河北工业科技2013，Vol.30Issue(4)：249-252,4.DOI:10.7535/hbgykj.2013yx0407
基于ADS1248高精度测温装置的设计
Design of high precision temperature measuring device based on ADS1248
摘要
Abstract
Due to the strict requirement of environment temperature on the transportation and storage of vaccine,a temperature measuring device with high precision is introduced.Pt100 is selected as temperature sensor,the interference of transmission line is removed by using four-lines measuring method.And a ratio measurement method is designed so that the precision of the system depends only on a high precision resistor.The using chip of ADS1248 contains a PGA amplifier and a 24 bit ADC chip,which reduces the complexity of the device and provides high resolution.The measurement precision reaches 0.1 ℃,meeting the vaccine delivery and storage requirement.关键词
ADS1248/四线制测量/高精度测温/比例法Key words
ADS1248/ four-lines resistance measurement/ high precision temperature measurement/ ratio measurement method分类
机械制造引用本文复制引用
张树青,李妍,王步洲,李朝阳,李国吉..基于ADS1248高精度测温装置的设计[J].河北工业科技,2013,30(4):249-252,4.基金项目
河北省自然科学基金(E2012208006) （E2012208006）
河北省教育厅高等学校科学研究计划(ZH2011243) （ZH2011243）
河北省教育厅高等学校科学研究计划自然科学优秀青年基金(Y2012018) （Y2012018）
