本文選題：磁場(chǎng)探頭 + 亥姆霍茲線圈��； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：作為國(guó)家強(qiáng)制檢定的計(jì)量設(shè)備之一,場(chǎng)強(qiáng)探頭是電磁輻射測(cè)量?jī)x的重要組成部分,也是電磁兼容檢測(cè)和環(huán)境電磁檢測(cè)領(lǐng)域常用的測(cè)量設(shè)備。由于國(guó)內(nèi)只有很少的計(jì)量機(jī)構(gòu)能夠開(kāi)展部分磁場(chǎng)探頭的校準(zhǔn),為進(jìn)一步拓寬磁場(chǎng)探頭校準(zhǔn)能力,保證更多的磁場(chǎng)探頭處于受控狀態(tài),中國(guó)計(jì)量科學(xué)研究院電磁兼容實(shí)驗(yàn)室開(kāi)展了500kHz～1MHz頻率范圍內(nèi)以亥姆霍茲線圈作為場(chǎng)發(fā)生裝置的磁場(chǎng)探頭校準(zhǔn)系統(tǒng)的研究與建立。 本文介紹了亥姆霍茲線圈磁場(chǎng)探頭校準(zhǔn)系統(tǒng)的組成和儀器特性,詳細(xì)研究了亥姆霍茲線圈的相關(guān)特性、均勻場(chǎng)的產(chǎn)生原理以及磁場(chǎng)探頭的校準(zhǔn)方法,并采用Ansoft Maxwell和MATLAB建立亥姆霍茲線圈模型進(jìn)行仿真,根據(jù)仿真結(jié)果分析了線圈內(nèi)部均勻磁場(chǎng)的分布特點(diǎn)和磁場(chǎng)探頭對(duì)內(nèi)部場(chǎng)的擾動(dòng)影響。通過(guò)LabVIEW對(duì)系統(tǒng)儀器進(jìn)行程控,實(shí)現(xiàn)了磁場(chǎng)探頭校準(zhǔn)系統(tǒng)的自動(dòng)化測(cè)試、數(shù)據(jù)采集以及自動(dòng)生成報(bào)告等功能。最后,對(duì)建立的磁場(chǎng)探頭校準(zhǔn)系統(tǒng)進(jìn)行測(cè)量不確定度評(píng)定,并在評(píng)定過(guò)程中改善校準(zhǔn)方法、提高校準(zhǔn)精度。 本校準(zhǔn)系統(tǒng)的建立進(jìn)一步擴(kuò)展了中國(guó)計(jì)量院磁場(chǎng)探頭校準(zhǔn)的頻率范圍,提高了磁場(chǎng)探頭的校準(zhǔn)水平；同時(shí)磁場(chǎng)探頭自動(dòng)化校準(zhǔn)軟件的開(kāi)發(fā)與使用,在保證測(cè)量結(jié)果可靠、可信的程度上,提高了磁場(chǎng)探頭校準(zhǔn)的效率,使之能夠更好地為社會(huì)服務(wù)。
[Abstract]:As one of the metrological equipments for compulsory verification in our country, the field intensity probe is an important part of electromagnetic radiation measuring instrument, and it is also the commonly used measuring equipment in the field of electromagnetic compatibility testing and environmental electromagnetic detection.Since only a few metering institutions in China can carry out calibration of partial magnetic field probes, in order to further expand the calibration capability of magnetic field probes and ensure that more magnetic field probes are in a controlled state,The electromagnetic compatibility Laboratory of the Chinese Academy of Metrology has carried out the research and establishment of a magnetic field probe calibration system with Helmholtz coil as the field generator in the 500kHz~1MHz frequency range.In this paper, the composition and instrument characteristics of the magnetic field probe calibration system for Helmholtz coil are introduced. The related characteristics of the Helmholtz coil, the principle of uniform field generation and the calibration method of the magnetic field probe are studied in detail.The Helmholtz coil model is established by Ansoft Maxwell and MATLAB. The distribution characteristics of the uniform magnetic field in the coil and the disturbance effect of the magnetic field probe on the inner field are analyzed according to the simulation results.The automatic test, data acquisition and automatic report generation of the calibration system of magnetic field probe are realized through the program control of the system instrument by LabVIEW.Finally, the measurement uncertainty of the calibration system of magnetic field probe is evaluated, and the calibration method is improved and the calibration precision is improved.The establishment of the calibration system has further expanded the frequency range of magnetic field probe calibration in the Chinese Institute of Metrology, and improved the calibration level of the magnetic field probe. At the same time, the development and use of the automatic calibration software for the magnetic field probe have ensured the reliability of the measurement results.To the extent of credibility, the calibration efficiency of magnetic probe is improved and it can serve the society better.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM937

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本文編號(hào)：1745718