Usage of photovoltaics in an automated irrigation system

This study presents the usage of photovoltaic electricity in an automated i rrigation system. The experimental setup consists of the controller, contro l valves, photovoltaic (PV) panels, back up batteries, and sensors. The sys tem is capable of irrigating the fields at a pre-specified time, day/s of t he week, and duration, It can also automatically irrigate the held if the s oil is dried below a certain specified value. This type of automated system will optimize the quantity of water required for a particular crop and for a specified area. There are few natural springs of water used for irrigati on purposes in the Kingdom. This system will also help in conserving water, besides its other advantages. (C) 2000 Elsevier Science Ltd. All rights re served.