DOI QR코드

DOI QR Code

Design of Pattern Classifier for Electrical and Electronic Waste Plastic Devices Using LIBS Spectrometer

LIBS 분광기를 이용한 폐소형가전 플라스틱 패턴 분류기의 설계

  • Park, Sang-Beom (Department of Electrical Engineering, The University of Suwon) ;
  • Bae, Jong-Soo (Department of Electrical Engineering, The University of Suwon) ;
  • Oh, Sung-Kwun (Department of Electrical Engineering, The University of Suwon) ;
  • Kim, Hyun-Ki (Department of Electrical Engineering, The University of Suwon)
  • Received : 2016.11.21
  • Accepted : 2016.12.19
  • Published : 2016.12.25

Abstract

Small industrial appliances such as fan, audio, electric rice cooker mostly consist of ABS, PP, PS materials. In colored plastics, it is possible to classify by near infrared(NIR) spectroscopy, while in black plastics, it is very difficult to classify black plastic because of the characteristic of black material that absorbs the light. So the RBFNNs pattern classifier is introduced for sorting electrical and electronic waste plastics through LIBS(Laser Induced Breakdown Spectroscopy) spectrometer. At the preprocessing part, PCA(Principle Component Analysis), as a kind of dimension reduction algorithms, is used to improve processing speed as well as to extract the effective data characteristics. In the condition part, FCM(Fuzzy C-Means) clustering is exploited. In the conclusion part, the coefficients of linear function of being polynomial type are used as connection weights. PSO and 5-fold cross validation are used to improve the reliability of performance as well as to enhance classification rate. The performance of the proposed classifier is described based on both optimization and no optimization.

선풍기, 오디오, 전기밥솥 등의 소형 산업가전제품들은 대부분 ABS, PP, PS 등의 재질로 이루어져 있다. 색깔이 있는 플라스틱은 근적외선(NIR) 분광기에 의해 분류가 가능하지만, 반면에 검은색 플라스틱은 빛을 흡수하는 특성으로 인해 분류하기가 어렵다. 그래서 본 연구에서는 LIBS(Laser Induced Breakdown Spectroscopy) 분광기를 통해 폐소형가전 플라스틱을 선별하는 RBFNNs(Radial Basis Function Neural Networks) 패턴 분류기를 소개한다. 전처리부분에는 차원축소 알고리즘 중 하나인 PCA(Principal Component Analysis)를 사용해 처리 속도를 향상시킬 뿐만 아니라 효과적인 데이터의 특성을 추출한다. 조건부에는 FCM(Fuzzy C-Means) 클러스터링을 사용한다. 결론부에는 다항식의 형태 중 하나인 1차 선형식을 연결가중치로서 사용한다. PSO와 5-fold cross validation은 성능의 신뢰도를 향상시키고, 분류율을 높이는데 사용된다. 제안된 분류기의 성능은 최적화한 것과 최적화하지 않은 것 두 가지의 관점에서 보여준다.

Keywords

References

  1. C. Velis, "Global recycling markets - plastic waste: A story for one player", Globalisation and Waste Management Task Force, ISWA, Vienna, 2014.
  2. Resource Recirculation Technology Research Center, "Resource Recirculation Technology of Domestic and foreign and Trend of Research", UDOKWON Landfill site Management Corp., Incheon, South Korea, 2015.
  3. X. Wang, H. Wang, C. Chen, and Z. Jia, "Ablation Properties and Elemental Analysis of Silicone Rubber Using Laser-Induced Breakdown Spectroscopy", IEEE Transactions on Plasma Science, Vol. 44, No. 11, pp. 2766-2771, 2016. https://doi.org/10.1109/TPS.2016.2586185
  4. A. F. M. Y. Haider, S. Sengupta, K. M. Abedin, "A quick method to determine the impurity content in gold ornaments by LIBS technique", International Conference on Photonics, Optics and Laser Technology, Vol. 1, pp. 33-40, 2015 .
  5. V. Sathiesh Kumar, Nilesh J, Vasa, R. Sarathi, D. Nakamura, T. Okada, "Understanding the dis charge activity across GFRP material due to salt deposit under transient voltages by adopting OES and LIBS technique", IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 21, No. 5, pp. 2283-2292, 2014. https://doi.org/10.1109/TDEI.2014.004120
  6. F. C. DeLucia, A. C. Samuels, R. S. Harmon, R. A. Walters, K. L. McNesby, A. LaPointe, R. J. Winkel, A. W. Miziolek, "Laser-induced breakdown spectroscopy (LIBS): a promising versatile chemical sensor technology for hazardous material detection", IEEE Sensors Journal, Vol. 5, No. 4, pp. 681-689, 2005. https://doi.org/10.1109/JSEN.2005.848151
  7. B. Y. Kim, S. K. Oh, and J. Y. Kim, "Design of Digit Recognition System Realized with the Aid of Fuzzy RBFNNs and Incremental-PCA", Journal of Korean Institute of Intelligent Systems, Vol. 26, No. 1, pp. 056-063, 2016. https://doi.org/10.5391/JKIIS.2016.26.1.056
  8. C. J. Park, S. K. Oh, J. Y. Kim, "A Study On Three-dimensional Optimized Face Recognition Model : Comparative Studies and Analysis of Model Architectures", The Transactions of the Korean Institute of Electrical Engineers, Vol. 64, No. 6, pp. 900-911, 2015. https://doi.org/10.5370/KIEE.2015.64.6.900
  9. C. J. Park, S. H. Kim, S. K. Oh, J. Y. Kim, "Design of RBFNNs Pattern Classifier Realized with the Aid of Face Features Detection", Journal of Korean Institute of Intelligent Systems, Vol. 26, No. 2, pp. 120-126, 2016. https://doi.org/10.5391/JKIIS.2016.26.2.120
  10. J. S. Bae, S. K. Oh and H. K. Kim, "Design of Automatic Classification System of Black Plastics Based on Support Vector Machine Using Raman Spectroscopy", Journal of Korean Institute of Intelligent Systems, Vol. 26, No. 5, pp. 416-422, 2016. https://doi.org/10.5391/JKIIS.2016.26.5.416
  11. H. M. Kim, S. K. Oh and Y. H. Lee, "Design of Heavy Rain Advisory Decision Model Based on Optimized RBFNNs Using KLAPS Reanalysis Data", Journal of Korean Institute of Intelligent Systems, Vol. 23, No. 5, pp. 473-478, 2013. https://doi.org/10.5391/JKIIS.2013.23.5.473
  12. W. Y. Choi, S. K Oh, "Design of Meteorological Radar Pattern Classifier Using Clustering-based RBFNNs : Comparative Studies and Analysis", Journal of Korean Institute of Intelligent Systems, Vol. 24, No. 5, pp. 536-541, 2014. https://doi.org/10.5391/JKIIS.2014.24.5.536