122results about How to "Meet practical needs" patented technology

The invention discloses a target tracking method based on a binary sensor Ad Hoc network. The target tracking method adopted by the invention comprises the following steps that: firstly, a sensor network system is deployed in site for carrying out network initialization and information updating; then, a sensor network node judges whether to trigger the position calculation or not; if the triggering conditions are satisfied, the node calculates the target position in the local place, and sends back the calculation results to a gateway gathering node of the sensor network system through a shortest route; and finally, a computer in the monitoring management center is responsible for collecting target tracking results of each node for forming the moving track of the tracked target. The method is characterized in that a vibration sensor uses an Ad Hoc network mode for forming a network system, realizes the optimization of two indexes: the target tracking precision and the calculation cost, the problem of large calculation amount is avoided, and in addition, the positioning precision is high. The method is also applicable to the network system formed by other binary detection sensors deployed outdoors, and realizes the tracking on moving vehicles or personnel.

The invention relates to a decision making technique for the events, in order to solve the problem of decision-making simply and rapidly under the condition of a large amount of knowledge. The invention, for each event, can group each condition and become one group for the condition with identical prior probability and identical ' and , or ' relation to form one condition group, the corresponding relation table can be established according to the mapping relation between events, conditions and condition group, then the knowledge base for decision making is established based on the information in the relation table. A decision making application system for the events, which includes a server providing with the knowledge base and a computer connected with the server, can be established based on the knowledge base; the computer may receive one or more conditions inputted by user, the server, for every condition received, can carry out special ergodic process in the knowledge base, and look up out all condition groups with the condition, and the relative decision probability for one or more events can be figured out based on the information such as maximum probability or value of condition group, the satisfied condition number.

The invention belongs to the field of research of solar energy utilization, and in particular relates to a longitudinal photovoltaic power prediction method based on historical data mining. The longitudinal photovoltaic power prediction method comprises the steps of: performing statistical analysis for historical photovoltaic power data in different seasons at first, so that six statistical indexes of photovoltaic power in corresponding seasons are obtained; clustering the statistical indexes by utilizing the Euclidean distance, so that similar day matrixes under different weather conditions in different seasons, and forming similar day typical curves and distribution intervals through a one-dimensional forward cloud generator; realizing longitudinal photovoltaic power prediction at the corresponding times in 24 hours in the future by utilizing the Markov Chain theory, and fusing the prediction value with the similar day typical curves and distribution intervals, so that a new prediction value is formed; and finally, performing weighted fusion of the new prediction value and the prediction value obtained through a continuous prediction method through a one-dimensional reverse cloud generator. Thereby, longitudinal photovoltaic power prediction based on historical data similar cloud fusion is realized; and thus, the photovoltaic power prediction precision is further increased.

The invention relates to a large-scale fast matching method in sentence level. The method of the invention comprises three stages which are index establishment, fuzzy matching and exact matching. The state of index establishment is in charge of carrying out the standardization of sentence content and conversion of code; the fuzzy matching stage is for picking up candidate sentences possible to match with new sentences from numerous sentences, and the number of the candidate sentences is controlled in a practicable range; the exact matching stage adopts a similarity measure algorithm based on edit distance; the final matched sentences are then obtained by arranging the candidate sentences according to the similarity of the exact matching. The method of the invention has the advantages of excellent performance of actual test, high efficiency of search, low undetected rate and being capable of meeting practical requirements.

The invention discloses a method for preparing a Ti5Si3/TiAl composite material, relates to a method for preparing a composite material and aims to solve the problems of poor uniformity, relatively lower compactness and high cost of a TiAl composite material prepared by using the prior art. The method comprises the following steps of: stacking pure titanium particles into a steel mold to obtain a porous titanium prefabricated body; and linearly cutting an Al-Si alloy ingot into blocks, placing the blocks on the porous titanium prefabricated body for hot pressing and sintering under a vacuum condition, cooling the porous titanium prefabricated body to room temperature and demolding the porous titanium prefabricated body to obtain the Ti5Si3/TiAl composite material. The method has the advantages of effectively improving material compactness (95 to 98 percent) and structural uniformity, improving high-temperature strength, creep property and oxidation resistance, meeting requirements on practicability, saving the process of ball milling and powder mixing in a powder metallurgical process, reducing the probability of the oxidation of Ti and Al and the blending of new impurities, and reducing the negative influence of the oxidation and the impurities on Ti Al-base alloy plates, and also has the advantages of simple process, easy operation, less equipment and low cost.

The invention provides a method and device for determining the wind-light access capacity. The method comprises the steps of determining a series of wind-light access capacity proportioning schemes in advance and building new energy power output time sequences and load time sequences of each group of proportioning schemes as inputs of a sequential production simulation and optimization model; building the sequential production simulation and optimization model employing the maximum new energy acceptance as a target to form an original optimization problem; dividing the original optimization problem into sub-optimization problems and solving the sub-optimization problems in each time interval; obtaining the new energy acceptance of the original optimization problem according to the new energy acceptance of the sub-optimization problems and calculating a new energy power limiting rate; and comparing the new energy power limiting rates of all wind-light access capacity proportioning schemes and determining the optimal wind-light access capacity corresponding to the lowest value of the new energy power limiting rates. The device comprises a determining unit, a comparison unit, a calculation unit and a decomposition unit. According to the method and the device provided by the invention, the work optimization efficiency and the optimization effect are improved and the requirements of the engineering practicability are met.

The invention relates to a fire alarm control system and a control method thereof. The fire alarm control system comprises a host unit, a battery unit, a direct control unit and a loop unit adopting a two-bus mode, wherein the loop unit comprises a switching circuit, a pulse modulation circuit, a return code current circuit, an analog-to-digital converter and field equipment. With the adoption of the fire alarm control system and the control method thereof, the problems that numerous multi-wire transmission lines exist and have high total failure rate and longer alarm time in the prior art are solved; and a digitized and non-polarized two-bus mode which is developed independently and integrates power supply, communication, control and alarm, so that the judgment for an alarming address only requires 8 ms on the premise that the baud rate is not increased, fire alarm information can be reported simultaneously in 2 seconds even through 255 detection points upload fire alarm information in the same polling period, and accordingly, the response time of fire alarm is shortened greatly.

The invention discloses an electric vehicle charging distributed system based on a block chain. The system comprises an electric vehicle, a P2P charging pile network based on a block chain architecture, and a power grid. The electric vehicle serves as a storage system and stores redundant electric quantity of the power grid. The charging pile network can realize real-time sharing of power demand information and real-time prices among power systems. Each charging pile in the network is used as an independent node, and the nodes obtain the demand information and the real-time discharging rewardprice from the power grid, schedule the corresponding electric vehicles to execute charging and discharging behaviors, generate corresponding transaction records according to the charging and discharging behaviors of the electric vehicles and write the transaction records into the block chain; and the power grid is a demand publisher in the system, sends the real-time demand information and the real-time discharge reward price to the charging pile network according to the state of the power grid, and adjusts the operation of the system of the power grid. According to the invention, the power system is developed towards a clean and efficient direction, and a good power ecological network is established.

A degradable mammary scaffold comprises a three-dimensional boundary structure and an inner filling structure; the outline of the three-dimensional boundary structure matches with actual tumor outline of an implant taking patient, the outline of the three-dimensional structure is extended by 1-5 mm along a normal direction based on the actual tumor outline, and the inner filling structure includes a three-dimensional elastic unit array that may intersect with the three-dimensional boundary structure to form the degradable mammary scaffold; after the degradable mammary scaffold is implanted in a human body, mammary form can be repaired, and good overall elasticity and good deforming characteristic to simulate natural mammary tissues are imparted; the unique porous structure of the degradable mammary scaffold helps ingrowth of tissue cells, and mammary implant separation, displacement and other risks are solved; with degrading of the scaffold, autogenous tissues replace the scaffold structure gradually, and finally self-repair is achieved.

The invention relates to a power supply management method and an electronic device. The method is applied to the electronic device, and comprises the steps that the corresponding relation between an electric parameter and a first service or application is configured; the electronic device monitors the current electric parameter; the electronic device is matched with the first service or application in the corresponding relation according to the current electric parameter and carries out service or application operation control according to the first service or application. By means of the power supply management method and the electronic device, electricity of a battery can be used more effectively, and more practical requirements for the electronic device of users are met.

The invention discloses an electroluminescence material based on anthracene derivatives as well as a preparation method and application thereof. The electroluminescence material based on the anthracene derivatives is of a 7-membered condensed ring structure; better planarity is realized; the injection and the transmission of current carriers are facilitated; the photoelectric performance of the material is improved; through a fused ring structure, the anthracene derivatives have good rigidity; the heat-resistant capability of the material is favorably improved; the practical requirements of the material are met. Through Suzuki coupling reaction, Uhlmann coupling reaction, still coupling reaction and the like, the electroluminescence material based on anthracene derivatives is obtained; theelectroluminescence material has good dissolution performance; the common organic solvent dissolution is used; a film is formed through rotary coating, ink printing or printing film forming; a luminous layer of a light emitting diode is obtained through preparation.

The invention provides a dour-dimensional adjusting platform for optical detection. The requirement for accurate multi-dimensional adjustment work is met. The platform comprises a base, a longitudinal placement platform, a transverse placement platform, a cloud deck seat, a cloud deck, a working platform, joints and corresponding adjusting mechanisms, wherein the base, the longitudinal placement platform, the transverse placement platform, the cloud deck seat, the cloud deck and the working platform are arranged sequentially from bottom to up, and the joints are in a pitching direction, a deflection direction, a horizontal transverse straight line direction and a horizontal longitudinal straight line direction respectively. The dour-dimensional adjusting platform is simple in structure and capable of achieving dour-dimensional adjusting and has high stability and adjusting accuracy.

The invention discloses a bi-component polyurethane coating with low infrared emissivity and a preparation method thereof, relating to coatings with low infrared emissivity. The bi-component polyurethane coating with low infrared emissivity is prepared from the following raw materials by weight: 91.7 of hydroxy acrylic resin, 8.3 of terpolycyantoamino-formaldehyde resin, 5 to 15 of floatable flake aluminum powder, 13.7 to 16.7 of titanium dioxide, 75 of acrylic paint thinner, 1.55 of a levelling agent, 1.55 of an antifoaming agent and 33.3 of an HDI biuret curing agent. The bi-component polyurethane coating prepared in the invention has a good color, good flowing performance and good infrared stealth performance; usage amount of metal powder in the coating is substantially reduced; and the coating has excellent comprehensive properties and is a low-infrared-emissivity coating satisfying practical needs.

The invention discloses a microprocessor-based intelligent dormitory control system. The system adopts the structure that devices inside a dormitory are in remote communication with a user through GSM (Global System for Mobile Communication), and are in short-range communication with a dormitory management total station; and the system utilizes an LM3S9B96 microcontroller in Corte* M3 series of an ARM (Advanced RISC Machine) architecture of the T1 company as a control core to realize intelligent control of college dormitories, provides a reliable way for dormitory security and protection, is applied to dormitories, can realize automatic monitoring of safety situations in dormitories, and also has a function of playing MP3 music or English listening as well as an intelligent characteristic and the like. In the system, at the safety aspect, the multi-sensor detection technology is adopted; wirelessness can be realized, remote monitoring and preinformation of the situations in the dormitories can be realized; not only the intelligent characteristic but also learning and entertainment features can be provided; and the system has a relatively wider application prospect, and has an important significance in terms of safety construction and intelligent promotion of the college dormitories.

The related non-aqueous electrolyte with flame-proof function for Li-ion cell is prepared by adding 1-100wt% (1-30% better) alkylphosphate (methyl-dimethylphosphonate) as the fire-retardant additive based on current product. When adding 5% the methyl-dimethylphosphonate, the electrolyte can reduce its self-extinguishing time obviously, and can achieve up non-combustible state when the addition quantity up to 10%.

A component composed by perovskite oxide film is prepared by core structure of peroskite oxide layer as perovskite oxide being RE-X TM X MnO3 with RE being La or/and Pr, Nb or Y; Tm being Sr or Ca and O being less than X being less than 1.0. The composed component can be used on various transducers, switch of self-rotation valve, storage unit of random access storage and some other self-rotation electronic elements.

The invention discloses a heat dissipation device for a rail vehicle inverter box in the technical field of the vehicle cooling device. The heat dissipation device comprises a box body. A support board is laterally mounted inside the box body; a mounting board is internally mounted in the support plate; and an inverter and a controller are installed at the top of the mounting board respectively. Acooling tube is installed at the bottom of the mounting board. Fans are installed at the two sides of the bottom of the inner cavity of the box body; and an air inlet is formed in the bottom of the box body. A drying plate I is installed above the air inlet at the bottom of the inner cavity of the box body. A box cover is hinged to one side of the top of the box body by a hinge. A temperature sensor is installed at the bottom of the box cover; air outlets are formed in the two sides of the outer wall of the box cover; and a drying plate II is installed at the top of the box cover. Under the effect of the fans and a cooling tube, heat is led out rapidly and is exchanged quickly to ensure the balance of the internal temperature of the box body; and the drying plate I and the drying plate IIdry the humid gas, thereby protecting the internal circuit from being in a short-circuit state. The heat dissipation modes are diversified; the heat dissipation efficiency is high; and the operationis simple.

The invention relates to a graphene-containing infrared low-emissivity coating. Resin serves as a base material, floating aluminum powder serves as metal pigment, and modified graphene which is dopedamong the floating aluminum powder to serve as a bridging component among the floating aluminum powder granules is dispersed in the coating, wherein the weight percentage of the adding amount of the modified graphene and the floating aluminum powder in the coating is as follows: 0.1 to 10 percent of the modified graphene and 15 to 35 percent of the floating sheet-like aluminum powder. The modifiedgraphene is added into the pure metal coating and then is distributed among metal powder fragments, and the bridging effect among the aluminum powder pigment fragments is achieved by utilizing the high electric conductivity, so that the whole electric conductivity of the coating is improved and the emissivity is reduced. Meanwhile, the infrared low-emissivity coating with low emissivity and low surface density, which is prepared by taking high-elasticity and high-toughness resin as a base material, can be applied to the parts, with remarkable infrared characteristic signals, of weapons such as surface ships and can effectively reduce the infrared radiation intensity of the ships.

The invention relates to the technical field of seamless steel pipes, and in particular, relates to a production method for a corrugated pipe blank extremely-thin wall stainless steel seamless steel pipe for nuclear power. The production method for the corrugated pipe blank extremely-thin wall stainless steel seamless steel pipe for nuclear power comprises the steps: round rod checking, punching, pickling, polishing, pipe blank checking, cold rolling, deoiling, heat treatment, straightening and cutting, pickling, cold drawing, deoiling, heat treatment, straightening and cutting, pickling, polishing, semi-finished product inspection, cold rolling, deoiling, heat treatment, straightening and cutting, pickling, performance testing, finished product inspection, identification, and packing and warehousing. The corrugated pipe produced by the method has relatively small thickness, the needs of production are met, the production process is fast and convenient, no toxic gases appear in the production process, the use effect of the produced corrugated pipe meets practical needs, and the competitiveness of enterprises is improved.

The invention relates to a light signal duplication system. The invention is a new light signal active duplication system, and the invention is mainly characterized in that a light amplification mechanism with low noise factor and low magnitude ratio is adopted, and the narrow band light filtering technology is integrated. The effect of the light amplification with low noise factor is obtained through the optimization design of the erbium doped fiber amplification mechanism, and the remarkable function is to reduce the accumulation speed of reducing the noise; the further integration of the narrow band narrow band light filtering can effectively suppress the accumulated amplification of the self radiation noise generated during the magnitude ratio process of the erbium doped fiber, and the total noise quantity in the loop is reduced; the adoption of the erbium doped fiber is advantageous to the elimination of the influence of the polarization state. Through the implementation of the methods, the deficiencies that the noise crosstalk interference existing in the current active duplication technology is large, and the polarization state influence is large are effectively solved.

The invention relates to a stereo image quality evaluation method based on region weight, which comprises: processing a left distortion map and a right distortion map by using a Canny edge detection method to obtain a left detection image and a right detection image; defined as a binocular region and a monocular region, At the same time, the present invention sets weight information for differentregions; for calculating regional weight quality score QIW-SSIM based on image content; for binocular region, calculating regional weight quality score QSW-SSIM based on stereo vision; comprehensive image based The content-based regional weight quality score QIW-SSIM and the regional weight quality score QSW-SSIM based on stereoscopic vision obtain the final stereoscopic image quality evaluation result.

The invention relates to a control system and method of additive manufacturing laser formation system integrated equipment and belongs to the technical field of additive manufacturing. The control system comprises a powder circulation system and a gas circulation system. The powder circulation system comprises a feeding barrel, a screening device, a material storage barrel, a collecting device, afeeding device and a vacuum unit. The gas circulation system comprises a vacuum unit, an inertia gas inlet, a gas storage tank, a circulation pump and a filter. According to the control system and method of the additive manufacturing laser formation system integrated equipment, through effective control over all the relevant devices of the powder circulation system, powder feeding to a laser formation module is achieved, and cyclic utilization of powder in a post-treatment chamber in a post-treatment module is also achieved; through control over all the devices of the gas circulation system, inert gas shielding protection of the laser formation module and high-vacuum-degree environment of a heat treatment module are achieved; and in this way, the efficiency of an additive manufacturing technological process is improved, waste of metal powder and inert gas is reduced, the operation environment of operation personnel is improved, and powder harm is lowered at the same time.

The invention discloses a thick antenna discrete ultrahigh frequency intelligent label which comprises a miniature ultrahigh frequency intelligent label module, a coupling amplification antenna, an insulated fill film and a two-layer composite film. The ultrahigh frequency intelligent label module is arranged on one surface of an ultrahigh frequency antenna. The insulated fill film is disposed on the same surface of the ultrahigh frequency intelligent label module of the ultrahigh frequency antenna. The ultrahigh frequency intelligent label module, the insulated fill film and the coupling amplification antenna are sandwiched by the two-layer composite film, thus realizing the waterproof function of the thick antenna discrete ultrahigh frequency intelligent label and meeting label bending requirements. The thick antenna discrete ultrahigh frequency intelligent label provided by the invention is especially suitable for fields of apparel trademark intelligent labels, tag intelligent labels, irregularly shaped intelligent labels and the like.

The invention discloses a deflocculating humic acid liquid water soluble fertilizer and a preparation method of the deflocculating humic acid liquid water soluble fertilizer. The deflocculating humic acid liquid water soluble fertilizer is prepared by the following raw materials in parts by weight: 0.06 to 0.09 parts of sodium humate, 0.01 to 0.03 parts of sodium alga acid solution with mass fraction of 1%, 0.21 to 0.23 parts of urea, 0.12 to 0.13 parts of monopotassium phosphate, and 0.54 to 0.58 parts of water. The preparation method comprises the following steps of: dissolving the sodium humate into the water, and agitating to fully dissolve; and then adding monopotassium phosphate, and agitating to fully dissolve; and finally adding the urea and the sodium alga acid solution in sequence, and agitating to fully dissolve so as to obtain the deflocculating humic acid liquid water soluble fertilizer, and subpackagging the obtained water soluble fertilizer to obtain the finished product. The deflocculating humic acid liquid water soluble fertilizer has high nutrient content, high stability in deflocculating, high water solubility, and high additional value.

The invention belongs to the field of pharmaceutical preparations, and relates to a tumor targeted drug nanocrystal delivery system and a preparation method and application thereof in pharmacy. The tumor targeted drug nanocrystal delivery system is composed of an anti-tumor drug nanocrystal core and a coating material; one or more biocompatible phospholipids, vitamin E polyethylene glycol 1000 succinate, folic acid-polyethylene glycol-phosphatidyl ethanolamine and methoxy polyethylene glycol-phosphatidyl ethanolamine are mixed according to a certain ratio, and insoluble anti-tumor drug nanocrystals are coated with the obtained mixture; the obtained tumor targeted drug nanocrystal drug delivery system can be stably dispersed in an aqueous environment, and experiments prove that the tumor targeted drug nanocrystal drug delivery system can effectively inhibit the growth of tumor cells and can effectively reduce the tumor volume after being subjected to peritumoral injection for an animalmodel. The invention provides a new preparation form capable of peritumoral injection for preoperative adjuvant chemotherapy of a solid tumor.