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A group of undergraduate engineering students at Central Michigan University have recently completed work on a prototype system designed to help guide blind people, and to help them avoid obstacles in their paths. The system employs RFID and ultrasonic technology incorporated into a cane that its developers hope will eventually result in a commercial product.

When devising technology for aiding the blind, says Kumar Yelamarthi, an assistant professor of electrical engineering at Central Michigan, the two major design criteria are to enhance a user's safety, and to provide a means for that individual to orient himself to his surroundings. To achieve these goals, an ultrasonic sensor for detecting objects in a user's path is mounted on the cane, near the handle. For navigation, an EPC Gen 2 UHF RFID reader and antenna, carried in a messenger bag, detects RFID tags embedded in the sidewalk.

Read the whole story at RFIDJournal.com.

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