ESF - An extensive service foundation from internet of things perspective

The increasing interest in the Internet of Things (IoT) has brought lots of opportunities and challenges to researchers. Cyber-space and physical world are more and more amalgamated by smart devices with networking capability. Making appropriate adaptations to satisfy new processing requirements is necessary for the extensive service in such an environment. In this paper, we propose a three-layer architecture for IoT: the sensor layer, processing layer and mining layer. We adopt a new design approach for the information-processing layer which focuses on five aspects: exchanging data format, data entity design, the method invocation style, the event decoupling and massive data processing. Our approach has been applied to an environmental protection system which is being used in more than 200 monitoring stations in Shanghai. There are 7 kinds of environmental information to be monitored and more than 70 million data items to be processed by this system every day.