Visual guidance system and visual guidance method

Abstract

The invention provides a visual guidance system and a visual guidance method. According to one embodiment, the visual guidance system is used for guiding the robot to take and put materials from and on the AGV trolley stopped in the stop area near the robot. The visual guidance system comprises a visual unit and a programmable logic controller PLC. The visual unit is used for capturing and processing the image of the stop area so as to generate the image processing result. The PLC is coupled with the visual unit in a communication way. The PLC is used for receiving the image processing resultfrom the visual unit and responding to the image processing result indicating the position deviation of the actual stop position of the AGV trolley relative to the standard stop position to be greaterthan the position deviation threshold to indicate the robot to adjust the material taking and putting position based on the position deviation before taking and putting the materials from and on theAGV trolley, wherein the standard stop position is the stop position of the AGV trolley without positioning deviation.

Description

technical field [0001] The present invention generally relates to the field of manufacturing, and more particularly to the field of intelligent manufacturing. Background technique [0002] With the development of intelligent manufacturing, higher and higher requirements are put forward for control precision. [0003] figure 1 A typical smart manufacturing scenario is shown in , where an automatic guided vehicle (Automatic Guided Vehicle, AGV vehicle) 150 is used to transport materials to and from multiple operating stations. The AGV trolley can be automatically positioned to a designated position near the robot 110 on the operating platform, and then the robot 110 grabs materials from the AGV trolley 150 or places materials on the AGV trolley 150 . The automatic positioning of the AGV trolley 150 has been able to achieve a certain accuracy (for example, the positioning deviation can be controlled at the centimeter level). However, in actual use, the positioning deviation ...

AI Technical Summary

Problems solved by technology

However, in actual use, the AGV trolley 150 still has a situation where the positioning deviation is greater than its inherent maximum allowable positioning deviation

In addition, in some high-precision manufacturing scenarios, the inherent positioning accuracy of the AGV trolley 150 is still not high enough, which limits its application to higher-precision smart manufacturing

[0004] Therefore, need a kind of technology that can monitor the positioning accuracy of AGV dolly and further make up for the inherent insufficient positioning accuracy of AGV dolly in this area

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