Low-power system-on-chip implementation for respiratory rate detection and transmission.
Recent biosensors can measure respiratory rate non-invasively, but limits patient mobility or requires regular battery replacement. Respiratory effort, which can scavenge mW, may power the sensor, but requires minimal sensor power usage. This paper demonstrates feasibility of respiratory rate measurement by using a comparator instead of ADC. A low-power system-on-chip can implement respiratory rate detection and wireless data transmission with a total power consumption under 82 µW. This approach produces significant power savings, and transmission uses under 30% of total power consumption.
University of Hawaii at Manoa, Honolulu, HI 96822, USA. brysonep@hawaii.edu
Bryson
B
Padasdao
Roxanne
R
Yee
Olga
O
Boric-Lubecke
D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation*; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D015203:Reproducibility of Results; D056152:Respiratory Rate / Q000502:physiology*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013147:Spirometry / Q000295:instrumentation*; D059015:Wireless Technology / Q000295:instrumentation*