High-speed security inspection system
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United States of America Patent
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Jun 30, 2020
Grant Date -
Jan 26, 2017
app pub date -
Jan 21, 2016
filing date -
Feb 8, 2012
priority date (Note) -
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Abstract
The present specification discloses a high speed scanning system for scanning cargo carried by rail. The system uses of a two-dimensional X-ray sensor array with, in one embodiment, a cone-beam X-ray geometry. The pulse rate of X-ray source is modulated based on the speed of the moving cargo to allow a distance traveled by the cargo between X-ray pulses to be equal to the width of the detector, for a single energy source, and to half the width of the detector for a dual energy source. This ensures precise timing between the X-ray exposure and the speed of the passing object, and thus accurate scanning of cargo even at high speeds.
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