Semiautomatic mobile lawn mower controlled by a GPS system
Keywords:
รถตัดหญ้า, กึ่งอัตโนมัติ, ระบบจีพีเอสAbstract
This study aimed to design and develop a semi-automatic mobile lawn mower controlled by a Global Positioning System (GPS). The prototype employs two direct current (DC) motors for locomotion and one DC motor for grass cutting, powered by a lithium battery as the primary energy source. The experimental phase consisted of two parts: (1) determining the accuracy of approaching designated reference points, and (2) evaluating mowing time efficiency in a 100 m² lawn. Five reference points were set for the positioning experiment, with ten trials conducted. Results indicated that the average closest approach to the designated points was 1.63 meters. For the mowing time evaluation, the GPS-controlled semi-automatic mower was compared to a manually operated mower. The manual mower achieved an average mowing time of 24.46 minutes, whereas the semi-automatic mower required 39.03 minutes. This corresponds to the GPS-controlled mower being slower by 14.57 minutes, with an overall efficiency of 75.01% relative to the manual mower.
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