Development and application of a portable near infrared spectroscopy analyzer

A portable near infrared spectroscopy analyzer is developed for fieldwork analysis applications.Compared with other analyzers,the analyzer has many advantages,such as compact space,simple structure,fast time response,low power waste,anti-shake and low maintenance cost.Its features and configuration are described.The performance tests reveal the analyzer performs well.Furthermore,the analyzer has been successfully applied to non-damage measurement of apple sugar content on fieldwork.The low root mean square errors of calibration(RMSEC) and prediction(RMSEP) are given of 0.266 and 0.309 respectively.The results demonstrate that the analyzer is excellent in modeling and can deal with complex environment.