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Ultrasonic Tag Recognition

Cliff Randell, Paul Duff, Michael McCarthy, Henk Muller, Ultrasonic Tag Recognition . Advances in Wearable Computing 2009. ISBN 978-3-85403-248-9, pp. 87–88. September 2009. PDF, 80 Kbytes.

Abstract

The tagging of objects or people with devices containing some form of unique ID that can be read remotely is a valuable technique for wearable computing applications. Many technologies have been adopted to support this functionality ranging from RFID tags to printed QR codes. In this demo we present an ultrasonic tag design with a range of over 8 metres which can be implemented using low power microcontrollers for both the tag and the receiver. In addition by using multiple devices we are able to achieve position estimation with an accuracy of better than 10cm.

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