A Web Services-Based Infrastructure for Traffic Monitoring Using ZigBee

This paper presents our experience in building an infrastructure of combining ZigBee with Web services for remote accessing and control of a network. A prototype traffic monitoring system was implemented based on this infrastructure as a proof-of-concept. However there is a much wider range of applications for this infrastructure. Currently, the infrastructure mainly concerns with the information delivery within the network. A multi-layer architecture was designed and implemented so that the infrastructure can be flexible and extensible for multiple applications. Within the infrastructure, the access points send data collected from the wireless sensor network to the application server. The data is then stored in a database on the application server for fast and reliable transactions. Users may then request certain data through a Web Service, or the data could be automatically delivered to the subscribers which are driven by specific events. The result of this preliminary work is an extensible application framework for information delivery over a large and low-cost ZigBee sensor network, and Web services platform.