标题：High Precision Algorithm of Metal Detector Based on Balance Coil
作者：Bai, Shuzhong; Bai, Yuhua
作者机构：[Bai, Shuzhong] Shandong Univ, Sch Elect Engn, Jinan, Shandong, Peoples R China.; [Bai, Yuhua] Shandong Univ, Sch Control Sci & Engn, Jinan, Shandon 更多
会议名称：21st International Conference on Electrical Machines and Systems (ICEMS)
会议日期：OCT 07-10, 2018
来源：2018 21ST INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS)
关键词：metal detector; balanced coil; product effect; eddy current
摘要：Metal detector is widely used in food security and industrial manufacture. In order to solve the product effect problem which used only amplitude feature, the dual channel digital detecting algorithm was put forward, based on amplitude and phase information. Also, the balance coil mathematical model was built, and the metal signal feature was deeply analyzed. Through the coordinate orientating, the amplitude and phase information of metal could be exactly extracted, product learning and clustering algorithm could efficiently separate the metal signal and product effect signal. The experiment results showed that the phase information could separate different material metal effectively, cooperated with the amplitude information, the dual channel digital detecting algorithm could extract the metal information accurately and detect the metal with strong product effect.