Design of an Oximeter Based on LED-LED Configuration and FPGA Technology

Sensors

Radovan Stojanovic¹ 

[1] Faculty of Electrical Engineering, University of Montenegro, Cetinjski put b.b. Podgorica, 81000, Montenegro

关键词: photoplethysmography;    light emitting diode;    sensor;    oxygen saturation;    FPGA;   

DOI  :  10.3390/s130100574

来源: mdpi

【 摘 要 】

A fully digital photoplethysmographic (PPG) sensor and actuator has been developed. The sensing circuit uses one Light Emitting Diode (LED) for emitting light into human tissue and one LED for detecting the reflectance light from human tissue. A Field Programmable Gate Array (FPGA) is used to control the LEDs and determine the PPG and Blood Oxygen Saturation (S_pO₂). The configurations with two LEDs and four LEDs are developed for measuring PPG signal and Blood Oxygen Saturation (S_pO₂). N-LEDs configuration is proposed for multichannel S_pO₂ measurements. The approach resulted in better spectral sensitivity, increased and adjustable resolution, reduced noise, small size, low cost and low power consumption.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.