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Dot matrix type braille dot display touch control screen

A dot-matrix, touch-screen technology, applied in mechanical mode conversion, instruments, computing, etc., can solve problems such as inability to apply to the blind, low use efficiency, and unstable recognition rate, so as to improve reading experience and reduce production costs. , the effect of increasing the refresh rate

Inactive Publication Date: 2017-05-31
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Disadvantages: separation of input and output devices, high cost, relatively low efficiency
[0011] Disadvantages: not suitable for all blind people, unstable recognition rate may easily lead to input errors
[0013] Disadvantages: The existing equipment is not designed for the characteristics of the blind, and it will be inconvenient to use

Method used

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  • Dot matrix type braille dot display touch control screen
  • Dot matrix type braille dot display touch control screen
  • Dot matrix type braille dot display touch control screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Such as image 3 As shown, the system is divided into three modules, which are the core processing module, the underlying drive sensing module, the 4X2 fixed part and the 4X16 non-fixed part. Braille touch cell array composed of two parts. Among them, the embedded processor used by the core processor is the Raspberry Pi 3 generation, which runs the Linux system. Subsequent developers can program it separately to facilitate more in-depth function customization and development. The core processor sends the braille data to be displayed to the next-level ARM processor through the USB protocol, and the ARM processor decodes the data after receiving the data from the core processor, and then converts it into a PWM pulse wave and sends it to the motor drive circuit Drive the dot display unit; while the ARM processor feeds back the touch signal collected by the touch sensing IC combined with the capacitive touch circuit to the core processor. After the core processor receives t...

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Abstract

The invention relates to a dot matrix type braille dot display touch control screen and aims to provide a low-cost and practical integrated braille input / output solution for people with visual disorder. The dot matrix type braille dot display touch control screen comprises 4*16 dot display touch control units, 4*2 fixed braille touch control units, a bottom drive sensing module and a core processing module, wherein each dot display touch control unit comprises six contacts arranged in three rows and two lines, and the whole unit comprises a surface film, a surface material layer, a touch circuit layer, six beads, a slide rod, a guide rail of the slide rod, a motor, a connecting rod and a gear from top to bottom, the six beads are respectively located into six through holes, and the slide rod is provided with a specially-designed circular groove; the four fixed braille touch control units are arranged in a line on the left of the touch control screen, and each fixed braille touch control unit comprises two squares of fixed braille salient dots and comprises a surface film, the fixed braille salient dots, a surface material layer, a touch circuit layer and a bottom mechanical part from top to bottom; a lateral bar and multiple rows of guide bars are arranged on the top surface of the touch control screen.

Description

technical field [0001] The invention relates to a braille touch display device, which uses a dot-matrix screen composed of mechanical transmission and capacitive touch technology. By using the device, blind people can perceive output text and image information and feed back input at the same time. [0002] technical background [0003] Braille is a six-point raised character designed for the blind, who can perceive it through the touch of their hands. Braille input means that the blind use an input device to input Braille. At present, blind people use needle-pricked paper or Braille keyboard input methods when writing. The former is easy to cause injury and inefficient, and the latter cannot be combined with Braille display devices. [0004] Compared with traditional push-button mobile phones, the biggest feature of touch-screen mobile phones is the successful integration of the screen and keyboard, that is, the integration of information input and output. That is, in the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044G06F3/01G06F3/0488
CPCG06F3/016G06F3/0416G06F3/044G06F3/0488G06F2203/014
Inventor 林诗杰赵辉蒋枫薛平李声龙胡再国
Owner SICHUAN UNIV
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