Pickup Robot Vision Positioning for Accurate Slot Retrieval
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Solution Overview
Problem
The conventional robot-based pickup systems in logistics suffer from high failure rates due to defects in positioning, leading to reduced efficiency in picking up goods from warehouses.
Innovation Solution
A pickup robot equipped with a camera, processor, and pickup component that captures images, filters slot and goods identifiers, and determines position information to accurately identify and retrieve items from their storage slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual pickup is replaced by robot pickup to improve efficiency, then productivity increases, but positioning accuracy deteriorates leading to high failure rates
Solution Approach 1:
The patent introduces an image capture device as an intermediary between the robot and the goods. The device captures images of slot identifiers and goods identifiers, which are then processed to determine precise positioning information. This intermediary optical system bridges the gap between automated robot operation and accurate positioning requirements.
Solution Approach 2:
The patent replaces traditional mechanical positioning systems with an optical recognition system. Instead of relying on mechanical sensors or pre-programmed coordinates, the system uses image capture devices to visually identify slot and goods identifiers, substituting mechanical positioning with optical field-based positioning that achieves higher precision.
2Measurement precision
If image capture device is added to improve positioning accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The image capture device serves multiple functions: capturing slot identifier images for positioning, capturing goods identifier images for verification, and providing visual feedback for pickup operation status. By making the image capture device multi-functional, the patent reduces the need for separate specialized devices, thereby limiting the increase in system complexity while maintaining high positioning accuracy.
Solution Approach 2:
The system creates digital copies (images) of the slot identifiers and goods identifiers, which are then processed to extract positioning information. This copying approach allows the robot to accurately locate items without requiring direct mechanical contact or complex physical measurement systems, achieving high precision with relatively simple hardware.
3Reliability
If image processing is used to identify slot and goods identifiers, then reliability of pickup operation improves, but loss of time in image processing occurs
Solution Approach 1:
The system performs preliminary actions by capturing images of slot identifiers and goods identifiers in advance before the actual pickup operation. The image processing and identifier recognition are completed beforehand, so that when the robot reaches the target position, the positioning information is already available, minimizing delays during the critical pickup moment.
Solution Approach 2:
The image capture and processing operations are integrated into the continuous motion of the robot. Instead of stopping to capture images and process them separately, the system continuously captures images during robot movement and processes them in real-time, ensuring that the useful action of identifying targets continues without interruption throughout the pickup process.
Data Source
AI summary
A pickup method includes: obtaining a target image captured when a pickup component moves to each slot where a commodity is stored; when it is determined, on the basis of the slot identifier in the target image, that the current slot is a target slot which stores a commodity to be picked, screening a commodity identifier from the target image; when the commodity identifier is obtained by means of screening, determining, on the basis of the commodity identifier, the position information of the commodity to be picked up in the target slot; and picking up, on the basis of the position information, the commodity from the target slot.