Requirements Analysis for a Universal System Architecture for Ecological and Economical Driver Assistance Systems
Energy efficiency gain is becoming more and more important in present-day and future mobility against the background of increasing energy costs and emission regulations. Ecological Advanced Driver Assistance Systems can contribute to increasing the energy
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Requirements Analysis for a Universal System Architecture for Ecological and Economical Driver Assistance Systems Peter Korzenietz
4.1 Introduction 4.1.1 Motivation Advanced Driver Assistance Systems (ADAS) are becoming more and more relevant both for drivers and for the automotive industry. The availability and acceptance of ADAS are increasing, as can be seen in the growing diffusion of systems available in all different vehicle segments. Comfort systems in the past only available in the luxury segment, for example Adaptive Cruise Control (ACC), can now be ordered in vehicles in the compact segment. Even in the subcompact segment first advanced safety features, like an emergency brake for urban environment, can be found (Ruholl 2011, p. 10). Besides the growing spread of ADAS over all types of vehicles, the density of systems within single vehicles is increasing as well. Comfort and safety systems can be ordered and combined in a wide range. This leads to greater complexity in multiple aspects. The more capable the systems get, the more main and sub functions are included which have to work together in a coordinated and safe way. This complexity inside the systems leads automatically to a higher effort in the development process. When a specific function of a complex system is being changed, this may affect may other functions of the system and thus the system as a whole. Along with the interaction of functions inside a system, the systems themselves start to interact with each other. A complex network of functions across the whole vehicle is the consequence.
P. Korzenietz (B) Fachgebiet Fahrzeugtechnik, Technische Universität Darmstadt, Darmstadt, Germany e-mail: [email protected] M. Maurer and H. Winner (eds.), Automotive Systems Engineering, DOI: 10.1007/978-3-642-36455-6_4, © Springer-Verlag Berlin Heidelberg 2013
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The next big step after networking within the vehicle itself is networking with the environment. The vehicle can be connected to the internet, to the infrastructure and to other vehicles, e.g. via Vehicle2X (V2X) communication. Together with these trends, eco friendliness is the other big trend in automotive engineering. In this context especially, higher energy efficiency is a relevant dimension for the customer on one hand and the automotive industry on the other. An energy-efficient vehicle has two main advantages for the customer. With fuel becoming more and more expensive, an energy-efficient car can help to reduce fuel costs. This is relevant for vehicles with an internal combustion engine. The second advantage of an energy-efficient vehicle is the increased range. This point is especially relevant to Electric Vehicles (EV) in the light of the current limited capacity of used batteries. Overall, the customer can benefit in terms of economy and comfort. The car manufacturers benefit from efficient vehicles because they adhere to statutory requirements. To match the current and future emission regulations, greater energy efficiency is part of the right pat
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