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The purpose of this study is to research the existing JDJ - 1000 type in-situ test analysis system for increasing grain protein grain quality near infrared detection. Based on the analysis of near infrared detection technology and equipment at home and abroad, on the basis of grain protein near infrared detector is developed, by the near infrared light emitting unit, signal sensing detection unit, microcomputer data processing analysis unit, working software, etc. Near infrared light emitting unit USES near infrared light emitting diode annular array distribution, signal detection sensor in the central plan. Hardware circuit USES modular design. System software includes PC software and software, the software of singlechip processor finish near infrared spectrum signal detection, conversion, and to send, PC to complete the near infrared spectrum of digital signal calibration, analysis and test results shows that the output. The instrument has simple structure, small volume, convenient operation, no moving parts, etc. Experiments show that this instrument can meet the needs of grain protein detection, can be applied to food quality in the process of harvesting, processing and storage.
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