31results about How to "Break through the size limit" patented technology

The invention discloses a laser additive manufacturing equipment and a laser additive manufacturing method of a metal part. The equipment comprises a working cabin, a preset powder laying rapid-forming assembly, a shape follow-up cylinder setting and removing assembly, a machining assembly, a moving mechanism and a control system. Firstly a shape follow-up cylinder slicing layer capable of surrounding the slicing contour of the metal part is arranged on the surface of a substrate by using the shape follow-up cylinder setting and removing assembly, a metal powder layer is paved on the interior of the preset powder laying rapid-forming assembly, and laser selective melting is carried out on powder, so that the formation of a first slicing layer of the metal part is completed; according to accuracy requirement, the formed slicing layer of the metal part can be machined by using the machining assembly; the process of shape follow-up cylinder slicing layer setting, powder paving, laser selective meltingand formation of the slicing layer of the metal part and machining (when necessary) is repeated, and high-precision formation of metal parts with various sizes and structures can be realized at one time; and a shape follow-up cylinder can be conveniently removed by using the shape follow-up cylinder setting and removing assembly after formation.

The invention relates to a block chain large file secure storage method and system, and the method comprises the steps: 1) registering a large file into a block chain by a block chain node user, splitting the large file by a storage system, and carrying out the redundant storage of a copy of the large file in a block chain storage network; 2) splitting the large file into N blocks, carrying out redundancy on the N blocks into K parts, and randomly storing the K parts into M storage nodes; 3) enabling the storage nodes to be a set of block chain nodes and cloud storage nodes; 4) enabling a userto encrypt the file blocks and the index records of the storage positions into the block chain blocks by using the public key; and 5) after logging in the block chain at any node, enabling the user to decrypt the file block and the storage position index by using the private key to recover the large file. According to the invention, the problems of secure storage and rapid synchronization of thelarge file in the block chain are solved, the system realizes the secure operation of safely recovering the large file by randomly switching the terminal by the user, and the limitation of the size ofthe block chain transaction file is broken through.

The invention discloses a fast Chinese pinyin input method based on a touch sensitive device and an achieving system thereof. The method includes that a marking tool is used for clicking an initial soft keyboard of a touch screen to input an initial consonant of pinyin; a system pops out a vowel suspension soft keyboard covered around an initial consonant key automatically; the marking tool is used for sliding on the vowel suspension soft keyboard for at most two key positions, and vowels of the pinyin are input; and the marking tool is lifted, and the vowel suspension soft keyboard is hidden automatically. Technical systems of six portions are combined and include (1) a suspension soft keyboard system; (2) seven suspension soft keyboards and key position layouts of the seven suspension soft keyboards; (3) a 'one-key one-pinyin' fast pinyin input method; (4) a 'one-character one-key' sentence input mode; (5) a non-switch stroke assisting technology; (6) a fast part input method. By means of the method and the system, only once key clicking is conducted, simplified pinyin and full pinyin are conducted simultaneously, and efficient inputting can be conducted without changing a pinyin scheme or initial soft keyboard setting. Simultaneously, touch screen size limit is broken through, key false identification rate is low, operation fatigue is small, and high-speed typing can be conducted even if a user does not know the pinyin.

The invention relates to a flake hydrogel material and a preparation method thereof. The flake hydrogel material is prepared from the following raw materials in percentage by total weight: 4-18 percent of polyvinyl alcohol, 0-12 percent of polyvinylpyrrolidone, 0-2 percent of polyoxyethylene, 0-3 percent of sodium alginate, 0-0.5 percent of chitosan, 0-1.5 percent of xanthan gum, 0-1.5 percent of sodium polyacrylate and 69.99-93.5 percent of water. The preparation method of the flake hydrogel material comprises the following steps: heating the raw materials, stirring the mixture to obtain a transparent sticky solution; taking out the solution, cooling, and applying the solution between two release films; refrigerating at low temperature for pre-molding; radiating by virtue of an electron accelerator for molding, cutting and filling in packages; radiating to sterilize to obtain the flake hydrogel material. The flake hydrogel material prepared by the method has high water content, biocompatibility and safety, and the thickness uniformity of the flake hydrogel material is greatly improved compared with the prior art. The preparation method is simple and feasible, has high production efficiency and low production energy consumption, and can be applied to large-scale production of hydrogel flakes.

The invention discloses large-size reinforced soil shear strength testing equipment, and a testing method. The large-size reinforced soil shear strength testing equipment comprises a control unit, a pressure loading unit and a shear box assembly; the control unit comprises an industrial computer A, a normal force motor, a horizontal force motor, a microcomputer control system, a normal force loading driving device, a horizontal force loading driving device, a normal force motor driving device and a horizontal force motor driving device; the pressure loading unit comprises a base, a slide way,a normal force loading shaft rod and a horizontal force loading shaft rod, and an outer blocking piece is arranged on the slide way; and the shearing box assembly is arranged in the outer blocking piece. In addition, the invention also provides a testing method adopting the equipment. The equipment can realize a large-size direct shear test of reinforced soil and obtain a comprehensive evaluationresult of a large-size soil sample shear strength test, has the advantages of reasonable evaluation parameters, high accuracy and high efficiency, and can meet the requirements of a multi-parameter complex test scheme.

The invention relates to a low-crosstalk large-mode-area multi-core fiber and a preparation method thereof. The low-crosstalk large-mode-area multi-core fiber is characterized by comprising a centralcore, a coating layer I surrounding the central core, a plurality of bypass cores and a coating layer II, wherein the plurality of bypass cores extend along an optical fiber axis and are arranged in aregular polygon manner; and the coating layer II covers the central core, the coating layer I and the plurality of bypass cores. Different elements are doped into a process for manufacturing the central core, the bypass cores, the coating layer I and the coating layer II, so that refractive indexes of the four parts generate a certain refractive index difference, and the refractive indexes of thefour parts are ranked from the central core to the bypass cores to the coating layer I to the coating layer II from high to low. The purpose of the design is to effectively suppress inter-core crosstalk of the central core and the bypass cores. Meanwhile, by utilizing a principle that the refractive index of the coating layer I is lower than that of the central core or the bypass cores, energy inthe central core is further prevented from leaking out, the coating layer II has the lowest refractive index and located on the outermost side of the multi-core fiber, leakage of energy of the bypasscores is suppressed, the stability of the optical fiber structure is ensured, and the transmission efficiency of light signals is increased.

The invention discloses a filling type Fresnel condenser, which comprises an incident plate and a plurality of lens threads, and is characterized in that the incident plate is made of a transparent material; the lens threads are made of a transparent material, the lens threads are attached to one surface of the incident plate, a containing space is formed between the lens threads and the incidentplate, the containing space is filled with a transparent liquid, and the transmittance of the transparent liquid is larger than 80%. According to the Fresnel condenser, the hollow containing space isformed in the lens thread and is filled with the transparent liquid, and the transparent liquid replaces a transparent material to serve as a light-transmitting medium, so that the production cost ofthe Fresnel condenser can be reduced; particularly, when the size of the Fresnel condenser is large, the manufacturing bottleneck of the large-size Fresnel condenser is solved; when the Fresnel condenser is applied to the field of solar heat utilization, the size limitation of an existing solar condenser can be broken through, and the bottleneck of large-scale application of the Fresnel condenserin the field of solar heat utilization is overcome.

The invention provides a spectral measurement device and method, and belongs to the field of spectral measurement. The device comprises a super-lens dispersion system, a microscopic system, a detector and a computer processing system; the optical axis of the super-lens dispersion system is parallel to incident light; the optical axis of the microscopic system is perpendicular to the optical axis of the super-lens dispersion system; the object space focus of the microscopic system is located on the optical axis of the super-lens dispersion system; the microscopic system, the detector and the computer processing system are sequentially connected, and the detector is located on an image space focal plane of the microscopic system. According to the spectral measurement device, the L-shaped super lens dispersion system and the microscopic system are utilized, the limitation of a large-angle dispersion system on the size of a detector is broken through, and the precision of a spectrograph is improved.

The invention discloses a high-density trench device structure and a manufacturing method thereof, and belongs to the field of power semiconductors. According to the high-density trench device structure, an isolation layer sinks into a trench, the whole trench device structure serves as a source region electrode layer, the etching of a source electrode contact hole is not needed, and the whole structure is simplified compared with a traditional trench MOSFET structure; the layout mode that first conductive type source regions and second conductive type source regions are arranged at intervalsin a Y-axis direction is adopted, and the limitation of distribution of the first conductive type source regions and the second conductive type source regions in a transverse direction on the size ofa cellular region is broken through. With the manufacturing method of the high-density groove device structure adopted, the production and manufacturing of an ultra-high-density groove MOSFET with thecell density of 0.5 micrometer or below can be conducted, the cell density is improved by three times or above, and the characteristic on resistance of the device can be reduced by 20% or above on the whole.

The invention relates to the technical field of gene detection, in particular to a fluorescence in-situ hybridization probe set for detecting BCR/ABL genes and application of the fluorescence in-situ hybridization probe set. According to the invention, in a non-repetitive region of the BCR/ABL gene, on the basis of using as few probes as possible, the probe resolution is increased, a PCR (Polymerase Chain Reaction) doping method is also adopted in the preparation process to ensure that the product contains more fluorophores, and when the probe group is used for detecting the BCR/ABL gene, the cost is relatively low, and the hybridization of the probes can be completed in about 30 minutes.

The invention relates to a packaging structure and a packaging method of an optical fiber Fabry-Perot sensor for temperature measurement of a nuclear facility, and belongs to the technical field of optical fiber sensing. The structure comprises a single-mode optical fiber, an adiabatic guide column, a flange base, a capillary steel pipe, a stainless steel armored pipe, and an optical fiber Fabry-Perot sensor. The method comprises the following steps of: fabricating the optical fiber Fabry-Perot sensor on the top of the single-mode optical fiber; penetrating the optical fiber into the single-end sealed capillary steel pipe, and bonding and fixing the optical fiber with a high-temperature adhesive; penetrating the capillary steel pipe into the stainless steel armored pipe with an inner diameter of 0.5 mm, and exposing a sensing part to the outside of the stainless steel armored pipe about 2 to 3 mm; separately inserting the adiabatic guide column and the stainless steel armored pipe intothe flange base from two ends; welding and sealing the joint of the capillary steel pipe and the stainless steel armored pipe, and the joint of the stainless steel armored pipe and the base; and carrying out annealing treatment on the entire sensor. According to the packaging structure and the packaging method, the size limitation of a thermocouple sensor on the packaging structure is broken, anda sensing method with a high-speed temperature response is provided for the temperature measurement of the nuclear facility.