CN111768679A

CN111768679A - Braille reading device

Info

Publication number: CN111768679A
Application number: CN201910262396.XA
Authority: CN
Inventors: 吴坚; 陈韦彤
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-10-13

Abstract

The present disclosure relates to a braille reading device, including: the display device comprises a driving layer, a wire layer, a flexible film, a display control part and a plurality of transmission columns, wherein the wire layer and the flexible film are sequentially arranged above the driving layer, and the driving part is arranged above the driving layer; a plurality of first through holes and a plurality of wires which correspond to each driving part respectively are arranged on the wire layer; the plurality of transmission columns are positioned between the flexible film and the driving layer and positioned in the corresponding first through holes; the display control part is connected with the plurality of wires and used for determining a driving part to be powered to supply power from the plurality of driving parts according to the braille to be displayed; the driving part deforms under the condition of being electrified to jack up the transmission column above, the flexible thin film is extruded by the jack-up transmission column, and Braille convex points are generated on the flexible thin film, so that the flexible thin film displays Braille. The device provided by the embodiment of the disclosure has the advantages of low cost, small volume and portability, and easy replacement of parts in the device by a user after the parts are worn.

Description

Braille reading device

Technical Field

The present disclosure relates to the field of electronic technology, and more particularly, to a braille reading device.

Background

Braille is also called braille and raised letter, and is a letter designed for the blind and sensed by the touch of the blind. Braille was created by the french man louyi braille in 1824. The application scenes of the braille are very wide, for example, when the elevator is taken, the corresponding braille exists below the number corresponding to the floor of the elevator, the corresponding braille mark is arranged at the entrance of the public toilet, the book read by the blind at ordinary times is used for acquiring information by the braille in the book, and the braille mark is also contained in the lower right corner of the RMB used by people at ordinary times, so that the braille mark not only can help the blind to know the face value of the coin, but also has a certain anti-counterfeiting function.

Because of the indispensable special uses of braille, it is necessary to customize the design and processing for braille of various contents. Due to the particularity of the braille, in the related art, the manufacturing process of the braille books is complicated, and the braille books are generally formed by manufacturing different combinations of salient points on paper through a braille plate, a braille machine, a braille printer and the like, so that the manufactured braille is thick and complicated, is not easy to recycle, and the manufacturing cost of each braille book is very high. In the related art, there is also an electronic braille reading device, which is expensive in manufacturing cost and not easy to carry, and due to the fact that the device utilizes the principles of mechanical transmission or pneumatics and the like, the device is large in size, easy to wear and difficult to repair after being worn.

Disclosure of Invention

In view of this, the present disclosure proposes a braille reading device.

According to an aspect of the present disclosure, there is provided a braille reading device, the device comprising: a driving layer, a wire layer, a flexible film, a display control component and a plurality of transmission columns,

the wire layer and the flexible film are sequentially arranged above the driving layer, and a plurality of driving parts are arranged on the driving layer;

the wire layer is provided with a plurality of first through holes corresponding to each driving part respectively and a plurality of wires contacted with each driving part respectively;

the plurality of transmission columns are positioned between the flexible film and the driving layer, positioned above the corresponding driving parts and positioned in the first through holes;

the display control part is connected with the plurality of conducting wires and used for determining a driving part to be powered according to the braille to be displayed, and the driving part to be powered is powered through the corresponding conducting wire;

the driving part deforms under the condition of being electrified to jack up the transmission column above, the flexible thin film is extruded by the jacked transmission column, and Braille convex points are generated on the flexible thin film, so that the flexible thin film displays Braille.

For the above apparatus, in one possible implementation manner, the apparatus further includes:

the fixing layer is positioned between the flexible film and the wire layer, a plurality of second through holes corresponding to the first through holes are formed in the fixing layer, the transmission columns are positioned in the corresponding first through holes and the second through holes respectively, and the fixing layer is used for limiting the moving direction of the transmission columns.

In one possible implementation manner, a plurality of protrusions corresponding to each transmission column are respectively arranged on one surface of the flexible film close to the wire layer, the plurality of protrusions are embedded in the flexible film,

the driving part deforms under the condition of being electrified to jack up the transmission column above, the jack-up transmission column extrudes the corresponding bulge on the flexible film, and Braille convex points are generated on the flexible film, so that the flexible film displays Braille.

For the device, in a possible implementation manner, the shape of the transmission column includes any one of a cylinder and a polygonal column, one end of the transmission column, which is close to the flexible film, is provided with a chamfer, and the transmission columns are of an internal hollow structure.

For the above device, in one possible implementation, the material of the actuation member comprises an electroactive polymer.

With regard to the above-described device, in one possible implementation, each driving member is provided with an electrode for connecting with a lead wire, near the surface of the lead wire layer, and the shape of the electrode includes any one of a circle and a multi-lobe sector.

With respect to the above-described device, in one possible implementation, the device further comprises a housing,

wherein the driving layer, the wire layer, the flexible film, the display control part, and the plurality of driving columns are detachably mounted in the housing.

With the above apparatus, in one possible implementation, the display control part is disposed in the wire layer.

For the above apparatus, in one possible implementation manner, the materials of the driving layer, the wire layer, the flexible film, and the plurality of transmission columns include flexible materials, and the display control component is a flexible device.

The braille reading device provided by the embodiment of the disclosure includes: the display device comprises a driving layer, a wire layer, a flexible film, a display control part and a plurality of transmission columns, wherein the wire layer and the flexible film are sequentially arranged above the driving layer, and the driving layer is provided with a plurality of driving parts; the wire layer is provided with a plurality of first through holes corresponding to each driving part and a plurality of wires contacting each driving part; the plurality of transmission columns are positioned between the flexible film and the driving layer, positioned above the corresponding driving parts and positioned in the first through holes; the display control part is connected with the plurality of wires and used for determining a driving part to be powered according to the braille to be displayed, and supplying power to the driving part to be powered through the corresponding wire; the driving part deforms under the condition of being electrified to jack up the transmission column above, the flexible thin film is extruded by the jack-up transmission column, and Braille convex points are generated on the flexible thin film, so that the flexible thin film displays Braille. The braille reading device provided by the embodiment of the disclosure has the advantages of low cost, small volume and portability, and easy replacement of parts in the device by a user after abrasion.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 shows a block diagram of a Braille reading device according to an embodiment of the present disclosure.

FIG. 2 illustrates a block diagram of a braille reading device according to an embodiment of the disclosure.

FIG. 3 illustrates a block diagram of a single blind spot cell of a braille reading device according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

FIG. 1 shows a block diagram of a Braille reading device according to an embodiment of the present disclosure. As shown in fig. 1, the apparatus includes: a driving layer 11, a wire layer 12, a flexible film 13, a display control member (not shown in the figure), and a plurality of driving columns 14.

Above the driving layer 11 are a wire layer 12 and a flexible film 13 in sequence, and a plurality of driving parts 111 are arranged on the driving layer 11. The wire layer 12 is provided with a plurality of first through holes 121 corresponding to each driving part 111, and a plurality of wires (not shown) contacting each driving part. The plurality of transmission columns 14 are located between the flexible film 13 and the driving layer 11, above the corresponding driving parts 111 and in the first through holes 121. The display control part is connected with the plurality of wires and used for determining a driving part to be powered according to braille to be displayed, wherein the driving part to be powered needs to be powered, and the driving part to be powered is powered through the corresponding wire.

The driving part deforms under the condition of being electrified to jack up the transmission column above, the flexible thin film is extruded by the jack-up transmission column, and Braille convex points are generated on the flexible thin film, so that the flexible thin film displays Braille.

In the embodiment, a blind spot unit is formed by one driving part, the transmission column on the driving part, the driving layer corresponding to the driving part, the wire layer and the flexible film, and a Braille convex point in a blind text is correspondingly realized.

In the present embodiment, the positions and sizes of the transmission columns and the driving parts may be set according to the arrangement of the salient points of the braille, which is not limited by the present disclosure.

In this embodiment, there is a certain clearance between first through-hole and the transmission post to guarantee that the transmission post can reciprocate in first through-hole, form the braille bump. Meanwhile, the thickness of the wire layer needs to be matched with the height of the transmission column so as to ensure that the first through hole can limit the moving direction of the transmission column, so that the transmission column only moves in the vertical direction and is prevented from sliding in the horizontal direction.

The braille reading device provided by the embodiment of the disclosure has the advantages of low cost, small volume and portability, and easy replacement of parts in the device by a user after abrasion.

FIG. 2 illustrates a block diagram of a braille reading device according to an embodiment of the disclosure. FIG. 3 illustrates a block diagram of a single blind spot cell of a braille reading device according to an embodiment of the present disclosure. In one possible implementation, as shown in fig. 2 and 3, the device may further include a fixing layer 15.

And the fixing layer 15 is positioned between the flexible film 13 and the wire layer 12, a plurality of second through holes 151 corresponding to each first through hole 121 are formed in the fixing layer 15, the plurality of transmission columns 14 are respectively positioned in the corresponding first through holes 121 and the corresponding second through holes 151, and the fixing layer 15 is used for limiting the moving direction of the plurality of transmission columns 14.

In the implementation mode, a certain gap exists between the second through hole and the transmission column to ensure that the transmission column can move up and down in the second through hole to form the Braille convex points. Meanwhile, the sum of the thicknesses of the conducting wire layer and the fixing layer needs to be matched with the height of the transmission column, so that the second through hole and the first through hole can limit the moving direction of the transmission column, the transmission column only moves in the vertical direction, and the transmission column is prevented from sliding in the horizontal direction. The material of the fixing layer may be a relatively high hardness material such as organic glass, which is not limited by the present disclosure.

In one possible implementation manner, as shown in fig. 2, a plurality of protrusions 131 corresponding to each transmission post 14 are disposed on one surface of the flexible film 13 close to the wire layer 12, and the plurality of protrusions 131 are embedded inside the flexible film 13. The driving part deforms under the condition of being electrified to jack up the transmission column above, the jacked transmission column extrudes the corresponding bulge on the flexible film, and Braille convex points are generated on the flexible film, so that the flexible film displays Braille.

In this implementation, the flexible film may be etched by using a process such as etching, so as to obtain a plurality of protrusions. Therefore, the thickness of the flexible thin film corresponding to the transmission column is reduced, so that the transmission column can jack up the flexible thin film more easily to form braille convex points.

In a possible implementation manner, the shape of the transmission column includes any one of a cylinder (as shown in fig. 2) and a polygon prism, one end of the transmission column close to the flexible film is provided with a chamfer (as shown in fig. 2), and the plurality of transmission columns are of an internal hollow structure.

In this implementation, the transmission column may be any cylindrical member capable of transmitting the force generated by the deformation of the driving member, and the present disclosure is not limited thereto. The transmission column is provided with the chamfer at one end close to the flexible film, so that the abrasion of the transmission column to the flexible film and the abrasion of the transmission column per se can be reduced, and the service life is prolonged.

In this implementation, the drive column may be made of a lighter material with greater hardness, such as a lightweight plastic. The hollow structure can reduce the weight of the device and is convenient for a user to carry.

In one possible implementation, the material of the drive member may comprise an electroactive polymer.

In this implementation, an Electroactive polymer (EAP) is one of the smart materials, with more specific electrical and mechanical properties. Intelligent material (Intelligent material) is a new functional material which can sense external stimulus, can judge and properly process and can be executed by itself. The electroactive Polymer may be an Ionic Polymer-Metal Composites (IPMC) or the like. The EAP material can generate larger deformation after being induced by an electric field, has large deformation rate and quick response, and can quickly recover to the original shape after the electric field is eliminated. By means of the characteristics of the electroactive polymer, the driving part deforms after being electrified, and transmits pressure to the transmission column through the force generated by deformation, so that the transmission column is jacked up. The higher the supply voltage received by the drive member, the greater the deformation generated by the drive member.

In a possible implementation manner, each driving component is provided with an electrode for connecting with a lead wire on the surface close to the lead wire layer, and the shape of the electrode can comprise any one of a circle and a multi-lobe fan. Wherein, the electrode is arranged in a multi-petal fan shape, so that the deformation degree of the driving part made of the electroactive polymer material after being electrified can be increased.

In this implementation, the surface of each driving part remote from the conductor layer is also provided with another electrode, which is grounded.

In one possible implementation, the device further comprises a housing. Wherein the driving layer, the wire layer, the flexible film, the display control part and the plurality of transmission columns are detachably mounted in the housing.

In this implementation, the housing may be a clamp to clamp the devices together. The housing may also be other components that enable the assembly of the device parts together, and the present disclosure is not limited thereto. Therefore, all parts of the device can be detachably arranged in the shell, so that the replacement of the parts is facilitated, and the cost of the device is reduced.

In one possible implementation, the display control component may be disposed in a layer of conductive lines. Thus, the thickness of the device can be reduced, and the device is convenient for a user to carry.

In one possible implementation, the materials of the driving layer, the wire layer, the flexible film, and the plurality of transmission columns include flexible materials, and the display control component is a flexible device. Thus, the flexibility of the device can be improved, the device is easy to bend, and the requirement of a user on the flexibility of the device can be met.

It should be noted that, although the braille reading device is described above by taking the above-described embodiment as an example, those skilled in the art will appreciate that the present disclosure should not be limited thereto. In fact, the user can flexibly set each component according to personal preference and/or actual application scene, as long as the technical scheme of the disclosure is met.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A braille reading device characterized in that the device comprises: a driving layer, a wire layer, a flexible film, a display control component and a plurality of transmission columns,

2. The apparatus of claim 1, further comprising:

3. The device according to claim 1, wherein a plurality of protrusions corresponding to each of the transmission posts are disposed on a surface of the flexible film adjacent to the wire layer, and the plurality of protrusions are embedded in the flexible film,

4. The device of claim 1, wherein the shape of the driving column comprises any one of a cylinder and a polygon prism, one end of the driving column close to the flexible film is provided with a chamfer, and the plurality of driving columns are of an internal hollow structure.

5. The device of claim 1, wherein the material of the drive member comprises an electroactive polymer.

6. The device of claim 5, wherein each driving member is provided with an electrode for connecting with a lead wire near the surface of the lead wire layer, and the shape of the electrode comprises any one of a circle and a multi-lobe fan.

7. The device of claim 1, further comprising a housing,

8. The apparatus of claim 1, wherein the display control component is disposed in the wire layer.

9. The apparatus of claim 1, wherein the materials of the driving layer, the wire layer, the flexible film, and the plurality of driving posts comprise flexible materials, and the display control component is a flexible device.