| Title |
A Study of PPG Wave and Pulse Measurement on Radial Artery Using Digital Potentiometer and Exponentially Weighted Moving Average Filter |
| Authors |
정인복(Jung, In-Bok) ; 김경호(Kim, Kyung-Ho) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.7.962 |
| Keywords |
PPG ; digital potentiometer ; EWMA filter(exponentially weighted moving average filter) ; Radial artery |
| Abstract |
In this paper, through a digital potentiometer and exponentially weighted moving average filter, pulse and PPG waveform measurable device was fabricated in radial artery. If this device is not proper about signal size in analog part, MCU can judge easily by adjusted amplification through digital potentiometer, using exponentially weighted moving average filter is able to filter out more clear value of ADC. I presumed pulse rate as value of measuring time between point of maximum contraction from sensing signal in radial artery of wrist. Therefore, this means can measure stable pulse rate and PPG waveform, finger as well as radial artery, whether signal size of each person is different finger as well as radial artery. |