WO2016197928A1 - 一种盲文点显器 - Google Patents

一种盲文点显器 Download PDF

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Publication number
WO2016197928A1
WO2016197928A1 PCT/CN2016/085177 CN2016085177W WO2016197928A1 WO 2016197928 A1 WO2016197928 A1 WO 2016197928A1 CN 2016085177 W CN2016085177 W CN 2016085177W WO 2016197928 A1 WO2016197928 A1 WO 2016197928A1
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WIPO (PCT)
Prior art keywords
connecting member
conductive connecting
braille
braille display
conductive
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PCT/CN2016/085177
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English (en)
French (fr)
Inventor
陈新
陈后金
韩萌
游启麟
王天齐
杨阳
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中国盲文出版社
北京交通大学
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Application filed by 中国盲文出版社, 北京交通大学 filed Critical 中国盲文出版社
Priority to US15/735,192 priority Critical patent/US10733907B2/en
Publication of WO2016197928A1 publication Critical patent/WO2016197928A1/zh

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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements

Definitions

  • the invention belongs to the technical field of blind reading devices, and in particular relates to a Braille display device.
  • Braille also known as Braille or Braille
  • Braille books are created by braille, braille or braille printers that produce different combinations of Braille characters on paper.
  • Braille display also known as blind display, or blind electronic display or typewriter, refers to the ability to display the information on the computer in Braille, easy for blind people to read, through the use of the screen software, can read the software
  • the text is displayed in Braille to the display.
  • the Braille button on the display will automatically bulge, and the blind will feel the text through the touch.
  • the Braille display devices in the domestic and foreign markets are mainly piezoelectric materials.
  • the volume is large and the price is high.
  • the Braille display device developed and produced by Tsinghua University is composed of 40 automatic braille units, which can automatically display the text information on the computer through the screen reading software into Braille. The blind person can touch the Braille word on the Braille unit by hand. To get the information displayed on the computer screen.
  • the volume is too large; in addition, the new concave-convex lattice sensor cooperating with Japan is made of the extremely deformed electro-sensitive material.
  • the drive voltage is high and the drive circuit is complicated, so the drive circuit is bulky, the whole product is not easy to carry, and the price is high.
  • the cost is high and cannot meet the conditions of use of ordinary blind families. At present, it is mostly purchased by blind educational institutions.
  • the present invention proposes a Braille display device, wherein the concave and convex dot matrix of the Braille display device is composed of a plurality of dot positions.
  • Each point includes: an upper telescopic member, a lower telescopic member, an upper conductive connector, an intermediate conductive connector, a lower conductive connector, an external sleeve lock, and a guide bar; wherein the guide bar is divided into two upper and lower, two guides
  • the rod is coaxially arranged vertically, and the two guiding rods are fixed by the intermediate conductive connecting member, and the top end of the intermediate conductive connecting member is connected to the upper conductive connecting member through the upper telescopic member, and the bottom end of the intermediate conductive connecting member passes through the lower telescopic member and the lower portion
  • the conductive connecting members are connected; the external sleeve lock is placed at the joint of each of the telescopic members and the respective conductive connecting members, and is used
  • the upper telescopic member or the lower telescopic member is made of a memory alloy material, and is energized to control its contraction, and the deformation state can be maintained after the power is turned off.
  • the upper conductive connecting member or the lower conductive connecting member is an integral transparent hollow structure with an upper end cylindrical connecting lower end thread; the lower conductive connecting member is an upper transparent connecting structure with an upper end threaded connection and a lower end cylindrical shape.
  • the intermediate conductive connecting member is a structure in which the upper and lower ends are screwed to the middle column shape, the middle column portion is provided with a wiring hole, and the threaded portions at both ends are an intermediate hollow structure.
  • the Braille display device further includes: an outer frame and a signal board; the outer frame is symmetric about the upper and lower surfaces and has a plurality of holes of a certain size, and the position and the number of the holes are matched with the concave and convex lattice of the Braille display; the concave and convex lattice The whole is embedded in the outer frame, so that the columnar portions of the upper conductive connecting member and the lower conductive connecting member are fixed in the symmetrical holes of the upper and lower surfaces of the outer frame, and the guiding rod embedded in the upper conductive connecting member just passes through the corresponding opening of the outer frame surface Holes; signal boards are respectively mounted on the upper and lower surfaces of the outer frame.
  • the invention has the beneficial effects that the convexity and the concave of the Braille lattice can be realized by the concept of the memory alloy material, and the product cost can be greatly saved; and the structure can make the Braille display device tend to be smaller and thinner, and is convenient to carry; Since the memory alloy material is used, it is automatically maintained after the driving deformation is generated. In the case where there is no driving state change, only the chip on the circuit consumes power, and there is no continuous current required to maintain the blind spot, so the work is performed. Low consumption, which improves endurance.
  • 1a-1b are schematic structural diagrams of a single point of a Braille display device provided by the present invention.
  • FIGS. 2a-2b are schematic diagrams showing the installation of a single point and an auxiliary fixture for a Braille display device according to the present invention
  • FIG. 3 is a schematic diagram showing the working principle of a Braille display device provided by the present invention.
  • 1-upper telescopic member 2-lower telescopic member, 3-upper conductive connector, 4-intermediate conductive connector, 5-lower conductive connector, 6-external sleeve lock, 7-conductive rod, 8-outer Frame, 9-signal board, 10-point position.
  • the Braille display device constitutes one Braille dot matrix through a plurality of single points, and the Braille dot display device of different specifications is formed by any square Braille dot matrix as needed.
  • a single point 10 mainly includes 7 parts: an upper telescopic element 1 , a lower telescopic element 2 , an upper conductive connection piece 3 , an intermediate conductive connection piece 4 , a lower conductive connection piece 5 , an external sleeve lock 6 , Guide rod 7.
  • the upper telescopic member 1 and the lower telescopic member 2 are a certain length of memory alloy material;
  • the upper conductive connecting member 3 and the lower conductive connecting member 5 are both integral transparent hollow structures with upper end cylindrical connecting lower end threads;
  • the intermediate conductive connecting member 4 is The upper and lower ends are screwed to the middle columnar structure, the middle of the threaded portion is hollow, and the middle columnar portion has a wiring hole;
  • the outer sleeve lock 6 is symmetrical with respect to the upper and lower surfaces and has a plurality of holes of a certain size;
  • the guide rod 7 is specific The material is made into a thin rod-like structure of a specific length.
  • the upper conductive connector 3 is placed at the top end, the lower end of the upper telescopic member 1 is connected, and the other end of the intermediate connector 4 is connected to the other end of the telescopic member 1;
  • the connecting member 5 is placed at the bottom end, one end of the lower telescopic member 2 is connected to the upper end, and the other end of the intermediate connecting member 4 is connected to the other end of the lower telescopic member 2;
  • the outer sleeve lock 6 is placed on each of the telescopic members and the conductive connecting members.
  • the telescopic member and the conductive connecting members are fixed to achieve a tight connection; the one end of the guiding rod 7 passes through the upper and lower conductive connecting members 3 and 5, and the other end is inserted into the intermediate conductive connecting member 4, and passes through the upper and lower telescopic members. 1 and 2, to achieve a through connection of the entire Braille point.
  • Each of the Braille lattices includes: a plurality of single points 10, a frame 8, and a signal board 9, as shown in Figures 2a-2b.
  • the outer frame 8 is a design structure in which a plurality of holes of a certain size are symmetrically formed on the upper and lower surfaces; a single point 10 is integrally embedded in the outer frame, so that the columnar portions of the upper and lower conductive connecting members 3 and 5 are fixed in the symmetric holes of the upper and lower surfaces of the outer frame 8.
  • the guide rods 7 embedded in the upper conductive connecting member 3 just pass through the corresponding openings in the surface of the outer frame 8; the signal boards 9 are respectively mounted on the upper and lower surfaces of the outer frame 8.
  • the upper telescopic member 1 of the single point 10 is driven by current, and the upper and lower conductive connecting members 3 and 5 of the single point 10 are fixed by the columnar portion.
  • the upper telescopic member 1 is contracted, and the lower telescopic member 2 is stretched, so that the guiding rod 7 embedded at the upper end protrudes from the opening of the upper surface of the outer frame 8 by a certain distance to realize the convexity of the Braille point;
  • the current drives the lower telescopic member 2 of the single point 10 to contract the lower telescopic member 2, and the upper telescopic member 1 is stretched, so that the guide rod 7 embedded at the upper end is returned to the opening of the upper surface of the outer frame 8, thereby realizing the Braille point.
  • Embodiments of the present invention use a memory alloy designed as a spring, which may be a single pass memory alloy. Designed into a spring shape to ensure the life of the material first, after material testing: 5 million internal memory deformation is about 2%; secondly, in the cooling state, the simultaneous action of two steady-state springs can keep the point of the protrusion Without a drop in artificial pressure, the full phase transition temperature is 45 degrees.

Abstract

一种盲文点显器，属于盲人阅读设备技术领域，其采用记忆合金材料设计实现盲文点显器盲文点阵的凹凸变化。盲文点显器主要由任意方数的盲文凹凸点阵构成，每一方盲文凹凸点阵均包括：若干单个点位(10)、外框(8)、信号板(9)；每单个点位(10)均包括：上、下伸缩件(1,2)、上导电连接件(3)、中间导电连接件(4)、下导电连接件(5)、外置套锁(6)、导向杆(7)。通过各特定部件的特定连接实现盲文点的凹凸变化。通过采用该盲文点显器，提高了续航能力、降低了成本，而且其体积较小，可以应用于移动便携设备或穿戴设备。

Description

一种盲文点显器 技术领域
本发明属于盲人阅读设备技术领域，尤其涉及一种盲文点显器。
背景技术
盲人无法像正常人用眼睛观看事物，主要依靠耳朵的听觉及手指的触觉获取外界的信息。为了便于盲人进行文化学习及信息交流，经常会将一些中文、英文、法文或者其它国家语言的文献资料转化为盲文书籍供盲人阅读，其中盲文也称为点字或者凸字，是专为盲人设计、主要依靠触觉感知的文字。通常每个盲文点字包括6个点位，该6个点位平均分为并排排列的两组。而盲文书籍是通过点字板、点字机或点字打印机在纸张上制作出不同组合的盲文点字形成的。
随着信息化的发展及个人计算机的普及，现在已经具有可以安装在计算机上的汉字盲文转换软件，该软件可以将计算机内的汉字转换为盲文编码，但个人计算机一般是通过屏幕显示图像或者文字，但盲人无法看到计算机屏幕上显示的盲文。盲文点字显示器，简称点显器，又名盲人电子显示器或点字机，指能够将计算机上的信息用盲文同步显示，便于盲人摸读，通过与读屏软件配合使用，能将读屏软件读出的文字通过盲文显示到点显器上。点显器上的盲文按点会自动地凸起，盲人通过触觉来感受文字。
目前，国内外市场上盲文点显器都是以压电材料为主，通过控制压电陶瓷体积的变化来激发盲文点凹凸的变换，故体积庞大，价格高昂。另外国外还有实验室在研究超声波阵列和电活性聚合物(EPA)材料设计的，但 是，价格高昂难以商业化，尚未公开展示。其中，清华大学研发生产的盲文点显器由40方自动盲文单元组成，可以将电脑上的文字信息通过读屏软件翻译成盲文后自动显示出来，盲人可以用手触摸盲文单元上变化的盲文点字来获取电脑屏幕上显示的信息。但是，由于其是通过压电陶瓷体积的变化控制来实现盲文点凹凸的变换，故使其体积过大；另外，其和日本合作的新型凹凸点阵传感器由极大形变电致材料制作而成，驱动电压高，驱动电路复杂，所以驱动电路体积大，整个产品较为不便于携带，而且价格高昂。另一方面，成本较高，不能满足普通盲人家庭的使用条件，目前多为盲人教育机构采购。
发明内容
针对现有盲文点显器存在的结构复杂、体积较大、成本较高的问题，本发明提出了一种盲文点显器，所述盲文点显器的凹凸点阵由多个点位排列组成，每个点位包括：上伸缩件、下伸缩件、上导电连接件、中间导电连接件、下导电连接件、外置套锁、导向杆；其中导向杆分为上下两根，两根导向杆同轴竖直布置，两根导向杆之间通过中间导电连接件固定，中间导电连接件的顶端通过上伸缩件与上导电连接件相连，中间导电连接件的底端通过下伸缩件与下导电连接件相连；外置套锁置于各个伸缩件与各个导电连接件相连接处，用于固定各个伸缩件与各导电连接件；上导电连接件和下导电连接件之间的安装距离固定，通过控制上伸缩件或下伸缩件变形，使得中间导电连接件带动导向杆相对于上导电连接件或下导电连接件凸出或凹进，实现盲文点显功能。
所述上伸缩件或下伸缩件采用记忆合金材料，对其进行通电可控制其收缩，断电之后又可以保持形变状态。
所述上导电连接件或下导电连接件为上端柱状连接下端螺纹的整体通透空心结构；下导电连接件为上端螺纹连接下端柱状的整体通透空心结构。
所述中间导电连接件为上下两端螺纹连接中间柱状的结构，中间柱状部分开有接线孔，两端螺纹部分为中间空心结构。
所述盲文点显器还包括：外框、信号板；外框为上下表面对称且开有若干大小一定的孔，孔的位置和数量与盲文点显器的凹凸点阵所匹配；凹凸点阵整体嵌入到外框中，使上导电连接件和下导电连接件的柱状部分固定在外框的上下表面对称的孔中，嵌入在上导电连接件中的导向杆恰好穿过外框表面的相应开孔；信号板分别安装于外框的上下表面。
本发明的有益效果在于：利用记忆合金材料的构思实现盲文点阵的凸起与凹陷，可以大大节省产品成本；并且该结构可使盲文点显器趋于更小更薄，方便携带；另外，由于采用的是记忆合金材料，所以在驱动形变产生后，是自动保持的，在没有驱动状态变化的情况下，只有电路上的芯片消耗功率，而不存在保持盲点所需的持续电流，所以功耗低，从而提高续航能力。
附图说明
图1a～1b为本发明提供的盲文点显器的单个点位的结构示意图；
图2a～2b为本发明提供盲文点显器的单个点位与附属固定件安装示意图；
图3为本发明提供的盲文点显器的工作原理示意图；
其中，1-上伸缩件、2-下伸缩件、3-上导电连接件、4-中间导电连接件、5-下导电连接件、6-外置套锁、7-导电杆、8-外框、9-信号板、10-点位。
具体实施方式
下面结合附图，对优选实施例进行详细说明。
本发明实施例中，盲文点显器通过多个单个点位构成一方盲文点阵，根据需要由任意方数盲文点阵构成不同规格的盲文点显器。
参见图1a～1b，单个点位10主要包括7个部分：上伸缩件1、下伸缩件2、上导电连接件3、中间导电连接件4、下导电连接件5、外置套锁6、导向杆7。其中，上伸缩件1与下伸缩件2为一定长度的记忆合金材料；上导电连接件3与下导电连接件5均为上端柱状连接下端螺纹的整体通透空心结构；中间导电连接件4为上下两端螺纹连接中间柱状的结构，螺纹部分中间是空心的，中间柱状部分留有接线孔；外置套锁6为上下表面对称并开有若干大小一定孔的结构；导向杆7为采用特定材料制成特定长度的细棒状结构。
单个盲文点位10的各部分装配参见图1a和1b，上导电连接件3置于顶端，下连接上伸缩件1的一端，中间连接件4的一端连接上伸缩件1的另一端；下导电连接件5置于底端，上连接下伸缩件2的一端，中间连接件4的另一端连接下伸缩件2的另一端；外置套锁6套置于各伸缩件与各导电连接件相接处的地方，固定伸缩件与各导电连接件，实现二者紧密连接；导向杆7一端穿过贯通的上下导电连接件3与5，另一端插入中间导电连接件4，穿过上下伸缩件1与2，实现整个盲文点位的贯通连接。
每一方盲文点阵均包括：若干个单个点位10、外框8、信号板9，可参见图2a～2b。外框8为上下表面对称开有若干大小一定孔的设计结构；单个点位10整体嵌入到外框中，使上下导电连接件3与5的柱状部分固定在外框8的上下表面对称的孔中，嵌入在上导电连接件3中的导向杆7恰好穿过外框8表面的相应开孔；信号板9分别安装于外框8上下表面。
整个新型盲文点显器的盲文点阵的实现方案，参见图3所示，通过电流驱动单个点位10的上伸缩件1，由于单个点位10的上下导电连接件3与5的柱状部分固定在外框8的相应开孔中，上伸缩件1收缩，下伸缩件2被拉伸，使上端嵌入的导向杆7伸出外框8上表面的开孔一定距离，实现盲文点的凸起；通过电流驱动单个点位10的下伸缩件2使下伸缩件2收缩，上伸缩件1被拉伸，使上端嵌入的导向杆7回到外框8上表面的开孔内，以此实现盲文点的凹陷。
本发明实施例使用了设计成弹簧的记忆合金，可以为单程记忆合金。设计成弹簧形状首先保证了材料的寿命，经过材料试验得：5百万次内记忆形变约为2％；其次在cooling状态下，两个稳态弹簧的同时作用，能使突起的点保持住，而不会因人为的压迫而产生下降，其完全的相变温度为45度。
通过这样的设计，实现上下两个方向的稳定运动，也能使各个点的运动相互独立而不受影响。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (5)

  1. 一种盲文点显器，其特征在于，所述盲文点显器的凹凸点阵由若干个点位排列组成，每个点位包括：上伸缩件、下伸缩件、上导电连接件、中间导电连接件、下导电连接件、外置套锁、导向杆；其中导向杆分为上下两根，两根导向杆同轴竖直布置，两根导向杆之间通过中间导电连接件固定，中间导电连接件的顶端通过上伸缩件与上导电连接件相连，中间导电连接件的底端通过下伸缩件与下导电连接件相连；外置套锁置于各个伸缩件与各个导电连接件相连接处，用于固定各个伸缩件与各导电连接件；上导电连接件和下导电连接件之间的安装距离固定，通过控制上伸缩件或下伸缩件变形，使得中间导电连接件带动导向杆相对于上导电连接件或下导电连接件凸出或凹进，实现盲文点显功能。
  2. 根据权利要求1所述盲文点显器，其特征在于，所述上伸缩件或下伸缩件采用记忆合金材料，对其进行通电可控制其收缩，断电之后又可以保持形变状态。
  3. 根据权利要求1所述盲文点显器，其特征在于，所述上导电连接件或下导电连接件为上端柱状连接下端螺纹的整体通透空心结构；下导电连接件为上端螺纹连接下端柱状的整体通透空心结构。
  4. 根据权利要求1所述盲文点显器，其特征在于，所述中间导电连接件为上下两端螺纹连接中间柱状的结构，中间柱状部分开有接线孔，两端螺纹部分为中间空心结构。
  5. 根据权利要求1或2或3或4所述盲文点显器，其特征在于，所述盲文点显器还包括：外框、信号板；外框为上下表面对称且开有若干大小 一定的孔，孔的位置和数量与盲文点显器的凹凸点阵所匹配；凹凸点阵整体嵌入到外框中，使上导电连接件和下导电连接件的柱状部分固定在外框的上下表面对称的孔中，嵌入在上导电连接件中的导向杆恰好穿过外框表面的相应开孔；信号板分别安装于外框的上下表面。
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