ÿþ<html><head> <title>A Wireless Sensor System for Prognostics and Health Management</title></head> <body bgcolor="#ffffff"> <center> <i>IEEE Sensors Journal, Volume 10, Issue 4, pp. 856 &ndash; 862, 2010</i> <br> <h2>A Wireless Sensor System for Prognostics and Health Management</h2> <p> <strong>Shunfeng Cheng, <em>Student Member, IEEE</em> <br> </strong>Prognostics and Health Management Laboratory <br> Center for Advanced Life Cycle Engineering (CALCE) <br> University of Maryland, <br> College Park, MD 20742 USA</p> <p><strong>Kwok Tom, <em>Member, IEEE</em></strong><br> Army Research Laboratory <br> Adelphi, MD 20783 USA</p> <p><strong>Larry Thomas</strong><br> ePrognostic Systems LLC <br> Leander, TX 78641 USA</p> <p><strong>Michael G. Pecht, <em>Fellow, IEEE</em></strong><br> Prognostics and Health Management Center <br> City University of Hong Kong <br> and <br> Center for Advanced Life Cycle Engineering (CALCE) <br> University of Maryland<br> College Park, MD 20742 USA</p> <p>&nbsp;</p> </center> <p><b>Abstract:</b></p> <p>This paper introduces a novel radio-frequency-based wireless sensor system and describes its prognostics and health management functions. The wireless sensor system includes a radio frequency identification sensor tag, a wireless reader, and diagnostic-prognostic software. The software uses the sequential probability ratio test with a cross-validation procedure to detect anomalies, assess degradation, and predict failures. The prognostic performance of the sensor system is demonstrated by a field application. <p><strong>Index Terms</strong>&mdash;Cross-validation, prognostics and health management (PHM), radio frequency identification (RFID), sequential probability ratio test (SPRT), wireless sensor system. <p><a href="../../fulltext/2010/WirelessSensors_PHM.pdf">Complete article</a> is available to CALCE Consortium Members. <p><font size="-2"><font color="red">&copy; IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.</font></font> <hr><br> <center> [<a href="http://www.calce.umd.edu">Home Page</a>] [<a href="../../../articles">Articles Page</a>] </center> <center> <font size="-1">Copyright &copy; 2010 by CALCE and the University of Maryland, All Rights Reserved </font> </center> </body></html>