Braille point display device and control method thereof
By employing six Braille touch points and a driving component in the Braille display device, and using Gray code to convert binary encoding to control the Braille display, the problems of large size and high cost of existing devices are solved, achieving portability and convenience.
Patent Information
- Application Number
- CN202511836790.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-01-23
AI Technical Summary
Existing Braille reading devices are bulky, expensive, and have complex drive structures, failing to meet the portability and ease of use needs of blind people.
It employs six Braille contacts and several drive components. The drive components are extended and retracted by a control board to change the raised state of the Braille contacts. The binary code is converted using Gray code to achieve Braille display, simplifying the drive structure.
It achieves miniaturization, low cost, portability and use of Braille display devices, and convenient Braille display.
Smart Images
Figure CN121393271A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of Braille reading device, more precisely, to a Braille point display device and a control method thereof. BACKGROUND
[0002] Touch reading is the main reading method of the blind, which has the advantages of high recognition degree and fast reading speed. However, the traditional Braille books have the disadvantages of expensive special paper, complex manufacturing process, small amount of information, lagging information, inconvenience to carry, etc., which cannot meet the reading needs of the blind.
[0003] Therefore, some Braille reading devices appear in the field to convert the information in the traditional Braille books or electronic documents into dynamic Braille dots on the Braille reading device, so as to carry more information with smaller volume and weight, facilitate the blind to take and carry, and better meet the reading needs of the blind. The existing Braille reading devices generally drive the Braille touch point switching protrusions or flat states through magnetism, electricity, temperature change, and then display Braille text. The existing Braille reading devices generally have a large volume, and the driving structure is relatively complex, which needs to drive the touch points through multiple driving structures to change the display state, and the overall cost is high.
[0004] In summary, the field needs a Braille reading device with smaller volume, lower cost and convenient control, so as to improve the portability and use convenience of the device. SUMMARY
[0005] Therefore, the purpose of the present application is to provide a Braille point display device, which drives the Braille touch points installed on the top of the device to change the protruding state through a plurality of driving assemblies, so as to reduce the volume and use convenience of the Braille point display device.
[0006] Another purpose of the present application is to provide a control method of the Braille point display device.
[0007] In order to achieve the above purpose, the present application provides a Braille point display device, which comprises a shell, a plurality of driving assemblies, six Braille touch points and a control board. The top of the shell is provided with a top cover, and the top cover has six touch point holes arranged according to the positions of the Braille touch points. The Braille touch points are slidably installed in the touch point holes. The driving assemblies and the control board are installed inside the shell. The driving assemblies are arranged in parallel at the bottom of the Braille touch points, and each driving assembly corresponds to the same number of Braille touch points. The control board is electrically connected with the driving assemblies, and the driving assemblies are controlled to stretch and retract by the control board. The driving assemblies act on the six Braille touch points during the stretching and retracting process, so as to change the state of the six Braille touch points protruding from the top cover.
[0008] Preferably, the driving assembly comprises a push rod driving module, a guide rail and an electric push rod, the push rod driving module is fixedly connected with the inner wall of the shell, the electric push rod is in transmission connection with the push rod driving module, the guide rail is fixedly connected with the push rod driving module, and the electric push rod is arranged in the guide rail in a telescopic mode; the bottom of the Braille contact has a follower wheel, the Braille contact is in butt joint with the top surface of the electric push rod through the follower wheel at the bottom; the top surface of the electric push rod is provided with a plurality of spaced grooves and protrusions; when the follower wheel is in butt joint with the groove, the top of the Braille contact does not protrude from the top cover and is in a flush state; when the follower wheel is in butt joint with the protrusion, the top of the Braille contact protrudes from the top cover and is in a protruding state.
[0009] Preferably, two driving assemblies are arranged in parallel at the bottom of the Braille contact, and each driving assembly corresponds to three Braille contacts.
[0010] Preferably, the top surface of the electric push rod is divided into eight sections according to the protruding or flush state of the three Braille contacts corresponding to the electric push rod, and the electric push rod only changes the state of a single Braille contact when it is extended or retracted by a section length.
[0011] Preferably, three driving assemblies are arranged in parallel at the bottom of the Braille contact, and each driving assembly corresponds to two Braille contacts.
[0012] Preferably, the top surface of the electric push rod is divided into four sections according to the protruding or flush state of the two Braille contacts corresponding to the electric push rod, and the electric push rod only changes the state of a single Braille contact when it is extended or retracted by a section length.
[0013] Preferably, the control panel is provided with a controller, a driving module and a communication module, the driving module is in electrical connection with the driving assembly, the controller receives instructions from the communication module and controls the extension and retraction state of the driving assembly through the driving module.
[0014] Preferably, a battery is installed in the shell, and the battery is in electrical connection with the control panel.
[0015] Preferably, a power switch and a reading button group are installed on the shell, and the power switch and the reading button group are in electrical connection with the control panel.
[0016] The application provides a control method of a Braille point display device, and the Braille point display device comprises the following steps:
[0017] (1) the communication module receives the binary code of Braille that each driving component needs to drive to display, the raised state of the Braille contact is represented by 1, and the flush state of the Braille contact is represented by 0, and the communication module transmits the Braille code to the controller;
[0018] (2) the controller identifies the received Braille code, converts the Braille code from the Gray code to the normal binary code N, and subtracts the current displayed normal binary code S from the normal binary code, calculates the difference D between N and S, D=N-S;
[0019] (3) when D is positive, the controller controls the driving component to contract D section lengths; when D is negative, the controller controls the driving component to extend D section lengths; and the corresponding Braille is displayed;
[0020] (4) the controller updates the current position code S=D, and prepares to receive a new Braille code.
[0021] Compared with the prior art, the Braille point display device and the control method thereof have the advantages that the Braille point display device can display all Braille, has a small volume, is convenient to carry, and is convenient for the blind to use; the overall cost of the Braille point display device is low; and the Braille point display device displays Braille based on a six-bit Gray code, and the control method is simple. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0023] As shown in Figure 1 the first preferred embodiment of the Braille point display device of the present application is a split structure schematic diagram.
[0024] As shown in Figure 2 the first preferred embodiment of the Braille point display device of the present application is a schematic diagram of the driving component combined with the Braille contact.
[0025] As shown in Figure 3 the first preferred embodiment of the Braille point display device of the present application is a schematic diagram of the driving component.
[0026] As shown in Figure 4 the second preferred embodiment of the Braille point display device of the present application is a split structure schematic diagram.
[0027] As shown in Figure 5Fig. 2 is a schematic diagram of a driving assembly of a second preferred embodiment of the Braille display device according to the present application.
[0028] As shown in Fig. 1, a first preferred embodiment of the Braille display device according to the present application comprises a housing 1, two driving assemblies 2, six Braille contacts 3, and a control board 4. Figure 6 Fig. 2 is a schematic diagram of a driving assembly of a second preferred embodiment of the Braille display device according to the present application.
[0029] As shown in Fig. 1, a first preferred embodiment of the Braille display device according to the present application comprises a housing 1, two driving assemblies 2, six Braille contacts 3, and a control board 4. Figure 7 Fig. 3 is a flow chart of a control method of the Braille display device according to the present application. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0031] As shown in Fig. 1, a first preferred embodiment of the Braille display device according to the present application comprises a housing 1, two driving assemblies 2, six Braille contacts 3, and a control board 4. Figures 1 to 3 As shown in Fig. 1, a first preferred embodiment of the Braille display device according to the present application comprises a housing 1, two driving assemblies 2, six Braille contacts 3, and a control board 4. The housing 1 is provided with a top cover 10 on the top. The top cover 10 has six contact holes 101 arranged according to the positions of the Braille contacts. The Braille contacts 3 are slidably installed in the contact holes 101 and are limited by the top cover 10 so as not to be separated from the top cover. The driving assemblies 2 and the control board 4 are installed inside the housing 1. The two driving assemblies 2 are arranged in parallel at the bottom of the Braille contacts 3, and each driving assembly 2 corresponds to three Braille contacts 3. The control board 4 is electrically connected with the driving assemblies 2. The driving assemblies 2 are controlled to be extended and retracted by the control board 4. The driving assemblies 2 act on the six Braille contacts 3 during the extension and retraction process, change the state of the six Braille contacts 3 protruding from the top cover 10, and form different Braille. The Braille display device has a small overall volume, is convenient to carry, has a low cost, and has a simple driving structure.
[0032] Specifically, the control board 4 is provided with a controller, a driving module, and a communication module. The driving module is electrically connected with the driving assemblies 2. The controller receives instructions transmitted by the communication module and controls the extension and retraction state of the driving assemblies 2 through the driving module. Further, a battery is installed inside the housing 1. The battery is electrically connected with the control board 4 and supplies power to the control board 4 and the driving assemblies 2. The communication module can be a Bluetooth communication module, a 4G communication module, or a 5G communication module, etc. and can communicate with a smart terminal.
[0033] A power switch 11 and a reading button group 12 are mounted on the shell 1, and the power switch 11 and the reading button group 12 are electrically connected with the control board 4. The power-on state of the battery is controlled through the power switch 11 to realize the function of switching on and off. The reading button group 12 includes two buttons of previous and next, which are used to switch the display of Braille.
[0034] The drive assembly 2 includes a push rod driving module 21, a guide rail 22 and an electric push rod 23. The push rod driving module 21 is fixedly connected with the inner wall of the shell 1, the electric push rod 23 is in transmission connection with the push rod driving module 21, the guide rail 22 is fixedly connected with the push rod driving module 21, and the electric push rod 23 is telescopically arranged in the guide rail 22. The bottom of the Braille contact 3 has a follow-up wheel, and the Braille contact 3 is in butt joint with the top surface of the electric push rod 23 through the follow-up wheel at the bottom. The top surface of the electric push rod 23 has a plurality of recesses 231 and protrusions 232 arranged at intervals. When the follow-up wheel at the bottom of the Braille contact 3 is in butt joint with the recess 231, the top surface of the Braille contact 3 is flush with the plane of the top cover 10, and is in a flush state; when the follow-up wheel at the bottom of the Braille contact 3 is in butt joint with the protrusion 232, the top of the Braille contact 3 protrudes from the top cover 10, and is in a protruding state. The electric push rods 23 of the two drive assemblies 2 are respectively telescopic, drive six Braille contacts 3 to change the state of protruding from the top cover 10, and form different Braille. By arranging the guide rail 22, the telescopic direction of the electric push rod 23 can be limited to prevent deviation.
[0035] Further, the electric push rod 23 is provided with an encoder, the driving module receives and analyzes the instructions from the controller, and then converts the analyzed instructions into a format recognizable by the electric push rod 23. The two electric push rods are telescopic to corresponding lengths, drive the corresponding Braille contacts 3 to protrude, and form corresponding Braille.
[0036] The top surface of each electric push rod 23 is divided into 8 segments according to the protruding or flush state of the corresponding three Braille contacts 3. The electric push rod 23 only changes the state of a single Braille contact 3 by one segment length of telescopic, and the state of the Braille contact 3 is represented by binary, 1 for the Braille contact in the protruding state, and 0 for the Braille contact in the flush state. Then the segments of the electric push rod 23 are (000, 001, 011, 010, 110, 111, 101, 100) in turn, a total of 8 kinds of protruding combinations of Braille contacts 3. The combination of the two electric push rods 23 can realize 64 kinds of protruding combinations of Braille contacts, and realize all Braille expressions.
[0037] The segments of the two electric push rods 23 are arranged in the same way, and the three Braille contacts 3 are arranged from right to left as the highest bit, the second highest bit and the lowest bit. The arrangement is obtained by extracting the highest bit, the second highest bit and the lowest bit from the Gray code, and the three-bit Gray code is shown in the following table:
[0038] highest bit second highest bit lowest bit 0 0 0 0 0 1 0 1 1 0 1 0 1 1 0 1 1 1 1 0 1 1 0 0
[0039] The control module obtains the Braille code to be displayed, decomposes the code into two groups of 3-bit binary codes, converts the code into normal binary code, subtracts the normal binary code corresponding to the current position from the binary code, and assumes the result as D; if D is positive, the electric push rod retracts by D segments; if D is negative, the electric push rod extends by D segments.
[0040] For example, assuming that the code to be displayed is 0_1_0_1_1_1, the code is decomposed into two groups of 001 and 111, the current position in the eight kinds of convex combinations (000, 001, 011, 010, 110, 111, 101, 100) is determined, and the distance is assumed to be in the 010 position. One of the electric push rods needs to extend by 2 segments, and the other electric push rod needs to retract by 2 segments. That is, the electric push rod needs to extend when the code becomes smaller, and the electric push rod needs to retract when the code becomes larger.
[0041] As shown in Figures 4 to 6 The second preferred embodiment of the Braille point display device of the present application is different from the first preferred embodiment in that it comprises three drive assemblies 2A, the three drive assemblies 2A are arranged in parallel at the bottom of the Braille touch points 3, and each drive assembly 2A corresponds to two Braille touch points 3. The drive assemblies 2A are controlled to extend and retract by the control board 4, and the drive assemblies 2A act on the six Braille touch points 3 during the extension and retraction process, change the state of the convex top cover 10 of the six Braille touch points 3, and form different Braille.
[0042] The drive assembly 2A comprises a push rod driving module 21A, a guide rail 22A, and an electric push rod 23A, the push rod driving module 21A is fixedly connected with the inner wall of the shell 1A, the electric push rod 23A is in transmission connection with the push rod driving module 21A, the guide rail 22A is fixedly connected with the push rod driving module 21A, and the electric push rod 23A is arranged in the guide rail 22A in a retractable manner. The bottom of the Braille touch point 3 has a follower, and the Braille touch point 3 is in butt joint with the top surface of the electric push rod 23A through the follower at the bottom. The top surface of the electric push rod 23A has a plurality of recesses 231A and protrusions 232A arranged at intervals. When the follower at the bottom of the Braille touch point 3 is in butt joint with the recess 231A, the top of the Braille touch point 3 is not convex to the top cover 10, and is in a flush state; when the follower at the bottom of the Braille touch point 3 is in butt joint with the protrusion 232A, the top of the Braille touch point 3 is convex to the top cover 10, and is in a convex state. The electric push rods 23A of the two drive assemblies 2A extend and retract respectively, drive the six Braille touch points 3 to change the state of the convex top cover 10, and form different Braille.
[0043] Further, the electric push rod 23A is provided with an encoder, the driving module receives and analyzes the instruction from the controller, and then converts the analyzed instruction into a format recognizable by the electric push rod 23A, and the two electric push rods 23A are extended or retracted to the corresponding length, the corresponding braille contact 3 is protruded to form the corresponding braille.
[0044] The top surface of each electric push rod 23A is divided into four sections according to the protruding or flush state of the corresponding two braille contacts 3, and the electric push rod 23A changes the state of only one braille contact 3 by extending or retracting one section length, and the state of the braille contact 3 is represented in binary, 1 for the protruding state of the braille contact, and 2 for the flush state of the braille contact, so the sections of the electric push rod 23A are (00, 01, 11, 10) in turn, and there are four kinds of protruding combinations of the braille contact 3. The combination of the three electric push rods 23A can realize 64 kinds of protruding combinations of the braille contact, and all braille expressions are realized.
[0045] The sections of the three electric push rods 23A are arranged in the same way, and the two braille contacts 3 are high and low from right to left in turn, and the arrangement is obtained by extracting high and low from the Gray code. The two-bit Gray code is shown in the following table.
[0046] high bit low bit 0 0 0 1 1 1 1 0
[0047] After the control module obtains the braille code to be displayed, the code is decomposed into three groups of two-bit binary codes, the code is converted into ordinary binary code, the binary code is subtracted from the ordinary binary code corresponding to the current position, and the result is assumed to be D; if D is positive, the contraction motion is D sections; if D is negative, the extension motion is D sections.
[0048] For example, assuming that the code to be displayed is 01_10_11, it is decomposed into two groups of codes 01, 10 and 11, the position and distance in the four protruding combinations (00, 01, 11, 10) of the current position are judged, and assuming that the two groups of electric push rods are currently in the 11 position, one electric push rod needs to be extended by 1 position, one electric push rod needs to be retracted by 1 position, and the other electric push rod remains unchanged. That is, the electric push rod needs to be extended when the code decreases, and the electric push rod needs to be retracted when the code increases.
[0049] As shown in Figure 7 The application also discloses a control method of the braille display device, and the control method comprises the following steps:
[0050] (1) The communication module receives the braille binary code to be driven and displayed by each driving component, the protruding state of the braille contact is represented by 1, and the flush state of the braille contact is represented by 0, and the communication module transmits the braille code to the controller;
[0051] (2) The controller identifies the received Braille code, converts the Braille code from Gray code to normal binary code N, and subtracts the current displayed normal binary code S from the normal binary code to calculate the difference D between N and S, D=N-S;
[0052] (3) When D is positive, the controller controls the driving assembly to contract D segment lengths; when D is negative, the controller controls the driving assembly to extend D segment lengths; and the corresponding Braille is displayed.
[0053] (4) The controller updates the current position code S=D, and prepares to receive a new Braille code.
[0054] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A Braille dot display device, characterized in that, It comprises a shell, several drive assemblies, six Braille contacts and a control board; the top of the shell is provided with a top cover, and the top cover is provided with six contact holes arranged according to the positions of the Braille contacts; the Braille contacts are slidably arranged in the contact holes; The drive assemblies and the control board are arranged in the shell, and the drive assemblies are arranged in parallel at the bottom of the Braille contacts, and each drive assembly corresponds to the same number of Braille contacts; the control board is electrically connected with the drive assemblies, and the drive assemblies are controlled to be extended and retracted by the control board; during the extension and retraction of the drive assemblies, the six Braille contacts are acted on, so that the six Braille contacts change the state of protruding from the top cover.
2. The Braille dot rendering device of claim 1, wherein, The drive assembly comprises a push rod driving module, a guide rail and an electric push rod; the push rod driving module is fixedly connected with the inner wall of the shell; the electric push rod is in transmission connection with the push rod driving module; the guide rail is fixedly connected with the push rod driving module; and the electric push rod is arranged in the guide rail in a retractable manner; the bottom of the Braille contact is provided with a follower; the Braille contact is in butt joint with the top surface of the electric push rod through the follower at the bottom; the top surface of the electric push rod is provided with a plurality of recesses and protrusions arranged at intervals; when the follower is in butt joint with the recess, the top of the Braille contact does not protrude from the top cover, and is in a flush state; when the follower is in butt joint with the protrusion, the top of the Braille contact protrudes from the top cover, and is in a protruding state.
3. The Braille dot rendering device of claim 2, wherein, Two drive assemblies are arranged in parallel at the bottom of the Braille contacts, and each drive assembly corresponds to three Braille contacts.
4. The Braille dot rendering device of claim 3, wherein, The top surface of the electric push rod is divided into eight sections according to the protruding or flush state of the three Braille contacts corresponding to the top surface; and the electric push rod changes the state of only one Braille contact by one section length during extension and retraction.
5. The Braille dot rendering device of claim 2, wherein, Three drive assemblies are arranged in parallel at the bottom of the Braille contacts, and each drive assembly corresponds to two Braille contacts.
6. The Braille dot rendering device of claim 5, wherein, The top surface of the electric push rod is divided into four sections according to the protruding or flush state of the two Braille contacts corresponding to the top surface; and the electric push rod changes the state of only one Braille contact by one section length during extension and retraction.
7. The Braille dot rendering apparatus of claim 1, wherein, The control board is provided with a controller, a drive module and a communication module; the drive module is electrically connected with the drive assemblies; the controller receives instructions transmitted by the communication module and controls the extension and retraction state of the drive assemblies through the drive module.
8. The Braille dot rendering device of claim 7, wherein, A battery is arranged in the shell, and the battery is electrically connected with the control board.
9. The Braille dot rendering device of claim 7, wherein, A power switch and a reading button group are arranged on the shell, and the power switch and the reading button group are electrically connected with the control board.
10. A control method of a Braille point display device, characterized by, The Braille display device of claim 4 or claim 6 comprises the following steps: (1) the communication module receives the Braille binary code required to be driven and displayed by each drive assembly; the protruding state of the Braille contact is represented by 1, and the flush state of the Braille contact is represented by 0; the communication module transmits the Braille code to the controller; (2) The controller identifies the received Braille code, converts the Braille code from the Gray code to the normal binary code N, and subtracts the current displayed normal binary code S from the normal binary code to calculate the difference D between N and S, D=N-S; (3) When D is positive, the controller controls the driving assembly to contract D segment lengths; when D is negative, the controller controls the driving assembly to extend D segment lengths; and the corresponding Braille is displayed; (4) The controller updates the current position code S=D, and prepares to receive a new Braille code.