Microcontroller Based Closed Loop Automatic Irrigation System
Neelam R. Prakash1, Dilip Kumar2, Tejender Sheoran3

1Dr. Neelam R. Prakash, HOD, Dept. of Electronics and Electrical Communications Engineering, PEC Univ. of  Technology, Chandigarh, India.
2Dr. Dilip Kumar, Senior Design Engineer, Centre for Development of Advanced Computing, Mohali, India.
3Tejender Sheoran, Dept. of Electronics and Electrical Communications Engineering, PEC Univ. of  Technology, Chandigarh, India.

Manuscript received on May 01, 2012. | Revised Manuscript received on May 30, 2012. | Manuscript Published on June 10, 2012. | PP: 4-6 | Volume-1 Issue-1, June 2012. | Retrieval Number: A105051112/2012©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In last few decades, electronics and communication have become an integral part of our lives, always expanding into new realms, to provide ways to do things in precise manner. With the recent developments in wireless networks especially regarding power requirements and cost, it has become possible to conceive a comprehensive model for precision agriculture. In this paper we present a closed loop automatic irrigation system along with the temperature and water usage monitoring. The system can be used in greenhouses as well as open fields. The real time values of soil moisture, temperature(useful in greenhouse cultivation) are wirelessly transmitted using Zigbee technology from field to substation which controls the state of the motor and irrigation valves according to the desired moisture levels set by the user. A flow sensor is also interfaced to the main water supply which continuously tracks the water applied to the field. All the information viz. temperature, current soil moisture level in field, upper and lower moisture levels to be maintained in field (set by user), motor status, water usage and flow rate are displayed on LCD. 
Keywords: Automatic irrigation, Zigbee, Closed loop, Wireless, Precision agriculture.