基于AD537V／F转换器的高精度智能测温仪设计  

Design of a high accuracy intellectualized temperature measure system on AD537V/F converter

作　　者：黄向慧[1] 黄向东[1] 

机构地区：[1]西安科技大学,西安710054

出　　处：《仪器仪表学报》2006年第z2期1561-1562,共2页Chinese Journal of Scientific Instrument

摘　　要：介绍了利用铂电阻PT1000作为温度传感器,以高精度、高线性度的电压／频率转换器AD537构建的高精度智能温度测量系统。利用AD537直接将电阻值转换成频率信号,供后续微处理器进一步处理。减少了一般测量系统中用电阻-电压转换电路以及信号调理电路带来的误差。经实际应用表明,此系统实现了高精度的温度测量,使误差不超过±0．2℃。This paper introduces a high accuracy temperaturement system method, which using platinum resistor as the temperature sensor,using high accuracy and high linearity AD537V/F converter. Resistance is conversed to be frequency signal by AD537. then , this signal is sent to be processed in microcomputer. This system reduce measuring error, which created by using contains R-V converted circuit and signal amplifyier circuit in general measure system. Through practical application, this system has realized high accuracy temperature measurement, this method makes the measuring error less than±0. 2℃.

关 键 词：铂电阻 AD537V/F变换 微处理器 高精度温度测量 

分 类 号：TH7-55[机械工程—仪器科学与技术]