21-05-2012, 12:13 PM
Biomedical Wireless Sensor Network
Biomedical%20Wireless%20Sensor%20Network%20%28BWSN%29_NICe%20report_web.pdf (Size: 3.24 MB / Downloads: 93)
Executive Summary
Within the hospital or extended care environment, there is an overwhelming need for
constant and invisible monitoring of more and more vital body functions. Today’s
biomedical sensor solutions are effective for an individual measurement (for example
ECG), but are not integrated into a complete body area network, where many
simultaneous sensors are working at the same time on an individual patient. Also there is
a need for increasing patient mobility, and in many cases, sensors for biomedical
monitoring are not yet wireless. This creates the need for the implementation of new
biomedical personal wireless networks with a common architecture and the capacity to
handle multiple sensors monitoring different body signals.
The purpose of the project was to develop, implement and test a biomedical wireless
sensor network (BWSN) comprising body sensors that communicate wirelessly with the
patients control device for monitoring and external communication. The project focused
especially on wireless communication and multi-sensor signal integration. Further, the
purpose was to create a basis for collaboration on product and services opportunities,
including spin off projects.
The project was funded by the Nordic Innovation Centre (NICe) and Svensk-Norsk
Næringslivssamarbeid (SNN).
Method/implementation:
The project objective was obtained by performing the following activities:
Sensor requirements to communication, included evaluation of basic
communication alternatives. We divided the requirements into the following parts:
o The different sensors overall requirements to communication
o Common sensor communication protocol
o Physical layer requirements
o Detailed radio module requirements: voltage 3 V, electrical connector, sub
modules; radio, power control, antenna, AD converter
Software platform for signal visualisation and storage. A common software
platform was developed included user interface from application layer (API) and
upwards on PDA/PC
A common sensor message format or communication protocol was developed due
to the lack of standard protocols on the market.
Concrete results and conclusions:
The biomedical wireless sensor network (BWSN) was developed, implemented and tested
at the Interventional Centre at the Norwegian National Hospital. The BWSN shows
monitoring of all wireless sensors at the same time. Four different sensors were
integrated:
Memscap Wireless Pressure Transducer
Millicore DigiVent Pulmonary Air Leakage
Novosense CardioPatch ECG sensor
VTT Heart Monitoring Accelerator