Stability test of the silicon Fiber Bragg Grating embroidered on textile for joint angle measurement

Apiwattanadej, Thanit; Chun, Byung Jae; Lee, Hyub; Li, King Ho Holden; Kim, Young‐Jin

doi:10.1117/12.2269096

Cited by 5 publications

(7 citation statements)

References 20 publications

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“…The male's dynamic calibration experimental data of FBG 12 are connected by a blue dashed line with a slope of −0.00457. His verification experimental data of FBG 12 are expressed as blue asterisks and they are fitted linearly by a blue solid line with slope Compared with the literatures [16,17], the SPF drives the FBGs to stretch (contract) axially. This method can protect the FBG from breaking…”

Section: Experiments Of Wrist Pitchingmentioning

confidence: 99%

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Optical fiber Bragg grating based sensing system of flexible wearable smart sleeve for tracking human arm joint movements

Feng

Wang

Liu

et al. 2023

Meas. Sci. Technol.

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Optical fiber Bragg sensor (FBG) has great potential in the field of flexible wearable device for tracking human gestures. Due to the different human size, different wearable tensions cause errors inevitably during tracking joint movements. We have designed a flexible wearable smart sleeve with four heads of FBG and spandex polyurethane fibers. The spandex polyurethane fibers sewed with the Optical fiber Bragg sensor (FBG) has great potential in the field of flexible wearable device for tracking human gestures. Due to the different human size, different wearable tensions cause errors inevitably during tracking arm joint movements. We have designed a flexible wearable smart sleeve with four heads of FBG and spandex polyurethane fibers. The spandex polyurethane fibers sewed with the flexible fabric sleeve convert the elbow yawing, wrist pitching and rolling into the axial strain of FBG. The measuring system has been developed to deduce the personalized sensitivity by a dynamic calibration method. For a male and a female, the dynamic calibration, verification and tracking tests were carried out. From the male’s experimental data, the relative errors between the verification sensitivity and the personalized sensitivity are 1.93%, 5.85% and 7.16%, and the average relative errors between the tracking sensitivity and the personalized sensitivity are 7.09%, 5.58% and 2.52%, respectively. And from the data of the female’s experiment, the relative errors between the verification sensitivity and the personalized sensitivity are 0.25%, 5.0% and 6.75%, and the average relative errors between the tracking sensitivity and the personalized sensitivity are 0.99%, 5.56% and 6.95%, respectively. The experimental data have showed this wearable smart sleeve and the measuring system work well. The research results can be used to develop FBG sensing system of monitoring joint movements for different human size on-line.

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Section: Experiments Of Wrist Pitchingmentioning

confidence: 99%

“…In [16], the Bragg grating was arranged in the region of the finger joint, which would make FBG break easily. Apiwattanadej et al [17] sewed an FBG sensor in a stretchable fabric for elbow movement measurement. They tested the stability of the FBG sensor on supportive textiles during the exercise and the cleaning process with water.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber Bragg grating based sensing system of flexible wearable smart sleeve for tracking human arm joint movements

Feng

Wang

Liu

et al. 2023

Meas. Sci. Technol.

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“…FBG is a hot optical fiber sensor inscribed virtually on any fiber. FBG arrays can be easily fabricated, with spacing ranging from several kilometers down to the millimeter [ 22 , 29 , 37 , 48 , 67 , 68 , 69 , 70 , 71 ]. FBG sensors are used in many industrial areas to monitor physical variables such as temperature, pressure, etc.…”

Section: Wearable Fiber Bragg Grating Sensorsmentioning

confidence: 99%

“…Wearable devices based on fiber optic sensors have proven to be effective and comfortable solutions for monitoring vital signs (ankle [ 23 , 28 , 29 , 30 , 31 , 32 , 33 ], blood [ 22 , 34 , 35 ], spine [ 36 ], heart rate [ 22 , 37 , 38 , 39 , 40 ], breathing [ 10 , 22 , 41 , 42 , 43 , 44 ], shoulder and neck [ 45 ], joint angle [ 21 , 29 , 30 , 37 , 42 , 46 ], etc.). The characteristics of optical fibers allow them to be embedded in textiles such as T-shirts and elastic belts for sensing applications, enabling respiratory monitoring [ 47 ].…”

Section: Introductionmentioning

confidence: 99%

Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Zhang

Wang

Zheng

et al. 2023

Sensors

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Wearable optical fiber sensors have great potential for development in medical monitoring. With the increasing demand for compactness, comfort, accuracy, and other features in new medical monitoring devices, the development of wearable optical fiber sensors is increasingly meeting these requirements. This paper reviews the latest evolution of wearable optical fiber sensors in the medical field. Three types of wearable optical fiber sensors are analyzed: wearable optical fiber sensors based on Fiber Bragg grating, wearable optical fiber sensors based on light intensity changes, and wearable optical fiber sensors based on Fabry–Perot interferometry. The innovation of wearable optical fiber sensors in respiration and joint monitoring is introduced in detail, and the main principles of three kinds of wearable optical fiber sensors are summarized. In addition, we discuss their advantages, limitations, directions to improve accuracy and the challenges they face. We also look forward to future development prospects, such as the combination of wireless networks which will change how medical services are provided. Wearable optical fiber sensors offer a viable technology for prospective continuous medical surveillance and will change future medical benefits.

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“…Alternatively, for joint angle measurement, FBGs can be employed. In a report of Apiwattanadej et al ., FBG sensors were supported by a stretchable textile so as to monitor elbow movement . In this system, the Bragg wavelength is monitored and correlated to the strain that is applied to the fibre.…”

Section: Solutions and Applicationsmentioning

confidence: 99%

Polymer optical fibres in healthcare: solutions, applications and implications. A perspective

Quandt

Boesel

Rossi

2018

Polymer International

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Polymer optical fibres are increasingly being used for medical applications, e.g. as wearable devices for diagnostics or therapeutics. Due to the multitude of applications and the corresponding restrictions and prerequisites, the properties of these optical fibres are fine-tuned to their specific application. Regarding wearables and continuous, unobtrusive long-term monitoring, a very low burden is reached when the integration into textiles is complete and the wearer's comfort is ensured. Here, we discuss a selection of recent solutions within wearable photonic sensors. Integration processes are highlighted so as to provide insight for further development. Finally, implications of long-term monitoring are discussed including data mining. The effect of knowing one's vitals on society is highlighted as a relevant influence on medical care. If ubiquitous monitoring were realized for a high percentage of the population, concerns can arise regarding the long-term reliability of photonic sensors as well as ethical use of patient data.

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Stability test of the silicon Fiber Bragg Grating embroidered on textile for joint angle measurement

Abstract: Stability test of the silicon Fiber Bragg Grating embroidered on textile for joint angle measurement.

Cited by 5 publications

References 20 publications

Optical fiber Bragg grating based sensing system of flexible wearable smart sleeve for tracking human arm joint movements

Optical fiber Bragg grating based sensing system of flexible wearable smart sleeve for tracking human arm joint movements

Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Polymer optical fibres in healthcare: solutions, applications and implications. A perspective

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