Microphone Array for Speaker Localization and Identification in Shared Autonomous Vehicles

Author:

Marques IvoORCID,Sousa JoãoORCID,Sá BrunoORCID,Costa DiogoORCID,Sousa PedroORCID,Pereira SamuelORCID,Santos AfonsoORCID,Lima CarlosORCID,Hammerschmidt Niklas,Pinto SandroORCID,Gomes TiagoORCID

Abstract

With the current technological transformation in the automotive industry, autonomous vehicles are getting closer to the Society of Automative Engineers (SAE) automation level 5. This level corresponds to the full vehicle automation, where the driving system autonomously monitors and navigates the environment. With SAE-level 5, the concept of a Shared Autonomous Vehicle (SAV) will soon become a reality and mainstream. The main purpose of an SAV is to allow unrelated passengers to share an autonomous vehicle without a driver/moderator inside the shared space. However, to ensure their safety and well-being until they reach their final destination, active monitoring of all passengers is required. In this context, this article presents a microphone-based sensor system that is able to localize sound events inside an SAV. The solution is composed of a Micro-Electro-Mechanical System (MEMS) microphone array with a circular geometry connected to an embedded processing platform that resorts to Field-Programmable Gate Array (FPGA) technology to successfully process in the hardware the sound localization algorithms.

Funder

European Structural and Investment Funds

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering

Reference56 articles.

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