||Wireless magnetic based sensor system for road traffic data collection
Antonio Serrador , Duarte Carona , F. Palhinha , Jorge Lopes
||A complete pre-industrial prototype implementation of an innovative system
capable to detect, classify and describe passing vehicles is presented. This work studies
the architecture of an autonomous road sensor network to help reducing the impact of
conventional magnetic wired systems in roads. The power supply is supported by no
rechargeable batteries, for communications the IEEE 802.15.4 with ZigBee on top are
used to transmit digitalized vehicle’s magnetic signatures up to classification server. This
information is acquired using a magnetometer translating in voltage the variation of the
Earth’s natural magnetic field caused by ferromagnetic components, induced by vehicles.
Results show a clear and distinguish magnetic signatures among different vehicles.
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