77 results about "Square Window" patented technology

A constraining structure for use with a balloon catheter can include multiple longitudinal struts and multiple, sinusoidal shaped radial rings. The constraining structure can expand to form a pattern of channels including substantially square windows. The constraining structure can modify, restrict, and control a shape and/or size of the balloon when inflated. Inflating the balloon catheter within the constraining structure can provide nonuniform pressure on a vessel wall adjacent the balloon.

The invention discloses a non-local mean image denoising method combined with structure information, and the method provided by the invention is mainly used for solving the problem of pseudo image traces generated after the non-local means deonising. The non-local mean image denoising method comprises the following steps: (1) inputting an image to be denoised; (2) carrying out two-dimensional stationary wavelet transformation and inverse transformation on the image to obtain a reconstructed image; (3) extracting the structure information of the image by means of primal sketch to obtain a sideridge sketch of the image, and dividing the reconstructed image into a smooth region and a structure region; (4) forming a square window with a pixel as the center in the smooth region so as to search similar pixels, and calculating the similarity weights to re-estimate all of the pixels in the window; (5) forming a window with a pixel as a center along the structure direction of the structure region to search the similar pixels, and calculating the similarity weights to re-estimate all of the pixels in the window; and (6) combining the re-estimation results of the pixels in the smooth regionand the structure region to obtain a final denoised image. The method can be used for natural image denoising.

The invention belongs to the technical field of image processing and provides an SAR image segmentation method based on area division and a self-adaptive polynomial implicit model. The method includes the following steps: 1. using an obtaining method of an initial sketch which is based on an SAR image and includes a multiplicative speckle noise model to extract an SAR image sketch; 2. according to an area chart, dividing the SAR image into a nonstructural area and a structural area of a pixel space; 3. according to semantic information based on rule-based reasoning, dividing the structural area of the pixel space into a boundary area and a non-boundary area; 4. establishing an image segmentation method of a multilayer polynomial implicit model on the non-structural area of the pixel space; 5. proposing an image segmentation method of a single-layer polynomial implicit model, which is based on a geometric structure window and based on a square window, on the structural area of the pixel space; 6. combining the segmentation results of the different areas and obtaining a needed segmentation result. The SAR image segmentation method based on area division and the self-adaptive polynomial implicit model realizes an excellent segmentation effect of a high-resolution SAR image and is applicable to segmentation of a high-resolution SAR image.

A computer-based technique for detecting edges in gray level digital images employs fuzzy reasoning to analyze whether each pixel in an image is likely on an edge. The image is analyzed on a pixel-by-pixel basis by analyzing gradient levels of pixels in a square window surrounding the pixel being analyzed. An edge path passing through the pixel having the greatest intensity gradient is used as input to a fuzzy membership function, which employs fuzzy singletons and inference rules to assigns a new gray level value to the pixel that is related to the pixel's edginess degree.

The present invention disclosed an algorithm of Cu interconnect dummy inserting, including: divide the surface of semiconductor chip into several square windows with an area of A, each of which is non-overlap; perform a logic operation on each square window; and divide the window into two parts: ① the area to-be-inserted; ② the non-inserting area; determine the metal density of the dummy pattern that should be inserted to each square window and the line width; determine the dummy pattern that should be inserted to the windows according to the metal density, line width, the pre-set dummy pattern and the layouting rules. The beneficial effects of the present invention is: avoided the shortcomings of fill density maximization in the rule-based filling method by using reasonable metal density and line width. And with a combination of the influence of line width and density to the copper plating process and chemical mechanical polishing morphology in model-based filling method, it can achieve a better planarization effect.

The invention relates to an intelligent double-sided grinding head assembly of a vertical high-precision high-speed grinding machine. The intelligent double-sided grinding head assembly comprises a machine head sleeve, a main shaft rotating core shaft sleeve, a main shaft rotating core shaft, a V belt wheel core shaft fixing sleeve and a V belt wheel core shaft, wherein the V belt wheel core shaft is positioned on the periphery of the main shaft rotating core shaft; a square window is formed in the machine head sleeve; a screw rod nut seat which is fixedly connected with the outer wall of the main shaft rotating core shaft sleeve and penetrates through the square window is mounted at the square window; a screw rod nut and a longitudinal ball screw matched with the screw rod nut are arranged on the screw rod nut seat; and a lifting reducer and a servo motor are mounted at one end of the longitudinal ball screw. According to the intelligent double-sided grinding head assembly, a grinding head main shaft lifting driving component and a grinding head main shaft rotating driving component are mutually independent, the lifting driving component is oppositely positioned at the side part of a main shaft, and an externally arranged structure is adopted, so that the assembly, control and maintenance are more convenient, the changeability of parts is high, the entire machine cost and maintenance cost and are greatly reduced, and the service life is greatly prolonged.

The invention provides a power distribution cabinet which comprises a cabinet body, a cabinet door and a base. The cabinet door and the cabinet body are connected through a rotating shaft type movable hinge. Four supporting legs are arranged on the base and provided with four wheels. A square window is formed in the upper portion of the cabinet door and used for installing a display instrument. A circular through hole is formed in the cabinet door and used for installing a control button. A handle made of insulating material is arranged on the cabinet door and used for pushing and pulling the cabinet door. The power distribution cabinet is characterized in that the opening angle of the cabinet door is larger than 120 degrees, the position, close to the edge of the cabinet door, of the inner wall of the cabinet door is provided with an installation box, and a pressing type soft magnetic switch is arranged in the installation box. The power distribution cabinet is convenient to overhaul; due to the cooling window, heat in the power distribution cabinet can be taken away in time, an electrical device in the cabinet body is protected, and the service life of the device in the cabinet body is prolonged; large-granularity dust in air can be prevented from entering the cabinet body, and it is avoided that after dust is accumulated on the surface of the electric device, normal work of the electric device is influenced.

The invention discloses a horizontal type digital light procession (DLP) projection technology surface exposure forming device and method. The device mainly comprises a DLP projection system, a quartzglass plate, a resin liquid tank, an impeller, a printing platform, an X-direction moving system including an X-direction motor, an X-direction screw rod, and an X-direction guide rod, a Z-directionlifting system including a Z-direction motor, a Z-direction screw rod, and a Z-direction guide rod, and a politef film coated on the inner surface of quartz glass. The DLP projection system is installed on the right side surface of the resin liquid tank, and a square window is opened on the right side of the resin liquid tank and is provided with the quartz glass transmitting the ultraviolet lightsource emitted from the DLP projection system into the resin liquid tank; and the printing platform is driven by the X-direction moving system to perform left and right translation, the politef filmis installed on the quartz glass inside the resin liquid tank, the impeller is installed under the quartz glass plate inside the resin liquid tank, the Z-direction lifting system drives the X-direction moving system and the printing platform to move upwards after superposition production of a 3D model is completed, and the model is taken out. The horizontal type DLP projection technology surface exposure forming device and method can significantly reduce the forming time and effectively improve the printing quality of surface exposure rapid forming.

The invention discloses a geochemical element anisotropy spatial quantitative analysis method. The method comprises the steps of selecting any sampling point in a research region, and defining an initial square window epsilon 1Xepsilon 1 by taking the point as a geometric center; extending the height of the initial square window to define another rectangular window epsilon 2Xepsilon 2; continuingto extend the height of the initial square window to finally form a series of windows with the sizes of epsilon 1Xepsilon 1, epsilon 1Xepsilon 2, ......, epsilon 1Xepsilon i; performing calculation toobtain a continuously increased length of the rectangular window and a slope of a double logarithmic projection fitting straight line of element average concentration in the window; obtaining a rectangular window group of multiple different directions and corresponding slopes, and according to the slope of the direction with a maximum slope absolute value, estimating a singularity exponent of thesampling point; and obtaining the singularity exponent of each sampling point in the research region, performing interpolation operation in a space of the research region according to the singularityexponent of each sampling point, and performing spatial quantitative graphical representation on anisotropy of an element enrichment law according to an interpolation operation result.

The invention discloses an assembly and flame process for a trunk bulkhead deck and belongs to the technical field of ships. The process comprises the steps of inspecting and measuring the planeness comprehensively before blanking; pre-straightening and rolling profile steels, welding assemblies and the like on thin-plate grillages in advance; welding thin plates of large areas; adopting dense spot welding for installation and positioned welding of members such as stiffeners and cross beams; strictly controlling the selection of welding rods; conducting distortion correction by flame on the deck; for openings such as square windows and portholes on the deck, usually adopting a short bar-type water-and-fire correction method on peripheries of square windows, in 30-degree directions of porthole openings and in 45-degree directions of square window openings; during leveling, planishing and straightening along weld joints with wood hammers or riveting gun flat heads; finally, scribing structural lines and theoretical lines; and placing margins after deck splicing manufacturing on a hollow platform or a hollow position of the platform for cutting down, and when thin plates are stacked together, the steel plate on the upper portion can not be cut. The deck welded through the process is high in planeness, small in deformation and long in service life.

The invention discloses a rectangular waveguide radial power combiner. The rectangular waveguide radial power combiner has a broad frequency band, high efficiency and high power capacity. According tothe technical scheme, a mode converter is communicated with a power combination cavity in a disk through an S-tube double-bend circular waveguide in an S-shaped double-bend tube form from a waveguideport (4) at the bottom fixed end of the S-tube double-bend circular waveguide, and the free end of the S-tube double-bend circular waveguide is fixedly connected with a square window waveguide cavityof a cone-shaped waveguide; rectangular waveguide input ports are formed in a hollow platform of the disk, wherein the rectangular waveguide input ports are equally divided according to a circumferential angle, point to the power combination cavity and are radially distributed in an equal circular array around a center matching circular table; the mode converter converts a main TE<10> mode in a rectangular waveguide into a TM<01> mode in the S-tube double-bend circular waveguide, wherein an electric field has radial rotating characteristics in the TM01 mode; and through coupling of a main TE<10> mode in the power combination cavity and a main TE<10> mode in each radially-distributed rectangular waveguide input port channel, equiamplitude in-phase synthesis of all the input ports is completed finally.

The invention discloses an ancient poetry recitation device, and belongs to a Chinese teaching tool. The ancient poetry recitation device comprises a substrate, a motor, a fixed pulley, a belt, a baffle and a power supply, wherein the motor and the fixed pulley are respectively arranged at the left end and the right end of the back surface of the substrate; the belt is arranged between an outputting shaft of the motor and the fixed pulley and is provided with a plurality of ancient poetry cards; the substrate is provided with a square window; a rotary electromagnet is arranged below the square window; and one end of the baffle is connected with a rotary shaft of the rotary electromagnet. In an ancient poetry recitation process, a student only needs to push a switch, the rotary electromagnet can control the baffle to block or expose the ancient poetry cards, the student does not need to open or close a textbook frequently, and interest of the student on ancient poetry recitation is improved. The ancient poetry cards can pass through the square windows one by one, the student selects the ancient poetry cards conveniently, the ancient poetry recitation device has certain interestingness, and learning interest of the student is improved further.

The invention relates to an X corner point detection method applied to vision localization and calibration. The method comprises the steps of S1, collecting an image, and sampling the image by adopting annular and square windows; S2, according to image characteristics of X corner points, preliminarily judging whether sample data comprises the X corner points or not; S3, further judging whether thesample data comprises the X corner points or not, and eliminating the repeatedly judged X corner points; S4, by taking the X corner points as window centers, re-obtaining the sample data, judging whether the data meets an X corner point symmetry condition or not, and if yes, calculating out sub-pixel-level positions of the X corner points by using a curve fitting method, and setting an X corner point repeated detection mark; and S5, repeating the steps S2-S4, and detecting out all the X corner points. During image sampling, half of a window side length is subjected to interval sampling each time, so that the detection speed is increased and the X corner points are not omitted. Whether the sampling windows comprise the X corner points or not is judged based on the image characteristics ofthe X corner points, so that the robustness of an algorithm is enhanced.

The invention relates to a display box, in particular to an indoor design draft display box. The invention provides a technical scheme to realize the technical effect that design drafts can be conveniently switched according to a preset sequence, so that design drafts are prevented from shaking. According to the technical scheme, the indoor design draft display box comprises supporting legs and the like. Supporting legs are arranged on the left side and the right side of the bottom of a frame body. The upper portion of the right side face of the frame body is open, and a square window is formed below the left side face of the frame body. According to the invention, a plurality of design drafts needing to be displayed are respectively clamped into different paperboard frames. The paperboard frames are placed in the frame body. Students can see the content of design drafts clamped in the paperboard frames through the square window. After that, paperboard frames are switched through a frame switching mechanism. Therefore, different design drafts can be rapidly presented in the square window, so that teachers can be helped in teaching. The design drafts cannot be found in a busy way, and the teaching quality is improved.

The invention discloses a detachable water-stopping window installing frame comprising a metal leakage hole plate and a metal plate, wherein the metal leakage hole plate is matched with the inner wall of a square hole arranged on a wall in advance; and the metal plate is mutually connected with the metal leakage hole plate, a plurality of installing holes are uniformly arranged on the metal plate, and the middle of the metal plate is provided with a square window hole. The detachable water-stopping window installing frame has the advantages of tight combination with the wall, no phenomenon of water seepage, more convenient installation and detachment of a window and no damage to a window frame and a house in a detaching process.

The invention discloses a preparation method of an enhanced CMOS sensor light emitting diode unit structure. The preparation method comprises the following steps: P-type wafer cleaning and surface oxide layer stripping, oxide layer coating, masking, configuring a square window for an oxide layer, high energy ion beam surface treatment, Si corrosion, masking and configuring the square window for the oxide layer, N-type doping, oxide layer coating, masking and oxide layer opening, P-type doing, oxide layer corrosion, silicide barrier layer coating, masking and opening, silicide coating, annealing, removeing unreacted silicide and barrier layer, nitrided layer coating, oxide layer coating, masking and configuring a lead contact hole, metal coating, chemical mechanical grinding, oxide layer coating, masking, oxide layer corrosion and wired metal coating. According to the preparation method of the enhanced CMOS sensor light emitting diode unit structure provided by the invention, the preparation process is simple, the quantum conversion efficiency can be enhanced, and the cost can be reduced.

The invention discloses a power-closed gear testbed. The testbed comprises a driving motor, an auxiliary gearbox and a test gearbox, wherein the output end of the driving motor is connected with the auxiliary gearbox; the auxiliary gearbox is connected with the test gearbox; a first transmission shaft and a first rigid shaft are rotationally mounted in the auxiliary gearbox; gears are arranged inthe positions, located at the auxiliary gearbox, of one end of the first transmission shaft and one end of the first rigid shaft, and are in mutualtransmission cooperation. According to the power-closed gear testbed, a square window is formed in a left box body of the test gearbox, and first infrared glass is added for sealing, so that the temperature of the positions where the gears are meshed can be monitored in real time; a rectangular window is formed in the test gearbox and located above a big gear and a pinion, and second infrared glassis sealed, the running state of the gears can be observed in real time, and the temperature of gear surfaces can be monitored in real time; besides, the damage situation of the gear surfaces can be observed without box dismounting, and convenience is provided for users.

Provided is a forming device for cylindrical reconstituted bamboo lumber. A mold of the forming device is composed of an upper formwork (7), a lower formwork (25) and end covers (18). A cylindrical cavity is formed by the upper formwork (7), the lower formwork (25) and the end covers (18) in a surrounded mode. A square window with the width being D and the length being larger than or equal to L is formed in the upper formwork, guiding plates (10 and 11) are arranged on the two long sides of the square window correspondingly, the distance between the inner walls of the two guiding plates is D, an arc pressing plate (9) is arranged between the two guiding plates, and a vertical feeding channel is jointly formed by the two guiding plates and the arc pressing plate. A driving roller set (6) inclining towards the square window is mounted above the mold, and a material pressing system is composed of a motor (21), a transmission part thereof and the arc pressing plate (9). A method for producing the cylindrical reconstituted bamboo lumber includes the first step of manufacturing triangular bamboo splits, the second step of drying, gluing and re-drying, the third step of mounting special equipment, the fourth step of feeding, the fifth step of pressing, the sixth step of solidifying and the seventh step of demolding and discharging. By means of the device and method for producing the cylindrical reconstituted bamboo lumber, raw bamboo is saved, the density is low and uniform, pressure is small, stability is good, and production cost is low.

The invention relates to the field of doors and windows, in particular to a shutter and an installation and use method thereof. The shutter comprises a square window frame and a power device, whereinthe window frame comprises side frames, and rotating mechanisms are arranged laterally in the window frame. The rotating mechanisms comprise rotating shafts, the rotating shafts are fixedly connectedto clamping pieces in the axial direction, and the clamping pieces clamp the edges of blades of the shutter. A first guide rail is disposed on one of the side frames of the window frame, and the firstguide rail is provided with a rotating member including a moving end and a rotating end. The rotating end is fixedly connected to the rotating shaft, and the rotating shaft rotates with the rotatingend. The moving end is disposed in the first guide rail. The power device is used for controlling the moving end to slide up and down in the first guide rail, and the moving end enables the rotating end to rotate. By controlling the opening and closing of the blades of the shutter through the rotating mechanisms, the blades of the shutters are opened from the unilateral edge centering on the edgesof blades of the shutter, and therefore the problem that shutters existing in the prior art rotate centering on the center of the blades of the shutters resulting in poor air impermeability and difficulty in adjusting the opening angle of the blades of the shutters in the closed state is solved.

The invention relates to a profiling tool for machining parts and components of ships and method thereof. The profiling tool comprises a big raft, a tail clamping press tool, a square window clamping press tool, a small-end bottom support tool, a rear profiling plate tool, a waist supporting and clamping press tool, a front profiling plate tool and a big-end back surface supporting and clamping press tool; the big raft is fixedly connected with a local supporting tool; the tail clamping press tool is used for carrying out clamping press through a small-end surface circular hole of a machined part support; the square window clamping press tool is used for carrying out clamping press through the end surface of a small-end square window; the small-end bottom supporting tool is supported on the big raft through a circular navel in the center of the bottom of a small end; both the front profiling plate tool and the rear profiling plate tool are supported on the waist bottom surface of the machined part support; the waist supporting and clamping press tool is used for carrying out supporting and clamping press through a waist navel; the big-end back surface support clamping press tool is used for carrying out supporting and clamping press through a navel additionally arranged on the back surface of a big end. The profiling tool and the profiling tool disclosed by the invention has the beneficial effects that the production cost is reduced on the premise of ensuring the quality and the safety, the machining efficiency is improved, and precision machining of parts and components of ships is realized.

The invention relates to a device for automatically grinding and detecting a square window of a valve sleeve of a servo valve. A central spindle is installed in a main hole of a clamp body and is sleeved with the valve sleeve of the servo valve and an LVDT sensor, the upper end surface of the LVDT sensor is fixedly connected with the lower end face of the valve sleeve of the servo valve, a conversion circuit is arranged in the clamp body corresponding to the LVDT sensor, a strut is fixedly connected to the upper face of the clamp body, one end of a pressure plate is connected to the strut, andthe other end of the pressure plate is connected to the upper part of the central spindle in a sleeving manner; an M-gear type nut is screwed to the upper end of the central spindle and is connectedto the upper plane of the pressure plate, the pressure plate is fixedly connected to a motor 1, and a gear on the first motor is in meshed transmission connection with the M-gear type nut; a spring isconnected between the pressure plate and the valve sleeve of the servo valve; and one end of a grinding bar extends into the square window of the valve sleeve of the servo valve, a rack on the otherend of the grinding bar is in engaged connection with a gear on a second motor. By means of the device, the grinding precision and efficiency can be effectively improved, and a foundation is laid forsolving the bottleneck of a valve sleeve mated grinding process and realizing the mass production of an electro-hydraulic servo valve.