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2020年11月15日 (日)

Evaluation of automated driving communication tool by driving simulator (2)


Mareri is researching and developing a system that controls the light distribution of headlamps and projects marks onto the road. ​This is called a digital write processing unit. The headlamp is capable of not only finely controlling the light distribution according to the traveling condition, but also projecting the mark for warning the driver on the road surface. In order to precisely control the light distribution, the projection of 3 LEDs is composed of 1.3 million micromirrors, and the angle of the micromirrors is finely controlled to create the light distribution pattern. ​Since the light distribution is fine, the glare of oncoming cars and pedestrians is minimized compared with conventional headlamps. ​Of course, an external recognition sensor detects other vehicles and pedestrians and adjusts the light distribution to the most optimum possible from the navigation information and the position of the vehicle. ​Then, a guideline is indicated at a place where the road width becomes narrow, and a mark indicating the direction of a pedestrian is also displayed. ​The marks projected onto the road may be recognizable by pedestrians, although this may only be at night. ​So could the digital light processing unit be the new communication tool for vehicles and pedestrians?

​Marelli's digital light processing unit isn't the first to mark roads. ​It is still fresh in our memory that it was announced in 2015 in the Mercedes-Benz concept car F015. The F015 was the Level 5 fully automated driving vehicle with the tagline Luxury in Motion. ​It is a phrase that expresses the state of realizing an interior in which the front seat can rotate backward and face the rear seat because there is no need to drive. In order to communicate with pedestrians, F015 installed LED matrix display units on the front and back of the vehicle to display messages. ​When there is a pedestrian, a zebra zone showing the pedestrian crossing is drawn on the road by a visible light laser, and the pedestrian can be urged to walk. ​When the pedestrian swings his/her hand, he/she understands the gesture, draws a text, and communicates with the pedestrian. Mercedes-Benz hired a social psychologist to research and develop a system to communicate with the pedestrian.

It is needless to say that the driving simulator can be utilized for the evaluation of these communication tools described here.

 

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