Key result
A simple low-cost multimode optical fiber sensor embedded in cloth fabric was theoretically analyzed and experimentally validated for tracking changes in cardiovascular vital signs.
Why the study?
Continuous noninvasive measurement of vital bio-signs is important for evaluating physiological condition and health monitoring, prompting the development of a simple low-cost sensor embedded in fabric to track cardiovascular changes.
A novel fabric-integrated multimode optical fiber sensor offers a potential low-cost, noninvasive method for continuous monitoring of cardiovascular vital signs.
May enable unobtrusive vital sign monitoring via smart textiles; hypothesis-generating and requires prospective trials before clinical use.
Continuous noninvasive measurement of vital bio-signs, such as cardiovascular parameters, is an important tool in evaluation of the patient's physiological condition and health monitoring. Based on new enabling technologies, continuous monitoring of heart and respiration rate, pulse wave velocity and blood pressure have been investigated, advanced and reflected in numerous papers published in recent years. In this paper, we introduce a new technique for noninvasive sensing of vital bio-signs based on a multimode optical fiber sensor that can be integrated into a fabric. The sensor consists of a laser, optical fiber, video camera and computer. Its operation is based on tracking of point-wise intensity variations on speckle patterns caused by interference of the light modes within the fiber subjected to deformation. The paper contains theoretical analysis and experimental validation of the proposed scheme. The main goal is to advance a simple low-cost sensor embedded in a cloth fabric to track changes in the cardiovascular condition of the wearer.
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Bennett et al. (2020) studied Cardiovascular condition. Fabric-integrated multimode optical fiber sensor was evaluated on Tracking of vital bio-signs (heart and respiration rate, pulse wave velocity, blood pressure). A simple low-cost multimode optical fiber sensor embedded in cloth fabric was theoretically analyzed and experimentally validated for tracking changes in cardiovascular vital signs.
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