Through-Metal-Wall Power Delivery and Data Transmission for Enclosed Sensors: A Review

Sensors

Ding-Xin Yang¹  Zheng Hu¹  Hong Zhao²  Hai-Feng Hu²  Yun-Zhe Sun²  Bao-Jian Hou² 

[1] Science and Technology on Integrated Logistics Support Laboratory, National University of Defense Technology, Changsha 410073, China

关键词: through metal wall;    power delivery;    data transmission;    metallic enclosed sensors;   

DOI  :  10.3390/s151229870

来源: mdpi

【 摘 要 】

The aim of this review was to assess the current viable technologies for wireless power delivery and data transmission through metal barriers. Using such technologies sensors enclosed in hermetical metal containers can be powered and communicate through exterior power sources without penetration of the metal wall for wire feed-throughs. In this review, we first discuss the significant and essential requirements for through-metal-wall power delivery and data transmission and then we: (1) describe three electromagnetic coupling based techniques reported in the literature, which include inductive coupling, capacitive coupling, and magnetic resonance coupling; (2) present a detailed review of wireless ultrasonic through-metal-wall power delivery and/or data transmission methods; (3) compare various ultrasonic through-metal-wall systems in modeling, transducer configuration and communication mode with sensors; (4) summarize the characteristics of electromagnetic-based and ultrasound-based systems, evaluate the challenges and development trends. We conclude that electromagnetic coupling methods are suitable for through thin non-ferromagnetic metal wall power delivery and data transmission at a relatively low data rate; piezoelectric transducer-based ultrasonic systems are particularly advantageous in achieving high power transfer efficiency and high data rates; the combination of more than one single technique may provide a more practical and reliable solution for long term operation.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.