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Research Spending & Results

Award Detail

Awardee:UNIVERSITY OF OKLAHOMA
Doing Business As Name:University of Oklahoma Norman Campus
PD/PI:
  • Hazem H Refai
  • (918) 660-3243
  • hazem@ou.edu
Award Date:01/14/2010
Estimated Total Award Amount: $ NaN
Funds Obligated to Date: $ 112,579
  • FY 2010=$57,771
  • FY 2011=$54,808
Start Date:01/15/2010
End Date:12/31/2012
Transaction Type:Grant
Agency:NSF
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.041
Primary Program Source:040100 NSF RESEARCH & RELATED ACTIVIT
Award Title or Description:Center for Electromagnetic Compatibility
Federal Award ID Number:0968984
DUNS ID:848348348
Program:IUCRC-Indust-Univ Coop Res Ctr

Awardee Location

Street:201 Stephenson Parkway
City:NORMAN
State:OK
ZIP:73019-9705
County:Norman
Country:US
Awardee Cong. District:04

Primary Place of Performance

Organization Name:University of Oklahoma Norman Campus
Street:201 Stephenson Parkway
City:NORMAN
State:OK
ZIP:73019-9705
County:Norman
Country:US
Cong. District:04

Abstract at Time of Award

0968984 University of Oklahoma; Floyd Grant The University of Oklahoma (UO) seeks to join the existing I/UCRC "Electromagnetic Compatibility" consisting of the Missouri University of Science and Technology (MST), the University of Houston (UH). And Clemson University (CU). Electromagnetic Compatibility (EMC) is an essential feature of virtually all high speed digital electronic assistants and home entertainment centers to essential control and information processing systems. EMC is the ability of these electronic systems to function reliably without causing interference to other electronic systems, being overly sensitive to weak signals generated by other electronic systems, and generating signals in one part of the system interfering with the operation of another part of the same system. The proposed research projects include both experimental and simulations and also include projects which aim to improve predictive and modeling capabilities so that future generations of devices can be designed to more effectively deal with this problem. The projects range from broad and ambitious (e.g. EMI effects on humans) to targeted and near-term (e.g. the design of a less "noisy" inverter for hybrid vehicles). The University of Oklahoma operated an NSF IUCRC Wireless EMC for several years and virtue of this experience, the University can contribute significantly to the management of the proposed site. The proposed Center will encourage collaboration amongst the four institutions, and is committed to providing a skilled and diverse workforce in the area of EMC as required by industry. The research will expose students and faculty to state-of-the-art research projects to the industry. The close collaboration with various industry partners will help establish a strong research base to enable development of consumer electronics and control and information systems. The proposing institution has the Multicultural Engineering Program (MEP) designed for the recruitment and retention of students who contribute to the diversity of the College of Engineering. The program provides services primarily for under-represented minority population.

Publications Produced as a Result of this Research

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N. LaSorte, H. Refai, D. Witters, S. Seidman, J. Silberberg "Wireless Medical Device Coexistence" Medical Electronics Design, v., 2011, p..

N. LaSorte, S. Rajab, H. Refai "Developing a Reproducible Non-Line-of-Sight Experimental Setup for Testing Wireless Medical Device Coexistence Utilizing ZigBee" IEEE Transactions on Biomedical Engineering, v.59, 2012, p..

N. LaSorte, B. Akunne, H. Refai "In Vitro Protocol to Study the Electromagnetic Interaction of RFIDs and Infusion Pumps" IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, April, v., 2010, p..

N. LaSorte, B. Akunne, H. Refai "In Vitro Protocol to Study the Electromagnetic Interaction of RFIDs and Infusion Pumps" IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, April, v., 2010, p..

N. LaSorte, Y. Burette, H. Refai "Experimental Characterization of Electromagnetic Propagation of a Hospital from 55-1950MHz" IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, April, v., 2010, p..

N. LaSorte, S. Rajab, H. Refai "Experimental Assessment of Wireless Coexistence for 802.15.4 in the Presence of 802.11g/n" IEEE Symposium on Electromagnetic Compatibility, v., 2012, p..

Publications Produced as Conference Proceedings

LaSorte, NJ;Barnes, WJ;Refai, HH "Characterization of the Electromagnetic Environment in a Hospital and Propagation Study" IEEE International Symposium on Electromagnetic Compatibility, v. , 2009, p.135 View record at Web of Science


Project Outcomes Report

Disclaimer

This Project Outcomes Report for the General Public is displayed verbatim as submitted by the Principal Investigator (PI) for this award. Any opinions, findings, and conclusions or recommendations expressed in this Report are those of the PI and do not necessarily reflect the views of the National Science Foundation; NSF has not approved or endorsed its content.

Project Outcomes and Findings Report

-       A protocol was developed in conjunction with the Food and Drug Administration to test electromagnetic susceptibility to implantable and wearable medical devices when subjected to a full-body millimeter wave scanner. An emulated millimeter wave testbed was also developed. A literature review and electromagnetic simulations were performed. Results demonstrated that medical devices cannot be tested in a saline torso according to ANSI/AAMI PC69:2007 due to attenuated differences between the human body and a Plexiglas saline tank.  A novel torso simulator was designed and fabricated to accommodate the differences by placing the active, implantable medical device “in-air.” A device was constructed to emulate the behavior of the millimeter wave scanner and to perform extensive electromagnetic interference tests. Electromagnetic tests were also performed between an actual full-body millimeter wave scanner and medical devices. Results show there is minimal interaction between implantable and wearable medical devices and full-body scanners deployed in airports.

-       A wireless coexistence protocol was created to assess the interaction between wireless heterogeneous networks. A wireless coexistence testbed was also developed. The development of a testbed is both necessary and important given that the exponential increase in the integration of RF transceivers is critical for medical and non-medical devices. The environment facilitates coexistence testing of devices with technologies such as cellular phones, cellular modems, IEEE 802.11b/g/n, RFIDs, and ZigBee, among others. Testing certifies that such a device can operate properly despite various wireless systems and networks present in the device vicinity. Testing software was developed in Labview on a National Instruments platform to emulate wireless network interference. Labview software is available to medical device companies for in house wireless coexistence testing to accelerate the design cycle of wireless medical devices. Wireless coexistence testing was performed with multiple medical device companies to satisfy the wireless coexistence portion of their 510(k) submission for their medical devices.

-       The 2.4 GHz ISM channel utilization was characterized in hospitals and residential area. The aim of the investigation was to obtain an understanding of wireless channel utilization in various environments wherein medical devices will exist. Using software defined radio, primarily USRP, the research team measured spectrum activities across 11 channels of the 2.4GHz ISM spectrum band, each of which constitutes 22 MHz of bandwidth. Duty cycle of each channel was determined, and duty cycle timing distributions were derived. Part of this work was included in an engineering senior capstone project for a group of four engineering students.

In addition to the aforementioned hardware and software achievements, the project had several broader ranging impacts.  A total of 10 scholarly articles were produced, including one in a scientific journal, seven presented and published at technical conferences, and two published in trade magazines.  Seven students were trained in scientific disciplines related to the project, including two doctoral students (one of whom has since graduated), five masters students (three of whom were granted degrees), and four undergraduate students two of whom were female students.

 


Last Modified: 05/31/2013
Modified by: Hazem H Refai

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