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Tactile sensors

A tactile sensor and sensor technology, applied in the field of tactile sensors, can solve the problems of high cost, tactile sensors without industrial robots, and huge size

Pending Publication Date: 2020-12-18
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, vision-based tactile sensors have not been applied to state-of-the-art industrial robots due to relatively bulky size, high cost, and repeatability issues.

Method used

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Examples

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Embodiment Construction

[0040] The present invention will be described below through detailed description of the embodiments.

[0041] exist Figure 1A, a schematic diagram of a pinhole array-based tactile sensor is shown. The device comprises a reflective layer 1 for illumination reflection, an elastomeric layer 4 on top of which is a marker 2, one or a series of LEDs 3 to provide illumination for imaging, a pinhole-based lens structure 5 and a CMOS (complementary metal oxide Semiconductor) sensor 6. One or a series of LEDs 3 will provide illumination to the elastomeric body 4 and they are located on the side(s) of the elastomeric body 4 .

[0042] In this embodiment, the reflective layer 1 is a flexible layer with high light reflectivity, and its shape can be changed according to external touch. The material of the reflective layer 1 can be silicone resin, parylene C, polyimide and other polymers, and other inorganic materials, as long as it can be deformed by combining with the underlying elasti...

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Abstract

The present disclosure provides a sensing device, a tactile sensing device, and a tactile sensor. The sensing device includes: a photosensitive sensor; a pinhole array structure located on the photosensitive sensor; an elastomer layer positioned on one side, far away from the photosensitive sensor, of the pinhole array structure; a reflecting layer positioned on one side, far away from the pinholearray structure, of the elastomer layer; and a light source located between the reflective layer and the pinhole array structure.

Description

technical field [0001] The present disclosure relates to vision-based tactile sensors, especially for sensing three-dimensional surface deformation and force distribution in contact areas. Background technique [0002] Tactile sensors are currently used in many fields, such as robotics and medical surgery. For example, for a grip-operated system, tactile sensors are necessary to generate effective feedback to maintain a stable grip during movement. [0003] Various types of tactile sensors with different conversion methods, including capacitive, piezoelectric, and piezoresistive, have been widely developed in recent decades. They cover a wide range from micro to macro and have a wide range of applications. However, they lack the capability of high-resolution spatial mapping and three-dimensional measurement due to their high complexity in terms of mechanical structure, readout circuit design, and interface. [0004] Vision-based tactile sensors are flourishing in various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01B11/02G01L1/25
CPCG01B11/24G01B11/02G01L1/25G01L1/247G01L1/241G01L5/166G01L1/242B25J13/084
Inventor 于宏宇王煜陈侠张雅展
Owner THE HONG KONG UNIV OF SCI & TECH
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