54results about How to "In line with the actual application" patented technology

The invention relates to a sound source localizing method. The method comprises the following steps of: establishing an aliasing model of sound source signals; collecting a mixed acoustic signal of a sound source to be tested in the three directions of X, Y and Z by adopting a three-dimensional acoustic measurement array; acquiring a clean observation signal through denoising treatment; estimating a separating matrix of the tested sound source and acquiring a frequency response matrix; once acquiring the accurate estimation of the wave arrival directions of all the sound source signals by adopting a whole wave arrival direction estimation strategy based on peak detection; calculating space angles by utilizing relative space geometric knowledge; and finally, realizing the space localization of the sound source signals. The invention overcomes the defect that a traditional sound source localizing method can not realize the three-dimensional space localization of a plurality of aliasing sound sources and has the problems of inflexible use, unstable estimation result, lower accuracy, poor practicability, and the like.

The invention discloses a V2V mode multi-task unloading method and system based on mobile edge computing. The V2V mode multi-task unloading method comprises the steps that a vehicle system network isconstructed; according to a multi-hop V2V link indicator model in a vehicle system network, a vehicle user acquires a V2V reliable link during data transmission; the vehicle user sends a task unloading request to an MEC server to which the RSU of the road section where the vehicle user is located belongs according to the V2V reliable link, and the MEC server solves an optimal multi-task unloadingstrategy by utilizing a task unloading overhead model meeting time delay; and the MEC server sends the optimal multi-task unloading strategy to an RSU, the RSU sends the optimal multi-task unloading strategy to a vehicle user, and the vehicle user unloads a corresponding task according to the optimal multi-task unloading strategy. The task calculation cost is reduced to the maximum extent, the Internet of Vehicles service performance is improved, and the whole process is standard and easy to operate.

The invention discloses an optimization method for improving the regenerative braking energy utilization rate of a subway train, which comprises the following steps of: 1, equivalently expressing theregenerative braking energy utilization rate according to the traction and braking overlapping time of adjacent trains in a same power supply interval; 2, establishing a homodromous train tracking operation integer programming model; Step 3, establishing an integer programming model for tracking operation of the opposite train; And step 4, solving the train tracking operation integer programming model by adopting an improved differential evolution algorithm to obtain an optimized train departure interval, stop time and opposite opening time. The method is applied to the rush hours in the morning and evening and non-rush hours; Train operation traction and braking overlapping time maximization is taken as a target. A train tracking operation optimization model is established, the train departure interval, the stop time and the opposite opening time are optimized through an improved differential evolution algorithm, the traction and braking overlapping time of adjacent trains or oppositetrains is increased, the utilization rate of regenerated energy is increased, and the total energy consumption of the system is reduced.

The invention discloses an estimation method for a biological tissue two-dimensional displacement field in ultrasonic elastography. The estimation method comprises the following steps of: (1) acquiring an ultrasonic image and estimating a longitudinal displacement component; (2) establishing a system discrete equation through a biological tissue mechanical model; and (3) estimating the biological tissue two-dimensional displacement field through H-infinity filtering. The estimation method for the two-dimensional displacement field disclosed by the invention obtains the optimal estimation for the displacement field by using a conventionally obtained longitudinal displacement measured value through an H-infinity filtering algorithm under the restriction of the biological mechanical model, so that the estimation method restores a high-quality lateral displacement component simultaneously when effectively filtering out the noise inside and outside the system, and is used for strain calculation and the reconstruction of elastic parameters; and compared with conventional methods, the estimation method disclosed by the invention can play a very effective role in the estimation for lateral displacement in the ultrasonic elastography.

The invention discloses a health condition analysis method for a hard disk. The method comprises the steps of obtaining attribute information of the hard disk, and recording abrasion parameters in the hard disk operation process; according to the abrasion parameters and a pre-configured abrasion model, obtaining the abrasion loss of the hard disk; according to the attribute information, the abrasion parameters and the abrasion loss, building a life model for analysis to obtain the health condition of the hard disk. The invention further discloses a health condition analysis device for the hard disk. Information of multiple aspects is combined, on the basis of use habits of a user, the health condition of the hard disk is comprehensively analyzed, the analysis result is displayed to the user in an easily-understood mode, and reliability and usability are achieved.

The invention provides a method for determining the applicable area of a fresh air purifier based on purification performance. The method comprises the following steps: S1, a fresh air purifier performance test system capable of providing a micro-positive pressure test environment is adopted for testing the purification performance index of a fresh air purifier, a background pollutant is introduced into a test simulation cabin in which the fresh air purifier is placed, a target pollutant is stably generated at a fresh air inlet outside the cabin, and concentrations corresponding to a pluralityof time points between the initial concentration and the final concentration are measured; and S2, a pollutant diffusion transmission process model is established based on mass conservation of pollutants in the cabin, the purification performance index is calculated according to a test result, and the applicable area of the fresh air purifier under a set air volume condition or a set working condition is deduced according to the purification performance index. According to the method, calculation formulas under various pollutant conditions are provided, the final applicable area is comprehensively considered according to calculation results under all the conditions, and the problem that the applicable area can only be obtained through simple estimation at present is solved.

The invention discloses a regional water pollution comprehensive evaluation and optimization method based on an entropy weight fuzzy matter element method. A quantification method is adopted for constructing a comprehensive evaluation model of a regional water pollution emission source, and a linear programming model with optimal regional water environment comprehensive effects is established according to the comprehensive evaluation result. The method comprises the steps of establishing a fuzzy matter element model, performing weight calculation through an entropy weight method, determining a regional major emission source and establishing a regional emission source optimization model. According to the method disclosed by the invention, a matter element theory is used as an evaluation tool for the water pollution emission source, and good evaluation of the water pollution emission source is further realized. The objectivity in comprehensive evaluation of the water pollution emission source is realized: system optimization is performed on the basis of comprehensive evaluation, the comprehensiveness of a system is considered to the greatest extent, and the optimization result is more in line with the practical application situation. The established evaluation decision-making method is clear and visual in concept; and furthermore, the calculation process is simple, and computer programming calculation is easy to realize.

The invention provides a small current grounding fault processing method with a line selection device and a protection recloser cooperated and belongs to the field of power system relay protection. The method is characterized by including the following steps that a, fault lines are judged; b, a tripping instruction is sent in a delayed mode; c, whether faults exist or not is judged, the step d is executed if the faults exist, and the step f is executed if the faults disappear; d-e, the fault lines are reclosed; f, whether the faults reappear or not is judged, the step g is executed if the faults do not reappear, and the step h is executed if the faults reappear; g, the fault lines are restored to normal power supply; h, the tripping instruction and a recloser locking instruction are sent. By means of the small current grounding fault processing method with the line selection device and the protection recloser cooperated, fault lines which are wrongly judged and can be self-cured through tripping arc blowout are subjected to power supply again after being tripped and the fault lines with faults incapable of disappearing by themselves are isolated through the line selection device, so that power supply reliability is greatly improved.

In the method positioning is carried on by applying prebalance to error matrix and combining with at least square method according to feature of balanced error matrix covariance matrix being approximately to unit array in order to raise accuracy of positioning; the processed error model includes both of array element position error and estimation error of distance difference which is not the same to each other so it is more is accordance with actual situation comparing to existed positioning method.

The invention relates to an interaction method and device of an augmented reality device, a storage medium and a program product. The method comprises the steps of receiving settings for one or more service modules, including receiving settings for one or more associated devices and / or associated network environments of the service modules, and setting one or more associated programs of the service modules; acquiring a signal transmitted by equipment around the augmented reality equipment, and / or acquiring a signal of a network environment around the augmented reality equipment; and if the equipment conforming to the setting of the associated equipment is detected and / or the network environment conforming to the setting of the associated network environment is detected, starting a corresponding service module, and executing a program corresponding to the service module according to the setting of the associated program. By utilizing the method and the device, the service module for thescene can be automatically opened or switched in the scene meeting the condition, so that the equipment intelligence is improved, and better scene enhancement experience and artificial intelligence experience are brought to a user.

The invention discloses an automatic temperature-regulating aconite cake-separated moxibustion device, wherein the device comprises a base, an upper cover and a sliding sleeve; the sliding sleeve is internally provided with a moxa cone, and an aconite cake is nested at the lower port of the base. A heat insulating sheet provided with a heat conduction middle hole is arranged above the aconite cake; a bimetallic sheet is arranged above the insulating sheet, and the insulating sheet is provided with a door element that opens or closes the heat conduction middle hole; the bottom surface of a bottom box composed of a sliding sleeve metal net is supported on a passive layer of the bimetallic sheet; the side wall of the bottom box is in nested fit with an inner cavity of an upper port of the base; external ventilation holes are arranged on the side wall of the upper cover, and internal ventilation holes are arranged on the side wall of the sliding sleeve correspondingly. The action of a quadruple temperature regulating mechanism is activated by deformation of the bimetallic sheet. The temperature regulation process of the device is fully automatically completed without manual intervention and moving of the device, and the continuity of aconite cake-separated moxibustion treatment is ensured; the compounding of the quadruple temperature regulation mechanism has strong and reliable temperature regulation ability so as to ensure that a human body cannot be scalded; the device is simple and compact in structure, small in size, easy to carry and use, convenient to use, and convenientto promote and use.

The invention discloses a dark current correction method for a CMOS image sensor, and the method comprises the following steps: S01, enabling the CMOS image sensor to be placed in an all-black environment, setting different exposure conditions, and obtaining a dark current pixel value of a corresponding image; taking one pixel point in the pixel array as a reference point, calculating the proportion of the rest pixel points in the pixel array relative to the dark current pixel value of the reference point, and marking the corresponding proportion in the image to form a dark current network; S02, performing coarse correction on pixel points in the effective pixel array by adopting AFB in an analog signal processing module; and S03, calculating a dark current correction value AFB' of each pixel point in the effective pixel array through a digital algorithm in the dark current network, and performing accurate correction on the pixel value of the effective pixel array by adopting the AFB 'in the digital signal processing module. According to the dark current correction method of the CMOS image sensor, the dark current correction precision is high, and the correction result better conforms to the actual application situation.

The invention discloses a control method, a device, a storage medium and an electronic device for popularizing information broadcasting. The method comprises the following steps of: acquiring the history online consumption data and the history online exposure probability of the target promotion information in a preset time; generating a current estimated consumption speed according to the historical online consumption data and the historical online exposure probability; and generating a current exposure probability of the target promotion information according to the current estimated consumption speed and the expected consumption data in the next unit time of the target promotion information; controlling the playback of the target promotion information according to the current exposure probability. Thus, that embodiment of the invention calculating a new consumption speed according to the history online exposure probability and historical on-line consumption data generated on line inreal time, so that the obtained new consumption speed is more in line with the actual application situation, and the accuracy is improved. Further, the control of the playing speed of the promotion information according to the new consumption speed can improve the accuracy of the control of the over-limit of the promotion information.

The invention discloses a lithium battery capacity integrated prediction method based on dynamic time-varying weight. The method comprises the following steps: dividing lithium battery degradation data into a training data set, a verification data set and a test data set; selecting a plurality of primitive algorithms, and training each primitive algorithm by utilizing the training data set; basedon each trained primitive algorithm prediction model, carrying out the prediction in the verification interval, and calculating a prediction relative error; calculating the prediction algorithm weightof each primitive according to the prediction relative error of the verification interval; performing complementary prediction on the prediction relative error in the test interval; calculating a prediction average value of the prediction relative error in the test interval as a time-varying weight induction factor; training each primitive prediction algorithm by using the training data set and the verification data set; employing the trained primitive algorithm for prediction in a test interval; realizing the real-time weight allocation on the basis of V-IOWA; multiplying and summing the prediction result of each primitive algorithm and the corresponding weight of each moment to obtain a final integrated prediction result.

The invention discloses a load electromagnetic compatibility prediction method for small satellite communication. The method can analyze the mutual coupling situations among multiple load systems by adopting an antenna model and a load system multiport network, and can calculate the isolation among the systems by converting the multiport network into a single port equivalent analysis model, so that bases can be provided for the reasonable distribution of system indexes; and enough isolation can exist between transmit-receive systems during practical application, so that high power data transmission signals or bottom noise thereof can be prevented from entering a measurement and control receiving system due to insufficient isolation, and therefore, situations of receiving saturation or great reduction of receiving sensitivity can be avoided.

The invention relates to an attitude control method for an underactuated spacecraft actively assisted by a light pressure torque. The method comprises the following steps of taking the spacecraft witha flywheel and two pairs of solar panels as an object, and firstly establishing a kinetic model of a flexible spacecraft with a flexible attachment and a attitude kinematics equation of the spacecraft; establishing a simplified analytical model of a solar pressure torque; designing a linear quadratic optimal controller to obtain a three-axis desired torque, analyzing characteristics of the solarpressure torque, and distributing the three-axis torque to the solar pressure torque and a flywheel torque; under the assumption that the surface characteristics of the panels are constant, solving aninverse solution according to the simplified solar pressure torque model of the panels to directly obtain a corner steering law of the solar panels; and obtaining a corner steering law of the solar panels based on numerical optimization by solving constrained nonlinear programming problems. The attitude control method provided by the invention can effectively improve the controllability of the attitude and improve the control performance, and is more suitable for the engineering practice by adopting a control scheme in which the steering law and the control law are separated.

The embodiment of the invention provides a force calculation method and device for a driving belt in a driving component with an asymmetrical structure. The force calculation method includes the following steps that actual pre-tightening force of the driving belt is detected; according to the maximum tangential force and actual pre-tightening force of the driving belt and a correction coefficientdetermined through finite element simulation analysis, the actual loose edge force and / or the actual tight edge force of the driving belt are / is calculated. According to the method and the device, thedriving-belt load calculation is corrected, the fatigue load of the driving belt can be more accurately calculated, a belt pulley support structure in a fan is thus more accurately evaluated, and themethod and the device have certain referential significance in the strength evaluation of a similar belt driving structure in the engineering practice.

The invention designs a three-connecting-rod type marine self-grabbing and releasing mechanical arm device capable of actively controlling constant tension. The device mainly comprises a base, a balance platform, a left balance arm, a right balance arm, a tension sensor, a first connecting rod, a second connecting rod, a third connecting rod, a left auxiliary balance arm, a right auxiliary balancearm, a main sling, a left balance cable, a right balance cable, a left auxiliary balance cable, a right auxiliary balance cable, a visual sensor, a lifting ring, a grab hook and a PLC control box. Four balance cables are adopted, active constant tension control is achieved through a PLC, and automatic grabbing, collecting and releasing functions are achieved through the grab hook of the visual sensor. The device has the advantages that a multi-degree-of-freedom three-connecting-rod type mechanical arm is used, and the grabbing range is enlarged. Meanwhile, the influence of marine environmental factor interference force on the main sling, the grab hook and the hoisted object is considered. The four balance cables are adopted, so that the stabilization effect is improved. The visual sensoris applied, the marine mechanical arm can automatically grab, collect and release the hoisted object, and compared with a manually-operated marine crane, the device is more intelligent and suitable for various carriers.

The invention relates to an experiment device used for measuring heat pipe heat conductivity coefficient. The experiment device used for measuring heat pipe heat conductivity coefficient comprises a hot water loop I, a cool water loop II, a hot water tank 5 connected with the hot water loop I via a pipeline, and a cool water tank 10 connected with the cool water loop II via a pipeline; a hot end and a cold end of a hot pipe 7 are inserted into the hot water tank 5 and the cool water tank 10 respectively; the cool water tank 10 and the hot water tank 5 are movable, so that the horizontal distance from the cool water tank to the hot water tank can be adjusted; the hot water loop I comprises a hot water boiler 1, a heat exchanger 2, a variable frequency pump 26, and a water inlet valve 3, a flowmeter 24, and a water return valve 25 which are arranged on a pipeline communicated with the hot water tank 5; the cool water loop II comprises a refrigerating machine 14 and a variable frequency pump 16; a water inlet valve 13 is arranged on a pipeline used for communicating the outlet of the refrigerating machine 14 with the cool water tank 10; and a variable frequency pump 16, a flowmeter 18, and a water return valve 17 are arranged on a pipeline used for communicating the inlet of the refrigerating machine 14 with the bottom of the cool water tank.

The invention relates to a network authentication method and device, computer equipment and a storage medium. The method comprises the following steps: monitoring a communication state of a communication link between a base station and a server; if the communication state is abnormal, executing authentication operation, wherein the authentication operation comprises the steps that an authentication parameter with the highest preset priority is selected from an authentication parameter set, and network authentication is conducted on a communication link between the base station and the server;and if the authentication is not successful, the priority of each authentication parameter is updated in the authentication parameter set, and the authentication operation is continued to execute based on the updated priority of each authentication parameter in the authentication parameter set until the authentication is successful. According to the authentication method, an automatic authentication process is realized, and compared with an existing network authentication method needing manual intervention for manual operation, the network authentication method provided by the invention greatly shortens the link recovery time of network interruption between the base station and the server, so that the stability of network operation is ensured.

The invention discloses a self-service terminal with sterilizing and electricity-saving functions, and aims to solve the problems that in the prior art, the sterilizing effect is difficult to ensure, terminal electronic devices are possibly damaged, the human resource cost is high, and electricity is wasted. In the self-service terminal, disinfection spraying equipment comprises a liquid medicine box, an atomizer and a corresponding atomizing nozzle, an input pipeline of the atomizer is connected with the liquid medicine box, the atomizer is used for atomizing disinfection liquid medicine into small molecules, an output pipeline of the atomizer is connected to the atomizing nozzle, the atomizing nozzle is fixed to the top of a shell of the self-service terminal, and the spraying direction of the atomizing nozzles tends to a screen area and a keyboard area below; and the input end and the output end of an energy-saving control unit are respectively connected with an infrared sensor and the self-service terminal host, the infrared sensor utilizes the principle that infrared light diffusely reflects an object, and when a person enters or leaves the sensing range in front of the infrared sensor, the infrared sensor immediately responds and outputs to the energy-saving control unit.

The invention discloses a cable fault detection waveform adaptive optimization method and system, and the method comprises the following steps: obtaining a diagnosis waveform of a cable to be subjected to fault detection, and carrying out the one-layer wavelet decomposition to obtain a first-layer detail coefficient; selecting the wavelet basis with the maximum peak-effect ratio as the optimal wavelet basis; performing K-layer wavelet decomposition on the diagnosis waveform; according to the detail coefficient of the Kth layer, detail energy is obtained through calculation, the detail energy of the Kth layer and the detail energy of the (K-1) th layer are quotient, and the maximum quotient value is taken as the critical layer number; comparing the detail energy of the previous layer or the previous two layers of the critical layer number, and taking the larger value as the optimal wavelet layer number; and performing wavelet threshold de-noising processing on the diagnosis waveform to obtain a self-adaptive optimization result. According to the method, the technical problem that a plurality of fault points are difficult to distinguish due to interference points can be solved.

The invention relates to a road interface characteristic testing device, which is used for testing the interface characteristic between different structural layers of a pavement, wherein the structural layer of the pavement comprises at least a first structural layer arranged on the surface of the pavement and a second structural layer arranged below the first structural layer, and is characterized in that: the testing device comprises a normal force loading unit, which is arranged on the first structural layer, and applies a normal force perpendicular to the pavement of the first structural layer; a tangential force loading unit, which is provided with one side of the first structural layer and / or the normal force loading unit, and applies the tangential force parallel to the pavement ofthe first structural layer and / or the normal force loading unit; a acquisition unit , which is used for detecting the force applied by the normal force loading unit and the tangential force loading unit, and the strain generated by the normal force loading unit and / or the first structural layer; and a calculation unit, which is used for acquiring interface characteristic parameters representing the interface characteristics of the first structural layer and the second structural layer according to the acquired data analysis of the acquisition unit.

The invention relates to a method and structure for installing a pyramid wave-absorbing material at a wall internal corner. The installing method includes the steps that the angle theta of the indoor wall internal corner is measured, two identical pyramid wave-absorbing material pieces are taken, the sides, needing to be spliced, of the two pyramid wave-absorbing material pieces are cut at the cutting angle of 90-1 / 2*theta, the cutting surfaces of the two cut pyramid wave-absorbing material pieces are spliced, and the two cut pyramid wave-absorbing material pieces are pasted on the two sides of the wall internal corner. According to the installing structure, the two identical pyramid wave-absorbing material pieces comprise the cutting surfaces with the angle of 1 / 2*theta, and the two pyramid wave-absorbing material pieces with the cutting surfaces spliced are pasted on the two sides of the wall internal corner, wherein theta is the angle of the wall internal corner. The method and the structure solve the problem that a pyramid wave-absorbing material cannot be effectively installed at a wall internal corner, and the electrical property of a microwave chamber is improved.