36results about How to "Meet the requirements of actual use" patented technology

The invention discloses a friend relationship mining method combining network topology characteristics and user behavior characteristics. The method comprises the following steps of (1) establishing a friend relationship network diagram and randomly selecting 90% of friend relationship connection edge data as a training set and the rest of 10% as a test set; (2) constructing two weighted undirected graphs of a friend relationship network based on topological similarity; (3) constructing two weighted undirected graphs of a friend relationship network based on user behavior characteristic similarity; and (4) utilizing a community detection algorithm (CNM algorithm) based on weighting modularity to respectively carry out community division on the four weighted undirected graphs, if any two users are classified as one community in a division process of the four communities for at least three or more times, considering that the two users are friends. The method introduces the topology characteristics and the behavior characteristics are introduced into the user friend relationship networks and mines whether the two users are the friends through community division.

The invention discloses an anti-face recognition method based on PSO, comprising the following steps: S1, pre-processing the attacker's face data and adding a data set; 2, training a face classifier by use a mixed data set; 3, setting PSO parameters and antagonizing attack parameters; S4: initializing the PSO and starting the iterative evolution process to find the optimal countermeasure against the disturbance; S5: extracting and materializing the countermeasure accessories for physical attack test. The invention aims at the black box face recognition system, generates the optimal anti-disturbance through the PSO evolutionary strategy, realizes the materialization of the anti-disturbance through the facial accessories, can realize the effective anti-face recognition in the digital and physical environment, and has better model generalization ability and practical application value compared with other white box attack strategies.

The invention provides a catering friend edge influence prediction method based on multivariate linear regression, and belongs to the field of data mining. Firstly a friend network diagram is established according to the friend relationship; then the topological characteristics in the friend network are extracted; the general characteristics of the user are considered, and non-topological characteristic information in the friend relationship is extracted; and connection of each characteristic and the final user friend relationship is obtained by using a multivariate linear regression model. The method comprises the steps that the characteristics are selected according to the data set, and a prediction model is established by using the linear regression method. According to the catering friend edge influence prediction method based on multivariate linear regression, the topological characteristics in the friend network and the overall non-topological characteristics of the user are integrally considered so that the friend edge influence can be predicted.

The invention provides a double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinder and belongs to the technical field of machinery. The double-acting hydraulic ejecting type vacuumizing and compressing device solves the problem that compressing capacity or vacuumizing capacity of an all-in-one machine of a piston type vacuum pump and a piston type air compressor cannot achieve the actual application requirements and comprises a hydraulic cylinder body and two cylinder bodies, wherein the cylinder bodies are respectively connected with two ends of the hydraulic cylinder body, a hydraulic cylinder piston is arranged in the hydraulic cylinder body, a double-extending rod with two ends respectively extending out of the hydraulic cylinder body and entering the cylinder bodies is fixed on the hydraulic cylinder piston, cylinder pistons fixed on corresponding end portions of the double-extending rod are respectively arranged in the two cylinder bodies, and an air inlet valve and an air outlet valve for communicating a cavity of the cylinder are respectively arranged on the end portions of the cylinder bodies on two sides of each cylinder piston. The double-acting hydraulic ejecting type vacuumizing and compressing device can integrate air compressing and vacuumizing, has three functions in one machine and can achieve the requirements for actual using.

The invention discloses a preparation process of a PTFE ceramic composite high-frequency copper clad laminate, comprising the following steps: composition of a ceramic filler: 25 to 35% of magnesium oxide, 45 to 55% of titanium dioxide, 0 to 5% of manganese dioxide, 0 to 5% of zinc oxide, and 0 to 5% of calcium oxide, etc.; and composition of slurry: 10 to 40% of a ceramic filler, 40 to 60% of a PTFE emulsion, 0.3 to 3% of a coupling agent, and 0 to 1% of an additive. According to the preparation process of the PTFE ceramic composite high-frequency copper clad laminate, the PTFE ceramic composite high-frequency copper clad laminate can be obtained through processes of pulping, glass cloth gluing, drying, slicing, dispensing, combined lamination, vacuum pressing, cutting and the like. The preparation method of the invention can help realize a high-precision dielectric constant, a low dielectric loss and a low water absorption rate of a dielectric constant 3 to 6 series of the PTFE ceramic composite high-frequency copper clad laminate.

The invention discloses a method for calculating the state of charge of a battery in a battery management system, after starting and electrifying the battery management system, the method comprises the following steps: (1) calculating time interval t between startup at this time and shutdown at the last time; (2) judging time determined by the time interval t and total voltage of a battery pack; (3) calculating initial value of the state of charge SOC0 of the battery; and (4) calculating the state of charge SOC of the battery through a formula. With the adoption of the method for calculating the state of charge of the battery in the battery management system, the calculated value of SOC can achieve the precision of 5% when the actual value of the SOC is 30-70% and the precision of 3% when the actual value of the SOC is higher or lower, thereby being capable of better meeting the demands of actual use of new energy automobiles.

The invention belongs to the technical field of processing of hard alloy wear parts, and discloses a hard alloy wear part and a preparation method and application thereof. The hard alloy wear part iscomposed of the following alloy components of percentage by weight: 6-15% of Co powder; 0.05-0.4% of rare earth element; 0.1-0.6% of an inhibitor; and the balance WC; and the sum of all the alloy components is 100%. The invention adopts Cr3C2 as an inhibitor in the hard alloy wear part, and the inhibition effect is good, and the addition of the rare earth element can further strengthen the inhibition effect, and can also strengthen the toughness effect of Co, and through the synergistic action of the Cr3C2 and the rare earth element, the hardness and bending strength of the hard alloy wear part are significantly improved, and the service life of the hard alloy wear part is prolonged.

The present invention relates to a deviation-rectifying equipment of trackless mobile shelf. It includes two groups of drive motors mounted on left portion and right portion of shelf chassis type jackplane, guide deviation-rectifying sensor device and controller, its guide deviation-rectifying sensor device is formed from photoelectric sensor mounted on one side surface of shelf chassis type jackplane and guideway fixed on the ground surface. Besides, it also includes a pair of infrared transmitting photoelectric switch and infrared receiving photoelectric switch.

The invention discloses a CsPbX<3> perovskite nanocrystalline electroluminescent diode with a self-assembled multi-dimensional quantum well, and belongs to the field of nanotechnology and light-emitting display. The diode is composed of a transparent conductive oxide anode TOC, a hole transport layer material HTL, a CsPbX3 nanocrystalline light-emitting layer EL with a multi-dimensional quantum well structure, an electron transport layer material ETL and a metal cathode CL. Firstly, a self-assembled multi-dimensional quantum well CsPbX3 nanocrystalline solution is prepared by adopting a chemical synthesis method. Then, a hole transport layer material HTL, a CsPbX3 self-assembled multi-dimensional quantum well nanocrystalline solution and an electron transport layer material ETL are spin-coated on the TOC by adopting spin-coating technology. Finally a metal cathode CL on the ETL is deposited by adopting a vacuum evaporation technology. According to the invention, any emission spectrumwithin a visible light emission range of 400-700 nanometers can be realized by regulating and controlling the dimension and components of the self-assembled multi-dimensional quantum well CsPbX3 nanocrystalline; the fluorescence quantum yield of the CsPbX3 nanocrystalline with the multi-dimensional quantum well structure is high, and the defects are few; an electroluminescent diode is high in luminous efficiency and external quantum efficiency, good in stability and long in service life.

The invention discloses a method and system for adjusting TDD system power amplifier linear. The system comprises an expected adjusting power amplifier, a radiofrequency signal source used to input the radiofrequency signal to the expected power amplifier and a frequency spectrograph used to measure the output signal power and the ACLR value of the expected adjusting power; the system also comprises a receiving-and-sending switch control signal generator used to output the switch control signal of the simulating TDD system time slot and control the switch condition of the synchronous working of the radiofrequency signal source, the expected adjusting power and the frequency spectrograph by the switch control signal; the output end of the receiving-and-sending switch control signal generator is connected with the external trigger input interface of the radiofrequency signal source, the external trigger input interface of frequency spectrograph and the control circuit of the expected adjusting power.

The invention discloses an organic corrosion inhibitor suitable for an antifreezing solution, which comprises the following components by weight: 20-30 parts of organic acidity and its salt, 10-13 parts of amide, 6-9 parts of nitrogen heterocyclic ring, 3-5 parts of solid state alkali, 4-7 parts of organic copolymer and 5-20 parts of water. Compared with prior art, the organic corrosion inhibitor added in the antifreezing solution plays good corrosion delaying effect, stability and foaming characteristic can satisfy the requirement of real usage, and all components in a formula are nontoxic or low-toxicity components, and the components have the advantages of low cost and easy acquisition.

The invention provides a novel battery energy-storage system and a function integration designing method thereof. The system comprises an energy storage unit and an EMS (energy storage monitoring system); the energy storage unit comprises an EB (energy storage battery unit), an BMS (battery management system) and a PCS (power storage current transformer); the EB is connected with the BMS, the BMS is respectively connected with the EB and the PCS, the input end of the EMS is connected with the output end of the BMS, and the PCS and the EMS are communicated with each other. The method comprises an energy storage battery monitoring and analyzing method achieved through the BMS and the PCS and an energy-storage system monitoring and analyzing method achieved through the PCS and the EMS. In the battery energy-storage system function integration design provided by the invention, all large application occasions of electric power systems are covered, the objective is clear, and various requirements and applications are met.

The invention discloses a mouse based on fingerprint recognition and a use method of the mouse. The mouse comprises a mouse body and a matched electronic component of fingerprint identity authentication; the mouse body is provided with a data collection window and a trigger window, the mouse body is internally provided with a fingerprint information collection module, a fingerprint information processor, a trigger module and a GSM communication module; design is conducted by combining a sensor technology, a mode recognition technology, a reliability demonstration technology and a wireless communication technology and taking the computer mouse as a carrier. Accordingly, fingerprint information of a user is stored and transmitted at first, the identity of a person who puts the palm on the mouse is judged, and an unlocking operation on a computer desktop is completed according to judgment; new experience of human-computer interaction of a computer is enriched, and convenience of the mouse serving as a computer peripheral is enhanced.

The invention discloses a power network ground capacitance current detection method, comprising the steps of: installing a current type three-phase four-leg inverter bridge on a three-phase circuit; adjusting a service bridge leg to respectively inject detection current into A, B, C three phases to successively measure a neutral point offset voltage; utilizing a phase voltage, injected current and a neutral point offset voltage phasor to calculate split-phase ground capacitance; and calculating split-phase ground capacitance current according to the split-phase ground capacitance. Based on an original method, the power network ground capacitance current detection method utilizes a power electronic device to respectively add detection current with adjustable amplitudes and angles to the A, B, C three phases, measures the neutral point displacement voltages under the three conditions, and calculates split-phase ground capacitance based on a system phase voltage, thereby respectively calculating system the ground capacitance current of each phase of a system. The method has the characteristics of high accuracy, simple test and great safety, does not interrupt power supply for users, and meets actual use requirements.

The invention discloses a preparation process of a PTFE ceramic composite high-frequency copper clad laminate. 0-5% zinc oxide, 0-5% calcium oxide, etc.; Slurry formula composition: 10-40% ceramic filler; 40-60% PTFE emulsion; 0.3-3% coupling agent; 0-1 % of additives; the preparation process of PTFE ceramic composite high-frequency copper clad laminates, that is, PTFE ceramics can be obtained through processes such as pulping, glass cloth gluing, drying, slicing, sheeting, combined lamination, vacuum pressing, and cutting. Composite high frequency copper clad laminate. The preparation method of the invention can realize the high-precision dielectric constant, low dielectric loss and low water absorption rate of the dielectric constant of 3-6 series of the PTFE ceramic composite high-frequency copper clad laminate.

The invention discloses a permanent antistatic polypropylene composite material and a preparation method thereof. The composite material is prepared from raw materials containing the following components: 75-91 parts of polypropylene, 5-15 parts of a carbon / wollastonite composite material, 4-10 parts of oxidized superconducting carbon black, 1-2 parts of a silane coupling agent and 0.1-0.5 part ofan antioxidant. By compounding the superconducting carbon black and the carbon / wollastonite composite material, the scheme is achieved, polypropylene is subjected to antistatic modification, the addition amount of the superconducting carbon black can be reduced, and the influence of the carbon black on mechanical properties of the material can be reduced. The composite material prepared by usingthe method has a permanent antistatic property and can be used in multiple fields such as electronic appliance turnover boxes and new energy vehicles.

The invention discloses a special roller bearing for a single cylinder diesel. The special roller bearing comprises an outer ring, an inner ring and a plurality of cylindrical rollers arranged between the outer ring and the inner ring by virtue of a retainer, mounting cavities are arranged between the outer ring and the inner ring at two ends of the cylinder rollers, and flip angles are arranged at the four corners of each cylindrical roller. The roller bearing has the advantages that the bearing capacity is constant, the radial bearing capability is improved by more than 90%, the practical use requirement is met in the maximum range, the manufacturing cost is not increased, the use effect is good, zero fault in the three-guarantee period specified by the nation can be achieved, the service life is long, the use range is wide, good benefits are brought to factories, and more importantly, great benefits can be brought to the society.

The invention provides a drum for a cooked-rice stirring apparatus and the cooked-rice stirring apparatus. Through improvements on shapes, integrated molding for manufacturing the drum by utilizing resin is made possible, and the attachment / detachment of the drum to a main body of the apparatus and to wash the drum is made easy. According to the cylindric drum manufactured by utilizing integrated molding of resin, the drum is provided with a shaft part supported to be able to rotate around the central axis line, an opening (52) formed on a circumferential wall in order to inject and discharge steamed rice. The periphery of the opening (52) has a rib (523). A stirring member mounting part (65, 66, 67, 68) for mounting a stirring member for stirring steamed rice is formed inside.

The invention discloses a flat trailer special for harvesting machinery, comprising a frame and traveling wheels arranged at the bottom of the frame; a bottom plate, cross beam I, cross beam II, cross beam III and a horizontal cross beam are arranged on the frame, a mounting post is disposed on each cross beam, a driving mechanism is arranged on each mounting post, each driving mechanism is provided with driving gears, each of the driving gears on two sides of the frame is fitted with a driving rack, a hydraulic system is arranged at the center of the bottom of the bottom plate, and the hydraulic system is provided with a support disc through a lifting post; two sides of the bottom of the bottom plate are provided with tooth gaps in symmetric manner, a guide plate is arranged at the rear end of the frame, and the bottom of the guide plate is provided with a lifting mechanism. The flat trailer has the advantages that tilting slope of the bottom plate of the trailer can be controlled in suitable manner, loading and unloading of harvesting machinery and good stability of the loading and unloading processes can be effectively achieved, the bottom plate, the frame and the harvesting machinery are well guaranteed, and the flat trailer has good safety and high safety coefficient and meets the requirements on actual use.

The invention provides a speed reducer output shaft lengthening device which comprises a speed reducer output shaft 1, a transmission belt pulley 6 fixed to the outer side of the speed reducer output shaft 1 through a flat key 2, and a lengthening structure located on the lower face of the speed reducer output shaft 1. The lengthening structure comprises a lengthening shaft 4, two deep groove ball bearings 3 arranged outside the lengthening shaft 4 in a sleeved mode, and a sleeve 5 arranged outside the lengthening shaft 4 in a sleeved mode and located between the two deep groove ball bearings 3. The two ends of the sleeve 5 abut against the inner circles of the deep groove ball bearings 3. The lengthening structure is fixed into the lower portion of the transmission belt pulley 6 through the outer circles of the deep groove ball bearings 3. A cylindrical speed reducer support 7 is arranged outside the transmission belt pulley 6 and connected with the lower end of the lengthening shaft 4. The lengthening structure composed of the lengthening shaft 4, the sleeve 5 and the deep groove ball bearings 3 is added, and therefore the length of the speed reducer output shaft 1 is increased, the actual use requirements are met, and high cost for special customization is saved.

The invention provides a double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinder and belongs to the technical field of machinery. The double-acting hydraulic ejecting type vacuumizing and compressing device solves the problem that compressing capacity or vacuumizing capacity of an all-in-one machine of a piston type vacuum pump and a piston type air compressor cannot achieve the actual application requirements and comprises a hydraulic cylinder body and two cylinder bodies, wherein the cylinder bodies are respectively connected with two ends of the hydraulic cylinder body, a hydraulic cylinder piston is arranged in the hydraulic cylinder body, a double-extending rod with two ends respectively extending out of the hydraulic cylinder body and entering the cylinder bodies is fixed on the hydraulic cylinder piston, cylinder pistons fixed on corresponding end portions of the double-extending rod are respectively arranged in the two cylinder bodies, and an air inlet valve and an air outlet valve for communicating a cavity of the cylinder are respectively arranged on the end portions of the cylinder bodies on two sides of each cylinder piston. The double-acting hydraulic ejecting type vacuumizing and compressing device can integrate air compressing and vacuumizing, has three functions in one machine and can achieve the requirements for actual using.

The invention discloses a mouse based on fingerprint recognition and a use method of the mouse. The mouse comprises a mouse body and a matched electronic component of fingerprint identity authentication; the mouse body is provided with a data collection window and a trigger window, the mouse body is internally provided with a fingerprint information collection module, a fingerprint information processor, a trigger module and a GSM communication module; design is conducted by combining a sensor technology, a mode recognition technology, a reliability demonstration technology and a wireless communication technology and taking the computer mouse as a carrier. Accordingly, fingerprint information of a user is stored and transmitted at first, the identity of a person who puts the palm on the mouse is judged, and an unlocking operation on a computer desktop is completed according to judgment; new experience of human-computer interaction of a computer is enriched, and convenience of the mouse serving as a computer peripheral is enhanced.

The invention provides a radiating method for a variable frequency motor, and an air conditioner. The radiating method comprises the steps of determining the motor efficiency of a motor according to the frequency of the motor; determining the fan efficiency of a fan according to the frequency of the fan; and taking the frequency of the motor whose fan efficiency is not less than the motor efficiency as the operating efficiency of the motor according to the motor efficiency and the fan efficiency. The fan efficiency is not less than the motor efficiency, so that the attenuation of the heat dissipating capacity of a winding of the motor is lower than that of the heating value of the winding; therefore, it is ensured that the temperature rise of the winding of the motor satisfies the actual application requirement; and in addition, the operating frequency of the motor is determined when the motor and the fan are operating synchronously according to the motor efficiency and the fan efficiency, so that the radiating effect of the motor is effectively improved.

A self-assembled multidimensional quantum well CsPbX 3 The perovskite nanocrystal electroluminescent diode belongs to the field of nanotechnology and light-emitting display. The diode of the present invention is composed of a transparent conductive oxide anode TOC, a hole transport layer material HTL, and a multidimensional quantum well structure CsPbX 3 The nanocrystalline light-emitting layer EL, the electron transport layer material ETL and the metal cathode CL are composed. The present invention first adopts the chemical synthesis method to prepare the self-assembled multidimensional quantum well CsPbX 3 Nanocrystalline solution, and then spin-coat the hole transport layer materials HTL, CsPbX on the TOC by spin-coating technology 3 Self-assembled multi-dimensional quantum well nanocrystalline solution, electron transport layer material ETL, and finally deposited metal cathode CL on the ETL by vacuum evaporation technology. The present invention can control the self-assembled multidimensional quantum well CsPbX 3 The dimension and composition of nanocrystals can realize any emission spectrum in the range of 400-700 nanometers visible light emission; and the multidimensional quantum well structure CsPbX 3 Nanocrystals have high fluorescence quantum yield and few defects; electroluminescent diodes have high luminous efficiency and external quantum efficiency, good stability and long life.

A medical image deep learning method with interpretability comprises the following steps: 1) acquiring an original medical image, performing image enhancement on the original medical image, increasing the number of the images, and inputting the images as input images into a network; 2) extracting image features of the input image by using a VGG-16 network to obtain a medical predictive map conforming to intermediate clinical features; 3) comparing the obtained prediction map with a standard intermediate clinical feature, calculating the cross entropy loss Lossx, y of the two, and adjusting VGG-16 network parameters to make the calculated cross entropy loss smaller than a set threshold so as to complete network learning and make the prediction map obtained by the VGG-16 network accord with the requirement of a comparison result. The network obtained through the method has better detection precision and better interpretability, and subsequent network optimization can be conveniently carried out according to requirements.

The invention discloses a platform trailer special for harvesting machines. The platform trailer comprises a trailer framework and traveling wheels arranged at the bottom of the trailer framework. The trailer framework is provided with a trailer bottom plate, a first cross beam, a second cross beam, a third cross beam and a horizontal cross beam; the cross beams are all provided with placing columns which are provided with driving mechanisms; driving gears are arranged on the driving mechanisms; and driving racks are arranged on the driving gears on the two sides of the trailer framework. A hydraulic system is arranged in the middle of the bottom of the trailer bottom plate and is provided with a supporting disc through lifting columns; gear openings are formed in the two sides of the bottom of the trailer bottom plate symmetrically; guide plates are arranged at the rear end of the trailer framework; and lifting mechanisms are arranged at the bottoms of the guide plates. According to the platform trailer, the tilting slope of the trailer bottom plate of the trailer can be controlled properly, so that the harvesting machines are effectively loaded and unloaded, and the stability in the loading and unloading process is maintained; and the trailer bottom plate, the trailer framework and the harvesting machines are well guaranteed, good safety performance and a high safety coefficient are achieved, and practical use demands are met.

The invention discloses a Gaussian estimation-based online catering main tag data quick extraction method. The method comprises the following steps of 1) obtaining store tag data and user score and review data, and preprocessing the store tag data; 2) for each user, calculating a mean value and a variance of Gaussian distribution of a score data set of each tag, namely, score Gaussian distribution of the user under the tag; 3) for each user, performing standardization processing on each tag score of a store each time and the score Gaussian distribution of the tag, and calculating maximum likelihood estimation as a target tag of the user going to the store at that time; and 4) testing an estimation tag, an actual complete tag and the review data, and taking a relative deviation of a matching rate of the tag and the review data as a final evaluation score of a model. According to the method, a maximum likelihood taste tag under the Gaussian distribution is extracted as a mainly selected taste tag of a dining behavior of the user; and the method is relatively high in extraction precision and relatively low in algorithm complexity, and is suitable for actual application scenes.

The invention provides a radiating method for a variable frequency motor, and an air conditioner. The radiating method comprises the steps of determining the motor efficiency of a motor according to the frequency of the motor; determining the fan efficiency of a fan according to the frequency of the fan; and taking the frequency of the motor whose fan efficiency is not less than the motor efficiency as the operating efficiency of the motor according to the motor efficiency and the fan efficiency. The fan efficiency is not less than the motor efficiency, so that the attenuation of the heat dissipating capacity of a winding of the motor is lower than that of the heating value of the winding; therefore, it is ensured that the temperature rise of the winding of the motor satisfies the actual application requirement; and in addition, the operating frequency of the motor is determined when the motor and the fan are operating synchronously according to the motor efficiency and the fan efficiency, so that the radiating effect of the motor is effectively improved.

The invention relates to a target film flattening device for nuclear physics in-beam experiments, which includes a support frame and a target film fixing device arranged above the support frame. The target film fixing device is connected with the support frame through the connecting piece, the target film is set at the center of the target film fixing device, and the connecting piece is adjusted, the frustum of the supporting frame can move upward through the adjustment of the connecting piece, from the center of the target film fixing device Push out to achieve flattening of the target membrane. The invention also relates to a method for flattening a target film by using the flattening device, including a film pressing method, a film pasting method, a pushback method and a sputtering method. Adopting the flattening device of the present invention has simple structure, easy installation and good flattening effect; adopting the method of the present invention, different methods can be adopted according to different target materials, and the use is flexible.