Braille- A ray of hope for the blind people, invented 200 years ago and still helping people with visual impairment so that they can read and write.
Braille is up for upgrade since a long time and now finally it has got one. Germany’s Bayreuth University recently developed a special speaker system that emits ultrasound waves with the purpose of letting people read braille in midair, which means that now blind people can access things available for people without disabilities, thanks to the grid of ultrasonic speakers that emits ultrasound in the air that are similar to the dots written in Braille.
The presented system functions in 2 modes of operation that are obstacle recognition mode and fixed path mode.
Obstacle detection mode uses grouping of ultrasonic transceivers for solid obstacle detection and water sensor to identify liquid obstacles by employing a micro controller.
On the skin this feels like a gentle breeze of air, says Viktorija Paneva at the University of Bayreuth in Germany. The mid-air dots are perceptible on a persons palm when they hold their hand up.
Getting through it. TechX 