A low energy consumption electromagnetic drive type braille display device

Abstract

Disclosed is an electromagnetically-driven Braille display device with low energy consumption, comprising a base, a main body, actuation rods, ejector pins and actuators, wherein the main body is mounted on the base, the main body is at least provided with ejector pin mounting holes with the same number as that of Braille contacts in a "cell", the actuation rods with the same number as that of each column of ejector pins are arranged below the column of ejector pins, and the bottom of each ejector pin is always in contact with the actuation rod; and the main body is further provided with actuation rod mounting holes, each actuation rod mounting hole is respectively in communication with the corresponding ejector pin mounting hole, each actuation rod is driven by an actuator, and each actuation rod uniquely controls the lifting movement of an ejector pin corresponding to the actuation rod. The present invention provides an electromagnetic-driven Braille display device with low energy consumption, wherein same is suitable for the generation of Braille characters in all languages and in all forms.

Description

technical field [0001] The invention relates to the technical fields of mechanical engineering and electronic engineering, in particular to an electromagnetically driven braille display device with low energy consumption. Background technique [0002] According to the statistics of the World Health Organization (WHO) in 2010, there are about 39 million blind people in the world, and most of them live in low-income and middle-income countries. By 2020, the number of blind people in China will increase significantly. Therefore, for such a large and important group of blind people, the society needs to give them care and support, and they also urgently need a good learning environment and cultural education. [0003] Blind people cannot learn and read like ordinary people. Their reading methods include auditory reading and touch reading. Tactile reading relying on fingers has fast reading speed and good information discrimination. It is a must-teach course in schools for the b...

AI Technical Summary

Problems solved by technology

Since then, companies in Japan and Germany have developed braille display devices of 20 square meters and 40 square meters using piezoelectric ceramic sheets, and continuously optimized the structure to make the performance of piezoelectric ceramic sheets more stable. Low power consumption, fast refresh speed, light weight, and can provide a large supporting force, but there are also shortcomings: the production and processing process is cumbersome, and the manufacturing cost of parts is high, which limits the popularity of piezoelectric ceramic braille displays

At the beginning of the 20th century, Fung-Huei Yeh and others from the Department of Mechanical and Mechatronic Engineering of Tamkang University in Taiwan, China developed an electromagnetic Braille display device, because the electromagnetic Braille contact drive mechanism has a fast refresh rate and high reliability. High, favorable price, easy to manufacture and maintain, and can provide a large supporting force, etc. Since then, it has been continuously researched in some countries such as South Korea and China, but the whole device has a large current demand and high power consumption, so it needs to be installed with a cooling device , larger volume

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