CaLiST a lighting tool for designing dynamic headlamp levelling systems

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CaLiST a lighting tool for designing dynamic headlamp levelling systems

Lehnert, P.

This paper has presented a method of how adaptive light functions should be designed. With the aid of the example of a dynamic headlamp levelling system this new approach is demonstrated step by step. Firstly, the demands an each adaptive light function have to be defined. These demands have to take into account the driver's as well as the oncoming driver's visual needs. Secondly, a tool is needed to check these demands at each moment during real traffic situations. Only with this check it is possible to optimise the adaptive light function towards the previously defined demands. If necessary, new investigations on how the eye behaves under dynamic conditions, may have to be done. For the dynamic headlamp levelling system the demands are defined. With CaLiST the appropriate tool is presented. It is not only an interactive environment to optimise the dynamic levelling function. Furthermore, it allows to achieve quantitative time-resolved results about the vehicle's vertical angular characteristics and its interaction with the light distribution. The simulation of dynamic driving situations in real time is no longer just a wish. Now the developing and tuning process of dynamic headlamp levelling systems is realised within the CAE (Computer Aided Engineering) and rapid prototyping idea. Test runs with a real prototype, however, are not completely unnecessary, but reduced to a minimum and with it the developing costs.