Three-dimensional electro-tactile epidermal electronic system for braille reading

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...

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.

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