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Article

A Frequency Modulation-Based Taxel Array: A Bio-Inspired Architecture for Large-Scale Artificial Skin

Department of Electronic and Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UK
Academic Editor: Biswanath Samanta
Sensors 2021, 21(15), 5112; https://doi.org/10.3390/s21155112
Received: 21 June 2021 / Revised: 13 July 2021 / Accepted: 24 July 2021 / Published: 28 July 2021
(This article belongs to the Section Sensors and Robotics)
This work introduces an array prototype based on a Frequency Modulation (FM) encoding architecture to transfer multiple sensor signals on a single wire. The use case presented adopts Hall-effect sensors as an example to represent a much larger range of sensor types (e.g., proximity and temperature). This work aims to contribute to large area artificial skin systems which are a key element to enhance robotic platforms. Artificial skin will allow robotic platforms to have spatial awareness which will make interaction with objects and users safe. The FM-based architecture has been developed to address limitations in large-scale artificial skin scalability. Scalability issues include power requirements; number of wires needed; as well as frequency, density, and sensitivity bottlenecks. In this work, eight sensor signals are simultaneously acquired, transferred on a single wire and decoded in real-time. The overall taxel array current consumption is 36 mA. The work experimentally validates and demonstrates that different input signals can be effectively transferred using this approach minimizing wiring and power consumption of the taxel array. Four different tests using single as well as multiple stimuli are presented. Observations on performances, noise, and taxel array behaviour are reported. The results show that the taxel array is reliable and effective in detecting the applied stimuli. View Full-Text
Keywords: artificial skin; modular robotics; tactile sensing artificial skin; modular robotics; tactile sensing
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MDPI and ACS Style

Assaf, T. A Frequency Modulation-Based Taxel Array: A Bio-Inspired Architecture for Large-Scale Artificial Skin. Sensors 2021, 21, 5112. https://doi.org/10.3390/s21155112

AMA Style

Assaf T. A Frequency Modulation-Based Taxel Array: A Bio-Inspired Architecture for Large-Scale Artificial Skin. Sensors. 2021; 21(15):5112. https://doi.org/10.3390/s21155112

Chicago/Turabian Style

Assaf, Tareq. 2021. "A Frequency Modulation-Based Taxel Array: A Bio-Inspired Architecture for Large-Scale Artificial Skin" Sensors 21, no. 15: 5112. https://doi.org/10.3390/s21155112

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