基于铂电阻Pt100的高精度温度测控系统设计

journal6 ›› 2009, Vol. 30 ›› Issue (3): 71-73.

基于铂电阻Pt100的高精度温度测控系统设计

（1.湖南大学物理与微电子科学学院,湖南长沙 410082;2.湘南学院物电系，湖南郴州 423000）

出版日期:2009-05-25 发布日期:2012-04-23
作者简介:王龙（1976-），男，湖南长沙人，湘南学院物电系教师，湖南大学硕士研究生，主要从事电子系统与专用集成电路研究.

Development of High-Precision Temperature Measurement and Control System Based on Pt100 Platinum Resistance

（1.School of Physics and Microelectronics Science,Hunan University,Changsha 410082，China;2.Department of Physics and Electronic Information Engineering，Xiangnan University，Chenzhou 423000，Hunan China)

Online:2009-05-25 Published:2012-04-23

摘要/Abstract

摘要：工业生产在一定的温度条件下才会按照预定的方向进行，所以温度控制是保证生产过程正常的必需条件.介绍了一种基于铂电阻Pt100的高精度温度测控系统设计方案,系统以Pt100铂电阻作为测温传感器,采用中值平均滤波消除采样值偏差,用逐次逼近法来消除温控系统的非线性,PID算法通过PWM控制执行机构，从而保证了在－200～601 ℃范围内0.1 ℃的测量分辨率,±0.5 ℃的控制精度.

关键词： Pt100, 中值平均滤波, 逐次逼近法, PWM

Abstract: Industrial production at certain temperature conditions will proceed in accordance with the predetermined direction,so temperature control is to ensure normal production process.The author introduces a high-precision temperature measurement and control system based on Pt100 platinum Resistance.Pt100 platinum resistance is used as temperature sensor in the system,median value average filtering is used to eliminate the sampling value of the deviation,successive approximation method to eliminate the non-linear of temperature control system,and PID algorithm to control executing agency through the implementation of PWM.Thus,in -200 ~ 601 ℃,0.1 measurement resolution and ± 0.5 ℃ control precision are ensured.

Key words: PT100；medium value of the average filter；successive approximation method, PWM

王龙. 基于铂电阻Pt100的高精度温度测控系统设计[J]. journal6, 2009, 30(3): 71-73.

WANG Long. Development of High-Precision Temperature Measurement and Control System Based on Pt100 Platinum Resistance[J]. journal6, 2009, 30(3): 71-73.

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