CN104408994A - 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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- CN104408994A CN104408994A CN201410632715.9A CN201410632715A CN104408994A CN 104408994 A CN104408994 A CN 104408994A CN 201410632715 A CN201410632715 A CN 201410632715A CN 104408994 A CN104408994 A CN 104408994A
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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 a kind of braille display device and Braille reading machine of layered electromagnetic formula, be convenient to dysopia personage and amblyopia colony carries, 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 3,900 ten thousand, and low visual acuity person accounts for 2.46 hundred million.Huge blind community needs various circles of society more care about and support.
Touch reading rate is fast, identification is high, is the topmost reading method of blind person.But, the special paper of tradition books printed in braille is expensive, production process is complicated, expend time in length, and, the books printed in braille published 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 to can not meet the reading requirement of blind person far away.How to utilize modern science and technology for blind person researches and develops a kind of clog-free reading tool---Braille reading machine, day by day become society the focus of attention.
Text importing in traditional paper book or electronic document can be become dynamic Braille by Braille reading machine, books printed in braille heavy are traditionally replaced with braille e-book, blind person reads dynamic braille word by Fingertip touch, can meet the reading requirement of blind person well, be the important channel solving current blind person's reading predicaments.
Since the nineties in 20th century, Britain, the U.S., Japan and other countries are paid much attention to, and attempt development Braille reading machine.1997, the people such as Britain Taylor P M developed a by the contact pilotage array Braille display of marmem as drive source.1999, the people such as U.S. Sandia National Labs Anderson T have developed a kind of braille display device of the 2X3 probe array based on electromagnetic drive type, are installed on the finger of operator, can produce small amplitude, blind person, according to the vibration of finger tip, identifies Braille.2000, American National Standard technical institute (NIST) developed a kind of Clothoid type braille display machines, was arranged in by braille dot matrix and took turns upper and rotate according to certain speed, and realization need not also can continue to read braille by moveable finger.2004, the people such as Tokyo University Kajimoto proposed a kind of SmartTouch system.This system gathers visual information by optical sensor, and is translated into the tactile data that staff can identify.Electrode material is stainless steel, and electrode diameter is 1.0mm, is arranged into point stimulation array with the form of Braille display, electrode longitudinal pitch 2.5mm, horizontal spacing 2.0mm.Experiment uses positive/negative pulse to stimulate respectively Merkel cell (pressure feel) and Meissner corpusculum (seismesthesia) selectively, thus makes the finger end of people produce sense of touch, to identify braille code word.2005, the research group learning Common Centre Of Research Sakurai Gui Kang composition is produced in engineering system of graduate school of the Tokyo University dye grand husband of paddy and the world, Tokyo University, develop jointly out a kind of film-type Braille display using organic transistor, the driver driving macromolecular material to make by the organic transistor formed on flexible substrates, produce or eliminate protruding by Current Control surface, form braille, this first organic transistor and driver is embedded same substrate and successfully drives.
Compared with abroad, the domestic starting of the research in braille display technique field is more late, and scale and the degree of depth all exist larger gap.Calendar year 2001, the people such as Tsing-Hua University of China professor Mao Yuhang start to research and develop Tsing-Hua University's braille point and show device, adopt piezoceramic material, control piezoelectric ceramics by voltage power and flexible, bending distortion occurs, thus promote rising or the decline of probe, show braille with this, realize blind person and carry out man-machine interaction by sense of touch and computer.2010, the people from Southeast China University such as to laugh at the ancient spring and adopts 3 × 3 cup head stimulating electrodes to stimulate operator's finger tip, realizes vision picture and text showing; but the dynamic range of electric touch is narrower, higher to parameters of electrical stimulation area requirement, difficulty is larger; stimulation parameter is unstable, often can cause tingling sensation.
Above-mentioned achievement in research, the overwhelming majority is also in the principle test phase of laboratory study, fraction is commercialization, but, the braille display device price of commercialization is high, at present, the price of a Braille lattice (i.e. a Braille) the chances are 100 to 150 dollars, that is the price of the braille display device of 40 lattice is 4000 to 6000 dollars, and the braille display device of 80 lattice then needs 8000 to 12000 dollars.Expensive price like this, serious hindrance the popularizing of braille display device, be difficult to allow most of blind person disadvantaged group be benefited, main cause is mainly that Research Challenges is many, technology realizes that difficulty is large, 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 Problems existing in above-mentioned background technology, the present invention proposes a kind of braille display device and Braille reading machine of layered electromagnetic formula, adopt electromagnetic induction principle of work, a line or multirow Braille can be shown, structural design is exquisite, cost is low, volume is little and be easy to carry, stable performance, reliability is high, braille can be refreshed in real time, and braille display is synchronous with speech play, meet blind person to read and learning demand, realize the clog-free reading of blind person, the educational level improving blind person can be contributed to thus, improve the quality of life of numerous blind person disadvantaged group, there is huge social effect.
Technical scheme of the present invention is:
One, a kind of braille display device of layered electromagnetic formula:
Comprise third layer braille display module, second layer braille display module, ground floor braille display module and the touch pad installed successively from below to up; 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 cap of the top as casing; Touch pad 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, and Braille lattice show a Braille, and each Braille lattice have six braille contacts; Touch pad is provided with power switch key, play button, stop key, upper page turning key, lower page turning key and loudspeaker.
Described ground floor braille display module, second layer braille display module and third layer braille display module include from lower to upper base plate, fixed head, pressing plate, iron core plate, circuit board and the many groups contact driving mechanism corresponding to each Braille lattice that parallel arrangement is successively installed; Often row Braille lattice have six groups of contact driving mechanisms, six groups of contact driving mechanisms, for driving projection and the reset of braille contact, are that a unit is arranged in ground floor braille display module, second layer braille display module and third layer braille display module respectively with two groups in six groups of contact driving mechanisms.
Described contact driving mechanism of often organizing comprises the identical and driven unit arranged uniformly at intervals of multiple structure, and the quantity of driven unit is equal with the quantity of Braille lattice in every row Braille lattice, a braille contact of driven unit control Braille lattice; Driven unit comprises contact actuator, back-moving spring, coil member, iron core and pin cap, contact actuator is arranged between fixed head and pressing plate, back-moving spring, coil member and iron core are arranged between pressing plate and iron core plate, pin cap is positioned at actuator top, contact and installs on a touchpad, as the braille contact that blind person touches;
Contact actuator comprises driving needle, drive block, armature and stationary shaft; Driving needle lower end is fixedly connected with drive block one end, and the drive block other end is hinged in the groove on fixed head by stationary shaft, and driving needle upper end is connected with the pin cap on touch pad with after circuit board through pressing plate, back-moving spring, iron core plate successively; Coil member comprises coil holder and coil, and hole is opened at coil holder center, and coil is around on coil holder, and coil holder lower end is provided with the runners for connecting drive block, and coil holder upper end is provided with two fixing feet, and two fixing feet are fixing on circuit boards through iron core plate; Be provided with armature in the middle part of drive block, armature is embedded in the central through hole of coil holder through the groove on pressing plate, and drive block position is fixed on drive block through pressure board by the runners of coil holder lower end; Iron core is fixed on iron core plate bottom surface and is arranged in the central through hole of coil holder, and base plate is fixed on fixed head bottom surface, is positioned at the bottom of braille display module.
Described each Braille lattice comprise six braille contacts arranged uniformly at intervals with 2 × 3, 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, contact driving mechanism drives thirdly braille contact and the 4th the braille contact of often row Braille lattice respectively, in second layer braille display module, contact driving mechanism drives second point braille contact and the 5th the braille contact of often row Braille lattice respectively, and in third layer braille display module, contact driving mechanism drives first braille contact and the 6th the braille contact of often row Braille lattice respectively.
Two, a kind of Braille reading machine of layered electromagnetic formula:
Comprise braille translation modular converter, voice playing module, microprocessor, contactor controller and described braille display device; 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 display, and the ordinary electronic text-processing of input is that voice signal is sent to voice playing module and plays by microprocessor;
Braille display device comprises third layer braille display module, second layer braille display module, ground floor braille display module and the touch pad installed successively from below to up; 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 cap of the top as casing; Touch pad 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, and Braille lattice show a Braille, and each Braille lattice have six braille contacts.
Described ground floor braille display module, second layer braille display module and third layer braille display module include from lower to upper base plate, fixed head, pressing plate, iron core plate, circuit board and the many groups contact driving mechanism corresponding to each Braille lattice that parallel arrangement is successively installed; Often row Braille lattice have six groups of contact driving mechanisms, six groups of contact driving mechanisms, for driving projection and the reset of braille contact, are that a unit is arranged in ground floor braille display module, second layer braille display module and third layer braille display module respectively with two groups in six groups of contact driving mechanisms.
Described contact driving mechanism of often organizing comprises the identical and driven unit arranged uniformly at intervals of multiple structure, and the quantity of driven unit is equal with the quantity of Braille lattice in every row Braille lattice, a braille contact of driven unit control Braille lattice; Driven unit comprises contact actuator, back-moving spring, coil member, iron core and pin cap, contact actuator is arranged between fixed head and pressing plate, back-moving spring, coil member and iron core are arranged between pressing plate and iron core plate, pin cap is positioned at actuator top, contact and installs on a touchpad, as the braille contact that blind person touches.
Described contact actuator comprises driving needle, drive block, armature and stationary shaft; Driving needle lower end is fixedly connected with drive block one end, and the drive block other end is hinged in the groove on fixed head by stationary shaft, and driving needle upper end is connected with the pin cap on touch pad with after circuit board through pressing plate, back-moving spring, iron core plate successively; Described coil member comprises coil holder and coil, hole is opened at coil holder center, and coil is around on coil holder, and coil holder lower end is provided with the runners for connecting drive block, coil holder upper end is provided with two fixing feet, and two fixing feet are fixing on circuit boards through iron core plate; Be provided with armature in the middle part of drive block, armature is embedded in the central through hole of coil holder through the groove on pressing plate, and drive block position is fixed on drive block through pressure board by the runners of coil holder lower end; Iron core is fixed on iron core plate bottom surface and is arranged in the central through hole of coil holder, and base plate is fixed on fixed head bottom surface, is positioned at the bottom of braille display module.
Described each Braille lattice comprise six braille contacts arranged uniformly at intervals with 2 × 3, 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, contact driving mechanism drives thirdly braille contact and the 4th the braille contact of often row Braille lattice respectively, in second layer braille display module, contact driving mechanism drives second point braille contact and the 5th the braille contact of often row Braille lattice respectively, and in third layer braille display module, contact driving mechanism drives first braille contact and the 6th the braille contact of often row Braille lattice respectively.
Described touch pad is provided with power switch key, play button, stop key, upper page turning key, lower page turning key and loudspeaker; Power switch key, play button, stop key, upper page turning key, lower page turning key are all connected with microprocessor, and loudspeaker is connected with voice playing module, as audio output device.
The present invention has following beneficial effect:
Present invention utilizes faraday electromagnetic induction effect, after energising, solenoid electromagnet produces suction, the actuator promoted in the display module of braille contact moves upward, and realizes the projection of braille contact, after power-off, under the effect of back-moving spring, realize the reset of braille contact.
The present invention meets the arranging rule of Braille, is applicable to the reading habit of blind person, and constructional device is exquisite, the control of braille contact is easy to realize, braille can be generated fast and the braille that upgrades in time, contribute to the reading efficiency and the quality of life that improve blind person, sum up and there is following effect:
(1) the braille display device structure of hierarchical design is exquisite, not only meets the requirement of braille contact resolution, and greatly reduces the difficulty of processing and manufacturing and assembling.
(2) electromagnetic type drives braille display, and not only starting material are easy to obtain, and is easy to the lifting controlling braille contact.
(3) Braille number can be expanded, to meet the personalized reading requirement of blind person.
(4) little, the lightweight blind person of being convenient to of volume carries.
(5) relative to the braille display device of commercialization, cost of the present invention low (cost of raw material is low and processing and manufacturing cost is low), be conducive to popularizing of Braille reading machine, allow most of blind person disadvantaged group be benefited, there is huge economic outlook and social value.
Accompanying drawing explanation
Fig. 1 is outside drawing of the present invention.
Fig. 2 is inner structure schematic diagram of the present invention.
Fig. 3 is general structure explosive view of the present invention.
Fig. 4 is 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 of multirow braille display.
In figure: 1 is power switch key, 2 is play button, 3 is stop key, 4 is upper page turning key, 5 is lower page turning key, 6 is loudspeaker, 7 is braille contact, 8 is ground floor braille display module, 9 is second layer braille display module, 10 is third layer braille display module, 11 is stationary shaft, 12 is coil, 13 is iron core, 14 is back-moving spring, 15 is driving needle, 16 is pin cap, 17 is touch pad, 18 is casing, 19 is circuit board, 20 is iron core plate, 21 is sleeve, 22 is pressing plate, 23 is fixed head, 24 is base plate, 25 is drive block, 26 is armature, 27 is runners, 28 is fixing feet, 29 is coil holder.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, layered electromagnetic formula Braille reading machine of the present invention comprises:
Comprise braille translation modular converter, voice playing module, microprocessor, contactor controller, braille display device; 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 display, and the ordinary electronic text-processing of input is that voice signal is sent to voice playing module and synchronously plays by microprocessor;
Wherein, microprocessor is connected with contactor controller by serial ports, controls contactor controller to braille display device output current signal, and under the effect of energising, braille display device completes the braille display task of specifying.
Above-mentioned braille translation modular converter can adopt maximum bi-directional matching method, by ordinary electronic text file participle, again the ordinary electronic text file after participle is converted to ordinary electronic phonetic file, be separated by space between the phonetic of each vocabulary, then again ordinary electronic phonetic is converted to braille phonetic code, finally by braille phonetic code combination producing braille text, realize the conversion of ordinary electronic word and braille text.
Above-mentioned voice playing module can adopt JXW0213-080M speech chip, the Word message read from ordinary electronic text coding is sent to database, carry out numerical information conversion, again the numerical information after conversion is sent to audio output apparatus (loudspeaker 6 as Fig. 1), thus realizes the broadcasting of voice.
Microprocessor can adopt ARM1026EJ-S, and volume is little, low-power consumption, high-performance, and instruction execution speed is fast, in microprocessor, ordinary electronic file transform is become braille file.
Contactor controller can adopt CMOS integrated circuit to complete control to braille contact.
As depicted in figs. 1 and 2, braille display device of the present invention is specially: comprise third layer braille display module 10, second layer braille display module 9, ground floor braille display module 8 and the touch pad 17 installed successively from below to up; 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 cap of the top as casing 18, are fixed on one with casing; 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, and Braille lattice show a Braille, and each Braille lattice have six braille contacts.
The sum of Braille lattice of the present invention can increase by line number, row is set to 5 ~ 6mm with the spacing of row by national standard (GB/T15720-2008), often the quantity of row Braille lattice is identical, the whole page display of multirow Braille can be realized, as shown in Figure 9, the daily reading habit of blind person is more met; Braille lattice often increase a line, and the contact driving mechanism in ground floor braille display module 8, second layer braille display module 9 and third layer braille display module 10 all needs 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 include from lower to upper base plate 24, fixed head 23, pressing plate 22, iron core plate 20, circuit board 19 and the many groups contact driving mechanism corresponding to each Braille lattice that parallel arrangement is successively installed; Often row Braille lattice have six groups of contact driving mechanisms, contact driving mechanism is expanded according to the quantity (i.e. the number of Braille) of every row Braille lattice, contact driving mechanism is arranged on each braille display module, contact driving mechanism, for driving projection and the reset of braille contact, is that a unit is arranged in ground floor braille display module 8, second layer braille display module 9 and third layer braille display module 10 respectively with two groups in six groups of contact driving mechanisms; Ground floor braille display module 8, second layer braille display module 9 and third layer braille display module 10 the contact driving mechanism group number of every layer be two times of the line number of Braille lattice.
As shown in Figure 4 and Figure 5, the above-mentioned contact driving mechanism often organized comprises the identical and driven unit arranged uniformly at intervals of multiple structure, the quantity of driven unit is equal with the quantity of Braille lattice in every row Braille lattice, and a driven unit controls a braille contact of Braille lattice; Driven unit comprises contact actuator, back-moving spring 14, coil member, iron core 13 and pin cap 16, contact actuator is arranged between fixed head 23 and pressing plate 22, back-moving spring 14, coil member and iron core 13 is arranged between pressing plate 22 and iron core plate 20, pin cap 16 is positioned at actuator top, contact and is arranged on touch pad 17, as the braille contact that blind person touches.
As shown in Figure 6, above-mentioned contact actuator comprises driving needle 15, drive block 25, armature 26 and stationary shaft 11, driving needle 15 lower end is fixedly connected with drive block 25 one end, upper end and pin cap 16 are fixed, drive block 25 other end is hinged in the groove on fixed head 23 by stationary shaft 11, and driving needle 15 upper end is connected with the pin cap 16 on touch pad 17 through after pressing plate 22, back-moving spring 14, iron core plate 20 and circuit board 19 successively.
As shown in figure 5 and figure 7, above-mentioned coil member comprises coil holder 29 and coil 12, hole is opened at coil holder 29 center, coil 12 is around on coil holder 29, coil holder 29 lower end is provided with the runners 27 for connecting drive block 25, it is fixing on circuit boards through iron core plate 20 that coil holder 29 upper end is provided with two fixing feet, 28, two fixing feet 28, by two fixing feet 28 coil is fixed on iron core plate 20 and is connected with circuit board.
Armature 26 is provided with in the middle part of drive block 25, armature 26 is embedded in the central through hole of coil holder 29 through the groove on pressing plate 22, the runners 27 of coil holder 29 lower end is stuck on drive block 25 through pressing plate 22 to be fixed drive block 25 position, and contact actuator is along fixing orbiting motion; Iron core 13 is fixed on iron core plate 20 bottom surface and is arranged in the central through hole of coil holder 29, and base plate 24 is fixed on fixed head 23 bottom surface, is positioned at the bottom of braille display module.
As shown in Figure 8, arrange with Braille form in the braille contact of Braille lattice, each Braille lattice comprise six with the braille contact of the uniform arrangement of 2 × 3 fixed 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 driving mechanism drives thirdly braille contact and the 4th the braille contact of often row Braille lattice respectively, achieves highlighting and resetting of these two contacts; In second layer braille display module 9, contact driving mechanism drives second point braille contact and the 5th the braille contact of often row Braille lattice respectively, achieves highlighting and resetting of these two contacts; In third layer braille display module 10, contact driving mechanism drives first braille contact and the 6th the braille contact of often row Braille lattice respectively, achieves highlighting and resetting of these two contacts.
As shown in Figure 8, the pin cap 16 of braille contact is as contact, its shape is generally semisphere or paraboloidal, be point of fixity distance between six the braille contacts often organizing braille contact sets, in three row two row arrangements, contact base diameter is 1.0 ~ 1.6mm, height is 0.2 ~ 0.5mm, some distance is 2.2 ~ 2.8mm, side's distance is 3.5 ~ 4.0mm.
Function key area on touch pad 17, comprises 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 broadcasting and the stopping of voice, and stop key 3 realizes time-out and the recovery of braille display and speech play, and upper page turning key 4 and lower page turning key 5 can realize the page-turning function up and down read.
Present invention utilizes galvanomagnetic effect, during energising, the suction produced by electromagnet (being made up of coil 12 and iron core 13) realizes the projection of braille contact, during power-off, under the effect of back-moving spring 14, realizes the reset of braille contact.A point in the corresponding Braille in each braille contact, different contact highlight form, represent different Brailles.
After circuit ON, electric current is had to flow through in coil 12, under the effect of electric current, electromagnet two ends produce electromagnetic force, under the effect of electromagnetic force, armature 26 on drive block is attracted to the iron core 13 be fixed on iron core plate, under the drive of armature 26, the driving needle 15 on drive block moves upward, and makes it form contact on touch pad 17 surface, six contacts show according to output needs, constitute the significant Braille of tool.
After circuit disconnects, the electric current in coil 12 is 0, and the electromagnetic force that now electromagnet two ends produce disappears, be in the back-moving spring 14 of compressive state, have downward acting force to driving needle 15, cause driving needle 15 to move downward, the contact of original formation will disappear, and driving needle 15 returns to original position.
A specific embodiment of the present invention as shown in Figure 1, Figure 4 and Figure 5, touch pad 17 has a line Braille lattice, can show 20 Brailles, and each Braille lattice have six braille contacts, and touch pad 17 has 120 braille contacts.Ground floor braille display module 8, second layer braille display module 9, third layer braille display module 10 all have two groups of contact driving mechanisms, often organize contact driving mechanism and comprise 20 driven units, amount to 120 driven units, corresponding 120 the braille contacts driven on touch pad 17 respectively, control projection and the reset of braille contact.Be spaced apart 3.5mm between adjacent two braille contact sets, the distance of contact and contact is 2.5mm.The sum of Braille lattice of the present invention can increase by line number, and as shown in Figure 9, touch pad has the capable Braille lattice of M, often row can show N number of Braille, and each Braille lattice have six braille contacts, then touch pad 17 has 6 × M × N number of braille contact.Ground floor braille display module 8, second layer braille display module 9, third layer braille display module 10 all have 2 × M group contact driving mechanism, often organize contact driving mechanism and comprise N number of driven unit, amount to 3 × 2 × M × N number of driven unit, respectively the corresponding 6 × M × N number of braille contact driven on touch pad 17.
The course of work of the present invention is as follows:
1) layered electromagnetic formula Braille reading machine original state is not for show braille, and braille contact 7 is in the hole of touch pad 17; The duty of Braille reading machine is display braille, and braille contact 7 exceeds the plane of touch pad 17, forms contact.
2) during original state, microprocessor sends not display command by serial ports to the contactor controller in braille display device, driving needle 15 is in initial position, electric current in contactor controller access failure circuit board 19, does not have electric current to pass through in solenoid 12, braille display module 8,9, all do not have electromagnetic force to produce in 10, drive block 25 is not by the effect of 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 transfer process of braille to display braille: microprocessor sends display command by serial ports to the contactor controller in braille display device; Contactor controller, according to the order received, connects the electric current of interlock circuit in circuit board 19; There is electric current to pass through in solenoid 12, braille display module 8,9, in 10, have electromagnetic force to produce; Drive block 25, by the effect of electromagnetic force, drives driving needle 15 to be moved upward by initial position, until arrive display position, under the acting in conjunction of electromagnetic force and back-moving spring 14, drive block 25 stop motion, driving needle 15 remains on display position.Meanwhile, microprocessor sends play command by serial ports to voice playing module, realizes the broadcasting of voice.
4) after circuit ON, electric current is had to flow through in coil 12, under the effect of electric current, electromagnet two ends produce electromagnetic force, under the effect of electromagnetic force, the armature 26 on drive block 25 is attracted to fixing iron core 13, under drive block 25 drives, driving needle 15 moves upward, and makes the pin cap 16 on fixed drive pin form contact one by one on touch pad 17 surface.These contacts just constitute the Braille with definite meaning.
5) in the layered electromagnetic formula Braille reading machine course of work, microprocessor can receive the instruction of function key on touch pad 17, and controls relevant function key work according to the instruction of receiving.Function key area on touch pad 17, comprises 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 broadcasting and the stopping of voice, and stop key 3 realizes time-out and the recovery of braille display and speech play, and upper page turning key 4 and lower page turning key 5 can realize the page-turning function up and down read.
6) state of layered electromagnetic formula Braille reading machine is by showing braille to the transfer process not showing braille: microprocessor sends reset command by serial ports to the contactor controller in braille display device; Contactor controller according to the order received, the electric current of all circuit in disconnecting circuit plate 19; Electric current in solenoid 12 disconnects, braille display module 8,9, and the electromagnetic force in 10 disappears; Drive block 25 is no longer by the effect of electromagnetic force, and under the effect of back-moving spring 14, drive block 25 moves downward, and driving needle 15 returns to initial position by display position.Meanwhile, microprocessor sends stopping play command by serial ports to voice playing module, thus stops the broadcasting of voice.
7) after circuit disconnects, electric current in coil 12 is 0, the electromagnetic force that electromagnet two ends produce disappears, now be in the back-moving spring 14 of compressive state, have downward acting force of the spring to drive block 25, drive block 25 moves downward, and causes driving needle 15 to move downward thereupon, the braille contact of original formation disappears, and driving needle 15 returns to original position.
Above-mentioned embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (10)
1. a braille display device for layered electromagnetic formula, is characterized in that: comprise third layer braille display module (10), second layer braille display module (9), ground floor braille display module (8) and the touch pad (17) installed successively from below to up; 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 cap of the top 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, and Braille lattice show a Braille, and 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 loudspeaker (6).
2. the braille display device of a kind of layered electromagnetic formula according to claim 1, is characterized in that: described ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) include from lower to upper base plate (24), fixed head (23), pressing plate (22), iron core plate (20), circuit board (19) and the many groups contact driving mechanism corresponding to each Braille lattice that parallel arrangement is successively installed; Often row Braille lattice have six groups of contact driving mechanisms, six groups of contact driving mechanisms, for driving projection and the reset of braille contact, are that a unit is arranged in ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) respectively with two groups in six groups of contact driving mechanisms.
3. the braille display device of a kind of layered electromagnetic formula according to claim 2, it is characterized in that: described contact driving mechanism of often organizing comprises the identical and driven unit arranged uniformly at intervals of multiple structure, the quantity of driven unit is equal with the quantity of Braille lattice in every row Braille lattice, and a driven unit controls a braille contact of Braille lattice;
Driven unit comprises contact actuator, back-moving spring (14), coil member, iron core (13) and pin cap (16), contact actuator is arranged between fixed head (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), pin cap (16) is positioned at actuator top, contact and is arranged on touch pad (17), as the braille contact that blind person touches;
Contact actuator comprises driving needle (15), drive block (25), armature (26) and stationary shaft (11); Driving needle (15) lower end is fixedly connected with drive block (25) one end, drive block (25) other end is hinged in the groove on fixed head (23) by stationary shaft (11), and driving needle (15) upper end is connected with the pin cap (16) on touch pad (17) with circuit board (19) afterwards through pressing plate (22), back-moving spring (14), iron core plate (20) successively;
Coil member comprises coil holder (29) and coil (12), hole is opened at coil holder (29) center, coil (12) is around 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) to be fixed drive block (25) position; Iron core (13) is fixed on iron core plate (20) bottom surface and is arranged in the central through hole of coil holder (29), and base plate (24) is fixed on fixed head (23) bottom surface, is positioned at the bottom of braille display module.
4. according to the arbitrary described a kind of layered electromagnetic formula Braille reading machine of claim 1 ~ 3, it is characterized in that: described each Braille lattice comprise six braille contacts arranged uniformly at intervals with 2 × 3, 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 driving mechanism drives thirdly braille contact and the 4th the braille contact of often row Braille lattice respectively, in second layer braille display module (9), contact driving mechanism drives second point braille contact and the 5th the braille contact of often row Braille lattice respectively, and in third layer braille display module (10), contact driving mechanism drives first braille contact and the 6th the braille contact of often row Braille lattice respectively.
5. a Braille reading machine for layered electromagnetic formula, is characterized in that: comprise braille translation modular converter, voice playing module, microprocessor, contactor controller and described braille display device; 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 display, and the ordinary electronic text-processing of input is that voice signal is sent to voice playing module and plays by microprocessor;
Braille display device comprises third layer braille display module (10), second layer braille display module (9), ground floor braille display module (8) and the touch pad (17) installed successively from below to up; 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 cap of the top 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, and Braille lattice show a Braille, and each Braille lattice have six braille contacts.
6. the Braille reading machine of a kind of layered electromagnetic formula according to claim 5, is characterized in that: described ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) include from lower to upper base plate (24), fixed head (23), pressing plate (22), iron core plate (20), circuit board (19) and the many groups contact driving mechanism corresponding to each Braille lattice that parallel arrangement is successively installed;
Often row Braille lattice have six groups of contact driving mechanisms, six groups of contact driving mechanisms, for driving projection and the reset of braille contact, are that a unit is arranged in ground floor braille display module (8), second layer braille display module (9) and third layer braille display module (10) respectively with two groups in six groups of contact driving mechanisms.
7. the Braille reading machine of a kind of layered electromagnetic formula according to claim 6, it is characterized in that: described contact driving mechanism of often organizing comprises the identical and driven unit arranged uniformly at intervals of multiple structure, the quantity of driven unit is equal with the quantity of Braille lattice in every row Braille lattice, and a driven unit controls a braille contact of Braille lattice; Driven unit comprises contact actuator, back-moving spring (14), coil member, iron core (13) and pin cap (16), contact actuator is arranged between fixed head (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), pin cap (16) is positioned at actuator top, contact and is arranged on touch pad (17), as the braille contact that blind person touches.
8. the Braille reading machine of a kind of layered electromagnetic formula according to claim 7, is characterized in that: described contact actuator comprises driving needle (15), drive block (25), armature (26) and stationary shaft (11); Driving needle (15) lower end is fixedly connected with drive block (25) one end, drive block (25) other end is hinged in the groove on fixed head (23) by stationary shaft (11), and driving needle (15) upper end is connected with the pin cap (16) on touch pad (17) with circuit board (19) afterwards through pressing plate (22), back-moving spring (14), iron core plate (20) successively;
Described coil member comprises coil holder (29) and coil (12), hole is opened at coil holder (29) center, coil (12) is around 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) to be fixed drive block (25) position; Iron core (13) is fixed on iron core plate (20) bottom surface and is arranged in the central through hole of coil holder (29), and base plate (24) is fixed on fixed head (23) bottom surface, is positioned at the bottom of braille display module.
9. according to the Braille reading machine of the arbitrary described a kind of layered electromagnetic formula of claim 5 ~ 8, it is characterized in that: described each Braille lattice comprise six braille contacts arranged uniformly at intervals with 2 × 3, 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 driving mechanism drives thirdly braille contact and the 4th the braille contact of often row Braille lattice respectively, in second layer braille display module (9), contact driving mechanism drives second point braille contact and the 5th the braille contact of often row Braille lattice respectively, and in third layer braille display module (10), contact driving mechanism drives first braille contact and the 6th the braille contact of often row Braille lattice respectively.
10., according to the Braille reading machine of the arbitrary described a kind of layered electromagnetic formula of claim 5 ~ 8, it is characterized 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 loudspeaker (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 loudspeaker (6) is connected with voice playing module, as audio output device.
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