CN104408994B - Delaminated electromagnetic braille alphabet display device and braille alphabet reader - Google Patents
Delaminated electromagnetic braille alphabet display device and braille alphabet reader Download PDFInfo
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- CN104408994B CN104408994B CN201410632715.9A CN201410632715A CN104408994B CN 104408994 B CN104408994 B CN 104408994B CN 201410632715 A CN201410632715 A CN 201410632715A CN 104408994 B CN104408994 B CN 104408994B
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Abstract
The invention discloses a delaminated electromagnetic braille alphabet display device and a braille alphabet reader. The braille alphabet display device consists three layers of braille alphabet display modules and a touchpad; the braille alphabet display module in each layer comprises five boards and a plurality of contact driving mechanisms for driving braille alphabet contacts to raise and reset; braille alphabet finger-reading cells arranged in one row or many rows are arranged on the touchpad; a plurality of braille alphabet finger-reading cells for displaying braille alphabet characters are arranged in each row of the braille alphabet finger-reading cells; a microprocessor is respectively connected to a braille alphabet translation and conversion module, a voice broadcasting module and a contact controller; the contact controller is connected with the braille alphabet display device to form the braille alphabet reader. The braille alphabet display device provided by the invention utilizes the working principle of electromagnetic induction, is capable of displaying one or many rows of braille alphabet characters and has the advantages of smart structural design, low cost, stable performance, high reliability and capability of refreshing braille alphabets in real time; moreover, the braille alphabet displaying is synchronous to the voice broadcasting, blind people's reading and studying requirements are satisfied and the braille alphabet display device is significant to the society.
Description
Technical field
The present invention relates to a kind of Braille device and reading machine, especially relate to the blind of a kind of layered electromagnetic formula
Text display device and Braille reading machine, it is simple to visual disorder personage and amblyopia colony carry, be mainly used in reading
Braille and study braille.
Background technology
According to World Health Organization's statistics in 2010, there are 2.85 hundred million people's visual impairments in the whole world, and wherein blind person's number accounts for
39000000, low visual acuity person accounts for 2.46 hundred million.Huge blind community needs various circles of society more care about and support.
Reading speed is fast, identification is high in touch, is the topmost reading method of blind person.But, tradition braille
The special paper of books is expensive, manufacturing process complicated, it is long to expend the time, and, the books printed in braille of publication are few,
Kind is single, information is delayed, quantity of information is little, volume is heavy, not Portable belt, and these factors cause traditional
Braille book can not meet far away the reading requirement of blind person.Modern science and technology how is utilized to research and develop a kind of nothing for blind person
The reading tool Braille reading machine of obstacle, is increasingly becoming the focus of attention of society.
Text importing in traditional paper book or electronic document can be become dynamic braille by Braille reading machine
Braille, replaces books printed in braille heavy traditionally with braille e-book, and blind person is read dynamically by Fingertip touch
Braille lettering, it is possible to meet the reading requirement of blind person well, is the important of the current blind person's reading predicaments of solution
Approach.
Since the nineties in 20th century, Britain, the U.S., Japan and other countries are paid much attention to, and attempt developing braille and read
Reading machine.1997, Britain Taylor P M et al. develop a by marmem as the source of driving
Contact pilotage array Braille display.1999, U.S. Sandia National Labs Anderson T et al. have developed
The braille display device of a kind of 2X3 probe array based on electromagnetic drive type, is installed on the finger of operator,
Can produce small amplitude, blind person, according to the vibration of finger tip, identifies Braille.2000, the U.S.
National Institute of Standards and Tech (NIST) develops a kind of Clothoid type braille display machine, is arranged by braille dot matrix
Rotate on wheel and according to certain speed, it is achieved finger need not be moved and also can continue to read braille.2004,
Tokyo University Kajimoto et al. proposes a kind of SmartTouch system.This system is gathered by optical sensor
Visual information, and it is translated into the tactile data that staff can identify.Electrode material is rustless steel, electrode
A diameter of 1.0mm, is arranged into the form of Braille display and stimulates an array, electrode longitudinal pitch 2.5mm,
Horizontal spacing 2.0mm.Experiment use positive/negative pulse selectively to Merkel cell (pressure feel) and
Meissner corpusculum (vibration sense) is stimulated respectively, so that the finger end of people produces sense of touch, to identify
Braille code word.2005, engineering system of graduate school of the Tokyo University dye grand husband of paddy and the world, Tokyo University were produced and are learned altogether
With the research group of research center Sakurai Gui Kang composition, develop jointly out a kind of using the thin of organic transistor
Membranous type Braille display, by swashing that the organic transistor driving macromolecular material formed on flexible substrates is made
Encouraging device, control surface by electric current and produce or eliminate projection, form braille, this is first by organic transistor
Embed same substrate with activator and be successfully driven.
Compared with abroad, the domestic research starting ratio in braille Display Technique field is later, in scale and the degree of depth
On all there is bigger gap.Calendar year 2001, Tsing-Hua University of China professor Mao Yuhang et al. starts to research and develop Tsing-Hua University's braille
The aobvious device of point, uses piezoceramic material, controls piezoelectric ceramics by voltage power and flexible, the change of bending occurs
Shape, thus promote rising or falling of probe, show braille with this, it is achieved blind person is entered with computer by sense of touch
Row man-machine interaction.2010, Southeast China University's Gu spring laughed at et al. and to use 3 × 3 cup head stimulating electrodes to operator
Finger tip stimulates, it is achieved vision picture and text showing, but the dynamic range of electric touch is narrower, to parameters of electrical stimulation
Area requirement is higher, and difficulty is relatively big, and stimulus parameter is unstable, often can cause sensation of pricking.
The studies above achievement, the overwhelming majority is also in the principle test phase of laboratory research, and fraction produces
Product, but, the braille display device price of commercialization is high, at present, and Braille lattice (i.e.
Individual Braille) price the chances are 100 to 150 dollars, say, that the braille of 40 lattice show
The price of showing device is 4000 to 6000 dollars, and the braille display device of 80 lattice then needs
8000 to 12000 dollars.Such expensive price, popularizing of braille display device of serious hindrance,
Making it difficult for major part blind person disadvantaged group to be benefited, main cause essentially consists in that Research Challenges is many, technology realizes difficulty
Degree is big, R&D costs are high, the cost of raw material is high and processing and manufacturing high in cost of production.
Summary of the invention
In order to solve problem present in above-mentioned background technology, the present invention proposes the blind of a kind of layered electromagnetic formula
Text display device and Braille reading machine, use electromagnetic induction operation principle, can show a line or multirow braille word
Symbol, structure deft design, low cost, volume are little and are easy to carry, stable performance, and reliability is high, can be real
Time refresh braille, and braille show Tong Bu with speech play, meets blind person's reading and learning demand, it is achieved blind
The clog-free reading of people, thus can help to improve the educational level of blind person, improves numerous blind person disadvantaged group
Quality of life, there is huge social meaning.
The technical scheme is that
One, the braille display device of a kind of layered electromagnetic formula:
Including the third layer braille display module installed the most successively, second layer braille display module,
One layer of braille display module and touch pad；Ground floor braille display module, second layer braille display module and
Three layers of braille display module are installed in casing, and touch pad is arranged on the top cap as casing；Touch
Template is provided with the Braille lattice of a line or plurality of rows, and often row Braille lattice have and multiple arrange uniformly at intervals
The Braille lattice of row, Braille lattice show that a Braille, each Braille lattice have six
Braille contact；Touch pad is provided with power switch key, play button, stop key, upper page turning key, lower page turning key
And speaker.
Described ground floor braille display module, second layer braille display module and third layer braille display module
All include base plate that parallel arrangement the most successively installs, fixed plate, pressing plate, iron core plate, circuit board and
Many groups contact drive mechanism corresponding to each Braille lattice；Often row Braille lattice have six groups of contacts to drive
Mechanism, six groups of contact drive mechanisms are for driving projection and the reset of braille contact, six groups of contact drive mechanisms
In be that a unit is separately mounted to ground floor braille display module, second layer braille display module and with two groups
In three layers of braille display module.
The driving assembly that described often group contact drive mechanism includes that multiple structure is identical and arranges uniformly at intervals,
The quantity driving assembly is equal with the quantity of Braille lattice in often row Braille lattice, and one drives assembly control
One braille contact of Braille lattice processed；Assembly is driven to include contact actuator, back-moving spring, coil structure
Part, iron core and needle cap, contact actuator is arranged between fixed plate and pressing plate, back-moving spring, coil member
With iron core is arranged between pressing plate and iron core plate, needle cap is positioned at actuator top, contact and is arranged on touch pad
On, the braille contact touched as blind person；
Contact actuator includes driving pin, drive block, armature and fixing axle；Drive pin lower end and drive block one
End is fixing to be connected, and the drive block other end is hinged in the groove in fixed plate by fixing axle, drives pin upper end to depend on
Secondary it is connected with the needle cap on touch pad after pressing plate, back-moving spring, iron core plate and circuit board；Coil member
Including coil holder and coil, hole is opened at coil holder center, and coil is wound on coil holder, and coil holder lower end is provided with
For connecting the runners of drive block, coil holder upper end is provided with two fixing feet, and two fixing feet are through iron core plate
Fix on circuit boards；Being provided with armature in the middle part of drive block, armature is embedded in coil holder through the groove on pressing plate
In central through hole, drive block position is fixed on drive block by the runners of coil holder lower end through pressure board；Ferrum
Core be fixed on iron core plate bottom surface and be arranged on coil holder central through hole in, base plate is fixed on fixed plate bottom surface,
It is positioned at the bottom of braille display module.
Described each Braille lattice include six with 2 × 3 braille contacts arranged uniformly at intervals, left side
Braille contact is followed successively by the first point, second point and thirdly from top to bottom, and the braille contact on right side is from top to bottom
It is followed successively by the 4th point, and the 6th point at the 5th；In ground floor braille display module, contact drive mechanism is driven respectively
The thirdly braille contact of dynamic often row Braille lattice and the 4th braille contact, second layer braille display module
Middle contact drive mechanism drives the second point braille contact of often row Braille lattice and the 5th braille to touch respectively
Point, in third layer braille display module, contact drive mechanism drives first of often row Braille lattice blind respectively
Literary composition contact and six-dot braille contact.
Two, the Braille reading machine of a kind of layered electromagnetic formula:
Including braille translation modular converter, voice playing module, microprocessor, contactor controller and described
Braille display device；Microprocessor is controlled with braille translation modular converter, voice playing module and contact respectively
Device processed connects, and contactor controller is connected with braille display device；Microprocessor is by the ordinary electronic text of input
Be converted to braille file through braille translation modular converter, braille file again through microprocessor processes be braille control
Signal is sent to contactor controller, and contactor controller control braille display device carries out braille and shows, micro-process
The ordinary electronic text-processing of input is that voice signal is sent to voice playing module and plays out by device；
Braille display device includes third layer braille display module, the second layer braille installed the most successively
Display module, ground floor braille display module and touch pad；Ground floor braille display module, second layer braille
Display module and third layer braille display module are installed in casing, and touch pad is arranged on the top as machine
The cap of shell；Touch pad is provided with the Braille lattice of a line or plurality of rows, and often row Braille lattice have many
The individual Braille lattice arranged uniformly at intervals, Braille lattice show a Braille, each braille
Braille lattice have six braille contacts.
Described ground floor braille display module, second layer braille display module and third layer braille display module
All include base plate that parallel arrangement the most successively installs, fixed plate, pressing plate, iron core plate, circuit board and
Many groups contact drive mechanism corresponding to each Braille lattice；Often row Braille lattice have six groups of contacts to drive
Mechanism, six groups of contact drive mechanisms are for driving projection and the reset of braille contact, six groups of contact drive mechanisms
In be that a unit is separately mounted to ground floor braille display module, second layer braille display module and with two groups
In three layers of braille display module.
The driving assembly that described often group contact drive mechanism includes that multiple structure is identical and arranges uniformly at intervals,
The quantity driving assembly is equal with the quantity of Braille lattice in often row Braille lattice, and one drives assembly control
One braille contact of Braille lattice processed；Assembly is driven to include contact actuator, back-moving spring, coil structure
Part, iron core and needle cap, contact actuator is arranged between fixed plate and pressing plate, back-moving spring, coil member
With iron core is arranged between pressing plate and iron core plate, needle cap is positioned at actuator top, contact and is arranged on touch pad
On, the braille contact touched as blind person.
Described contact actuator includes driving pin, drive block, armature and fixing axle；Drive pin lower end and drive
Motion block one end is fixing to be connected, and the drive block other end is hinged in the groove in fixed plate by fixing axle, drives pin
Upper end is connected with the needle cap on touch pad after sequentially passing through pressing plate, back-moving spring, iron core plate and circuit board；Institute
The coil member stated includes that hole opened by coil holder and coil, coil holder center, and coil is wound on coil holder, line
Ring support lower end is provided with the runners for connecting drive block, and coil holder upper end is provided with two fixing feet, fixes for two
Foot is fixing on circuit boards through iron core plate；Being provided with armature in the middle part of drive block, armature is through the groove on pressing plate
Being embedded in the central through hole of coil holder, the runners of coil holder lower end passes pressure board on drive block by drive block
Position is fixed；Iron core be fixed on iron core plate bottom surface and be arranged on coil holder central through hole in, base plate is fixed on
Fixed plate bottom surface, is positioned at the bottom of braille display module.
Described each Braille lattice include six with 2 × 3 braille contacts arranged uniformly at intervals, left side
Braille contact is followed successively by the first point, second point and thirdly from top to bottom, and the braille contact on right side is from top to bottom
It is followed successively by the 4th point, and the 6th point at the 5th；In ground floor braille display module, contact drive mechanism is driven respectively
The thirdly braille contact of dynamic often row Braille lattice and the 4th braille contact, second layer braille display module
Middle contact drive mechanism drives the second point braille contact of often row Braille lattice and the 5th braille to touch respectively
Point, in third layer braille display module, contact drive mechanism drives first of often row Braille lattice blind respectively
Literary composition contact and six-dot braille contact.
Described touch pad is provided with power switch key, play button, stop key, upper page turning key, lower page turning key
And speaker；Power switch key, play button, stop key, upper page turning key, lower page turning key are all and microprocessor
Connecting, speaker is connected with voice playing module, as audio output device.
The present invention has a following beneficial effect:
Present invention utilizes faraday electromagnetic induction effect, after energising, solenoid electromagnet produces suction, pushes away
Actuator in the display module of dynamic braille contact moves upward, it is achieved the projection of braille contact, after power-off,
Under the effect of back-moving spring, it is achieved the reset of braille contact.
The present invention meets the arranging rule of Braille, is suitable for the reading habit of blind person, and constructional device is exquisite,
The control of braille contact is easily achieved, it is possible to quickly generates braille and the braille that upgrades in time, is favorably improved
The reading efficiency of blind person and quality of life, have the effect that for summary
(1) the braille display device structure of hierarchical design is exquisite, not only meets wanting of braille contact resolution
Ask, and greatly reduce the difficulty of processing and manufacturing and assembling.
(2) electromagnetic type drives braille to show, not only raw material is easily obtained, and easily controllable braille contact
Lifting.
(3) Braille number can extend, to meet blind person's personalization reading requirement.
(4) the volume blind person of being easy to little, lightweight carries.
(5) relative to the braille display device of commercialization, (cost of raw material is low and adds for low cost of the present invention
Work low cost of manufacture), beneficially the popularizing of Braille reading machine, allow major part blind person disadvantaged group be subject to
Benefit, has huge economic outlook and social value.
Accompanying drawing explanation
Fig. 1 is the outline drawing of the present invention.
Fig. 2 is the internal structure schematic diagram of the present invention.
Fig. 3 is the population structure explosive view of the present invention.
Fig. 4 is the partial structurtes explosive view of the present invention.
Fig. 5 is the assembly relation schematic diagram of iron core plate bottom surface and coil member.
Fig. 6 is the structural representation of contact actuator.
Fig. 7 is the structural representation of coil member.
Fig. 8 is the composition diagram of a Braille.
Fig. 9 is the schematic diagram that multirow braille shows.
In figure: 1 is power switch key, 2 is play button, and 3 is stop key, and 4 is upper page turning key, 5 be under turn over
Page key, 6 is speaker, and 7 is braille contact, and 8 is ground floor braille display module, and 9 is second layer braille
Display module, 10 is third layer braille display module, and 11 is fixing axle, and 12 is coil, and 13 is iron core,
14 is back-moving spring, and 15 for driving pin, and 16 is needle cap, and 17 is touch pad, and 18 is casing, and 19 is circuit
Plate, 20 is iron core plate, and 21 is sleeve, and 22 is pressing plate, and 23 is fixed plate, and 24 is base plate, and 25 for driving
Block, 26 is armature, and 27 is runners, and 28 is fixing foot, and 29 is coil holder.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the layered electromagnetic formula Braille reading machine of the present invention includes:
Show including braille translation modular converter, voice playing module, microprocessor, contactor controller, braille
Showing device；Microprocessor is respectively with braille translation modular converter, voice playing module and contactor controller even
Connecing, contactor controller is connected with braille display device；Microprocessor by input ordinary electronic text through braille
Translation modular converter be converted to braille file, braille file again through microprocessor processes be braille control signal pass
Delivering to contactor controller, contactor controller control braille display device carries out braille and shows, microprocessor is by defeated
The ordinary electronic text-processing entered be voice signal be sent to voice playing module carry out synchronize play；
Wherein, microprocessor is connected with contactor controller by serial ports, controls contactor controller and shows to braille
Device output current signal, under the effect of energising, the braille that braille display device completes to specify shows appoints
Business.
Above-mentioned braille translation modular converter can use maximum bi-directional matching method, is divided by ordinary electronic text file
Word, then the ordinary electronic text file after participle is converted to ordinary electronic phonetic file, the spelling of each vocabulary
Separated by space between sound, ordinary electronic phonetic is converted to braille phonetic code the most again, finally braille is spelled
Tone code combination producing braille text, it is achieved ordinary electronic word and the conversion of braille text.
Above-mentioned voice playing module can use JXW0213-080M speech chip, will be from ordinary electronic text
The Word message coding read sends to data base, carries out digital information conversion, then by the numeral letter after conversion
Breath sends to audio output apparatus (such as the speaker 6 of Fig. 1), thus realizes the broadcasting of voice.
Microprocessor can use ARM1026EJ-S, and volume is little, low-power consumption, high-performance, instruction execution speed
Hurry up, in microprocessor, ordinary electronic file is converted into braille file.
Contactor controller can use CMOS integrated circuit to complete the control to braille contact.
As depicted in figs. 1 and 2, the braille display device of the present invention is particularly as follows: include pacifying the most successively
The third layer braille display module 10 of dress, second layer braille display module 9, ground floor braille display module 8
With touch pad 17；Ground floor braille display module 8, second layer braille display module 9 and third layer braille are aobvious
Showing that module 10 is installed in casing 18, touch pad 17 is arranged on the top cap as casing 18,
It is fixed on one with casing；Touch pad 17 is provided with the Braille lattice of a line or plurality of rows, often row braille
Braille lattice have multiple Braille lattice arranged uniformly at intervals, Braille lattice to show a braille word
Symbol, each Braille lattice have six braille contacts.
The sum of Braille lattice of the present invention can be increased by line number, and row and the spacing gone are by national standard (GB/T
15720-2008) being set to 5～6mm, often the quantity of row Braille lattice is identical, can realize multirow Braille
Whole page show, as it is shown in figure 9, more meet the daily reading habit of blind person；Braille lattice often increase a line,
In ground floor braille display module 8, second layer braille display module 9 and third layer braille display module 10
Contact drive mechanism is both needed to increase by two groups.
As shown in Figure 3 and Figure 4, above-mentioned ground floor braille display module 8, second layer braille display module 9 and
Third layer braille display module 10 all includes base plate 24, the fixed plate that parallel arrangement is installed the most successively
23, pressing plate 22, iron core plate 20, circuit board 19 and the many groups contact corresponding to each Braille lattice drive
Mechanism；Often row Braille lattice have six groups of contact drive mechanisms, and contact drive mechanism is according to often row Braille
The quantity (i.e. the number of Braille) of lattice and extend, contact drive mechanism is arranged on each braille display mould
On block, contact drive mechanism for driving projection and the reset of braille contact, in six groups of contact drive mechanisms with
Two groups is that a unit is separately mounted to ground floor braille display module 8, second layer braille display module 9 and the 3rd
In layer braille display module 10；Ground floor braille display module 8, second layer braille display module 9 and the 3rd
The layer braille display module 10 contact drive mechanism group number of every layer is two times of the line number of Braille lattice.
As shown in Figure 4 and Figure 5, above-mentioned often group contact drive mechanism includes that multiple structure is identical and uniformly at intervals
The driving assembly of arrangement, drives the quantity of assembly and the quantity phase of Braille lattice in often row Braille lattice
Deng, one drives the braille contact that assembly controls Braille lattice；Assembly is driven to include that contact drives
Part, back-moving spring 14, coil member, iron core 13 and needle cap 16, contact actuator is arranged on fixed plate 23
With between pressing plate 22, back-moving spring 14, coil member and iron core 13 are arranged on pressing plate 22 and iron core plate 20
Between, needle cap 16 is positioned at actuator top, contact and is arranged on touch pad 17, as blind person touch blind
Literary composition contact.
As shown in Figure 6, above-mentioned contact actuator includes driving pin 15, drive block 25, armature 26 and fixing
Axle 11, drives pin 15 lower end and drive block 25 one end to fix and is connected, and upper end is fixed with needle cap 16, drive block
25 other ends are hinged in the groove in fixed plate 23 by fixing axle 11, drive pin 15 upper end to sequentially pass through pressure
It is connected with the needle cap 16 on touch pad 17 after plate 22, back-moving spring 14, iron core plate 20 and circuit board 19.
As shown in figure 5 and figure 7, above-mentioned coil member includes coil holder 29 and coil 12, in coil holder 29
The heart opens hole, and coil 12 is wound on coil holder 29, and coil holder 29 lower end is provided with for connecting drive block 25
Runners 27, coil holder 29 upper end is provided with two fixing feet 28, and two fixing feet 28 are through iron core plate 20
Fixing on circuit boards, by two fixing feet 28 coil is fixed on iron core plate 20 and with circuit board phase
Even.
Being provided with armature 26 in the middle part of drive block 25, armature 26 is embedded in coil holder 29 through the groove on pressing plate 22
Central through hole in, the runners of coil holder 29 lower end 27 is stuck on drive block 25 will drive through pressing plate 22
Block 25 position is fixed, and contact actuator is along fixing orbiting motion；Iron core 13 is fixed on iron core plate 20 end
Face in being arranged on the central through hole of coil holder 29, base plate 24 is fixed on fixed plate 23 bottom surface, is positioned at braille
The bottom of display module.
As shown in Figure 8, arrange with Braille form in the braille contact of Braille lattice, each Braille
Lattice include six with the braille contact of 2 × 3 uniform arrangements of fixed interval, the braille contact in left side depends on from top to bottom
Secondary is the first point, second point and thirdly, the braille contact on right side be followed successively by from top to bottom the 4th point, the 5th
Point and the 6th point；In ground floor braille display module 8, contact drive mechanism drives often row Braille lattice respectively
Thirdly braille contact and the 4th braille contact, it is achieved that the highlighting and reset of the two contact；Second
In layer braille display module 9, contact drive mechanism drives the second point braille contact of often row Braille lattice respectively
With the 5th braille contact, it is achieved that the highlighting and reset of the two contact；Third layer braille display module 10
Middle contact drive mechanism drives first braille contact of often row Braille lattice and six-dot braille to touch respectively
Point, it is achieved that the highlighting and reset of the two contact.
As shown in Figure 8, the needle cap 16 of braille contact as contact, its generally formed as half-spheres or parabola
Shape be often fixing point between six braille contacts of group braille contact sets away from, arrange in three row two row, contact
Base diameter is 1.0～1.6mm, a height of 0.2～0.5mm, point away from for 2.2～2.8mm, side away from for
3.5～4.0mm.
Function key area on touch pad 17, including power switch key 1, play button 2, stop key 3, upper page turning
Key 4, lower page turning key 5；Power switch key 1, play button 2, stop key 3, upper page turning key 4, lower page turning key
5 are all connected with microprocessor.Power switch key 1 realizes the connecting and disconnecting of power supply, and play button 2 realizes voice
Broadcasting and stopping, stop key 3 realizes braille and shows and the time-out of speech play and recovery, upper page turning key 4
With the page-turning function up and down that lower page turning key 5 is capable of reading.
Present invention utilizes galvanomagnetic-effect, during energising, by electric magnet (being made up of coil 12 and iron core 13)
The suction produced realizes the projection of braille contact, during power-off, under the effect of back-moving spring 14, it is achieved braille
The reset of contact.A point in each braille contact correspondence Braille, different contacts highlight shape
Formula, represents different Brailles.
After circuit ON, having electric current to flow through in coil 12, under the effect of electric current, electric magnet two ends produce electricity
Magnetic force, under the effect of electromagnetic force, the armature 26 on drive block is attracted to the iron core being fixed on iron core plate
13, under the drive of armature 26, the driving pin 15 on drive block moves upward so that it is at touch pad 17 table
Formation contact, face, six contacts show according to output needs, constitute a meaningful braille word
Symbol.
After circuit disconnects, the electric current in coil 12 is 0, and the electromagnetic force that now electric magnet two ends produce disappears,
Be in the back-moving spring 14 of compressive state, to drive pin 15 have downward active force, cause driving pin 15 to
Lower motion, original contact formed will disappear, and drives pin 15 to return to home position.
One specific embodiment of the present invention as shown in Figure 1, Figure 4 and Figure 5, touch pad 17 has a line blind
Literary composition braille lattice, can show that 20 Brailles, each Braille lattice have six braille contacts, touch
Plate 17 has 120 braille contacts.Ground floor braille display module 8, second layer braille display module
9, third layer braille display module 10 all has two groups of contact drive mechanisms, and often group contact drive mechanism includes 20
Individual driving assembly, 120 drive assembly altogether, and the most corresponding 120 driven on touch pad 17 are blind
Literary composition contact, controls projection and the reset of braille contact.Being spaced apart between adjacent two braille contact sets
3.5mm, contact is 2.5mm with the distance of contact.The sum of Braille lattice of the present invention can be increased by line number
Adding, as it is shown in figure 9, there are M row Braille lattice on touch pad, often row can show N number of Braille,
Each Braille lattice have six braille contacts, then touch pad 17 has 6 × M × N number of braille contact.The
One layer of braille display module 8, second layer braille display module 9, third layer braille display module 10 all have 2
× M group contact drive mechanism, often group contact drive mechanism includes N number of driving assembly, altogether 3 × 2 × M ×
N number of driving assembly, correspondence drives the 6 × M × N number of braille contact on touch pad 17 respectively.
The work process of the present invention is as follows:
1) layered electromagnetic formula Braille reading machine original state is not for show that braille, braille contact 7 are in touch pad
In the hole of 17；The duty of Braille reading machine is display braille, braille contact 7 putting down beyond touch pad 17
Face, forms contact.
2), during original state, microprocessor passes through serial ports contactor controller in braille display device and sends not
Display command, drives pin 15 to be in initial position, the electric current in contactor controller access failure circuit board 19,
Solenoid 12 does not have electric current to pass through, braille display module 8, all do not have electromagnetic force to produce in 9,10,
Drive block 25 is not acted on by electromagnetic force, and drive block 25 bottom surface contacts with base plate 24.
3) state of layered electromagnetic formula Braille reading machine is by not showing the braille transformation process to display braille: micro-
Processor passes through serial ports contactor controller in braille display device and sends display command；Contactor controller root
According to the order received, connect the electric current of interlock circuit in circuit board 19；Solenoid 12 there is electric current lead to
Cross, braille display module 8, in 9,10, have electromagnetic force to produce；Drive block 25 is acted on by electromagnetic force, and drive is driven
Dynamic pin 15 is moved upward by initial position, until it reaches display position, at electromagnetic force and back-moving spring 14
Under common effect, drive block 25 stop motion, drive pin 15 to be maintained at display position.Meanwhile, micro-process
Device sends play command by serial ports to voice playing module, it is achieved the broadcasting of voice.
4) after circuit ON, having electric current to flow through in coil 12, under the effect of electric current, are produced from electric magnet two ends
Raw electromagnetic force, under the effect of electromagnetic force, the armature 26 on drive block 25 is attracted to the iron core 13 fixed,
Under drive block 25 drives, drive pin 15 to move upward, make the needle cap 16 on fixed drive pin at touch pad
17 surfaces form contact one by one.These contacts just constitute the Braille with definite meaning.
5) in layered electromagnetic formula Braille reading machine work process, microprocessor can receive merit on touch pad 17
The instruction of energy key, and control relevant function key work according to the instruction received.Function key on touch pad 17
District, including power switch key 1, play button 2, stop key 3, upper page turning key 4, lower page turning key 5；Power supply is opened
Key 1, play button 2, stop key 3, upper page turning key 4, lower page turning key 5 are all connected with microprocessor.Electricity
Source switch key 1 realizes the connecting and disconnecting of power supply, and play button 2 realizes broadcasting and the stopping of voice, stop key 3
Realize braille and show that the time-out with speech play and recovery, upper page turning key 4 and lower page turning key 5 are capable of readding
The page-turning function up and down read.
6) state of layered electromagnetic formula Braille reading machine is by showing that braille is to the transformation process not showing braille: micro-
Processor passes through serial ports contactor controller in braille display device and sends reset command；Contactor controller root
According to the order received, the electric current of all circuit in disconnecting circuit plate 19；Electric current in solenoid 12 breaks
Opening, braille display module 8, the electromagnetic force in 9,10 disappears；Drive block 25 is no longer made by electromagnetic force
With, under the effect of back-moving spring 14, drive block 25 moves downward, and drives pin 15 extensive by display position
Arrive initial position again.Meanwhile, microprocessor sends stopping play command by serial ports to voice playing module,
Thus stop the broadcasting of voice.
7) after circuit disconnects, the electric current in coil 12 is 0, and the electromagnetic force that electric magnet two ends produce disappears, this
Time be in the back-moving spring 14 of compressive state, drive block 25 is had downward acting force of the spring, drive block 25
Moving downward, cause driving pin 15 to move downward therewith, original braille contact formed disappears, and drives pin 15
Return to home position.
Above-mentioned detailed description of the invention is used for illustrating the present invention rather than limiting the invention, at this
In the spirit of invention and scope of the claims, any modifications and changes that the present invention is made, all fall
Enter protection scope of the present invention.
Claims (8)
1. the braille display device of a layered electromagnetic formula, it is characterised in that: include third layer braille display module (10), second layer braille display module (9), ground floor braille display module (8) and the touch pad (17) installed the most successively；Ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) are installed in casing (18), and touch pad (17) is arranged on the top cap as casing (18)；Touch pad (17) is provided with the Braille lattice of a line or plurality of rows, and often row Braille lattice have multiple Braille lattice arranged uniformly at intervals, Braille lattice to show that a Braille, each Braille lattice have six braille contacts；Touch pad (17) is provided with power switch key (1), play button (2), stop key (3), upper page turning key (4), lower page turning key (5) and speaker (6)；
Described ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) all includes base plate (24), fixed plate (23), pressing plate (22), iron core plate (20), circuit board (19) and the many groups contact drive mechanism corresponding to each Braille lattice that parallel arrangement is installed the most successively；Often row Braille lattice have six groups of contact drive mechanisms, six groups of contact drive mechanisms, for driving projection and the reset of braille contact, are that a unit is separately mounted in ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) with two groups in six groups of contact drive mechanisms.
The braille display device of a kind of layered electromagnetic formula the most according to claim 1, it is characterized in that: the driving assembly that described often group contact drive mechanism includes that multiple structure is identical and arranges uniformly at intervals, the quantity driving assembly is equal with the quantity of Braille lattice in often row Braille lattice, and one drives the braille contact that assembly controls Braille lattice；
Assembly is driven to include contact actuator, back-moving spring (14), coil member, iron core (13) and needle cap (16), contact actuator is arranged between fixed plate (23) and pressing plate (22), back-moving spring (14), coil member and iron core (13) are arranged between pressing plate (22) and iron core plate (20), needle cap (16) is positioned at actuator top, contact and is arranged on touch pad (17), the braille contact touched as blind person；
Contact actuator includes driving pin (15), drive block (25), armature (26) and fixing axle (11)；Drive pin (15) lower end and drive block (25) one end to fix to be connected, drive block (25) other end is hinged in the groove in fixed plate (23) by fixing axle (11), drives pin (15) upper end to sequentially pass through pressing plate (22), back-moving spring (14), iron core plate (20) and circuit board (19) and is connected with the needle cap (16) on touch pad (17) afterwards；
Coil member includes coil holder (29) and coil (12), hole is opened at coil holder (29) center, coil (12) is wound on coil holder (29), coil holder (29) lower end is provided with the runners (27) for connecting drive block (25), coil holder (29) upper end is provided with two fixing feet (28), and two fixing feet (28) are fixed on circuit board (19) through iron core plate (20)；
Drive block (25) middle part is provided with armature (26), armature (26) is embedded in the central through hole of coil holder (29) through the groove on pressing plate (22), and the runners (27) of coil holder (29) lower end is stuck on drive block (25) through pressing plate (22) and is fixed drive block (25) position；Iron core (13) be fixed on iron core plate (20) bottom surface and be arranged on coil holder (29) central through hole in, base plate (24) is fixed on fixed plate (23) bottom surface, is positioned at the bottom of braille display module.
3. according to the braille display device of the arbitrary described a kind of layered electromagnetic formula of claim 1 ~ 2, it is characterized in that: described each Braille lattice include six with 2 × 3 braille contacts arranged uniformly at intervals, the braille contact in left side is followed successively by the first point, second point and thirdly from top to bottom, and the braille contact on right side is followed successively by the 4th point, and the 6th point from top to bottom at the 5th；In ground floor braille display module (8), contact drive mechanism drives the thirdly braille contact of often row Braille lattice and the 4th braille contact respectively, in second layer braille display module (9), contact drive mechanism drives the second point braille contact of often row Braille lattice and the 5th braille contact respectively, and in third layer braille display module (10), contact drive mechanism drives first braille contact and the six-dot braille contact of often row Braille lattice respectively.
4. the Braille reading machine of a layered electromagnetic formula, it is characterised in that: include the arbitrary described braille display device of braille translation modular converter, voice playing module, microprocessor, contactor controller and claim 1 ~ 3；Microprocessor is connected with braille translation modular converter, voice playing module and contactor controller respectively, and contactor controller is connected with braille display device；The ordinary electronic text of input is converted to braille file through braille translation modular converter by microprocessor, braille file is that braille control signal is sent to contactor controller through microprocessor processes again, contactor controller controls braille display device and carries out braille and show, the ordinary electronic text-processing of input is that voice signal is sent to voice playing module and plays out by microprocessor；
Braille display device includes third layer braille display module (10), second layer braille display module (9), ground floor braille display module (8) and the touch pad (17) installed the most successively；Ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) are installed in casing (18), and touch pad (17) is arranged on the top cap as casing (18)；Touch pad (17) is provided with the Braille lattice of a line or plurality of rows, and often row Braille lattice have multiple Braille lattice arranged uniformly at intervals, Braille lattice to show that a Braille, each Braille lattice have six braille contacts；
Described ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) all includes base plate (24), fixed plate (23), pressing plate (22), iron core plate (20), circuit board (19) and the many groups contact drive mechanism corresponding to each Braille lattice that parallel arrangement is installed the most successively；
Often row Braille lattice have six groups of contact drive mechanisms, six groups of contact drive mechanisms, for driving projection and the reset of braille contact, are that a unit is separately mounted in ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) with two groups in six groups of contact drive mechanisms.
The Braille reading machine of a kind of layered electromagnetic formula the most according to claim 4, it is characterized in that: the driving assembly that described often group contact drive mechanism includes that multiple structure is identical and arranges uniformly at intervals, the quantity driving assembly is equal with the quantity of Braille lattice in often row Braille lattice, and one drives the braille contact that assembly controls Braille lattice；Assembly is driven to include contact actuator, back-moving spring (14), coil member, iron core (13) and needle cap (16), contact actuator is arranged between fixed plate (23) and pressing plate (22), back-moving spring (14), coil member and iron core (13) are arranged between pressing plate (22) and iron core plate (20), needle cap (16) is positioned at actuator top, contact and is arranged on touch pad (17), the braille contact touched as blind person.
The Braille reading machine of a kind of layered electromagnetic formula the most according to claim 5, it is characterised in that: described contact actuator includes driving pin (15), drive block (25), armature (26) and fixing axle (11)；Drive pin (15) lower end and drive block (25) one end to fix to be connected, drive block (25) other end is hinged in the groove in fixed plate (23) by fixing axle (11), drives pin (15) upper end to sequentially pass through pressing plate (22), back-moving spring (14), iron core plate (20) and circuit board (19) and is connected with the needle cap (16) on touch pad (17) afterwards；
Described coil member includes coil holder (29) and coil (12), hole is opened at coil holder (29) center, coil (12) is wound on coil holder (29), coil holder (29) lower end is provided with the runners (27) for connecting drive block (25), coil holder (29) upper end is provided with two fixing feet (28), and two fixing feet (28) are fixed on circuit board (19) through iron core plate (20)；
Drive block (25) middle part is provided with armature (26), armature (26) is embedded in the central through hole of coil holder (29) through the groove on pressing plate (22), and the runners (27) of coil holder (29) lower end is stuck on drive block (25) through pressing plate (22) and is fixed drive block (25) position；Iron core (13) be fixed on iron core plate (20) bottom surface and be arranged on coil holder (29) central through hole in, base plate (24) is fixed on fixed plate (23) bottom surface, is positioned at the bottom of braille display module.
7. according to the Braille reading machine of the arbitrary described a kind of layered electromagnetic formula of claim 4～6, it is characterized in that: described each Braille lattice include six with 2 × 3 braille contacts arranged uniformly at intervals, the braille contact in left side is followed successively by the first point, second point and thirdly from top to bottom, and the braille contact on right side is followed successively by the 4th point, and the 6th point from top to bottom at the 5th；In ground floor braille display module (8), contact drive mechanism drives the thirdly braille contact of often row Braille lattice and the 4th braille contact respectively, in second layer braille display module (9), contact drive mechanism drives the second point braille contact of often row Braille lattice and the 5th braille contact respectively, and in third layer braille display module (10), contact drive mechanism drives first braille contact and the six-dot braille contact of often row Braille lattice respectively.
8. according to the Braille reading machine of the arbitrary described a kind of layered electromagnetic formula of claim 4～6, it is characterised in that: described touch pad (17) is provided with power switch key (1), play button (2), stop key (3), upper page turning key (4), lower page turning key (5) and speaker (6)；Power switch key (1), play button (2), stop key (3), upper page turning key (4), lower page turning key (5) are all connected with microprocessor, and speaker (6) is connected with voice playing module, as audio output device.
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| KR102130776B1 (en) * | 2018-05-16 | 2020-07-08 | 주식회사 닷 | Information output apparatus |
| CN108847090A (en) * | 2018-07-16 | 2018-11-20 | 北京联合大学 | A kind of portable blind person's teaching aid |
| CN111047949A (en) * | 2019-09-19 | 2020-04-21 | 谭巍 | Braille reader for realizing random text reading based on self-built Chinese character Braille library |
| CN111462593B (en) * | 2020-06-03 | 2020-12-04 | 高燕妮 | Electromagnetic braille display device |
| CN112258943A (en) * | 2020-11-11 | 2021-01-22 | 长春大学 | Piezoelectric cantilever pneumatic braille point display |
| CN115171485B (en) * | 2022-08-04 | 2023-05-23 | 南京信息工程大学 | Electromagnetic driving braille display device |
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