Recognition of filled walnuts and empty walnuts using acoustic signal processing

Authors

  • smail Khalifahamzehghasem Department of Electrical Engineering, Boukan Branch, Islamic Azad University, Boukan, Iran
  • Mohammad Hassan Komarizadeh Department of Mechanical Engineering of Agricultural Machinery, Urmia University, Urmia, Iran
  • Mohammad Askari Department of Mechanical Engineering of Agricultural Machinery, Urmia University, Urmia, Iran.

DOI:

https://doi.org/10.25165/ijabe.v5i3.628

Keywords:

walnut recognition system, fuzzy inference system, acoustic emission, decision tree, signal processing

Abstract

An intelligent walnut recognition system combining acoustic emissions analysis, decision tree and fuzzy inference system (FIS) was developed and tested. In data acquisition part, Fast Fourier Transform (FFT) of impact signals was measured. Feature was extracted in two ways: using time domain and FFT of impact signal. The 66% of samples were used for training and the remains were used for testing. In selection feature part, the most important feature selected was: average and the second frequency amplitude of FFT. The method is based on the feature generation by FFT and time domain, produce decision tree with J48 algorithm and classification by fuzzy rules. The output of J48 algorithm was employed to produce the crisp if-then rule and membership function (MF) sets. The structure of FIS classifier was then defined based on the crisp sets. The results showed that the total classification accuracy was 94.7%, and the proposed FFT-J48-FIS model can be used in separation of filled walnuts from empty walnuts. Keywords: walnut recognition system, fuzzy inference system, acoustic emission, decision tree, signal processing DOI: 10.3965/j.ijabe.20120503.005 Citation: Khalifahamzehghasem S, Hassan Komarizadeh M, Askari M. Recognition of filled walnuts and empty walnuts using acoustic signal processing. Int J Agric & Biol Eng, 2012; 5(3): 44

Author Biographies

smail Khalifahamzehghasem, Department of Electrical Engineering, Boukan Branch, Islamic Azad University, Boukan, Iran

Tel: 00984826231537

Mohammad Hassan Komarizadeh, Department of Mechanical Engineering of Agricultural Machinery, Urmia University, Urmia, Iran

Tel: 00989144485177

Mohammad Askari, Department of Mechanical Engineering of Agricultural Machinery, Urmia University, Urmia, Iran.

Tel: 00989359915284

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How to Cite

Khalifahamzehghasem, smail, Komarizadeh, M. H., & Askari, M. (2012). Recognition of filled walnuts and empty walnuts using acoustic signal processing. International Journal of Agricultural and Biological Engineering, 5(3), 44–49. https://doi.org/10.25165/ijabe.v5i3.628

Issue

Vol. 5 No. 3 (2012): IJABE

Section

Information Technology, Sensors and Control Systems

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