CN102073378B - Tactile reproduction system for pattern mapping - Google Patents
Tactile reproduction system for pattern mapping Download PDFInfo
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- CN102073378B CN102073378B CN2011100002732A CN201110000273A CN102073378B CN 102073378 B CN102073378 B CN 102073378B CN 2011100002732 A CN2011100002732 A CN 2011100002732A CN 201110000273 A CN201110000273 A CN 201110000273A CN 102073378 B CN102073378 B CN 102073378B
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- spring
- casing
- drive block
- tactile
- output drive
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Abstract
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 the like 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
The present invention relates to a kind of system that can the pattern that be used for visual cognition in the external world etc. be converted into tactilely-perceptible, relate in particular to a kind of tactile sense reproduction system that is used for pattern Mapping.
Background technology
For we normal person, our the residing world is colorful, colourful, can be for the blind person, and his world is dark, he can't see anything and any color, brings great inconvenience for his life.In school for defectives; A kind of special Reading card to blind person's design is arranged, and the blind person can be familiar with literal and learning knowledge through touching these Reading cards, but in daily life; The sign that supplies its touch recognition that designs for the blind person is specially but seldom arranged, like station board, road sign, Direction Signs etc.
Summary of the invention
Technical matters to be solved by this invention provides and a kind ofly can convert the pattern that is used for visual cognition etc. in the life into tactilely-perceptible, to make things convenient for blind person's the tactile sense reproduction system that is used for pattern Mapping.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of tactile sense reproduction system that is used for pattern Mapping; Comprise the camera, computer image processing system, mapping controller, a plurality of D/A converter, a plurality of power amplifier and the tactile representation device that connect successively; Described tactile representation device comprises the casing of open upper end; With the polylith dividing plate described casing is separated into m * n space cell in the described casing; Wherein m and n are positive integer, and m >=1, n >=1 and m * n >=2 are provided with piezo actuator and output drive block in each described space cell; The bottom surface of described output drive block and the top of described piezo actuator fit tightly; Be provided with flexible restoring organ between described output drive block and the described casing, the quantity of described D/A converter and power amplifier equates with the quantity of described space cell that all described power amplifier is electrically connected with described piezo actuator.
Described flexible restoring organ comprises fixed bar and spring; The side of described output drive block is provided with through hole; Described fixed bar passes described through hole and is fixedly connected on the described casing, and described spring vertical fixing is arranged between the inner bottom surface of lower surface and described through hole of described fixed bar.
Described spring is positioned at the center of described output drive block.
Be set with sleeve on the described fixed bar, described jacket casing is located on the described spring, and the internal diameter of described sleeve equals or be slightly larger than the diameter of described spring.
The inner bottom surface of described casing is embedded with steel ball, and described piezo actuator vertically is placed on the described steel ball.
Compared with prior art, advantage of the present invention is can convert into tactilely-perceptible such as the pattern that is used for visual cognition through native system, and uses piezo actuator to export displacement in the tactile representation device, and its response speed is fast, and displacement is accurate and low frequency characteristic good; And spring overcoat is provided with sleeve, when spring is compressed, can prevent the spring bending distortion, to guarantee the precise displacement of output drive block; In addition, piezo actuator vertically is placed on the steel ball, piezo actuator is contacted with face face between the tank floor convert a face contact to, can eliminate the gap of piezo actuator bottom and tank floor, exports shift value accurately to guarantee piezo actuator.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the structural representation of tactile representation device of the present invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in the figure, be that example describes with 3 * 3 pattern units:
A kind of tactile sense reproduction system that is used for pattern Mapping; Comprise successively the camera that connects, computer image processing system, mapping controller, nine D/A converters, nine power amplifiers and tactile representation device, tactile representation device comprises the casing 1 of open upper end, with polylith dividing plate 2 casing 1 is separated into 3 * 3 identical space cells in the casing 1; Be provided with piezo actuator 3 and output drive block 4 in each space cell; Each power amplifier is electrically connected with its corresponding piezo actuator 3, and the inner bottom surface of casing 1 is embedded with steel ball 5, and piezo actuator 3 vertically is placed on the steel ball 5; The bottom surface of output drive block 4 and the top of piezo actuator 3 fit tightly; The side of output drive block 4 is provided with through hole 41, and fixed bar 6 passes through hole 41 and fixedly is screwed onto on the casing 1, and vertical fixing is provided with spring 7 between the inner bottom surface of the lower surface of fixed bar 6 and through hole 41; Spring 7 is positioned at the center of output drive block 4; Be set with sleeve 61 on the fixed bar 6, sleeve 61 is set on the spring 7, and the internal diameter of sleeve 61 is slightly larger than the diameter of spring 7.
The principle of work of above-mentioned tactile sense reproduction system is: obtain pattern signal and import in the computer image processing system through camera; Computer image processing system is divided into 3 * 3 pattern units with pattern; And extract the gray-scale value of each pattern unit; Data with gray-scale value pass in the mapping controller then, and the mapping controller is given a plurality of D/A converters through communication interface with data transfer with voltage form again, and D/A converter converts digital quantity to analog voltage signal; And after through connected power amplifier signal being amplified drive voltage signal is passed to each corresponding piezo actuator 3; Each piezo actuator 3 is exported displacement rapidly and accurately, drives upwards action of corresponding with it output drive block 4, realizes the conversion to tactilely-perceptible such as the visual cognition of pattern etc.; When camera did not obtain pattern-information, piezo actuator 3 did not have drive voltage signal, and at this moment, original compressed spring 7 fast driving output drive block 4 resets.
Have particular application as: this system can be applicable to the identification of blind person to station board, road sign, Direction Signs etc., makes things convenient for their trip and life, in addition, and also can be with this system applies in other fields such as car steering trainings.
Claims (1)
1. tactile sense reproduction system that is used for pattern Mapping; It is characterized in that comprising the camera, computer image processing system, mapping controller, a plurality of D/A converter, a plurality of power amplifier and the tactile representation device that connect successively; Described tactile representation device comprises the casing of open upper end, with the polylith dividing plate described casing is separated into m * n space cell in the described casing, and wherein m and n are positive integer; M >=1, n >=1 and m * n >=2; Be provided with piezo actuator and output drive block in each described space cell, the quantity of described D/A converter and power amplifier equates with the quantity of described space cell that all described power amplifier is electrically connected with described piezo actuator; The inner bottom surface of described casing is embedded with steel ball; Described piezo actuator vertically is placed on the described steel ball, and the bottom surface of described output drive block and the top of described piezo actuator fit tightly, and is provided with flexible restoring organ between described output drive block and the described casing; Described flexible restoring organ comprises fixed bar and spring; The side of described output drive block is provided with through hole, and described fixed bar passes described through hole and is fixedly connected on the described casing, and described spring vertical fixing is arranged between the inner bottom surface of lower surface and described through hole of described fixed bar; Described spring is positioned at the center of described output drive block; Be set with sleeve on the described fixed bar, described jacket casing is located on the described spring, and the internal diameter of described sleeve equals or be slightly larger than the diameter of described spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100002732A CN102073378B (en) | 2011-01-04 | 2011-01-04 | Tactile reproduction system for pattern mapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100002732A CN102073378B (en) | 2011-01-04 | 2011-01-04 | Tactile reproduction system for pattern mapping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102073378A CN102073378A (en) | 2011-05-25 |
| CN102073378B true CN102073378B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100002732A Expired - Fee Related CN102073378B (en) | 2011-01-04 | 2011-01-04 | Tactile reproduction system for pattern mapping |
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| Country | Link |
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| CN (1) | CN102073378B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI486922B (en) * | 2013-09-14 | 2015-06-01 | Chunghwa Telecom Co Ltd | Based on Jiugongge 's Blind Braille Input Device and Method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050030292A1 (en) * | 2001-12-12 | 2005-02-10 | Diederiks Elmo Marcus Attila | Display system with tactile guidance |
| CN100580743C (en) * | 2005-09-28 | 2010-01-13 | 赵宇 | Braille display element |
| JP2010170483A (en) * | 2009-01-26 | 2010-08-05 | Mitsumi Electric Co Ltd | Contact rendering device and driving method |
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2011
- 2011-01-04 CN CN2011100002732A patent/CN102073378B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI486922B (en) * | 2013-09-14 | 2015-06-01 | Chunghwa Telecom Co Ltd | Based on Jiugongge 's Blind Braille Input Device and Method |
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| Publication number | Publication date |
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| CN102073378A (en) | 2011-05-25 |
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Granted publication date: 20120704 Termination date: 20150104 |
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