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An EMI array sensor based on differential reception |
WU Yan-Min( ), PENG Zheng-Hui, YUAN Yong-Hu, ZHU Jin-Xiang, LIU Chuang, GE Wei, LING Guo-Ping |
China Research Institute of Radiowave Propagation, Qingdao 266107, China |
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Abstract This study proposes an EMI array sensor based on differential reception, which can effectively improve the comprehensive performance of the EMI system on a vehicle or robot in terms of soil adaptability, positioning accuracy, and anti-interference ability. The EMI array sensor consists of a large transmitting coil and multiple receiving coils, which are horizontally arranged in the transmitting coil. Meanwhile, the receiving coils are a kind of double-D coils to realize differential reception. In this manner, the detection efficiency of unexploded ordnances (UXO) can be effectively improved using the EMI array sensor. The simulated minefield detection test results show that the array sensor proposed in this study can be used for UXO detection and positioning.
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Received: 19 January 2021
Published: 25 February 2022
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Principle block diagram of EMI system
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Emission sequence diagram of multi-periods and bipolar pulses
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Principle block diagram of six receiving channel
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Planar structure of EMI array sensor
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Structure diagram of transmitting coil
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Structure diagram of double-D receiving coil
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Algorithm flow chart
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Response curve of array sensor detecting metal target
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Principal feature extraction
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Major area identification
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Type 72 AT Mine
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Minefield layout
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