Human-machine co-fusion manufacturing unit safety risk assessment method based on digital twin system

Abstract

The invention discloses a human-machine co-fusion manufacturing unit safety risk assessment method based on a digital twinning system, which combines technologies of computer vision, human body posture image recognition and prediction, digital twinning and the like, acquires real-time images of a robot and an operator in a human-machine co-fusion manufacturing unit, constructs the digital twinning system by using the Plant Simulation, and utilizes a 3D-PFNet human body posture prediction algorithm to judge human body motion intention and key point coordinates, human body three-dimensional coordinate data and real-time and next-moment joint position coordinates are detected based on a Blaze Pose human body posture recognition algorithm, coordinates of the robot and the operator are unified, coordinate calculation is performed by adopting an SSM improvement method, and the safety risk assessment quantized value of the man-machine co-fusion manufacturing unit is obtained. On the basis of ensuring the dynamic real-time performance, the method is more tightly combined with an actual collaborative manufacturing environment, and the benign development of the safety production of a man-machine co-fusion manufacturing unit is promoted.

Description

technical field [0001] The invention belongs to the technical field of human-machine integration, and in particular relates to a safety risk assessment method for a human-machine integration manufacturing unit based on a digital twin system. Background technique [0002] With the development of the Made in China 2025 plan, the upgrade of the manufacturing industry to the direction of digitalization, networking, and intelligence is the only way for development. The human-machine fusion manufacturing unit has developed from the initial human-environment cooperation with robots, and robots replacing humans to do single repetitive tasks, to the direction in which robots cooperate with human-environment, and robots have multi-dimensional perception capabilities and flexible collaboration capabilities. Under the premise of rapid mode transformation and development, safety risk is the primary problem that must be faced in actual production. [0003] However, at present, the safety...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the passive response of robots in the existing cohesive manufacturing environment that cannot meet the needs of human-machine cohesion manufacturing units for dynamic response and intuitive analysis, and propose a safety risk assessment method for human-machine cohesion manufacturing units

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