A novel architecture enabling the visual implementation of web of Things applications

The concept of Internet of Things is becoming one of the key aspects for the future Internet, where embedded devices will be responsible for collecting data from the surrounding environment and making them available to useful mash-up applications. In order to guarantee a high feasibility of this scenario, it would be appropriate to have a flexible and intuitive architecture for the implementation of such applications without knowing specific details about the constrained hardware and operating system. Therefore, in this work, a software system for the graphical development of mash-up applications, dedicated to Wireless Sensor Networks, was designed and implemented. It is based on a Constrained Application Protocol application server, called Actinium, and on a graphical editor, called ClickScript. Especially the latter one has been substantially modified in order to communicate with Actinium and to interact with the constrained resources made available by the WSN. The effectiveness of the proposed solution has been tested through a real use case that has demonstrated the validity of the whole system.