Development of a portable spectroscopy-based device to detect nutrient status of apple tree

Yao Zhang; Lihua Zheng; Minzan Li; Xiaolei Deng; Xiaofei An

doi:10.1117/12.977403

9 November 2012 Development of a portable spectroscopy-based device to detect nutrient status of apple tree

Yao Zhang, Lihua Zheng, Minzan Li, Xiaolei Deng, Xiaofei An

Proceedings Volume 8527, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques and Applications IV; 852716 (2012) https://doi.org/10.1117/12.977403
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

Abstract

In order to detect apple tree growth status fast and accurately, four sensitive wavebands (364nm, 652nm, 766nm, 810nm) were obtained by analyzing the correlation between the apple leaves spectra and their nitrogen contents plus adopting the segment reduced precise sampling methods. A rapid determination model of apple leaf nitrogen content suitable for portable detector was built. Then a portable spectroscopy-based device was developed. It consists of an optical unit and a control unit. The optical channel was consisted of convex lens, optical filter, photoelectric detector and airtight mechanical exine. The optical unit was used to capture, transit, transform and submit the optical signal. The controller was consisted of operation, input, display, data storage and power control unit adopting JN5139 as main control unit. Controller was the coordinator in building the wireless network. And it was also responsible for receiving the measured data from sensor, calculating vegetation index, and displaying and storing the calculated results. The experiments showed that the correlation coefficient between the measured nitrogen content and the predicted nitrogen content reached to 0.857. It illustrated that the apple tree nitrogen detector was practical and could be used to detect leaf nitrogen content in apple orchard.

Citation Download Citation

Yao Zhang, Lihua Zheng, Minzan Li, Xiaolei Deng, and Xiaofei An "Development of a portable spectroscopy-based device to detect nutrient status of apple tree", Proc. SPIE 8527, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques and Applications IV, 852716 (9 November 2012); https://doi.org/10.1117/12.977403

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Nitrogen

Sensors

Reflectivity

Calibration

Near infrared

Visible radiation

Spectroscopes

Show All Keywords

Keywords/Phrases

Search In:

Publication Years