Development of a headlight glare simulator for a driving simulator

Development of a headlight glare simulator for a driving simulator

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Article ID: iaor20133363
Volume: 32
Issue: 4
Start Page Number: 129
End Page Number: 143
Publication Date: Jul 2013
Journal: Transportation Research Part C
Authors: ,
Keywords: simulation: applications
Abstract:

We describe the design and construction of a headlight glare simulator to be used with a driving simulator. The system combines a modified programmable off‐the‐shelf LED display board and a beamsplitter so that the LED lights, representing the headlights of oncoming cars, are superimposed over the driving simulator headlight images. Ideal spatial arrangement of optical components to avoid misalignments of the superimposed images is hard to achieve in practice, and variations inevitably introduce some parallax. Furthermore, driver’s viewing position varies with driver height and seating position preferences, exacerbating misalignment. We reduce the parallax errors using an intuitive calibration procedure (a simple drag‐and‐drop alignment of nine LED positions with calibration dots on the screen). To simulate the dynamics of headlight brightness changes when two vehicles are approaching, LED intensity control algorithms based on both headlight and LED beam shapes were developed. The simulation errors were estimated and compared favorably with real‐world headlight brightness variability.

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