工业物联网中的频谱占用及噪声特性分析
PDF下载 (394)张 琨,陶 成,刘 留,袁 泽,张建华.工业物联网中的频谱占用及噪声特性分析[J].宁波大学学报(理工版),2019,32(1):20-25.DOI:
ZHANG Kun,TAO Cheng,LIU Liu,YUAN Ze,ZHANG Jian-hua.Spectrum occupation and noise characteristics of welding workshop in industrial internet of things[J].Journal of Ningbo University(Natural Science & Engineering Edition),2019,32(1):20-25.DOI:
| Title: | Spectrum occupation and noise characteristics of welding workshop in industrial internet of things |
| 作者: | 张 琨, 陶 成, 刘 留, 袁 泽, 张建华 |
| Author(s): | ZHANG Kun, TAO Cheng, LIU Liu, YUAN Ze, ZHANG Jian-hua |
| 关键词: | 工业物联网; 频谱占用; 噪声特性 |
| Keywords: | 5G; internet of things; spectrum occupation; noise characteristics |
| 分类号: | TN92 |
| 文献标识码: | A |
| 摘要: | 工业物联网(Industrial Internet of Things, IIoT)作为5G低功耗大连接物联网的主要场景, 其电磁环境错综复杂. 复杂的电磁环境会对IIoT通信产生一定的干扰, IIoT信道电磁干扰的主要来源是工厂机械设备工作时产生的电磁辐射. 真实准确的频谱占用及噪声特性分析是保证IIoT信息可靠传输的前提. 对某汽车厂焊接车间300MHz~6.5GHz的频谱占用情况进行研究, 结果显示除了已知的电信运营商信号, 车间内主要分布着300MHz~2GHz频段的窄带信号和470~800 MHz频段的宽带信号. 通过办公区与焊接车间测量结果以及相关文献结果的对比, 认为窄带信号来源于工厂的金属焊接和加工; 宽带信号是当地的无线广播电视信号. |
| Abstract: | Industrial Internet of Things (IIoT) is applied in the main areas of 5G massive machine type communication, where the electromagnetic environment is very complex. This electromagnetic environment generates certain interferences to IIoT communications. The main source of the electromagnetic interference in IIoT channels is the electromagnetic radiation generated by the running machines and equipment alike. Knowing the realistic and accurate spectrum occupation and noise characteristics is the precondition to ensure the reliability of IIoT information transmission. In this paper, the measurements for the spectrum occupancy and noise distribution from 300MHz to 6.5GHz in the welding workshop of an automobile factory are taken. The sampled results show that, except for the signals from the telecommunication operator, narrowband signals and broadband signals are generated in this environment. Narrowband signals are mainly distributed at the frequency band from 300MHz to 2GHz; while broadband signals range from 470 to 800MHz. Comparison of measurement results between office area and welding workshop, and the comparison of the related literature and results suggest that the narrowband signals are generated by the metal welding and metal processing in the factory, and the broadband signals are resulted from the local radio and TV signals. |
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| 备注/Memo: | 收稿日期: 2018－06－26. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/基金项目: 北京邮电大学泛网无线通信教育部重点实验室开放课题（KFKT-2018105）; 国家自然科学基金（61471027）; 北京市科技新星计划（Z161100004916068）.第一作者: 张琨（1993－）, 男, 辽宁庄河人, 在读硕士研究生, 主要研究方向: 无线信道测量建模、信号处理. E-mail: zhangkun16@bjtu.edu.cn*通信作者: 刘留（1981－）, 男, 云南昆明人, 博导/教授, 主要研究方向: 无线信道测量与建模、信号处理等. .E-mail: liuliu@bjtu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
