Boundary Map Control for Robotic Mower Edge Position Accuracy
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Solution Overview
Problem
Existing lawn mowers struggle to accurately generate map data indicating the boundary between working and non-working areas, leading to poor position accuracy due to reliance on position information from edge mowing operations that are not always precise.
Innovation Solution
A control device equipped with an operating state acquisition part, judgment part, position information acquisition part, and storage control part that determines the operating state and position of the machine based on load detection, movement direction, and direction detection, allowing for accurate generation and correction of map data indicating the boundary between working and non-working areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If position information from edge mowing operations is used to generate map data, then map data can be created without high costs, but position accuracy of the map data deteriorates because the lawn mower is not always at the boundary
Solution Approach 1:
The system uses feedback from multiple sensors (load detection, movement direction, direction detection) to continuously monitor and verify the operating state, enabling accurate determination of boundary positions and improving map data precision while maintaining cost-effectiveness
Solution Approach 2:
The patent replaces reliance on simple position information from GNSS with a multi-sensor detection system that uses load detection, movement direction analysis, and direction detection to mechanically and physically verify boundary conditions, thereby improving measurement precision
2Device complexity
If the working part is used for both cutting operations and position detection, then device complexity is reduced, but measurement precision deteriorates because the working part may be away from the boundary during non-operating states
Solution Approach 1:
The working part serves dual functions: it performs cutting operations and simultaneously provides position detection data. The system uses the working part's own operational characteristics (load, movement direction) as detection signals, eliminating the need for separate detection devices while maintaining accurate boundary position identification through intelligent analysis of operational states
Data Source
AI summary
A control device capable of improving the position accuracy of map data is disclosed. The control device is configured to acquire information which is output from a working machine which includes a working part and works along a boundary between a working area and a non-working area. The control device includes an operating state acquisition part configured to acquire information indicating an operating state of a machine body of the working machine; a judgment part configured to determine the operating state of the machine body, based on information acquired by the operating state acquisition part; a position information acquisition part configured to acquire position information indicating a position of the machine body; and a storage control part configured to store the position information acquired by the position information acquisition part in the storage, based on a determination result of the judgment part.