Adaptive headlight system design using hardware-in-the-loop simulation

Abstract

According to traffic accident data, the majority of severe road accidents occur at night. It is, therefore, of great importance to use available technology to contribute to road safety by improving the visual conditions provided by vehicle headlights. This paper presents the hardware in the loop simulation of an Adaptive Headlight System for motor vehicles. The Adaptive Headlight System is an active safety system, where the headlamp orientation control system rotates the right and left low beam headlights independently and keeps the beam as parallel to the curved road as possible to provide better night time visibility. In the paper, the real time vehicle and road models used are presented first. The hardware-in-theloop simulation setup proposed for testing the adaptive headlight concept is then given. Real time simulations using this simulator are used to illustrate the approach.

Adaptive Headlamps in Automobile: A Review on the Models, Detection Techniques, and Mathematical Models

“…However, the latency of the system, ie., the response time for the system to adjust to the changing driving condition is to be discussed and is critical in an automobile application. Cesar, D. S., & Castro, M. [7] developed headlamp swiveling algorithms based on the geometry of the highway to decide on the HSD(Headlight Sight Distance) and its performance was studied as shown in Figure 5. To assess the HSD, the headlamp beam is adjusted according to the headlamp position of the vehicle relative to that of the driver, and the geometric equation for the position of the headlamp was deduced.…”

“…Also, the system is not calibrated to meet the highway standard which is crucial to make this a viable market product. Finally in [7], system performance in varying speed conditions which is predominantly important is not conducted.…”