Optical Fiber Sensor Based on Plastic Optical Fiber and Smartphone for Measurement of the Breathing Rate

In the diagnosis of respiratory diseases, it is necessary to have a wearable device capable of measuring the breathing rate. We propose a sensor based on the integration of a smartphone with a plastic optical fiber (POF); the system behaves as an all-fiber sensor, using the flashlight as the source...

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Bibliographic Details
Published in:IEEE sensors journal 2019-05, Vol.19 (9), p.3282-3287
Main Authors: Aitkulov, Arman, Tosi, Daniele
Format: Article
Language:English
Subjects:
Biomedical optical imaging
Breathing
breathing rate analysis
Cameras
Connectors
fiber optic sensors
Flashlights
intensity modulation
Luminous intensity
Measuring instruments
Optical fibers
Optical sensors
Optical variables measurement
Periodic variations
Plastic optical fiber (POF)
POF sensors
Respiratory diseases
Sensors
smartphone
Smartphones
Three dimensional printing
Wearable technology
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Summary:In the diagnosis of respiratory diseases, it is necessary to have a wearable device capable of measuring the breathing rate. We propose a sensor based on the integration of a smartphone with a plastic optical fiber (POF); the system behaves as an all-fiber sensor, using the flashlight as the source and the camera as a photodetector, and a 3D-printed connector to perform light coupling. The method of intensity modulation is used to detect the breathing rate. The ubiquitousness of smartphones and the low cost of POF make the proposed sensor a viable alternative to standard devices. The proposed configuration has been calibrated and then experimentally validated. The results are displayed in both the time and frequency domains to extract the information about the periodicity of breathing.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2019.2894834