32 results about "Boundary change" patented technology

The invention provides a measuring method of linear module cable force after pull cable anchoring based on magnetic flux method correction, and belongs to the technical field of civil engineering. According to the method, the second-stage or multi-stage cable force of the pull cable to be measured is recorded in the bridge cable adjustment construction; the vibration frequency of the pull cable in each order at the corresponding stress level is tested, so that the coefficient of the linear module of each order of the pull cable is recognized to determine the linear model of each order before the pull cable anchoring; the cable force value after the anchoring is recognized by the magnetic flux method; the linear module of each order before the anchor cable anchoring is corrected through the corresponding relationship between the cable force of the pull cable after the anchoring and the self vibration frequency in each order; the linear model after the cable anchoring is obtained. In the bridge operation stage, the linear module after the anchoring is used for recognizing the cable force of the pull cable to be measured. The method provided by the invention has the advantages that the high-precision cable force estimation value of the pull cable after the anchoring can be obtained; the problem that in a conventional method, the influences of the pull cable anchoring loss and the boundary change before and after the anchoring on the cable force of the pull cable cannot be accurately recognized is solved; the estimation precision of the cable force after the cable anchoring in the practical engineering is improved.

The invention relates to a method for measuring the deformation of a geotechnical sample through photogrammetry. According to the method of the invention, as for a geotechnical test for measuring thedeformation property of a soil body by using air as a medium, an industrial camera can be arranged at a certain distance from the main deformation surface of a soil sample before the test so as to record the change process of the soil sample; obtained photos are imported into image processing software; the software can extract the contour of the soil sample from the photos through color comparison, and obtain the pixel value of an area occupied by the soil sample before the change of the soil sample and the pixel value of an area occupied by the soil sample after the change of the soil sample;and therefore, the deformation amount of the boundary change of the soil sample is calculated; and the height or area of the deformed soil sample can be obtained through conversion calculation. A modern close-range photogrammetry technology is applied to a geotechnical test, and therefore, the deformation of the soil sample can be measured more accurately, and the efficiency of basic testers andthe accuracy of test data can be improved.

A video processing circuit detects a risk boundary that is a part of a boundary between a dark pixel and a bright pixel, and is determined in accordance with the tilt azimuth of liquid crystal molecules from a boundary changed over the previous frame to the current frame and, for at least one side of dark pixels and bright pixels brought into contact with the detected risk boundary, corrects a video signal designating the application voltage of a liquid crystal element corresponding to the pixel of the frame brought into contact with the risk boundary out of a plurality of frames from the current frame to k frames (here, k is a natural number) following the current frame such that a lateral direction electric field generated between the dark pixel and the bright pixel decreases.

The invention discloses a method for determining the temperature boundary of a bottom layer in soil hydrothermal coupling simulation, and relates to the technical field of water circulation in cold regions. According to the method, the influence of air temperature on the bottom soil temperature is considered, and after the soil temperature boundary changing along with time is adopted, the method can be suitable for simulating the soil temperature when the temperature of the bottom layer changes greatly along with time; The change of the bottom temperature of the calculation layer along with the temperature and the upper temperature is fully considered, and the calculation accuracy of hydrothermal coupling calculation is improved. Furthermore, soil temperature boundaries are set according to the calculation units; The method can be suitable for basin hydrological models of various scales, calculation boundaries can be specifically set according to soil temperatures of different basins of various regions, the problem that in an original hydrological model, changes of temperature boundaries of bottom layers in partitions are large can be effectively solved, and the calculation precision is improved while the parameter setting amount is reduced.

The invention provides an image processing device and an image processing method. In the device and the method, whether the feature of each pixel in a current image is in a dynamic state or a static state is judged according to a boundary change condition between the current image and a previous image, and pixel differences corresponding to pixels in the static state in the current image are added to acquire the noise intensity of the current image. In addition, the device comprises a pixel difference calculator, a boundary processing unit and a noise level processing unit, wherein the pixel difference calculator is used for calculating the pixel differences among pixels corresponding to each position on the current image and the previous image; the boundary processing unit is used for processing boundary change around each pixel in the current image; and the noise level processing unit is used for calculating to acquire the noise intensity of the current image on the basis of the boundary change judged by the boundary processing unit.

The invention provides a mosaic detection method, a mosaic detection device and electronic equipment. The method comprises the following steps: acquiring a grayscale image of a video image frame, anddividing the grayscale image into a plurality of macro blocks; calculating macro block boundary change degrees of four sides of each macro block; dividing each macro block into a two-side macro blockor a three-side macro block according to the boundary change degree of the macro block; counting the number of the divided two-side macro blocks and the number of the divided three-side macro blocks;and if the number of the three-side macro blocks is greater than a preset first number threshold and the number of the two-side macro blocks is greater than a preset second number threshold, determining the video image frame as a mosaic frame. The mosaic detection efficiency is improved, and the accuracy is improved.

A non-limit multi-function viscoelastic support structure group, relating to a field of aerospace structural design, includes a basic structure, a supported structure and multiple viscoelastic support structure units. The multiple viscoelastic support structure units form a circular discontinuous group and are arranged between the basic structure and the supported structure. The viscoelastic support structure units are connected with the basic structure and the supported structure respectively in ways of pre-pressing and surface contact, and no fixed constrained relationship exists. The present invention absorbs a vibration energy through a viscoelastic effect of own structural material and forms a spring-oscillator vibration attenuation system with the supported structure. With a geometric topology boundary change of the structure group, the supported structure is allowed to have a relative motion, thereby consuming the external vibration energy through converting into a kinetic energy of an oscillator, which effectively improves a mechanical environment of the supported structure.

The invention discloses a denoising system for ultrasonic image speckle noise. The denoising system comprises a phase field loading module, a normalization processing module, a partial differential processing module, a free energy noise reduction module, a threshold value detection module and an image display module. The denoising method comprises steps as follows: S1, ultrasonic image loading; S2, normalization processing; S3, partial differential processing; S4, free energy noise reduction; S5, threshold value detection; S6, image display. Denoising is performed according to the statistical rule of minimization of free energy, and through analysis of noise attributes, speckle noise with the average value being zero can be weakened and even counteracted through iterative computation by an established proper nonlinear partial differential equation. In a flat area, the main purpose of denoising is to eliminate scrambled speckles, and an image becomes more uniform. In a boundary area, accurate recognition is firstly made to the boundary, details are reserved, and noise and boundary change are separated in the evolution process.

The invention relates to a map zooming technique, discloses a method for rapidly loading map data, and solves the problems of slow map loading and data element overlapping in map roaming or zooming in a traditional technique. The method includes the steps: a, building a map data acquisition service interface; b, setting a map boundary change monitoring event for monitoring map boundary change conditions; c, judging whether a map boundary change is larger than a threshold value X or not, entering the step d if the map boundary change is larger than the threshold value X, and returning to the step c if not; d, calling the map data acquisition service interface to process map element data according to parameters transmitted by a calling end to obtain an element set finally meeting conditions; e, drawing the map element data in the element set finally meeting the conditions on a map. The method is applicable to map roaming or zooming.

The invention discloses a deep expansion internal combustion engine. The deep expansion internal combustion engine comprises an air cylinder piston mechanism and a volume type expansion mechanism. A combustion chamber is arranged in an air cylinder of the air cylinder piston mechanism. The air cylinder piston mechanism works in the four-stroke mode of a suction stroke, a compression stroke, an explosion acting stroke and an exhaust stroke or work in the two-stroke mode of an air inlet scavenging compression stroke and an explosion acting stroke. An exhaust port of the air cylinder piston mechanism is communicated with a working medium inlet of the boundary changing volume type expansion mechanism. The deep expansion internal combustion engine has the advantages of being simple in structure and high in efficiency.

The invention discloses an energy-multiplying energy control system, which comprises a plurality of energy controllers. Each energy controller comprises an MCU, a boosting module, a synchronization module and an isolation protective module, wherein the boosting module, the synchronization module and the isolation protective module are all connected to the outer periphery of the MCU. In the same energy controller, the isolation protective module is further electrically connected with the boosting module. The isolation protective modules in all energy controllers are electrically connected through a high-voltage pulse wire; the synchronization modules in every two adjacent energy controllers are electrically connected; the boosting module in each energy controller is grounded. The energy controllers can be flexibly increased or reduced according to requirements of onsite environments, availability for hot plug is realized, and energy of an external net boundary changes as well; when onedevice is damaged, operation of another device is unaffected, a whole boundary still has a striking effect, and accordingly boundary reliability is improved, safety experience of users is improved, and integral use cost is reduced.

The invention relates to a comprehensive energy system load safety domain evolution characteristic generation method based on a fault coupling propagation process. The method belongs to the technicalfield of comprehensive energy system safety analysis. Specific steps are as follows: firstly, the comprehensive energy system topology change under fault coupling propagation is considered; a comprehensive energy system physical topological model under the normal working condition is constructed; the topological change characteristics of the comprehensive energy system are analyzed based on the Markov process, the saddle node bifurcation evolution process of the comprehensive energy system is analyzed under the topological change, the load safety domain boundary change of the comprehensive energy system is discussed in the Markov process, and finally the load safety domain evolution characteristics of the comprehensive energy system are generated under fault coupling propagation.