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Advantages of Directive Acoustic Sources for Audible Alert Systems in EV
Technical Paper
2015-36-0560
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The rapid growth of Electric Vehicles (EV’s) and Hybrid Electric Vehicles (HEV’s) has increased the concern that the relative silence of these type of vehicles will result in an increased risk to pedestrian safety. A practical solution to this problem is to add artificial sounds to EV's to aid their detection by pedestrians and other vulnerable road users.
Acoustic warning systems for EV’s should increase pedestrian safety and simultaneously produce a small impact on environmental noise levels. This paper shows the main advantage of using a directive acoustic source implemented as a beamforming loudspeaker array in an EV to increase pedestrian safety and control the effect on noise pollution. An example of such a system has been implemented in a Nissan Leaf vehicle and its performance in realistic situations has been assessed. The experimental results show that this type of approach is very effective to increase close-to-accident pedestrian safety near EV’s and simultaneously reduce noise pollution with respect to conventional acoustic warning devices.
Authors
Citation
García, J., Català, A., and Montané, X., "Advantages of Directive Acoustic Sources for Audible Alert Systems in EV," SAE Technical Paper 2015-36-0560, 2015, https://doi.org/10.4271/2015-36-0560.Also In
References
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- García , Juan J. et al The expected impact of eVADER technology in the safety of vulnerable road users International Conference on Noise and Vibration - ISMA 2014, Paper 455 KU Leven, Belgium 15 17 September 2014