Service-Oriented Wireless Multimedia Sensor Network Middleware Using Infra-Red Cameras

Wireless multimedia sensor networks (WMSNs) provide new trends in data capturing. WMSNs characteristics such as limited resources and restricted power in addition to multimedia specifications such as high-bandwidth and real-time constraints have made programming for such networks complicated. To provide a high-level interface for programmers and end users a middleware is needed between OS layer and applications to hide low-level details. None of the existing middle-wares has focused especially on multimedia ones. In this article, we propose a middleware named SAWM based on network architecture suitable for WMSNs. This Network architecture is a three layered one that is composed of infra-red sensors, visual sensors and smart cameras. SAWM is a service-oriented agent-based middleware. It looks at the network as a service provider composed of several services that programmers just need to put needed services in an order and create a relation between them to make an execution flow. As a result code updates can be easily done and less memory is used for keeping programming codes. The proposed model is evaluated using a case study trying to commit a monitoring task.