Spectral Detector Design for Nitrogen and Moisture of Rape

Abstract:

For the four spectral bands of rape canopy leaf which is sensitive to nitrogen and moisture contents, a reflection spectral detector was designed to measure nitrogen and moisture of rape, constituted by the adjustable light, filter module, passive detection array, signal conditioning and acquisition modules. Further, a test was carried on to verify performance by several different reflectivity of the plates and four levels of nitrogen and moisture rape. The result shows that correlation coefficient between the contents of nitrogen, moisture and output of detector was 0.78, relative error of the detector was 9.5%, accuracy of sample classification was 65%.

• Periodical: Key Engineering Materials (Volume 464)
• Pages: 241-244
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.464.241
• Online since: January 2011
• Authors: Zhi Yong Xiang, Bo Quan Li, Han Ping Mao, Xiao Dong Zhang
• Keywords: Moisture, Nitrogen, Rape, Spectral Detector, Spectral Reflectivity

References

[1] Zhang Xiaodong, Mao Hanping: Journal of CSAM Vol. 40(2009), No. 4, pp.161-165.

[2] Min Min, Won Suk Lee: Journal of Computers and Electronics in Agriculture (2008), No. 63, p.215～226.

[3] Di Cui, Li Minzan: Journal of Computers and Electronics in Agriculture, No. 69, p.171～176(2009).

[4] Sripada, John: Evaluating Multiple Indices form a Canopy Reflectance Sensor to Estimate Corn N Requirements, Journal of Remote Sensing, Vol. 100(2008), No. 6, p.1553～1561.

DOI: 10.2134/agronj2008.0017

[5] Feng Lei, Fang Hui: Journal of Spectroscopy and Spectral Analysis Vol. 26(2006), No. 9, p.1749～1752.

[6] Li Minzan: Spectral Anlysis Technology and Application (BeiJing Scientific Publications, China 2006).