Robotic Mower Position Sensing for Precise Boundary Wire Tracking
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Solution Overview
Problem
Conventional signal detection devices for robotic mowers rely on image acquisition and processing to determine the location of the mower, which is insufficient for accurately identifying the working area boundaries.
Innovation Solution
A positioning sensing mechanism with multiple sensitive axes on the robotic mower, utilizing positioning signals along these axes to determine the mower's location on a wire that defines its working range, combined with a signal detection device and a robotic mowing system that includes a charging station and wire for energy supply and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If image acquisition and processing are used to detect boundary, then boundary detection capability is improved, but location determination precision deteriorates
Solution Approach 1:
The patent introduces a wire as an intermediary carrier that transmits positioning signals between the charging station and the robotic mower. The wire serves as a physical medium that enables precise location determination through signal transmission, resolving the contradiction by providing a dedicated communication channel that is more accurate than image-based methods.
Solution Approach 2:
The patent replaces the optical/image-based detection system with an electromagnetic signal transmission system through the wire. This substitution enables precise location determination by using electrical signals carried through the wire, which provides more accurate positioning information compared to image processing methods.
2Reliability
If image processing is used to determine working area, then boundary identification is improved, but location accuracy on wire deteriorates
Solution Approach 1:
The wire acts as an intermediary that carries positioning signals from the charging station to the robotic mower. By using the wire as a signal transmission medium, the system can accurately determine the mower's location along the wire, complementing the boundary identification capability with precise location data.
Solution Approach 2:
The system implements feedback by continuously transmitting positioning signals through the wire and using sensing assemblies to detect the mower's position. This feedback mechanism enables real-time location tracking and accurate determination of the mower's position relative to the wire, improving location accuracy.
Data Source
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AI summary
The embodiments of the present application relate to the field of self-propelled devices. Disclosed are a sensing mechanism, a measurement apparatus, a robotic mower, a system and a positioning method. A positioning sensing mechanism is arranged on a robotic mower. The positioning sensing mechanism comprises: a first positioning sensing assembly, the first positioning sensing assembly having a first sensitive axis; and a second positioning sensing assembly, the second positioning sensing assembly having a second sensitive axis. On the basis of a positioning signal in the direction of the first sensitive axis and/or a positioning signal in the direction of the second sensitive axis, the position of the robotic mower on a guiding line can be determined, thereby achieving effective positioning for the robotic mower in an operation area.