RESEARCH OF WATER DETECTION INSTRUMENT BASED ON SHORT-WAVELENGTH NEAR INFRARED SPECTROSCOPY FOR LIVING LEAVES
In short-wavelength near infrared range, design a leaf water measuring instrument which can realize non-destruction and in situ measurement. The system was developed on the basis of Lambert-Beers law and double-wavelength spectroscopy. The measuring instrument centered with single-chip microcomputer MSP430 was an integrated intelligent system, which can independently accomplish data acquisition, processing, saving, communication and display. The instrument consisted of acquiring module, microprocessor system, software supporting and calibration model. The optical signals were collected by TSL230, a new type of sensor detector, which could convert the incident light into frequency in direct proportion. Choose the light-to-frequency chip simplify the circuit greatly and minimize external disturbance. Experiments were performed on Chinese redbud leaves. The related coefficient of the predicted value and standard value in prediction set was near 0.9. The experiment result indicated this system was feasible to detect leaf water of Chinese redbud non-destruction and fast. The low consumption characteristic was given full consideration in the period of hardware design and software programming. Compared with other apparatus, small volume, light weight, simple structure, low power consumption and anti-interference were the remarkable advantages.
Near infrared spectroscopy technology Leaves Water Detection
Rui Hou Haiyan Ji Zhenhong Rao Binghui Shen
College of Information and Electrical Engineering,China Agricultural University,Beijing100083,China College of Information and Electrical Engineering,China Agricultural University,Beijing 100083,China College of Science,China Agricultural University,Beijing 100083,China
国际会议
北京
英文
1-7
2009-10-14（万方平台首次上网日期，不代表论文的发表时间）