A. WIRELESS SENSOR UNIT
A WSU is comprised of a RF transceiver, different
sensors, a micro-controller, ZigBee and power sourcesSeveral WSUs can be deployed in-field to configure a
distributed sensor network for the automated irrigation
system. Each unit is based on the micro-controller that
controls the radio modem ZigBee and processes
information from the soil-moisture sensor, temperature
sensor and water level sensor