Wearable Fluidic Strain Sensor for Human Motion Sensing

Nhu, Chi Tran; Ngoc, An Nguyen; Dau, Van Thanh; Van, Chieu Le; Duc, Trinh Chu; Bui, Tung Thanh

doi:10.1109/sensors47125.2020.9278685

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…They are suitable for specific conditions where traditional sensors cannot work well. A new type of flexible and low-cost fluidic strain sensor has been shown and discussed [6]. It is composed of a silicon tube that contains a mixture of water, sodium chloride 99.5% and glycerin 99%.…”

Section: Determining Specific Kinetic Motion and Movementmentioning

confidence: 99%

Wearable Sensors for Detecting and Measuring Kinetic Characteristics

Huang

Lian

2022

J. Phys.: Conf. Ser.

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Wearable devices play an important role in our daily life. We can use it in the sports area and the medical area. This review uses many articles to introduce how to use different sensors to analyze human kinetic characteristics. This review is divided into three parts. In the first sections, we will introduce the working principle and its calculation method of the different sensors such as IMUs sensors, pressure transducers, etc. The second part will show you some research about using wearable sensors to calculate the joint data and link the data with human movement. These researches can help us stay far away from joint diseases. In conclusion, we give some suggestions about the improvement of wearable devices.

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Section: Determining Specific Kinetic Motion and Movementmentioning

confidence: 99%

Wearable Sensors for Detecting and Measuring Kinetic Characteristics

Huang

Lian

2022

J. Phys.: Conf. Ser.

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“…Commercial pressure and inertial sensors have been applied to detect hand gestures and the arm and leg motions, respectively [11,12]. An ionic liquid-based fluidic strain sensor was developed and worn on a leg and fingers to detect movements [26]. A flexible optical pressure sensor was developed and worn on index finger to detect flexion and extension of it [27].…”

Section: Introductionmentioning

confidence: 99%

Design of Fuzzy Logic Motion Detection Algorithm for the Bracelet Type Sensor Consisting of Conductive Layer-Polymer Composite Film

Park

2022

Polymers

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To improve the motion detection performance of a bracelet-type sensor that uses only two tiny sensor modules developed using carbon-based conductive polymer composite films, a fuzzy-logic algorithm was developed in this study. A polyethylene terephthalate polymer film with a conductive layer composed of carbon paste was used as the integral material utilized for the composite film; a small sensor module composed of mechanical parts mounted on the film was developed to effectively detect the surface resistance variations of the film. A participant wore a bracelet sensor, which consisted of two sensor modules, on their forearm, and the resistance variations of the contact area between the forearm and the sensor modules corresponding to the flexion changes of the surface of the body due to muscle contraction and relaxation were detected. The surface resistance variations of the film were converted to voltage signals, which were used as inputs to the fuzzy logic algorithm to detect four consecutive motions of the forearm. The results demonstrated that the fuzzy-logic algorithm attained an accuracy of 94%. The fuzzy algorithm successfully detected four motions and the resting state of the forearms; moreover, it showed improved performance compared to previous research.

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“…Recently, strain sensors embedding liquid sensing element have been introduced using various types of fluids such as room-temperature liquid metal [ 31 ], electrolytes gels [ 32 ] and ionic liquid [ 33 , 34 , 35 , 36 ]. These liquid-based sensors successfully avoided the polymer relaxation issue and the low signal reading issue possessed by aforementioned solid-based sensors.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Strain Sensor Based on Embedded Ionic Liquid

Zhang

Lowe

Kalra

et al. 2021

Sensors

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We present a simple-structured strain sensor based on a low-cost ionic liquid. The ionic liquid was made of sodium chloride/propylene glycol solution and was embedded in a linear microfluidic channel fabricated using Ecoflex. The proposed sensor is capable of measuring strain up to 100% with excellent repeatability. The highest gauge factor is obtained as 6.19 under direct current excitation and 3.40 under alternating current excitation at 1 kHz. The sensor shows negligible hysteresis and overshoot, and survived 10,000 rapid stretch-release cycles of a 100% peak strain with a minor deviation in the response signal. The sensor can be mounted to different locations on the human body and suits a variety of applications in the field of motion detection, human–machine interface and healthcare monitoring.

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Wearable Fluidic Strain Sensor for Human Motion Sensing

Cited by 4 publications

References 16 publications

Wearable Sensors for Detecting and Measuring Kinetic Characteristics

Wearable Sensors for Detecting and Measuring Kinetic Characteristics

Design of Fuzzy Logic Motion Detection Algorithm for the Bracelet Type Sensor Consisting of Conductive Layer-Polymer Composite Film

A Flexible Strain Sensor Based on Embedded Ionic Liquid

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