Συντάχθηκε 26-06-2014 20:22
από Aggelos Bletsas
Η ομιλία του καθ. Joshua Smith εστιάζεται σε ασύρματους αισθητήρες χωρίς μπαταρία και σε σχετικές εφαρμογές που καλύπτουν ένα ευρύ φάσμα,
από ιπτάμενες τεχνητές μέλισσες μέχρι τομογραφία.
Η ομιλία θα είναι ιδιαίτερα διδακτική για τους προπτυχιακούς και μεταπτυχιακούς φοιτητές μας, και σίγουρα ένα ευχάριστο διάλειμα από το διάβασμα της εξεταστικής. Ο ομιλητής είναι από τους πρωτοπόρους διεθνώς στον τομέα του.
Α.
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Πέμπτη 3 Ιουλίου, 09.00-10.00,
Αμφιθέατρο Κτιρίου Επιστημών.
Τίτλος: Powering the Internet of Things: RF-Powered Sensing, Computing and Communication
Ομιλητής: Joshua R. Smith
Associate Professor
Department of Computer Science and Engineering
Department of Electrical Engineering
University of Washington
http://sensor.cs.washington.edu/jrs.html
Περίληψη:
Delivering power using Radio Frequency (RF) signals instead of ohmic conduction
is changing the design of systems such as implanted medical devices,
smart structures, and consumer electronics. From Eniac to today, the energy efficiency of computing has improved by a factor of one trillion;
this energy scaling trend is one of the key enablers for wireless power today.
I will describe several systems my lab has developed in the course
of exploring the space of wireless power techniques.
WISP (Wireless Identification and Sensing Platform) is a platform for sensing
and computing that is powered and read by standards-compliant UHF RFID readers.
It has been used by researchers around the world for both "perpetual sensing"
and RFID security research. Our ABC (Ambient Backscatter Communication) nodes
are powered by ambient RF signals (such as TV or cell phone signals);
ABC nodes communicate by reflecting pre-existing RF signals, rather
than generating their own signals.
WISP and ABC operate in the far field and have power budgets of
tens of microwatts. WREL (Wireless Resonant Energy Link) and
FREED (Free-range Resonant Electrical Energy Delivery) operate in the near
field and provide tens of watts. The FREED system powers Left Ventricular
Assist Devices (LVADs), implanted heart pumps that today require a transcutaneous
power cable. I will also outline ourrecent projects on fully
implanted ElectroCorticography and Brain-Computer-Spinal Interface.
I will conclude by reflecting on changes to the design space enabled
by wireless power, and discussing future directions for RF-powered sensor and actuator systems.
Bio:
Joshua R. Smith is an Associate Professor in the departments of
Computer Science and Engineering and Electrical Engineering at the University of Washington, Seattle, where he leads the Sensor Systems research group. He is an Allen Distinguished Investigator, he is the thrust leader for Communications and Interface in the NSF Engineering Research Center (ERC) for Sensorimotor Neural Engineering, and he is the theme leader for Low Power Sensing and Communication in the Intel Science and
Technology Center for Pervasive Computing.
In recent years his research as focused on wirelessly powering and communicating
with sensor systems in applications such implanted biomedical electronics, ubiquitous
computing, and robotics. Previously, he co-invented an electric field sensing system
for suppressing unsafe airbag firing that is included in every Honda car. He is the editor of a book entitled “Wirelessly powered sensor systems and computational RFID” (Springer, 2013) that includes his work in this area as well as related work by other researchers. He received B.A. degrees in computer science and philosophy from Williams College, the M.A. degree in physics from Cambridge University, and the Ph.D. and S.M. degrees from the MIT Media Lab’s Physics and Media group.
