An EMI array sensor based on differential reception

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.