TY  - JOUR
PY  - 2009//
TI  - Pulse wave sensor for non-intrusive driver's drowsiness detection
JO  - Conference proceedings - IEEE engineering in medicine and biology society
A1  - Hu, Shan
A1  - Bowlds, Ryan L.
A1  - Gu, Ye
A1  - Yu, Xun
SP  - 2312
EP  - 2315
VL  - 2009
IS  - 
N2  - This research proposes a PVDF film pulse wave sensor for use in driver's drowsiness detection. The sensor non-intrusively measures heart pulse wave from driver's palm and an adaptive filter is employed to cancel the measurement noise aroused by the changing of gripping force. Experimental results show clear pulse wave signals can be obtained. Two-hour driving simulation is performed for drowsiness detection tests. The low frequency to high frequency (LF/HF ratio) is calculated from power spectrum density (PSD) of subjects' heart rate time series. The LF/HF ratio shows decreasing trends as subjects go from awake to drowsy.<p />  <p>Language: en</p>
LA  - en
SN  - 1557-170X
UR  - http://dx.doi.org/10.1109/IEMBS.2009.5335036
ID  - ref1
ER  -