Fraunhofer scientists have developed a new radar sensor system that issues an early warning for drivers and self-driving vehicles when a pedestrian is running toward the road or the car.
It does this with the help of AI and could be a boon at busy transport hubs where cars mix with cyclists, pedestrians, buses, and streetcars. The radar sensor system was jointly developed by Fraunhofer FHR, Fraunhofer IIS, and Fraunhofer IVI as part of the HORIS project.
According to the scientists, the sensors can be installed at critical points in the infrastructure such as bus and streetcar stops.
From these locations, they will monitor the speed of the people waiting at the stops and transmit the data to the moving traffic in the vicinity.
As these radar sensors do not record optical images, there cause no privacy or data protection issues. They could in the longer run be made complementary to the evaluation algorithms found in a car.
Fraunhofer FHR is concentrating on the technological side and is developing the algorithms which identify an object as a person, set a marker, and determine the speed at which the person is moving toward the road.
The radar sensor will be tasked with taking around a hundred measurements every second. An alarm will only be triggered if the person is consistently moving toward the road at a given minimum speed over the course of several measurements.
Fraunhofer IIS will focus on the reference measurement techniques and on motion capture. It is carrying out multiple measurement campaigns using 30 motion-capture cameras at its L.I.N.K. Test and Application Center.
These cameras are special as they can detect people who have been tagged with small markers over an area measuring 20 by 30 meters;.
Fraunhofer IVI on its part is identifying suitable test scenarios and is responsible for their development.
In the future, connected or self-driving vehicles could be told to drive more slowly if there are lots of people standing at a bus stop.
If, on the other hand, there is no one at the stop, cars can drive past at the maximum permitted speed.
Image and content: A.Shoykhetbrod/Fraunhofer FHR