Patent ID: 11860333
Assignee: THE GOVERNMENT OF THE UNITED STATES OF AMERICA, REPRESENTED BY THE SECRETARY OF HOMELAND SECURITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The screening system of claim 1, wherein the plurality of sensor elements is actuatable to impart an impulse to the item, the controller further configured to:
direct the conveyor to advance the item to the current sensing position for the sensor array;
actuate at least one of the plurality of sensor elements to apply at least a portion of the impulse to the item, a given one of the plurality sensor elements imparting a force to a given pixel mass element corresponding to a given coordinate on a base surface of the item interacting with the given sensor element;
acquire feedback information from the plurality of sensor elements for the current sensing position, the feedback information including force information and displacement information corresponding to a return pulse from the item responsive to applying at least a portion of the impulse to the item;
incrementally advance the item and repeat, for additional sensing positions, acquiring feedback information for remaining ones of the plurality of sensing positions;
generate a dynamic acceleration map and an inertial mass map of the item by processing the force information and displacement information for the plurality of sensing positions, the dynamic acceleration map being a dynamic acceleration measurement vector of the item and the inertial mass map being a dynamic acceleration measurement vector of the item, corresponding to a surface of the item interacting with the plurality of sensor elements; and
perform tomographic reconstruction to generate the tomographic image of the item, using the dynamic acceleration map as a dynamic acceleration input vector and using the inertial mass map as an inertial mass input vector for the tomographic reconstruction.