Mechanisms for Combining Infrared and Ultrasound Signals for Indoor Wireless Localization

Mechanisms for Combining Infrared and Ultrasound Signals for Indoor Wireless Localization

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We implement a time difference of arrival (TDOA) mechanism in which the localization beacons send simultaneous infrared and ultrasound pulses which are received at localization modules, which compute the distance to a beacon by measuring the TDOA between the IR and the US signals. Applications of such indoor localization systems include robot navigation, location-aware sensor network protocols, equipment localization, and various location-based wireless services.4.1.1 Overview of System Figures 7 and 8 show block diagrams of the listener and beacon used in the indoor location system based on Infrared and Ultrasound signals. Each module consists of a microcontroller, ultrasound transducer and supporting circuits, and infrared devices. The beacon has the TFDU4300 IR transceiver configured as an IR transmitter, while the listener has the TSOP381 for IRanbsp;...


Title:Mechanisms for Combining Infrared and Ultrasound Signals for Indoor Wireless Localization
Author: David Rurangirwa
Publisher:ProQuest - 2007
ISBN-13:

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