This publication aims to describe the design, implementation, and verification of a fiber-optic wrist sensor based on the Bragg grating (FBG) for monitoring the heart rate (HR) of the human body. One of our primary goals was also to create a sensor suitable for measurements in harsh environments such as magnetic resonance imaging (MRI). For this reason, we used polylactic acid (PLA) material for the encapsulation of Bragg grating itself. This combination results in a sensor solution that is resistant to electromagnetic interference (EMI). Based on their previous agreement, the sensor has been properly and systematically tested based on a group of six volunteers of one sex. The acquired data were then processed and evaluated, using the absolute error (AE), relative error (RE), and its mean. The outcome of this study indicated an RE of 9.07 %, implying promising results and the first step of this study.
This article describes the fiber-optic Bragg grating sensor which is encapsulated by using 3D print and polylactic acid material. This FBG sensor is designed for heart rate monitoring of the human body. In this article, we describe the complete process consisting of creating, encapsulating, and experimental verification of the sensor. This sensor we compared with the conventional ECG monitoring system. Measurement was performed with a group of 5 volunteers in the laboratory conditions. The measured data were compared by the Bland-Altman method.
This paper describes the proposal, manufacture, and overall testing of a portable measuring sensor based on the fiber-optic Bragg grating (FBG). The sensor is made of two-component silicone rubber (ZA 50 LT) and can be used to monitor the density of car traffic in cities at a maximum speed of 60 kph in one lane. The construction of the sensor, which is over 2 m long and 1.8 cm wide, contains optical fiber with FBG encapsulated in a carbon tube and allows the detection of individual vehicle axles. Functional verification of the sensor was performed in real traffic on overall 761 vehicles (various types) with a high detection success rate of 97.19 %.
This article describes the research work in search of an optimized solution for the measurement of compressive force using the detection of the intensity of the optical power coupled into the optical fiber. In the experimental part of the research a product realized by 3D printing was used the outer case of which was made of FLEXFILL 98A material and the inner part was formed by a three-part PETG layer while the middle sensory part was changeable. This model was used to test different shapes of deformation elements in the variable part to find suitable configurations of the deformation plate. A standard 50/125 μm multimode graded index optical fiber was placed in the sensory part. It can be assumed that the results of this research can be used for the design of sensors based on the detection of changes in optical power intensity
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.