Proceedings ArticleDOI
Braille refreshable display using lead screw actuation
Syed Adnan Akhtar,Dinkar Prasad +1 more
- pp 5-8
TLDR
In this paper, a low cost method of actuation which is called lead-screw actuation for braille refreshable display is presented, which requires very low voltage and its operation is independent of temperature.Abstract:
The paper presents a low cost method of actuation which is called lead-screw actuation for braille refreshable display. An array of six small sized independent motors are arranged in an array of 3×2 matrix. The shaft is coupled with a lead screw. Another internally threaded hexagonal nut is fitted on the lead screw which is constrained to move only in axial direction which actuates the pins. The device requires very low voltage and its operation is independent of temperature. The actuation of the pins can be achieved within 0.08 seconds as compared to 50 seconds in electrothermal braille refreshable display and 0.5 seconds in ionic polymer metal composite (IPMC) actuators. Moreover, no continuous power supply is required to retain the pins in the position once they have been actuated.read more
Citations
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Proceedings ArticleDOI
A Portable Braille Refreshable Display Using Micro Servos
A M Muntasir Rahman,Shaker Mahmud Khandaker,Nasif Noor Saleheen,Tasnia Nobi Afee,Naba Afrin,Md. Ashraful Alam +5 more
TL;DR: A single cell refreshable braille display model has been proposed that is based on micro servos, as opposed to solenoids, lead screw actuation etc., to formulate different patterns of braille symbols, each representing an alphanumerical value or a contracted word.
Proceedings ArticleDOI
An approach towards the development of refreshable Braille Computer Display Unit
TL;DR: A novel proposal about working and development of an electronic refreshable braille display unit to build a getaway to the digital world for the blind people.
References
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TL;DR: In this paper, the authors present a survey of physics and physics applications of Newton's laws of Motion in Two-dimensional (2D) space, including linear momentum, angular momentum, and torque.