上海农业学报2017，Vol.33Issue(2)：125-130,6.DOI:10.15955/j.issn1000-3924.2017.02.23
基于声振法的西瓜内部糖度检测研究
Detection of sugar content in watermelon based on the method of sound vibration
摘要
Abstract
The research was conducted by knocking on watermelon for its' vibration test with self-designed vibration test system.Through different incentive-receive combinations,it found that when the melon pedicle was measurement point and the melon terrier was excitation point,the internal correlation of acoustic characteristics and sugar content was higher,and when the acoustic characteristics was the second formant frequency,the three fitting model of sugar content was 0.877.Stepwise multiple linear regression analysis was adopted to establish the watermelon sugar content testing model,regression model was B =20.371-0.038f2 + 0.035 Vf1-0.006f4,the R2of this model was 0.881.By calibrating validation,sample's average forecasting error was 7.48％,detection model correction RMSEC root mean square error and the root mean square prediction error RMSEP was 0.663and 0.796 respectively.The establishment of the model provides a theoretical reference for the on-line nondestructive testing of watermelons' sugar content.关键词
声振法/西瓜/糖度/逐步多元线性回归Key words
Sound vibration method/Watermelon/Sugar content/Stepwise multiple linear regression分类
农业科技引用本文复制引用
汪迪松,浦宏杰,李臻峰,陆勇..基于声振法的西瓜内部糖度检测研究[J].上海农业学报,2017,33(2):125-130,6.基金项目
国家自然科学基金(515082290) （515082290）
江苏省产学研联合创新资金(BY2014023-32) （BY2014023-32）
江苏省食品先进制造装备技术重点实验室开放课题(FM-201406) （FM-201406）
