Human body safety assessment method and system in human-machine collaboration

Abstract

A method and system for evaluating human body safety in human-machine collaboration; the method includes the following steps: (1) obtaining the pose of a human body in a global coordinate system; (2) obtaining the pose of a robot in a global coordinate system; (3) According to the acquired pose information, calculate the distance between the human body and the robot and the moving speed of the robot; (4) judge the safety of the human body in human-computer collaboration based on the calculated distance between the human body and the robot and the moving speed of the robot Level; the system includes a first acquisition module, a second acquisition module, a calculation module and an evaluation module. In the process of human-machine cooperation, the present invention determines the current safety state of the human body by monitoring the distance between the robot and the human body and the running speed of the robot, and makes the next work plan according to different safety states, effectively avoiding dangerous situations, and making the human-machine Collaboration is safer and more efficient.

Description

technical field [0001] The present invention relates to the field of human-robot collaboration, in particular to a method and system for evaluating human safety in the process of collaboration between a collaborative robot and a human. Background technique [0002] The rapid development of the robotics industry has put forward new requirements for the close cooperation between humans and robots, and has gradually spawned collaborative robots. Traditional industrial robots are designed with fence isolation. When the robot is working, the staff is not allowed to enter, or when the staff enters, the robot must stop working. This method not only wastes the working space, but also reduces the overall work efficiency. Collaborative robots, on the other hand, can work collaboratively with people without the need for isolation by guardrails, and combine people's "knowledge, analysis, and decision-making" capabilities with the "power, precision, and repeatability" of robots. Collabo...

AI Technical Summary

Problems solved by technology

[0003] According to Asimov's Three Laws of Robotics, no matter what kind of robot, it should not harm humans or the robot itself in any situation and environment, so safety is the primary issue and mandatory constraint for the application of robots in the field of human production and life. There is no safety awareness in itself. If a collision occurs when a human and a robot work together, the operator in a vulnerable position will have a relatively large safety hazard. Therefore, it is necessary to conduct a full safety assessment for each possible risk point of the collaborative robot and formulate corresponding protection measures. measures to ensure the safety of operators

[0004] The current human body safety assessment method in human-machine collaboration only judges the safety status of the human body by calculating the distance between the robot and the human body, while ignoring the impact of the important parameter of the robot’s movement speed on human body safety, resulting in human-machine collaboration. Phenomena such as inaccurate human body safety assessment and inability to investigate specific risks

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