Optimal Design of Braille Display Based on Adaptive-Network-based Fuzzy Inference

Although electromagnetic braille displays have fast response, reliable performance, and low price, they also have high power consumption and are susceptible to heat generation. For the development of a braille display, in this paper, we propose a solution based on an adaptive network-based fuzzy inference system(ANFIS). First, we analyze and optimize the driving voltage of the electromagnetic driver, the resistance value of the electromagnetic coil, the fingertip touch support force, and the operation temperature of the device, and we describe the development of a prototype of an electromagnetic braille display with a hierarchical structure. We verified experimentally that the device developed in this study can provide a fingertip touch support force of more than 150 mN, with a contact response frequency of 35.8Hz, while maintaining a temperature of 32. C, which is suitable for fingertip contact after a long operational period. In addition, the correct display rate of the braille characters can reach 100%. All of these specifications meet the design requirements and can provide users with an optimal braille reading.