Learning the signatures of the human grasp using a scalable tactile glove

Zheng, Feng Bin

doi:10.1088/1674-4926/40/7/070202

Cited by 11 publications

(3 citation statements)

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“…5a that the demodulation time (T r = 2 ms) of the quadrature demodulator, which is sufficient to meet the requirements for fast and accurate amplitude measurement. Therefore, the FC-AIMS platform demonstrates a superior wide pressure range and high time resolution compared to existing artificial skin arrays based on TDM [8,19,32,33,44] and spike trains coding [10,23,28] (Fig. 5b).…”

Section: Spatiotemporal Resolution Of the Fc-aims Platformmentioning

confidence: 99%

“…One of the main reasons is that most sensor arrays are currently based on Time Division Multiplexing (TDM) for data acquisition, which measures the individual capacitance between row and column electrodes in sequence in each measurement cycle [7,[29][30][31] . Despite the benefits of the serial readout feature of TDM, which enables shared conductor routing between multiple sensors and simplifies the wiring of large arrays [32,33] , it also suffers from drawbacks such as readout delay [34,35] , crosstalk and signal disturbance because of the continuous channel switching [36,37] , and complex sequential channel switching circuits [38,39] . Existing solutions to improve the performance of TDMbased I-skin array include use of high-speed electronic components [40] , optimization of switch sequence [38] , and the circuit with compensation algorithm [19] .…”

Section: Introductionmentioning

confidence: 99%

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Iontronic Array with a Frequency-Coding Architecture for Transient Tactile Perception

Wang,

Li,

Yang

et al. 2023

Preprint

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The artificial iontronic tactile system is a device that mimics the prompt and transient response of biological skin to mechanical stimuli, thereby enabling robots to perceive their environment. However, the surge in the number of tactile units in space constrains the data acquisition bandwidth when based on individual addressing, impeding the fast transient tactile sensing capability of the iontronic skin (I-skin). Here, we report a Frequency Coded Artificial Ion Mechanoreceptor Skin (FC-AIMS). Equipped with a fast-sensing readout circuit based on frequency coding, an array (8×8) of artificial ion mechanoreceptor (AIM) with high sensitivity (> (1.2 kPa)^-1) and ultra-wide pressure range (120 Pa - 2 MPa) successfully achieve real-time readout (within 2 ms) for the external dynamic spatiotemporal mechanical stimuli. Moreover, the parallel measurement mechanism of the circuit effectively mitigates crosstalk between sensing units. We have demonstrated that combination of proposed device and deep learning has a broad application prospect in intelligent human-machine interaction and real-time dynamic robotic manipulation.

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Section: Spatiotemporal Resolution Of the Fc-aims Platformmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Iontronic Array with a Frequency-Coding Architecture for Transient Tactile Perception

Wang,

Li,

Yang

et al. 2023

Preprint

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“…designed a highly sensitive and flexible capacitive TS with a double-ply core–sheath structure fabric to attain high sensitivity (0.039711 kPa –1 ) and rapid response (≈100 ms), while the susceptible span was still limited (<0.85 kPa) . Despite remarkable progress in sensitivity enhancement, most sensors show a linear response only under low pressures, while the sensitivity is significantly reduced while increasing the pressure level. − One approach to attain high sensitivity over a broad pressure span is to adopt a multilayer geometry to increase the contact area and distribute the exerted stress to all layers. For instance, Ma et al developed a novel capacitive sensor by utilizing a conventional continuous core spinning approach with conductive reduced graphene oxide/carbon nanotube fibers to produce core–sheath yarns with a helical structure that are both stretchable and conductive.…”

Section: Introductionmentioning

confidence: 99%

All-Fabric Tactile Sensors Based on Sandwich Structure Design with Tunable Responsiveness

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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Capacitance tactile sensors (TSs) based on electrode distance and contact area variations have been notably employed for various purposes due to their magnificent stress sensitivity. Nevertheless, developing TSs with tunable responsiveness in a broad pressure interval is crucial owing to the trade-off between sensitivity and linear identification range. Herein, a TS including Ag-coated Velcro and spacer fabric is constructed, where its sandwich framework provides a sizable expansion in compression deformation ability. In addition, a multilayered framework composed of the stacked TS from self-adhesive Velcro provides more contact area and significant deformation for stress distribution, further balancing the sensitivity, sensing range, and linearity for smart garment application. By utilizing the overlaid selection of multilayer structures, the all-textile TS demonstrates outstanding sensitivity with a one-layer structure (0.036 kPa–1) over a pressure range of 0.2–5 kPa and retains a sensitivity of 0.002 kPa–1 in a four-layer structure over a wide pressure range of 0.2–110 kPa, representing a significant improvement compared to previous results. The sensor possesses excellent performance in terms of response speed (104 ms), repeatability (10,000 cycles), and flexibility. In addition, its significant applications, involving human motion detection, pliable keyboards, and human–computer interface, are successfully shown. Based on the facile and scalable manufacturing approach, a suitable procedure is presented to construct next-generation wearable electronics.

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Flexible Supercapacitor Integrated Systems

He,

Cao

et al. 2024

Adv Materials Technologies

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There is a pressing need for flexible integrated systems owing to the swift progress of flexible electronics. Apart from flexibility, flexible supercapacitor (FSC) integrated systems exhibit certain characteristics like rapid charge–discharge rates, high power density, and excellent cycling stability, which makes them a promising candidate to serve as a vital component in flexible electronics. In this context, an in‐depth overview of recent progress in FSC‐integrated systems, including their design of structure, materials, fabrication techniques, and applications, is offered. On the basis of the current progress, the existing challenges and future prospects are also outlined and discussed.

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Learning the signatures of the human grasp using a scalable tactile glove

Cited by 11 publications

References 0 publications

Iontronic Array with a Frequency-Coding Architecture for Transient Tactile Perception

Iontronic Array with a Frequency-Coding Architecture for Transient Tactile Perception

All-Fabric Tactile Sensors Based on Sandwich Structure Design with Tunable Responsiveness

Flexible Supercapacitor Integrated Systems

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