BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20240310T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20231126T232816Z UID:E9D95207-D228-43F9-9BB0-6842FFDF6947 DTSTART;TZID=America/New_York:20231109T120000 DTEND;TZID=America/New_York:20231109T130000 DESCRIPTION:Abstract: Aging electrical wiring has been identified as an are a of critical national and international concern. Faults in aircraft wirin g have been implicated in a number of severe aircraft incidents including the TWA800 and SwissAir111 crashes. Electrical wiring is the number one ca use of home and building fires\, and is responsible for numerous incidents in consumer product safety\, photovoltaic systems\, vehicular safety/reli ability\, safety of nuclear facilities\, reliability of power distribution systems and communication systems\, and others.\n\nWhat could possibly be so hard about finding these electrical faults? This lecture describes the real-world challenges in electrical systems – live signals\, switching systems\, grounding and moisture\, vibration\, and more. We’ll talk abou t how electromagnetics\, signal processing\, artificial intelligence\, chi p and hardware design all merge to create new sensors that can detect and locate faults in critical systems. In particular\, I’ll describe the dev elopment and use of spread spectrum time domain reflectometry (SSTDR) for finding faults on live electrical systems. Using a tiny pseudo-noise (PN) code similar to your cell phone or GPS signal\, SSTDR hides within the noi se margin of existing signals\, enabling continuous monitoring and locatio n of very hard-to-find intermittent faults. And along with SSTDR came a ve ry broad family of broadband reflectometry systems and algorithms for anal ysis of the reflection signatures\, which we’ll discuss.\n\nAnd what is coming next? It turns out that the same reflectometry methods used to dete ct\, locate\, and diagnose faults can also measure complex impedance\, whi ch is what a vector network analyzer (VNA) is very good at. But spread spe ctrum can do it live (energized)\, in electrically noisy environments\, an d can control the signal to noise ratio to find very small changes in impe dance.\n\nAlong with the technical journey\, I’ll also describe my entre preneurship journey as we took this exciting research off the bench and in to the real world. Today SSTDR is used in aircraft manufacturing\, handhel d electrical testing\, undersea cable testing\, and has recently been appr oved for installation on Network Rail systems (UK). But our work is not do ne. Electrical systems are complex and varied\, and some very gnarly probl ems remain. I’ll share a vision for the future\, and some ideas about wh at it will take to get there.\n\nSpeaker(s): Dr. Cynthia M. Furse\, \n\nVi rtual: https://events.vtools.ieee.org/m/379068 LOCATION:Virtual: https://events.vtools.ieee.org/m/379068 ORGANIZER:aabdella@ieee.org SEQUENCE:18 SUMMARY:Arcs and Sparks: Live Reflectometry for Wires\, Photovoltaics\, and Impedance Measurements​ URL;VALUE=URI:https://events.vtools.ieee.org/m/379068 X-ALT-DESC:Description: <br /><p><strong><em>Abstract:</em></strong>&nbsp\; Aging electrical wiring has been identified as an area of critical nationa l and international concern.&nbsp\; Faults in aircraft wiring have been im plicated in a number of severe aircraft incidents including the TWA800 and SwissAir111 crashes.&nbsp\; Electrical wiring is the number one cause of home and building fires\, and is responsible for numerous incidents in con sumer product safety\, photovoltaic systems\, vehicular safety/reliability \, safety of nuclear facilities\, reliability of power distribution system s and communication systems\, and others.</p>\n<p>What could possibly be s o hard about finding these electrical faults? This lecture describes the r eal-world challenges in electrical systems &ndash\; live signals\, switchi ng systems\, grounding and moisture\, vibration\, and more.&nbsp\; We&rsqu o\;ll talk about how electromagnetics\, signal processing\, artificial int elligence\, chip and hardware design all merge to create new sensors that can detect and locate faults in critical systems. In particular\, I&rsquo\ ;ll describe the development and use of spread spectrum time domain reflec tometry (SSTDR) for finding faults on live electrical systems. Using a tin y pseudo-noise (PN) code similar to your cell phone or GPS signal\, SSTDR hides within the noise margin of existing signals\, enabling continuous mo nitoring and location of very hard-to-find intermittent faults. And along with SSTDR came a very broad family of broadband reflectometry systems and algorithms for analysis of the reflection signatures\, which we&rsquo\;ll discuss.</p>\n<p>And what is coming next? It turns out that the same refl ectometry methods used to detect\, locate\, and diagnose faults can also m easure complex impedance\, which is what a vector network analyzer (VNA) i s very good at. But spread spectrum can do it live (energized)\, in electr ically noisy environments\, and can control the signal to noise ratio to f ind very small changes in impedance.</p>\n<p>&nbsp\;Along with the technic al journey\, I&rsquo\;ll also describe my entrepreneurship journey as we t ook this exciting research off the bench and into the real world. Today SS TDR is used in aircraft manufacturing\, handheld electrical testing\, unde rsea cable testing\, and has recently been approved for installation on Ne twork Rail systems (UK). But our work is not done. Electrical systems are complex and varied\, and some very gnarly problems remain. I&rsquo\;ll sha re a vision for the future\, and some ideas about what it will take to get there.</p> END:VEVENT END:VCALENDAR