Work

MW-PPG Sensor: An on-Chip Spectrometer Approach

Year: 2019

Type: article

Abstract: Multi-wavelength photoplethysmography (MW-PPG) sensing technology has been known to be superior to signal-wavelength photoplethysmography (SW-PPG) sensing technology. However, limited by the availability of sensing detectors, many prior studies can only use conventional bulky and pricy spectrometers as the detectors, and hence cannot bring the MW-PPG technology to daily-life applications. In this study we developed a chip-scale MW-PPG sensor using innovative on-chip spectrometers, aimed at wearable applications. Also in this paper we present signal processing methods for robustly extracting the PPG signals, in which an increase of up to 50% in the signal-to-noise ratio (S/N) was observed. Example measurements of saturation of peripheral blood oxygen (SpO2) and blood pressure were conducted.

Source: Sensors

DOI: 10.3390/s19173698

Authors: Cheng-Chun Chang, Chien-Ta Wu, Byung Il Choi, Tong-Jing Fang

Institutions: National Taipei University of Technology, National Defense Medical Center

Language: English

Topic: Non-Invasive Vital Sign Monitoring

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,824

Funder: Ministry of Science and Technology, Taiwan