Here is a robotic airbag system that protects humans around robots handling sharp objects. A KUKA Innovation Award 2017 finalist, this robotic system has an end-of-arm airbag that inflates around tools and pieces. Its pressure sensors stop bag inflation when obstruction is detected.
Collisions with airbag will stop robot movement. The robot knows the state of the airbag at all times. Team RAS | DLR-RM is behind this idea.