基于传递函数法的PT100的高精度测温设计  

Design of high precision temperature measurement of the transfer function based on PT100

作　　者：邓友[1] 丁卫撑[1] 陈浩峰[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,成都610059

出　　处：《电子测量技术》2015年第12期92-95,共4页Electronic Measurement Technology

摘　　要：针对铂热电阻在工业温度测量中的应用,提出基于传递函数法的非线性校正方法并验证了其优越性和实用性。给出了一种基于PT100三线制连接的多点测温系统的设计方案,该系统以C8051F410处理器为核心,采用片内ADC分时控制,实现多路温度采集。实践表明,本方案可以提高温度测量精度和系统开发效率,可广泛应用于工业控制领域。For application of PT100 in industrial temperature measurement,the transfer function method based nonlinear correction is proposed and its superiority and practicality is verified.Multi-point temperature program is designed based on three-wire PT100,using C8051F410 processor as the core,using the on-chip ADC time-shared control,and multi-channel temperature acquisition is realized.Practice showed that this scheme can increase the temperature measurement accuracy and efficiency of system development,and can be widely used in industrial control field.

关 键 词：PT100 温度 非线性 

分 类 号：TH811[机械工程—仪器科学与技术]