REMES: A Resource Model for Embedded Systems

In this paper we introduce the model REMES for formal modeling and analysis of embedded resources such as storage, energy, communication, and computation. The model is a state-machine based behavioral language with support for hierarchical modeling, resource annotations, continuous time, and notions of explicit entry and exit points that make it suitable for component-based modeling of embedded systems. The analysis of REMES-based systems is centered around a weighted sum in which the variables represent the amounts of consumed resources. We describe a number of important resource related analysis problems, including feasibility, trade-off, and optimal resource-utilization analysis. To formalize these problems and provide a basis for rigorous analysis, we show how to analyze REMES models using the framework of priced timed automata and weighted CTL. To illustrate the approach, we describe a case study in which it has been applied to model and analyze resource-usage of a temperature control system.