TY - GEN
T1 - Investigation of carrier frequency effect on detection performance of Doppler sensor systems for noncontact human vital-signs sensing
AU - Kuo, Hsin Chih
AU - Chuang, Huey-Ru
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Microwave/millimeter-wave Doppler sensor systems with various operating frequency for noncontact human vital-signs sensing have been reported extensively. To investigate the frequency effect on the detection performance of the vital signs, the muscle sphere is used to emulate the human heart organ to compute the scattering field of the incident wave radiated from the Doppler sensor and calculate the radar cross section (RCS) of different frequency. A pig heart is used in the experimental measurement to measure the RCS and compare with the computed value of the spherical muscle sphere at 60 GHz. The receiving power of the Doppler sensor can then be calculated from the radar equation at different frequency. From the theoretical upper bound value of the antenna gain (under the fixed antenna size), by observing the simulated receiving-power comparison, it is found that the Doppler sensor can receive more reflected power (from the spherical muscle sphere) for the higher carrier frequency (up to 60 GHz) which may have a better vital-signs sensing performance. Measured vital signs of a 60-GHz Doppler sensor system of a human subject 2-m away are also demonstrated.
AB - Microwave/millimeter-wave Doppler sensor systems with various operating frequency for noncontact human vital-signs sensing have been reported extensively. To investigate the frequency effect on the detection performance of the vital signs, the muscle sphere is used to emulate the human heart organ to compute the scattering field of the incident wave radiated from the Doppler sensor and calculate the radar cross section (RCS) of different frequency. A pig heart is used in the experimental measurement to measure the RCS and compare with the computed value of the spherical muscle sphere at 60 GHz. The receiving power of the Doppler sensor can then be calculated from the radar equation at different frequency. From the theoretical upper bound value of the antenna gain (under the fixed antenna size), by observing the simulated receiving-power comparison, it is found that the Doppler sensor can receive more reflected power (from the spherical muscle sphere) for the higher carrier frequency (up to 60 GHz) which may have a better vital-signs sensing performance. Measured vital signs of a 60-GHz Doppler sensor system of a human subject 2-m away are also demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=84903288947&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903288947&partnerID=8YFLogxK
U2 - 10.1109/ISMICT.2014.6825209
DO - 10.1109/ISMICT.2014.6825209
M3 - Conference contribution
AN - SCOPUS:84903288947
SN - 9781479948567
T3 - International Symposium on Medical Information and Communication Technology, ISMICT
BT - 8th International Symposium on Medical Information and Communication Technology, ISMICT 2014 - Conference 2014
PB - IEEE Computer Society
T2 - 8th International Symposium on Medical Information and Communication Technology, ISMICT 2014
Y2 - 2 April 2014 through 4 April 2014
ER -