Plastic optical fiber respiration sensor based on in‐fiber microholes

Ahn, Dohyun; Park, Young June; Shin, Jong‐Dug; Lee, Jongmin; Park, Jaehee

doi:10.1002/mop.31524

Cited by 9 publications

(4 citation statements)

References 16 publications

(26 reference statements)

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“…First, a rectangular hole was formed in the POF using an inexpensive drilling machine (SMC HD-280) and a micro-drill bit (NEO Technical System). (21) Subsequently, silver paste was applied on both sides of a small-sized PDLC film for preparing electrodes. Then, two copper meshes were bonded on the silver paste area on both sides of the PDLC film using epoxy.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Voltage Sensor Based on a Plastic Optical Fiber with a Rectangular Hole

Seo¹,

Prabowo²,

Park³

2021

Sensors and Materials

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In this paper, we present an AC voltage sensor based on a plastic optical fiber (POF) with a rectangular hole filled with a polymer-dispersed liquid crystal (PDLC) film. The dimensions of the rectangular hole and PDLC film used in the experiment were approximately 2 × 0.65 mm 2 and 20 × 0.6 × 0.2 mm 3 , respectively. The root-mean-square (RMS) amplitude of AC voltage at 60 Hz from 0 to 80 V was measured using this sensor. The transmittance of this sensor was a nonlinear function of the applied voltage. In the approximate linear region from 8 to 23 V, the sensitivity of this sensor was approximately 0.017 V −1 . The results show that the proposed voltage sensor can be used to measure the RMS amplitude of AC voltage.

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Section: Experiments and Resultsmentioning

confidence: 99%

Voltage Sensor Based on a Plastic Optical Fiber with a Rectangular Hole

Seo¹,

Prabowo²,

Park³

2021

Sensors and Materials

Self Cite

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“…For better sensitivity and linearity of traditional MBF sensors, recent studies suggest that they can be combined with CRFs, such as U-shaped POFs or D-shaped POFs . Some studies used the methods of punching multiple microholes in the POF or connecting POFs with a silicon tube, of which the essence is to further enhance the optical power attenuation of the MBF. Therefore, such schemes require a trade-off between sensitivity and reliability, avoiding high sensitivity with poor service life.…”

Section: Pulmonary Functionmentioning

confidence: 99%

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

et al. 2022

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Recent advances in the Medical Internet of Things (MIoT) and big data enable a prospering platform for pervasive healthcare and facilitate the transformation from hospital-centered to human-centered healthcare. Wearable devices as human interfaces provide first-hand data and real-time monitoring, which are key technologies in the MIoT. Several remarkable surveys have been conducted to summarize the recent progress in wearable sensors and systems for the MIoT and pervasive medicine. However, few have focused on wearable optical sensing (WOS) technologies, which is an emerging sensing modality in wearable devices. WOS can achieve high precision, high compatibility, high anti-interference, and low motion artifacts for human vital signal acquisition, which are particularly useful in special scenarios such as intensive care units (ICUs). These technologies can also be integrated with smart fabrics or mobile computing for out-of-hospital healthcare. This work provides the first literature review of WOS for pervasive medicine. We aim to systematically summarize the emerging WOS technologies in the MIoT for disease diagnosis and health monitoring. Specifically, this review covers the technical bases and design principles of major WOS technologies and their application domains for monitoring and treatment. We also discuss the opportunities and challenges, especially in the COVID-19 outbreak.

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“…Other researchers show good characteristics for the plastic optical fiber of respiration sensor with the Fiber Bragg Grating (FBG) system placed on the back [8] and also in the breast costume (textile) embedded with a sinusoidal configuration [9]. All reported studies show complicated fabrication, high cost, and low output voltage range [2,[7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Polymer Optical Fiber-Based Respiratory Sensors: Various Designs and Implementations

et al. 2019

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This research discusses the polymer optical fiber sensor for respiratory measurements. The infrared LED that produces light will propagate along the polymer optical fiber which will be received by the phototransistor and the differential amplifier. The output voltage in the form of an analog signal will be converted to a digital signal by the Arduino Uno microcontroller and displayed on the computer. The polymer optical fiber sensor is installed on the corset using a variety of configuration (straight, sinusoidal, and spiral), placed in the abdomen, and a variety of positions (abdomen, chest, and back) using only a spiral configuration. While doing the inspiration, the stomach will be enlarged so that the optical fiber sensor will have strain. The strain will cause loss of power, the resulting light intensities received by the phototransistor are reduced, and the output voltage on the computer decreases. The result shows that the highest voltage amplitudes were in the spiral configuration placed in the abdominal position for slow respiration measurements with the highest range, sensitivity, and resolution which are 0.119 V, 0.238 V/s, and 0.004 s, respectively. The advantages of our work are emphasized on measurement system simplicity, low cost, easy fabrication, and handy operation and can be connected with the Arduino Uno microcontroller and computer.

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Plastic optical fiber respiration sensor based on in‐fiber microholes

Cited by 9 publications

References 16 publications

Voltage Sensor Based on a Plastic Optical Fiber with a Rectangular Hole

Voltage Sensor Based on a Plastic Optical Fiber with a Rectangular Hole

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

Polymer Optical Fiber-Based Respiratory Sensors: Various Designs and Implementations

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