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 Alat Bantu Jalan Sensorik bagi Tunanetra

INKLUSI ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 285
Author(s):  
Asep Kurniawan
Keyword(s):  
Success Rate ◽  
Visually Impaired ◽  
Ultrasonic Sensor ◽  
Blind People ◽  
Servo Motor ◽  
Output Device ◽  
Testing Tools ◽  
Mobility Aids ◽  
Develop Technology

The existing mobility aids for the visually impaired today still have several shortcomings, so it is necessary to develop technology that can help them walk better. This study aims to create a walker with sensors that can move right and left. Research also tests its accuracy, precision, and success. In making the tool, two steps are taken: making tools and testing tools. The device consisted of an HC-SR04 ultrasonic sensor, two Arduino Nano, an SG90 servo motor, and a buzzer. The product then was tested by reading distances at variations of 60cm, 70cm, 80cm, 90cm and 100cm. In addition to distance testing, the instrument is also tested at 0 °, 30 ° right and left angles and 60 ° right and left — output device in the form of a buzzer sound. This design of mobility aids for the blind people have an accuracy of 99.995% and a precision (repeatability) of 98.600%. Meanwhile, this tool has a percentage of the success rate of 98,400%.[Alat bantu jalan bagi tunanetra saat ini masih memiliki kekurangan sehingga diperlukan pengembangan teknologi yang dapat membantu mereka berjalan. Penelitian ini bertujuan untuk membuat alat bantu jalan dengan sensor yang dapat bergerak ke kanan dan ke kiri serta menguji akurasi, presisi, dan tingkat keberhasilan alat. Penelitian dilakukan dalam dua tahap yaitu membuat alat dan menguji alat. Alat dibuat menggunakan sebuah sensor ultrasonik HC-SR04, dua buah arduino nano, sebuah motor servo SG90, dan sebuah buzzer. Alat diuji dengan membaca jarak pada variasi 60cm, 70cm, 80cm, 90cm, dan 100cm. Selain pengujian jarak, alat juga diuji pada sudut 0°, 30° kanan dan kiri serta 60° kanan dan kiri. Output alat berupa bunyi buzzer. Hasil penelitian rancang bangun alat bantu jalan bagi penyandang tunanetra yang telah dibuat memiliki akurasi 99,995% dan presisi (repeatability) sebesar 98,600%. Adapun, alat ini memiliki persentase tingkat keberhasilan sebesar 98,400 %.]

Analysis and Implementation for a Walking Support System for Visually Impaired People

2011 ◽  
Vol 1 (3) ◽  
pp. 46-62 ◽  
Author(s):  
Eklas Hossain ◽  
Md Raisuddin Khan ◽  
Riza Muhida ◽  
Ahad Ali
Keyword(s):  
Mathematical Models ◽  
Support System ◽  
Visually Impaired ◽  
Blind People ◽  
Infrared Sensor ◽  
Servo Motor ◽  
Ultrasonic Sensors ◽  
Visually Impaired People ◽  
Impaired People

Visually impaired people are faced with challenges in detecting information about terrain. This paper presents a new walking support system for the blind to navigate without any assistance from others or using a guide cane. In this research, a belt, wearable around the waist, is equipped with four ultrasonic sensors and one sharp infrared sensor. Based on mathematical models, the specifications of the ultrasonic sensors are selected to identify optimum orientation of the sensors for detecting stairs and holes. These sensors are connected to a microcontroller and laptop for analyzing terrain. An algorithm capable of classifying various types of obstacles is developed. After successful tests using laptop, the microcontroller is used for the walking system, named ‘Belt for Blind’, to navigate their environment. The unit is also equipped with a servo motor and a buzzer to generate outputs that inform the user about the type of obstacle ahead. The device is light, cheap, and consumes less energy. However, this device is limited to standard pace of mobility and cannot differentiate between animate and inanimate obstacles. Further research is recommended to overcome these deficiencies to improve mobility of blind people.

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. 

Analysis and Implementation for a Walking Support System for Visually Impaired People

2013 ◽  
pp. 179-195 ◽  
Author(s):  
Eklas Hossain ◽  
Md Raisuddin Khan ◽  
Riza Muhida ◽  
Ahad Ali
Keyword(s):  
Mathematical Models ◽  
Support System ◽  
Visually Impaired ◽  
Blind People ◽  
Infrared Sensor ◽  
Servo Motor ◽  
Ultrasonic Sensors ◽  
Visually Impaired People ◽  
Impaired People

Visually impaired people are faced with challenges in detecting information about terrain. This paper presents a new walking support system for the blind to navigate without any assistance from others or using a guide cane. In this research, a belt, wearable around the waist, is equipped with four ultrasonic sensors and one sharp infrared sensor. Based on mathematical models, the specifications of the ultrasonic sensors are selected to identify optimum orientation of the sensors for detecting stairs and holes. These sensors are connected to a microcontroller and laptop for analyzing terrain. An algorithm capable of classifying various types of obstacles is developed. After successful tests using laptop, the microcontroller is used for the walking system, named ‘Belt for Blind’, to navigate their environment. The unit is also equipped with a servo motor and a buzzer to generate outputs that inform the user about the type of obstacle ahead. The device is light, cheap, and consumes less energy. However, this device is limited to standard pace of mobility and cannot differentiate between animate and inanimate obstacles. Further research is recommended to overcome these deficiencies to improve mobility of blind people.

Semi Automatic T-Shirt Folding Machine Berbasis PID (Proportional Integral Derivative)

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Muhammad Apriliyanto ◽  
Miftachul Ulum ◽  
Koko Joni
Keyword(s):  
Ultrasonic Sensor ◽  
Proportional Integral Derivative ◽  
Servo Motor ◽  
Aesthetic Value ◽  
Proportional Integral ◽  
Door Opening ◽  
Dc Motors ◽  
The Aesthetic ◽  
The Right

<em>The process of folding clothes is one of the activities carried out in the laundry business or household. The activity is fairly easy but many people are still lazy to do it. As a result, clothes that have been washed will fall apart in certain rooms, thereby reducing the aesthetic value of a home. Semi Automatic T-Shirt Folding Machine is the right solution to make folding clothes easier and more time efficient. This tool is equipped with a servo motor that moves the folding board that has been designed in such a way that the user only needs to manghandle the shirt just once and simply push one button then the shirt will fold itself and will be neatly arranged through the clothes stacker board. The PID method is applied to DC motors that move under the clothes folder so that the buildup of clothes underneath will not be pressured upward when the clothes are piled up when they are folded. Ultrasonic sensor will measure the right height between the clothes with the door opening the stacking clothes with kp = 1, ki = 0.1, kd = 0.5 for thin clothes and kp = 5, ki = 1, kd = 2.5 for thick clothes so that the movement of the motor can adjust its speed . This tool can fold one shirt in 16.83 seconds 11 seconds faster than folding clothes manually</em>

Forced-Choice Preferential Looking and Visual Evoked Potential Acuities of Visually Impaired Children

1992 ◽  
Vol 86 (1) ◽  
pp. 21-24 ◽  
Author(s):  
M.C. Bane ◽  
E.E. Birch
Keyword(s):  
Steady State ◽  
Success Rate ◽  
Visually Impaired ◽  
Visual Evoked Potential ◽  
Evoked Potential ◽  
Forced Choice ◽  
Preferential Looking ◽  
Impaired Children ◽  
Visually Impaired Children ◽  
Visual Evoked

In the authors’ previous study, the success rate for forced-choice preferential looking (FPL) with preverbal visually impaired children was higher than that with pattern visual evoked potential (VEP). The current study sought to increase the VEP success rate and to improve agreement between the FPL and the VEP acuity estimates using horizontal-bar stimuli for children with nystagmus and steady-state presentation for those without nystagmus.

scholarly journals Calibration of ultrasonic sensors of a mobile robot

2009 ◽  
Vol 6 (3) ◽  
pp. 427-437 ◽  
Author(s):  
Ivan Paunovic ◽  
Darko Todorovic ◽  
Miroslav Bozic ◽  
Goran Djordjevic
Keyword(s):  
Signal Processing ◽  
Mobile Robot ◽  
Calibration Procedure ◽  
Ultrasonic Sensor ◽  
Robot Localization ◽  
Ultrasonic Sensors ◽  
Nonlinear Characteristics ◽  
Mobile Robot Localization

The paper discusses a mobile robot localization. Due to cost and simplicity of signal processing, the ultrasonic sensors are very suitable for this application. However, their nonlinear characteristics requires thorough calibrating procedure in order to achieve reliable readings from the obstacles around the robot. Here we describe SMR400 ultrasonic sensor and its calibration procedure. The suggested calibration procedure was tested through a number of experiments, and the results are presented in this paper. .

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