Reliability analysis of microprocessor systems with watchdog processors

A large number of microprocessors ( Ps) have been widely used in many practical fields and the demand for improvement of their reliabilities have recently increased. Watchdog processors (WDPs) are small and simple coprocessors that can detect errors by monitoring the behavior of Ps. This paper formu...

Full description

Saved in:
Bibliographic Details
Published in:Journal of quality in maintenance engineering 1998-12, Vol.4 (4), p.263-272
Main Authors: Imaizumi, Mitsuhiro, Yasui, Kazumi, Nakagawa, Toshio
Format: Article
Language:English
Subjects:
Computers
Costs
Design engineering
Development
Information processing
Mathematical models
Microprocessors
Quality control
Reliability
Reliability engineering
Systems
Theory
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A large number of microprocessors ( Ps) have been widely used in many practical fields and the demand for improvement of their reliabilities have recently increased. Watchdog processors (WDPs) are small and simple coprocessors that can detect errors by monitoring the behavior of Ps. This paper formulates three reliability models of P systems with WDPs: model 1 considers the system where a main processor (MPu) has n WDPs with self checking. Next, model 2 considers the system with upper limit number of resets. Further, model 3 discusses the system with limit processing time. The expected costs of each model are derived and the optimal policies which minimize them are discussed analytically. Finally, the numerical examples are given.
ISSN:1355-2511
1758-7832
DOI:10.1108/13552519810233985