Distributed Acoustic Sensor Systems for Vehicle Detection and Classification

Chiang, Chia-Yen, Jaber, Mona, Chai, Michael and Loo, Jonathan ORCID: https://orcid.org/0000-0002-2197-8126 (2023) Distributed Acoustic Sensor Systems for Vehicle Detection and Classification. IEEE Access.

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Intelligent transport systems (ITS) are pivotal in the development of sustainable and green urban living. ITS is data-driven and enabled by the profusion of sensors ranging from pneumatic tubes to smart cameras which are used to detect and categorise passing vehicles. Simple sensors, such as pneumatic tubes, are successfully deployed for counting passing vehicles but are not useful for vehicle tracking or re-identification. Smart cameras, on the other hand, collect comprehensive information but suffer from occlusion, patchy coverage, and compromised vision in adverse weather and visibility. This work explores a novel ITS data source based on optical fibre which acts as uninterrupted length of virtual sensors using a distributed acoustic sensor (DAS) system. Based on real DAS data collected in the field, we first present a study of latent DAS features that uniquely identify a given vehicle, otherwise referred to as vehicle signature. We formulate a classification problem that examines incoming DAS data to extract vehicle signatures and identify the different types of vehicle. To this end, we implement different classification methods and present a comparative performance analysis that reveals novel insights into the potential role of DAS in ITS applications. This work is a pilot study of DAS for vehicle classification that is driven by real-DAS data and validated by promising results where a vehicle type is correctly identified with 94% accuracy and the size of a vehicle with 95% accuracy.

Item Type: Article
Depositing User: Jonathan Loo
Date Deposited: 25 May 2023 15:09
Last Modified: 25 May 2023 15:09
URI: https://repository.uwl.ac.uk/id/eprint/10004

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