Garment-Integrated Bend Sensor

Gioberto, Guido; Dunne, Lucy E.

doi:10.3390/electronics3040564

Cited by 5 publications

(5 citation statements)

References 12 publications

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“…[ 242 ] For example, zigzag stitches have been used to attach fiber‐based sensors to base fabrics through a technique called couching, [ 243 ] and overlock stitches have been used to form strain sensors because they stretch readily due to their looping structures. [ 244 ] Additionally, overlock stitches maintain the stretchability of knit fabrics chosen to define fluidic actuation profiles. [ 14 ] Except in the case of embroidery, stitching is predominately performed by human operators and therefore suffers from resolution issues as discussed previously.…”

Section: Textile Science and Technology For The Future Of Wearable Romentioning

confidence: 99%

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Textile Technology for Soft Robotic and Autonomous Garments

Sánchez¹,

Walsh²,

Wood³

2020

Adv Funct Materials

180

123

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Textiles have emerged as a promising class of materials for developing wearable robots that move and feel like everyday clothing. Textiles represent a favorable material platform for wearable robots due to their flexibility, low weight, breathability, and soft hand‐feel. Textiles also offer a unique level of programmability because of their inherent hierarchical nature, enabling researchers to modify and tune properties at several interdependent material scales. With these advantages and capabilities in mind, roboticists have begun to use textiles, not simply as substrates, but as functional components that program actuation and sensing. In parallel, materials scientists are developing new materials that respond to thermal, electrical, and hygroscopic stimuli by leveraging textile structures for function. Although textiles are one of humankind's oldest technologies, materials scientists and roboticists are just beginning to tap into their potential. This review provides a textile‐centric survey of the current state of the art in wearable robotic garments and highlights metrics that will guide materials development. Recent advances in textile materials for robotic components (i.e., as sensors, actuators, and integration components) are described with a focus on how these materials and technologies set the stage for wearable robots programmed at the material level.

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Section: Textile Science and Technology For The Future Of Wearable Romentioning

confidence: 99%

“…Further implementations explored the use of an overlock stitch in which a conductive yarn was placed in either the upper or lower looper, illustrating this method could carry over to other stretchable self‐intersecting stitches. [ 244 ]…”

Section: Textile Sensors For Wearable Robotsmentioning

confidence: 99%

Textile Technology for Soft Robotic and Autonomous Garments

Sánchez¹,

Walsh²,

Wood³

2020

Adv Funct Materials

180

123

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“…Gioberto & Dunne (2014) [9] introduced the characterization of a novel garment-integrated stitched sensor response to bends and fabric folds with different morphology (the kind of unconstrained folding that is seen in garments during body movement) and explored the influence of the characteristics of the fabric substrate on the sensor response. The repeatability, accuracy, and relations observed in controlled scenarios under different conditions show the ability of the sensor to detect bending effectively, while preserving wearer comfort, garment aesthetics, and ease of production.…”

Section: Research On Flexible Strain Sensors For Ambient Human Movement Monitoringmentioning

confidence: 99%

Evaluation of Joint Motion Sensing Efficiency According to the Implementation Method of SWCNT-Coated Fabric Motion Sensor

Cho

Yang

Lee

2020

Sensors

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The purpose of this study was to investigate the effects of the shape and attachment position of stretchable textile piezoresistive sensors coated with single-walled carbon nanotubes on their performance in measuring the joint movements of children. The requirements for fabric motion sensors suitable for children are also identified. The child subjects were instructed to wear integrated clothing with sensors of different shapes (rectangular and boat-shaped), attachment positions (at the knee and elbow joints or 4 cm below the joints). The change in voltage caused by the elongation and contraction of the fabric sensors was measured for the flexion-extension motions of the arms and legs at 60°/s (three measurements of 10 repetitions each for the 60° and 90° angles, for a total of 60 repetitions). Their reliability was verified by analyzing the agreement between the fabric motion sensors and attached acceleration sensors. The experimental results showed that the fabric motion sensor that can measure children’s arm and leg motions most effectively is the rectangular-shaped sensor attached 4 cm below the joint. In this study, we developed a textile piezoresistive sensor suitable for measuring the joint motion of children, and analyzed the shape and attachment position of the sensor on clothing suitable for motion sensing. We showed that it is possible to sense joint motions of the human body by using flexible fabric sensors integrated into clothing.

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“…Many research teams are striving hard in this area using flex sensors and fiber optics sensors [21][22][23][24], smart belts mainly fabricated with a flex sensor and continually measure deformation angles. The stitched method is mostly suitable without clothing discomfort and aesthetics, these parameters are essential for lengthy period monitoring and very useful for integrated garment stretch and bend for sensing techniques, activity recognition, and body monitoring purposes [25]. However; there is a minimal level of studies has been carried out in fabricating flex sensor into knitted textile to measure the body motions during statics and kinematics positions especially at substantial angle change of body joint positions [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

A novel flex sensor-based flexible smart garment for monitoring body postures

Abro

Zhang

Chen

et al. 2019

Journal of Industrial Textiles

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Posture monitoring and investigation in wearable technology play a significant role in the analysis of body postures. This study aims to develop a new flexible smart garment realized by stitching flex sensors at different joint positions for sensing flexion angles in static and kinematic motions. Calibration tests were conducted by systematically flexing wrist, elbow, and knee joints, respectively. A male subject then wore the developed flexible smart garment to sense different body postures. The measured data from flex sensors inside the smart garment exhibited immediate response after each joint movement of the male subject. The minimum measurement sensitivities of flex sensors mounted at the knee, elbow, and wrist was 0.94°, 0.8°, and 0.56°, respectively. Measured flexion angle changes were within 80°, 95°, and 140° ranges from knee, elbow, and wrist. Both stand and walk tests at a velocity of 4 km/h indicate that the flexion angles of three joint positions include wrist, elbow, and knee joints can be effectively monitored using the flex sensor–based smart garment. Flex sensor can be employed to monitor body joint movement and future to identify different postures of body joints in practice. The flexible smart garments cannot be washed.

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Garment-Integrated Bend Sensor

Cited by 5 publications

References 12 publications

Textile Technology for Soft Robotic and Autonomous Garments

Textile Technology for Soft Robotic and Autonomous Garments

Evaluation of Joint Motion Sensing Efficiency According to the Implementation Method of SWCNT-Coated Fabric Motion Sensor

A novel flex sensor-based flexible smart garment for monitoring body postures

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