Tsinghua University

The present disclosure provides a data acquisition method and system for static computed tomography, and a CT device. The data acquisition method includes: sending (S01) a scan control system instruction to a master controller; parsing (S02) the scan control system instruction to generate an internal control instruction; sending (S03) the internal control instruction to a plurality of acquisition controllers; and controlling (S04) a plurality of detectors to perform data acquisition according to the internal control instruction.

A battery cell detection system and a method of detecting the same is provided by the embodiments of the present disclosure. The battery cell detection system includes: a loading device (10), a first detection device (20), a second detection device (30), a sorting device (40) and an unloading device (50) arranged in sequence in a conveying direction. The loading device (10) is configured to transport a tray carrying a battery cell (600) to the first detection device (20). The first detection device (20) is configured to detect the battery cell (600) and generate a first detection sub-result. The second detection device (30) is configured to detect the battery cell (600) and generate a second detection sub-result. The sorting device (40) is configured to sort an abnormal battery cell (600) to a first target region. The unloading device (50) is configured to transport a normal battery cell (600) to a second target region. In the battery cell detection system, an automatic operation of a whole detection task of loading, detection, sorting and unloading may be realized through a collaborative cooperation of various devices, which may effectively improve a detection efficiency and a detection accuracy of the battery cell detection system.

Embodiments of the present disclosure provide a CT imaging system, which relates to the field of ray scanning technologies. 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, at least one distributed X-ray source including q target spots; N detectors arranged at intervals along the circumferential direction of the imaging channel, including a first sub-detector and a second sub-detector. The CT imaging system includes a plurality of imaging components, the imaging component includes at least one distributed X-ray source and at least one 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 a part of the first sub-detector are located in a same plane perpendicular to the first direction. At least one second sub-detector is provided on at least one side of at least one distributed X-ray source in the first direction.

Embodiments of the present disclosure provide an imaging method for a CT imaging system, which relates to the field of ray scanning technologies. 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 at least one 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 at least one distributed ray source to emit ray beams to form an imaging area; detecting, using at least one detector, a ray emitted from at least one 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.

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 (521, 1121) of a radiation detector, where the plurality of detector modules (521, 1121) 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 (521, 1121) according to the radiation ray signal detected by each of the detector modules (521, 1121), 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 apparatus is particularly adapted to detect backscattering rays.

The present disclosure provides a backscatter detector, including: a plurality of detector modules (521, 1121) 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 (521, 1121) 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.

A conveying device is provided, including: a conveying mechanism (1), which includes a mounting frame (11), a driving roller (12), a driven roller (13) and a conveyor belt (14), in which the driving roller (12) and the driven roller (13) are rotatably mounted on the mounting frame, and the conveyor belt (14) is fitted over the driving roller (12) and the driven roller (13), and configured to convey a to-be-detected object (7); a driving mechanism (2) connected with the driving roller (12) and configured to drive the driving roller (12) to rotate; a sensor unit configured to sense a first position information and a second position information of the to-be-detected object (7) on the conveyor belt (14); and a control unit (9) communicatively connected with both the sensor unit and the driving mechanism (2), and configured to control the driving mechanism (2) to be in a first state or a second state based on the first position information or the second position information. The driving mechanism (2), when in the first state, the conveyor belt (14) conveys the to-be-detected object (7); and when in the second state, the conveyor belt (14) is in a stationary state.

A method for designing and planning a low-carbon energy system based on source-grid-load-storage-hydrogen-chemical includes obtaining (S1) user natural language information; constructing (S2) a large model for planning the low-carbon energy system; the large model includes a large language model and a planning module; identifying (S3) a user intention by inputting the user natural language information into the large language model, and invoking the planning module based on the user intention identified; converting (S4) the user natural language information into a preset format of input data and inputting the preset format of input data into the planning module, and outputting a planning report by optimization solving of the planning module; displaying a planning result corresponding to the planning report by the large language model.

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