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A Compliant Mechanism Design for Refreshable Braille Display Using Shape Memory Alloy

[+] Author Affiliations
Pulkit Sapra, Ankit Kumar Parsurampuria, Dhruv Gupta, Suman Muralikrishnan, Mayank Raj, Akash Anand, Vinit Darda, Rohan Paul, M. Balakrishnan, P. V. M. Rao

Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India

Paper No. DETC2015-47468, pp. V009T07A054; 10 pages
  • ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 9: 2015 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications
  • Boston, Massachusetts, USA, August 2–5, 2015
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5719-9
  • Copyright © 2015 by ASME


Refreshable Braille Display (RBD) is a device that enables people with visual imparity to read digital text through tactile interface. Braille literacy is essential for empowerment of visually impaired people and offers several advantages over auditory aids. Commercially available RBDs have not been able to penetrate the market due to their high cost. Shape memory alloy (SMA) based Braille display is a low cost alternative but faces the challenge of high power consumption, heat accumulation and low refresh rate. This paper discusses the design, analysis and experimental validation of a cantilever based compliant mechanism for SMA based RBD to solve these issues.

Copyright © 2015 by ASME



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