Use of ultrasonic sensors in the development of an Electronic Travel Aid

Gearhart, Chris; Herold, Alex; Self, Brian P.; Birdsong, Charles; Slivovsky, Lynne A.

doi:10.1109/sas.2009.4801815

Cited by 28 publications

(13 citation statements)

References 7 publications

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“…Triangulation using multiple sensors, as described in Gearhart, Herold, Self, Birdsong, and Slivovsky (2009), could allow users to receive more detailed information on the direction Downloaded by [University of Saskatchewan Library] at 04:57 03 February 2015 of the detected object, which some users felt would be useful. However, this would increase the cost of the device and would take longer to learn, defeating the primary aims of this ETA.…”

Section: Performance Measures Of An Electronic Secondary Mobility Aidmentioning

confidence: 99%

A Detachable Electronic Device for Use With a Long White Cane to Assist With Mobility

O'Brien

Mohtar

Diment

et al. 2014

Assistive Technology

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Vision-impaired individuals often use a long white cane to assist them with gathering information about their surroundings. However, these aids are generally not used to detect obstacles above knee height. The purpose of this study is to determine whether a low-cost, custom-built electronic device clipped onto a traditional cane can provide adequate vibratory warning to the user of obstacles above knee height. Sixteen normally sighted blindfolded individuals participated in two mobility courses which they navigated using a normal white cane and a white cane with the electronic device attached. Of the 16 participants, 10 hit fewer obstacles, and 12 covered less ground with the cane when the electronic device was attached. Ten participants found navigating with the electronic device easier than just the white cane alone. However, the time taken on the mobility courses, the number of collisions with obstacles, and the area covered by participants using the electronic device were not significantly different (p > 0.05). A larger sample size is required to determine if the trends found have real significance. It is anticipated that additional information provided by this electronic device about the surroundings would allow users to move more confidently within their environment.

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Section: Performance Measures Of An Electronic Secondary Mobility Aidmentioning

confidence: 99%

A Detachable Electronic Device for Use With a Long White Cane to Assist With Mobility

O'Brien

Mohtar

Diment

et al. 2014

Assistive Technology

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“…tronic device that emits and/or n order to sense some aspect of an object is close to the sensor, mitter led bounces off the object ISBN is determined by the material properties an medium [15]. Laplace proposed that the speed of a long given Where, from equation (1) Block diagram of distance calc Fig.…”

Section: A Ultrasonic Sensormentioning

confidence: 99%

An electronic walking stick for blinds

Chaurasia

Kavitha

2014

International Conference on Information Communication and Embedded Systems (ICICES2014)

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Independence is the building methodology in achieving dreams, goals and objectives in life. Visually impaired persons find themselves challenging to go out independently. There are millions of visually impaired or blind people in this world who are always in need of helping hands. For many years the white cane became a well-known attribute to blind person's navigation and later efforts have been made to improve the cane by adding remote sensor. Blind people have big problem when they walk on the street or stairs using white cane, but they have sharp haptic sensitivity. The electronic walking stick will help the blind person by providing more convenient means of life. The main aim of this paper is to contribute our knowledge and services to the people of blind and disable society.

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“…Triangulation is a procedure to determine the position of an object or a target from known points using trigonometric techniques. In general, the number of dimensions of the estimated position of an object is directly related to the number of sensors, for instance, two sensors can indicate a location in 2D, while three sensors can indicate a 3D location and so on [16].…”

Section: Triangulationmentioning

confidence: 99%

Low Cost Binaural System Based on the Echolocation

Moreira

Lima

Costa

et al. 2019

Advances in Intelligent Systems and Computing

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Ultrasonic sensors offers attractive features at an affordable cost. The main problem faced by the use of these devices is that the data obtained are not so easy to interpret , restricting their efficiency. This paper describes a binaural sensor system that is able to determine the coordinates of an object or a target in a two-dimensional space, focusing on mathematical and signal processing techniques to provide accurate measurements and increase the system reliability. The proposed work consists only of low cost components, which aims to demonstrate that improvement is possible. Experimental tests, performed in different scenarios, reported good accuracy and repeatability of the measurements.

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Use of ultrasonic sensors in the development of an Electronic Travel Aid

Abstract: Abstract

Cited by 28 publications

References 7 publications

A Detachable Electronic Device for Use With a Long White Cane to Assist With Mobility

A Detachable Electronic Device for Use With a Long White Cane to Assist With Mobility

An electronic walking stick for blinds

Low Cost Binaural System Based on the Echolocation

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