has been made to design a 4 channel PT100 intelligent temperature measurement module,to enrich how to design temperature sensing circuits with platinum PT100 exciting by constant current source,employing operational amplifier powered with single supply. Accomplishment of high precise and low cost temperature sensing circuits and to build an intelligent temperature sensing electronics module,providing the capability interface with PLC over RS485 cable,finally,provided the testing analysis results of temperature sensor circuits.
引文
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[13]李伟,荆强征,张竑斌,等.基于运行优化控制算法的层燃工业锅炉控制系统研发及应用[J].工业锅炉,2017(2):30-33.
[14]骆丽,杨永刚,胡文涛,等.基于Pt100的高精度测温电路[J].北京交通大学学报,2017,41(5):52-57.
[15]敖振浪,吕雪芹,雷卫延.同基准16路电流型测温电路设计与应用[J].计算机测量与控制,2017,25(5):62-66.
[16]董亮,雷良育,李雪原,等.基于Proteus的惠斯通电桥测温电路仿真设计[J].广西民族大学学报(自然科学版),2017,23(2):74-77.
[2]轩子路.基于单片机的测温电路设计研究[J].山东工业技术,2018(5):54.
[3]周登山.基于单片机的测温及温控系统的设计与研究[J].电子世界,2017(18):195.
[4]张晓曦,窦爱萍,贾超群.基于ADS1148的铂电阻测温电路设计[J].信息通信,2017(4):84-86.
[5]胡文涛.基于无线传感器网络的天文望远镜高精度温度测量方案的研究[D].北京:北京交通大学,2014.
[6]陈桂生,付志勇,朱育红.业铂热电阻不同检定方法检定结果可信度研究[J].国测试,2014,40(6):18.
[7]张昕,张贝克.深入浅出过程控制[M].北京:高等教育出版社,2013.
[8]万瑞文,周倩倩.基于自适应模糊PID控制的水轮机调节系统[J].人民长江,2016,47(4):79-83.
[9]王富强.工业燃气锅炉控制系统的研究和设计[D].上海:东华大学,2011.
[10]黄超.基于神经网络的锅炉控制系统设计[J].科技风,2018(4):3.
[11]马丽萌,谭光韬.浅议基于PCS7的锅炉控制系统的设计和实现[J].电子世界,2017(9):106.
[12]朱清智,申一歌.锅炉压力控制系统模糊控制的研究[J].精密制造与自动化,2017(1):17-19.
[13]李伟,荆强征,张竑斌,等.基于运行优化控制算法的层燃工业锅炉控制系统研发及应用[J].工业锅炉,2017(2):30-33.
[14]骆丽,杨永刚,胡文涛,等.基于Pt100的高精度测温电路[J].北京交通大学学报,2017,41(5):52-57.
[15]敖振浪,吕雪芹,雷卫延.同基准16路电流型测温电路设计与应用[J].计算机测量与控制,2017,25(5):62-66.
[16]董亮,雷良育,李雪原,等.基于Proteus的惠斯通电桥测温电路仿真设计[J].广西民族大学学报(自然科学版),2017,23(2):74-77.