Measurement and Modeling of Electromagnetic Noise in Industrial Environments

doi:10.13190/j.jbupt.2018-127

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2019, Vol. 42 ›› Issue (1): 93-101.doi: 10.13190/j.jbupt.2018-127

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Measurement and Modeling of Electromagnetic Noise in Industrial Environments

YUAN Ze, LIU Liu, ZHANG Kun

School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2018-06-14 Online:2019-02-28 Published:2019-03-08
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Abstract

Abstract: Factory-level electromagnetic noise has a huge impact on industrial Internet of things which mainly uses low-power wireless sensor devices. For this reason, a log periodic antenna and a spectrum analyzer are used to measure the electromagnetic noise in the welding workshop and the office area of a car factory. We obtain the frequency, power and other information of electromagnetic noise in 0.3~3 GHz bands from the frequency domain measurement. The noise spectrum shows a spike shape, and the truncated Laplace distribution can be used for modeling. In time domain measurement, the noise data of 315 MHz, 779 MHz and 916 MHz are collected, and we also get the three parameters of amplitude probability distribution, pulse duration distribution and pulse separation distribution. The measurement results indicate that the results of horizontal and vertical polarization are similar. The influence of noise in the office area is less than that in the welding workshop.

Key words: industrial Internet of things, electromagnetic noise, truncated Laplace distribution

CLC Number:

TN92

YUAN Ze, LIU Liu, ZHANG Kun. Measurement and Modeling of Electromagnetic Noise in Industrial Environments[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2019, 42(1): 93-101.

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Measurement and Modeling of Electromagnetic Noise in Industrial Environments

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