As a guest user you are not logged in or recognized by your IP address. You have
access to the Front Matter, Abstracts, Author Index, Subject Index and the full
text of Open Access publications.
The main goal of Electronic Travel Aids is to detect obstacles and provide information to help visually impaired people safely navigate the surroundings. To achieve an efficient ETA design, the properties of the integrated sensors need to be considered for their suitability. This paper investigates the characteristics of two types of proximity sensors for this purpose. The transfer functions of an infrared and an ultrasonic sensor were determined. For the latter, we also examined the detection threshold for different obstacle distances, and reconstructed the beam shape in 3D. For the ultrasonic sensor, a width detection threshold of 12 mm was found for a distance of 3 m, with an important increase beyond 3 m. These characteristics provide insights into the suitability of two low-cost proximity sensors for ETAs.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.