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BHOS Tezisler 2022 17x24sm

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
195
SMART DEVICE FOR VISUALLY IMPAIRED PEOPLE 
Aysel Abdullayeva, Aytan Sadirova, Gulustan Abdullayeva 
Baku Higher Oil School 
Baku, Azerbaijan 
aysel.abdullayeva.std@bhos.edu.az, ayten.sadirova.std@bhos.edu.az, 
gulustan.abdullayeva.std@bhos.edu.az
Supervisor: Ph.D, Associate Professor Kamala Pashayeva 
Keywords: 
Smart cane, assistive technology, visually-impaired, sensor, ultrasonic
Introduction 
For many years, those blind people who used a cane relied on a whatever 
type of cane was available, such as walking sticks, for assistance. A common 
type of cane that began to appear in the twentieth century was the short, support 
cane. These canes are about waist-high and curve at the top. No formal 
methods on use or instruction for travel was developed for this cane. Physical 
movement is a challenge for visually impaired people, because it can 
become tricky to distinguish obstacles appearing in front of them, and they 
are not able to move from one place to another. Over the last decades, 
research has been conducted for new devices to design a good and reliable 
system for visually impaired people to detect obstacles and warn them at 
danger places. The main aim of this initiative is to enable the blind navigate 
with confidence and to be alert if their walking route becomes obstructed with 
other things, people or related odds.
 
Application
Ultrasonic Cane as a Navigation Aid (UltraCane):
 
Three ultrasonic trans-
receivers, X-bee-S1 trans-receiver module, two Arduino UNO 
microcontrollers, three LED panels, and piezo buzzer are used in this cane. 
The target of the three ultrasonic sensors is to detect the ground and aerial 
obstacles in range of 5 cm to 150 cm. Once an ultrasonic wave is detected, 
a control signal is generated and it triggers the echo pin of the 
microcontroller. The microcontroller records the width of the time duration of 
the height of each pin and transforms it to a distance. The control signal will 
be wirelessly transferred by X-bee to the receiving unit which would be worn 
on the shoulders. The buzzer will be played to alert the user based on the 
obstacle’s approach (high alert, normal alert, low alert and no alert).

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