| 摘要 |
<p>PURPOSE:To measure the quality of a vegitable or fruit such as saccharinity and hardness with excellent accuracy nondestructivitly by photodetecting reflected light from the vegitable or fruit to be inspected and measuring reflection intensity corresponding to >=3 kinds of different wavelength included in the near infrared-ray range. CONSTITUTION:The vegitable or fruit 3 to be inspected is irradiated with light from a light source 1 such as an infrared-ray lamp and its reflected light is photodetected by a photodetection device 4 through a spectroscope 2 and converted into an electric signal. The electric signal from the photodetection device 4 is sent to a microprocessor 9 to measure the reflection intensity of specific wavelength and the reflection factor of the wavelength is calculated to evaluate the quality according to a specific evaluation model expression. Then the reflected light from the vegitable or fruit 3 is included in the near infrared-rays range of <=3.0mum. The reflection intensity corresponding to at least three kinds of wavelengths among ranges of 0.90-1.10, 1.11-1.31, 1.24-1.44, 1.35-1.55, 1.58-1.78, and 1.72-1.92mum is measured.</p> |
