Design of a composite sensor node in agricultural ubiquitous sensor networks

Abstract

This paper first designs and implements a composite sensor node capable of reliably collecting sensor data mainly and delivering control actions to actuators in the agricultural sensor network, and then presents the corresponding ubiquitous sensor network architecture that integrates an intelligent information technology. Consist of a main control unit, a sensor interface base board, an actuator interface & control board, a global network interface module, and a sensor signal acquisition board, the composite node extends the data transmission range, regulates power according to the device operation type, exploits lightweight 6LowPAN and IPv6 protocol, and makes it possible to share pin connections between a group of sensor devices. Our design can contribute to building an efficient sensor data processing framework which can seamlessly combine XML specification, an expert system, a filtering engine, and sensor query lifetime management. © 2011 Springer-Verlag.