Sensor Networks for Monitoring Traffic

Traffic surveillance is currently performed with inductive loop detectors and video cameras for the efficient management of public roads. This paper proposes an alternative traffic monitoring system using wireless sensor networks that offers high accuracy and lower cost compared. The system consists of two parts: wireless sensor network and access point. Traffic information is generated at the sensor nodes and then transferred to the access point over radio. Our prototype called Traffic-Dot achieves vehicle detection accuracy of 97% and accurately measures speed with a node pair. The communication protocol PEDAMACS (Power Efficient and Delay Aware Medium Access Protocol for Sensor Networks) is shown to increase the lifetime of the system up to several years while still guaranteeing the timely arrival of information from the sensor nodes to the access point.

[1]  Chunxiao Li,et al.  Acquisition of traffic information using a video camera with 2D spatio-temporal image transformation technique , 1999, Proceedings 199 IEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems (Cat. No.99TH8383).

[2]  David E. Culler,et al.  The Emergence of Networking Abstractions and Techniques in TinyOS , 2004, NSDI.

[3]  Suresh Singh,et al.  PAMAS—power aware multi-access protocol with signalling for ad hoc networks , 1998, CCRV.

[4]  Keshab K. Parhi,et al.  Distributed scheduling of broadcasts in a radio network , 1989, IEEE INFOCOM '89, Proceedings of the Eighth Annual Joint Conference of the IEEE Computer and Communications Societies.

[5]  Cheol Oh,et al.  Real-Time Traffic Measurement from Single Loop Inductive Signatures , 2001 .

[6]  Neeli R. Prasad,et al.  A state-of-the-art of HIPERLAN/2 , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[7]  Deborah Estrin,et al.  An energy-efficient MAC protocol for wireless sensor networks , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[8]  Pravin Varaiya,et al.  PEDAMACS: power efficient and delay aware medium access protocol for sensor networks , 2004, IEEE Transactions on Mobile Computing.

[9]  Pravin Varaiya,et al.  Optimal Placement of Relay Nodes for Energy Efficiency in Sensor Networks , 2006, 2006 IEEE International Conference on Communications.

[10]  M J Caruso,et al.  VEHICLE DETECTION AND COMPASS APPLICATIONS USING AMR MAGNETIC SENSORS , 1999 .