In this paper, a real time data acquisition system based on wireless sensor network is implemented using XBee Digi modules and open source hardware platform Arduino. This wireless sensor nodes are deployed in Fan and Pad Polyhouse. This system consists of two sensor nodes and a base station. These two sensor nodes are deployed at different location in polyhouse. The concept of Arduino UNO is used here to design nodes. Each node is equipped with Atmega 328 micro controller, XBee S2 module and DHT11 sensors. Both sensor nodes sense the temperature and relative humidity and then the collected information are sent to the sink node for storing with specific node ID. Each node also can store its own data using small memory at node level. Arduino Integrated Development Environment (Arduino IDE) is used here to upload programs to Arduino Hardware. The proposed system has been tested for three days and it is observed that results are satisfactory. It indicates that this system can be very useful for greenhouse monitoring and can control various physical parameters in the field as future work.

Arduino, XBee, DHT11 sensor, Wireless Sensor Network, Polyhouse

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