180 results about "Size matching" patented technology

The invention discloses a range hood with a smoke blocking screen capable of being automatically opened and closed. The range hood comprises a box body and a fan system arranged in the box body, wherein the box body comprises a panel right aligned with a cooking bench, and an air inlet is arranged on the panel. The range hood is characterized in that the smoke blocking screen in size matching with the air inlet is hinged with the upper end of the air inlet through a rotating hinge, the inner side of the panel is provided with an electric push rod driven by a motor, the extending-out part of the electric push rod is connected with the rotating hinge, and the extending-out part can do linear movement for driving the rotating hinge to rotate so that the smoke blocking screen is opened or closed. The smoke blocking screen is hinged at the upper end of the air inlet of the panel through the rotating hinge, and the electric push rod drives the rotating hinge to rotate so that the smoke blocking screen rotates to be opened or closed, and a user cannot directly face the electric push rod for driving the smoke blocking screen when operating in front of the cooking bench, so the hidden opening and closing of the smoke blocking screen is realized; and in addition, the range hood is also provided a sudden stop prevention mechanism and a position limiting pin, wherein the sudden stop prevention mechanism can prevent the hand clamping of a user caused by the sudden stop, and the position limiting pin prevents the stroke exceeding of the smoke clocking screen and realizes the position limiting effect.

The invention relates to a method for forming bonded iron-based powder by a high velocity compaction technology, and belongs to the technical field of powder metallurgy. Coarse and fine water-atomized iron powder with different particle sizes are matched, and the mass ratio of the coarse powder to the fine powder is 2:1 to 4:1. In accordance with the particle size matching requirement and the iron-based alloy composition ratio, Ni, Cu, C and iron-phosphorus alloy powder are added into the water-atomized iron powder and then are uniformly pre-mixed with the water-atomized iron powder in a planetary ball mill. 0.3 to 0.8wt. % of plasticizer is added into the pre-mixed powder and then is mixed with the pre-mixed powder for 2 to 5 hours to obtain the bonded powder. The bonded powder is heatedto 600 to 950 DEG C by using a multi-stage heating process to be subjected to plasticizing treatment to obtain plasticized iron-based powder. The plasticized iron-based powder is pressed by a high-speed forming press to obtain a high-density compac. The compact is sintered at a temperature of 1100 to 1250 DEG C in a hydrogen atmosphere for 2 to 5 hours to obtain a high-density powder metallurgy iron-based material. The method integrates the advantages of powder modification treatment, die wall lubrication and high-speed pressing, and is more suitable for preparing the high-density powder metallurgy iron-based material.

The invention discloses a lung segmenting device of a 3D (three-dimensional) U-Net network based on mixed coarse segmentation features. The lung segmenting device comprises a lung 3D binary image generating module, a lung segmenting module and an optimizing module, wherein the lung 3D binary image generating module is used for sequentially performing Gaussian filtering, binaryzation, marking of communication areas and screening, size matching and trimming on an original lung CT (computed tomography) slice so as to generate a lung 3D binary image; the lung segmenting module is used for calculating an original lung CT image and the lung 3D binary image by the trained 3D U-Net network, and outputting a segmenting probability map; the optimizing module is used for calculating the segmenting probability map by a conditional random field, and outputting the final lung segmenting result. The lung segmenting device has the advantage that while the higher segmenting accuracy is produced, the lower calculation consumption and memory consumption can be guaranteed.

The invention provides a plastic with high thermal conductivity, and the plastic is prepared from the following components in parts by weight: 100 parts of base resin, 1-60 parts of organic fibers, 5-50 parts of large-particle-size heat-conducting filler, 10-100 parts of small-particle-size heat-conducting filler and 0-2 parts of antioxidant. The preparation method of the plastic with high thermal conductivity is performed by adopting a two-step granulation method. In the invention, the thermal conduction performance of the entire system is improved by selecting crystalline resin base body and improving the thermal conductivity of the crystalline resin base body, and at the same time, less filler filling and higher thermal conductivity are achieved by filling with the inorganic filler of which the thermal conductivity is 10-1000 times higher than that of the base resin and selecting proper particle size matching.

The invention discloses an in-situ reaction method for preparing an aluminum-base composite material. The in-situ reaction method is characterized by comprising arranging at least one groove on the surface of an aluminum material to be processed, and forming a processing area; placing the aluminum material to be processed on a friction stir processing machine tool and fixing the aluminum material by a fixture; filling and compacting packing which is about to be in in-situ reaction with a matrix to generate an enforcement in the grooves, and enabling the packing to be flush with the surface of the aluminum material; and carrying out friction stirring processing for the aluminum plate for multiple times by the aid of a stirrer with the size matching with that of the processing area to obtain the aluminum-base composite material. The aluminum-base composite material prepared by the method has the advantages that sizes of in-situ generated reinforced phases are effectively reduced, and dispersion degree of the in-situ generated reinforced phases is increased.

The invention relates to a lamination forming process method for a fiber-metal mixed composite material part. The method includes the following steps that aluminum alloy plates are cut, aluminum alloy and an interlayer material are laid, a stamping die is lubricated, a lamination material is heated, stamped and preformed, a stamping lamination aluminum alloy part is stripped, and the fiber-metal mixed composite material part is thermally pressed and formed. The lamination forming process method is used for forming the fiber-metal mixed composite material part of a curvature structure, compared with the prior art, the method solves the problem that a metal layer and a fiber prepreg layer are difficult to lay in position in gradual transition of the part of the curvature structure, the defect that traditional metal plate forming matching accuracy is low is overcome, the size matching performance of the laid layers in the large-curvature positions of an R region and the like is improved, two types of defects of bridging and collapse are avoided, and the rate of finished products of a large-curvature structural piece of the fiber-metal mixed composite material part is increased.

The invention discloses a multichannel SAR-GMTI method based on target shape and shadow assistance. The ideal of the method is that multichannel self-adaptive clutter suppression and cell average-constant false alarm rate (CA-CFAR) detection are performed on M-1 SAR images after image registration and channel equalization and an original SAR image of a reference channel so that a binary image is obtained; then clustering processing is performed on the binary image so that all potential moving targets and size information and position information thereof are obtained; then shadow size matching templates corresponding to the potential moving targets are calculated according to the established moving target shadow geometric calculation model and the acquired potential moving target size information, and shadow position matching templates are generated by utilizing radial speed estimation values and the position information of the potential moving targets; and finally the two shadow templates are respectively matched according to the size information and the position information of the segmented shadow areas of the SAR images, false moving targets without matching of shadow areas are removed, and thus false alarm is reduced.

There is provided a block matching processor and method for flexibly supporting block matching motion estimation at motion vector prediction modes using matching blocks of various sizes. Each of difference unit (D-unit) arrays takes each smallest size matching block, calculates the difference between the pixels of a current frame and the pixels of a reference frame, and converts the differences to absolute values. An accumulator generates SADs (Sum of Absolute Difference) for the smallest size matching blocks and SADs for all the matching blocks of various sizes by tree-like hierarchical addition of the absolute values of the smallest size matching blocks received from the D-unit arrays.

The invention discloses a method for testing interface impervious strength of the sample bonded by sealant and base material. The method comprises: reserving a seam cavity of a certain size in the middle of the bonded base material sample, filling sealant into the seam cavity to bond the base material and the sealant into an integral body to obtain a impervious sample of the size matching the water pressure chamber; maintaining the impervious sample in the environment with temperature of 20+/-2 degrees centigrade and relative humidity of 65+/-5% for 28 days; fixing the tested cylindrical impervious sample into a steel sample jacket mould; placing upon the water pressure chamber of impervious instrument ensuring that the bonded interface of the sealant and base material is the only channel of the pressure water; increasing the water pressure of the permeability instrument at regular intervals for 0.1MPa each time from 0.1MPa until water seeps from the impervious sample surface; and determining the previous water pressure as the impervious strength of the interface of base material and sealant. The invention has simple operation, need not adding other equipments, it can test the impervious strength of various composite material structure.

The invention belongs to the technical field of image recognition, and particularly relates to a facial expression and posture bimodal fusion expression recognition method based on deep learning. Themethod comprises the following steps of establishing an image database in a natural environment, and carrying out preprocessing and enhancement processing on an obtained image; proposing an SE-GoogleNet network to carry out feature extraction on the processed data image; selecting a convolutional part of a Caffemodel of the GoogleNet model based on action classification to directly carry out knowledge migration training; and inputting the two pre-trained convolutional neural networks into an SPP layer for feature fusion, and finally sending the fused convolutional neural networks into an LSTMto realize final classification of bimodal expression recognition. According to the present invention, an LSTM model based on face and limb dual-channel feature fusion is designed, the pyramid poolingis used, and then the size matching problem during feature fusion is solved; and in combination with transfer learning, the model can realize recognition of bimodal expressions under the condition offewer databases, so that the adaptability of the model to various natural environments is improved, and the application prospect is wide.

The invention discloses a laser direct forming bright powder active adjusting coaxial powder feeding nozzle, and relates to the field of additive manufacturing, in particular to a laser direct forming bright powder active adjusting nozzle. The laser direct forming bright powder active adjusting coaxial powder feeding nozzle comprises a laser defocusing amount adjusting mechanism, a connecting sleeve and a powder defocusing amount adjusting mechanism; the laser defocusing amount adjusting mechanism is arranged on the upper portion of the inner side of the connecting sleeve, and the powder defocusing amount adjusting mechanism is arranged on the middle and the lower of the connecting sleeve. The feeding nozzle has the beneficial effects of being novel in structure, easy and convenient to machine, convenient to use, capable of achieving independent adjustment of light spots and powder spots and achieving light spot and powder spot size matching and the like; the novel laser direct forming bright powder active adjusting coaxial powder feeding nozzle integrates economy and practicability.

The invention discloses a virtual memory management method and a virtual memory management device for mass data processing, belongs to the technical field of computer system optimization and is mainly applied to one-step real-time processing of computer mass data in quantity higher than that of available physical memory. When memory allocation reaches an assigned critical value, the most suitable physical memory is found to substitute for disc virtual memory according to memory block access correlation composite index and memory allocation application size. By a memory allocation method based on size matching, a front segment of an allocation unit is allocated to an object having high requirement for memory while a rear segment is allocated to an object having low requirement for memory; thus transform matching degree of the virtual memory is increased while data movement amount is reduced. By the virtual memory management method, during allocation of mass memories which are of capacity ranging from 100KB to 10MB and of the total quantity higher than the available physical memory, Thrashing in scheduling of the virtual memory is decreased, scheduling is accurate and predictable to some degree, and system performance is improved remarkably.

The present invention belongs to the field of material screening machinery, and is one kind of multi-layer coaxial rotary sieve for screening metallurgical slag. The multi-layer coaxial rotary sieve includes a multi-layer coaxial cylindrical screen rotating around one shaft inside the outer tank, with the screen layers having gradually increased diameters and gradually decreased mesh size; an outer tank with one material inlet in the top and several material outlets corresponding to different screen layers in the bottom; spiral pushing boards inside the screen layers with size matching the diameter of the cylindrical frame separately; and screen fixing rack to connect the screen layers and to connect the spiral pushing boards. The present invention may be used in screening metallurgical slag into several grades of different sizes.

The invention discloses a rammer compactor for ground construction. The rammer compactor comprises a hollow shell. A first hollow chamber and a second hollow chamber are formed in the hollow shell. A curved rod is fixed to the positions, on the two sides of the first hollow chamber, of the hollow shell through bearings, the center of the curved rod is sleeved with a shaft sleeve, a driven gear is fixed to the position, in the second hollow chamber, of one end of the curved rod, a motor fixing shell is arranged outside the hollow shell, the motor fixing shell and the hollow shell are of an integrated structure, a motor is clamped into the motor fixing shell, and a driving gear is fixed to the position, in the second hollow chamber, of a motor spindle in the motor. The structure is compact, rotating parts are all arranged in a closed mode, and potential safety hazards are small. In addition, during transmission design of the device, the output power of the motor can be reduced through structure size matching between gears.

The invention relates to a user clothing size matching method, a user clothing size matching system and an intelligent mirror. The method includes the following steps that: the global image of a user is obtained, and a user body image is obtained according to the global image; the positions of preset body parts are extracted according to the user body image; user body parameters are calculated according to the extracted positions of the preset body parts; and user size matched with the user body parameters are obtained according to a preset database, and is outputted. With the method, system and intelligent mirror of the invention adopted, when the user wants to buy clothing, proper size can be obtained automatically through matching according to the obtained user body image, and therefore, clothing selection can be facilitated for the user, efficiency is high, the possibility of making mistakes is low, and matching conveniences can be improved.

The invention provides a method for preparing a hollow alumina ball and silicon carbide reinforced copper base composite material. A hollow alumina ball and micron-sized silicon carbide different in size are adopted as reinforcing bodies, and on the premise that the mechanical property and low expansion coefficient are ensured, the overall density of the composite material is reduced. Since alumina ceramic used in the hollow alumina ball is high strength and the hollow alumina ball has a hollow structure, the hollow alumina ball is adopted so as to reduce the density of the overall composite material to the utmost extent, moreover, the wettability of alumina and copper is poor, after silicon carbon particles are added, the compound interface activation energy can be enhanced, and therefore the mechanical property of the composite material is more excellent. Through size matching of different particles, the volume fractions of the reinforcing bodies can be improved to the maximum, the mechanical strength of the composite material is thus improved, and the toughness of copper and the rigidity of the reinforcing bodies can be optimally matched.