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 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. 

Intelligent Navigation System using Ultrasonic Sensor for Visually Impaired Person (VIP)

2019 ◽  
Author(s):  
Nurul Hidayah Binti Abd Khafar ◽  
Dur Muhammad Soomro ◽  
Rahisham Abd Rahman ◽  
Mohd Noor Abdullah ◽  
Izhar Ahmed Soho ◽  
...  
Keyword(s):  
Navigation System ◽  
Visually Impaired ◽  
Ultrasonic Sensor ◽  
Impaired Person

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.

An inconspicuous, integrated electronic travel aid for visual impairment

2021 ◽  
pp. 1-9
Author(s):  
Alain Boldini ◽  
Andy L. Garcia ◽  
Marc Sorrentino ◽  
Mahya Beheshti ◽  
Okpe Ogedegbe ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Visual Impairment ◽  
Visually Impaired ◽  
Obstacle Detection ◽  
Electroactive Materials ◽  
Guide Dogs ◽  
White Cane ◽  
Strong Deterrent ◽  
Critical Aspects

Abstract With a globally aging population, visual impairment is an increasingly pressing problem for our society. This form of disability drastically reduces the quality of life and constitutes a large cost to the health care system. Mobility of the visually impaired is one of the most critical aspects affected by this disability, and yet it relies on low-tech solutions, such as the white cane and guide dogs. However, many avoid solutions entirely. In part, reluctance to use these solutions may be explained by their obtrusiveness, which is also a strong deterrent for the adoption of many new devices. In this paper, we leverage new advancements in artificial intelligence, sensor systems, and soft electroactive materials toward an electronic travel aid with an obstacle detection and avoidance system for the visually impaired. The travel aid incorporates a stereoscopic camera platform, enabling computer vision, and a wearable haptic device that can stimulate discrete locations on the user's abdomen to signal the presence of surrounding obstacles. The proposed technology could be integrated into commercial backpacks and support belts, thereby guaranteeing a discreet and unobtrusive solution.

scholarly journals Development of Obstacle and Pit-Detecting Ultrasonic Walking Stick for the Blind

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Suleiman A Yahaya ◽  
Lydia J Jilantikiri ◽  
Gbenga S Oyinloye ◽  
Emmanuel J Zaccheus ◽  
Joy O Ajiboye ◽  
...  
Keyword(s):  
Ultrasonic Sensor ◽  
Collision Rate ◽  
Blind Person ◽  
Ultrasonic Sensors ◽  
Development Environment ◽  
Integrated Development ◽  
Domestic Use ◽  
Mobility Aid ◽  
White Cane ◽  
Walking Stick

This project focused on improving mobility for a blind person by creating an obstacle and pit detecting walking stick using ultrasonic sensors. The project comprised of both hardware and software. The hardware consists of ultrasonic sensors, buzzers and a microcontroller, while the software consists of Arduino Integrated Development Environment (Arduino IDE), which was used to program the microcontroller. A Polyvinyl Chloride (PVC) casing was used to house the hardware components. The ultrasonic sensor that detects obstacles was programmed to detect obstacles at a distance of 100 cm or below and causes the buzzer to sound so as to alert the blind person. Another ultrasonic sensor was programmed to identify pit at a depression of 18 cm and above. This stick was tested to detect obstacles by 80 different blindfolded individuals within a room with different objects placed at different positions. Results showed that the percentage reduction of collision rate when comparing the developed ultrasonic walking stick to a normal white cane is 90.1%. This shows that the ultrasonic walking stick is reliable for domestic use by a blind person. Keywords— Arduino, ATmega328 Microcontroller, Blind walking stick, Mobility aid, Smart cane, Ultrasonic sensor.

scholarly journals DESIGNING A CONSTRUCTIVE GUIDANCE SYSTEM WITH REAL TIME OBJECT DETECTION FOR VISUALLY IMPAIRED

2021 ◽  
pp. 220-225
Author(s):  
Mrs.N.Deepika ◽  
Ms Joypriyanka.M
Keyword(s):  
Key Words ◽  
Visually Impaired ◽  
The Elderly ◽  
Ultrasonic Sensor ◽  
Guidance System ◽  
Smart System ◽  
Sensitive Issue ◽  
Visually Impaired People ◽  
Impaired People ◽  
Impaired Person

This paper proposes an effective device for visually impaired person in order to have betterment in their routine life. The spread of visually impairment is very sensitive issue worldwide. Here we develop a Smart system for visually impaired, that make use of ultrasonic sensor and camera.The most point of this work is to plan a voice-based cautioning framework for the outwardly impeded individuals. Visually impaired individual’s finds navigation difficult as they struggle every day in performing actions for bypassing obstacles and hurdles in their regular life. In order to help visually impaired people navigate safely and quickly this system is proposed. Ultrasonic sensor is set on the exhibition which is utilized for impediment location with separate sign. The camera is set to detect the object before the outwardly impeded individuals and alarm them utilizing APR voice module. This system prevents the visually impaired people accidents and identifies the object in front of them. The scope of the work is extracting the object’s image and processing them in the knowledge base and interpret the captured one. Assistive Innovation for individuals with outwardly disabilities is anticipated to develop at a quick pace and affect the lives of people having visual impedance and the elderly ways previously is not possible. KEY WORDS: SURF-Speedup Robust Feature, VPN- Visual Handling Unit, NCS-Neural Compute Adhere, APR-Apache Portable Runtime.

scholarly journals Obstacle Detection and Text Recognition for Visually Impaired Person Based on Raspberry Pi

2020 ◽  
Vol 9 (02) ◽  
pp. 01-07
Author(s):  
Mrs. Ritika Dhabliya
Keyword(s):  
Environmental Factors ◽  
Visually Impaired ◽  
Obstacle Detection ◽  
Text Recognition ◽  
Raspberry Pi ◽  
Open Door ◽  
Advanced Imaging ◽  
Visually Impaired People ◽  
Impaired People ◽  
Impaired Person

Autonomous travel is a notable test for visually impaired people and furthermore the expanding accessibility of cost proficiency, superior and versatile advanced imaging gadgets has made a gigantic open door for enhancing conventional checking for record picture securing. We propose a camera based visual help system utilizing raspberry pi for content perusing, movement of items and the sentiments of outwardly hindered people face various challenges to play out their everyday errand. They are absolutely or halfway subject to somebody for help. Their issues have made them to lose their would like to live in this contending society. They look for help from others to control them entire day. This paper expects to make the outwardly debilitated individual completely autonomous in all perspectives. The proposed framework depends on a virtual eye, which conveys to the outside encompassing through a camera. The camera goes about as a consistent wellspring of data to the framework. The information is gotten through the camera. They got signals from the information gadgets are dissected utilizing picture handling in LABVIEW and it reacts to the outwardly debilitated individual through discourse preparing units. The handled data about environmental factors will be educated through the speaker (yield unit) by which outwardly weakened individuals can move and make their work effectively all alone. Also the outwardly weakened individual can naturally control a portion of the home apparatuses like fan utilizing remote correspondence framework.

J1630301 Estimation of the Slipperiness of Road Surface by White Cane for Visually Impaired Person

2015 ◽  
Vol 2015 (0) ◽  
pp. _J1630301--_J1630301-
Author(s):  
Yusuke KUROKAWA ◽  
Motoji KAWASAKI ◽  
Mariko TSUKUNE ◽  
Xiaowei LU ◽  
Shigeki SUGANO ◽  
...  
Keyword(s):  
Visually Impaired ◽  
Road Surface ◽  
White Cane ◽  
Impaired Person

scholarly journals OBSTACLE DETECTION AND ELECTRONIC NAVIGATION SYSTEM FOR VISUALLY IMPAIRED PERSONS

2014 ◽  
pp. 151-153
Author(s):  
PRATEEK MISHRA ◽  
RAJ KISHOR PAL ◽  
SHIVOM KUSHWAHA ◽  
TUSHAR SRIVASTAVA ◽  
SURESH SHARMA
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Visually Impaired ◽  
Detection System ◽  
Obstacle Detection ◽  
Final Destination ◽  
Visually Impaired People ◽  
The Common ◽  
Impaired Person ◽  
Visually Impaired Persons

In This Paper we present a real time domain obstacle detection system for the visually impaired persons to improve their mobility in daily life with the help of obstacle detection sensor installed in their walking stick .System is having a lower cost so it is easily purchasable so it can have a major significance in life of visually impaired persons. This Paper proposes a system to detect any object attached to the floor regardless to their height [1]. Obstacle on the floor in the front of user can be reliably detected in real time using the proposed system implemented by the IR sensor installed on the walk stick of the visually impaired person. Project also contains a navigation system for visually impaired persons to make the life of such persons easier up to some extent. This project is suited for the area where the possibility of blind person is high (like blind school, college)[6]. For transport facility of blind we have first decided the common bus roots of blind then we have placed RF tag to all those buses with unique code. At the second side we have placed RF reader, microcontroller and voice processor. The RF reader receive unique code, microcontroller process this code with defined code, if match found, voice processor get activated and starts speaking bus name, initial destination and final destination. The obstacle detection is also included in the project with voice. The system aims at increasing the mobility of visually impaired people by offering new sensing abilities.

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