Braille Display with Electroactive Polymer Actuators

带有电活性聚合物致动器的盲文显示器

• 批准号: 6963278
• 负责人: QIMING ZHANG
• 金额: $ 21.75万
• 依托单位: PENNSYLVANIA STATE UNIVERSITY, THE
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6963278
• 关键词: assistive device /technology; blind aid; electrical potential; electrical property; polymers; technology /technique development

DESCRIPTION (provided by applicant): The objective of this EBRG program is to develop novel actuator technology for refreshable full-page Braille display and graphic display. Despite many years of R&D efforts to reduce the cost of the refreshable Braille display and to develop new technologies which can be used to produce practical full page Braille play and graphite Braille display, the Piezo Braille displays are still the dominating form for the refreshable Braille display. The bulky size, high cost, and fragility of the piezo-actuators make it impractical to use them for refreshable full-page Braille displays. In recent years, we have developed several novel electroactive polymers which generate strain two order of magnitude and elastic energy density one order of magnitude higher than these in the piezoceramics used in the commercial refreshable Braille displays. In this EBRG program, we will make use of this class of polymers to develop low cost, robust, compact actuators (order of magnitude reduction in size while maintaining same actuation capability) to replace the piezoceramic bimorphes, which will make the full-page Braille display and graphic display possible and practical. This EBRG program will combine the expertise at Penn State in the electroactive polymers and in actuator development with the expertise at View Plus on the Braille display. This combined expertise provides unique opportunity to develop these compact actuators to be directly transitioned to practical refreshable graphite Braille display and full page Braille display.

描述（由申请人提供）：EBRG计划的目标是开发新的致动器技术，用于可刷新的全页盲文显示和图形显示。尽管多年来的研发努力，以降低成本的可刷新盲文显示器和开发新的技术，可以用来生产实用的全页盲文游戏和石墨盲文显示器，压电盲文显示器仍然是主要形式的可刷新盲文显示器。压电致动器的体积大、成本高和易碎使得将它们用于可刷新的全页盲文显示器是不切实际的。 近年来，我们已经开发了几种新型的电活性聚合物，其产生的应变两个数量级和弹性能量密度一个数量级高于商业可刷新盲文显示器中使用的压电陶瓷。在EBRG计划中，我们将利用这类聚合物开发低成本，坚固，紧凑的致动器（在保持相同的致动能力的同时，尺寸减少了一个数量级），以取代压电陶瓷双晶片，这将使全页盲文显示和图形显示成为可能和实用。 EBRG的这一项目将联合收割机与宾夕法尼亚州立大学在电活性聚合物和致动器开发方面的专业知识相结合，并与View Plus在盲文显示方面的专业知识相结合。这种结合的专业知识提供了独特的机会，开发这些紧凑的致动器，直接过渡到实用的可刷新石墨盲文显示和全页盲文显示。