Paper Info
Title
Exact Laser Beam Positioning For Measurement Of Vegetation Vitality
Abstract
Purpose - The purpose of this paper is to present a novel application for a newly developed Technical Vision System (TVS), which uses a laser scanner and dynamic triangulation, to determine the vitality of agriculture vegetation. This vision system, installed on an unmanned aerial vehicle, shall measure the reflected laser energy and thereby determine the normalized differenced vegetation index.Design/methodology/approach - The newly developed TVS shall be installed on the front part of the unmanned aerial vehicle, to perform line-by-line scan in the vision system field-of-view. The TVS uses high-quality DC motors, instead of previously researched low-quality DC motors, to eliminate the existence of two mutually exclusive conditions, for exact positioning of a DC motor shaft. The use of high-quality DC motors reduces the positioning error after control.Findings - Present paper emphasizes the exact laser beam positioning in the field-of-view of a TVS. By use of high-quality instead of low-quality DC motors, a significant reduced positioning time was achieved, maintaining the relative angular position error less than 1 per cent. Best results were achieved, by realizing a quasi-continuous control, using a high pulse-width modulated duty cycle resolution and a high execution frequency of the positioning algorithm.Originality/value - The originality of present paper is represented by the novel application of the newly developed TVS in the field of agriculture. The vitality of vegetation shall be determined by measuring the reflected laser energy of a scanned agriculture zone. The paper's main focus is on the exact laser beam positioning within the TVS field-of-view, using high-quality DC motors in closed-loop position control configuration.
Year
DOI
Venue
2017
10.1108/IR-11-2016-0297
INDUSTRIAL ROBOT-THE INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH AND APPLICATION
Keywords
Field
DocType
Agriculture, Machine vision, Unmanned aerial vehicles (UAV), Dynamic triangulation, Laser scanning
Angular displacement,Normalization (statistics),Laser scanning,Machine vision,Simulation,Duty cycle,Laser,DC motor,Triangulation (social science),Engineering
Journal
Volume
Issue
ISSN
44
4
0143-991X
Citations 
PageRank 
References 
0
0.34
7
Authors
10
Name
Order
Citations
PageRank
Lindner, L.1158.50
Oleg Sergiyenko25522.62
Moises Rivas-Lopez3258.74
Daniel Hernandez-Balbuena42210.95
Wendy Flores-Fuentes52711.47
Julio C. Rodríguez-Quiñonez63613.67
fabian n murrietarico786.26
Mykhailo Ivanov800.68
Vera Tyrsa93211.89
luis c basacapreciado1012.06