Manufacturing environments are busy places with multiple machines, bustling workers and numerous machine-human interactions. Avoiding collisions between robots and humans is a high priority. Some solutions require a multilayered approach, integrating a variety of technologies, to create a reliable system. As more manufacturers add robots, there’s an increased interest in ensuring they work safely with each other and with humans.
Leveraging techniques from stacker cranes
Companies that increase their use of robotic automation can learn from collision avoidance techniques used with cranes, which received early attention because a collision with equipment in the work environment or the component itself was unacceptable. This posed a serious safety hazard that could cost thousands of dollars in lost production time and rework or scrap. By using 3D vision and industrial computers, collisions are now largely avoidable.
As technologies advance, dramatic system improvements are possible. That was the case with Boeing, which found its floor-based registration system for painting planes no longer provided the accuracy it needed. As a long-time partner to Boeing, Concept Systems Inc. stepped in to assist the aircraft manufacturer in addressing this issue by deploying a new collision avoidance system.
A key component of the new system adopted by Boeing in one of its paint hangers was the proximity query package (PQP), which can detect imminent collisions between two computer-generated objects. Information about the exact size and shape of the plane is exported from Boeing’s design software and then rendered as a 3D graphic in OpenGL, a widely accepted open graphics standard. It similarly renders the stacker platforms for validation and troubleshooting the system. Continue Reading →