27 Wireless Ad Hoc Sensor Networks

Wireless data communication for agricultural purposes relies on: one or more sensors of environmental data (temperature, humidity etc.); a signal conditioner; an analogue to digital converter; a microprocessor with an external memory chip; and a radio module for wireless communication between other sensor nodes and/or a base station (Popescu 2007).

One of the first wireless networks for agriculture was built for the Dutch Lofar Agro research project (Visser 2005). It consisted of 150 sensor boards (based on the Mica2 Crossbow wireless sensor platform) deployed in a field for gathering temperature and humidity data (Popescu 2007). The data received by the sensors was handled by a microprocessor implementing the ...

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