標題: Centralized State Sensing Using Sensor Array on Wearable Device
作者: Lee, Eugene
Hsu, Tsu-Jui
Lee, Chen-Yi
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Sensor array;wearable device;centralized filter;photoplethysmography
公開日期: 1-一月-2019
摘要: Signal acquisition from the wrist using wearable device is usually corrupted by noise, sometimes up to a level where the noise completely dominates the signal. In this paper, we use the acquisition of photoplethysmography (PPG) signal as an example to demonstrate our proposed algorithm implemented on a sensor array. To increase the chances of acquiring clean PPG signal, we develop a uniform linear sensor array located above the radial artery. We also develop a wearable device to integrate our sensor array and our proposed algorithm. We propose centralized state sensing (CSS), a centralized algorithm suited to our sensor array, to increase the efficiency in multi sensor estimation. To support our proposed algorithm, we use heart rate estimation as an example and compare it with the estimation of a single sensor and the statistical mean of the estimation of multiple sensors. Experimental results demonstrate that our proposal achieve a reduction in mean absolute error of 26.8%, compared to the estimation result obtained using the average of the estimation of all sensors. Operating on a 80 MHz processor, our algorithm introduces a 8 ms overhead, making it highly suitable for wearable devices.
URI: http://hdl.handle.net/11536/152959
ISBN: 978-1-7281-0397-6
ISSN: 0271-4302
期刊: 2019 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
起始頁: 0
結束頁: 0
顯示於類別:會議論文