NUCTECH COMPANY LIMITED

The present disclosure provides a backscatter detector, including: a plurality of detector modules arranged at different positions, where ray signal channels are independent of each other, where detection region areas of at least two first detection modules among the plurality of detector modules are different from each other, and the detection region area of each of the at least two first detection modules is adapted to a respective target first count rate. The present disclosure further provides a backscatter detection apparatus.

An inspection system comprises: a radiation source; a detector configured to detect a signal when radiation emitted by the radiation source acts on the inspected object; and a processor in communication connection with the radiation source and configured to determine at least one periodic radiation combination corresponding to a type of the object according to the type of the object, select periodic radiation combinations respectively corresponding to at least two different portions of the object in the at least one periodic radiation combination, and cause the radiation source to emit radiation to the at least two corresponding different portions in selected periodic radiation combinations during the time that the object is scanned, wherein a periodic radiation combination is a chronological arrangement of at least one radiation pulse output by the radiation source in each scanning period. An inspection method is also provided.

The present disclosure relates to an inspection system and method. The inspection system includes: a ray source, configured to generate rays having different energies; a detector, configured to detect a signal when a ray emitted by the ray source acts on at least one cross section of an inspected object; and a processor, in communication connection with the ray source, configured to adjust an energy of the ray emitted by the ray source according to information representing a material parameter of at least one cross section of the inspected object. The embodiments of the present disclosure is capable of being applicable to radiation inspection of multiple types of inspected objects.

The present disclosure provides a CT imaging system and a CT detection device. The CT imaging system includes: a connecting plate, a strong supporting frame, a weak supporting frame, an emitter, a detector, an electrical component and a shielding box. The connecting plate is annular and has a rotating axis. The strong supporting frame is connected to the connecting plate on a side of the connecting plate and includes a first strong supporting frame and a second strong supporting frame distributed at an interval in a circumferential direction of the connecting plate. The weak supporting frame is connected to the connecting plate on a same side of the connecting plate as the strong supporting frame. The emitter is connected to the first strong supporting frame. The detector is connected to the second strong supporting frame. The electrical component is connected to the weak supporting frame. The shielding box is connected to at least one weak supporting frame.

A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes: a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has an entrance and an exit which are connecting to an outside; a transfer channel applicable to carry the object to move through the inspection space; a first shielding curtain and a second shielding curtain respectively mounted at the entrance and the exit; and a driving mechanism mounted on the support frame and configured to drive at least one of the first shielding curtain and the second shielding curtain to move, in response to the object getting close to or moving away from at least one of the entrance and the exit, so as to open or close the at least one of the entrance or the exit.

The present disclosure provides a ray protection device and a radiation inspection system. The ray protection device comprises: a mobile bearing device, including a vehicle frame and a traveling device supporting the vehicle frame to drive the vehicle frame to travel in a first direction; and a protection wall, arranged on the vehicle frame and including a movable wall which is movable relative to the vehicle frame. The movable wall has a shielding position and a retracting position; at the shielding position of the movable wall, the protection wall has first projection area in a vertical plane parallel to the first direction; and at the retracting position of the movable wall, the protection wall has second projection area in the vertical plane, where the first projection area is larger than the second projection area.

The CT imaging system includes: an imaging channel for placing an object to be imaged in an imaging process; M distributed X-ray sources arranged at intervals along a circumferential direction of the imaging channel, the distributed X-ray source including q target spots; N detectors arranged at intervals along the circumferential direction of the imaging channel, including first sub-detectors and second sub-detectors. The CT imaging system includes imaging components each including the distributed X-ray source and the first sub-detector. In the same imaging component, the distributed X-ray source and the first sub-detector are arranged face-to-face in a radial direction of the imaging channel, target spots of the distributed X-ray source and at least part of the first sub-detector are in a same plane perpendicular to the first direction. At least one second sub-detector is provided on at least one side of the distributed X-ray source in the first direction.

The present disclosure provides a method of identifying a material, including: detecting, in response to a radiation ray scanning a target object, a radiation ray signal using a plurality of detector modules of a radiation detector, where the plurality of detector modules are arranged at different positions and ray signal channels are independent of each other; calculating N ray indexes corresponding to a position of each of the detector modules according to the radiation ray signal detected by each of the detector modules, where N is an integer greater than or equal to 1; and identifying a material of the target object according to index values of each of the ray indexes at different positions. The present disclosure further provides an apparatus of identifying a material

The CT imaging system includes: an imaging channel; M distributed ray sources, at least one of which including q target spots; N detectors. The q target spots of the distributed ray source are arranged at intervals along a first straight line inclined relative to a first direction. The imaging method includes: placing an object to be imaged in the imaging channel; controlling q target spots of the distributed ray source to emit ray beams to form an imaging area; detecting, using the detector, a ray emitted from the distributed ray source and penetrating the object to be imaged, and generating projection data according to the detected ray; and generating a computed tomography image of the object to be imaged according to the projection data. The beam emitting time interval is determined based on an inclination angle of an extension direction of the first straight line relative to the first direction.

An inspection system and method, the system includes: a ray source rotatable between at least two scanning positions around a rotation axis, a rotation angle of the ray source between two adjacent scanning positions being greater than an angle of adjacent target spots of the ray source relative to the rotation axis; a detector assembly; and a conveying device for carrying an object. The ray source and the detector assembly are movable in a traveling direction relative to the conveying device so that the object enters an inspection region. When the ray source is at one of the scanning positions, the ray source and the detector assembly move in the traveling direction and the ray source emits X-rays; and when the ray source and the detector assembly move a predetermined distance in the traveling direction, the ray source rotates around the rotation axis to another one of the scanning positions.