scholarly journals Design and implementation of huvigation for the visually impaired

2018 ◽  
Vol 7 (3.3) ◽  
pp. 124
Author(s):  
Jinhyeok Jang ◽  
Youngseok Lee
Keyword(s):  
Visually Impaired ◽  
Detection Method ◽  
Voice Recognition ◽  
Obstacle Detection ◽  
Ultrasonic Sensor ◽  
Input Device ◽  
Web Page ◽  
Ultrasonic Sensors ◽  
Design And Implementation ◽  
Navigation Function

Background/Objectives: Visual impairments should take the risk alone, we need to design a Huvigation because it is necessary to study the route and surrounding dangerous obstacles with a convenient device.Methods/Statistical analysis: Set the destination using voice recognition and braille input device to help the users find the way, guided by voice when user want, obstacles are read using an ultrasonic sensor. In the obstacle detection method, prioritize in the direction of things by three ultrasonic sensors. And the user recognize the direction of things reduces the probability of strike the object than other functions.Findings: The proposed system can set the destination using speech recognition or a braille input device. The information is transmitted to a navigation web page linked with the input destination, and navigation is guided using the navigation function. This device transmits the information received using a speaker. This device receives information from the ultrasonic sensor. When objects come into range, a voice is transmitted to the user to prevent collision. When the user arrives at the destination, It announces the arrival using the speaker, and wait for the next command.Improvements/Applications: The safety of the user is ensured through three ultrasonic sensors. Every time the user moves and checks the location information and provides movement information. 

Influence of Acoustical Absorbing Material on the Obstacle Detection Angle of an Ultrasonic Sensor

2013 ◽  
Vol 393 ◽  
pp. 988-992
Author(s):  
Z.A. Kamarulbaharin ◽  
N. Rahmat
Keyword(s):  
Visually Impaired ◽  
Obstacle Detection ◽  
Ultrasonic Sensor ◽  
Ultrasonic Sensors ◽  
Detection Angle ◽  
Absorbing Material ◽  
White Cane ◽  
Navigational Aids ◽  
Impaired Person ◽  
Electronic Travel Aids

Navigation aid is important for the visually impaired person to travel safely. A white cane is normally used to detect obstacles in the persons path but it is limited in its detecting ability as it can only detect obstacles around the length of the cane and is unable to detect moving or overhanging objects. Many types of navigational aids are being developed using ultrasonic sensors to assist the visually impaired to detect obstacles and they are known as Electronic Travel Aids. This paper is focused on studying the influence of acoustical absorbing material on the obstacle detection angle of an ultrasonic sensor. Results showed that a tube lined with acoustical absorbing material attached to the sensor is able to narrow the detection angle for more precise obstacle detection.

scholarly journals An Assistive Bag for Blind and Deaf

2018 ◽  
Vol 7 (3.12) ◽  
pp. 1081
Author(s):  
G Joselin Retna Kumar ◽  
Showme . ◽  
Purva Saxena ◽  
Uday Kumar Mamidala ◽  
Anupam Pammi
Keyword(s):  
Visually Impaired ◽  
Voice Recognition ◽  
Obstacle Detection ◽  
Assistive Device ◽  
Home Automation ◽  
External Device ◽  
Visual Aids ◽  
Location Update ◽  
Ultrasonic Sensors ◽  
Emergency Situations

People with disabilities who use visual aids like hearing aid, blind stick for obstacle detection while walking etc. are often discriminated in the society as they are handicapped. The main focus of this paper is to create an assistive device for the visually impaired as well as the deaf to make them socially acceptable without showing their disability to the society by using visible aid. It is incorporated with features like GPS location update, GSM-based messaging system to notify relatives of the location of the user in case of emergency situations and voice recognition based home automation. It uses ultrasonic sensors to detect obstacles and vibration motors to notify the user about the obstacle thus eliminating the use of external device for communication.  

A novel obstacle detection method based on deformable grid for the visually impaired

2015 ◽  
Vol 61 (3) ◽  
pp. 376-383 ◽  
Author(s):  
Mun-Cheon Kang ◽  
Sung-Ho Chae ◽  
Jee-Young Sun ◽  
Jin-Woo Yoo ◽  
Sung-Jea Ko
Keyword(s):  
Visually Impaired ◽  
Detection Method ◽  
Obstacle Detection

scholarly journals DESIGNING WRISTBANDS AS A WALKING AID FOR THE ARDUINO NANO-BASED VISUALLY IMPAIRED

2021 ◽  
Vol 2 (2) ◽  
pp. 7-13
Author(s):  
Budi Prijo Sembodo ◽  
Moh. Thoyib
Keyword(s):  
Success Rate ◽  
Visually Impaired ◽  
Rotation Angle ◽  
Ultrasonic Sensor ◽  
Servo Motor ◽  
Ultrasonic Sensors ◽  
Testing Tools ◽  
Walking Aids ◽  
Walking Aid

In the 4.0 era, walking aids for the visually impaired are needed, especially when the user is indoors and outdoors. There are already many tools created, one of which the author wants to make is a wristband. Components include: Ultrasonic Sensor HC-SR04, Arduino Nano, Servo SG90 Motor, and Buzzer. The stages in this study are designing hardware, designing programs, and implementing and testing tools. The testing carried out on this tool is to read the results of objects with distances of 80cm, 90cm, 100cm, 110cm and 120cm. Not only did it test the distance, it also tested the rotation angle performed by the servo motor to drive ultrasonic sensors by 0o,60o,and 120o. It aims to be able to detect in any direction. The results of this tool test have a repeatability rate of 98%, as well as a 97.33% success rate for detecting objects.

scholarly journals Conceptual design and implementation of electronic spectacle based obstacle detection for visually impaired persons

2016 ◽  
Vol 10 (7) ◽  
pp. JAMDSM0094-JAMDSM0094
Author(s):  
Anuar MOHAMED KASSIM ◽  
Takashi YASUNO ◽  
Hiroshi SUZUKI ◽  
Mohd SHAHRIEEL MOHD ARAS ◽  
Hazriq IZZUAN JAAFAR ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Visually Impaired ◽  
Obstacle Detection ◽  
Design And Implementation ◽  
Visually Impaired Persons

scholarly journals Cost-Effective Vision based Obstacle Avoidance System integrated Multi Array Ultrasonic sensor for Smart Wheelchair

2019 ◽  
Vol 8 (4) ◽  
pp. 6988-6993
Keyword(s):  
Real Time ◽  
Obstacle Avoidance ◽  
Motor Impairment ◽  
Cost Effective ◽  
Obstacle Detection ◽  
Ultrasonic Sensor ◽  
Ultrasonic Sensors ◽  
Kinect Camera ◽  
The Right ◽  
Smart Wheelchair

A smart wheelchair (SW) is a power wheelchair (PW) consist of microcontroller, actuators, sensor, and implement the assistive technology in system architecture. Users with severe motor impairment may realize the difficulty to operate a wheelchair when they are in a tight space such as passing a doorway or when avoiding obstacles since, they are unable to control the wheelchair. This project embarked on an obstacle avoidance system of a wheelchair. This project developed a cost-effective system that alarmed the user to avoid obstacle on its path. The prototype includes a Kinect camera and ultrasonic sensors. Kinect camera was placed at the right side of the wheelchair for real time video obstacle detection. Four of the ultrasonic sensors was used to detect obstacle at the front and one ultrasonic sensor for rear obstacle detection. Any obstacle detected by the ultrasonic sensors triggered the buzzer. Obstacle detected by Kinect camera was displayed with specific command for the user in attempt for obstacle avoidance. The performance of the obstacle avoidance system was tested indoor to detect obstacles in a controlled environment. The accuracy of the ultrasonic system was tested at a specific distance of 20mm to 200mm at 20mm intervals. Real time video received from the Kinect Camera was used to analyse the depth of the environment and the location of the object.

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