摘要
该文目的是通过静态和在线两种方式的对比试验,研究苹果可溶性固形物近红外光谱静态和在线检测的差异。分别在静态(600～950nm)和在线(600.02～950.92nm)2种检测方式下,采用间隔偏最小二乘法,寻找苹果可溶性固形物的特征波段,建立了苹果可溶性固形物近红外光谱检测用数学模型,并进行对比分析。试验结果为:与静态检测模型相比,在线检测模型性能稍弱,模型预测相关系数为0.78,预测均方根误差为1.04oBirx。试验结果表明:近红外光谱在线检测苹果可溶性固形物的精度不理想。
Difference of soluble solids content(SSC)of apples was compared with static detection of near-infrared spectroscopy and online detection of near-infrared spectroscopy.The characteristic wavelength bands of SSC were searched by interval partial least square(iPLS)regression in the wavelength range of 600-950 nm(static)and 600.02-950.92 nm(online).The models of SSC were developed in static and online measurement mode.The online model was inferior to the static model with correlation coefficient of 0.78 and root mean square error of prediction(RMSEP)of 1.04oBirx.The results show that it is inferior to statically determine SSC for online determination SSC of apples by NIRS technique.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第S2期340-344,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金(60844007)
国家科技支撑计划(2008BAD96B04
2006BAD11A12-07)
江西省青年基金(2008GQN0029
2007GZN0266)教育部新世纪优秀人才资助计划资助(NCET-06-0575)
江西省青年科学家培养计划(2007-130)
关键词
近红外光谱
无损检测
在线系统
偏最小二乘法
可溶性固形物
苹果
near-infrared spectroscopy,nondestructive testing,partial least square method,soluble solids content,online,apple
