Ultrasonic speakers let people who are blind read Braille in mid-air
Ultrasonic speakers let people who are blind read Braille in mid-air. Technology 27 May 2020 By Donna Lu An ultrasonic device could help people with visual impairments access private data in publicHaptic device being used at an ATMPeople who are blind can read Braille in mid-air using their hands thanks to a grid of speakers that emit ultrasound waves. The device create points in the air that are similar to the dots that form Braille character. 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.
Important Announcement – EasyShiksha has now started Online Internship Program “Ab India Sikhega Ghar Se”
The assistance system for visually impaired people has been implemented by using ultrasonic principle to provide navigation. 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 microcontroller.
Top Courses in Software Engineering
More Courses With Certification
A high frequency sound signal would be sent by an ultrasonic sensor which is used in the system for obstacle detection, then the signal would be reflected back to the sensor, detect the liquid obstacle. When there is a liquid obstacle and the sensor comes into the vicinity of water, then the wires associated with the sensor (two wires) get short circuited. After this an alert would be generated and sent to the respective blind person through a voice message. The sequence generates an analog output and provides the moisture content information. A microcontroller present in the system would receive all this information and then further process it. After this the information would proceed to Bluetooth.
Empower your team. Lead the industry
Get a subscription to a library of online courses and digital learning tools for your organization with EasyShiksha
Request NowQ. Are EasyShiksha's internships truly free?
Yes, all internships offered by EasyShiksha are completely free of charge.
Q. How can I apply for an internship with EasyShiksha?
You can apply by visiting our website, browsing available internships, and following the application instructions provided.
Q. What types of internships are available through EasyShiksha?
EasyShiksha offers a wide range of internships across technology, business, marketing, healthcare, and more. Opportunities are continuously updated.
Q. Will I receive a certificate upon completing an internship?
Yes, upon successful completion, you will receive a certificate recognizing your participation and achievements.
Q. Are EasyShiksha's internship certificates recognized by universities and employers?
Yes, the certificates are recognized by universities, colleges, and employers worldwide.
Q. Is the download of certificates free or paid?
Access to internships and courses is free, but there is a small fee to download certificates, covering administrative costs.
Q. When can I start the course?
You can choose any course and start immediately without delay.
Q. What are the course and session timings?
These are fully online courses. You can learn at any time and pace. We recommend following a routine, but it depends on your schedule.
Q. What will happen when my course is over?
After completion, you will have lifetime access to the course for future reference.
Q. Can I download the notes and study material?
Yes, you can access and download course materials and have lifetime access for future reference.
Q. What software/tools would be needed for the course?
All necessary software/tools will be shared during the training as needed.
Q. I’m unable to make a payment. What should I do?
Try using a different card or account. If the problem persists, email us at info@easyshiksha.com.
Q. Do I get the certificate in hard copy?
No, only a soft copy is provided, which can be downloaded and printed if required.
Q. The payment got deducted but shows “failed”. What to do?
Technical errors may cause this. The deducted amount will be returned to your account in 7-10 working days.
Q. Payment was successful but dashboard shows ‘Buy Now’?
Sometimes payment reflection is delayed. If it takes longer than 30 minutes, email info@easyshiksha.com with the payment screenshot.
Q. What is the refund policy?
If you face technical issues, you can request a refund. No refunds are issued once the certificate has been generated.
Q. Can I enroll in a single course?
Yes, select the course of interest, fill in the details, make payment, and start learning. You will also earn a certificate.
Q. My questions are not listed above. I need further help.
Contact us at info@easyshiksha.com for further assistance.
I hope you like this blog, Ultrasonic speakers let people who are blind read Braille in mid-air. To learn more visit Hawkscode and Easyshiksha.
ALSO READ: brain-and-artificial-neurons
Get Course: india-start-up-and-small-business-registration-and-business
