Development of Energy Efficient WSN Based Smart Monitoring System

In agricultural greenhouses, the traditional method of monitoring the agricultural parameters is carried out by manually measurements. This method requires time and human-resources depending on the scale of the greenhouses. However, the measured data are sometimes inaccurate and leads to wrong activities, such as irrigation, which may make negative effects on plants, soils and increase unnecessary resource expenses. Fortunately, in the recent years, different modern technologies have been applied to agricultural sphere and implemented smart monitoring, smart irrigation and other hi-tech systems. However, it is still a major challenge to achieve better energy efficiency and reduce the cost of monitoring real-time parameters in high quality. In this research work, we developed and implemented a wireless sensor network (WSN) based monitoring system for specifically greenhouses and focused on solving the two main issues: longer life-longevity of WSN devices and lower the system cost. In order to achieve the longer life-longevity of wireless devices we developed specific WSN devices consisting of the most low-power consuming electronic components. Besides, an operational algorithm and measurement method has been developed. On the purpose of decreasing the hardware material costs, we did choose the most optimal priced electronic components. WSN sensor nodes make measurements of four parameters, soil moisture level, soil temperature, air humidity and temperature. The measured data is sent to coordinator node which forwards each received data packets to web platform of the system. Gardeners can monitor the real time agricultural parameters of their greenhouses with 5% maximum error through the web platform on any point of the earth where internet connection is available.