Fail-Safe Emergency-Stop System with Transformation from Traffic Flow to Multi-Body Physics

Simulation in OCTANE

The application example “Fail-Safe Emergency-Stop System” combines several new features: First, OCTANE offers a new visualization by integrating a physically-based open source render engine. Furthermore, the vehicles are simulated with different so-called steppers at different time instances: While at the beginning all vehicles are moved via a traffic flow model, a simulation based on multi-body physics has to be calculated for the shown collision of the ego-vehicle with other traffic participants. The transformation of objects from traffic flow into multi-body physics is performed online during the simulation and in real time. This event is triggered externally by pressing a button on a control unit. Finally, as another feature, an ego-vehicle camera and a depth sensor is simulated and visualized in the video.

The Fail-Safe Emergency-Stop System

The functionality of the new emergency-stop system is registered for patent together with the FZI Forschungszentrum Informatik. A prototypical implementation of the emergency-stop system was developed by Institute of Vehicle System Technology (Institut für Fahrzeugsystemtechnik – FAST) as a stand-alone demonstrator as well as integrated into one of the VERTEX vehicles of the Fraunhofer IOSB. Test drives with the system have been carried out and can be found in the corresponding publication at the “TÜV Conference Automated Driving”.

Video of the Fail-Safe Emergency-Stop System

The video demonstrates the risk of rear-end collisions when using regular emergency braking systems, as well as the risk mitigation provided by the adaptive fail-safe emergency stop system.