FIELD OF THE INVENTION
These Ultrasonic Smart Glasses for Blind people is a portable device, easy to use, light weight, user friendly and
cheap in price. These glasses could easily guide the blind people and help them avoid obstacles. The concept of
obstacle detection by ultrasonic sensor has been used here. As soon as the obstacle is detected by the sensor, its
distance it sent to the Arduino. It converts the distance into centimetres from milliseconds and then check
whether the distance of obstacle is less than 3m, if yes then we send the output through a buzzer. The beeping of
the buzzer is directly proportional to the distance of the obstacle from human.
DESCRIPTION OF THE RELATED ART
Obstacle detector apparatus with enhanced stereo imaging capability includes a sonar system [1] including sonar
ranging system which transmits a first pressure wave. The vehicle alert system [2] which detects objects within
a predetermined distance through sensor. This innovative idea robot obstacle detection system [3] through a
sensor subsystem aimed at the surface for detecting the surface. Here a mobility cane [4] use by a visually
impaired person handles cylindrical shape. A virtual extension of the senses of the fingertip [5] for
environmental sensor using a 3-D line sensor it collect the information. Another idea shows electronic blind
guidance cane [6] which connect electric eye system, and a cordless earphone with buzzer disposed and makes
attention of the user. Using sonar, LIDAR, RF, or radar sensors obstacle detection [7] and it also provide
feedback [8] A blind user of a smart device with two sensor, one identify the location and another one take input
of the object information.
BACKGROUND OF THE INVENTION
It is very hard for a blind person in tracking the obstacle in front of him with a blind stick. Here using these
blind glasses a blind person can wear this and walk along. As he approaches an obstacle, wearing the glass, the
frequency of the sound in the glass will increase, indicating the person about the upcoming obstacle, so that
he/she can change direction. These smart glasses can be available in cost of a blind stick.
SUMMARY OF THE INVENTION
Accordingly, it is an obstacle of the present invention to provide user friendly and easy operation. Another
obstacle of the present invention is to provide a light weight portable device which can use any person
anywhere. An additional obstacle of the present invention is to provide low cost device. A smart ultrasonic
glasses for blind people comprises of a pair of wearable glasses, ultrasonic sensors for detection of obstacles in
the way of blind man, a buzzer to give the sound as per the direction of the obstacle from the man, a central
processing unit comprising of Arduino NANO which takes the information from the sensor about the obstacle
distance and processes the information according to the coding done and sends the output through the buzzer,
power supply is given to the central unit which distributes the power to different components. The sensor is
mounted in between of the top bar and bridge present in optical glasses. All the components are connected to the
central unit using single strand copper wires and the power is given to the central unit using a USB cable.

Claims:We claim
1. This low cost ultrasonic smart glass for blind persons where an ultrasonic sensor is being used for obstacle detection.
2. As claimed in claim 1, the obstacle detection is done through ultrasonic distance sensor. In this innovation this ultrasonic distance sensor transmits ultrasonic sound wave which will be reflected from an obstacle and the sensor will again receive the reflected wave coming from the obstacle. Then the sensor will send the total travel time of transmitting and receiving the sound to microcontroller. After that, the microcontroller will calculate the distance of obstacle from the total travel time of sound wave by using the speed of sound in the air. Then the microcontroller sends proportional frequency to buzzer according to obstacle distance.
3. As claimed in claim 2, distance of obstacle calculation by ultrasonic sound reflection technology. This ultrasonic smart glass is operated by using any kind of mobile power bank.
4. As per the above claims we clamed, that this innovation can be replaced with blind stick. This is cost effective and also very user friendly. ,