Exterior Sensing and ADAS application block diagrams
Exterior sensing and ADAS is powered by ams OSRAM, whether it is sensors and emitters for classic light, rain, and tunnel sensing functions, or enabling new driving assistance or autonomous driving functions with our infrared lasers for LIDAR
Exterior Sensing & ADAS
Today’s and tomorrow's vehicles contain a significant number of exterior sensing functionality for safety-related functionality and to increase the comfort for the driver. Lasers are at the core of LIDAR sensors, which provide advanced driver assistance and automated driving functions with accurate 3D data of the surrounding. Various infrared emitters and detectors, as well as ambient light sensors enable Rain, Light, and Tunnel sensing to automatically switch headlights on and off and adjust the air conditioning to the amount of sunlight. For easy entry into the vehicle and opening of the trunk, capacitive proximity sensors detect touch and movement for functions like kick sensing.
Light, Rain & Tunnel Sensing
Rain sensing uses a combination of an infrared LED and an infrared photodiode. Here, the infrared light is coupled into the windshield glass pane and measured by the photodiode. Raindrops on the windshield allow some of the infrared light to escape the glass pane, and the measured difference in infrared light enables to determine the amount of rain to adjust the windshield wipers.
Tunnel sensing uses a visible spectrum photodiode with a field-of-view directed in the direction of driving. A dark tunnel entrance leads to lower detected light levels and prompts the vehicle software to activate the headlights.
To adjust the settings of the air conditioning system to the amount of sun light and its effects on heating up the interior of the vehicle, solar load sensing employs an infrared photodiode which provides the light level to the vehicle controller.
Similarly, ambient light sensing allows to adjust the brightness of interior ambient and functional lighting or the backlighting of displays to the environmental light level by using ambient light sensors that are also available in versions with a spectral sensitivity similar to the human eye.