29results about How to "Efficiency advantage" patented technology

The invention discloses an intelligent robot construction technology and system for building surface treatment, and relates to the technical field of building construction.The technology comprises the following specific processes that three-dimensional contour data collection is conducted, specifically, a building surface is comprehensively scanned through high-precision three-dimensional laser scanning equipment, and space coordinate information of all points on the surface of the building surface is obtained; by integrating three-dimensional laser scanning, image processing and spray gun and polishing control, full-process automatic operation from putty spraying, polishing to paint spraying is achieved, the construction period is greatly shortened, the efficiency advantage is particularly remarkable for large-area or complex-shape building surface treatment, and meanwhile, the construction efficiency is greatly improved. Due to the fact that the robot can work strictly according to the preset program and path and conduct accurate adjustment in combination with real-time feedback data, high consistency and uniformity of construction quality are ensured, and the problems of spraying omission, repeated spraying or uneven grinding and the like possibly occurring in manual construction are effectively avoided.

The invention provides a circuit test system and method and related equipment, and the test system comprises a test mold, electronic test equipment and computing equipment, can test a plurality of circuit parameters in parallel, can complete a large number of tests in a short time for circuit boards produced in batches, can run according to a preset program, and is high in test efficiency. The test result is more accurate and stable, a high-precision test instrument can be equipped, tiny voltage and current changes can be accurately measured, the device has the characteristics of high efficiency and stability, the test cost can be reduced, defective circuit boards can be found and removed in time, defective products are prevented from flowing into the next process, the defective products are prevented from flowing out, and the rework cost is reduced. The test data can be automatically recorded and stored, subsequent data analysis and quality tracing are facilitated, and the test system has obvious advantages in the aspects of efficiency, precision, cost, data management, repeatability and the like and is suitable for large-scale and high-precision circuit board production requirements.

The invention discloses a mushroom yield estimation method based on three-dimensional reconstruction lossless phenotype parameter extraction, belongs to the technical field of agricultural informatization and intelligentization, and solves the problem of low mushroom yield estimation accuracy. The method comprises the following steps: performing point cloud three-dimensional reconstruction on shiitake mushrooms by using a region of interest to generate dense point cloud data; preprocessing the dense point cloud data; based on an improved CP-PointNet + + model and a clustering algorithm, segmenting mushroom point cloud, extracting multi-dimensional key phenotypic parameters of pileus diameter, thickness and stipe height, and covering main features of mushroom phenotypic information; the improved PointNet + + network comprises the following steps: adding a CBAM module to an MLP layer of the PointNet + + network, and replacing common convolution with partial convolution PConv; and taking the phenotypic parameters of the shiitake mushrooms as input variables of the neural network model, and predicting the shiitake mushroom yield. The method is suitable for phenotypic character analysis and breeding research of edible mushrooms such as shiitake mushrooms and the like.

The invention provides a process for preparing lanthanum oxide by recovering lanthanum samarium slag through a nitrogen vortex separation method, which comprises the following steps: S1, distilling the lanthanum samarium slag through lanthanum thermal reaction, and then cutting into blocks for crushing; s2, the diced lanthanum samarium slag is put into a vertical compound crusher to be crushed; s3, separating metal lanthanum and samarium particles from the crushed particles through a particle winnowing machine; s4, performing precise winnowing on the lanthanum oxide and samarium oxide mixed powder to separate samarium oxide; s5, mixing the samarium oxide enrichment with a new material, and performing lanthanum thermal reaction distillation again; s6, the crushed lanthanum samarium powder is filled with nitrogen in a spiral separation powder stacking machine, and lanthanum powder is separated through vortexes; s7, the remaining lanthanum samarium powder is subjected to high-flow-rate separation, and after lanthanum powder is separated out, the lanthanum powder is returned to samarium oxide reduction production; and S8, the content of samarium in the recovered lanthanum powder is lower than 1%, and the recovered lanthanum powder can be used for lanthanum oxide electrolytic reduction to produce metal lanthanum. The method solves the problems of treatment and recovery of the lanthanum samarium slag, and has remarkable advantages in the aspects of environmental protection, cost, efficiency, product quality and the like.

The utility model discloses a waste photovoltaic panel glass dismantling device which comprises a working table and supporting legs arranged at the four corners of the lower side of the working table, a conveying belt is arranged in the middle of the upper side of the working table, sliding rails are arranged in the two sides of the middle of the working table respectively, and the sliding rails are arranged in the middle of the working table. Connecting blocks are arranged on the inner sides of the sliding rails, a device frame is arranged in the middles of the upper sides of the two connecting blocks, fixing plates are arranged on the outer portions of the left side and the right side of the device frame correspondingly, spring sleeve rods are arranged on the lower sides of the fixing plates, and pressing rods are arranged on the lower sides of the spring sleeve rods. By means of the arrangement of the abutting block and the sliding groove, the photovoltaic panel can move towards the right side more stably after being cut, fragmentation is prevented, smooth proceeding of the disassembling process is guaranteed, the laser heater is used for replacing a traditional heat conduction oil heating plate, the photovoltaic panel can be heated more efficiently, the disassembling efficiency is improved, and time and energy cost are saved.

The application discloses a SOFC integrated power generation system containing a diesel pretreatment unit, and belongs to the technical field of solid oxide fuel cells. The SOFC integrated power generation system at least comprises a diesel pretreatment unit, a SOFC power generation unit and an intelligent control system. The pretreatment unit converts diesel into high-purity hydrogen-rich gas through desulfurization, denitrification and autothermal reforming processes. The SOFC power generation unit adopts a metal support type stack and realizes efficient power generation in combination with heat management. The intelligent control system can realize real-time monitoring and dynamic adjustment to ensure stable operation of the system. The power generation efficiency of the SOFC integrated power generation system can reach 55% to 58%, the fuel utilization rate reaches more than 90%, and the emission is low. The SOFC integrated power generation system is suitable for distributed power generation, mobile power sources, emergency power sources and automobile fuel cells and the like application scenarios, and has the characteristics of high efficiency, environmental protection and stability.

The invention provides a mobile robot path planning method based on a dynamic information entropy ant colony optimization algorithm. The mobile robot path planning method comprises the following steps: S1, environment modeling: setting a starting point and an ending point of a robot and a position of an obstacle; s2, setting initial parameters of an ant algorithm; s3, performing non-uniform pheromone initialization: performing non-uniform initialization on the pheromone according to the obstacle distance, for each non-obstacle node (i, j), calculating the Euclidean distance minDist from the non-obstacle node (i, j) to the nearest obstacle, and calculating and initializing the pheromone concentration tauij; and S4, constructing a path. According to the invention, through a non-uniform pheromone initialization method based on the obstacle distance, ants are guided to preferentially select nodes far away from the obstacle, the death rate of the ants is reduced, and the diversity and efficiency of initial path search are improved; according to the method, a dynamic pheromone updating strategy based on information entropy and a self-adaptive pheromone volatilization mode are utilized, the search process is flexibly controlled, the convergence speed and the exploration capability of the algorithm are balanced, and the global search capability and efficiency of the algorithm are improved.

The invention discloses a self-propelled soil cleaning machine for Larsen steel sheet pile grooves. The machine comprises a steel pipe frame, a gasoline engine, a gear box, a soil cutting disc, a scraper plate, a running wheel, and a strong magnet. The gasoline engine is arranged at the rear of the steel pipe frame, the gear box is arranged at the front of the steel pipe frame, the output shaft of the gasoline engine is connected to the input shaft of the gear box, the front and rear ends of the output shaft of the gasoline engine are rotatably connected to the steel pipe frame through a positioning block respectively, the soil cutting disc is connected to the output shaft of the gear box, the scraper plate is arranged behind the soil cutting disc and connected to the steel pipe frame, the cross-sectional shape of the scraper plate is consistent with the cross-sectional shape of the steel sheet pile, the middle and rear parts of the scraper plate are curved in an arc shape and the concave arc surface faces forward, two running wheels are arranged on both sides of the bottom of the steel pipe frame, a guide limit block is connected to the outer side of each running wheel, a plurality of strong magnets are connected to the bottom of the steel pipe frame, and a tail hook for connecting a pull rope is arranged at the rear end of the steel pipe frame.

This utility model discloses a rotating device for cable winding, belonging to the field of cable processing technology. It includes two sets of parallel and symmetrically arranged supporting rotating mechanisms and a winding reel. The housing of each supporting rotating mechanism contains two sets of supporting rollers that can move axially. The sidewall flange of the winding reel is rotatably connected to the outer walls of the two sets of supporting rollers. At opposite ends of the two sets of supporting rotating mechanisms, two sets of clamping rotating mechanisms are respectively arranged. Each clamping rotating mechanism includes a height-adjustable movable base and a clamping drive assembly installed at the telescopic end of the movable base. The movable base can drive the limiting guide post of the clamping drive assembly to engage with the connecting plate, thereby causing the clamping drive assembly to drive the winding reel to rotate synchronously. This utility model uses two sets of supporting rotating mechanisms installed on the ground to support the cable winding reel, making the winding reel more stable and simplifying the installation and disassembly process, thus improving operational convenience.

The invention discloses a container scheduling module based on a user-defined index configuration file, which comprises an analysis module, an index acquisition module, a scheduling algorithm module, a data information file and a configuration file, and is characterized in that the analysis module analyzes the configuration file to obtain user-defined index related information; the index acquisition module acquires corresponding numerical values according to the self-defined index and the built-in scheduling index and generates a data information file; the scheduling algorithm module obtains built-in scheduling indexes and a scoring algorithm rule of each index, obtains a final scheduling index and a corresponding scheduling algorithm rule in combination with a self-defined scheduling index provided by the analysis module and the corresponding scoring algorithm rule, and then analyzes a data information file of each node; the analyzed data is substituted into a final scheduling index and a corresponding scheduling algorithm rule, the score value of each node in the cluster is calculated, the node scores are sorted, finally, the node with the highest score is selected, and the container is scheduled to the node with the highest score to complete the scheduling process.

The invention discloses a high-efficiency stripe coding and decoding method and device, electronic equipment and a storage medium. The method comprises the following steps: generating a coding stripe sequence according to stripe parameters; generating a reference phase for intermediate-frequency phase unwrapping according to the calibration parameters; acquiring image information with a coded stripe sequence, and calculating a wrapped phase and a space-variant phase shift according to the image information; recovering the space-variant phase shift into an intermediate-frequency wrapped phase according to the reference phase; and performing phase unwrapping on the intermediate frequency wrapped phase according to the reference phase, and obtaining a final unwrapped phase for three-dimensional calculation. According to the invention, the intermediate-frequency phase is embedded into stripe coding in the form of cyclic space-variant phase shift, the high-frequency phase and the intermediate-frequency phase can be obtained at the same time without using additional stripes, the intermediate-frequency wrapped phase is unwrapped by using the pre-calculated reference phase plane, the high-frequency wrapped phase is further unwrapped, and the high-frequency wrapped phase is further unwrapped. The problem that when a traditional method is used for high-frequency fringe analysis, the phase amplification factor is too high, and consequently phase unwrapping is unstable is effectively solved.

The utility model relates to a tire distribution type inflation and deflation system, belongs to the technical field of automobile tire inflation pumps, and solves the problems that in the prior art, an inflation and deflation system is high in cost due to a complex air path, maintenance and replacement are convenient, and trafficability and economical efficiency are difficult to balance when power supply of an inflation and deflation control system and all tires are driven and braked. The integrated modular design is adopted, the tire inflation and deflation system is embedded in the hub motor, the system comprises the cylindrical cavity and the space separation compression unit, and the space separation compression unit is arranged in the cylindrical cavity and can rotate in the cylindrical cavity. And the cylindrical cavity is divided into a plurality of pump cavities with different volumes by the space division compression units, and the volumes of the divided pump cavities can be changed in the rotating process, so that air in the divided pump cavities is compressed. The system further comprises an electric brush ring and a balance control method, and the electric brush ring leads a power supply of the hub motor to the system so as to supply power to the system.

The application discloses a composite diaphragm for lithium ion batteries, a preparation method of the composite diaphragm and a lithium ion battery. The composite diaphragm comprises a porous base diaphragm, a first microcapsule coating layer coated on a first surface of the porous base diaphragm and a second microcapsule coating layer coated on a second surface of the porous base diaphragm. The first microcapsule is composed of a lithium source compound core material and a polymer wall material coated outside the lithium source compound core material, and the second microcapsule is composed of a lithium-poor active material core material and a polymer wall material coated outside the lithium-poor active material core material. The softening temperature of the polymer wall material is in the range of 90 DEG C to 230 DEG C. When the temperature of the battery reaches a set trigger temperature, the lithium source compound on the first surface side releases lithium to be inserted into a delithiated positive electrode to reduce the positive electrode potential, and the lithium-poor active material on the second surface side releases lithium to be inserted into a lithium-inserted negative electrode to increase the negative electrode potential, so that the battery state of charge is reduced, and chemical intervention is completed before thermal runaway.

The invention relates to a bilateral limiting floating trestle vehicle loading pool model test device and an implementation method, and the device comprises a floating trestle model which is formed by detachably connecting a plurality of bridge section models through bridge section connecting pieces; the plurality of mooring cables are used for respectively fixing the bridge section models at the bottom of the test pool; the traction mechanism is arranged at one end of the floating trestle model and provides traction force for the vehicle model through a traction rope; the vehicle model is connected with the traction mechanism and moves on the floating trestle model at different speeds, and the vehicle model simulates different vehicle loads by placing ballasts with different weights; and a detection device. The device is compact and reasonable in structure and convenient to operate, and through fine equal-proportion scaling design, introduction of high-precision detection equipment, application of a bilateral limiting mechanism and an arresting device and flexible combination of detachable parts, the dynamic response characteristics of a real floating trestle under the action of vehicle loads and waves are successfully simulated.

This invention provides a high-strength polyester fiber for outdoor use with radiative cooling function. The preparation method includes the following steps: titanium dioxide, silicon dioxide, silicon carbide, and zirconium phosphate are blended and ground in a certain proportion, dispersed in an acetone solution with a dispersant added, and then ultrasonically treated to form a nanoparticle dispersion; the nanoparticle dispersion is mixed with polyester chips; the mixed composite material is fed into a screw extruder for melt blending to form a spinning solution; the spinning solution is precisely metered by a metering pump and extruded through a spinneret to form fiber bundles, the spinneret being equipped with a slow-cooling heating device; the fiber bundles are post-treated to obtain high-strength polyester fibers. This invention selects a specific combination of titanium dioxide, silicon dioxide, silicon carbide, and zirconium phosphate, combined with specific slow-cooling technology and high-ratio stretch setting, to give the fiber excellent radiative cooling performance and mechanical strength, which can be widely used in outdoor clothing, awnings, car covers, and other fields.

The present invention discloses a method for preventing aviation fuel pipelines from sliding across a push-type landslide based on a combined pile wall, including setting a combined pile wall behind the aviation fuel pipeline that crosses the push-type landslide; designing the size parameters of retaining walls and anti-sliding piles according to landslide parameters and aviation fuel pipeline parameters; using finite element software to calculate according to the pipe-soil-oil-anti-sliding measures multi-physics field fully coupled model, and extracting the pipeline equivalent stress cloud map and displacement cloud map; analyzing the pipeline stress distribution and deformation according to the pipeline equivalent stress cloud map and displacement cloud map; optimizing and upgrading the combined pile wall. The present invention performs segmented protection and treatment for aviation fuel pipeline landslides, and adopts retaining walls for anti-sliding protection in the layer through which the aviation fuel pipeline passes, which can effectively reduce the damage to the aviation fuel pipeline caused by the sliding of the landslide soil body and improve the stability of the aviation fuel pipeline; adopts anti-sliding piles for anti-sliding protection when the aviation fuel pipeline passes through the lower layer, which can reduce the moisture content of the soil body and save the cost of anti-sliding for landslides.

The invention discloses a continuous flow photocatalysis-biological coupling reactor enhanced wastewater treatment device and application thereof. The continuous flow photocatalysis-biological coupling reactor enhanced wastewater treatment device mainly comprises a reactor, the reactor comprises a quartz tube, an LED lamp strip and a reaction type carrier; the LED lamp strip is wound on the outer wall of the quartz tube; the reaction type carrier is arranged in an inner cavity of the quartz tube; the reaction type carrier consists of a photocatalytic material, a carrier and a biological membrane; the carrier is hollow, the photocatalytic material is arranged on the outer side of the carrier, and the biological membrane is arranged on the inner side of the carrier. The water inlet device pumps wastewater into the reactor through a water inlet pump; meanwhile, the LED lamp strip is started to promote the reaction of the wastewater in the reactor, the sampling port monitors the wastewater treatment condition, when the wastewater treatment does not meet the discharge standard, the wastewater is returned to the reactor through the circulating pump to be circularly treated, and when the wastewater treatment meets the discharge standard, the wastewater is discharged through the water outlet device. The reactor disclosed by the invention is suitable for advanced treatment of different types of wastewater, and the efficiency of photocatalysis and denitrification processes is remarkably improved.

The invention relates to a Mama-based frequency sensing multi-image fusion traffic flow prediction method, and belongs to the field of deep learning and intelligent traffic. Comprising the following steps: constructing two graph structures based on decomposed trend signals and event signals: a trend graph is used for learning a trend mode between nodes, an event graph is used for capturing a propagation mode of sudden disturbance in a traffic network, and original signals are used for constructing a key node graph; the spatial dependency relationship in the traffic network is comprehensively described by identifying strong aggregation nodes and distribution capability nodes; through diffusion convolution, information propagation is carried out on the three graph structures, and hierarchical feature fusion from local scale to global scale is realized; a multi-head attention mechanism is adopted, features from an event graph, a trend graph and a key node graph are adaptively integrated, and contribution weights of the graphs are dynamically adjusted to adapt to time-varying traffic features; a Mama model is used for capturing a time dependency relationship, and meanwhile, the calculation efficiency in long sequence modeling is kept and the prediction precision is improved.

A novel tapless resonant push-pull photovoltaic energy storage inverter topology is disclosed, relating to the field of energy storage system topology control technology, specifically a novel tapless resonant push-pull photovoltaic energy storage inverter topology. It includes a photovoltaic boost MPPT circuit, a DC-AC bidirectional inverter circuit, and a battery-side DC-DC tapless resonant push-pull bidirectional isolated charging circuit. The photovoltaic boost MPPT circuit is used to increase the DC voltage of the photovoltaic panels and perform maximum power point tracking control. The DC-AC bidirectional inverter circuit performs bidirectional DC-to-AC conversion through three independent T-type three-level circuits, each independently controlled, with low harmonic output current. The battery-side DC-DC tapless resonant push-pull bidirectional isolated charging circuit includes a tapless transformer and a push-pull circuit. Through innovative tapless resonant push-pull circuit, dual-transformer interleaved control technology, and three-level inverter circuit design, it achieves efficient power conversion, optimized battery charge and discharge management, and reduced high-frequency ripple and electromagnetic interference, thereby improving the overall efficiency, stability, and reliability of the photovoltaic energy storage system.

The invention relates to a dipyrrolothiophene compound, a photoelectric device and photoelectric equipment. The structural formula of the dipyrrolothiophene compound is shown in the specification, in the formula, R1, R2, R3, R4, R5 and R6 are respectively and independently selected from one or a combination of more of hydrogen, an energy level regulating group, a conjugate group, a solubility regulating group, an anchoring group and a polar group, the molecule takes a dipyrrolothiophene ring as a core to form a symmetrical planar tricyclic system, and a rigid planar structure without obvious distortion is formed. The rigidity derives from condensed ring conjugated strong bond energy, thermal vibration distortion of molecular configuration is effectively avoided, and a stable conjugate channel is provided for charge transfer. And the prepared photoelectric device and photoelectric equipment are high in photoelectric conversion efficiency.

The application provides a parameterized design method for fixed frog rail and wing rail profile considering geometric characteristics, belongs to the technical field of target identification, and can realize high-precision reconstruction of the profile of the fixed frog rail and the wing rail, so that the profile parameter adjustment of the rail and the wing rail is more targeted and predictable; can automatically execute processes such as drawing, design, modification and output, and compared with a traditional design method, the method has significant advantages in profile fitting accuracy and reconstruction efficiency; with the aid of the parameterized design method, the design rail and wing rail type can be flexibly adjusted, and rapid parameterized reconstruction of the fixed frog rail and wing rail structure is realized.

The application discloses a perovskite flexible solar cell and lithium-sulfur battery integrated self-charging system and a preparation method thereof. The system comprises a perovskite flexible solar cell and a lithium-sulfur battery. The perovskite flexible solar cell comprises a flexible substrate, a transparent conductive layer and a plurality of perovskite cell units arranged in sequence. The perovskite cell unit comprises an electron transport layer, a perovskite layer and a hole transport layer arranged in sequence. Each perovskite cell unit is in a series connection relationship. The positive electrode of the last perovskite cell unit serves as the positive electrode of the perovskite flexible solar cell. The negative electrode of the first perovskite cell unit serves as the negative electrode of the perovskite flexible solar cell. The lithium-sulfur battery comprises a positive electrode, a negative electrode and a solid electrolyte. The positive electrode is electrically connected with the positive electrode, and the negative electrode is electrically connected with the negative electrode, so as to form a loop. The application can improve the integration, overall efficiency and stability of the self-charging system.

This invention aims to provide a testing device for an air conditioner motherboard. The invention includes an air conditioner motherboard connected to a testing device via a digital potentiometer board. The digital potentiometer board includes a first resistor. The air conditioner motherboard includes an MCU unit and a temperature sensor socket. The MCU unit is connected to the digital potentiometer board via a temperature sensing circuit, which includes a second resistor and a third resistor. The node between the temperature sensor socket and the third resistor is grounded via the second resistor and a first capacitor, respectively. The node between the third resistor and the MCU unit is grounded via the second capacitor. The temperature sensor socket is connected to a 5V voltage and is connected to the first resistor. This invention applies to the technical field of motherboard testing.

The invention relates to an urban sewage treatment system and method based on a high / low DO alternating MBBR (Moving Bed Biofilm Reactor). According to the system and the method, long-sludge-age autotrophic nitrogen removal microorganisms and short-sludge-age phosphorus-accumulating bacteria are separated by utilizing the MBBR, and through alternate operation of high / low DO, a suitable growth environment is created for different microorganisms, so that synchronous and efficient nitrogen and phosphorus removal is realized. According to the system and the method, short-cut nitrification-anaerobic ammonia oxidation and biological phosphorus removal reaction are enhanced, the operation energy consumption is reduced, and the problems that urban sewage carbon sources are insufficient, the nitrogen and phosphorus removal effect of a traditional process is not ideal and the like are solved. The system is simple in device, simple in process, compact in arrangement and wide in application prospect. Compared with the prior art, the method has the advantages that the reaction rate is increased, a good nitrogen and phosphorus removal effect is ensured, the energy consumption is reduced, and the operation convenience is optimized.

The present invention discloses a variable inductor based on an adjustable permanent magnet and a verification method thereof, which belongs to the field of inductance, and comprises two openings and oppositely arranged magnetic cores, two main power inductor windings are respectively wound around the outer sides of the two side columns of the magnetic core, one end of the two main power inductor windings are mutually connected in series, and the other ends of the two main power inductor windings are both electrically connected to an AC power supply; an adjustable permanent magnet is inlaid on the middle column of the magnetic core, a pulse magnetic modulation winding is wound around the outer side of the middle column inlaid with the adjustable permanent magnet, and the pulse magnetic modulation winding is electrically connected to a pulse power supply circuit for adjusting the peak value of the pulse current. The present invention adopts the above-mentioned variable inductor based on an adjustable permanent magnet and a verification method thereof, and can change the magnetic field strength of the adjustable permanent magnet by changing the pulse magnetic modulation current, thereby reducing the loss, and at the same time reducing the power level, volume and heat generation of the circuit matched with the control inductance value, further increasing the application scope of the variable inductor.

The invention discloses a directional domestication method of an acid-resistant cellulose degradation flora and application of the acid-resistant cellulose degradation flora in phosphogypsum composting, the directional domestication method comprises the steps of bacterium source collection, microorganism enrichment, acid screening and directional domestication, an acid screening culture medium is prepared from 1g / L of KH2PO4, 0.3 g / L of MgSO4. 7H2O, 0.1 g / L of CaCl2, 0.01 g / L of FeCl3, 2.5 g / L of NaNO3, 0.1 g / L of NaCl and 20-40g / L of waste biomass, and the pH is 3-6; a domestication culture medium is an acidic screening culture medium and 8-24g / L of phosphogypsum. The acclimatization is carried out to obtain the acid-resistant cellulose degradation flora, the degradation of waste biomass can be carried out in a composting system with the pH value of 3-6 and ardealite as a raw material, the acid-resistant cellulose degradation flora has the advantages of good acid tolerance, strong adaptability and low competitiveness, and the composting efficiency is improved.

The invention discloses a destination prediction method and system based on a hierarchical space-time embedded transformer model, and the method comprises the steps: carrying out the coarse-grained mesh division and space-time coding of a region corresponding to a part of trajectory # imgabs0 #, obtaining a coarse-grained space-time trajectory image representing the general trend of the trajectory, and carrying out the prediction and extraction of a destination mesh region through a CNN (Convolutional Neural Network); the method comprises the following steps: extracting GPS track points, performing fine-grained grid division and space-time coding on a destination grid region to obtain a refined destination region track image, extracting motion features of the GPS track points in the destination region by using a feature pyramid transformer FPT, predicting the probability of candidate destinations by using a full-connection network and a Softmax classifier, and determining the output candidate destinations. The invention aims to extract the spatio-temporal information from the trajectory data to predict the destination, and solves the problems of data sparsity, time information loss and insufficient multi-scale feature extraction in the existing method.

The method for estimating the yield of shiitake mushrooms based on lossless phenotypic parameter extraction based on three-dimensional reconstruction belongs to the field of agricultural information and intelligent technology, and solves the problem of low accuracy in estimating the yield of shiitake mushrooms. The method of the invention comprises: using the region of interest to perform three-dimensional reconstruction of the point cloud of shiitake mushrooms to generate dense point cloud data; preprocessing the dense point cloud data; segmenting the shiitake mushroom point cloud based on the improved CP-PointNet++ model and clustering algorithm, extracting multi-dimensional key phenotypic parameters of the cap diameter, thickness, and stipe height, and covering the main features of the phenotypic information of shiitake mushrooms; the improved PointNet++ network comprises: adding a CBAM module to the MLP layer of the PointNet++ network, and replacing ordinary convolution with partial convolution PConv; using the phenotypic parameters of shiitake mushrooms as input variables of the neural network model to predict the yield of shiitake mushrooms. The invention is suitable for phenotypic trait analysis and breeding research of edible fungi such as shiitake mushrooms.

The invention discloses a multi-party confidential sorting method for a low-altitude cooperative network, and belongs to the technical field of secure multi-party computing. The invention aims to solve the problems of repeated comparison and overflow in the traditional comparative protocol. According to the invention, based on a threshold encryption system, all participants cooperatively generate a threshold ElGamal public key; the participant constructs a prime number coding vector with the length of 1, 2 and 3 according to private input data of the participant, encrypts the prime number coding vector based on a public key and then sends the prime number coding vector to the participant, the participant multiplies each column to obtain a multiplied vector, and the participant selects the first ciphertext component from the ciphertext vectors according to input of the participant; and then obtaining a plaintext based on threshold decryption, carrying out prime factorization on the plaintext, and obtaining a sorting result output by the participant according to the occurrence frequency of the corresponding prime number of the participant in the plaintext prime factorization.