Title :
A flexible capacitive pressure sensor array for pulse diagnosis
Author :
Jen-Yu Peng ; Lu, Michael S-C
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Pulse diagnosis is one of major methods used in traditional Chinese medicine to evaluate a patient´s health conditions. Development of a pulse diagnosis apparatus can lead to modernization and advancement of the field by providing more objective and accurate evaluations. This study aims at demonstrating real-time pulse measurement by using the developed flexible capacitive pressure sensors. A 5 × 5 sensor array of 0.75 cm × 1 cm in size was implemented by using flexible printed circuit boards and integrated with CMOS (complementary metal oxide semiconductor) switched-capacitor readout circuits. The sensing membrane has a 1.2-mm diameter and a 6-μm electrode gap. The measured average output sensitivity was 1.57 mV/mmHg. Real-time pulse measurement has been successfully demonstrated.
Keywords :
CMOS integrated circuits; biomedical electrodes; biomedical electronics; biomedical measurement; biomedical transducers; capacitive sensors; flexible electronics; membranes; patient diagnosis; pressure sensors; printed circuits; pulse measurement; readout electronics; sensor arrays; switched capacitor networks; CMOS switched-capacitor readout circuit; Chinese medicine; complementary metal oxide semiconductor; flexible capacitive pressure sensor array; flexible printed circuit board; patient health condition evaluation; pulse diagnosis apparatus; real-time pulse measurement; sensing membrane; Arrays; CMOS integrated circuits; Capacitance; Electrodes; Pulse measurements; Semiconductor device measurement; Sensors;
Conference_Titel :
Frequency Control Symposium (FCS), 2014 IEEE International
Conference_Location :
Taipei
DOI :
10.1109/FCS.2014.6859889
