Design And Implementation Of Rf Based Irrigationsystem Control

Abstract

In crop production a healthy water balance is essential for high quality yields. Under-watered crops suffer from nutrient deficiencies while over-watered plants are more susceptible to diseases pressure and can in some cases lead to root death through suffocation. Also over-watered plants are not able to withstand dry spells during dry season, because the existing irrigation systems are mostly based on traditional and rarely with electrical control system. For this reason, we use control engineering principles and concepts to provide a RF based automatic irrigation system control. The automated irrigation system is controlled using AT89C52 microcontroller based on RF transceiver. The system is programmed via the microcontroller to give interrupt signal to the irrigation system (drip, sprinkler, ditch etc) depending on the soil moisture levels. The soil moisture levels are checked using soil moisture sensor. Whenever there is a change in moisture in the soil these sensors senses the change and transmit it through RF transmitter, and gives an interrupt signal to the micro-controller through RF receiver and thus the watering system is activated or deactivated via switching relays. This system will help in saving money and water and at the same time increasing crops production.