电工技术学报  2022, Vol. 37 Issue (4): 808-815    DOI: 10.19595/j.cnki.1000-6753.tces.L90235
电工理论 |
无线传感器网络单线电能传输系统的电磁安全性分析
李阳, 李垚, 王瑞, 翟宇洁, 石少博, 胡涛成
天津工业大学电工电能新技术天津市重点实验室 天津 300387
Electromagnetic Safety Analysis on Single Wire Power Transfer System Based on Wireless Sensor Networks
Li Yang, Li Yao, Wang Rui, Zhai Yujie, Shi Shaobo, Hu Taocheng
Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology Tiangong University Tianjin 300387 China
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摘要 目前,无线传感器网络最成熟的供电方式是电池供电,但由于该方法需要频繁更换电池,导致供电可靠性变差。单线电能传输可以兼顾传输距离与传输效率,同时具有分布灵活、无方向性的特点,因此可以用来解决无线传感器网络电池供电的问题。该文针对单线电能传输系统电磁安全性问题,首先建立有电容球、无电容球两种单线电能传输系统模型及人体模型;然后对两种系统模型的电磁安全性进行仿真分析,主要对比研究了二者的空间电磁场分布、空间电磁场强度、体内电场强度和体内电流密度;最后利用实验的方法对仿真结果进行验证。研究表明,与有电容球系统相比,无电容球系统的各物理量数值均小于有电容球系统,其更符合限制时变电场和磁场的安全标准。
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李阳
李垚
王瑞
翟宇洁
石少博
胡涛成
关键词 无线传感器网络单线电能传输电磁安全仿真分析    
Abstract:At present, the most mature power supply method for wireless sensor networks is battery, but this method requires frequent battery replacement, resulting in poor power supply reliability. Single wire power transfer can take into account the transmission distance and transmission efficiency, and has the characteristics of flexible distribution and non-directivity. Therefore, it can be utilized to solve the problem of reliability of battery in wireless sensor networks. Aiming at the electromagnetic safety problem of single wire power transfer system, two single wire power transfer system models with and without capacitor balls, and human body models were first established. Then, the electromagnetic safety of the two system models was simulated and analyzed. The spatial electromagnetic field distribution, the spatial electromagnetic field strength, the electric field strength in vivo and the current density in vivo of the two systems are compared. Finally, the experimental system was used to verify the simulation. The results show that, compared with the system with the capacitor balls, the value of each physical quantity of the system without capacitor balls is smaller, which is more in line with the safety standards of limiting time-varying electric and magnetic fields.
Key wordsWireless sensor networks    single wire power transfer    electromagnetic safety    simulation analysis   
收稿日期: 2020-07-04     
PACS: TM15  
基金资助:国家自然科学基金(51877151, 51577133)和天津市高等学校创新团队培养计划(TD13-5040)资助项目。
通讯作者: 李阳 男,1979年生,教授,博士生导师,研究方向为无线电能传输理论与应用。E-mail: liyang@tiangong.edu.cn   
作者简介: 李垚 女,1996年生,硕士研究生,研究方向为无线电能传输技术。E-mail: ly1931065389@163.com
引用本文:   
李阳, 李垚, 王瑞, 翟宇洁, 石少博, 胡涛成. 无线传感器网络单线电能传输系统的电磁安全性分析[J]. 电工技术学报, 2022, 37(4): 808-815. Li Yang, Li Yao, Wang Rui, Zhai Yujie, Shi Shaobo, Hu Taocheng. Electromagnetic Safety Analysis on Single Wire Power Transfer System Based on Wireless Sensor Networks. Transactions of China Electrotechnical Society, 2022, 37(4): 808-815.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L90235          https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I4/808