Febus Reidj G. Cruz
ABSTRACT
This paper presents a circuit design which can capture photoplethysmography signal and estimate its peak-to-peak voltage reading with the aid of an Arduino microcontroller. Photoplethysmography is a non-invasive optical technique used to detect blood volume changes in the microvascular bed of tissue. With this technique, common health-related factors like heart rate reading, blood pressure reading, and blood glucose level can be measured. The proposed circuit design uses a CNY70 reflectance photoplethysmography sensor and an SEN-09673 force sensitive resistor to determine the force applied on the finger strap that can be worn on any of the proximal phalanges of the user. An algorithm referred to as Moving Average Filter is applied to estimate the photoplethysmography signal in terms of peak-to-peak voltage.
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Index Terms
- Photoplethysmography Circuit Design for Peak-to-Peak Voltage Monitoring via Arduino Uno with Moving Average Filter
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