Design of Portable LED-based NIR Integrity Wheat Component Intelligent Measuring Apparatus

Quickly and non-damage to measure the nutrition component of wheat is very important in the field of wheat's purchase and production. The hardware design, software design, model builds and concentration prediction of integrity wheat component intelligent measuring apparatus are introduced. The apparatus adopt the long light path transmission method, is made up of NIR LED light source, narrow bandwidth interference filter, Si photoelectric detector, A/D conversion, microprocessor system and calibration model. For predict the protein concentration of integrity wheat, the correlation coefficient is 0.93 and the coefficient of variation is 5.54%. The measuring apparatus providing a lower cost solution for integrity wheat component non-damage quickly measuring, and also provides quickly speed and smaller size for using on fieldwork. Compared with other instrument, the apparatus has many advantages, such as compact space, simple structure, low power waste, and anti-shake.