Design of Acoustic Magnetic Label Detection System Based on SVM and FPGA Implementation

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Design of Acoustic Magnetic Label Detection System Based on SVM and FPGA Implementation

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[1]Cheng Jian,An Hongbo,Guo Yinan,et al.Design of Acoustic Magnetic Label Detection System Based on SVM and FPGA Implementation[J].Journal of Zhengzhou University (Engineering Science),2021,42(03):13-.[doi:10.13705/j.issn.1671-6833.2021.03.003]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 42卷 Number of periods: 2021 03 Page number: 13- Column: Public date: 2021-05-10

Title:: Design of Acoustic Magnetic Label Detection System Based on SVM and FPGA Implementation

Author(s):: Cheng Jian; An Hongbo; Guo Yinan; Ye Liang;; The Institute of Mining of the General Institute of Coal Sciences; School of Information and Control Engineering, China University of Mining and Technology; School of Electromechanical and Electromechanical Engineering, China University of Mining and Technology (Beijing);

Keywords:: EAS; acoustic magnetic; support vector machine; FFT; FPGA

CLC:: -

DOI:: 10.13705/j.issn.1671-6833.2021.03.003

Abstract:: In strong electromagnetic interference environment, traditional acoustic magnetic EAS system has some shortcomes, such as short detection distance, high rate of false alarm and miss alarm. In order to solve these problems, an acoustic magnetic EAS system based on support vector machine (SVM) is proposed. The algorithm is implemented on FPGA chip. The fast Fourier transform (FFT) method is used to extract the frequency characteristics of tag and noise signals, which are used as the training samples of SVM algorithm. SVM algorithm classifies data frames into labeled and unlabeled ones, and the training part is implemented in MATLAB. The classification calculation part is implemented in FPGA, which adopts three-level parallel computing structure, and the algorithm time is less than 0.5 ms. The test results showed that: Under the interference environment, the longest detection distance of hard tag can reach 1.45 m, and the recognition rate can reach 99.4%. The longest detection distance of soft tag can reach 0.75 m, and the recognition rate can reach 98.9%. Compared with the traditional acoustic magnetic EAS system, this system can significantly increase the detection distance, improve the recognition rate, and provide a solution for the stable operation of EAS system in complex environment.

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Last Update: 2021-06-24