Hartung-Gorre Verlag
Inh.: Dr.
Renate Gorre D-78465
Konstanz Fon: +49 (0)7533 97227 Fax: +49 (0)7533 97228 www.hartung-gorre.de
|
S
|
Series in
Microelectronics
edited by Qiuting Huang
Andreas
Schenk
Mathieu
Maurice Luisier
Bernd
Witzigmann
Philipp Christoph Schönle,
A Power Efficient
Spectrophotometry & PPG
Integrated Circuit for
Mobile Medical Instruments
2017. XVI, 220 pages. € 64,00
ISBN 978-3-86628-590-3
Abstract:
Numerous non-invasive spectrophotometry and
photoplethysmography (PPG) based monitoring and imaging techniques have been
developed in the past decades, including arterial oxygenation estimation with
pulse oximetry, tissue perfusion assessment with near-infrared spectroscopy
(NIRS), and thereon based brain activity imaging. Applications in medical- and
neuroscience research as well as mobile diagnostics, long-term monitoring
devices, and fitness trackers require a small form factor. The non-invasive and
convenient optical interface to tissue is a major reason for the popularity of
the aforementioned techniques, especially in the consumer market and in
monitoring particularly vulnerable neonate patients. This however comes with
considerable power consumption for tissue illumination which renders data
acquisition current consumption relevant – if not dominant – in the system.
This thesis presents a PPG analogue front-end designed for integration in a
multi-biosensor system-on-chip. Compared to the state-of-the-art, a power
saving of 68% has been achieved for equal signal quality and conditions.
Further emphasis lies on low receiver noise, high maximum sampling rate,
ambient light suppression, multi-channel capability, and area efficiency. In
addition to the front-end circuit implementation, preliminary hardware
prototypes for wearable and implantable medical instrumentation are presented,
and the use of pulse wave velocity for blood pressure estimation is
investigated as a potentially less-invasive alternative to catheter based
pressure transducers in implantable telemetric systems for long-term
experiments in laboratory animals. In such a device multiple vital signs, i.e.,
heart rate, blood pressure, respiratory rate, and arterial oxygenation could be
covered by a single PPG probe.
About the Author:
Philipp Schönle was born in Grisons
in 1986. He received his BSc and MSc degrees from ETH Zurich, Switzerland, in
2009 and 2011, respectively. He joined the Integrated Systems Laboratory (IIS)
at ETH Zurich in late 2011 as a research and teaching assistant. His research
focused on analogue and mixed-signal integrated circuits for biomedical
instrumentation as well as hardware platforms for wearable and implantable
telemetric devices.
Direkt bestellen bei / to order directly from:
Hartung-Gorre Verlag / D-78465
Konstanz / Germany
Telefon: +49
(0) 7533 97227 Telefax: +49 (0) 7533
97228
http://www.hartung-gorre.de eMail: verlag@hartung-gorre.de