Robotic Lawnmower Boundary Mapping Without Perimeter Wires
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Solution Overview
Problem
Existing lawnmowers face challenges in accurately establishing working area boundaries due to manual remote control methods, which result in imprecise boundaries and costly wire arrangement methods that are cumbersome to operate.
Innovation Solution
A method for establishing a boundary of a working area using a lawnmower that involves acquiring a first boundary, expanding it outward by a preset distance, and using sensors to determine non-working areas, allowing the lawnmower to adjust its path to avoid obstacles and establish a precise boundary without wire arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual remote control method is used to establish boundary, then operation is simple, but boundary precision is low
Solution Approach 1:
The patent replaces manual remote control (mechanical operation) with an automatic boundary establishment system using sensors and processors. The lawnmower automatically moves along the boundary, detects environmental features, and establishes precise boundaries without manual intervention, thereby improving boundary precision while maintaining operational simplicity through automation.
Solution Approach 2:
The lawnmower performs boundary establishment autonomously using its own sensors and processing units. The system self-navigates along the boundary, self-detects environmental features, and self-establishes the working area boundary without external control, enabling both high precision and ease of operation.
2Measurement precision
If wire arrangement method is used to establish boundary, then boundary precision is high, but device complexity and operation difficulty increase
Solution Approach 1:
The patent extracts and eliminates the wire arrangement component from the boundary establishment system. Instead of using physical wires to mark boundaries, the system uses sensors to detect environmental features and automatically establishes boundaries through software processing, thereby maintaining high precision while removing the complexity of wire installation and management.
Solution Approach 2:
The patent replaces the mechanical wire arrangement system with an electronic sensor-based system. The sensors detect boundary features and the processor establishes the working area digitally, eliminating the need for physical wires and their associated installation and maintenance complexity while preserving boundary precision.
3Device complexity
If manual remote control method is used, then device complexity is low, but productivity is reduced due to imprecise boundaries
Solution Approach 1:
The lawnmower autonomously performs boundary establishment using integrated sensors and processing units, eliminating the need for complex external equipment while achieving precise boundaries. This self-service capability improves mowing efficiency by ensuring complete coverage without missing areas or requiring re-mowing, while keeping the system relatively simple through integrated components.
Data Source
AI summary
A method for establishing a boundary of a working area of a lawnmower, a method for mowing and a lawnmower are provided. The method acquires a first to-be-processed boundary of a working area, and expands the first to-be-processed boundary outward by a preset distance as a second to-be-processed boundary; control the lawnmower to move along the second to-be-processed boundary, acquire environmental information of the lawnmower within the second to-be-processed boundary with a sensor of the lawnmower, to determine a boundary of a non-working area in the environmental information; control the lawnmower to move along the boundary of the non-working area to acquire a third to-be-processed boundary; and establish the boundary of the working area of the lawnmower based on the second and the third to-be-processed boundaries. The established boundary of the working area is accurate, and there is no need to lay out wires, so the cost is low.