Design of a fast capacitance sensing circuit for 16× 16 sized sensor array

Wang, Zheng; Liu, Xu; Zhang, Zihan; Li, Juzhe

doi:10.1109/icta50426.2020.9332070

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…In addition, the platform has broad universality for electronic skin arrays. The TDM-based sensor array achieved a high density of capacitive pixels by measuring the capacitance between row and column electrodes in sequence in each measurement cycle; however, the highly dense TDM capacitor array suffers the readout delay and signal crosstalk because of the continuous channel switching and time sequence control, and its time resolution is limited to 100 Hz [8,10,38,39] . Meanwhile, with the increase of the number of tactile sensing units, the time delay of the TDM-based tactile system would be more obvious, which restricts the development of high spatiotemporal artificial skin.…”

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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Ultrafast readout, crosstalk suppression iontronic array enabled by frequency-coding architecture

Li,

Yang,

Zhang

et al. 2024

npj Flex Electron

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The development of iontronic skin (I-skin) capable of ultrafast sensing in a wide pressure range, comparable to human skin, is of paramount importance for intelligent robotics. However, this remains a major challenge due to the lack of iontronic array architectures that can achieve ultrafast readout and crosstalk-free under large capacitance response generated within a wide pressure range. Here, we report a frequency-coding architecture of artificial ion mechanoreceptor skin (AIM-skin) that can provide a universal mode of iontronic array sensing and bypass the dependence of complex integrated back-end interface electronics. Notably, the successful implementation of orthogonal frequency coding in the AIM-skin with high sensitivity and ultrawide pressure range achieve ultrafast parallel readout for the spatiotemporal mechanical stimuli. Furthermore, the parallel zero-potential mechanism (PZPM) of the architecture effectively mitigates electrical crosstalk between sensing units. We have demonstrated that combhination 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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Design of a column-parallel SAR/SS two-step hybrid ADC for sensor arrays

Wang

Wan

et al. 2021

2021 IEEE 15th International Conference on Anti-Counterfeiting, Security, and Identification (ASID)

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Design of a fast capacitance sensing circuit for 16× 16 sized sensor array

Cited by 3 publications

References 5 publications

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

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

Ultrafast readout, crosstalk suppression iontronic array enabled by frequency-coding architecture

Design of a column-parallel SAR/SS two-step hybrid ADC for sensor arrays

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