Soft Bionic Skin With Touch-Slip and Thermal Perception Using Double-Layer Distributed FBG Sensing Array

Sun, Shu-Ming; He, Shenggang; Han, Yu; Long, Yuheng; He, Zeyin

doi:10.1109/jsen.2022.3143945

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…In the rehabilitation field, advancements in optical fiber sensor technology have introduced new possibilities for tactile detection. By quantifying the effects of temperature, pressure, and slip on the fingers, these sensors can offer comprehensive tactile feedback [ 96 , 97 , 98 , 99 ]. This multi-parameter monitoring assists healthcare professionals in gaining a deeper understanding of patients’ rehabilitation processes, thereby optimizing treatment plans and enhancing the personalization of care.…”

Section: The Application Of Penetrable Optical Fiber Sensors In Finge...mentioning

confidence: 99%

A Review of Wearable Optical Fiber Sensors for Rehabilitation Monitoring

Li,

Wei

et al. 2024

Sensors

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As the global aging population increases, the demand for rehabilitation of elderly hand conditions has attracted increased attention in the field of wearable sensors. Owing to their distinctive anti-electromagnetic interference properties, high sensitivity, and excellent biocompatibility, optical fiber sensors exhibit substantial potential for applications in monitoring finger movements, physiological parameters, and tactile responses during rehabilitation. This review provides a brief introduction to the principles and technologies of various fiber sensors, including the Fiber Bragg Grating sensor, self-luminescent stretchable optical fiber sensor, and optic fiber Fabry–Perot sensor. In addition, specific applications are discussed within the rehabilitation field. Furthermore, challenges inherent to current optical fiber sensing technology, such as enhancing the sensitivity and flexibility of the sensors, reducing their cost, and refining system integration, are also addressed. Due to technological developments and greater efforts by researchers, it is likely that wearable optical fiber sensors will become commercially available and extensively utilized for rehabilitation.

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Section: The Application Of Penetrable Optical Fiber Sensors In Finge...mentioning

confidence: 99%

A Review of Wearable Optical Fiber Sensors for Rehabilitation Monitoring

Li,

Wei

et al. 2024

Sensors

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“…Typically, tactile sensors based on Fiber Bragg Grating (FBG) rely on the stress–strain-induced wavelength shift of the Bragg grating center to obtain various tactile parameters. ,− Currently, this demodulation method is widely used in fiber Bragg grating tactile research, for example: (1) installed on the fingers of robotic hands, giving them the ability to sense and identify objects; (2) installed on arms for large-area tactile sensing. However, this demodulation method is cross-sensitive to the temperature and strain.…”

Section: Introductionmentioning

confidence: 99%

Flexible Arc-Shaped Micro-Fiber Bragg Grating Array Three-Dimensional Tactile Sensor for Fingertip Signals Detection and Human Pulse Monitoring

Chen,

Dong,

Shao

et al. 2024

ACS Appl. Mater. Interfaces

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A flexible arc-shaped micro-Fiber Bragg Grating (mFBG) array three-dimensional tactile sensor for fingertip signal detection and human pulse monitoring is presented. It is based on a three mFBGs array which is embedded in an arc-shaped poly (dimethylsiloxane) (PDMS) elastomer, which can effectively discriminate the normal force, left force, and right force by monitoring the reflected intensity variation of the three mFBGs. Different from the traditional FBG sensors, this sensor measures force by detecting changes in light intensity, effectively avoiding the wavelength cross-sensitivity impact of temperature variations on the sensor performance. This design strategy simplifies the sensor structure, reduces the system complexity and signal interrogation cost, and enhances reliability and practicality. Through systematic experiments, we successfully validated the sensor's superior performance, achieving a minimum detection force of 0.01 N and providing robust data support for practical applications. In addition, the sensor has been used to monitor human pulse accurately. The successful fabrication and experimental validation of this sensor lay a foundation for its widespread application in fields such as robot perception and human vital signal detection.

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“…The overall structure is divided into the contact area and the measurement and perception area, which can effectively detect and recognize the sliding signal. In 2022, Sun S. et al designed a two-layer “cruciform” two-dimensional distributed sensor array [ 19 ], which can effectively analyze and distinguish sliding signals.…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Research of Robot Finger Sliding Tactile Sensor Based on FBG

Guan

Fu²,

Xu³

2022

Sensors

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Aiming at the problem of flexible sliding tactile sensing for the actual grasp of intelligent robot fingers, a double-layer sliding tactile sensor based on fiber Bragg grating (FBG) for robot fingers is proposed in this paper. Firstly, the optimal embedding depth range of FBG in the elastic matrix of polydimethylsiloxane (PDMS) was determined through finite element analysis and static detection experiments of finger tactile sensing. Secondly, the sensor structure is optimized and designed through the simulation and dynamic experiments of sliding sensing to determine the final array structure. Thirdly, the sensing array is actually pasted on the surface of the robot finger and the sensing characteristics testing platform is built to test and analyze the basic performance of the sliding tactile sensor. Then, the sensor array is actually attached to the finger surface of the robot and the sensing characteristics testing platform is built to experiment and analyze the basic performance of the sliding tactile sensor. Finally, a sliding tactile sensing experiment of robot finger grasping is conducted. The experimental results show that the sliding tactile sensor designed in this paper has good repeatability and creep resistance, with sensitivities of 12.4 pm/N, 11.6 pm/N, and 14.5 pm/N, respectively, and the overall deviation is controlled within 5 pm. Meanwhile, it can effectively sense the signals of the robot fingers during static contact and sliding. The sensor has a high degree of fit with the robot finger structure, and has certain application value for the perception of sliding tactile signals in the object grasping of intelligent robot objects.

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Soft Bionic Skin With Touch-Slip and Thermal Perception Using Double-Layer Distributed FBG Sensing Array

Cited by 10 publications

References 28 publications

A Review of Wearable Optical Fiber Sensors for Rehabilitation Monitoring

A Review of Wearable Optical Fiber Sensors for Rehabilitation Monitoring

Flexible Arc-Shaped Micro-Fiber Bragg Grating Array Three-Dimensional Tactile Sensor for Fingertip Signals Detection and Human Pulse Monitoring

Design and Experimental Research of Robot Finger Sliding Tactile Sensor Based on FBG

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