A device comprises: at least two lead curtains; a supporting assembly comprising a working area and a standby area; a first transmission assembly to drive the lead curtains to move in a conveying channel; and a second transmission assembly to transfer the lead curtains between the standby area and the working area, wherein the second transmission assembly transfers the lead curtains from the standby area to the working area, so that the lead curtains fall into a starting point of the conveying channel and are located behind an article to be detected; the first transmission assembly drives the lead curtains to move with the article to be detected in front and drive the lead curtains to move from the starting point of the working area to a starting point of the standby area; and the second transmission assembly drives the lead curtains to enter and move in the standby area.

A transport apparatus of an X-ray inspection system includes an inspection region with an entrance and an exit. The transport apparatus further includes a loading region disposed at the entrance of the inspection region, the loading region. The loading region includes a first set of X-ray attenuating curtains and a first curtain mover, which moves the curtains of the first set of X-ray attenuating curtains into and out of the loading region between areas that support objects for inspection. The transport apparatus further includes a conveyor device which moves an object for inspection residing in one of the areas from the loading region to the inspection region for inspection.

A system and associated method for isolating intended radiation signals for determining target characteristics includes multiple detectors for detecting radiation signals having varying energies, delay modules for delaying the detected radiation signals and a discriminator associated with the multiple detectors for determining if detected radiation signals include unintended radiation signals, e.g., x-rays, and provided blanking signals to a switch in order to effectively remove the unintended radiation signals from the data that is presented to the processor for determining target characteristics.

The present disclosure relates to vehicle traction apparatus and radiation imaging check systems. One illustrative implementation may comprise two parallel tracks, two sets of traction mechanisms and a driving unit, wherein the tracks are disposed on a ground. The two sets of traction mechanisms may be respectively disposed on the two tracks. Further, the driving unit may be adapted for driving the two sets of traction mechanisms to synchronously move along the two tracks. In some embodiments, each of the two sets of traction mechanisms includes a body, a cantilever, a lifting driving mechanism and a wheel supporting assembly, and may include features such as the body being mounted on the track, the cantilever being disposed parallel to a direction of the tracks, and/or both ends of the cantilever being respectively connected with the lifting driving mechanism and the wheel supporting assembly.

A large-area directional radiation detection system may include a large number of slab-shaped detectors stacked side-by-side and alternately displaced frontward and rearward, thereby providing a longitudinally-staggered array of protruding and recessed detectors. The protruding detectors collimate or restrict the lateral field of view of the recessed detectors, thereby enabling the angular position and distance of a source to be determined. The high detection efficiency and large solid angle of the staggered detector array enable rapid detection of even well-shielded threat sources at substantial distances, while simultaneously determining the positions of any sources detected. This detector array will be essential for guarding against clandestine delivery of nuclear materials in the coming century.

The present invention relates to a container search system comprising: a radiation irradiation unit for irradiating radiation to a container to be inspected; a detection unit installed opposite to the radiation irradiation unit to detect radiation having passed through a container; a transfer cart for loading an automobile thereon, on which a container to be inspected is loaded, and travelling along a search path formed between the radiation irradiation unit and the detection unit; and a circulation orbit unit formed to allow the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor for generating a moving magnetic field is formed on either side among the transfer cart and the search path and a secondary-side reaction plate for inducing a secondary eddy current due to the moving magnetic field and generating a linear driving force is formed on the other side thereof. The container search system can transfer a transfer cart according to a linear motor scheme in a radiation search section, and thus can obtain a radiation search image of high quality.

A radiation imaging apparatus provided with a detector capable of improving correction accuracy at a high counting rate. The present invention is provided with: grids that remove scattered beams that emanate from an object; and a plurality of detector sub-pixels arranged so as to divide the gap between the grids into three or more segments, wherein the area of each of the detector sub-pixels located below the wall surface of the grids is larger than that of each of the other detector sub-pixels in a planar view. The size of each of the detector sub-pixels not located below the wall surface of the grids is expressed as (P.sub.gT.sub.gL.sub.split2)/N, where P.sub.g represents the pitch between the grids, T.sub.g represents the thickness of each of the grids, and N represents the number of segments formed by the detector sub-pixels between the grids.

In some examples, it is disclosed a computer-implemented method for inspecting cargo in an open-topped vehicle, including: obtaining an estimate of a volume of the cargo in the open-topped vehicle, based on data obtained from a top-observation device, the top-observation device being configured to observe a top surface of the cargo in the open-topped vehicle during a mutual movement of the open-topped vehicle and the top-observation device; determining an estimate of a mass of the cargo in the open-topped vehicle, based on the obtained volume estimate; comparing the determined mass estimate with a reference mass associated with the cargo in the open-topped vehicle; and determining whether the cargo in the open-topped vehicle is in conformity with the reference mass, based on the comparing.

In some examples, it is disclosed a computer-implemented method for inspecting cargo in an open-topped vehicle, including: obtaining an estimate of a volume of the cargo in the open-topped vehicle, based on data obtained from a top-observation device, the top-observation device being configured to observe a top surface of the cargo in the open-topped vehicle during a mutual movement of the open-topped vehicle and the top-observation device; determining an estimate of a mass of the cargo in the open-topped vehicle, based on the obtained volume estimate; comparing the determined mass estimate with a reference mass associated with the cargo in the open-topped vehicle; and determining whether the cargo in the open-topped vehicle is in conformity with the reference mass, based on the comparing.

A containerized system for vehicle scanning, includes a container; the container having a vertically movable top portion of the container, the top portion including an X-ray source and a collimator; the container having a bottom portion, the bottom portion including a first linear X-ray detector; an entry ramp that rotates to a vertical position in a transportable state and functions as a first wall of the container, the entry ramp being foldable so as not to exceed a height of the container in the transportable state; an exit ramp that rotates to a vertical position in the transportable state and functions as a second wall of the container, the entry ramp being foldable so as not to exceed a height of the container in the transportable state; a generator for autonomous operation; and an operator station for display of scan data.