Body safety assessment method and system in human-machine cooperation

Abstract

The invention discloses a body safety assessment method and system in human-machine cooperation. The method comprises the following steps: (1) obtaining pose, under a global coordinate system, of a body; (2) obtaining pose, under the global coordinate system, of a robot; (3) according to the obtained pose information, calculating a distance between the body and the robot and motion speed of the robot; (4) and judging safety level of the body in the human-machine cooperation according to the calculated distance between the body and the robot and the calculated motion speed of the robot. The system comprises a first obtaining module, a second obtaining module, a calculating module and an assessment module. In a human-machine cooperation process, the safety state of the current body is determined by monitoring the distance between the robot and the body and the motion speed of the robot, and a next-step working plan is made according to different safety states, so that the occurrence of adangerous situation is effectively avoided, and therefore, human-machine cooperation is safer and more efficient.

Description

technical field [0001] The invention relates to the field of human-machine collaboration, in particular to a human body safety assessment method and system in the process of collaboration between a collaborative robot and humans. Background technique [0002] The rapid development of the robot industry has put forward new requirements for the close cooperation between humans and robots, which has gradually spawned collaborative robots. Traditional industrial robots are designed with fences to isolate them. When the robot is working, the staff are 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 humans without the need for fences to isolate them, and combine human's "knowledge, analysis, and decision-making" capabilities with robots' "strength, precision, and repeatability." Collaborati...

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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