Firmness measurement of kiwifruit using a self-designed device based on acoustic vibration technology
Postharvest Biology and Technology（2022）
摘要
•A device for real-time firmness measurement was designed.•Time-course changes in different firmness indices during storage period were analyzed.•The frequency-domain signals were applied to extract useful statistical features.•Effective frequencies highly correlated with firmness were selected by CARS.•High-precision detection of firmness was realized by CARS-PLS models.
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关键词
Kiwifruit firmness,Acoustic vibration technology,Frequency-domain spectra,Statistical feature,Online real-time detection,PLS regression
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