Krigslund, Rasmus1; Popovski, Petar3; Pedersen, Gert Frølund3; Dideriksen, Jakob Lund5; Farina, Dario7; Dosen, Strahinja7
1 The Faculty of Engineering and Science (TECH), Aalborg University, VBN2 Department of Electronic Systems, The Technical Faculty of IT and Design, Aalborg University, VBN3 Antennas, propagation and radio networking, The Technical Faculty of IT and Design, Aalborg University, VBN4 Department of Health Science and Technology, The Faculty of Medicine, Aalborg University, VBN5 Center for Sensory-Motor Interaction, The Faculty of Medicine, Aalborg University, VBN6 The Faculty of Medicine, Aalborg University, VBN7 unknown
Although there are several existing methods for human motion capture, they all have important limitations and hence there is the need to explore fundamentally new approaches. Here we present a method based on a Radio Frequency IDentification (RFID) system with passive Ultra High Frequency (UHF) tags placed on the body segments whose kinematics is to be captured. Dual polarized antennas are used to estimate the inclination of each tag based on the polarization of the tag responses. The method has been validated experimentally for the shank and thigh in the sagittal plane during treadmill walking. The reference joint angles for the validation were obtained by an optoelectronic system. Although the method is in its initial phase of development, the results of the validation are promising and show that the movement information can be extracted from the RFID response signals.
I E E E Transactions on Biomedical Engineering, 2013, Vol 60, Issue 5, p. 1453-1457