Robot Auto-Charging Navigation Using Deflection Angle Positioning

Solution Overview

Problem

Existing robot charging systems waste time and increase power consumption due to random searching for a charging station, especially when obstacles are present near the boundary line.

Innovation Solution

An automatic charging method and system that calculates a deflection angle and direction using latitude and longitude coordinates to guide the robot directly to the charging station, incorporating GPS positioning, camera identification, and charging cable detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the robot walks along the boundary line to search for the charging station, then the robot can find the charging station, but the charging time is increased and power consumption is increased

Engineering Contradiction:

Improvecharging station finding capabilityVSAvoidcharging time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The robot records the position coordinates of the charging station in advance during the boundary wire laying process. When charging is needed, the robot directly navigates to the recorded coordinates using coordinate difference calculation and deflection angle determination, eliminating the need to search along the boundary line again.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical boundary-following search method with a coordinate-based navigation system. By calculating the deflection angle from current position to charging station coordinates and using camera identification to verify arrival, the system substitutes random boundary searching with direct geometric navigation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If the robot walks along the boundary line to search for the charging station, then the robot can find the charging station, but the power consumption is increased

Engineering Contradiction:

Improvecharging station finding capabilityVSAvoidrobot power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The robot records the position coordinates of the charging station in advance during the boundary wire laying process. When charging is needed, the robot directly navigates to the recorded coordinates using coordinate difference calculation and deflection angle determination, eliminating the need to search along the boundary line again.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical boundary-following search method with a coordinate-based navigation system. By calculating the deflection angle from current position to charging station coordinates and using camera identification to verify arrival, the system substitutes random boundary searching with direct geometric navigation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the robot randomly searches for the boundary line when obstacles are present, then the robot can eventually find the charging station, but time is wasted

Engineering Contradiction:

Improvecharging station finding capabilityVSAvoidsearch time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical boundary-following search method with a coordinate-based navigation system. By calculating the deflection angle from current position to charging station coordinates and using camera identification to verify arrival, the system substitutes random boundary searching with direct geometric navigation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces camera identification as an intermediary verification mechanism. The camera captures images of the charging station, and image processing confirms arrival at the target coordinates, providing reliable feedback without requiring boundary line contact or random searching.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4235336B1Method and system for robot automatic charging, robot, and storage medium

Publication Date: 2025.12.03 SUZHOU CLEVA PRECISION MACHINERY & TECH CO LTD

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AI summary

The present invention provides anautomatic charging method and system for a robot,a robot, and a storage medium. The method comprises: S1, recording coordinates of a position A of a charging station; S2, when the robot receives a charging instruction, recording coordinates of a current position B of the robot; S3, after driving the robot to walk a preset distance straight with the coordinates of the position B as a starting point, recording coordinates of a current position C of the robot; S4, calculating a deflection angle and deflection direction of the robot relative to the charging station according to the coordinates of the position A, the position B and the position C; and S5, driving the robot to search for and arrive at the charging station according to the deflection angle and deflection direction. The automatic charging method and system for a robot, a robot, and a storage medium provided in the present invention have the advantages that a charging path can be planned in real time through the positions of the charging station and the robot, so as to save the charging time and improve the use performance of the robot.