Electromagnetic push-pull Braille touch screen

Abstract

The invention discloses an electromagnetic push-pull Braille touch screen which comprises contacts with the number being the multiple of 6. Each six contacts are arranged in three rows and two lines so as to form a Braille unit; all the Braille units are assembled to compose the Braille touch screen; each contact comprises a base frame, a return spring, a coil, a permanent magnet, an iron core and a coil lead; one end of the return spring is connected to the bottom of the permanent magnet, and the other end of the return spring is fixed on the base frame; the coil and the iron core compose an electromagnet which is fixed at the bottom of the base frame; the coil lead is connected with an external control circuit for supplying power for the coil; and the top of the permanent magnet is hemispherical. The touch screen utilizes the electricity-to-magnetism principle, the Ampere's rule and the phenomenon that magnets with the same poles reprehend each other, and realizes the rising and reset of the contact through the thrust and pull generated by the permanent magnet and the electromagnet. The touch screen is in line with the formation rule of Braille and the using habits of blind persons, is simple in structure principle and easy to realize, and can realize the fast generating and updating of the Braille through being externally controlled by a common chip.

Description

technical field [0001] The invention relates to a braille touch screen, in particular to an electromagnetic push-pull type braille touch screen. Background technique [0002] For the blind or visually impaired, one of the biggest problems in life is reading. They cannot read books, read newspapers, surf the Internet, etc. like normal people. The means for them to obtain information are relatively simple, only sound and Braille. They can only obtain external information by listening to sound or reading Braille books specially designed for them. [0003] Nowadays, a large amount of information is disseminated through electronic platforms. This method is very inconvenient for the blind or visually impaired, because it is impossible for them to obtain information by reading the graphic information on the display screen. , for those who have less means of obtaining information, life is even more inconvenient. [0004] Braille is one of the most common tools for blind people to ...

AI Technical Summary

Problems solved by technology

The means for them to obtain information are relatively simple, only sound and Braille. They can only obtain information from the outside world by listening to sound or reading Braille books specially designed for them.

[0003] Nowadays, a large amount of information is disseminated through electronic platforms. This method is very inconvenient for the blind or visually impaired, because it is impossible for them to obtain information by reading the graphic information on the display screen. , life is even more inconvenient for those who have less access to information

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