Abstract：In order to detect the trench oil the authors built a trench oil rapid detection system based on laser induced fluorescence detection technology. This system used 355 nm laser as excitation light source. The authors collected the fluorescence spectrum of a variety of edible oil and fried cooking oil (a kind of trench oil) and then set up a fluorescence spectrum database by taking advantage of the trench oil detection system. It was found that the fluorescence characteristics of fried cooking oil and common edible oil were obviously different. Then it could easily realize the oil recognition and trench oil rapid detection by using principal component analysis and BP neural network, and the overall recognition rate could reach as high as 97.5%. Experiments showed that laser induced fluorescence spectrum technology was fast, non-contact, and highly sensitive. Combined with BP neural network, it would become a new technique to detect the trench oil.
[1] ZHOU Zhi-hui, CHEN Zhi-hua, MAO Fei-jun, et al(周智慧，陈志华，毛飞君，等). Chian Oils and Fats(中国油脂), 2011, 36(10)：64. [2] LIAN Fei-yu, QIN Jian-ping, NIU Bo, et al(廉飞宇，秦建平，牛 波，等). Agricultural Engineering(农业工程), 2012, 2(6)：37. [3] ZHOU Yong-sheng, LUO Shi-ping, KONG Yong(周永生，罗士平，孔 泳). Chinese Journal of Chromatography(色谱), 2012, 30(2)：207. [4] JIA Yan-hua, XU Xiao-xuan, YANG Ren-jie, et al(贾艳华，徐晓轩，杨仁杰，等). Acta Photonica Sinica(光子学报), 2006, 35(11): 4. [5] Wiesent B R, Dorigo D G, Julich F, et al. Optoelectronics and Advanced Materials-Rapid Communicauions, 2011, 5(11): 1162. [6] Parvin P, Shoursheini S Z, Khalilinejad F, et al. Optics and Lasers in Engineering, 2012, 50(11): 1672. [7] Rocha R, Villaverde A B, Silveira L, et al. Photomedicine and Laser Surgery, 2008, 26(4): 329. [8] Luthria D L, Mukhopadhyay S, Robbi ns R J, et al. Journal of Agricultural and Food Chemistry, 2008, 56(14): 5457. [9] Howley T, Madden M G, O’Connell M L, et al. Knowledge-Based Systems, 2006, 19(5): 363. [10] Zhang H, Hu H, Zhang X B, et al. Acta Physiologiae Plantarum, 2011, 33(6): 2461. [11] Rossi A M, Taylor C W. Nature Protocols, 2011, 6(3)：365. [12] Rughooputh H C S, Rughooputh S D D V. Image and Vision Computing, 2000, 18(14): 1101. [13] CHEN Guo-zhen, HUANG Xian-zhi, XU Jin-gou, et al(陈国珍, 黄贤智, 许金钩, 等). Fluorescence Analytical Method(荧光分析法). Beijing: Science Press(北京: 科学出版社), 1990. 451.
