In this work, we present the design and experimental analysis of a novel mechanism for a refreshable braille display (RBD). It implements a single actuated slider for refreshing braille cells composed of simple and passive ferromagnetic pins. The approach potentially decouples the cost of the final device from the number of braille cells and pins. In this work, we present the rationale of the actuating method and a design solution implemented in a working prototype of the mechanism. Experimental characterization supported by FEM analysis provided a clearer view of the interacting forces and dynamics of the tactile pins refreshing cycle, and allowed to improve calibration and performance with respect to previous preliminary results. Such knowledge can be transferred to full-size refreshable braille display prototypes. A final cost and scalability analysis, and comparison with conventional RBDs devices highlights limits and potentials of the proposed method, in particular for implementation of large RBDs and tactile matrices.

中文翻译：

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一种用于盲文光标的被动和可扩展磁性机制，一种创新的可刷新盲文显示器

在这项工作中，我们介绍了可刷新盲文显示器 (RBD) 的新型机制的设计和实验分析。它实现了一个单驱动滑块，用于刷新由简单和无源铁磁针组成的盲文单元。该方法潜在地将最终设备的成本与盲文单元和引脚的数量分离。在这项工作中，我们介绍了驱动方法的基本原理和在该机构的工作原型中实施的设计解决方案。有限元分析支持的实验表征提供了触觉销刷新周期的相互作用力和动力学的更清晰视图，并允许相对于先前的初步结果改进校准和性能。这些知识可以转移到全尺寸可刷新盲文显示器原型中。