EASY-BRAILLE - Electrothermal Actuator System for bistable hybrid Braille area displays

计算机的智能化使人们能够随时访问大量数据并使用这些数据。然而，全球近2.85亿人由于视力受损而无法从这一发展中受益，其中3900万人完全失明，2.46亿人视力严重受限。更复杂的数据，如图形或表格，到目前为止还不能完全复制。因此，需要大面积的触觉系统，能够将图形转换为盲文代码的网格，并且具有平坦、紧凑的结构，并且需要低电力来操作。本项目的目的是研究用于盲文区域显示的全新设计。盲文显示驱动器以数字模式工作。集成到大的盲文显示区域中的是水平活动的平面内致动器，对于要被提升的机器人，平面内致动器在编程阶段期间插入平面内致动器作为盲文销和提升致动器之间的间隔件。编程在面外致动器处于降低位置时完成。在编程之后，面外致动器变得不活动，使得回缩弹簧提升销。在上致动器配置中，平面内致动器被放置在两层中。在第二（下部）致动器层中，布置有柔性安装的柱塞线圈致动器，其允许升降销的竖直移动。由于技术原因，柱塞线圈致动器的装配受到限制，因此计划一个柱塞线圈致动器同时提升和降低多个提升销（例如16个销）。在这个项目中，两个不同的合作与不同的空间分辨率致动器系统的潜力和限制将进行调查。

The miniaturisation of the computer has made it possible for people to gain access to a very large amount of data at any time, and to use these data. However, almost 285 million people worldwide are largely unable to benefit from this development due to impairment of their vision, with 39 million being fully blind while 246 million have severely restricted vision. More complex data, such as graphics or tables, so far cannot be fully reproduced. Thus there is a need for large-area tactile systems which are able to translate graphics into the grid of the Braille code, and which have a flat, compact construction and require low electric power to operate.The aim of this project is to research a completely new design for a Braille area display. The Braille display drives work in a bistable mode. Integrated into a large Braille display area are horizontally active in-plane actuators, which, for the taxel to be lifted, insert an in-plane actuator as a spacer between the Braille pin and a lifting actuator during a programming phase. The programming is done while the out-of-plane actuator is in a lowered position. After the programming, the out-of-plane actuator becomes inactive, so that the retracting spring lifts the pins. In an upper actuator configuration electrothermal in-plane actuators are placed in two layers. In a second (lower) actuator layer flexibly mounted plunger coil actuators are arranged which allow a vertical movement of the lifting pins. Because the miniaturisation of plunger coil actuators is limited for technical reasons, it is planned for one plunger coil actuator to lift and lower several lifting pins (e.g. 16 pins) simultaneously. In this project the potentials and limits of two different cooperating actuator systems with diverse spatial resolution will be investigated.