5results about How to "The simulation effect is accurate" patented technology

The invention discloses a simulation experiment device for migration and transformation of pollutants in water and soil media and an evaluation method, and relates to the field of pollutant migration and pollution remediation in environmental media such as natural resources and ecological environments, and the simulation experiment device can independently simulate one scene for simulation and can also perform combined simulation on multiple scenes. The simulation scene is closer to the real condition, the water and soil environment medium condition is simulated more truly, especially, design is carried out for a large number of dominant channels and lenticules existing in the stratum, the simulation effect is more scientific and accurate, trace indexes are introduced according to the pollutant property, a pollutant migration evaluation model is established, and the method has the advantages of being high in practicability and easy to popularize. Therefore, the aim of scientifically and comprehensively evaluating the influence of the pollutants on the environmental medium is achieved, the pollutant migration evaluation method can effectively evaluate the pollutant migration path and the potential pollution area, the pollution range can be more scientifically described, and the evaluation method can provide effective theoretical support for pollution investigation and restoration.

A spatial image simulation method includes the following steps: constructing a DMD-based optical system simulation model; uniformly sampling the angle and intensity of illumination light within the illumination numerical aperture, and selecting a simulation area; for each illumination angle, simulating the complex amplitude distribution of the micromirror in the open state and the complex amplitude distribution of the micromirror in the closed state; obtaining the interference data of the micromirror at the entrance pupil plane for each illumination angle; obtaining the spatial frequency spectrum at the exit pupil plane for each illumination angle; simulating the corresponding light intensity distribution based on the complex amplitude distribution for each illumination angle, and superimposing the light intensities corresponding to all illumination samples to obtain the final light spot result. Based on the actual working scenario of the DMD, and considering that the tilt angle of the DMD micromirrors has a significant impact on its diffraction, the introduction of various tilt-induced phase differences and tilt factors results in more accurate simulation effects.

The invention relates to the technical field of electric vehicle disc brake detection, in particular to environment simulation equipment applied to electric vehicle disc brake detection, which comprises a main frame, a longitudinal mounting disc is fixedly mounted on the side wall of the main frame, and an electric control simulation seat for mounting a brake disc is movably assembled on the side wall of the longitudinal mounting disc. According to the environment simulation equipment applied to electric vehicle disc brake detection, a simulation mode that a single brake disc is combined with multiple brake pads is adopted, the brake pads can be replaced under the condition that the normal simulation condition is not affected, and the replacement efficiency is greatly improved; by simulating different weather states in the driving process, the use states of the disc brake in different road conditions can be truly detected, and the simulation effect is more real and accurate; the temperature and humidity of the surface of the brake disc are detected at a short distance, and meanwhile, the state of the surface of the brake pad can be optically detected, so that the detection range is enriched, and the detection effect is improved.

The utility model belongs to the field of biomedical models, and provides a device for simulating adjustment of a ciliary body to a crystalline lens, which comprises a driving component for providing power drive, a ciliary body model component for simulating the function of the ciliary body and a crystalline lens model component for simulating the function of the crystalline lens, the driving assembly comprises a positioning disc arranged on the outer side of the crystalline lens model component in a sleeving mode, the ciliary body model component comprises a plurality of ciliary processes which are arranged on the outer side of the crystalline lens model component in a surrounding mode and can move in the radial direction of the positioning disc, and a plurality of small ciliary belts are arranged between the ciliary processes and the crystalline lens model component; the driving assembly, the ciliary body model component, the crystalline lens model component and the ciliary ribbons are used in cooperation, it is guaranteed that a plurality of ciliary processes can move synchronously through the synchronous structure, the working process of the ciliary body in the physiological state is highly restored, the simulation degree of the model is remarkably improved, and the simulation degree of the ciliary body model is improved. And a more real and accurate simulation effect is provided for teaching.

The invention discloses a universal imaging physically-driven CT data simulation and CT image noise artifact suppression method. According to the method, pixel values of bones, fat, muscles and air in a real CT image and a real CBCT image are calculated respectively, a mapping function is constructed, pixel values of tissues in the CT image are mapped into pixel values of corresponding parts in the real CBCT image, and simulated CBCT data are obtained. The method comprises the following steps: firstly, simulating CBCT data, then obtaining the projection of the simulated CBCT data by using an orthographic projection function, simulating the projection data of low-dose CBCT through a mode of sparse sampling angle and addition of projection domain noise, and then reconstructing the projection domain data through an FDK function, so as to obtain paired simulated CBCT data capable of supporting supervised learning in such a universal imaging physical driving mode. Test results show that the method has good results in the aspects of reducing artifacts, suppressing noise and recovering image details in the aspects of simulating data and real data.