With this your therapist could objectively document your problems and present exact stroke protocols to recover functionality. That is what you expect your therapist to do? Isn't it?
New generation of wearable goniometers for motion capture systems
Journal of NeuroEngineering and Rehabilitation 2014, 11:56
doi:10.1186/1743-0003-11-56
Published: 11 April 2014
Published: 11 April 2014
Abstract (provisional)
Background
Monitoring joint angles through wearable systems enables human posture and gesture
to be reconstructed as a support for physical rehabilitation both in clinics and at
the patient's home. A new generation of wearable goniometers based on knitted piezoresistive
fabric (KPF) technology is presented.
Methods
KPF single-and double-layer devices were designed and characterized under stretching
and bending to work as strain sensors and goniometers. The theoretical working principle
and the derived electromechanical model, previously proved for carbon elastomer sensors,
were generalized to KPF. The devices were used to correlate angles and piezoresistive
fabric behaviour, to highlight the differences in terms of performance between the
single layer and the double layer sensors. A fast calibration procedure is also proposed.
Results
The proposed device was tested both in static and dynamic conditions in comparison
with standard electrogoniometers and inertial measurement units respectively. KPF
goniometer capabilities in angle detection were experimentally proved and a discussion
of the device measurement errors of is provided. The paper concludes with an analysis
of sensor accuracy and hysteresis reduction in particular configurations.
Conclusions
Double layer KPF goniometers showed a promising performance in terms of angle measurements
both in quasi-static and dynamic working mode for velocities typical of human movement.
A further approach consisting of a combination of multiple sensors to increase accuracy
via sensor fusion technique has been presented.
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