CN108281070A - Permanent magnetism self-locking linear drives type braille contact pilotage shows structure - Google Patents
Permanent magnetism self-locking linear drives type braille contact pilotage shows structure Download PDFInfo
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- CN108281070A CN108281070A CN201810222894.7A CN201810222894A CN108281070A CN 108281070 A CN108281070 A CN 108281070A CN 201810222894 A CN201810222894 A CN 201810222894A CN 108281070 A CN108281070 A CN 108281070A
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- 230000005389 magnetism Effects 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000009471 action Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000004438 eyesight Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001149 cognitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
- G09B21/004—Details of particular tactile cells, e.g. electro-mechanical or mechanical layout
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- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
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Abstract
The invention discloses a kind of permanent magnetism self-locking linear drives type braille contact pilotages to show structure.Including touch tablet, cover board, shell, bottom plate and circuit board；Cage connection forms the space for installing touch driving unit of inner hollow between cover board bottom surface and plate top surface, and cover board top surface connecting cover plate, bottom plate bottom surface connects circuit board；It touches after driving unit upper end passes through cover board and stretches out touch tablet, touch after driving unit lower end passes through bottom plate and connect with circuit board, it includes needle cap, thimble, upper permanent magnet, iron core, electromagnetic coil and lower permanent magnet to touch driving unit.The present invention uses solenoid controlled, and drive part fast response time, display module refresh rate is high, low in energy consumption, small, light-weight.
Description
Technical field
The present invention relates to a kind of brailles to show structure, more particularly, to a kind of permanent magnetism self-locking linear drives type braille
Contact pilotage shows that structure, main application belong to mechanical engineering field on related braille reader or braille equipment.
Technical background
According to the World Health Organization (WHO) in population in the world data statistics in 2010 the results show that in worldwide
Damage interior, that about 2.85 hundred million people have eyesight different degrees of, wherein damaging more serious blind person's quantity about 39,000,000.
The country most as population in the world of China, while being also the most country of world's blind person's quantity.Therefore, for so it is huge and
Important blind community, society need give them care about and support, while they also there is an urgent need to obtain good study ring
Border and culture and education.
Due to visual impairment, blind person cannot as person of good sense come normally learn and read, blind person can only by tactile,
The sense of hearing and some remaining eyesights obtain external environment information, and the tactilely-perceptible touched at present by finger, and blind person can be with
The information such as word or image are obtained, are the main paths that blind person obtains external information.
Blind person is to read books printed in braille by tactile, and the quantity of books printed in braille is also very limited, cannot be satisfied blind person couple
The demand of knowledge.And the cost of manufacture of books printed in braille is relatively high, and fabrication cycle is long, and the requirement to paper is also very stringent,
It is not easy to preserve for a long time, type and content are also very limited.With the progress of the development and science and technology of society, in order to help blind person can
Preferably read and study, need research and development it is a kind of it is at low cost, experience sense is strong, easy to carry, fast response time, it can be achieved that read immediately
Read, can fast refresh, the pixel of vision is substituted for the Braille alphabet reading device of contact.
Braille (Braille), also referred to as braille, type are to design a kind of character read by tactile exclusively for blind person.
Blind person reads word, obtains knowledge by touching braille salient point.Braille is by French blind person Louis Brian earliest
(LouisBraille) in 1824 in Paris invention, the braille that Louis Brian is invented at present is by internationally recognized for just
Formula braille, there has also been braille national standard (GB/T15720-2008) at present for China.It is Braille reading that braille, which touches driving unit,
Important component part in device, domestic and international researcher have developed different driving structures based on different driving principles, mainly
Including type of drive such as piezoelectric ceramics, electro photoluminescence, memorial alloy, pneumatic, temperature control, electromagnetism and other new materials.
Although having occurred the tactile ancillary equipment of many similar functions on the market at present, cost and price are excessively
It is high, and power consumption is also very big, although other small-size equipment cost is controlled, it is general tactile to have violated blind person
Custom is touched, interactive mode and interactive experience are bad.Therefore, a small power consumption, cheap, safe and reliable braille are developed
The aobvious module of point shows the exploitation of device and popularize to Braille alphabet reading device or braille point provides possibility, has important value.
Invention content
The present invention is directed to the deficiency of existing braille contact driving mechanism, it is proposed that a kind of permanent magnetism self-locking linear drives type is blind
Literary contact pilotage shows structure, and it is the important component that braille point shows device and Braille alphabet reading device which, which shows module, is suitble to
The Braille of all languages and form of ownership generates, while the module can not only improve blind person's reading rate, also very great Cheng
Degree reduces power consumption.
The technical solution adopted by the present invention to solve the technical problems is：
The present invention includes touch tablet, cover board, shell, bottom plate and circuit board；Cage connection is in cover board bottom surface and plate top surface
Between formed inner hollow for install the space for touching driving unit, cover board top surface connecting cover plate, the connection of bottom plate bottom surface is electric
Road plate；Touch after driving unit upper end passes through cover board and stretch out touch tablet, touch driving unit lower end pass through after bottom plate with circuit board
Connection.
The touch driving unit includes needle cap, thimble, upper permanent magnet, iron core, electromagnetic coil and lower permanent magnet；Electromagnetism
Coil is fixed on bottom plate, and iron core lower end is fixed with core bar, and core bar is inserted into electromagnetic coil interstitial hole, and electromagnetic coil lower end is set
It is connect with circuit board after thering is draw pin, draw pin to pass through bottom plate, the bottom plate below electromagnetic coil is equipped with lower permanent magnet, lower permanent magnet position
Immediately below the end of iron core core bar；Cover board bottom surface above iron core is fixed with permanent magnet, and iron core upper end is fixed with thimble, top
Needle and core bar are co-axially mounted, and thimble top is connect after passing through the through-hole on upper permanent magnet and cover board with needle cap, and needle cap is movably
It is placed in the vestibule of touch tablet.It moves up and down with no power lower band dynamic iron core under electromagnetic coil energization, and then needle cap is driven to stretch
Go out outside the vestibule of touch tablet or be placed in the hole intracavitary of touch tablet.
The present invention is in working position and under being not powered on, and needle cap is maintained at high-order by overcoming gravity to stretch out cover board under magnetic thrust,
Permanent magnetism self-locking is formed, braille contact pilotage autonomous control is driven.
Two magnetic poles of the upper permanent magnet and lower permanent magnet are arranged along the vertical direction, and magnetic pole arranged direction is opposite.
The electromagnetic coil bottom is embedded in the groove of bottom plate.
The draw pin wears out circuit board after being welded to circuit board behind the draw pin hole of bottom plate.
The upper permanent magnet interference fit ground is in the groove of cover board.
Include eight touch driving units, eight touch driving unit distribution and arranged in 2*4 arrays, form 8 brailles
Touch-control.
The touch driving unit is all connected with control circuit board, and the positive counter current of electromagnetic coil is controlled by control circuit board
Input so that iron core generates different magnetic poles, according to the principle that identical charges repel each other, there is a natural attraction between the sexes, iron core upper permanent magnet and under
Under the action of permanent magnet, upper and lower movement is realized.
Pitch of holes on the touch tablet corresponds to the distance between each needle cap, while the lifting height of needle cap complies with standard
The requirement of Braille.
The invention has the advantages that：
1, the present invention uses solenoid controlled, and drive part fast response time, display module refresh rate is high, power consumption
It is low, small, light-weight, stability is good, reliability is high, power consumption can be substantially reduced, economized on resources.
2, the present invention can random combine arrangement, a kind of replaced with fast refresh, by the pixel of vision to produce
At the blind touch cognitive device of contact.
Description of the drawings
Fig. 1 is 8 braille display module outside drawings of folk prescription of the present invention.
Fig. 2 is 8 braille display module interior views of folk prescription of the present invention.
Fig. 3 is 8 braille display module side sectional views of folk prescription of the present invention.
Fig. 4 is single needle structural schematic diagram of the present invention.
Fig. 5 is single needle driving principle figure of the present invention.
Fig. 6 is Braille alphabet reading device schematic diagram of the present invention.
In figure：Touch tablet 10, cover board 20, needle cap 30, thimble 40, upper permanent magnet 50, shell 60, iron core 70, electromagnetic coil
80, lower permanent magnet 90, bottom plate 100, circuit board 110, draw pin 120.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 3, Figure 4, the present invention includes touch tablet 10, cover board 20, needle cap 30, thimble 40, upper permanent magnet 50, shell
60, iron core 70, electromagnetic coil 80, lower permanent magnet 90, bottom plate 100, circuit board 110, draw pin 120.Wherein, as shown in Figure 1, touching
Plate 10, cover board 20, shell 60, bottom plate 100 and circuit board 110 are fixedly connected integrally from top to bottom successively, and shell 60 is connected to
The space for installing touch driving unit of inner hollow is formed between 100 top surface of 20 bottom surface of cover board and bottom plate, cover board 20 pushes up
Face connecting cover plate 20,100 bottom surface of bottom plate connect circuit board 110；Mainly installation touches driving unit in shell 60, and it is single to touch driving
Touch tablet 10 is stretched out in first upper end after passing through cover board 20, touches after driving unit lower end passes through bottom plate 100 and is connect with circuit board 110.
As shown in Figure 3, Figure 4, it includes needle cap 30, thimble 40, upper permanent magnet 50, iron core 70, electromagnetic wire to touch driving unit
Circle 80 and lower permanent magnet 90；Electromagnetic coil 80 is fixed on 60 inner wall of shell, and 70 lower end of iron core is fixed with core bar, and core bar is inserted into electricity
In 80 interstitial hole of magnetic coil, 80 lower end of electromagnetic coil is equipped with draw pin 120, and draw pin 120 connects after passing through bottom plate 100 with circuit board 110
It connects, the bottom plate 100 of the lower section of electromagnetic coil 80 is equipped with lower permanent magnet 90, under lower permanent magnet 90 is located at the end of 70 core bar of iron core just
Side；20 bottom surface of cover board of 70 top of iron core is fixed with permanent magnet 50, and 70 upper end of iron core is fixed with thimble 40, thimble 40 and core bar
It is co-axially mounted, 40 top of thimble is connect after passing through the through-hole on upper permanent magnet 50 and cover board 20 with needle cap 30, and needle cap 30 is movable
Ground is placed in the vestibule of touch tablet 10, and touch tablet 10 is provided with the vestibule moved up and down for needle cap 30.
In specific implementation, lower permanent magnet 90 respectively be inserted in the lower recess of electromagnetic coil 80 by correspondence, and the two is connected, electromagnetism
The bottom of coil 80 is respectively embedded in the groove of bottom plate 100, is fixed by glue, while ensureing that draw pin 120 passes through bottom plate 100
Draw pin hole, convenient for after circuit board 110 welding, iron core 70 is inserted into the interstitial hole of electromagnetic coil 80 respectively, upper permanent magnetism
50 interference of iron is fixed in the groove of cover board 20, in the assembling process of upper and lower permanent magnet, it is ensured that the magnetic pole of upper and lower permanent magnet
Installation is correct, as shown in Figure 5.
Specific implementation is as shown in Fig. 2, a braille contact pilotage display unit shows one " side " of Braille, one " side "
Be eight sags and crests permutation and combination being formed by different height of four rows two row represented by totally eight pieces of contact pilotages together, each piece is tactile
Needle is driven by an electromagnetic coil, and a total of eight touches driving unit of the module, it is in 2*4 times that eight, which touch driving unit distribution,
Row arrangement, forms 8 braille touch-controls.
After the drive part of one " side " all installs, shell 60 is put on, shell 60, which is fixed with bottom plate 100 by glue, to be connected
It connecing, covers cover board 20, cover board 20 is fixedly connected with shell 60 by glue, thimble 40 is inserted into the upper grooves of iron core 70,
It being formed and is connected, needle cap 30 is fixed on the top of thimble 40 by glue, covers touch tablet 10, the bottom embedded circuit plate 110 of module,
Wherein ensure that draw pin 120 passes through the draw pin hole on circuit board 110, and draw pin 120 and circuit board 120 are welded.
Working principle of the present invention is as follows：
As shown in Fig. 3,5, illustrate by taking one of single needle driving structure as an example, by being powered to electromagnetic coil 80 to make
It obtains iron core both ends and generates magnetic field, upper end is the poles N at this time, and lower end is the poles S, according to the principle that identical charges repel each other, there is a natural attraction between the sexes so that iron
70 upper end of core and upper permanent magnet 50 are attracting, and 70 lower end of iron core is repelled each other with lower permanent magnet 90, at both ends under the action of magnetic force, iron core to
Upper movement, push needle cap move upwards, formed salient point, at this time turn-off current, needle cap 30 will not return to lowest order because on forever
Magnet 50, which firmly attracts iron core 70, makes it not fall under gravity, reduces power consumption；When work need not be formed
When making position, then to electromagnetic coil lead to reverse current, upper end is the poles S at this time, and lower end is the poles N, under the influence of a magnetic field, on iron core 70
End is repelled each other with upper permanent magnet 50, and 70 lower end of iron core and lower permanent magnet 90 are attracting, and at both ends under the action of magnetic force, iron core 70 is transported downwards
It is dynamic so that needle cap 30 moves downward, and forms concave point, this is a work period, and as shown in Fig. 3,5, the left side indicates wherein in figure
Working position, the right indicate inoperative position.
By the drive control to single needle, the control to " side " 8 display modules is formed, it can shape according to salient point difference
At different Brailles, being finally combined into can show for the permanent magnetism self-locking linear drives type braille contact pilotage that blind person can use
Show module, as shown in Figure 1.Eventually by the assembly that the combination of individual module may be implemented different reading devices, here with 5 ×
For 5, as shown in Figure 6.The braille that M rows N row can be formed by the various combination to module touches reading device, shares at this time
8 × M × N number of contact, the device can be not only that blind person reads Braille, but also may also help in blind person and touch reading figure
Picture largely increases the mode that blind person obtains information.
Claims (9)
1. a kind of permanent magnetism self-locking linear drives type braille contact pilotage shows structure, it is characterised in that：Including touch tablet (10), cover board
(20), shell (60), bottom plate (100) and circuit board (110)；Shell (60) is connected to cover board (20) bottom surface and bottom plate (100) top
The space for installing touch driving unit of inner hollow, cover board (20) top surface connecting cover plate (20), bottom plate are formed between face
(100) bottom surface connection circuit board (110)；It touches driving unit upper end and stretches out touch tablet (10) afterwards across cover board (20), touch and drive
Moving cell lower end is connect with circuit board (110) afterwards across bottom plate (100).
2. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 1 shows structure, it is characterised in that：
The touch driving unit include needle cap (30), thimble (40), upper permanent magnet (50), iron core (70), electromagnetic coil (80) and
Lower permanent magnet (90)；Electromagnetic coil (80) is fixed on shell (60) inner wall, and iron core (70) lower end is fixed with core bar, and core bar is inserted into
In electromagnetic coil (80) interstitial hole, electromagnetic coil (80) lower end be equipped with draw pin (120), draw pin (120) pass through bottom plate (100) afterwards with
Circuit board (110) connects, and the bottom plate (100) below electromagnetic coil (80) is equipped with lower permanent magnet (90), lower permanent magnet (90) position
Immediately below the end of iron core (70) core bar；Cover board (20) bottom surface above iron core (70) is fixed with permanent magnet (50), iron core
(70) upper end is fixed with thimble (40), and thimble (40) and core bar are co-axially mounted, thimble (40) top pass through upper permanent magnet (50) and
It is connect with needle cap (30) after through-hole on cover board (20), needle cap (30) is movably placed in the vestibule of touch tablet (10).
3. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
Two magnetic poles of the upper permanent magnet (50) and lower permanent magnet (90) are arranged along the vertical direction, and magnetic pole arranged direction is opposite.
4. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
Described electromagnetic coil (80) bottom is embedded in the groove of bottom plate (100).
5. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
The draw pin (120) wears out circuit board (110) after being welded to circuit board (110) behind the draw pin hole of bottom plate (100).
6. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
Upper permanent magnet (50) the interference fit ground is in the groove of cover board (20).
7. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
Include eight touch driving units, eight touch driving unit distribution and arranged in 2*4 arrays, form 8 braille touch-controls.
8. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
The touch driving unit is all connected with control circuit board, and the defeated of the positive counter current of electromagnetic coil (80) is controlled by control circuit board
Enter so that iron core (70) generates different magnetic poles, according to the principle that identical charges repel each other, there is a natural attraction between the sexes, and iron core (70) is in upper permanent magnet
(50) and under the action of lower permanent magnet (90), upper and lower movement is realized.
9. a kind of permanent magnetism self-locking linear drives type braille contact pilotage according to claim 2 shows structure, it is characterised in that：
Pitch of holes on the touch tablet (10) corresponds to the distance between each needle cap (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810222894.7A CN108281070A (en) | 2018-03-19 | 2018-03-19 | Permanent magnetism self-locking linear drives type braille contact pilotage shows structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810222894.7A CN108281070A (en) | 2018-03-19 | 2018-03-19 | Permanent magnetism self-locking linear drives type braille contact pilotage shows structure |
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| CN201810222894.7A Pending CN108281070A (en) | 2018-03-19 | 2018-03-19 | Permanent magnetism self-locking linear drives type braille contact pilotage shows structure |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192008A (en) * | 2018-10-15 | 2019-01-11 | 浙江理工大学 | A kind of aobvious module of low energy consumption electromagnetic draw bar formula braille point |
| CN110033674A (en) * | 2019-01-17 | 2019-07-19 | 浙江理工大学 | Tactile sense reproduction rotary self-locking formula braille dot matrix display device |
| CN110176192A (en) * | 2019-06-13 | 2019-08-27 | 广东海洋大学 | A kind of electrical screen based on magnetic fluid |
| CN110444091A (en) * | 2019-08-30 | 2019-11-12 | 湖北楚天高速智能产业研究院有限公司深圳分公司 | A kind of electromagnetic type braille reader, control system and application method |
| CN111081121A (en) * | 2019-12-24 | 2020-04-28 | 北京三叶星云互动科技有限公司 | Linear driving device, touch display device and miniature electronic lock |
| CN111166656A (en) * | 2020-02-21 | 2020-05-19 | 张明 | Neurological acupuncture recovery instrument for neurology |
| CN111402686A (en) * | 2020-05-09 | 2020-07-10 | 长春大学 | Cam piston type braille point display |
| CN112349183A (en) * | 2020-11-11 | 2021-02-09 | 长春大学 | Refresh pneumatic film type touch display |
| CN112509435A (en) * | 2020-11-13 | 2021-03-16 | 长春大学 | Electromagnetic braille point display device with rotary contact pin |
| CN114495650A (en) * | 2021-12-29 | 2022-05-13 | 南京信息工程大学 | Magnetic traction type blind person reading equipment facing touch screen and reading method thereof |
| US11436943B2 (en) * | 2018-04-24 | 2022-09-06 | Polymer Braille Inc. | Magnetically programmable actuators for tactile conveyance of information |
| CN115171485A (en) * | 2022-08-04 | 2022-10-11 | 南京信息工程大学 | Electromagnetic drive type braille display device |
| EP4339922A1 (en) * | 2022-09-14 | 2024-03-20 | Karlsruher Institut für Technologie | Actuation mechanism, actuation device and methods for using said actuation mechanism and actuation device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11436943B2 (en) * | 2018-04-24 | 2022-09-06 | Polymer Braille Inc. | Magnetically programmable actuators for tactile conveyance of information |
| CN109192008A (en) * | 2018-10-15 | 2019-01-11 | 浙江理工大学 | A kind of aobvious module of low energy consumption electromagnetic draw bar formula braille point |
| CN109192008B (en) * | 2018-10-15 | 2020-10-20 | 浙江理工大学 | Low-energy-consumption electromagnetic pull rod type braille dot display module |
| CN110033674A (en) * | 2019-01-17 | 2019-07-19 | 浙江理工大学 | Tactile sense reproduction rotary self-locking formula braille dot matrix display device |
| CN110033674B (en) * | 2019-01-17 | 2024-02-23 | 浙江理工大学 | Touch sense reproduction rotary self-locking braille lattice display device |
| CN110176192A (en) * | 2019-06-13 | 2019-08-27 | 广东海洋大学 | A kind of electrical screen based on magnetic fluid |
| CN110444091A (en) * | 2019-08-30 | 2019-11-12 | 湖北楚天高速智能产业研究院有限公司深圳分公司 | A kind of electromagnetic type braille reader, control system and application method |
| CN111081121A (en) * | 2019-12-24 | 2020-04-28 | 北京三叶星云互动科技有限公司 | Linear driving device, touch display device and miniature electronic lock |
| CN111166656A (en) * | 2020-02-21 | 2020-05-19 | 张明 | Neurological acupuncture recovery instrument for neurology |
| CN111402686A (en) * | 2020-05-09 | 2020-07-10 | 长春大学 | Cam piston type braille point display |
| CN112349183A (en) * | 2020-11-11 | 2021-02-09 | 长春大学 | Refresh pneumatic film type touch display |
| CN112509435A (en) * | 2020-11-13 | 2021-03-16 | 长春大学 | Electromagnetic braille point display device with rotary contact pin |
| CN114495650A (en) * | 2021-12-29 | 2022-05-13 | 南京信息工程大学 | Magnetic traction type blind person reading equipment facing touch screen and reading method thereof |
| CN115171485A (en) * | 2022-08-04 | 2022-10-11 | 南京信息工程大学 | Electromagnetic drive type braille display device |
| EP4339922A1 (en) * | 2022-09-14 | 2024-03-20 | Karlsruher Institut für Technologie | Actuation mechanism, actuation device and methods for using said actuation mechanism and actuation device |
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