基于LabVIEW 的热敏电阻测量虚拟仿真实验

doi:10.14139/j.cnki.cn22-1228.2023.06.016

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摘要

以惠斯通电桥为基础，用 LabVIEW 成功搭建“热敏电阻测量”虚拟仿真实验平台。对负温度系数热敏电阻进行研究，实现了重要参数A 值和 B值的连续可调。在仿真实验中，通过改变实验温度测得对应的热敏电阻阻值，并实时记录在“数据采集与分析”模块。仿真平台可自动对实验数据进行拟合，直接显示出热敏电阻的温度曲线及其斜率和截距的具体数值，并计算出 A 值和 B 值。多次仿真结果显示，所测热敏电阻 A值和 B 值的相对误差均在 1.0％以下，具有较高精度。该虚拟仿真实验平台实现了传统实验室的全部功能，具有良好的可视化效果，其设计思路可推广到其他实验。

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	邢家林
	张宇飏
	吕梦雪
	毛巍威
	何学敏

关键词: 惠斯通电桥热敏电阻温度特性 B 值线性拟合

Abstract:

Based on the Wheatstone bridge , the virtual simulation experiment platform of “ hermistormeasurement"was successfully built by using labVIEW.The thermistor with a negative temperature coeficientis selected as the research object, and the platform realizes the continuous adjustment of two important parameters , A value and B value.During the virtual simulation process , the user measures the correspondingthermistor resistance by changing the experimental temperature , and records it in the “ data acquisition andanalysis odule in real-time. Subsequently, the simulation platform can automatically perform fitting of theexperimental data ,directly display the temperature curve of the thermistor in real-time , give the specific valuesof its slope and intercept, and finally, calculate the A value and B value.The results of multiple simulationsshow that the relative error of the measured thermistor A value and B value is below 1.0% , which has highaccuracy.The virtual simulation experiment has successfully realized all the functions of “ thermistor measurement in the laboratory" and possesses a good visualization effect.lts design ideas can be applied to theconstruction of other experiment virtual simulation platforms.

Key words: Wheatstone bridge thermistor temperature characteristics B value linear fitting

发布日期: 2023-12-25

ZTFLH:

O 4-39

引用本文:

邢家林 , 张宇飏 , 吕梦雪 , 毛巍威 , 何学敏 . 基于LabVIEW 的热敏电阻测量虚拟仿真实验 [J]. 大学物理实验, 2023, 36(6): 82-87.
XING Jialin, ZHANG Yuyang, LU Mengxue, MAO Weiwei, HE Xuemin. Virtual Simulation Experiment of ThermistorMeasurement Based on LabVIEW . Physical Experiment of College, 2023, 36(6): 82-87.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2023.06.016 或 http://dawushiyan.jlict.edu.cn/CN/Y2023/V36/I6/82

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