9 results about "Radiation attenuation" patented technology

The present application relates to the technical field of radiation protection barrier production, and particularly relates to a vehicle-mounted radiation protection barrier online evaluation method and system for physical examination, which obtains process parameter information of a workpiece to be evaluated, obtains specification parameters of the workpiece to be evaluated based on the process parameter information, constructs a simulated three-dimensional model diagram of the workpiece to be evaluated if the actual radiation attenuation rate value is not greater than the preset radiation attenuation rate threshold, and preforms a crack sample model diagram, obtains a screened three-dimensional model diagram based on the simulated three-dimensional model diagram and the crack sample model diagram, obtains crack characteristic information in the screened three-dimensional model diagram, evaluates the workpiece to be evaluated based on the crack characteristic information, and obtains a first evaluation result or a second evaluation result. The present application can obtain the best repair scheme of unqualified semi-finished lead plates, so as to repair the semi-finished lead plates and reduce the scrap cost.

The present disclosure relates to a distributed photovoltaic short-term power generation power prediction method, system, device and medium, belonging to the technical field of photovoltaic power prediction, the distributed photovoltaic short-term power generation power prediction method, by acquiring continuous multiple frame satellite cloud picture sequence, identifying and matching independent cloud layer target, calculating its moving direction vector angle, generating the moving trajectory line of each cloud layer based on the moving direction vector angle, by from the generated cloud layer obscuration time sequence, the thickness parameter value of each cloud layer is parsed out, and the corresponding solar radiation attenuation coefficient is further obtained, while accurately analyzing the coverage area percentage and coverage duration of the cloud layer above the power station, by accurately depicting the dynamic characteristics of the cloud layer and its influence on the solar radiation, the prediction accuracy of the distributed photovoltaic short-term power generation power is significantly improved, which can provide reliable data support for power station operation scheduling, power grid power balance and energy optimization configuration.

The utility model discloses a desktop type industrial CT is with protection shell, including upper casing, the lower casing of being located in the bottom of upper casing and the top cover of being located in the top of upper casing, the rear side of upper casing is equipped with a plurality of through grooves, and one side of through groove is equipped with heat dissipation subassembly, heat dissipation subassembly includes the heat dissipation plate of being fixed on upper casing, a plurality of heat dissipation channels that are located in the heat dissipation plate inside, the mounting frame of being fixed on heat dissipation plate and the fan of being fixed on mounting frame, and heat dissipation channel is equipped with the lead layer on the inner wall and is communicated with through groove, and the one side of heat dissipation plate is equipped with shielding assembly close to mounting frame. Through above -mentioned structure, the through groove on upper casing is communicated with the multi -bending heat dissipation channel inside heat dissipation plate, and the fan of installation is used for forced convection heat dissipation, realizes the heat dissipation of shell inside, and the inner wall of heat dissipation channel is plated lead, and adopts the multi -bending structure and forms the radiation attenuation path, and the radiation dose is reduced through multiple turns, and the heat dissipation performance is optimized while guaranteeing the radiation safety.

A radiation attenuating shield apparatus and associated systems, devices, and methods are disclosed herein. In some embodiments, a radiation attenuating shield apparatus includes a first radiation shield panel and a second radiation shield panel, both of which are composed of a material that at least partially blocks radiation. The radiation attenuating shield apparatus is configurable between (i) a collapsed configuration in which the second panel substantially overlaps with the first panel to define a first radiation blocking footprint, and (ii) an expanded configuration in which less of the second panel overlaps with the first panel to define a second radiation blocking footprint that is greater than the first radiation blocking footprint.

This application provides an intelligent control method and system for radiation protection in interventional radiology nursing. It acquires radiation field information of the interventional surgical area and the spatial coordinates of the interventional surgical instruments, and determines the scattering hotspots during the operation of the instruments. Spatial constraints are constructed based on the orientational relationship of the scattering hotspots relative to a preset interventional radiology buffer area. Within the reachable working space of the protective shield robotic arm, an allowable pose set satisfying the spatial constraints is calculated. An optimization solution is then performed within the allowable pose set, using the radiation attenuation function of the protective shield combined with the scattering hotspots, to maximize the radiation shielding effectiveness, thus obtaining the target position reached by the protective shield robotic arm. The target position is corrected based on the unobstructed status monitoring results of the interventional radiology buffer area until the protective shield robotic arm reaches the target shielding position. The technical solution provided by this application can achieve radiation protection in interventional radiology nursing under the spatial constraints of the interventional radiology buffer area.

This disclosure belongs to the field of laser-induced breakdown spectroscopy technology, specifically relating to a laser-induced breakdown spectral correction method and system based on energy level radiation attenuation. The method includes: acquiring the temporal resolution spectrum of a calibration sample; determining a correction spectral line of the calibration sample based on the acquired temporal resolution spectrum; calculating the energy level radiation attenuation coefficient of the selected correction spectral line based on its temporal resolution spectral line intensity; and correcting the spectral line intensity of the acquired temporal resolution spectrum of the calibration sample based on the obtained energy level radiation attenuation coefficient of the calibration sample's correction spectral line, thereby completing the laser-induced breakdown spectral correction. This embodiment calculates the energy level radiation attenuation rate, correcting the repeatability problems caused by the uncertainty of the energy level radiation attenuation rate within the laser-induced plasma and the uncertainty of radiation attenuation within the integration time, thus improving measurement accuracy.

The application provides a kind of nuclear radiation field fast inversion method and system, it is related to nuclear radiation field inversion technical field, and the three-dimensional space model of target nuclear radiation field is constructed and the energy spectrum data of multiple observation positions are obtained in the present application, standard count rate data set is generated after pre-processing;Then by the discrete processing of radiation field, the initial radiation intensity is obtained based on the data between each potential point source and observation position;Further, for any target point, the relative contribution weight of each potential point source and the radiation attenuation factor are aggregated, the field intensity response factor of target point under multiple energy channels is calculated and the field intensity response vector is formed;Finally, the energy fluence mapping model with field intensity response vector as input and energy fluence as output is constructed and trained, the fast and high-precision inversion of energy fluence at any position of nuclear radiation field is realized, and the efficiency and accuracy of multi-energy channel nuclear radiation field inversion in complex medium environment are effectively improved.

A radiation attenuating shield apparatus and associated systems, devices, and methods are disclosed herein. In some embodiments, a radiation attenuating shield apparatus includes a first radiation shield panel and a second radiation shield panel, both of which are composed of a material that at least partially blocks radiation. The radiation attenuating shield apparatus is configurable between (i) a collapsed configuration in which the second panel substantially overlaps with the first panel to define a first radiation blocking footprint, and (ii) an expanded configuration in which less of the second panel overlaps with the first panel to define a second radiation blocking footprint that is greater than the first radiation blocking footprint.