Motor Scythe Border Mapping for Autonomous Lawn Robot Navigation
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Solution Overview
Problem
Existing green area maintenance systems lack improved functionalities and effective methods for sensing and maintaining delimiting borders, particularly in autonomous and user-independent operations.
Innovation Solution
A green area maintenance system equipped with a motor scythe, scythe position determining device, and position recording device for determining and recording border coordinates, along with an autonomous mobile robot for self-controlled maintenance, utilizing satellite and local positioning systems for accurate border sensing and navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple border sensing devices are used to sense the delimiting border, then the accuracy and reliability of border detection is improved, but the device complexity and cost increase
Solution Approach 1:
The motor scythe is designed to serve dual functions: it acts as both a cutting tool for green area maintenance and as a border sensing device. By integrating a scythe position determining device that records position coordinates during operation, the system eliminates the need for separate dedicated border sensing devices, thereby reducing device complexity while maintaining border detection capability
Solution Approach 2:
The system uses the motor scythe's own position determining device to sense and record the delimiting border during its normal cutting operation. The scythe essentially senses the border itself while performing its primary function, without requiring additional specialized sensing equipment, thus simplifying the overall system
2Productivity
If an autonomous mobile green area maintenance robot is used, then the productivity and efficiency are improved, but the device complexity increases
Solution Approach 1:
The motor scythe is designed as a multi-functional device that combines cutting capabilities with autonomous navigation and border sensing functions. By integrating the position determining device and control unit into the scythe itself, the system achieves automation without requiring a completely separate complex robotic platform
Solution Approach 2:
The position recording device acts as an intermediary that captures position coordinates from the scythe position determining device and stores them for later use by the control unit. This intermediary component enables autonomous operation by providing the necessary positional data without requiring complex real-time processing systems
3Measurement precision
If the motor scythe is guided along the delimiting border to sense the border, then the border sensing accuracy is improved, but the time required for border detection increases
Solution Approach 1:
The system performs border sensing during the initial phase of area maintenance operation. By recording position coordinates as the motor scythe is first guided along the delimiting border, the system captures accurate border data while the area is being maintained, combining two operations into one time frame rather than requiring separate dedicated border mapping trips
Solution Approach 2:
The motor scythe continuously performs useful cutting work while simultaneously sensing the border. The position recording occurs continuously during the cutting operation, ensuring that border detection does not interrupt or extend beyond the necessary maintenance time, thus eliminating wasted time
Data Source
AI summary
A green area maintenance system includes a motor scythe, a scythe position determining device for determining scythe position coordinates, and a position recording device. The scythe position determining device is attached to the motor scythe. The position recording device is designed for recording a series of scythe position coordinates of a delimiting border while the motor scythe is being guided together with the scythe position determining device along the delimiting border of an area to be maintained.