Sterosonic ultrasonic blindman-helping tool
A blind aid and stereo technology, applied in ophthalmology treatment, etc., can solve the problems of blind people's daily life difficulties, sensed objects without three-dimensional outline, and blind people's inconvenient travel, etc., to achieve the effect of convenient daily life, simple structure and low cost
Inactive Publication Date: 2008-06-18
游志军
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Problems solved by technology
[0002] Blind people generally use blind sticks when they go out. The blind stick can only feel the surrounding objects within the length of the blind stick. There is no three-dimensional outline for the sensed objects, which makes the travel of the blind extremely inconvenient and brings difficulties to the daily life of the blind.
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[0011] As shown in the figure, the present invention has a control switch 1, ultrasonic generator 2 and earphone 13, is respectively provided with audio sound generator 11 and 12 in the left and right ear bag of earphone 13, and this stereo ultrasonic blind aid is also provided with Two ultrasonic receivers 3 and 4, the output terminals of the ultrasonic receivers 3 and 4 are respectively connected with filters 5 and 6 for filtering out clutter and retaining the same frequency ultrasonic waves, for converting the frequency of the received ultrasonic signals and delaying them Frequency converters 7 and 8, amplifiers 9 and 10 that generate audio signals, the ultrasonic receivers 3 and 4 are respectively arranged in the left and right ear bags of the earphone 13, and the output ends of the amplifiers 9 and 10 are respectively sounded by wires and audio The filters 5 and 6, the frequency converters 7 and 8 and the amplifiers 9 and 10 are arranged in the case 14. The ultrasonic gen...
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Disclosed is a stereophonic ultrasonic visual aid device, solving the problem that a current walking stick for blind people can only perceive the objects around within the reach of the walking stick and can not sense the solid outline of the objects, which is inconvenient for a blind people when going out. The invention comprises a control switch, an ultrasonic generator and an earphone which is provided with an audio-sounder inside. The invention is characterized in that the stereophonic ultrasonic visual aid device in addition is provided with two ultrasonic receivers; the two ultrasonic receivers are respectively disposed in the left ear and the right ear of the earphone, with the output terminals respectively connected with a filter, a transducer and an amplifier; the output terminals of the amplifier are respectively connected with the audio-sounder through leads; the filter, the transducer and the amplifier are arranged inside a machine box. The invention has the advantages that the invention can enable the blind people to sense the solid outline of the object around through hearing and help the blind people to identify walking directions, thus greatly facilitating the daily life of the blind people. Meanwhile the invention is simple in structure and low in cost and is convenient to use.
Description
technical field [0001] The invention belongs to articles for the blind, in particular to a stereo ultrasonic blind aid. Background technique [0002] Blind people generally use blind sticks when they go out. The blind stick can only feel the surrounding objects within the length of the blind stick. There is no three-dimensional outline for the sensed objects, which makes the travel of the blind extremely inconvenient and brings difficulties to the daily life of the blind. . Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art, to provide a stereo space that can make the blind perceive the surrounding objects, help the blind to identify the walking direction, and greatly facilitate the daily life of the blind. Ultrasonic blind aid. [0004] The present invention is realized like this: it has a control switch, ultrasonic generator and earphone, is respectively provided with audio frequency sounder in the left...
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IPC IPC(8): A61F9/08
Inventor 游志军
Owner 游志军