<p> One of the major challenges faced by the blind and the visually impaired in their daily activities, is independent navigation in an urban setting. There may be protrusions, potholes, excavations, vehicles, etc. on their path. The main aim of the assistive devices is to make the visually impaired or the blind more independent and self-sufficient. White canes and guide dogs are the primitive mobility aids they use. Currently there are many Electronic Travel Aids (ETA) and Accessible Pedestrian Signals (APS) available in the market such as the smart canes, radix rotating cone, etc.</p><p> This project presents the development, hardware implementation and testing of an Electronic Travel Aid (ETA) system, which can be used by the blind or the visually impaired for independent navigation within an urban environment. The system uses nRf24L01+ radio modules to communicate information about the street grid to user. The information includes distance to the next intersection, structure of the intersection, intersection name, and pedestrian signal status. The information is received on a hand-held device and can be converted to a voice signal by a speech synthesis device.</p>
| Identifer | oai:union.ndltd.org:PROQUEST/oai:pqdtoai.proquest.com:10196503 |
| Date | 04 January 2017 |
| Creators | Timiri Vijayakumar, Siddharth |
| Publisher | California State University, Long Beach |
| Source Sets | ProQuest.com |
| Language | English |
| Detected Language | English |
| Type | thesis |
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