Demo abstract: Design and implementation of a web service for liteos-based sensor networks
Masaaki Takahashi, Basit Hussain, Bin Tang · 2009
We design and implement a web service for LiteOS-based wireless sensor networks (WSNs). LiteOS is a newly developed operating system for the sensor networks. Taking advantage of UNIX-like shell commands and C programming language supported by LiteOS, we implement a web service middleware which interacts with the frontend web application as well as the WSNs such that users can remotely request and view the sensor readings. Our web service system is equipped with secure membership, a visualizer for sensor readings, and accepts parameterized queries from multiple users simultaneously. We also address the issues of improving user perceived response time and energy efficiency of sensor nodes in the web service. In this paper, we propose a web service architecture and implement a web service middleware for LiteOS-based wireless sensor networks. The layered architecture, shown in Figure 1, is comprised of an application layer, a web service middleware layer, and a WSN layer. The web service middleware interacts with the front-end web application as well as the WSNs such that users can remotely query and view the sensor readings of light, temperature, magnet, and acceleration.