Method for diagnosing fruit diseases based on visible and near-infrared spectral characteristic band

[0021] As shown in Figure 1, a fruit water core disease diagnosis system based on the characteristic bands of visible and near-infrared spectra includes a portable system with embedded single-chip microcomputers with several photosensitive sensors and LED lights. The system uses the single-chip microcomputer as the embedded structure of the microcontroller, and uses the signal conditioning circuit to filter and amplify the output signal of the sensor, so that the signal meets the input requirements of the A / D converter. The A / D converter in the system realizes The conversion of analog signal to digital signal is used by single-chip microcomputer, the keyboard in the system realizes the input of external commands, controls the operation of the instrument, and the LCD display outputs the diagnosis result of water core disease.

[0022] The probe of the instrument is used to irradiate the surface of the fruit, and the photosensitive sensor in the probe can collect in real time th