14 May 2018 Pre-processing and extraction techniques for vital signs analysis from phonocardiographic-based interferometric fiber-optic sensor
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Abstract
This paper deals with methods for processing signals from an optical interferometer to monitor vital signs (Respiration Rate and Heart Rate). Optical interferometer signals are contaminated by variety of technical and biological artifacts (motion artifacts, hospital/patient-generated noise, etc.). Tested optical sensors are very sensitive, it therefore crucial to reduce such unwanted signals. In this article, a complex application for processing the signals from optical interferometer based on virtual instrumentation was developed. The experiments were conducted on data sensed by optical interferometer using a National Instruments card NI USB-6216 BNC and application in the LabVIEW environment. Frequency selective filters were tested in the experiments. The results obtained by using optical interferometer were statistically compared with the ECG and PCG reference. According to the results, optical interferometers are able to measure both the Respiration and Heart Rate under the given conditions. Unfortunately, the measurement is very difficult to replicate in the hospital environment, which is the primary reason why these methods are not used in clinical practice.
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Radek Martinek, Radek Martinek, Radana Kahankova, Radana Kahankova, Nela Strbikova, Nela Strbikova, Jakub Cubik, Jakub Cubik, Stanislav Kepak, Stanislav Kepak, Marcel Fajkus, Marcel Fajkus, Jan Nedoma, Jan Nedoma, Martin Novak, Martin Novak, Jan Jargus, Jan Jargus, } "Pre-processing and extraction techniques for vital signs analysis from phonocardiographic-based interferometric fiber-optic sensor", Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 106541E (14 May 2018); doi: 10.1117/12.2304540; https://doi.org/10.1117/12.2304540
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