Title :
A CMOS-based tactile sensor for continuous blood pressure monitoring
Author :
Kirstein, K.-U. ; Sedivy, J. ; Salo, T. ; Hagleitner, C. ; Vancura, T. ; Hierlemann, A.
Author_Institution :
Phys. Electron. Lab., Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
A monolithic integrated tactile sensor array is presented; it is used to perform non-invasive blood pressure monitoring of a patient. The advantage of this device compared to a hand cuff based approach is the capability of recording continuous blood pressure data. The capacitive, membrane-based sensor device is fabricated in an industrial CMOS-technology combined with post-CMOS micromachining. The capacitance change is detected by a ΣΔ-modulator. The modulator is operated at a sampling rate of 128 kS/s and achieves a resolution of 12 bits with an external decimation filter and an OSR of 128.
Keywords :
CMOS integrated circuits; array signal processing; biosensors; blood pressure measurement; capacitive sensors; delta-sigma modulation; medical signal processing; micromachining; monolithic integrated circuits; patient monitoring; signal sampling; tactile sensors; CMOS sensor; capacitance change; capacitive sensor; continuous blood pressure monitoring; decimation filter; delta sigma modulator; membrane-based sensor; micromachining; monolithic integrated sensor array; noninvasive blood pressure monitoring; sampling rate; sensor array; tactile sensor; Biomedical monitoring; Blood pressure; Capacitance; Capacitive sensors; Micromachining; Patient monitoring; Sampling methods; Sensor arrays; Tactile sensors; Textile industry;
Conference_Titel :
Design, Automation and Test in Europe, 2005. Proceedings
Print_ISBN :
0-7695-2288-2
DOI :
10.1109/DATE.2005.4
