A method to track the movement behind the wall or in total darkness has been developed. This application is very useful when the hostage crisis to take care to seniors.
Technique called Radio Tomography Imaging (RTI), using a wireless radio transceiver targeted zone. Both send and receive radio signals.
By analyzing variations in signal strength, a computer program can produce black and white images of objects movement. This approach is similar to medical tomography computing, in which a program to analyze a series of X-ray scanner to produce images of internal organs.
Joey Wilson and Neal Patwari of the University of Utah, examine the RTI with the transceiver 24 to 34 tubes. Transceiver that is used similar to that used in the Zigbee network, which connects the same home thermostat and automated device or home other factories. This system was successfully tested inside and outside the room and through walls.
"Radio tomography can assist law enforcement and emergency management so that they know where to focus our attention," writes Patwari and Wilson.
Monday, November 9, 2009
Artificial eyes can See through the wall
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