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International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 242654, 11 pages
http://dx.doi.org/10.1155/2012/242654
Research Article

A Novel Reliability Assurance Method for Cyberphysical System Components Substitution

1College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China
2Shanghai Development Center of Computer Software Technology, Shanghai 201112, China

Received 3 August 2012; Revised 4 October 2012; Accepted 8 October 2012

Academic Editor: Liguo Zhang

Copyright © 2012 Peng Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Reliability of cyberphysical system (CPS) components substitution is an important issue for CPS troubleshooting and system upgrading. In this paper, decision problem of components substitution is regarded as decision problem of services substitution through a service-oriented architecture of CPS. Further, a reliability assurance method for CPS service substitution is proposed, which comprises two parts. The first one is a qualitative judgment method for CPS service substitution according to the relationship between service compatibility and substitution based on time-space -calculus with time and space operators. The other one is consisted of substitution processes from above judgment results based on service management theory. Finally, a case study is performed to show how to apply this method to ensure CPS components reliable substitution. The experimental result shows that this method is reasonable and feasible.