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A 3D electrotactile skin electronics system for Braille reading

An electronic system and three-dimensional electrical technology, applied in educational tools, teaching aids, instruments, etc., can solve the problems of unstable stimulation parameters, inability of subjects, and high production costs, and achieve improved reading speed, fast reading speed, and improved use. rate effect

Active Publication Date: 2019-11-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above research, the reader for the blind based on electrotactile sense has high requirements on the range of electric stimulation parameters, and generally the stimulation electrodes will move correspondingly with the small movements of the subjects during stimulation, resulting in unstable stimulation parameters, accompanied by The subject's tingling sensation
And the above researches all need human hands to touch the device to form a sense of touch, so that the subjects cannot freely release their hands to do other things
And the existing blind readers are also accompanied by a series of problems such as difficult processing and high production cost.

Method used

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  • A 3D electrotactile skin electronics system for Braille reading
  • A 3D electrotactile skin electronics system for Braille reading
  • A 3D electrotactile skin electronics system for Braille reading

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0028] Such as figure 1 As shown, only three groups of electrode pairs are shown in the figure, and the system includes multiple groups of electrode pairs arranged in parallel, wherein,

[0029] Each electrode pair includes two upper and lower electrode pairs, and each electrode pair includes a positive electrode 1, a negative electrode 2, and a power supply 3, and currents are passed into the ...

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Abstract

The invention belongs to the field of epidermal electronics, and discloses a three-dimensional electro-tactile epidermal electronic system for braille reading. The system comprises a plurality of groups of electrode pairs arranged in parallel, each group of electrode pairs comprises an upper electrode pair and a lower electrode pair, each electrode pair comprises a positive electrode, a negative electrode and a power supply, currents are introduced into the upper electrode pairs and the lower electrode pairs separately, the upper electrode pairs and the lower electrode pairs generate electricfields separately, the electric fields generated by the upper electrode pairs and the lower electrode pairs interfere with each other to form interference signals, the multiple interference signals formed by the multiple groups of electrode pairs correspond to a braille character, and braille reading is realized through the stimulation of the multiple interference signals to the skin, wherein thefrequencies of the currents introduced into the different groups of electrode pairs are different, and the frequencies of the currents introduced into the upper electrode pair and the lower electrodepair in the same group of electrode pairs are also different. According to the system, a blind person can read freely in any state, the reading speed is high, the resolution ratio is high, and the reading capability of the blind person can be effectively improved.

Description

technical field [0001] The invention belongs to the field of skin electronics, and more specifically relates to a three-dimensional electrotactile skin electronics system for braille reading. Background technique [0002] With the development of Braille readers, in addition to the traditional way of reading through physical touch, many new methods have been added for blind people to read. Anderson T and others from Sandia National Laboratory in the United States have developed a Braille device that allows the blind to feel fingertip vibrations, which is realized by direct contact with the fingertips through an electromagnetically driven probe array; Kajimoto et al., University of Tokyo A SmartTouch system is proposed, which mainly collects human visual information through light sensors and converts the information into tactile information. The Braille display they design is presented in the form of an electrode array, and the longitudinal distance between the electrodes is 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B21/00
CPCG09B21/004
Inventor 黄永安周莹王攸华白云昭
Owner HUAZHONG UNIV OF SCI & TECH
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