TY - JOUR
T1 - A Self-Calibrating Radar Sensor System for Measuring Vital Signs
AU - Huang, Ming Chun
AU - Liu, Jason J.
AU - Xu, Wenyao
AU - Gu, Changzhan
AU - Li, Changzhi
AU - Sarrafzadeh, Majid
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/4
Y1 - 2016/4
N2 - Vital signs (i.e., heartbeat and respiration) are crucial physiological signals that are useful in numerous medical applications. The process of measuring these signals should be simple, reliable, and comfortable for patients. In this paper, a noncontact self-calibrating vital signs monitoring system based on the Doppler radar is presented. The system hardware and software were designed with a four-tiered layer structure. To enable accurate vital signs measurement, baseband signals in the radar sensor were modeled and a framework for signal demodulation was proposed. Specifically, a signal model identification method was formulated into a quadratically constrained ℓ1 minimization problem and solved using the upper bound and linear matrix inequality (LMI) relaxations. The performance of the proposed system was comprehensively evaluated using three experimental sets, and the results indicated that this system can be used to effectively measure human vital signs.
AB - Vital signs (i.e., heartbeat and respiration) are crucial physiological signals that are useful in numerous medical applications. The process of measuring these signals should be simple, reliable, and comfortable for patients. In this paper, a noncontact self-calibrating vital signs monitoring system based on the Doppler radar is presented. The system hardware and software were designed with a four-tiered layer structure. To enable accurate vital signs measurement, baseband signals in the radar sensor were modeled and a framework for signal demodulation was proposed. Specifically, a signal model identification method was formulated into a quadratically constrained ℓ1 minimization problem and solved using the upper bound and linear matrix inequality (LMI) relaxations. The performance of the proposed system was comprehensively evaluated using three experimental sets, and the results indicated that this system can be used to effectively measure human vital signs.
KW - Calibration
KW - Doppler radar
KW - vital sign measurement
UR - http://www.scopus.com/inward/record.url?scp=84929815384&partnerID=8YFLogxK
U2 - 10.1109/TBCAS.2015.2411732
DO - 10.1109/TBCAS.2015.2411732
M3 - Article
C2 - 26011865
AN - SCOPUS:84929815384
VL - 10
SP - 352
EP - 363
JO - IEEE Transactions on Biomedical Circuits and Systems
JF - IEEE Transactions on Biomedical Circuits and Systems
SN - 1932-4545
IS - 2
M1 - 7110401
ER -