GSM-based Smart Irrigation System using Moisture Sensor: A Summary

Abstract

In this article, to maximize the use of water for agricultural crops, an automated irrigation system has been created. The device has a distributed wireless network of sensors of soil moisture and temperature located in the plant's root zone. Therefore, a gateway device manages sensor data, activates actuators, and transmits data to a GSM. An algorithm was built with temperature and soil moisture threshold values that were programmed into a microcontroller-based gateway to control the amount of water in the plant's root zone. The device has a communication connection based on a cellular-GSM interface allowing data inspection and irrigation scheduling to be activated by a mobile SMS as a pump or sprinkler. The automated system was evaluated in a 136-day sage plant and water savings of up to 90 percent was achieved compared to traditional agricultural area irrigation practices. For 18 months, three replicas of the automated system are widely used elsewhere. The system has the potential to be useful in water-limited geographically isolated areas due to its power independence and low-cost.
Keywords: automated irrigation system, cellular-GSM, GSM module (mobile), regulated power supply, microcontroller, SMS, temperature and soil moisture sensor.