A wearable and fully-textile capacitive sensor based on flat-knitted spacing fabric for human motions detection

Zhao, Boyu; Dong, Zhen; Cong, Honglian

doi:10.1016/j.sna.2022.113558

Cited by 13 publications

(2 citation statements)

References 42 publications

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“…In addition to examining the possibilities of using various technologies and materials, various patterns and structures of capacitance sensors are tested. The authors of [ 12 ] investigate the influence of various structural parameters of the fabric on the mechanical and electrical properties of the sensor and its application in the detection of human movements. The hypothesis assumes that a 3D fabric with an appropriately selected structure can provide excellent mechanical and electrical properties, enabling effective detection of body movements.…”

Section: Introductionmentioning

confidence: 99%

Textronic Capacitive Sensor with an RFID Interface

Pyt,

Skrobacz,

Jankowski-Mihułowicz

et al. 2024

Sensors

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This article presents an innovative combination of textile electrical circuits with advanced capabilities of electronic RFID sensors, indicating the revolutionary nature of the development of textronics, which is used in various areas of life, from fashion to medicine. A review of the literature relating to the construction of textronic RFID identifiers and capacitive textronic sensors is performed. Various approaches to measuring capacity using RFID tags are discussed. This article focuses on presenting the concept of a capacitive sensor with an RFID interface, consisting of a microelectronic part and a textile part. The textile part is based on the WL4007 material, where antennas and capacitive sensors are embroidered using SPARKFUN DEV 11791 conductive thread. The antenna is a half-wave dipole designed to operate at a frequency of 860 MHZ. The microelectronic part is sewn to the textile part and consists of a microcontroller, an RFID-integrated circuit and a coupling loop, placed on the PCB. The embroidered antenna is coupled with a loop on the microelectronic module. This article focuses on presenting various designs of textronic electrodes, enabling various types of measurements. Article presents capacitance measurements of individual sensor electrodes, made using a measuring bridge and a built RFID tag. The sensors’ capacity measurement results are shown.

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Section: Introductionmentioning

confidence: 99%

Textronic Capacitive Sensor with an RFID Interface

Pyt,

Skrobacz,

Jankowski-Mihułowicz

et al. 2024

Sensors

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“…To this end, recent efforts have focused on, for example, pneumatically-actuated devices [7] and highly stretchable strain sensors with engraved microchannels filled with conductive liquids [8] for finger rehabilitation. The demand for flexible sensing technology in smart wearable devices continues to increase and motivates exploration of flexible sensors such as resistive sensors [9,10], capacitive sensors [11,12], piezoelectric sensors [13,14], optical fibers [15,16], and electroactive polymers such as ionic polymer-metal composites (IPMCs) [17,18]. Table 1 summarizes the advantages and disadvantages of available sensor technologies.…”

Section: Introductionmentioning

confidence: 99%

Engineered IPMC sensors: modeling, characterization, and application towards wearable postural-tactile measurement

Nagel,

Fakharian,

Aureli

et al. 2023

Smart Mater. Struct.

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This paper focuses on the modeling and development of engineered ionic polymer-metal composite (eIPMC) sensors for applications such as postural and tactile measurement in mechatronics/robotics-assisted finger rehabilitation therapy. Specifically, to tailor the sensitivity of the device, eIPMCs, fabricated using a polymer-surface abrading technique, are utilized as the sensing element. An enhanced chemoelectromechanical model is developed that captures the effect of the abrading process on the multiphysics sensing behavior under different loading conditions. The fabricated sensors are characterized using scanning electron microscopy imaging and cyclic voltammetry and chronoamperometry. Results show significant improvement in the electrochemical properties, including charge storage, double layer capacitance, and surface conductance, compared to the control samples. Finally, prototype postural-tactile finger sensors composed of different eIPMC variants are created and their performance validated under postural and tactile experiments. The tailored eIPMC sensors show increased open-circuit voltage response compared to control IPMCs, with 7.7- and 4.7-times larger peak-to-peak bending response under postural changes, as well as a 3.2-times more sensitive response under compression during tactile loading, demonstrating the feasibility of eIPMC sensors.

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