Patent ID: 9274065
Filing Date: 2016-03-01
CPC Classification: G01V

Claim Text:
1. An X-ray system for scanning moving cargo, the system comprising: an X-ray source for generating a cone-beam of X-rays to irradiate the moving cargo, wherein the moving cargo travels along a linear trajectory perpendicular to the plane of the cone-beam of X-rays and wherein the X-ray source is a dual energy source configured to generate a high energy beam and a low energy beam; at least one two-dimensional detector array, comprising a plurality of pixels, to receive the cone-beam of X-rays transmitted through the moving cargo, wherein said X-ray source and said at least one detector array are placed on opposite sides of the moving cargo; a sensor to measure a speed of the moving cargo; and a control system for receiving data indicative of said speed from the sensor and modulating a pulse rate of the cone-beam of X-rays based upon the speed of the moving cargo and a dimension of said detector array, wherein the control system modulates the pulse rate such that a distance travelled by the moving cargo between a first X-ray pulse and a second X-ray pulse is substantially equal to a width of the detector array and each of said plurality of pixels in the detector array is irradiated once with the high energy beam and once with the low energy beam and wherein the control system acquires data generated from the first pulse and data generated from the second pulse and processes half of said data from the first pulse in combination with half of said data from the second pulse to form a materials separation image.