Heart Rate Monitoring Sensor Based on Singlemode-Multimode-Singlemode Fiber

Irawati, Ninik; Hatta, Agus Muhamad; Yhuwana, Y. G. Y.; Sekartedjo,

doi:10.1007/s13320-019-0572-7

Cited by 12 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Assuming that there are two groups of sensors for the same measurement point, the two groups of sensors first use the adaptive weighting method to perform data fusion on their respective measured values. The fused values are X 1 , X 2 , respectively, and the corresponding mean square errors are σ 1 , σ 2 [18,19].…”

Section: Improved Adaptive Weighting Algorithmmentioning

confidence: 99%

Complex Structure of Braid in Fiber Art Creation with Multisensor IoT Technology

Wang

2022

Journal of Sensors

View full text Add to dashboard Cite

Fiber-fabric composites have the characteristics of lighter texture, higher strength, higher damage resistance, better toughness, and flexibility than laminated composites, but their complex structures have not been well studied. This paper is aimed at study the complex structure of woven fabrics in fiber art creation based on multisensor Internet of Things technology and at studying the impact of its composite material mechanical properties. In this paper, it is proposed to use glass fibers and carbon fibers to weave the required structural preforms in a two-dimensional braiding machine and then use the obtained preforms and epoxy resin to prepare three-dimensional two-dimensional braided composite materials with different structures through a molding process. The composites were tested in tension, bending, and compression to obtain data and their failure modes, and the data were compared to obtain correlations. The experimental results in this paper showed that through the tensile, bending, and compression tests of the three kinds of hybrid structure braided composites, the tensile properties of the glass fiber braided composites decreased by about 77%; the influence of angle on the bending properties of carbon fiber braided composites has the largest downward trend of 63%. Two-dimensional biaxial and two-dimensional triaxial preforms are made by weaving glass fiber and carbon fiber, and the angle deviation is basically kept within 2.2%.

show abstract

Section: Improved Adaptive Weighting Algorithmmentioning

confidence: 99%

Complex Structure of Braid in Fiber Art Creation with Multisensor IoT Technology

Wang

2022

Journal of Sensors

View full text Add to dashboard Cite

show abstract

“…For instance, MMI sensors have been applied to biomedical situations only in a few instances. Besides the above-mentioned cardiac monitor [ 32 ], MMI sensors have been used to monitor breathing based on bending losses [ 82 ], and to carry out immunoassays based on changes in the effective RI [ 83 ]. In addition, although MMFs have been used in conjunction with plasmonic structures since some time ago [ 84 , 85 , 86 ], we noticed that the typical configuration involves a primitive measurement of the transmitted intensity through the fiber link.…”

Section: Discussionmentioning

confidence: 99%

“…After these optimizations and implementations of sensitivity enhancement mechanisms, the new reports focused more on the applications rather than proof-of-concept demonstrations. For instance, in recent reports, MMI vibration sensors were used to detect partial discharges in high-power electrical machinery [ 31 ] and monitor the heart rate [ 32 ].…”

Section: Mmi-based Fiber-optic Sensorsmentioning

confidence: 99%

Optical Sensing Using Fiber-Optic Multimode Interference Devices: A Review of Nonconventional Sensing Schemes

Guzmán-Sepúlveda

Guzmán-Cabrera

Castillo-Guzman

2021

Sensors

View full text Add to dashboard Cite

We review fiber-based multimode interference (MMI) devices with a particular focus on optical fiber-based sensing applications. The present review complements a recently published, extensive review where the sensing of conventional physical variables such as refractive index, temperature, displacement, and strain was covered. This review focuses on MMI fiber sensors for nonconventional physical variables, including mechanical, electromagnetic, chemical, and optical, covering around fifteen years of work in the field. Finally, by the end of this paper, we also review some new trends of MMI-based schemes based on polymer fibers, for wavelength-locking applications, for retrieving the thermo-optic coefficient of liquid samples, and for measuring the dynamics of complex fluids.

show abstract

“…With an increasing number of wearable devices being used in heart rate monitoring, industrial robots, and medical electronic monitoring, flexible sensors with superior performance have developed rapidly [ 1 , 2 , 3 , 4 ]. Generally speaking, the working mechanisms of common pressure sensors include the piezoresistive effect, capacitance effect, and resistance effect [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Vertical Graphene-Based Pressure Sensor Using PECVD at a Low Temperature

et al. 2022

View full text Add to dashboard Cite

Flexible pressure sensors have received much attention due to their widespread potential applications in electronic skins, health monitoring, and human–machine interfaces. Graphene and its derivatives hold great promise for two-dimensional sensing materials, owing to their superior properties, such as atomically thin, transparent, and flexible structure. The high performance of most graphene-based pressure piezoresistive sensors relies excessively on the preparation of complex, post-growth transfer processes. However, the majority of dielectric substrates cannot hold in high temperatures, which can induce contamination and structural defects. Herein, a credibility strategy is reported for directly growing high-quality vertical graphene (VG) on a flexible and stretchable mica paper dielectric substrate with individual interdigital electrodes in plasma-enhanced chemical vapor deposition (PECVD), which assists in inducing electric field, resulting in a flexible, touchable pressure sensor with low power consumption and portability. Benefitting from its vertically directed graphene microstructure, the graphene-based sensor shows superior properties of high sensitivity (4.84 KPa−1) and a maximum pressure range of 120 KPa, as well as strong stability (5000 cycles), which makes it possible to detect small pulse pressure and provide options for preparation of pressure sensors in the future.

show abstract

Heart Rate Monitoring Sensor Based on Singlemode-Multimode-Singlemode Fiber

Cited by 12 publications

References 27 publications

Complex Structure of Braid in Fiber Art Creation with Multisensor IoT Technology

Complex Structure of Braid in Fiber Art Creation with Multisensor IoT Technology

Optical Sensing Using Fiber-Optic Multimode Interference Devices: A Review of Nonconventional Sensing Schemes

Preparation of a Vertical Graphene-Based Pressure Sensor Using PECVD at a Low Temperature

Contact Info

Product

Resources

About