IEEE Workshop on Accelerated Stress Testing and Reliability (ASTR), Austin, TX, USA, October 2-5, 2005

Environment and Usage Monitoring of Electronic Products for Health (Reliability) Assessment and Product Design

N. Vichare, P. Rodgers, V. Eveloy and M. Pecht
CALCE - Electronic Products and Systems Center
University of Maryland
College Park, MD 20742


Prognostic health monitoring (PHM) permits the reliability of a system to be assessed in its actual application conditions. One method of implementing PHM is by monitoring the environmental and usage loads experienced by the product in its life cycle and utilizing it for real time or near real time health assessment. In this method, one of the challenges faced is to effectively collect the life cycle data for in-situ health assessment.

In this paper, an integrated hardware-software microprogrammable module for health and usage monitoring of electronic products in their application environment is presented. The hardware incorporates local sensors, and onboard processing power using embedded software. These data processing capabilities are intended to enable immediate and localized processing of the raw sensor data to reduce the power and memory consumption anticipated during load monitoring. Guidelines are also provided to develop a life cycle monitoring plan, that encompasses the selection of environmental and usage parameters. A case study is presented to illustrate the methodology.

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