Application of LIF Technology-Based Spectral Feature Extraction in Oil Detection

Zhikun Chen; Rui Guo; Pengfei Cheng

doi:10.3788/LOP57.133002

Laser & Optoelectronics Progress, Volume. 57, Issue 13, 133002(2020)

Application of LIF Technology-Based Spectral Feature Extraction in Oil Detection

Zhikun Chen^**, Rui Guo^*, and Pengfei Cheng^***

Author Affiliations

College of Electrical Engineering, North China University of Science and Technology, Tangshan, Hebei 063210, China

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Figures & Tables(8)

Fig. 1. Experimental system structure

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Fig. 2. Fluorescence spectra of 0^# diesel. (a) Contour plot; (b) excitation spectrum; (c) emission spectrum

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Fig. 3. Fluorescence spectra of 95^# gasoline. (a) Contour plot; (b) excitation spectrum; (c) emission spectrum

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Fig. 4. Fluorescence spectra of kerosene. (a) Contour plot; (b) excitation spectrum; (c) emission spectrum

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Fig. 5. Cluster analysis tree of sensitive feature values

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Fig. 6. Fitting curves of three oils between mass concentration and relative fluorescence intensity

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Table 1. Characteristic parameters of fluorescence spectra

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Table 1. Characteristic parameters of fluorescence spectra

Sample No.	Standarddeviation	Centerdistance	Kurtosiscoefficient
1	4.3512	0.1374	3.5932
2	5.8319	0.2294	3.7956
3	6.1134	0.2219	3.6099
4	5.2552	0.2033	3.8401
5	5.8961	0.1946	3.9123
6	3.8364	0.3472	1.4372
7	3.8235	0.4138	1.5961
8	2.8896	0.3274	1.7832
9	4.1812	0.2945	1.8155
10	3.6519	0.2129	1.6694
11	1.9623	0.2367	2.1922
12	2.2256	0.1851	2.4096
13	1.7825	0.2711	2.3629
14	2.4728	0.2362	2.2162
15	2.5641	0.1153	2.7013
16	2.1752	0.2381	2.2591
17	3.3793	0.3254	1.6511
18	2.5837	0.2289	2.5912
19	4.0214	0.1942	3.8561
20	5.8516	0.2374	3.6937

Table 2. Mass concentration of unknown oil
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Table 2. Mass concentration of unknown oil
SampleNo. Typeof oil Massconcentration /(mg·L^-1) True massconcentration /(mg·L^-1)
16 Kerosene 74 75
17 Gasoline 9 10
18 Kerosene 85 85
19 Diesel 6 5
20 Diesel 68 65

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Zhikun Chen, Rui Guo, Pengfei Cheng. Application of LIF Technology-Based Spectral Feature Extraction in Oil Detection[J]. Laser & Optoelectronics Progress, 2020, 57(13): 133002

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