Stereo Camera Positioning for Automated Transport Stop Alignment
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Solution Overview
Problem
Current automated transportation systems face challenges in achieving high-precision positioning of automated transportation devices and objects, which is critical for accurate post-processing tasks, such as machining or conveyance, due to limitations in detection accuracy.
Innovation Solution
The system employs a stereo camera to capture images of identification codes and stop position confirmation markers on automated transportation devices, allowing for the acquisition of three-dimensional stop position information, enabling precise positioning and alignment without the need for additional sensors, and enabling the transfer of objects to post-process equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional single-camera or marker-based positioning is used, then the system structure remains simple, but the positioning accuracy is insufficient for high-precision post-processing tasks
Solution Approach 1:
The patent transitions from two-dimensional image capture to three-dimensional position detection by introducing a stereo camera system. The stereo camera captures images from multiple viewpoints simultaneously, enabling the calculation of three-dimensional coordinates through triangulation. This dimensional enhancement directly resolves the positioning accuracy issue while maintaining reasonable system complexity
Solution Approach 2:
The patent introduces a confirmation marker as an intermediary object attached to the automated transportation device. This marker serves as a reference target for the stereo camera to detect the device's position and orientation. The marker acts as a mediator between the transportation device and the detection system, enabling precise positioning without requiring complex sensors on the device itself
2Measurement precision
If additional sensors are added to achieve high-precision positioning, then positioning accuracy improves, but the device complexity and cost increase
Solution Approach 1:
The confirmation marker serves as an external intermediary that carries the positioning information. Instead of equipping the automated transportation device with complex sensors, the system attaches a simple marker to the device and uses a stationary stereo camera to detect it. This approach achieves high-precision positioning while keeping both the device and camera systems relatively simple
Solution Approach 2:
The automated transportation device itself carries the confirmation marker, making it self-identifiable to the detection system. The device's own structure is utilized to mount the marker, and the device's position is detected through the marker rather than requiring active sensors on the device. This self-service approach reduces the sensing burden on the moving device
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 approach enhances the accuracy of automated transportation device positioning and object alignment, facilitating efficient and accurate post-processing tasks by providing high-precision three-dimensional coordinates, thereby improving the overall system's operational reliability and reducing the risk of errors.
Implementation Method 1
a stereo camera configured to obtain an image of the identification code and the stop position confirmation marker, wherein the stereo camera is arranged at a predetermined stop position of the automated transportation device
Data Source
AI summary
An automated transportation system comprises: an automated transportation device configured to transport an object to be conveyed, a stereo camera configured to obtain an image of the identification code and the stop position confirmation marker, and an information processing device configured to obtain a three-dimensional stop position information of the automated transportation device and the identification information from the taken image. The automated transportation device includes an identification code and a stop position confirmation marker attached to the automated transportation device. The identification code indicates an identification information to identify at least either one of the object to be conveyed and the automated transportation device. The stereo camera is arranged at a predetermined stop position of the automated transportation device. The information processing device transmits the three-dimensional stop position information to a post-process equipment when the identification information is compatible with a predetermined condition.