Design of a wireless measurement system for use in wireless power transfer applications for implants

Badr Basem M.; Somogyi-Csizmazia Robert; Leslie Paul; Delaney Kerry R.; Dechev Nikolai; Badr Basem M.; Somogyi-Csizmazia Robert; Leslie Paul; Delaney Kerry R.; Dechev Nikolai

doi:10.1017/wpt.2016.12

2017 Volume 4

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Design of a wireless measurement system for use in wireless power transfer applications for implants

1.
Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8W 2Y2, Canada
2.
Department of Biology, University of Victoria, Victoria, BC, V8W 2Y2, Canada

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Author Bio:
Basem M. Badr received the B.Sc. in Electrical and Power Systems from Mansoura University, Egypt in 2007. He worked as an Automation Engineer at Dräxlmaier, in Cairo, Egypt in 2008. He received his M.Sc. in Electrical Engineering from King Saud University, Saudi Arabia in 2011. He is currently pursuing a Ph.D. degree in Mechanical Engineering at University of Victoria, since January 2012. He is working on magnetic resonant wireless power transmission (WPT) for implantable bio-sensors/stimulators. His research interests include Energy Harvesting, Nanopositioning Control, Intelligent Control, Robotics, PLC, and Electrical Drive Motor.

Robert Somogyi-Csizmazia received the B.Eng. degree in Electrical Engineering from University of Victoria, Victoria, BC, Canada, in 2006. From 2005 to 2007, he was employed at Schneider Electric as a test engineer for power systems. His duties included validating power meters for standards verification and writing test plans to meet new standards for communications protocols. He was consulted on the installation of alternative energy systems in remote areas while living in Mexico until 2009. At present, he is currently a Research Associate with the Neurobiology Department at the University of Victoria. His research interests include the development of wireless power transfer, design and fabrication of implantable electro-physiological devices, and wireless communication schemes.

Paul A. Leslie received the B.Eng. degree in Electrical Engineering from the University of Victoria, Victoria BC, Canada in 2006. From 2005 to 2013 he worked as an electrical design specialist at CanAssist at the University of Victoria designing customized accessibility technology for persons with disabilities. He has since worked as a Research Associate at the University of Victoria for the Neurobiology Department designing customized application specific inertial measurement units. His research interests include the development of wireless power transfer, inertial measurement unit design and algorithms and wireless embedded sensor designs.

Kerry R. Delaney received his B.Sc. in zoology from the University of British Columbia and Ph.D. in neuroscience from Princeton University, Princeton NJ in 1987. Next he undertook postdoctoral work in neuroscience at U.C. Berkeley, New York University and AT&T Bell laboratories before being appointed to the faculty at Simon Fraser University, BC in 1992. He joined the faculty at the University of Victoria in 2004 and is currently Professor of Biology and Chair of the Department. His research program focuses on synaptic and cellular neurophysiology of olfactory sensory processing, neuromuscular transmission and the role of synaptic dysfunction in neuro-developmental disorders such as Rett syndrome, using a variety of optical and electrophysiological techniques. See web.uvic.ca/delaneylab for more information.

Nikolai Dechev received the B.A.Sc., M.A.Sc., and the Ph.D. degrees in 2004, all from the Department of Mechanical Engineering, University of Toronto, Toronto, Canada, in 1996, 1999, and 2004, respectively. He is currently an Associate Professor in Mechanical Engineering at the University of Victoria, Victoria, BC, Canada. His research program centers on biomedical systems design in the area of hand prosthesis. This involves aspects such as bio-signal measurements, implantable sensors, and prosthesis control. He also has expertise in MEMS sensors, and robotic micromanipulation. Dr. Dechev is a Member of the IEEE
Corresponding author: B.M. Badar Email: bbadr@uvic.ca

Wireless Power Transfer 2017, 4(1): 21−32 | Cite this article

Abstract

The performance of wireless power transfer (WPT) systems is a function of many parameters such as resonance matching, coil quality factor, system impedance match, and others. When designing and testing WPT systems, reliable measurement of system performance is essential. In our application, we use WPT to power biomedical implants for telemetry acquisition from small rodents, where rodent behavior data is used to study disease models. Such an application employs a large primary coil and a much smaller moving secondary coil, which can be defined as a loosely coupled WPT (LCWPT) system. This paper presents a novel wireless measurement system (WMS) that is used to collect real-time performance data from the secondary circuit (implant), while testing LCWPT systems. Presently, measuring the performance of the secondary side of LCWPT systems while they are in operation can be problematic. The literature reports various measurement errors when using voltage/current probes, or coaxial cables placed directly into the primary magnetic field. We have designed the WMS to greatly reduce such measurement errors, where the WMS measures the induced voltage (and hence received power) and relays this information by radio. Experiments were done to test the WMS, as well as comparison with cable-based measurements.
- Loosely coupled wireless power transfer,
- Magnetic resonance,
- Parameter measurement,
- Design,
- Biomedical telemetry device

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Badr BM, Somogyi-Csizmazia R, Leslie P, Delaney KR, Dechev N. 2017. Design of a wireless measurement system for use in wireless power transfer applications for implants. Wireless Power Transfer 4(1): 21-32 doi: 10.1017/wpt.2016.12

Badr BM, Somogyi-Csizmazia R, Leslie P, Delaney KR, Dechev N. 2017. Design of a wireless measurement system for use in wireless power transfer applications for implants. Wireless Power Transfer 4(1): 21-32 doi: 10.1017/wpt.2016.12

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Design of a wireless measurement system for use in wireless power transfer applications for implants

1.
Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8W 2Y2, Canada
2.
Department of Biology, University of Victoria, Victoria, BC, V8W 2Y2, Canada

Author Bio:
Basem M. Badr received the B.Sc. in Electrical and Power Systems from Mansoura University, Egypt in 2007. He worked as an Automation Engineer at Dräxlmaier, in Cairo, Egypt in 2008. He received his M.Sc. in Electrical Engineering from King Saud University, Saudi Arabia in 2011. He is currently pursuing a Ph.D. degree in Mechanical Engineering at University of Victoria, since January 2012. He is working on magnetic resonant wireless power transmission (WPT) for implantable bio-sensors/stimulators. His research interests include Energy Harvesting, Nanopositioning Control, Intelligent Control, Robotics, PLC, and Electrical Drive Motor.

Robert Somogyi-Csizmazia received the B.Eng. degree in Electrical Engineering from University of Victoria, Victoria, BC, Canada, in 2006. From 2005 to 2007, he was employed at Schneider Electric as a test engineer for power systems. His duties included validating power meters for standards verification and writing test plans to meet new standards for communications protocols. He was consulted on the installation of alternative energy systems in remote areas while living in Mexico until 2009. At present, he is currently a Research Associate with the Neurobiology Department at the University of Victoria. His research interests include the development of wireless power transfer, design and fabrication of implantable electro-physiological devices, and wireless communication schemes.

Paul A. Leslie received the B.Eng. degree in Electrical Engineering from the University of Victoria, Victoria BC, Canada in 2006. From 2005 to 2013 he worked as an electrical design specialist at CanAssist at the University of Victoria designing customized accessibility technology for persons with disabilities. He has since worked as a Research Associate at the University of Victoria for the Neurobiology Department designing customized application specific inertial measurement units. His research interests include the development of wireless power transfer, inertial measurement unit design and algorithms and wireless embedded sensor designs.

Kerry R. Delaney received his B.Sc. in zoology from the University of British Columbia and Ph.D. in neuroscience from Princeton University, Princeton NJ in 1987. Next he undertook postdoctoral work in neuroscience at U.C. Berkeley, New York University and AT&T Bell laboratories before being appointed to the faculty at Simon Fraser University, BC in 1992. He joined the faculty at the University of Victoria in 2004 and is currently Professor of Biology and Chair of the Department. His research program focuses on synaptic and cellular neurophysiology of olfactory sensory processing, neuromuscular transmission and the role of synaptic dysfunction in neuro-developmental disorders such as Rett syndrome, using a variety of optical and electrophysiological techniques. See web.uvic.ca/delaneylab for more information.

Nikolai Dechev received the B.A.Sc., M.A.Sc., and the Ph.D. degrees in 2004, all from the Department of Mechanical Engineering, University of Toronto, Toronto, Canada, in 1996, 1999, and 2004, respectively. He is currently an Associate Professor in Mechanical Engineering at the University of Victoria, Victoria, BC, Canada. His research program centers on biomedical systems design in the area of hand prosthesis. This involves aspects such as bio-signal measurements, implantable sensors, and prosthesis control. He also has expertise in MEMS sensors, and robotic micromanipulation. Dr. Dechev is a Member of the IEEE
Corresponding author: B.M. Badar Email: bbadr@uvic.ca

Wireless Power Transfer 4, Article number: 10.1017/wpt.2016.12 (2017) | Cite this article

Abstract: The performance of wireless power transfer (WPT) systems is a function of many parameters such as resonance matching, coil quality factor, system impedance match, and others. When designing and testing WPT systems, reliable measurement of system performance is essential. In our application, we use WPT to power biomedical implants for telemetry acquisition from small rodents, where rodent behavior data is used to study disease models. Such an application employs a large primary coil and a much smaller moving secondary coil, which can be defined as a loosely coupled WPT (LCWPT) system. This paper presents a novel wireless measurement system (WMS) that is used to collect real-time performance data from the secondary circuit (implant), while testing LCWPT systems. Presently, measuring the performance of the secondary side of LCWPT systems while they are in operation can be problematic. The literature reports various measurement errors when using voltage/current probes, or coaxial cables placed directly into the primary magnetic field. We have designed the WMS to greatly reduce such measurement errors, where the WMS measures the induced voltage (and hence received power) and relays this information by radio. Experiments were done to test the WMS, as well as comparison with cable-based measurements.

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