| 基于XTR105的多通道温度测量系统 |
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| 引用本文： | 苏振中,王东,陈俊全,张贤彪.基于XTR105的多通道温度测量系统[J].仪表技术与传感器,2012(8):59-62. |
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| 作者姓名： | 苏振中 王东 陈俊全 张贤彪 |
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| 作者单位： | 海军工程大学舰船综合电力技术国防科技重点实验室 |
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| 基金项目： | 国家自然科学基金项目(50877077);国家自然科学基金创新研究群体项目(50721063) |
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| 摘 要： | 针对一些对测温系统体积、抗干扰能力、测量精度有较高要求的工业环境,介绍了一种利用铂电阻Pt100作为测温传感头,XTR105作为信号调理电路的多通道温度测量系统。分析了系统硬件误差来源,得到了系统输入-输出特性,并采取了线性补偿措施;针对Pt100的非线性,提出了兼顾软件代码执行效率和系统测量精度的非线性校正算法。经测试,不考虑Pt100阻值偏差,系统在0～300℃设计测温范围内,达到了0.1℃的精度。
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| 关 键 词： | Pt100 XTR105 多通道测量 误差分析 线性补偿 非线性校正 |
Multi-channel Temperature Measurement System Based on XTR105 |
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| SU Zhen-zhong,WANG Dong,CHEN Jun-quan,ZHANG Xian-biao.Multi-channel Temperature Measurement System Based on XTR105[J].Instrument Technique and Sensor,2012(8):59-62. |
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| Authors: | SU Zhen-zhong WANG Dong CHEN Jun-quan ZHANG Xian-biao |
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| Affiliation: | (National Key Laboratory for Vessel Integrated Power System Technology,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | Designing for some industrial environment,a kind of multi-channel temperature measurement system was introduced which adopted Pt100 as the temperature measurement device and XTR105 as the signal processing circuit.The demands,such as strong anti-interference capability,high-precision were met.The input-output characteristic was obtained and linear compensation correction technique was taken after analyzing the error sources of system’s hardware.Aimed at solving the nonlinearity of Pt100,a correction algorithm was developed,which can realize both software efficiency and system precision.Actual measurement results show that,leaving the error of Pt100 out of account,the system temperature deviation is less than 0.1 ℃ from 0 ℃ to 300 ℃. |
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| Keywords: | Pt100 XTR105 multi-channel measurement error analysis linear compensation non-linearity correction |
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