Tests and further development of a wireless body area network system
Jim Ryberg · 2011
This is a master thesis of which content is tests and development of an existing Wireless Body Area Network (WBAN) prototype. The prototype is a part of the Time and Resource Demanding Control with Surveillance of an Individual’s Status (TRIS) project at the Swedish Defence Research Agency (FOI). The purpose of the TRIS project is to investigate the possibilities of developing a system concept for a decision support system for monitoring of an individual’s status. The purpose of this thesis is to support the TRIS project in its aim to deliver a proof of concept prototype with all the main requirements of a final WBAN system product. The aim of the thesis is to on an already existing WBAN system prototype reduce the energy consumption, make it more userfriendly and flexible and gain information of the system properties by performing tests. The thesis is divided into system tests and system development. From the system tests it has been shown that the ZigBee sensor nodes has communication coverage when the system is worn by a monitored person and that the batteries last for eight hours. It has also been shown that it is possible to perform activity classification on a monitored person wearing the WBAN system. After system development a user of the system now can give commands to the WBAN system as a step to make the system more user friendly and flexible. The commands can be given via settings placed in a file at the remote server or by sending SMS containing settings to the personal server. Furthermore, system adaption has been implemented in order to save energy by reducing the transmitted amount of data. The WBAN system has the possibility to only transmit new GPS positions if the GPS position has changed. Finally local data processing of the accelerometer data has been implemented, also with the purpose to save energy by reducing the transmitted data.