WSN Architecture for Smart Irrigation System

In this paper, an architecture of a ZigBee wireless sensor network for application in smart irrigation system is proposed. After a brief overview of the most important features of ZigBee standard related to Wireless Sensor Network (WSN) operation, Arduino-based sensor node for acquisition of soil moisture and air temperature is described. This node is equipped with XBee S2 communication module in order to be part of the established WSN. Furthermore, we presented the reception of the collected data on the main control unit, designed on the Waspmote microcontroller platform equipped with XBee S2 coordinator. All necessary steps required to establish the communication between Waspmote platform and XBee S2 coordinator device are described, even though Waspmote platform is designed to communicate only with Xbee routers and end devices. Proposed architecture allows flexible implementation with reliable data transfer that provides necessary information for autonomous decision-making in smart irrigation system.