| 基于LabVIEW的高精度铂电阻测温系统设计 |
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| 引用本文： | 石明江,张禾,何道清.基于LabVIEW的高精度铂电阻测温系统设计[J].计算机测量与控制,2012,20(4):924-925,938. |
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| 作者姓名： | 石明江 张禾 何道清 |
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| 作者单位： | 西南石油大学电气信息学院,四川成都,610500 |
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| 基金项目： | 西南石油大学校级科技基金资助(2010XJZ204) |
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| 摘 要： | 针对铂电阻测温的特性结合虚拟仪器技术,设计了一种高精度温度测量系统;采用四线制恒流源温度测量电路克服由于铂电阻引线带来的误差,同时利用LabVIEW软件完成曲线拟合,最后对温度测量系统误差进行了分析;测试结果表明,系统具有测量精度高、可靠性高、使用灵活等特点,当被测温度范围在8℃～100℃之间,测量的绝对误差小于±0.1℃,可广泛使用于要求高精度温度测量的领域。
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| 关 键 词： | 铂电阻 曲线拟合 虚拟仪器 恒流源 |
Design of High Accurate Platinum Resistance Temperature Measurement System Based on LabVIEW |
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| Shi Mingjing
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Zhang He
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He Daoqing.Design of High Accurate Platinum Resistance Temperature Measurement System Based on LabVIEW[J].Computer Measurement & Control,2012,20(4):924-925,938. |
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| Authors: | Shi Mingjing Zhang He He Daoqing |
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| Affiliation: | (School of Electronic Engineering and Information,Southwest Petroleum University,Chengdu,610500,China) |
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| Abstract: | According to the platinum resistance temperature characteristics and virtual instruments,a high accurate temperature measurement system has designed.The system adopted four-wire temperature measurement,it used constant-current source to overcome the error caused by platinum resistance wire.This system used the LabVIEW software to complete curve fitting.The temperature measurement system errors have been analyzed.The experimental results showed that the system has high accuracy,high reliability and flexibility,if the measured temperature range of between 8℃ to 100℃,the absolute measurement error is less than ±0.1℃,it can be widely applied to the high accuracy temperature measurement field. |
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| Keywords: | platinum resistance curve fitting virtual instruments constant-current source |
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