Layered electromagnetic braille display device and braille reader

Abstract

The invention discloses a delaminated electromagnetic braille alphabet display device and a braille alphabet reader. The braille alphabet display device consists three layers of braille alphabet display modules and a touchpad; the braille alphabet display module in each layer comprises five boards and a plurality of contact driving mechanisms for driving braille alphabet contacts to raise and reset; braille alphabet finger-reading cells arranged in one row or many rows are arranged on the touchpad; a plurality of braille alphabet finger-reading cells for displaying braille alphabet characters are arranged in each row of the braille alphabet finger-reading cells; a microprocessor is respectively connected to a braille alphabet translation and conversion module, a voice broadcasting module and a contact controller; the contact controller is connected with the braille alphabet display device to form the braille alphabet reader. The braille alphabet display device provided by the invention utilizes the working principle of electromagnetic induction, is capable of displaying one or many rows of braille alphabet characters and has the advantages of smart structural design, low cost, stable performance, high reliability and capability of refreshing braille alphabets in real time; moreover, the braille alphabet displaying is synchronous to the voice broadcasting, blind people's reading and studying requirements are satisfied and the braille alphabet display device is significant to the society.

Description

technical field [0001] The invention relates to a braille device and a reading machine, in particular to a layered electromagnetic braille display device and a braille reading machine, which are convenient for the visually impaired and amblyopic groups to carry, and are mainly used for reading and learning braille. Background technique [0002] According to the statistics of the World Health Organization in 2010, there are 285 million visually impaired people in the world, of which 39 million are blind and 246 million are low vision. The huge blind population needs more care and support from all walks of life. [0003] Touch reading is fast and highly recognizable, and it is the most important way of reading for the blind. However, the special paper for traditional Braille books is expensive, the production process is complicated, and it takes a long time. Moreover, the number of published Braille books is small, the variety is single, the information lags behind, the amoun...

AI Technical Summary

Problems solved by technology

In 2010, Gu Chunxiao and others from Southeast University used 3×3 semicircular-head stimulating electrodes to stimulate the fingertips of the operator to achieve visual graphic display, but the dynamic range of the electrotactile sense is narrow, and the requirements for the range of electrical stimulation parameters are relatively high. It is difficult, the stimulation parameters are unstable, and often cause tingling sensation

[0007] Most of the above-mentioned research results are still in the principle testing stage of laboratory research, and a small part has been commercialized. However, the price of the commercialized Braille display device is high. At present, the price of a Braille grid (that is, a Braille character) The price is about 100 to 150 US dollars, which means that the price of a 40-frame braille display device is 4,000 to 6,000 US dollars, and an 80-frame braille display device costs 8,000 to 12,000 US dollars

Such an expensive price has seriously hindered the promotion and popularization of Braille display devices, and it is difficult to benefit most of the blind and vulnerable groups. The main reasons are mainly due to the difficulties in research, technical implementation, high R&D costs, high raw material costs, and high processing and manufacturing costs.

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