Autonomous Mower Positioning Without a Base Station
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Solution Overview
Problem
Conventional automatic mowers require a base station for precise positioning, which increases installation complexity and costs, and may not function effectively in areas with poor satellite signal quality or obstacles.
Innovation Solution
A method for autonomous moving devices to acquire and process positioning signals without a base station by using reference positioning signals from satellites, error evaluation, and signal compensation techniques to determine accurate position information, even in areas with weak signals or obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a base station is used for precise positioning, then positioning precision is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent extracts the base station component from the positioning system, enabling the moving object to achieve precise positioning using only satellite signals and onboard processing. The differential correction functionality that previously required a separate base station is now performed autonomously by the moving object through error data calculation between current and reference positioning signals.
Solution Approach 2:
The moving object serves its own positioning needs by autonomously calculating error data from satellite signals without requiring external base station infrastructure. The system performs self-positioning by processing positioning signals and computing correction values independently, eliminating dependency on external supporting infrastructure.
2Reliability
If a base station is deployed, then positioning reliability is improved, but ease of operation deteriorates due to installation requirements
Solution Approach 1:
The base station infrastructure is removed from the system, transforming positioning from a infrastructure-dependent process to a standalone onboard function. The moving object now acquires positioning signals directly from satellites and performs all necessary calculations independently, eliminating installation and deployment requirements entirely.
Solution Approach 2:
Instead of having a stationary base station provide correction data to moving objects, the patent inverts the approach by having each moving object independently calculate its own correction data from satellite signals. This reversal eliminates the need for base station deployment while maintaining positioning reliability.
3Measurement precision
If conventional positioning is used in areas with obstacles, then positioning function is maintained, but positioning precision deteriorates due to poor satellite signal quality
Solution Approach 1:
The patent implements feedback by continuously calculating error data between current positioning signals and reference positioning signals. This error data serves as feedback that is used to correct positioning deviations, allowing the system to maintain precision even when satellite signal quality deteriorates due to obstacles by constantly adjusting based on calculated errors.
Solution Approach 2:
The system performs preliminary positioning using reference positioning signals acquired before the current positioning signal. By having pre-acquired reference data available, the system can immediately calculate error corrections when current signals are affected by obstacles, maintaining positioning precision without waiting for signal recovery.
Data Source
AI summary
A method for positioning an autonomous moving device includes steps of: acquiring a current positioning signal of an autonomous moving device during a moving process, and a reference positioning signal of the autonomous moving device before the current positioning signal; resolving the reference positioning signal and the current positioning signal to acquire error data; and processing the error data and position information of the reference positioning signal to acquire current position information of the autonomous moving device.