A Traffic Monitoring and Queue Detection System Based on an Acoustic Sensor Network
Barbara Barbagli, Luca Bencini, I. Magrini, Gianfranco Manes, Antonio Manes · 2011
Abstract—Wireless Sensor Networks for real time traffic monitoring in Intelligent Transportation Systems is currently considered one of the challenging application area for this emerging technology. The promise of an unmanaged infras-tructure, with a continuously decreasing cost per unit, attracts the attention of both final users and system integrator, opening new business opportunities. This paper describes a Traffic Monitoring Wireless Sensor Network system, based on acoustic arrays and powered by an effective post-processing detection. A practical case study is presented starting from a real problem and reaching the best architectural solution with particular fo-cus on hardware implementation and communication protocol design. Finally, real experience results are shown to highlight the reliability of the developed system. Keywords-wireless sensor network; acoustic sensors; traffic monitoring; cross-layer routing protocol. I.