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116results about How to "Guaranteed Fusion" patented technology

GaAs-based LED chip cutting method

The invention discloses a GaAs-based LED chip cutting method. The method comprises the following steps: (1) semi-cutting is carried out on a P surface, criss-cross cutting grooves are formed, and chip P surface electrodes are separated at equal intervals; (2) the chip P electrodes face a white film downwardly, N electrodes face upwardly and are attached to the white film; (3) chip N surface scribing is carried out along the cutting grooves formed by P surface semi-cutting, and chip N surface stress is relieved; (4) film inverting is carried out on the scribed chip, and the chip is transferred to a blue film from the white film; and (5) on the chip N surface, a bonding tool of a chip breaking machine is used for chip breaking along scratches, and the chip is processed into independent crystal grains. The improved surface mount method is used, a cutting method which combines advantages of a chip sawing machine and a laser chip scribing machine is adopted, the chip P surface stress and the N surface stress are relieved maximally, deformation stress effects caused by film laminating can be reduced and edge collapse and pipe core breaking phenomena after the chip is cut are reduced, and the appearance quality after the chip is cut is improved.
Owner:SHANDONG INSPUR HUAGUANG OPTOELECTRONICS

Autonomous navigation guidance method used for pilotless plane

The invention discloses an autonomous navigation guidance method used for a pilotless plane, which comprises a fairway planning method based on a speed vector field and a track tracking guidance method based on nonlinear navigation logic guidance law. The fairway planning method is characterized in that the flying area of a pilotless plane is regarded as the area of a speed field; a hauling field is generated at a target point in the area and generates the hauling speed on a planning point; an evasion field and a guide field are generated in a threat area and generates evasion speed and guide speed on the planning point; under the action of planning resultant speed, the movement track of the planning point is a fairway to be planned. The track tracking method is characterized in that a nonlinear navigation logic guidance command is given according to a given track by combining with the current position, the attitude information and the detection step length of the pilotless plane; a nonlinear guidance command is converted into a roll angle command by the conversion relation between accelerated speed and a roll angle; and the track tracking is realized by a flight control system. The invention has simple realization and good real-time performance and has very strong practical application prospect.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Multichannel LSTM neural network influenza epidemic situation prediction method based on attention mechanism

The invention provides a multichannel LSTM (Long-short term memory) neural network influenza epidemic situation prediction method based on an attention mechanism, and belongs to the technical field ofepidemic disease monitoring. The multichannel LSTM neural network influenza epidemic situation prediction method comprises the following steps: firstly, carrying out preprocessing, normalization andfeature selection on data in a data set, dividing the selected data into weather-related data and influenza epidemic situation-related data, and generating a training set; then establishing a multichannel LSTM neural network model comprising an attention mechanism; inputting training set data into the model for training, and performing MAPE (mean absolute percentage) evaluation to obtain a trainedmultichannel LSTM neural network model; processing the test data to obtain a test set; inputting the test set data into the trained LSTM neural network model for testing; and finally, performing inverse standardization processing on a test output result to obtain an influenza epidemic situation prediction value. According to the multichannel LSTM neural network influenza epidemic situation prediction method based on an attention mechanism, the problem of low prediction accuracy of the existing influenza epidemic situation prediction technology is solved. The multichannel LSTM neural network influenza epidemic situation prediction method based on an attention mechanism can be used for influenza prediction of different regions.
Owner:DONGGUAN UNIV OF TECH

High-resolution roll angle measuring method and device based on heterodyne interferometric phase method

The invention discloses a high-resolution roll angle measuring method and device based on a heterodyne interferometric phase method. The device comprises a transverse Zeeman double-frequency laser and a beam splitter prism in an emergent light path of the transverse Zeeman double-frequency laser, and a first polarization analyzer and a first photoelectric receiver are arranged in a reflection light path of the beam splitter prism. A half-wave plate is arranged in a transmission light path of the beam splitter prism and is located in the middle of a plane mirror array, a phase delay sheet and a right-angle reflecting prism are arranged in a final emergent light path of the half-wave plate, and a second polarization analyzer and a second photoelectric receiver are arranged in a reflection light path of the right-angle reflecting prism. The first photoelectric receiver and the second photoelectric receiver are connected with a phase meter, and the output end of the phase meter is connected with an industrial personal computer. The superposition performance of acting on the polarized light is utilized when the half-wave plate and the plane mirror array are matched to be used, the half-wave plate is mounted in the plane mirror array and is used in common with the phase delay sheet, and roll angle measuring resolution is further improved.
Owner:XI AN JIAOTONG UNIV

Photo-thermal composite curing 3D printing device and hook face in-situ printing method thereof

The invention discloses a photo-thermal composite curing 3D printing device and a hook face in-situ printing method thereof. The photo-thermal composite curing 3D printing device is composed of two sprayer systems, a three-dimensional motion platform, two feeding devices and a computer. Furthermore, the two sprayer systems include a photo-curing forming sprayer system and a temperature curing forming sprayer system, and collaborative printing of two forming technologies can be achieved. A hook face in the hook face in-situ printing method refers to printing on the hook face through a hook face layering method different from a traditional 3D printing plane layering method, and in-situ printing refers to direct printing at the artificial limb hook face defect position. A defect three-dimensional model is established by scanning the artificial limb hook face defect, a printing path is generated according to the size and shape of the defect, accordingly, sprayers are controlled to conduct three-axis linkage, the sprayers move along the defect face, and in-situ printing is finished. Furthermore, the device and method can be used for studying in the aspect of a hook face in-situ printing type skin structure and a cartilage-like structure.
Owner:XI AN JIAOTONG UNIV

6LoWPAN-based intelligent fire-fighting service system for colleges and universities and design method

The invention discloses a 6LoWPAN-based intelligent fire-fighting service system for colleges and universities and a design method of the 6LoWPAN-based intelligent fire-fighting service system. The service system comprises a data acquisition layer, a data transmission layer, a data control layer and a system application layer, good interoperability of the 6LoWPAN can solve information isolation, the 6LoWPAN supports the intercommunication with other IEEE (Institute of Electrical and Electronic Engineers) 802.15. 4 equipment and supports the interconnection with other IP networks; through designing a data control layer based on fire-fighting big data, intelligentized analysis of data, intelligent control on fire-fighting equipment, a visual service platform is established; through analyzingand mining fire-fighting big data, the fire situation is predicted and a solution is formulated, the fire prevention and control efficiency is improved, the intelligence of a service platform is realized, the purposes of equipment management centralization, fire-fighting construction underlying data management intellectualization and management system platformization are achieved, and the systemhas the characteristics of high feasibility, convenience in networking and easiness in maintenance and upgrading.
Owner:CENT SOUTH UNIV +1

Low delay ignition confirmation system and confirmation method applied to rocket ground information fusion

In a low delay ignition confirmation system and confirmation method applied to rocket ground information infusion, a comprehensive detection and control apparatus of a ground test launch control system receives an initial ignition signal sent by a central display and control station; after ladder diagram and logical calculation and signal conditioning, a timing system zero point signal is output; a flight control computer determines whether each one-chip microcomputers on the rocket work normally according to time synchronization after receiving the timing system zero point signal; a flight control procedure is started upon normal work and a determining result is fed back to a central computer; the flight control procedure is stopped upon abnormal work and a determining result is fed back to the central computer and ground post processing is expected; the central computer receives the rocket results; for the normal work signal, an intermediate ignition signal is output to the comprehensive detection and control apparatus; a final ignition signal is output by the comprehensive detection and control apparatus after receiving the intermediate ignition signal; and an initiating explosive device is detonated by a second launch control conditioning plate, so the rocket and the ground are reliably separated.
Owner:BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1

Method of double filum narrow interstice alternating-direct current pulse matching electric arc welding

InactiveCN101161393AEasy to integrateSolve the traditional problems of poor integrationArc welding apparatusAlternating currentControl theory
The present invention relates to a narrow gap welding method which belongs to the technique field of the welding technology. A double-thread narrow gap alternating-direct current pulse matching electric arc welding method comprises the following procedures: connecting equipment and regulating the parameter of the alternating current welding machine; connecting the control end of the double-thread alternating-current/direct current welding controller with the scheduled end of the potentiometer of the direct-current welding machine; setting the base electric voltage of the direct current impulse and setting the spike voltage of the direct current impulse; setting the wire feeding rate of the two welding sticks and the range is between 1 and 15m/min; connecting the detecting end of the controller with the alternating current welding machine and the voltage signal is obtained; treating the voltage signal with the detecting module to detecting signal and inputting the control module; generating the direct current impulse controlling signal and outputting to the control end by the calculating of the control module; regulating the controller mode to cause that the controller runs at the impulse outputting mode and outputting the impulse signal required by the designing; and doing welding. The invention guarantees the lateral wall fusing and increases the reliability of the welding equipment and facilitates the maintenance by the acting force between the two electrical arcs.
Owner:TIANJIN UNIV

Narrow-gap laser-TIG electric arc composite welding device and welding method

The invention provides a narrow-gap laser-TIG electric arc composite welding device and a welding method. The welding device comprises a welding gun body, a swing welding gun assembly, a welding wire feeding and heating assembly and an air feeding assembly, wherein the swing welding gun assembly comprises a welding gun rotating shaft, a stepping motor, a large gear, a pinion, an upper insulation sleeve, a lower insulation sleeve, a tungsten electrode clamp and a tungsten electrode; the stepping motor is installed on a motor connecting base; the pinion is installed on an output shaft of the stepping motor; the large gear is installed on the welding gun rotating shaft; the pinion is meshed with the large gear; the welding gun rotating shaft is installed and positioned on the welding gun body through the upper insulation sleeve and the lower insulation sleeve; the tungsten electrode is installed at the tail end of the welding gun rotating shaft through the tungsten electrode clamp; the welding wire feeding and heating assembly is used for feeding and heating wires; the welding arc and the focus point of the laser beam jointly act on the same welding pool area; and the air feeding assembly conveys a welding protection gas to a welding arc area. The product quality and the welding efficiency are improved, the welding cost is reduced, the welding deformation is reduced, and the weld width is accurately controlled.
Owner:HARBIN WELDING INST LTD

PVC floor and production process

InactiveCN109929194ATo achieve the effect of luminous guidance instructions at nightAchieve the effect of luminous guidance indicationCoatingsFlooringMolten statePolyvinyl chloride
The invention relates to the field of decorative building materials, in particular to a PVC floor and a production process. By designing the corresponding raw material ratio and the corresponding process, the PVC floor can change correspondingly according to the temperature and the brightness of the environment. The PVC floor comprises the following components in percentage by mass: 20-80% of a polyvinyl chloride matrix, 20-80% of stone powder and 1-50% of an auxiliary agent, and 0.01-40% of an inductive color-changing material. The method sequentially comprises the following steps of measuredfeeding, hot mixing, cold mixing, double-screw extrusion, single-screw extrusive granulation, particle spreading, initial forming and UV surface treatment. According to the invention, the PVC floor material and the induction color-changing and light-emitting material can be fused with each other in a hot melting state at a proper temperature under a proper process condition; in addition, under the condition that the PVC floor material and the inductive color-changing and light-emitting material are in a mutually fused state, the independence performance of the PVC floor and the performance ofthe inductive color-changing and light-emitting material can be achieved.
Owner:北新弹性地板有限公司

Method for automatically welding double wires through vertical-position fillet welding

The invention relates to the technical field of shipbuilding, in particular to a method for automatically welding double wires through vertical-position fillet welding. The method is mainly applied to welding through a vertical-position fillet welding joint in the shipbuilding industry (and other steel structure industries), and the middle plate thickness range and the assembly clearance of the vertical-position fillet welding joint reach 10-20 mm and 0-5 mm correspondingly. In the welding process, one vertical-position fillet weld is welded by adopting two welding guns simultaneously; the two welding guns are arranged in an upper-lower manner; the upper welding gun is responsible for backing welding, thereby guaranteeing the fusion of weld base points; the lower welding gun is responsible for swing and cosmetic welding, thereby guaranteeing the weld size and the good formation; and accordingly, a ship-structure vertical-position fillet weld of which the welding foot size is 10-14 mm can be welded efficiently and automatically, the man-hours for welding and grinding of the vertical-position fillet weld in the shipbuilding process as well as the labor intensity can be effectively reduced; and the welding efficiency and quality of the vertical-position fillet weld can be improved.
Owner:GUANGZHOU SHIPYARD INTERNATIONAL LTD

Bionic contour detection method based on color and gray feature fusion

The invention aims at providing a bionic contour detection method based on color and gray feature fusion. The bionic contour detection method comprises the following steps of: A, inputting a to-be-detected image, carrying out the calculation of color features, extracting color components in the to-be-detected image, and carrying out filtering to obtain a filtering response value of each color component; B, calculating single antagonism response based on color features of each pixel point; C, calculating a color feature contour response value and a color feature optimal direction of each pixelpoint; D, performing gray processing on the to-be-detected image, and calculating gray features, namely, calculating a gray feature initial response value of each pixel point; E, calculating a classical optimal response value and an optimal gray feature direction of the gray feature of each pixel point; F, calculating a gray feature contour response value of each pixel point; G, calculating a final contour response value of each pixel point; H, and calculating a final contour value of each pixel point. The bionic contour detection method overcomes the defects in the prior art, and has the advantages of comprehensive operation feature and high contour recognition rate.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Caustic soda recycling device for chemical machinery

InactiveCN109173941AExpand the scope of joiningAdd control goodAlkali metal hydroxidesChemical/physical processesChemical reactionRaw material
The invention discloses a caustic soda recycling device for chemical machinery. The caustic soda recycling device comprises a first tank body and a second tank body, wherein a feed pipe is arranged inside the first tank body; another feed pipe is fixed above the feed pipe; an auxiliary material pipe penetrates through the inner wall of the left side of the first tank body; a heating ring is arranged at the bottom of the interior of the first tank body, and a through pipe penetrates through the lower side of the right wall of the first tank body; a valve is arranged on the outer side of the through pipe; a partition plate is fixed on the inner wall of the second tank body; and the second tank body is positioned on the right side of the through pipe. According to the caustic soda recycling device for chemical machinery, due to the arrangement of the feed pipe, raw materials containing caustic soda can be smoothly added into the first tank body, and the materials are uniformly dispersed due to an inclined plate and a semicircular mesh arranged in the feed pipe, so that the materials are scattered; chemical reaction additives are introduced into the auxiliary material pipe and are usedfor reducing and purifying the caustic soda; and due to the arrangement of a first ring pipe, a second ring pipe and a third ring pipe, the addition range area of the additives is enlarged.
Owner:戴聪聪

Multifunctional absorbable artificial lamina

The invention discloses a multifunctional absorbable artificial lamina comprising a lamina body. The lamina body is composed of a base body, an outer fixing piece and an inner fixing piece. The base body is of an arched structure, and the outer fixing piece and the inner fixing piece are arranged on two sides of the base body respectively. Autogenous bone fragments can be implanted above the base body. An upper margin and a lower margin are arranged at two ends of the base body respectively and are arc-shaped protrusions respectively. A first arc-shaped groove and a second arc-shaped groove are formed in the lower surface of the upper margin and the upper surface of the lower margin respectively. The second arc-shaped groove of the upper surface of the lower margin of a previous lamina body can be in seamless joint with the first arc-shaped groove of the lower surface of the upper margin of a next lamina body. A plurality of suture holes used for suturing are symmetrically formed in one sides, close to the base body, of the outer fixing piece and the inner fixing piece respectively. The multifunctional absorbable artificial lamina is proper in physical performance and mechanical strength, and can be widely applied to injury repairing of various structures such as rear sides, rear lateral sides and outer lateral sides of cervical vertebras, thoracic vertebras, lumbar vertebras and caudal vertebras.
Owner:陈哲
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