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Optimization of wireless Bluetooth/spl trade/ sensor systems

Research group:


Publication Type:

Conference/Workshop Paper

Venue:

Proceedings of the 26th Annual International Conference of the IEEE EMBS


Abstract

Within this study, three different Bluetooth/spl trade/ sensor systems, replacing cables for transmission of biomedical sensor data, have been designed and evaluated. The three sensor architectures are built on 1-, 2- and 3-chip solutions and depending on the monitoring situation and signal character, different solutions are optimal. Essential parameters for all systems have been low physical weight and small size, resistance to interference and interoperability with other technologies as global- or local networks, PC's and mobile phones. Two different biomedical input signals, ECG and PPG (photoplethysmography), have been used to evaluate the three solutions. The study shows that it is possibly to continuously transmit an analogue signal. At low sampling rates and slowly varying parameters, as monitoring the heart rate with PPG, the 1-chip solution is the most suitable, offering low power consumption and thus a longer battery lifetime or a smaller battery, minimizing the weight of the sensor system. On the other hand, when a higher sampling rate is required, as an ECG, the 3-chip architecture, with a FPGA or micro-controller, offers the best solution and performance. Our conclusion is that Bluetooth/spl trade/ might be useful in replacing cables of medical monitoring systems.

Bibtex

@inproceedings{Lonnblad742,
author = {Jens L{\"o}nnblad and Javier Garcia Casta{\~n}o and Mikael Ekstr{\"o}m and Maria Lind{\'e}n and Ylva B{\"a}cklund},
title = {Optimization of wireless Bluetooth/spl trade/ sensor systems},
editor = {IEEE},
month = {September},
year = {2004},
booktitle = {Proceedings of the 26th Annual International Conference of the IEEE EMBS},
url = {http://www.es.mdh.se/publications/742-}
}