Share Email Print
cover

Proceedings Paper

Development of a wireless crop growth monitor based on optical principle
Author(s): Xihua Li; Minzan Li; Di Cui
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In order to detect the plant's nitrogen content in real-time, a wireless crop growth monitor is developed. It is made up of a sensor and a controller. The sensor consists of an optical part and a circuit part. The optical part is made up of 4 optical channels and 4 photo-detectors. 2 channels receive the sunlight and the other 2 receive the reflected light from the crop canopy. The intensity of sunlight and the reflected light is measured at the wavebands of 610 nm and 1220 nm respectively. The circuit part is made up of power supply unit, 4 amplifiers and a wireless module. The controller has functions such as keyboard input, LCD display, data storage, data upload and so on. Both hardware and software are introduced in this report. Calibration tests show that the optical part has a high accuracy and the wireless transmission also has a good performance.

Paper Details

Date Published: 2 February 2009
PDF: 10 pages
Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 715708 (2 February 2009); doi: 10.1117/12.811850
Show Author Affiliations
Xihua Li, China Agricultural Univ. (China)
Minzan Li, China Agricultural Univ. (China)
Di Cui, China Agricultural Univ. (China)


Published in SPIE Proceedings Vol. 7157:
2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
Anbo Wang; YanBiao Liao; AiGuo Song; Yukihiro Ishii; Xudong Fan, Editor(s)

© SPIE. Terms of Use
Back to Top