Tactile reproduction system for pattern mapping
A technology of tactile reproduction and pattern, applied in the field of tactile reproduction system of pattern mapping, can solve the problems of designing touch-recognized signs, few blind people, unable to see, etc., achieves good low-frequency characteristics, prevents bending deformation, and responds quickly. Effect
Inactive Publication Date: 2012-07-04
NINGBO UNIV
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Problems solved by technology
[0002] For us normal people, the world we live in is colorful and colorful, but for the blind, his world is dark, and he cannot see anything or any color, which brings great joy to his life. big inconvenience
In schools for the disabled, there is a kind of literacy cards specially designed for the blind. The blind can recognize words and learn knowledge by touching these literacy cards. Signs, such as stop signs, road signs, guide signs, etc.
Method used
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[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0013] As shown in the figure, take the 3×3 pattern unit as an example for illustration:
[0014] A tactile reproduction system for pattern mapping, comprising sequentially connected cameras, a computer image processing system, a mapping controller, nine D / A converters, nine power amplifier circuits and a tactile reproduction device, the tactile reproduction device includes an upper opening box 1, the box 1 is divided into 3×3 identical space units by a plurality of partitions 2 in the box 1, each space unit is provided with a piezoelectric actuator 3 and an output drive block 4, each A power amplifier circuit is electrically connected with the corresponding piezoelectric actuator 3, the inner bottom surface of the box body 1 is embedded with a steel ball 5, the piezoelectric actuator 3 is vertically placed on the steel ball 5, and the bottom ...
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The invention discloses a tactile reproduction system for pattern mapping, which is characterized by comprising a camera, a computer image processing system, a mapping controller, a plurality of digital / analog (D / A) converters, a plurality of power amplification circuits and a tactile reproduction device connected in turn, wherein the tactile reproduction device comprises a box body, the upper end of which is open; and the box body is partitioned into m*n spatial units by using a plurality of partition boards, a piezoelectric executor and an output driving block are arranged in each spatial unit, the bottom surface of the output driving block is tightly jointed with the top of the piezoelectric executor, an elastic resetting mechanism is arranged between the output driving block and the box body, and the power amplification circuits are electrically connected with the piezoelectric executors. The tactile reproduction system has the advantages that: patterns of visual cognition and thelike can be converted into tactile perception through the system; the piezoelectric executors for outputting displacement in the tactile reproduction device have high response speed, accurate displacement and good low-frequency property; and because a sleeve is sleeved outside a spring and when the spring is compressed, bending deformation of the spring can be prevented to ensure accurate displacement of the output driving blocks.
Description
technical field [0001] The invention relates to a system capable of converting external patterns for visual cognition into tactile perception, in particular to a tactile reproduction system for pattern mapping. Background technique [0002] For us normal people, the world we live in is colorful and colorful, but for the blind, his world is dark, and he cannot see anything or any color, which brings great joy to his life. Big inconvenience. In schools for the disabled, there is a kind of literacy cards specially designed for the blind. The blind can recognize words and learn knowledge by touching these literacy cards. Signs, such as stop signs, road signs, guide signs, etc. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a tactile reproduction system for pattern mapping that can convert patterns used for visual cognition in daily life into tactile perception to facilitate blind people. [0004] The technical s...
Claims
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IPC IPC(8): G06F3/01G09B21/00
Inventor 李国平梁晓崔玉国章达众
Owner NINGBO UNIV