Dry goods: machine vision technology guided by robot positioning

With the increasing demand for automation in industrial production, vision technology has been widely introduced into the industrial robot industry, and visual industrial robots can achieve positioning, gripping, and alignment assembly faster, more accurately, and more flexibly. The main function of vision technology based on image analysis in robot guidance related applications is to accurately acquire the coordinate position and angle of the object (object to be grasped) and the object (object to be assembled), and convert the image coordinates into identifiable by the robot. Robot coordinates, guiding the robot to correct and assemble. Therefore, hand-eye calibration and positioning guidance are the core of machine vision application in robot guidance.
Hand-eye calibration principle
Principle: The so-called hand-eye calibration, together with the coordinate system of the hand (manipulator) and the eye (camera), solves the coordinate conversion relationship between the camera and the robot, allowing the robot to accurately capture the target of the camera.


From one coordinate system XOY to another coordinate system X'O'Y', it can be seen that XOY is translated, rotated, and scaled equivalent to another coordinate system X'O'Y'.


The conversion relationship is as follows:


The above matrix accurately describes the relationship between two coordinate systems, where fx, fy are the scaling scales of the X and Y directions, respectively, a, b are the translational quantities of the X and Y directions, respectively, and θ is the rotation angle of the coordinate system. .
Hand eye calibration process
To solve the calibration conversion formula, only the corresponding points of three or more coordinate systems are needed. Therefore, in the visual application, the N-point calibration algorithm is generally used to realize the hand-eye calibration.

Positioning guidance
In applications where machine vision and robotics are combined, robotic guided positioning is most common. In such a scenario, it can be roughly divided into a single camera grab positioning guide, a single camera correcting guide, and a top and bottom camera fit positioning guide.

The above picture shows the scene of single camera positioning guidance. The camera can be mounted on the robot or fixed on the machine. The incoming material is photographed by the camera, and is positioned so that the robot can pick up the incoming material according to the positioning information, thereby reducing the accuracy requirement for the transfer mechanism between the stations and ensuring the consistency of the gripping position.

Roll Container

Roll Container is a device for transporting and storing goods, made of hard metal materials and characterized by foldable and movable features. Usually used in supermarkets, warehouses, logistics centers, manufacturing and other places to effectively organize and manage goods. Roll containers can be used for the transportation of goods because they can easily load and unload goods, and they have an open design. In addition, they usually have foldable characteristics, making them easy to stack and store when not in use, thereby saving space and storage costs. Roll containers can also be used for the storage of goods. They can serve as temporary storage devices to safely store goods in warehouses or logistics centers, and because of their sturdy structure and secure locking system, they can effectively protect goods from damage. In addition, Roll Containers can also be used to classify and organize goods. They are usually equipped with adjustable shelves and partitions, which can separate and organize the height of goods as needed to better organize and manage the goods. This function makes it easier to find and retrieve goods, improving work efficiency. In addition, Roll Container can also be used for displaying goods in supermarkets, retail stores, and exhibition halls.
In short, Roll Container is a practical equipment for transporting and storing goods. Their foldable and movable characteristics have demonstrated important applications in the transportation, storage, classification, and display of goods. By using Roll Container, the efficiency and security of cargo management can be improved, thereby saving time and costs for enterprises.

Roll Container,Logistic Trolley,Cage Roll Containers Trolley,Acrylic Slatwall Shelves

Suzhou Aomeijia Metalic Products Co,Ltd. , https://www.amjshelf.com