รหัสดีโอไอ 10.14456/tsaej.2021.11
Creator Parewa Vijitthanasarn
Title Development of Soil Surface Moisture Measurement and Mapping Innovation from SMAP Satellites
Contributor Natharinee Aieorattanaweedee, Anuphao Aobpaet
Publisher Thai Socities of Agricultural Engineering Journal
Publication Year 2021
Journal Title Thai Socities of Agricultural Engineering Journal
Journal Vol. 27
Journal No. 2
Page no. 27-36
URL Website www.tci-thaijo.org /index.php/TSAEJ
ISSN 1685-408X
Abstract Fertilizer sprayer with image processing technique mounted on unmanned tractor was conducted to investigate 2 main purposes: the fertilizer spray application and the unmanned tractor travelling. For the fertilizer spray application, the sugarcane shrub size was determined in order to vary liquid fertilizer rate. Higher rate applied for a small shrub and lower rate for a large healthy shrub. The prototype of variable rate fertilizer sprayer with image processing technique was developed for study the altitudes of image processing system at 0.6m, 0.8m and 1.0m and the altitudes of fertilizer sprayer system at 0.3m, 0.5m and 0.7m which effect the fertilizer sprayer efficiency. The results shown that the altitudes of image processing system at 0.6m and the fertilizer sprayer system height at 0.3m were the best combination for the sprayer system to distribute liquid fertilizer. For the unmanned tractor travelling, the prototype was focused on direction controller and working performance. The direction travelling controlled was considered at linear and curve trajectory path. At travelling speed 1 m s-1, the direction travelling was controlled in both x and y directions with maximum error during operation at 0.62 m and 0.005 m at the end point. The result showed that working performance 15.17 kN of drawbar force, 85.30% of field efficiency and 3.57 Rai hr-1 of tractor field capacity and 3.99 liter hr-1 of fuel consumption.
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บรรณานุกรม

Parewa Vijitthanasarn และ Natharinee Aieorattanaweedee;Anuphao Aobpaet. (2021) Development of Soil Surface Moisture Measurement and Mapping Innovation from SMAP Satellites. Thai Socities of Agricultural Engineering Journal, 27(2), 27-36.
Parewa Vijitthanasarn และ Natharinee Aieorattanaweedee;Anuphao Aobpaet. "Development of Soil Surface Moisture Measurement and Mapping Innovation from SMAP Satellites". Thai Socities of Agricultural Engineering Journal 27 (2021):27-36.
Parewa Vijitthanasarn และ Natharinee Aieorattanaweedee;Anuphao Aobpaet. Development of Soil Surface Moisture Measurement and Mapping Innovation from SMAP Satellites. Thai Socities of Agricultural Engineering Journal:ม.ป.ท. 2021.