基于LabVIEW 的虚拟弗兰克赫兹实验仪
李文韬1 ,孙茜茜1 ,余茗舟2 ,陆辰凌1 ,李永涛3 ,王增旭2,4*
1.南京邮电大学 通信与信息工程学院,江苏 南京21003;2.南京邮电大学 理学院,江苏 南京 21003;3.南京邮电
大学 教务处,江苏 南京 21003;4.南京邮电大学 通达学院,江苏 扬州 225127
Virtual Franck-hertz Experimental Instrument Based on LabVIEW
LI Wentao1 ,SUN Qianqian1 ,YU Mingzhou2 ,LU Chenling1 ,LI Yongtao3 ,WANG Zengxu2,4*
摘要
通过 LabVIEW 平台开发了可以模拟弗兰克赫兹实验过程的虚拟仪器,虚拟弗兰克赫兹实验仪能够模拟实际仪器的所有操作,进行参数设置,给出阳极电流值,同时还扩展了数据的记录与绘图功能。 对弗兰克赫兹实验的物理过程采用蒙特卡洛方法,将弗兰克赫兹管按照电子与氩原子碰撞的平均自由程分段,数值模拟电子的运动过程,由此给出弗兰克赫兹管的伏安特性。 由于数值模拟计算量巨大,基于 LabVIEW 程序的蒙特卡洛算法耗时较长,实时模拟难以实现,另外采用存入多套弗兰克赫兹实验的实测数据,然后根据设置参数进行对所存数据配比组合,以模拟弗兰克赫兹实验的测量过程,这样的结果与真实过程更吻合
关键词:
弗兰克赫兹实验
虚拟仿真
LabVIEW
蒙特卡洛方法
Abstract:
Based on LabVIEW platform, a virtual instrument which can simulate process of Franck-Hertz experiment is developed.The virtual Franck-Hertz experiment instrument can simulate all the operation of the real instrument ,set parameters, give the 1-V value,and on the other hand recording data and drawing at the same time.We use the Monte Carlo method for the physical process of the experiment.The Franck-Hertz tube is divided into segments according to the flat free path of electron collision with argon atom, and the motion process of electron is simulated.Thus,the I-Vcharacteristics of Franck-Hertz tube are given.Because of the great amount of numerical simulation,real-time simulation of Monte Carlo algorithm based on the Labview is too time consuming to achieve.we save severa sets of real franck-Hertz experiment data. then mix them according to the parameters to simulate a Franck-Hertz experiment of measurement process,the result is well agreed with the real process.
Key words:
Franck-Hertzexperiment
virtual reality
LabVIEW
virtual reality
Monte Carlo method
出版日期: 2022-04-25
发布日期: 2022-04-25
整期出版日期: 2022-04-25
引用本文:
李文韬 , 孙茜茜 , 余茗舟 , 陆辰凌 , 李永涛, 王增旭, . 基于LabVIEW 的虚拟弗兰克赫兹实验仪
[J]. 大学物理实验, 2022, 35(2): 79-84.
LI Wentao, SUN Qianqian, YU Mingzhou, LU Chenling, LI Yongtao, WANG Zengxu, . Virtual Franck-hertz Experimental Instrument Based on LabVIEW
. Physical Experiment of College, 2022, 35(2): 79-84.
链接本文:
http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.02.017
或
http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I2/79
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