Blueberries field irrigation management and monitoring system using PLC based control and wireless sensor network

The irrigation procedure in agriculture is a key factor in achieving good yields and plant performance. Water stress at critical times in the development of the blueberry crop can dramatically affect fruit yield and quality. However, blueberry plants may not show visual signs of stress. An automatic system of irrigation management is essential to long-term plant health. This paper presents a system capable of controlling an irrigation system autonomously. By acquiring humidity and temperature data, the system is capable of deliver proper quantity of water at the most advisable period, through the usage of a Programmable Logic Controller, optimising the water supply. The system is also accessible on the webpage created for it. The project includes wireless communication between the sensors boards and the main control board allowing the user to easily place the sensors wherever he wants.