摘要
针对转台周围环境温度的精密控制需要精准的测量方法,而当前铂电阻测温系统存在量程单一、电路复杂等问题,设计了基于Pt1000的量程可控、高分辨率的测温系统。该系统有效简化了电路结构,同时基于电路3参数计算方法,有效实现了测温量程的灵活控制及最小温度分辨能力的提升。经过理论推导、仿真及试验,证明该测温系统在Pt1000全工作量程内的测温量程可任意控制,并可实现0.02℃的最小温度分辨能力。
In order to control the precision control of the ambient temperature around the turntable,the current plat- inum resistance temperature measuring system has a single range and complex circuit,and a range controlled and high resolution temperature measurement system based on Pt1000 is designed. The circuit structure of the system is effectively simplified,meanwhile,a method named 3-parameter circuit calculation on the basis of the system is provid- ed to control the range of temperature measurement and improve the minimum temperature resolution as needed. Through theoretical deduction,simulation and test,it is proved that the temperature measurement range of the tem- perature measuring system can be controlled arbitrarily in the full range of Pt1000 working range,and the minimum temperature resolution at 0.02 ℃ can be realized.
作者
路傲轩
刘品宽
LU Ao-xuan;LIU Pin-kuan(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,Chin)
出处
《自动化与仪表》
2018年第6期64-68,91,共6页
Automation & Instrumentation
基金
国防基础科研科学挑战专题项目(JCKY2016212A506-0105)
关键词
测温系统
铂热电阻
温度采集
测温量程
温度控制
temperature measurement system
platinum thermal resistance
temperature collection
temperature measure-ment range
temperature controlling
