Automatic Water Irrigation System Using Arduino and Moisture Sensors

Abstract

Moisture sensor is a device whose primary purpose is detecting the amount of water present in the soil layer in terms of volume. This primarily operates on the inherent properties of the soil i.e. electrical conductivity, dielectric and interaction between electrons as a measurable quantity for the volumetric content of water which has the highest efficiency when conditions are as per the calibrations made. Now the moisture sensor is calibrated as per the soil properties which may vary according to the environmental changes such as the temperature, humidity ,pressure in the particular area, the height above the sea level the closeness to the equator and so on. All these properties determine the total conductivity of current across the soil layer which is in turn measured by the moisture sensor. Hence the portable version of an automatic water irrigation system can be easily used by any farmer or gardeners. Thus the calibration and keeping the physical conditions around the area to be monitored should be of primary importance. Here, the paper describes the methods to enhance and optimize the process and simplify the techniques to detect and sense the moisture level using arduino. Thus making the device much portable and easy to operate and understand by any layman who gets it from the market and hence even making it much economical and reliable.

Keywords: Moisture sensor, humidity, arduino .