Respiratory effort energy estimation using Doppler radar.
Human respiratory effort can be harvested to power wearable biosensors and mobile electronic devices. The very first step toward designing a harvester is to estimate available energy and power. This paper describes an estimation of the available power and energy due to the movements of the torso during breathing, using Doppler radar by detecting breathing rate, torso displacement, torso movement velocity and acceleration along the sagittal movement of the torso. The accuracy of the detected variables is verified by two reference methods. The experimental result obtained from a healthy female human subject shows that the available power from circumferential movement can be higher than the power from the sagittal movement.
Electrical Engineering Department, University of Hawaii at Manoa, Honolulu, HI 96822, USA. ehsan@hawaii.edu
Ehsaneh
E
Shahhaidar
Ehsan
E
Yavari
Jared
J
Young
Olga
O
Boric-Lubecke
Cris
C
Stickley
D000054:Acceleration; D061725:Accelerometry; D004301:Doppler Effect; D005260:Female; D006801:Humans; D055641:Mathematical Concepts; D008954:Models, Biological; D009068:Movement / Q000502:physiology; D011825:Radar; D012119:Respiration; D015656:Respiratory Mechanics / Q000502:physiology*; D060726:Torso; D014159:Transducers; D014939:Work of Breathing / Q000502:physiology