A yield mapping system for hand-harvested fruits based on RFID and GPS location technologies: field testing |
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| Authors: | Y G Ampatzidis S G Vougioukas D D Bochtis C A Tsatsarelis |
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| Institution: | (1) Department of Agricultural Engineering, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece |
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| Abstract: | It is proposed that radio frequency identification (RFID) technology be used to overcome the limitations of existing yield
mapping systems for manual fresh fruit harvesting. Two methods are proposed for matching bins—containing harvested fruits—with
corresponding pairs of trees. In the first method, a long-range RFID reader and a DGPS are mounted on an orchard tractor and
passive low-cost RFID tags are attached to the bins. In the second method, the DGPS is not used and RFID tags are attached
to individual trees as well as bins. An experimental evaluation of the accuracy and reliability of both methods was performed
in an orchard. The first method failed in half of the trials because the tree canopies interfered with the GPS signal. The
RFID reader miss ratio for the detection of the bins was 0.32% for both methods. However, the attachment of RFID tags on suitable
tree branches (to achieve 100% detection), in the second method, is not a well-defined procedure; some trial is demanded to
determine the best positions and orientations of the tree tags in order for the RFID reader to successfully detect them. The
first method seems more promising if robust tractor location under foliage can be achieved. |
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| Keywords: | Yield mapping RFID technology Hand-harvested fruits Traceability Labelling |
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