115results about How to "Strong matching" patented technology

Disclosed is an automatic assembling machine for assembling a vehicle-mounted encoder. The automatic assembling machine comprises a rotating table assembly, a cam indexer assembly, a support feeding mechanism, a manual pendulum shaft core and shaft sleeve feeding mechanism, a first rotor feeding mechanism, a first drive plate feeding mechanism, a second rotor and second drive plate assembling mechanism, a manual pendulum body feeding mechanism, a riveting mechanism and a discharging mechanism, wherein the rotating table assembly, the cam indexer assembly, the support feeding mechanism, the manual pendulum shaft core and shaft sleeve feeding mechanism, the first rotor feeding mechanism, the first drive plate feeding mechanism, the second rotor and second drive plate assembling mechanism, the manual pendulum body feeding mechanism, the riveting mechanism and the discharging mechanism are arranged on the top of a machine box. The automatic assembling machine further comprises two shape trimming assemblies and a plurality of detection assemblies, wherein the shape trimming assemblies are used for shape trimming of supports. A plurality of station clamps are arranged on the circumferential edge of a rotating table of the rotating table assembly in an array mode. A rotating pendulum assembly is further arranged on the top of the machine box in a matched mode. The feeding mechanisms are matched with the movement of the rotating table assembly to conduct feeding in sequence, the riveting mechanism conducts riveting on parts of the encoder to form an encoder finished product, the discharging mechanism enables the encoder finished product to be discharged into a collecting box, the shape trimming assemblies conduct opening shape trimming and inward extrusion shape trimming on the supports, and the rotating pendulum assembly is used for transmitting a second rotor and second drive plate assembly assembled by the second rotor and second drive plate assembling mechanism to the matched station clamp.

The invention provides a silk screen printing plate. A screen frame comprises an inner screen frame, a middle screen frame and an outer screen frame. A sliding groove is formed in the middle screen frame. A sliding rail matched with the inner screen frame is formed on the inner screen frame. The middle screen frame is provided with a blocking frame. A plurality of springs are evenly distributed between the inner screen frame and the blocking frame. An adjusting bolt is arranged on the outer screen frame in a matched mode. A silk screen is provided with an adjusting aligning point. An adjusting aligning scale is arranged on the outer screen frame. Accordingly, by means of the silk screen printing plate, silk screen patterns can be adjusted and aligned effectively, high-quality double-printing is achieved, obvious deformation of the silk screen can be avoided effectively, and the printing quality of the silk screen patterns is guaranteed. The invention further provides a double-printing device, the double-station double-printing operation can be achieved, the silk screen printing plate is excellent in effect, and the double-printing efficiency and quality are improved remarkably. The invention further provides a double-printing machine which has the excellent effects of the silk screen printing plate and the double-printing device, and the double-printing efficiency and quality are improved remarkably. The invention further provides a double-printing process. The process is concise and clear and high in double-printing efficiency and quality.

The invention discloses a sketch retrieval method based on content adaptive Hash encoding. The method is characterized by including the steps: candidate windows are adaptively selected from sketches or outlines under retrieval according to their contents and are used for feature extraction, and information included in whole pictures are evenly distributed to the windows; significance of each feature window is detected by a key point based significance detection method; local visual features, significance and structural spatial features of the stretches or outlines are combined and complied into Hash feature codes by a locality sensitivity based Hash algorithm; the Hash feature codes of the sketches or outlines are indexed, Hamming distances of the Hash feature codes are calculated to measure similarity of the sketches, and highly similar ones of the sketches are returned to users. The method has the advantages that precision is higher, applicable range is wider and matching capacity is higher.

The invention provides an erasable gel ink which consists of the components as follows: (a) 5-40 parts by weight of temperature sensitive dye; (b) 0.5-5 parts by weight of wetting and dispersing agent; (c) 0.1-8 parts by weight of thickening agent; (d) 0.1-5 parts by weight of adhesion promoter; and (e) 5-30 parts by weight of moisture lubricant; (f) 0.05-0.5 parts by weights of antiseptic anti-mildew agent; (g) 15-85 parts by weight of water. Total weight of the components (a)-(g) accounts for 98-100% of the entire compound weight. The invention also provides a preparation method of the gel ink and a product employing the gel ink of the invention.

The invention discloses a full-automatic screen printing machine comprising a control system, a rack, a printing assembly, a feeding mechanism, a material receiving mechanism, a circulating conveying mechanism and two conveying devices. The feeding mechanism and the material receiving mechanism are each internally provided with a plurality of conveying channels; joints between the feeding mechanism and the printing assembly and between the material receiving mechanism and the printing assembly are each provided with a vertical transfer device; the vertical transfer devices are used for transferring material carrying plates between all the layers of conveying channels and / or are used for transferring material carrying plates between the conveying channels and the printing assembly; a moving and loading assembly is arranged at the lower end position of the printing assembly; a printing positioning device is further arranged in a matched printing area of the lower end of the printing assembly; and the positions of the material carrying plates are corrected through the printing positioning device, and the printing assembly is made to complete accurate printing. According to the full-automatic screen printing machine, the feeding mechanism and the material receiving mechanism surround the printing assembly, the double-layer conveying channels are arranged in the feeding mechanism and the material receiving mechanism, the online plate number storage amount of the printing machine is increased, the functions of one printing machine are increased and extended, the full-automatic screen printing machine is suitable for multi-color printing of different category requirements, and the printing machine is high in utilizing rate and production efficiency and low in cost.

The invention discloses a method for the rough draft shape matching based on the Modular product graph and the maximum clique. The method comprises the following specific steps that shape analysis and feature extraction are conducted on graphic data, so that essential data expressing images are obtained; based on shape feature expressions of the labeled graph and the weight graph, the extracted data are labeled or coded, so that topological graphs are obtained; the topological graphs are compared through a similarity calculation model, the labeled or coded data are completely matched or part of the data are matched, similarity data are obtained through calculation, and whether the graphs are similar to one another is judged. According to the method, matching of graph models with different numbers of nodes can be processed and partial matching can be conducted as well. Compared with the matching method based on vectors, the method for the rough draft shape matching based on the Modular product graph and the maximum clique is higher in accuracy, higher in adaptability and higher in matching capacity.

The invention discloses a three-dimensional reconstruction method for aerial images of an unmanned aerial vehicle based on deep learning, and belongs to the technical field of computer vision. On thebasis of an existing three-dimensional reconstruction method, the three-dimensional reconstruction method of the aerial image of the unmanned aerial vehicle based on deep learning is provided according to the multi-view geometry theory. The method comprises the following steps: S1, improving an MVSNet network model; s2, training the improved network model by using the Blended MVS data set; s3, performing data acquisition by using a plurality of cameras on the unmanned aerial vehicle; s4, performing format processing on the picture data acquired in the step S3; and S5, converting the depth mapinto a 3D point cloud map by adopting a depth map fusion algorithm technology, and storing the 3D point cloud map. According to the method, an MVS (Multi-View Stereo) algorithm combined with a deep learning thought is adopted, and the MVS is used as an estimation method for carrying out dense representation on the overlapped images, so that the method has the advantage of high reconstruction precision. Meanwhile, the reconstruction rapidity and integrity are effectively improved by utilizing deep learning.

The invention discloses a mechanical pretreatment system for municipal domestic waste comprehensive treatment (marsh production). The system comprises a coarse crushing unit, a vertical shaft hammer type grinding unit and a dry-wet component extrusion and separation unit which are arranged in sequence. The units are sequentially connected through a conveying machine. The invention further discloses a mechanical pretreatment process for municipal domestic waste comprehensive treatment adopting the mechanical pretreatment system. The process comprises the process steps of coarse crushing, vertical shaft hammer type grinding and dry-wet component extrusion and separation. The technical defects that organic matter separation efficiency is low and the impurity content is high according to existing domestic waste comprehensive treatment mechanical pretreatment are overcome, the waste receiving adaptability is high, the equipment integration degree is high, continuous stable operation is achieved, various kinds of domestic waste with complex ingredients are used as raw materials, dry and wet components are produced to meet different follow-up technological requirements, coordinated treatment of various kinds of municipal domestic waste is achieved, and the system and the process are suitable for being applied and popularized.

The invention discloses a double-platform shunt-excitation horizontal vibration test system with a combined table facet, and the system comprises two vibrating platform bodies, two external supporting seats, one internal supporting seat, two connecting pieces, a horizontal sliding table substrate, a bearing installation plate, a bearing structure, an oil tank frame, a horizontal sliding plate A, and a horizontal sliding plate B. The internal supporting seat is disposed between the two external supporting seats, and the two vibrating platform bodies are respectively disposed between the internal and external supporting seats in a supported manner, and are respectively in detachable connection with the horizontal sliding plates A and B, supported above the bearing structure, through the connecting pieces. The bearing structure is a bearing structure which enables the horizontal sliding plates to vibrate in an excitation direction in a unidirectional manner. The bearing structure is fixed on the bearing installation plate, and the bearing installation plate is fixed on the horizontal sliding table substrate. The system can carry out combined test, also can analyze the horizontal sliding plates, carries out a single-platform vibration test, is good in matching performance, is good in performance of frequency transmission, and saves the test cost.

The invention relates to a locking mechanism for a chassis battery of an electric passenger car, which comprises an electric lock combined device and a battery hanging combined device matched with the electric lock combined device, wherein a torque is output to the electric lock combined device by a motor and the electric lock combined device is driven by a worm gear, thereby realizing the releasing and the locking between a worm gear arc-shaped slot and a battery combined hook. With the help of the releasing and the locking of the mechanism, the battery hanging combined device assembled witha battery is used for fixing or separating the battery with or from the electric passenger car. The locking mechanism for the chassis battery of the electric passenger car has the advantages of high automation degree, high reliability, strong matching property and low demand on operation skills, and can be used for quickly fixing or separating the battery with or from the electric passenger car.

The invention discloses a single-stage forward type high-frequency linked inverter belonging to the field of power electronic inverter and comprising a primary side circuit, a first high-frequency transformer, a second high-frequency transformer and a secondary side circuit, wherein the primary side circuit comprises a power supply, two voltage-dividing capacitors and four power switch pipes; the first high-frequency transformer and the second high-frequency transformer both comprise primary side windings and secondary side windings; and the secondary side circuit comprises three four-quadrant high-frequency power switch, a filter inductor, a filter capacitor and a load. The single-stage forward type high-frequency linked inverter is formed in such a way that two two-way power flow forward converter units are in series connected at input ends in a staggered way and in parallel connected at output ends in the staggered way, the two two-way power flow forward converter units work in the staggered way all the time, and diodes of switch pipe bodies realize the magnetic resetting of the high-frequency transformers. The invention has low voltage stress of primary and secondary side switch pipes, low capacity of the voltage-dividing capacitors and high transformation efficiency and reliability, is suitable for a medium voltage input occasion and a high voltage input occasion and especially has extensive application prospect in a new energy power generation field.

The invention relates to a lamp body of an LED downlight, which comprises a cylinder body, a cover plate and a radiator. One end of the barrel is open, the other end is covered with the cover plate, and the radiator is formed on the outer surface of the cover plate. The cylindrical body includes a first cylindrical portion connected to the cover plate and a second cylindrical portion connected to an end of the first cylindrical portion away from the cover plate. A stepped surface facing the opening direction of the cylinder body is formed between the inner surfaces of the first cylinder part and the second cylinder part. An annular groove and a plurality of fixing holes are formed on the step surface. The lamp body can be matched with the traditional LED lamp board, and also can be matched with the integrated LED light source, which has strong compatibility. In addition, the present invention also provides an LED downlight having the above-mentioned lamp body.

A process for preparing the high-purity reagent acid by use of a rectifying equipment is disclosed. said rectifying tower is composed of lower filler tower and upper thorn-type distilling tower. Said process includes such steps as automatically preheating raw material, coming in distilling still, heating by coiled quartz tube is said distilling still, rectifying in rectifying tower, preheating, and condensing to obtain liquid product.

The invention provides an airtight container leakage positioning and measuring system based on ultrasonic detection. A hardware system comprises a main control single-chip microcomputer, an ultrasonictransmitting circuit, an ultrasonic receiving circuit, an audio recognition processing module, and a power supply module; a software platform can achieve ultrasonic transmitting, local oscillation signal generation driving and serial port data transmission through C language. The system is mainly used for detecting gas leakage of a high-pressure sealed container or a pipeline and positioning leakage in the presence of leakage. The system has the main advantages of safety and simplicity in leakage positioning measurement operation, convenience in system use, low device cost, relatively high positioning precision, wide range of measured objects and the like. The system has the advantages of low detection and positioning cost, relatively high precision, small method limitation, universalityand transportability, and huge market promotion and application potential.

The invention discloses an OpenFlow large-scale flow table elastic energy-saving and efficient search architecture and method, and the architecture comprises an active precise flow layer which is usedfor caching active precise flow table entries in a network, and achieving the high-speed and low-power flow table cache search; a convergent flow layer which is used for storing universal flow tableentries so as to relieve the problem of insufficient TCAM storage capacity and improve the TCAM cache hit rate; wherein the convergent flow layer comprises a TCAM and a DRAM; the individual flow layeris used for storing accurate flow table entries which do not meet the aggregation condition temporarily so as to improve the packet forwarding capability of the OpenFlow switch; the bulk flow layer includes an SRAM and a DRAM. According to the method, the sparse grid is constructed by using the cross linked list, the cache space is dynamically applied, all accurate flows meeting conditions can bestored, no empty table item exists, the space utilization rate is very high, and the method can adapt to dynamic change of network flow and is rich in elasticity.

The invention discloses a three-dimensional general force measuring platform for a satellite force limit vibration test. The three-dimensional general force measuring platform comprises an upper auxiliary tool, a lower auxiliary tool and a three-dimensional force sensor arranged between the two auxiliary tools, wherein the three are in mechanical connection, and the pretightening force of the mechanical connection can ensure that the contact surface of the three are in close cooperation, the pretightening force between the three-dimensional force sensor and the auxiliary tools is greater than the maximum force born by force sensors and the multiple force sensors bear uniform forces when a force measuring device bears a vertical or horizontal force; and force combination and resultant moment calculation are performed on force signals obtained by the three-dimensional force sensor through a force signal adjusting system, and the force signals are in electric communication with a vibration test control system for force limit control. The three-dimensional force measuring platform provided by the invention can cooperate with vibration test clamps of different products for use, and has the advantages of high matching, good frequency transmission characteristics and saved test cost.

The invention discloses a dual-input direct-current (DC) converter, belonging to the field of electronic convertors. Three converters respectively comprise two input sources, a switching tube, a transformer, a secondary circuit and the like, wherein the two input sources are subjected to common ground and are arranged at a primary side of the transformer; and the two input sources are electrically isolated from the load by the transformer. The two input sources adopted by the converter can supply power for the load independently or simultaneously; the converter has strong load matching capacity; the two input sources share the primary side of the transformer; and the number of switching elements is less, and the conversion efficiency is high. The dual-input DC converter is particularly suitable for the fields of new energy resource generating systems and the like.

The invention discloses an intelligent wearing device for vision recovery of a patient with posteriority blindness and a making method thereof. The device comprises microelectrode arrays, a pair of intelligent glasses, earphones, elastic belt buckles and stimulating signal guide soft belts, wherein the microelectrode arrays are arranged in the eyes of the patient; the intelligent glasses, the earphones and the elastic belt buckles are arranged outside the eyes of the patient; the stimulating signal guide soft belts are arranged between the microelectrode arrays and the intelligent glasses. An outside image is shot by a microcamera arranged in front of the intelligent glasses and processed by a control system into a bidirectional electronic impulse signal, and the signal is transmitted by the stimulating signal guide soft belts to the microelectrode arrays arranged between the outermost layers of retinas and choroids to electrically stimulate ganglion cells; optic nerves transmit a biological signal generated by stimulation to a visual area of the cerebral cortex, are recognized by the brain and then make the blind patient restore part of visual performance to an outside object. The intelligent wearing device has the advantages of being good in stimulation effect, safe in use, attractive in appearance and convenient to wear.

The present invention discloses communication terminal calling number matching method, said communication terminal having stored linkman information and linkman phone number corresponded relation. Said method includes communication terminal extracting calling phone number received from network side information; using comparative mode from number end to number head, matching calling phone number with linkman phone number stored in communication terminal, using fitting postulated conditions linkman phone number as matching result.

The invention discloses an artificial intelligence apparatus for multi-dimensional fidelity collection of stratified water samples in a high dam and a deep reservoir and water quality monitoring. Theartificial intelligence apparatus includes a sampler main cabin body. A static pressure gas cylinder is disposed on the upper part of the sampler main cabin body, and an array water sampler, a posturebalance sensor, and an illumination camera system are disposed on the lower part of the sampler main cabin body. Propulsion apparatuses are disposed at the front and rear ends of the sampler main cabin body, and balance apparatuses are disposed on both sides of the sampler main cabin body. The integrated intelligence system apparatus in the invention is an artificial intelligence sampling apparatus for integrating functions such as high-definition underwater topography observation, undisturbed stratified collection, vertical stratified accurate sampling for a water body, and synchronous monitoring of key physical and chemical parameters, and the artificial intelligence apparatus has advantages such as no disturbance, high precision, high fidelity, high efficiency, powerful matching and low risk, and provides powerful technical support for further research on an environmental ecological effect of a large-scale water conservancy project.

The embodiment of the invention provides a method for realizing matching of a radio over fiber system. The method comprises the following steps of: dividing a matching network into an upper limit frequency range sub-network, a central frequency range sub-network and a lower limit frequency range sub-network, and respectively matching; selecting two stub lines for matching the network, and optimizing stub line parameters based on a genetic algorithm; measuring a reflection coefficient and a transfer power gain of the matched network, respectively comparing the measured values of the reflection coefficient and the transfer power gain with respective pre-set thresholds, when the measured values of the reflection coefficient and the transfer power gain both are not satisfied with the pre-set conditions, regulating the parameters of the matched network again; when the measured values of the reflection coefficient and the transfer power gain both satisfy the pre-set conditions, determining the parameters of the matched network as the final parameters of the matched network. The embodiment of the invention can realize matching of the radio over fiber system within wide frequency range, and the matching performance and the robustness of the matched network both are stronger.

The invention relates to a flotation broken froth detection method based on rapid retina feature point matching and multi-scale segmentation. The flotation broken froth detection method comprises the following steps: firstly, collecting two continuous frames of flotation froth images, carrying out NSST decomposition on the two frames of froth images, carrying out froth edge detection and fusion on a multi-scale high-frequency sub-band, and extracting a central point of each segmented froth in a next frame of image; secondly, carrying out feature point description and matching on the two frames of images by adopting an improved FREAK sampling model, and extracting candidate broken froths according to the distribution density of matching points around the previous frame of segmented froths; finally, mapping the central point of each segmented froth in the next frame of image into the previous frame of segmented image, counting the central point number contained in the candidate broken froths; and judging the candidate broken froths containing a plurality of center points or without center points as broken froths. For the flotation broken froth detection method based on rapid retina feature point matching and multi-scale segmentation, the improved FREAK algorithm is high in matching effect and real-time performance, and the broken froth detection method is less influenced by illumination and motion changes, and the broken froths can be effectively extracted.

The invention discloses an automatic deviation-adjusting device. The automatic deviation-adjusting device comprises an deviation-adjusting base, an deviation-adjusting bracket body, a detecting mechanism and a driving mechanism, wherein the deviation-adjusting base comprises a cross beam and a supporting plate; the detecting mechanism is used for generating and sending out a deviation signal while detecting the leftward deviation and rightward deviation of a workpiece; the driving mechanism is used for acquiring an deviation-adjusting signal according to the deviation signal and driving the deviation-adjusting bracket body according to the deviation-adjusting signal; the deviation-adjusting bracket body comprises a hanging bracket body, side bracket bodies, supporting wheels and a linking mechanism; the hanging bracket body can rotate by taking a first connecting piece as the circle center; the side bracket bodies of the deviation-adjusting bracket body are connected to the driving mechanism, and can rotate left and right under the drive of the driving mechanism; the linking mechanism is fixed on the deviation-adjusting bracket body, and is used for driving the workpiece to correspondingly move left and right along with the leftward and rightward rotation of the deviation-adjusting bracket body. By the adoption of the automatic deviation-adjusting device, manual inspection or adjustment is not needed, the labor productivity is improved, and the automatic deviation-adjusting control is realized.

The invention relates to a continuous reversible precision sawing machine, comprising a saw cutting main machine, a roller way and a pressing roller group, wherein the saw cutting main machine comprises a gantry frame and a circular disc saw, and the circular disc saw is arranged on a cross beam guide rail of the gantry frame; the roller way is laid under the gantry frame and comprises a receiving roller way, a working roller way and a finished product discharging roller way, and the working roller way can rotate forward and reversely; and the pressing roller group is arranged on the working roller way and is used for pressing a plate on the working roller way in the process of saw cutting. The sawing machine adopts a pressing mode with the pressing roller group, respectively applies dynamic pressing to the plate in the whole process of saw cutting, can realize multi-pass and multi-mode high-accuracy saw cutting and improve metal yield when in saw cutting.

The invention discloses an aluminum profile defect detection method. The method comprises the following steps: detecting the surface of an aluminum profile by adopting an aluminum profile surface defect detection model; if flaws are detected, performing category judgment and regression positioning on the flaws, wherein the aluminum profile surface defect detection model takes Resnet-101 as a main network; the aluminum profile surface flaw detection model adopts a feature pyramid network and a deformation convolution algorithm and is used for performing targeted detection on irregular flaws on the surface of an aluminum profile; according to the aluminum profile surface defect detection model, an ROI Align feature map extraction algorithm and an improved candidate box generation network loss function are adopted to position tiny defects. A feature pyramid network model is improved through a deformation convolution algorithm, so that the detection model has higher matching capability for irregular flaw features; and by improving a candidate box generation network loss function, the regression positioning of the detection model on the tiny flaws is more accurate.

The invention discloses an automatic format digital jet printing system. The automatic format digital jet printing system comprises multiple movable screen printing mechanisms and a digital jet printing mechanism, the two ends of the digital jet printing mechanism are in butt joint with the movable screen printing mechanisms through movable oven assemblies and / or transfer assemblies, every two adjacent movable screen printing mechanisms are connected through at least one movable oven assembly, and the multiple movable screen printing mechanisms, the movable oven assemblies, the transfer assemblies and the digital jet printing mechanism are matched to form a printing production line with the changeable printing chromatic number and the changeable printing station position; a material feeding assembly and a material receiving assembly are arranged at the head end and the tail end of the printing production line respectively, the material feeding assembly is used for conveying material carrying plates carrying screen printing matter to the printing production line one by one, the material carrying plates carrying the screen printing matter moves along the printing production line and completes multicolor screen printing and jet printing in a matched mode, and the material receiving assembly is used for completing discharging of the screen printing matter for screen printing and jet printing. The printing system integrates digital jet printing and screen printing functions and is good in printing effect.

The invention discloses an assistant alloy for improving coercive force of an NdFeB permanent magnet material and an application method, and belongs to the field of magnetic materials. A general formula of the alloy is (Pr<1-x>R<x>)<6>Fe<13-y>M<y>Al, wherein R is one or a combination of La, Ce and Nd, and M is one or a combination of Cu and Ga; and value ranges of x and y in the general formula are respectively 0<=x<=0.5, and 0<=y<=1. The provided assistant alloy is added into a main alloy in a certain proportion, the effects of improving the microscopic structure of the grain boundary of an NdFeB magnet and increasing intrinsic coercive force and square degree of the magnet are achieved after sintering, and the problems of high production cost or substandard overall performance of the materials commonly existing in improving of the coercive force of the NdFeB in the prior art are solved.

The invention discloses a high-adaptability temperature-resistant plugging agent and application method thereof. The high-adaptability temperature-resistant plugging agent comprises the following components in percentage by weight: 31-34% of activated clay, 30-33% of flexible graphite, 30-31% of mica powder, 2-3% elastomer sponge and 2.5-3.5% of fibers. The invention further provides a preparationmethod of the high-adaptability temperature-resistant plugging agent and application thereof in preparation of plugging working fluid. Based on the base solution per 100milliliters, the addition amount of the high-adaptability temperature-resistant plugging agent is 8-15g. The method comprises the following steps: determining the setting depth of a light drill stem to be the top of a leakage zoneaccording to the leakage condition, accurately replacing the plugging slurry to the required position, rapidly lifting the drilling tool to a safety position, waiting or shutting in and building thepressure for 2-4 hours, and completing the plugging process. The plugging agent is excellent in temperature resistance and high in crack matching degree and can effectively enter the leakage zone to form plugging, the plugging success rate is improved, the plugging formula is single aiming at the leakage zone of different crack width, and convenience is brought to field operations.

The invention provides a semimetal magnetic material with high spin polarization. The chemical formula of the material is VxCoyNzMw, wherein N is an III-V group element; M is a transition group element; x is smaller than or equal to 2 and greater than 1; y is smaller than 2 and greater than or equal to 0; z equals to 1; w is smaller than or equal to 1 and greater than or equal to 0; and x+y+z+w equals to 4. A preparation method of the material comprises the following steps of: (1) weighing materials in the proportion of the chemical formula VxCoyNzMw, and putting the materials into an electric arc crucible, wherein N is one or more of Al, Ga, In, Si, Ge, Sn and Sb in the III-V group element, and M is one o more of V, Cr, Mn, Fe and Ni in the transition group element; (2) filling argon in an arc electric furnace after the electric arc furnace is vacuumized, cooling the materials after the materials are subjected to electric arc melting for 2-3min under the protection of a positive pressure of 0.01MPa to 1MPa or flowing argon; and repeating the melting for 3-5 times so that alloy materials are uniformly distributed, and finally obtaining the product. The spin polarization of the semimetal magnetic material is between 90% and 100%, and is between 80% and 96.2% in actual measurement; and therefore, the semimetal magnetic material represents extremely high spin polarization.

A preparation method of composite toughened glass comprises the following steps of: melting, clarifying and homogenizing all component raw materials of set glass to obtain molten glass without defectssuch as bubbles, stripes and the like; cooling the defect-free molten glass to a proper temperature, then adding a nanoscale ZrO2 crystal, and continuously stirring to obtain uniformly mixed molten glass; carrying out molding and annealing treatment on the uniformly mixed molten glass to obtain nanoscale ZrO2 crystal reinforced glass; carrying out efficient ion exchange chemical strengthening onthe reinforced glass to obtain composite toughened glass which is high in surface pressure stress, large in ion exchange layer depth and capable of meeting cover plate protection. The composite toughened glass provided by the invention has effectively-improved strength and toughness and improved mechanical properties, and can be widely applied to the fields of cover plates of electronic equipment,household appliances, display devices and the like.