标题：An Improved High-sensitivity Metal Detector
作者：Yang, Yong; Liu, Zhi-Zhen; Cong, Min
作者机构：[Yang, Yong; Liu, Zhi-Zhen; Cong, Min] Shandong Univ, Sch Elect Engn, Jinan, Peoples R China.
会议名称：International Conference on Electrical Engineering and Mechanical Automation (ICEEMA)
会议日期：JUN 13-14, 2015
来源：INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING AND MECHANICAL AUTOMATION (ICEEMA 2015)
关键词：Metal Detector; Balance Coil Technology; ATmega8
摘要：This paper introduces the present situation of metal detector and analyzes the distribution of magnetic field of the general balance coil based on the electromagnetic characteristics of the current coil. An improved balance coil structure is given to meet different application requirements. Firstly the principle of the improved balance coil is analyzed. Then a set of high-sensitivity metal detector is designed, which consists of sensor, signal processing circuit and single-chip microcomputer. The test result shows that the new metal detector is valid.