AGV Position Alignment Using Pattern Codes for Stable Lifting
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Solution Overview
Problem
Automated guided vehicles (AGVs) face inefficiencies in transporting large quantities of articles, leading to unbalanced loads, damage, and reduced customer satisfaction due to the need for precise positioning and alignment of articles along pre-planned guide paths.
Innovation Solution
An article transportation method that involves controlling an AGV to move to the bottom of a target article, determining an offset distance between the AGV and the article using pattern codes scanned by a camera, and adjusting the AGV's position to align centrally with the article, thereby preventing unbalanced loads and ensuring stable transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the AGV moves along a pre-planned guide path on the ground, then the transportation route is fixed and simple to implement, but the AGV cannot accurately align with the central position of the target article, causing unbalanced loads and potential damage
Solution Approach 1:
The system performs preliminary positioning actions by scanning the pattern code on the target article before the AGV makes final positioning adjustments. The camera captures the pattern code position in advance, allowing the system to calculate the offset distance and plan the circumferential movement path beforehand, ensuring accurate central alignment when the AGV reaches the target position
Solution Approach 2:
The AGV transitions from static guide path following to dynamic position adjustment. After reaching the bottom of the target article via the pre-planned guide path, the AGV performs dynamic circumferential movement around its own axis to align its central position with the target article's central position, adapting to the actual position of the target rather than following a fixed path
2Reliability
If the AGV does not perform position adjustment, then the transportation process is simple and fast, but the load becomes unbalanced causing scratches and falls that reduce reliability
Solution Approach 1:
The system replaces complex mechanical positioning mechanisms with a combination of optical detection (camera scanning pattern codes) and computational control. The camera captures the pattern code position, the system calculates the offset distance, and controls the AGV to perform circumferential movement, substituting mechanical alignment complexity with optical-mechanical integration that is both reliable and efficient
Solution Approach 2:
The AGV system performs self-positioning by using its own camera to scan the pattern code on the target article, automatically calculating the offset distance, and controlling its own circumferential movement to achieve central alignment. This self-service positioning mechanism eliminates the need for external positioning assistance while ensuring transportation reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enhances the stability and safety of article transportation by preventing scratches and falls, improving customer satisfaction by ensuring precise alignment and reducing damage during transport.
Implementation Method 1
scanning a pattern code of the target article through a camera, the pattern code of the target article disposed at the critical position of the target article, the camera disposed at the critical position of the AGV
Data Source
AI summary
An article transportation method, comprising: controlling an automated guided vehicle (AGV) to move to a bottom of a target article, the target article being an article to be moved; determining an offset distance between a critical position of the AGV and a critical position of the target article; controlling the AGV to perform position adjustment according to the offset distance until a central position of the AGV corresponds to a central position of the target article; and controlling the AGV to lift the target article at a current position and move the target article. A terminal and a computer-readable storage medium are further provided.