Vehicle-Mounted Trimmer Control for Obstacle-Following Edging
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Solution Overview
Problem
Existing lawn maintenance equipment with trimmers and edgers lacks efficient autonomous or semi-autonomous control for trimming and edging around obstacles, requiring manual operation and limited precision in maintaining contact with obstacles.
Innovation Solution
A trimmer system mounted on a lawn maintenance apparatus with a trimmer arm and base that allows for autonomous control, using GPS and rangefinding to position and maintain contact with obstacles, and adjustable stand-offs for varying terrain, enabling automatic trimming and edging configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual operation is used for trimming and edging around obstacles, then the system is simpler to control, but precision in maintaining contact with obstacles deteriorates
Solution Approach 1:
The trimmer system autonomously positions itself relative to obstacles using sensors and control algorithms, eliminating the need for continuous manual adjustment. The system detects obstacle boundaries and automatically maintains optimal trimming contact, allowing the equipment to serve itself in the positioning task.
Solution Approach 2:
Manual mechanical control is replaced with electronic sensing and automated control systems. Sensors detect obstacle positions and distances, while control algorithms process this information to automatically adjust the trimmer arm positioning, substituting human operator actions with electronic-mechanical systems.
2Stability of the object's composition
If autonomous control is implemented for trimming around obstacles, then path consistency improves, but device complexity increases
Solution Approach 1:
The autonomous control system continuously monitors the trimmer's position relative to the obstacle path using sensors, compares this information with the desired path, and automatically adjusts positioning in real-time. This closed-loop feedback mechanism ensures consistent path following while maintaining adaptability to varying terrain and obstacle configurations.
Solution Approach 2:
The system pre-maps obstacle locations and trimming paths before execution, allowing the autonomous control algorithm to plan and follow consistent paths in advance. This preliminary positioning and path planning ensures repeatable, consistent trimming paths across multiple operations.
3Adaptability or versatility
If adjustable stand-offs are used for varying terrain, then adaptability to different terrains improves, but device complexity increases
Solution Approach 1:
The stand-off adjustment mechanism allows dynamic modification of the trimmer's height and positioning relative to the ground surface. This dynamic adjustability enables the system to adapt to varying terrain conditions such as slopes, uneven ground, and different obstacle heights, maintaining effective trimming contact across diverse environments.
Solution Approach 2:
The adjustable stand-off system provides multi-functionality by enabling the same trimmer unit to operate effectively across various terrain types and obstacle configurations. A single mechanism serves multiple purposes: height adjustment, terrain compensation, and obstacle clearance management, enhancing overall system versatility.
Data Source
AI summary
Vehicle-mounted line trimmers and/or edgers for weed and vegetation, along with methods of operation of such trimmers, are discussed. The trimmer/edger can have a variety of features such as maintaining and/or adjusting the height of the trimmer/edger and maintaining the same orientation of the trimmer/edger at a variety of heights. The methods of operation can include methods for recording a path for the trimmer/edger and/or following a pre-recorded path for the trimmer/edger, trimming/edging around small obstacles, and trimming/edging along large obstacles.