| 一种高精度温度采集系统的设计 |
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| 引用本文： | 张利,戴全平,蔡定国.一种高精度温度采集系统的设计[J].佛山科学技术学院学报(自然科学版),2003,21(4):35-37. |
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| 作者姓名： | 张利 戴全平 蔡定国 |
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| 作者单位： | 顺德特种电气有限公司,广东,佛山,528300 |
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| 摘 要： | 介绍了一种高精度温度采集系统的结构及工作原理。该系统利用具有一定频率的正弦电压信号驱动特定的温度传感器PT100，通过中央控制单元采集温度数据，并进行DFT运算，求出频率的基波幅值。对基波幅值进行插值校正、滤波处理后，获得实际温度值。该系统方法的结构简单．抗干扰能力强，具有很好的应用价值。
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| 关 键 词： | 温度采集 插值校正 DFT |
| 文章编号： | 1008-0171(2003)04-0035-03 |
| 修稿时间： | 2003年5月26日 |
A method of high precision temperature measurement |
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| ZHANG Li,DAI Quan-ping,CAI Ding-guo.A method of high precision temperature measurement[J].Journal of Foshan University(Natural Science Edition),2003,21(4):35-37. |
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| Authors: | ZHANG Li DAI Quan-ping CAI Ding-guo |
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| Abstract: | A new method of high precision temperature measurement is introduced in this paper, which is different from normal method that the temperature sensor PT100 is driven by sine voltage with frequence f. MCU using Discrete Fourier Translation(DFT)algorithm to process the sampling of temperature sensor and calculate the amplitude V of basic frequnce f. After V being processed by interpolating correction method and filter, the results are true temperature value. This method has many virtues,such as simple hardware,good anti-jamming and high application value. |
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| Keywords: | temperature measurement anti-jamming interpolating correction method Discrete Fourier Translation |
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