This work presents the design and implementation of a wireless body area
network based on Bluetooth Low Energy (BLE) which enables the integration of
multiple sensor nodes into a smartphone-based system in order to monitor the
posture of cyclists. The wireless posture monitoring system presented in this
chapter obtains the orientation in space of each body segment in which the sensor
nodes are placed and calculates the trunk angle, the knee angle and the angle of
inclination of the road. This system collects raw sensor data from accelerometers,
magnetometers and gyroscopes and sends the data via BLE to an Android
smartphone, which plays the role of central station and performs the data
processing concerning the posture calculation. This chapter describes the
development of the hardware and software of the sensor nodes, which are based
on the CC2540 BLE system-on-chip, as well as the development of the Android
application. Experimental results concerning the measurement of the posture of a
cyclist are provided in order to validate the implementation.This work has been supported by FCT (Fundação para a Ciência e
Tecnologia) in the scope of the project: UID/EEA/04436/2013.info:eu-repo/semantics/publishedVersio
