实验科学与技术2024，Vol.22Issue(3)：29-32,38,5.DOI:10.12179/1672-4550.20230281
水果品质的多光谱检测方法与系统研究
Study on Multispectral Detection Method and System for Fruit Quality
摘要
Abstract
In order to obtain the multispectral image of the non-destructive test sample,a method of obtaining the multispectral image by using the liquid crystal tunable filter(LCTF)is studied.LCTF has the functions of light modulation,deflection and filtering.The cascade of multi-stage Lyot wave plates can be electronically tuned in a wide spectral band.By changing the applied voltage,the dynamic modulation of the filter can be realized to obtain high-precision narrow-band spectral output.Compared with the traditional multi-spectral image obtaine by using the multi-spectral spectrometer,LCTF has the advantages of simple control,low modulation voltage,fast continuous modulation and so on.In this paper,the voltage phase delay characteristics of a group of wave plates are measured by the quarter-wave retarder method,and the appropriate wave plates are selected to form a triple filter to realize the narrow-band filtering of the broadband spectrum.A multispectral imaging system is obtained by this method to realize non-destructive testing for fruit quality.关键词
液晶可调谐滤光片/多光谱成像/相位延迟量测量/水果品质Key words
liquid crystal tunable filter/multi-spectral imaging/phase delay measuring/fruit quality分类
物理学引用本文复制引用
郑一鸣,魏扬,李琨,陈晓西..水果品质的多光谱检测方法与系统研究[J].实验科学与技术,2024,22(3):29-32,38,5.基金项目
四川省科技计划应用基础研究项目(2020YJ0327). （2020YJ0327）
