Web-based Editor for Signal Interpretation Models

A web-based editor for Signal Interpretation Models (SIM) is presented in this paper. SIM is a modeling formalism specifically created to specify the occurrence of events based on signals variation. This formalism goal is not only to specify but also to support the validation and implementation of signals interpreters. These signals can be system input signals (environment signals) or system internal signals. The created web-based editor uses Asynchronous JavaScript and XML (AJAX) principles and runs at standard browsers. It supports the creation/edition of graphical SIM models, which are saved in XML files. The XML format and the well defined execution semantics of the SIM formalism, enable the integration of SIM with other tools. This means that the created models can be used as inputs in tools, such as automatic code generators, to create simulation or execution code (namely JavaScript, C, and VHDL). To illustrate the application of the developed editor, the model of a system that detects temperature sensor faults is presented. The created edition tool prototype is currently available at http://gres.uninova.pt/SIM-Tools/.