JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (4): 83-88.doi: 10.6040/j.issn.1672-3961.0.2016.112

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High precision algorithm of metal detector based on balance coil

BAI Shuzhong1, DONG Chunyang2*   

  1. 1. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. Jinan Branch, China United Network Communication, Jinan 250002, Shandong, China
  • Received:2016-04-03 Online:2017-08-20 Published:2016-04-03

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Abstract: 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.

Key words: product effect, balance coil, detection algorithm, metal detection, eddy current

CLC Number: 

  • TP391
[1] 鲁光宇. 金属探测技术发展综述[J]. 地学仪器, 1992, 92(1):1-10. LU Guangyu. Overview and development of metal detection[J]. Earth Science Instrument, 1992, 92(1):1-10.
[2] 刘慧娟,李志刚. 一种基于电压和频率的金属探测方法[J]. 仪器仪表学报, 2006, 27(7):769-772. LIU Huijuan, LI Zhigang. Metal detection method based on voltage and frequency[J]. Chinese Journal of Scientific Instrument, 2006, 27(7):769-772.
[3] 王玉琦, 韩海燕, 郝智慧. 金属检测器在食品工业中的应用[J]. 长春大学学报, 2007, 17(2):71-73. WANG Yuqi, HAN Haiyan, HAO Zhihui. Application of metal detectors in food industry[J]. Journal of Changchun University, 2007, 17(2):71-73.
[4] 周茂林,项安. 全数字食品金属检测机信号处理系统仿真[J]. 计算机仿真,2013, 30(9):208-212. ZHOU Maolin, XIANG An. Simulation of all-digital metal detector[J]. Computer Simulation, 2013, 30(9):208-212.
[5] YARNAZAKI Sadaol, NAKANE Hiroshi, TANAKA Akio. Basic analysis of a metal detector[J]. IEEE Transactions on Instrumentation and Measurement, 2002, 51(4):810-814.
[6] LIU Baobin, WEI Zhou. The research of metal detectors using in food industry[C] //2011 International Conference on Electronics and Optoelectronics. Piscataway, USA: IEEE Computer Society, 2011:43-45.
[7] JAKUB Svatos, JOSEF Vedral. The usage of frequency swept signals for metal detection[J]. IEEE Transactions on Magnetics, 2012, 48(4):1501-1504.
[8] 庞瑞帆,钟翔,胡泷,等. 双频金属探测器的研究[J]. 解放军理工大学学报(自然科学版), 2011, 2(2):1-8. PANG Ruifan, ZHONG Xiang, HU Long, et al. Research on dual frequency metal detector[J]. Journal of PLA University of Science and Technology, 2011, 2(2):1-8.
[9] 彭建学,叶银忠,侍尉,等. 基于跨导测量的金属探测方法[J]. 电测与仪表, 2013, 50(586):82-85. PENG Jianxue, YE Yinzhong, SHI Wei, et al. A new method for detecting metal based on trans-conductance measurement[J]. Electrical Measurement & Instrumentation, 2013, 50(586):82-85.
[10] 曹青松,周继惠. 基于电涡流的金属种类识别技术的理论与实验研究[J].仪器仪表学报, 2007, 28(9):1718-1722. CAO Qingsong, ZHOU Jihui. Theoretical and experimental study on metal type identification based on eddy current[J]. Chinese Journal of Scientific Instrument, 2007, 28(9):1718-1722.
[11] 贺桂芳. 一种新型智能金属探测仪的设计[J]. 仪表技术与传感器, 2006,1(1):13-14. HE Guifang. Design of new intelligent metal detector[J]. Instrument Technique and Sensor, 2006, 1(1):13-14.
[12] 张起祥, 祖大鹏. 无接触式电阻率的测量[J]. 电测与仪表, 2002, 39(5):21-23. ZHANG Qixiang, ZU Dapeng. Measuring resistivity without touching the subject[J]. Electrical Measurement & Instrumentation, 2002, 39(5):21-23.
[13] 胡业发, 武志鹏, 王春麟. 探头线圈厚度对电涡流位移传感器性能影响的研究[J]. 电测与仪表, 2006, 43(4):19-26. HU Yefa, WU Zhipeng, WANG Chunlin. The research on the effect for the performance of the current eddy shifting sensor by the thickness of the probe coil[J]. Electrical Measurement & Instrumentation, 2006, 43(4):19-26.
[14] 张学勇, 赵群, 李义宝,等. 一种金属探测器的设计[J]. 安徽建筑工业学院学报(自然科学版), 2007, 15(3):74-77. ZHANG Xueyong, ZHAO Qun, LI Yibao, et al. Design of a metal detector[J]. Journal of Anhui Institute of Architecture & Industry(Natural Science), 2007, 15(3):74-77.
[15] SILVESTER Peter P, OMERAGIC Dzevat. Sensitivity maps for metal detector design[J]. IEEE Transactions on Geoscience and Remote Sensing, 1996, 34(3):788-792.
[16] 苏庆丰, 李智, 牛军浩. 金属探测器的平衡式线圈最佳空间位置研究[J]. 国外电子测量技术, 2010, 29(3): 20-22. SU Qingfeng, LI Zhi, NIU Junhao. Research of the best spatial location for balanced coil on metal detector [J]. Foreign Electronic Measurement Technology, 2010, 29(3):20-22.
[17] 明军,贾海波,王新. 一种在线智能金属检测装置[J]. 仪表技术与传感器, 2013, 5(5):20-22. MING Jun, JIA Haibo, WANG Xin. Online intelligent metal detector[J]. Instrument Technique and Sensor, 2013, 5(5):20-22.
[18] RESTIVO Maria Teresa. Case study of induced eddy currents[J]. Sensors and Actuators, A: Physical, 1996, 51(2):203-210.
[19] 郑亮,郑士海. 嵌入式系统开发与实践:基于STM32F10x系列[M]. 北京:北京航空航天大学出版社,2015.
[20] 胡广书. 数字信号处理:理论、算法与实现[M].2版.北京:清华大学出版社,2003.
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