CN202049639U

CN202049639U - Braille touch screen

Info

Publication number: CN202049639U
Application number: CN2011201699759U
Authority: CN
Inventors: 邓健志
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2011-05-23
Filing date: 2011-05-23
Publication date: 2011-11-23
Anticipated expiration: 2021-05-23

Abstract

The utility model discloses a Braille touch screen comprising contacts, wherein the number of the contacts is a multiple of 6, every 6 contacts are arranged to form a Braille finger-reading unit of which three contacts form a line and two contacts form a column; all Braille finger-reading units are mounted together to form the Braille touch screen; each contact comprises a base frame, a return spring, a coil, a permanent magnet, an iron core and a coil lead wire, wherein one end of the return spring is connected with the bottom of the permanent magnet, and the other end of the return spring is connected with the base frame; the coil and the iron core form an electromagnet fixed on the bottom of the base frame; the coil lead wire is connected with an external control circuit for supplying power to the coil; and the top part of the permanent magnet is hemispherical. In the utility model, the electricity is utilized to generate the magnetic field, as well as the Ampere rule and the repellent character of like poles of the magnet body are utilized; the hoisting and the reposition of the contacts are realized through a pull force and a push force generated by the permanent magnet and the electromagnet; the Braille touch screen conforms to Braille finger reading formation rule and the habit of the blind, has a simple structure, and is easy to realize; and the exterior of the Braille touch screen is only controlled by a normal chip, so as to realize the quick generation and updating of the Braille.

Description

A kind of braille touch-screen

Technical field

The utility model relates to a kind of braille touch-screen.

Background technology

Along with the fast development of informationization technology and the continuous progress of society, much former can not all become possibility, and our life is more and more convenient, and life content is also more and more abundanter.Yet when enjoying abundant material and spiritual civilization, we can not forget with us to also have the group, and they are because of congenital or posteriori factor, and eyes cannot see, can not be as the normal walking of ordinary people, reading etc.

These people visually impaired also are society's parts, and we will give, and they are more to show loving care for and help.Especially in the today of building a harmonious society, we more want so.

Our state leader also represents, be concerned about the numerous disabled persons that comprise blind person or crowd visually impaired, require competent authorities at different levels will include the development of blind person's cultural undertakings in one of them emphasis of following work, accelerate the information-based research and development of products production of blind usefulness promotion efficiency, allow blind person's equality enjoy the Information Technology Development progress.

For blind person or crowd visually impaired, maximum in a life problem is read exactly, and they can not read as the normal person, read newspaper, online etc.The means that they obtain information are more single, have only two kinds of sound and brailles, and they can only or touch by listening and read the Braille books that aim at their design, obtain extraneous information.

Nowadays, a large amount of information all is to propagate by e-platform, such mode is very inconvenient for blind person or crowd visually impaired, because they can not obtain information by the graph text information of reading display screen fully, so, for fewer they of information obtaining means, life is just more inconvenient.

Braille is one of modal instrument of reading of blind person.Braille commonly used is the point with 1～6 projection, be arranged in the rectangle that 6 some positions are arranged, different characters is represented in the varying number of point and the combination of diverse location respectively, and the blind person can carry out the recognition of literal by the point with these projectioies of finger touch perception.

Summary of the invention

The purpose of this utility model is to provide a kind of braille touch-screen, for blind person and those crowds visually impaired provide a kind of instrument of reading electronic literature.

The technical scheme of braille touch-screen of the present utility model: a kind of braille touch-screen, comprise that quantity is the contact of 6 multiple, arrange according to the mode of triplex row two row per six contacts, forms a Braille unit.All Braille unit are fitted together, and just constitute braille touch-screen of the present utility model.

The key of braille touch screen technology scheme of the present utility model is the contact, and the contact design scheme is as follows: a contact comprises: several sections such as pedestal, back-moving spring, coil, permanent magnet, iron core, coil lead.Wherein, back-moving spring one end is connected the permanent magnet bottom, and the other end is fixed on the pedestal; Coil is enclosed within outside the iron core, and coil and iron core constitute electromagnet jointly.Iron core and coil are fixed on the pedestal bottom; Coil lead is used for being connected with the external arithmetic control circuit, is coil power supply; The permanent magnet top is designed for semisphere.

The principle of work of the utility model device is the principle that the phenomenon, Ampere's law (right-hand screw rule) and the magnet homopolarity that have utilized electric magnetisation repels mutually.By thrust, the pulling force that permanent magnet and electromagnet (being made of coil and iron core) produce, each contact of realization Braille is risen and is resetted.

The utility model structure, principle are simple, and design realizes that difficulty is little, and cost is low; Meet the formation rule of Braille and blind person's use habit; External control circuit is simple, only needs control chip commonly used to drive, and just can realize the quick generation and the renewal of braille, makes things convenient for the blind person to obtain more information.

Description of drawings

Fig. 1 is the structural drawing of the utility model contact, also is the synoptic diagram of contact when not switching on simultaneously.

Fig. 2 is the synoptic diagram of contact of the present utility model when work.

Fig. 3 is the synoptic diagram of Braille of the present utility model unit.

Fig. 4 is the structural representation of the braille touch-screen of the utility model embodiment.

Mark among the figure: 1, pedestal; 2, back-moving spring; 3, coil; 4, permanent magnet; 5, iron core; 6, coil lead; 7, contact; 8, Braille unit; 9, braille touch-screen; 10, control bus.

Embodiment

Embodiment:

Braille touch-screen 9 comprises: 18 Braille unit 8 are fitted together by the mode that 3 row 6 are listed as, and each Braille unit 8 is rearranged by the mode of six contacts 7 according to triplex row two row.

Each contact 7 comprises: pedestal 1, back-moving spring 2, coil 3, permanent magnet 4, iron core 5, coil lead 6.Contact 7 structures such as Fig. 1, permanent magnet 4 are a bar-type magnetic bodies, and permanent magnet 4 tops are the N utmost point, and permanent magnet 4 tops are designed for semisphere, and permanent magnet 4 bottoms are the S utmost point.Back-moving spring 2 one ends are connected permanent magnet 4 bottoms, and the other end is fixed on the pedestal 1; Coil 3 is enclosed within outside the iron core 5, coil 3 and iron core 5 common formation electromagnet, and iron core 5 and coil 3 are fixed on pedestal 1 bottom; Coil lead 6 is used for being connected with external drive circuit, is coil 3 power supplies.

Arrange according to the mode of triplex row two row per six contacts 7, forms a Braille unit 8.18 Braille unit 8 are fitted together by the mode that 3 row 6 are listed as, and just constitute braille touch-screen 9 of the present utility model.

The principle of work of the utility model device is the principle that the phenomenon, Ampere's law and the magnet homopolarity that have utilized electric magnetisation repels mutually.Under the effect of thrust that permanent magnet 4 and electromagnet (being made of coil 3 and iron core 5) produce, pulling force, realize Braille unit 8 each contact 7 rise and reset.

When coil 3 no powers, coil 3 and iron core 5 do not produce magnetic field.At this moment, permanent magnet 4 is subjected to the magnetic force that produces between the pulling force of back-moving spring 2 and permanent magnet 4 and the iron core 5, makes permanent magnet 4 remain on state as Fig. 1, and permanent magnet 4 domed top remain under pedestal 1 top.

After passing to the respective direction electric current for coil 3, it is the S utmost point that coil 3 and iron core 5 can produce a top, the magnetic field of the bottom N utmost point.Because permanent magnet 4 bottoms are the S utmost point, the principle of repelling mutually according to the magnet homopolarity, permanent magnet 4 is because be subjected to the effect of electromagnetic repulsion force, overcome the pulling force of back-moving spring 2, move upward, hemisphere portion emersion pedestal 1 top, permanent magnet 4 top forms a hemispherical projections, as shown in Figure 2 at pedestal 1 top.

Each contact 7 of braille touch-screen 9 all connects into control bus 10 by coil lead 6, control bus 10 is connected with external control circuit, when needs show corresponding Braille, the coil 6 of corresponding contact 7 passes to the respective direction electric current only to need to give with it, and making coil 3, iron core 5 produce upper magnetic pole is the magnetic field of the S utmost point.Because permanent magnet 4 bottoms are the S utmost point, according to the principle that the magnet homopolarity repels mutually, permanent magnet 4 is subjected to the effect of electromagnetic repulsion force and moves upward, and semisphere emersion pedestal 1 top, permanent magnet 4 top forms a hemispherical projections, as shown in Figure 2 at pedestal 1 top.And the contact 7 that does not power up remains on the state as Fig. 1, and permanent magnet 4 domed top remain under pedestal 1 top.

Thus, make each Braille unit 8 can both form corresponding Braille, the blind person can just can carry out the recognition of Braille with the quantity and the position of the raised points of each Braille unit 8 on the finger touch perception braille touch-screen 9.

When needs show new braille word, only need quantity and position according to this Braille point, power up to corresponding contact 7 with it, just can generate new Braille.

Claims

1. braille touch-screen is characterized in that: comprise that quantity is the contact (7) of 6 multiple, per six contacts (7) are arranged in a Braille unit (8) by the mode of triplex row two row; All Braille unit (8) are fitted together and constitute braille touch-screen (9); Each contact (7) comprising: pedestal (1), back-moving spring (2), coil (3), permanent magnet (4), iron core (5), coil lead (6); Back-moving spring (2) one ends are connected permanent magnet (4) bottom, and the other end is fixed on the pedestal (1); Coil (3) and iron core (5) are formed electromagnet; Electromagnet is fixed on pedestal (1) bottom; Coil lead (6) links to each other with external control circuit, is coil (3) power supply; Permanent magnet (4) top is a semisphere.