期刊
ELECTRONICS
卷 11, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/electronics11050766
关键词
Shared Autonomous Vehicle (SAV); Field-Programmable Gate Array (FPGA); microphone array; sound source localization
资金
- European Structural and Investment Funds in the FEDER component, through the Operational Competitiveness and Internationalization Programme (COMPETE 2020) [039334, POCI-01-0247-FEDER-039334]
With the ongoing technological transformation in the automotive industry, autonomous vehicles are approaching full vehicle automation. The concept of Shared Autonomous Vehicles (SAV) is becoming a reality, allowing unrelated passengers to share a driverless vehicle. To ensure passenger safety and well-being, a microphone-based sensor system is used to localize sound events inside the vehicle.
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.
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