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Proceedings Paper

Tomato seeds maturity detection system based on chlorophyll fluorescence
Author(s): Cuiling Li; Xiu Wang; Zhijun Meng
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Paper Abstract

Chlorophyll fluorescence intensity can be used as seed maturity and quality evaluation indicator. Chlorophyll fluorescence intensity of seed coats is tested to judge the level of chlorophyll content in seeds, and further to judge the maturity and quality of seeds. This research developed a detection system of tomato seeds maturity based on chlorophyll fluorescence spectrum technology, the system included an excitation light source unit, a fluorescent signal acquisition unit and a data processing unit. The excitation light source unit consisted of two high power LEDs, two radiators and two constant current power supplies, and it was designed to excite chlorophyll fluorescence of tomato seeds. The fluorescent signal acquisition unit was made up of a fluorescence spectrometer, an optical fiber, an optical fiber scaffolds and a narrowband filter. The data processing unit mainly included a computer. Tomato fruits of green ripe stage, discoloration stage, firm ripe stage and full ripe stage were harvested, and their seeds were collected directly. In this research, the developed tomato seeds maturity testing system was used to collect fluorescence spectrums of tomato seeds of different maturities. Principal component analysis (PCA) method was utilized to reduce the dimension of spectral data and extract principal components, and PCA was combined with linear discriminant analysis (LDA) to establish discriminant model of tomato seeds maturity, the discriminant accuracy was greater than 90%. Research results show that using chlorophyll fluorescence spectrum technology is feasible for seeds maturity detection, and the developed tomato seeds maturity testing system has high detection accuracy.

Paper Details

Date Published: 31 October 2016
PDF: 7 pages
Proc. SPIE 10021, Optical Design and Testing VII, 1002125 (31 October 2016); doi: 10.1117/12.2247866
Show Author Affiliations
Cuiling Li, Beijing Research Ctr. of Intelligent Equipment for Agriculture (China)
National Research Ctr. of Intelligent Equipment for Agriculture (China)
Xiu Wang, Beijing Research Ctr. of Intelligent Equipment for Agriculture (China)
National Research Ctr. of Intelligent Equipment for Agriculture (China)
Zhijun Meng, Beijing Research Ctr. of Intelligent Equipment for Agriculture (China)
National Research Ctr. of Intelligent Equipment for Agriculture (China)


Published in SPIE Proceedings Vol. 10021:
Optical Design and Testing VII
Yongtian Wang; Tina E. Kidger; Kimio Tatsuno, Editor(s)

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