Cleaning Robot Multi-Stage Recharging for Accurate Docking
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Solution Overview
Problem
Conventional cleaning robot recharging systems often fail due to inaccurate docking between the robot and the charging base, leading to incomplete battery charging.
Innovation Solution
A method and system that involve determining the direction of the charging base, moving towards it, detecting the distance, rotating for a predetermined angle, and adjusting position to ensure accurate docking, using a combination of sensors and guidance signals to facilitate reliable battery charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cleaning robot uses a simple guidance signal to move toward the charging base, then the operation is simple, but the docking accuracy is poor
Solution Approach 1:
The recharging process is divided into multiple stages: initial approach using guidance signals, mid-range positioning using distance detection, and final docking using combined sensor feedback. This segmentation allows each stage to use the most appropriate method for its specific requirements, achieving both operational simplicity and docking accuracy.
Solution Approach 2:
The system implements multi-stage feedback mechanisms: the guidance signal provides directional feedback for initial approach, distance sensors provide positional feedback for mid-range adjustment, and proximity sensors provide fine-positioning feedback for final docking. This layered feedback system ensures accurate docking while maintaining simple overall operation.
2Productivity
If the cleaning robot moves directly to the charging base without intermediate steps, then the recharging process is fast, but the docking accuracy is poor
Solution Approach 1:
The robot performs preliminary actions in sequence: first approaches the charging base using guidance signals to establish rough positioning, then uses distance detection to determine when to transition to the next stage, and finally executes precise docking maneuvers. These preliminary positioning actions enable the final docking to be both fast and accurate.
Solution Approach 2:
The system dynamically adjusts its approach strategy based on real-time conditions. The robot transitions from guidance-signal-based navigation to distance-based positioning to proximity-based docking, with each stage optimized for its specific distance range. This dynamic adaptation maintains high speed while ensuring accurate docking at each phase.
3Manufacturing precision
If the cleaning robot uses multiple sensors and complex control steps for accurate docking, then the docking accuracy is improved, but the device complexity increases
Solution Approach 1:
The complex docking process is segmented into distinct functional modules: guidance signal reception for directional control, distance detection for positional awareness, and proximity sensing for fine adjustment. Each module operates independently with clearly defined responsibilities, making the overall complex system manageable and maintainable while achieving high docking accuracy.
Solution Approach 2:
The system uses multi-functional sensors that serve multiple purposes: the same distance sensor used for approach control also provides feedback for speed adjustment, and the proximity sensors used for final positioning also detect docking completion. This multi-functionality reduces the total number of components needed while maintaining high docking accuracy.
Data Source
AI summary
A recharging method for a cleaning robot is provided. The recharging method includes: determining a direction of a charging base; controlling the cleaning robot to move in a first direction toward the direction of the charging base; detecting, in real time, a distance between the cleaning robot and the charging base; determining whether the cleaning robot has arrived at a target location based on the distance, the target location being at a second distance in front of the charging base; controlling the cleaning robot to rotate for a predetermined angle when the cleaning robot arrives at the target location; controlling the cleaning robot to move backwardly to approach the charging base and to touch the charging base; controlling the cleaning robot to move forwardly for a first distance, and then to move backwardly to approach the charging base and to dock with the charging base to perform battery charging.