Title :
Cross measurement process with a ZigBee sensor network
Author :
Rodas, Javier ; Escudero, Carlos J.
Author_Institution :
Dept. de Electron. y Sist., Univ. da Coruna, Corua, Spain
Abstract :
Location systems based on Wireless Sensor Networks (WSN) and Receiver Signal Strength (RSS) mainly depend on how the measurements are obtained. Usually, there are some mobile nodes to be located that periodically send beacon frames, which are captured by an anchor sensor network. After combining this information, the system estimates node positions. However, it is well-known that these systems suffer from big inaccuracy problems due to environmental changes (obstacles, people, loose of line-of-sight, etc.), that produce fluctuations on RSS level. We introduce a cross measurement process to obtain more RSS data, getting information among the anchors and making possible to detect these changes, to perform appropriate fixes and calibrations.
Keywords :
sensor placement; wireless sensor networks; RSS level; Receiver Signal Strength; ZigBee sensor network; anchor sensor network; cross measurement process; location systems; mobile nodes; wireless sensor network; Calibration; Energy consumption; Face detection; Fluctuations; Hardware; Performance evaluation; Power system modeling; Relays; Wireless sensor networks; ZigBee;
Conference_Titel :
Signals, Systems and Computers, 2009 Conference Record of the Forty-Third Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-5825-7
DOI :
10.1109/ACSSC.2009.5470104
