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Related Concept Videos

Design Example01:23

Design Example

574
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
574

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Related Experiment Video

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A Tactile Automated Passive-Finger Stimulator TAPS
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Fingertip Fiber Optical Tactile Array with Two-Level Spring Structure.

Jelizaveta Konstantinova1, Agostino Stilli2, Kaspar Althoefer3

  • 1Advanced Robotics @ Queen Mary (ARQ), Faculty of Science and Engineering, Queen Mary University of London, London E1 4NS, UK. j.konstantinova@qmul.ac.uk.

Sensors (Basel, Switzerland)
|October 14, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a novel optical fiber fingertip force sensor for enhanced object manipulation. The miniature sensor accurately detects both light and high forces, improving grasping reliability for diverse objects.

Keywords:
force sensinggraspingtactile sensing

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Area of Science:

  • Robotics
  • Biomedical Engineering
  • Materials Science

Background:

  • Reliable grasping and manipulation depend on tactile perception.
  • Existing sensors may have limitations in measuring a wide range of forces.
  • Advanced tactile sensing is crucial for robotic and prosthetic applications.

Purpose of the Study:

  • To design and develop an integrated fingertip force sensor using an optical fiber approach.
  • To create a sensor system capable of detecting both light and high forces for versatile object grasping.
  • To investigate design configurations for an improved force sensing element measurement range.

Main Methods:

  • An optical fiber-based approach where applied forces modulate light intensity.
  • Integration of four sensing elements forming a tactile array on a fingertip.
  • Utilizing a hybrid sensing structure with a stiff linear and flexible ortho-planar spring for two-level displacement.
  • Investigating design configurations to enhance the measurement range of individual force sensing elements.

Main Results:

  • Development of a miniature tactile fingertip sensor.
  • The sensor system effectively perceives light contact forces during initial grasp stages.
  • The sensor accurately measures higher forces encountered during tight grasps.
  • Demonstrated capability to support grasping of a broad range of objects, both hard and soft.

Conclusions:

  • The developed optical fiber fingertip sensor offers a promising solution for advanced tactile perception.
  • The sensor's ability to measure a wide force range enhances grasping reliability and object manipulation.
  • This technology has potential applications in robotics, prosthetics, and human-computer interaction.