115results about How to "Reduce calculation errors" patented technology

The invention relates to the technical field of project management, in particular to a project cost data calculation management system and method.The project cost data calculation management system comprises a data acquisition module, a data modeling module, a data fusion and optimization module, a dynamic analysis and early warning module, a cost analysis module and a data storage module; a global cost prediction model is established through standardized processing of acquired multi-dimensional data, and real-time data is dynamically analyzed in a project implementation process to generate a cost control report and an adjustment suggestion. And after the project is completed, the system comprehensively analyzes all cost data and generates a multi-dimensional cost analysis report. The security and expandability of data are guaranteed by adopting a distributed storage technology, and the confidentiality and integrity of the data are ensured through a multi-user authority management function. According to the invention, the accuracy, real-time performance and safety of engineering cost management can be effectively improved, and comprehensive support is provided for cost control and optimization of an engineering project.

The invention belongs to the technical field of remote sensing image processing, and discloses a GEP refined visualization method and system based on objectified ecological pattern spots, and the method comprises the steps: obtaining a meter-scale / sub-meter-scale high-resolution remote sensing image based on a target region; the method comprises the following steps: dividing a remote sensing image into a plurality of ecological pattern spots with the same size, identifying the plurality of pattern spots with the same size based on a land utilization cover classification system to obtain a plurality of ecological pattern spots, and allocating a classification label to each ecological pattern spot; acquiring biological parameters of each ecological pattern spot; calculating the index parameter of each ecological pattern spot by using an InVEST model, and determining and displaying the GEP of each ecological pattern spot based on the index parameter of each ecological pattern spot; and taking the GEP sum of all the ecological pattern spots as the GEP of the target area and displaying the GEP. According to the method, the difference of ecological service supply capacities among different land covers is fully considered, and more detailed land utilization classification is formulated, so that more related information about GEP is displayed more visually.

The invention discloses a gas reservoir carbon dioxide burying amount calculation method considering pore expansion and component effects, and belongs to the technical field of carbon dioxide sequestration. The method comprehensively considers a pore expansion effect caused by CO2 injection, and establishes a pore expansion model by introducing a porosity pressure sensitivity coefficient; the pore expansion effect caused by the increase of the fluid pressure is effectively represented, so that the CO2 burying potential of the gas reservoir is more accurately evaluated. And secondly, a Peng-Robinson state equation is adopted, the thermodynamic interaction between CO2 and residual CH4 is considered, and the property change of the mixed gas is accurately represented. According to the method, the defect that a CO2-CH4 system is simplified into single-component gas when gas properties are calculated in an existing method is overcome, the calculation error of the CO2 structure burying amount caused by simplification is avoided, and meanwhile, the calculation error of the dissolved CO2 burying amount is reduced due to the fact that CO2 partial pressure calculation is more accurate.

The invention discloses an AI-AD intelligent machine design method and system based on a learning-generation mode. The method comprises the following steps: S1, enabling an AI-AD intelligent mechanical design system to understand design knowledge at first; s2, compiling a workflow with low codes; s3, compiling a Prompt strategy of the design Agent and a called knowledge base; s4, repeating the steps S1 to S3, and compiling various agents needing to complete various specific design functions; s5, according to the designed various agents, a multi-agent self-organizing framework is utilized, and product creation type design is completed; and S6, according to the generated design result, generating a VBA file and storing the VBA file in the cloud. And S7, the SW establishes a conversation with the agent through a back-end API of the agent, timely reads a VBA code of the cloud for modeling, and outputs a model. According to the invention, a system structure of knowledge processing, cloud data storage, SolidWorks-based secondary development modeling and a human-computer interface module is constructed, Agents are enabled to learn at first, then design is created, and a 3D model meeting user requirements is generated, so that the current situation that knowledge engineering has extremely high requirements for practitioners' admission threshold can be reduced.

The invention discloses a method for calculating a Manning roughness coefficient of a rectangular river channel containing submerged flexible plants. The method comprises the following steps: acquiring the volume VSP of a single plant and the number D of plants in a unit area; measuring the width B, the length L and the water level Hc of the river containing the submerged flexible plant section; equivalently distributing the plant resistance on the bed surface, and calculating the water depth Hp and the hydraulic radius Rp after equivalent distribution; determining the relationship between the dimensionless deflection angle of the plant and the submerging degree and the water flow velocity; and calculating to obtain a Manning roughness coefficient of the rectangular river channel containing submerged flexible plants. According to the method, the complex flow velocity distribution containing the plant section is reflected through the deflection angle and the submerging degree of the plant, the problem that the flow velocity parameter is not easy to determine is solved, the calculation error is reduced, the measurement precision is improved, and the calculation convenience and accuracy are improved.

The invention relates to a joint rotation combined collaborative robot real-time modal analysis method, which comprises the following steps of: 1, splitting a robot into a plurality of independent modules, and enabling each module to be equivalent to a super unit; step 2, obtaining a flexibility matrix Ci and a mass matrix Mi of each super-unit under an output coordinate system of the super-unit, and calculating and converting the Ci to obtain a flexibility matrix CJi of the super-unit under the output coordinate system when the super-unit rotates; 3, the flexibility matrix CJi and the mass matrix Mi obtained in the step 2 are converted to a robot end coordinate system, a robot whole machine flexibility matrix nC and a whole machine mass matrix nM are obtained, and the whole machine rigidity matrix nK is obtained by conducting inversion on nC; and 4, establishing an undamped free vibration equation of the robot, and substituting the complete machine flexibility matrix nC and the complete machine mass matrix nM obtained in the step 3 into the equation so as to solve the inherent frequency of the collaborative robot in real time. According to the method, the rigidity change condition during rotation of the joint module is considered, and the calculation amount is greatly simplified while the calculation error is reduced.

The invention relates to a method capable of measuring peripheral aberration of a retina. The method comprises the following steps: acquiring wavefront images at a plurality of positions on a retina, and for each wavefront image, carrying out the following processing: searching each light spot in the wavefront image; the light spot located at the centermost position in all the light spots serves as a standard light spot, the wavefront reference pattern is integrally moved, the center position of the wavefront reference pattern is made to coincide with the center of the standard light spot, and a corrected reference pattern is obtained; calculating the deviation condition of each light spot and the corresponding reference position in the correction reference pattern; and determining the aberration of the retina at the position according to each offset condition. The method can realize rapid and accurate wavefront image acquisition in multiple scanning modes, and is high in automation level and convenient to operate.

The invention relates to the technical field of asphalt smoke detection, and discloses an asphalt smoke preparation and collection device and method under simulated mixing conditions. The device comprises a reactor, a filter and a receiving bottle, the reactor comprises a heating furnace, the upper side of the heating furnace is fixedly provided with a tank body, the axis of the tank body is fixedly provided with a central shaft, the surface of the central shaft is rotatably provided with a stirrer, and the end part of the tank body is fixedly provided with a servo motor. According to the device, the arc-shaped plate in circular motion is arranged in the reactor, the arc-shaped plate not only has the function of stirring asphalt, but also has the functions of promoting external air to enter the reactor and promoting asphalt smoke in the reactor to be discharged, so that the air speed condition is omitted, and the simulated mixing condition of asphalt smoke preparation is closer to the condition of on-site asphalt smoke collection; the influence of the airspeed condition on the asphalt smoke release amount is reduced, the calculation error of the asphalt smoke mass is reduced, and the experiment accuracy is improved.

The invention relates to a mechanical arm coordinate conversion calibration method and device based on an optical tracking system, and the method comprises the steps: installing the optical tracking system, and fixing an optical calibration plate on a base of a to-be-calibrated mechanical arm; adjusting the joint of the mechanical arm to be calibrated to a standard zero position; sampling sample points in a plurality of directions perpendicular to the base flange plate through an infrared optical probe; performing circle center calculation based on a space circle equation, and determining a coordinate axis of the base; determining an intersection point on a base shaft and a base center point of the mechanical arm; calculating a space coordinate transformation matrix of the base according to the center point of the base and the X axis and the Y axis of the base; and the conversion module is used for converting the mechanical arm base into a coordinate system of the optical tracking system in real time based on the position of the optical calibration plate. Compared with the prior art, the problems that in a traditional method, operation is complex, the calculated amount is large, and the environmental influence is large are effectively solved, the positioning workload of the mechanical arm is remarkably simplified, and the working efficiency and operation safety of the mechanical arm are improved.

The invention provides a calculation method and an equivalent system for excitation surge current attenuation of a direct-drive fan grid-connected system, and the method comprises the steps: building a variable inductance model of a transformer based on the attenuation characteristics of the excitation surge current of the transformer; ignoring a control inner loop of the direct-drive fan grid-side converter, obtaining a transfer function of a current inner loop and a filter inductor, and obtaining an expression of simplified frequency domain input impedance according to the transfer function; on the basis of the expression of the simplified frequency domain input impedance, enabling the grid-side converter of the direct-drive fan to be equivalent to a series branch formed based on a circuit element RLC (Radio Link Control); establishing a system state space equation set according to the variable inductance model and the series branch, and performing state space modeling on the system state space equation set to obtain a state space equation of a state variable; and solving a characteristic root and a participation factor of the state matrix through the state-space equation, and obtaining the excitation surge current attenuation speed of the direct-driven wind power grid-connected system. And the precision of the excitation surge current attenuation calculation is improved.

The utility model relates to the technical field of cableways, and provides a steel wire rope stress monitoring device which comprises an angle monitoring assembly, a force measuring assembly and a force pre-applying module, and the angle monitoring assembly is suitable for abutting against a steel wire rope from bottom to top; the force measuring assembly is arranged below the angle monitoring assembly and connected with the angle monitoring assembly, and the force measuring assembly is used for monitoring the pressure borne by the force measuring assembly; the force pre-applying module is arranged below the force measuring assembly and is used for assisting the force measuring assembly in zero setting. According to the steel wire rope stress monitoring device provided by the utility model, the steel wire rope stress monitoring device is in direct contact with the steel wire rope, and the accurate stress value of the steel wire rope can be obtained through simple calculation by measuring the inclination angle of the steel wire rope and the component force corresponding to the angle, so that the local stress condition of the steel wire rope can be accurately reflected; and the accuracy and comprehensiveness of stress monitoring of the steel wire rope in the cableway line are improved.

The invention relates to a vibration source transverse distance determination method and device based on a distributed optical fiber, and belongs to the technical field of pipeline optical fiber early warning, and the method comprises the steps: obtaining a vibration original signal based on the distributed optical fiber, and extracting a high-frequency signal set and a low-frequency signal set of the vibration original signal; respectively calculating an energy value of the high-frequency signal set and an energy value of the low-frequency signal set, and obtaining a ratio characteristic of the high-frequency energy value and the low-frequency energy value; and based on different influence degrees of vibration sources with different distances on attenuation filtering of high and low frequency vibration, determining the transverse distance of the vibration source according to the ratio characteristics. The technical problem of how to improve the transverse positioning efficiency and accuracy of the vibration source under the embedding condition of a heterogeneous complex underground structure in the prior art is solved.

The invention relates to the technical field of electromagnetic calculation, in particular to a high-precision calculation method capable of achieving far-field calculation of a lightning electromagnetic field, and the method comprises the steps: precisely obtaining ground surface characteristics and atmospheric parameters on an electromagnetic field propagation path through fusing remote sensing data and ground surface measurement data, building a finer environment parameter set, and achieving the far-field calculation of the lightning electromagnetic field. And the dynamic characteristics of the lightning electromagnetic field propagation environment are fully considered. By analyzing the influence of the surface roughness on the electromagnetic wave reflection power and correcting the propagation loss parameter, the electromagnetic wave propagation precision is enhanced, and the influence of the surface medium is quantified more accurately. Based on a dielectric property abrupt change area on a propagation path, an equivalent reflectivity change and a refractive index adjustment amount are calculated, and a boundary condition of a nonlinear partial differential equation is corrected, so that propagation simulation of a lightning electromagnetic field in a complex medium environment is closer to a real condition. In the dynamic boundary correction process, the changes of the dielectric constant, the magnetic conductivity and the refractive index of the abrupt change area are accurately adjusted.

The application is suitable for the technical field of unmanned ship, and provides an unmanned ship mapping method, an unmanned ship and a computer readable storage medium, which comprises the following steps: in the process of unmanned ship sailing, a plurality of first position points in a target environment where the unmanned ship is located are acquired by a monocular vision device of the unmanned ship; for any one of the first position points, a bearing angle sequence of the unmanned ship relative to the first position point is acquired by the monocular vision device; positioning information of the first position point is calculated according to the bearing angle sequence; and a map of the target environment is generated according to the positioning information of each first position point in the target environment. Through the above method, the problem that the unmanned ship cannot accurately map due to limited load can be solved.

The invention relates to an electricity-saving measuring method and device for a high-voltage frequency converter, a medium, equipment and a program product, and relates to the technical field of electricity saving, and the method comprises the steps: obtaining the power frequency accumulated electric quantity of each load power frequency operation under various loads before the high-voltage frequency converter of a primary fan of a power generation system is transformed, and obtaining a plurality of power frequency accumulated electric quantities; obtaining the variable-frequency accumulated electric quantity of each load in variable-frequency operation under the various loads after the high-voltage frequency converter is transformed, and obtaining a plurality of variable-frequency accumulated electric quantities; and according to the plurality of power frequency accumulated electric quantities and the plurality of frequency conversion accumulated electric quantities, determining the power saving rate and the power saving quantity of the transformed high-voltage frequency converter. The electricity-saving quantity and the electricity-saving rate of the high-voltage frequency converter are calculated according to the electricity consumption before and after the high-voltage frequency converter is transformed in the electricity-saving technology, the accuracy of calculating the electricity-saving quantity and the electricity-saving rate of the high-voltage frequency converter can be improved, and calculation errors are reduced.

The application relates to the technical field of nuclear power plant safety testing, and particularly relates to a method for calculating the value of a control rod by a falling rod method and a device and an electronic device thereof, which comprises the following steps: acquiring the initial time t0 of a to-be-tested control rod before falling rod starts, the neutron flux density n0 corresponding to the initial time t0, the time t1 of falling rod ending, the neutron flux density n1 corresponding to the time t1, and the second neutron flux density n2 corresponding to any time t2 after the falling rod ends; calculating the period T1 of the time after the falling rod; and calculating the value |p1| of the to-be-tested control rod. In the application, the optimized formula simultaneously considers the influence of prompt neutrons and delayed neutrons, so that the measurement error of the falling rod method can be significantly reduced.

The application discloses a spacecraft inter-satellite closest time moment calculation method based on a neural network, and comprises the following steps: acquiring different initial state data of a spacecraft, calculating corresponding inter-satellite closest time moments, and jointly forming an inter-satellite closest time moment data set; constructing a spacecraft inter-satellite closest time moment calculation neural network model according to the inter-satellite closest time moment data set and performing neural network training; substituting target initial state data of the spacecraft into the trained spacecraft inter-satellite closest time moment calculation neural network model to perform calculation, and obtaining a spacecraft inter-satellite closest time moment calculation result. The spacecraft inter-satellite closest time moment calculation model constructed by the application can quickly calculate the spacecraft inter-satellite closest time moment with a small calculation error through the network trained in advance after acquiring the initial state parameters of the target spacecraft.

The invention discloses a 3D printing real model rendering method based on variable granularity, and belongs to the technical field of 3D rendering. The method comprises the steps that 3D printing parameters and the number of layers of a printed object are obtained, and the 3D printing parameters comprise 3D printing head parameters and 3D printer parameters; carrying out single-layer modeling on a printed object on the basis of 3D printing parameters and an interval adjusting strategy; based on a multi-layer fusion strategy, surface elements of each layer of the printed object are obtained; obtaining a body element set of the printed object based on the surface element of each layer of the printed object and the same region principle; based on the body element set of the printed object, constructing a 3D model library; based on the 3D model library and the secondary rendering strategy, the real model of the printed object is rendered, and the method improves the speed and authenticity of 3D rendering.

The invention discloses a multi-physics field coupling numerical simulation method for the selective laser melting forming process of an aluminum matrix composite. The method specifically comprises the steps that 1, a heat-force complete coupling control equation set is established; 2, carrying out homogenization thermal-mechanical property characterization on the AlSi10Mg / Al2O3 / SiC composite powder, namely establishing a quantitative relation between the equivalent thermal-mechanical property of the composite powder and particle characteristic parameters by adopting an Eshelby equivalent inclusion theory and a Mori-Tanaka homogenization method; 3, providing a dynamic laser heat source model, and simulating energy absorption, reflection and scattering behaviors caused by light-powder interaction; and 4, coupling the cellular automaton CA and the phase field method PF, and constructing a multi-scale dynamic model formed by solidification structure evolution and residual stress. According to the method, the limitation of an existing simplified model is overcome, and the high-fidelity numerical model comprehensively reflecting the multi-field coupling rule in the SLM forming process is established.

The invention discloses a method and a device for determining a fracture zone range under ultra-deep strike-slip fracture control. The method comprises the steps that according to logging data, the top vertical depth and the bottom vertical depth of an oil and gas reservoir under the control of ultra-deep strike-slip fracture are determined; according to the comprehensive logging data, the top closing distance and the bottom closing distance of the oil and gas reservoir are determined; determining the vertical thickness of the fracture zone according to the top vertical depth and the bottom vertical depth; determining the horizontal width of the crushed zone according to the top closing distance and the bottom closing distance; and according to the vertical thickness of the fracture zone and the horizontal width of the fracture zone, determining the range of the fracture zone controlled by the ultra-deep strike-slip fracture. By the adoption of the technical scheme, the range of the fracture zone can be determined according to the accurate vertical thickness of the fracture zone and the horizontal width of the fracture zone, so that the calculation error of the system is reduced, the accuracy of the calculation result is improved, and the determined range of the fracture zone better conforms to the real geological condition.

The invention relates to the technical field of data processing, and provides an asynchronous signal processing method and device based on a CPU + FPGA architecture, and the method comprises the steps: segmenting a simulation model in a CPU and an FPGA to obtain a CPU simulation model and an FPGA simulation model, and the FPGA simulation model comprises a counter, a comparator, a first register and a register matrix; the CPU simulation model carries out serialization processing on the first simulation signal to obtain a second simulation signal; the FPGA simulation model extracts effective data from the second simulation signal; inputting a simulation pulse signal of the CPU simulation model and enabling information of effective data into a counter; a counting result of the counter is input into the comparator; inputting an output result of the comparator into a first register, and registering an FPGA small simulation step length; and inputting the data information of the first simulation signal, the enabling information of the effective data and the FPGA small simulation step length into the register matrix to obtain a synchronizing signal of the first simulation signal.

The invention provides a turbine blade radiation temperature measurement error correction method based on a reflected radiation model, and the method comprises the steps: building a reflected radiation model through considering the reflected radiation of a preceding-stage guide blade, an adjacent moving blade and a combustion chamber wall surface at the same time; calculating a radiation angle coefficient between turbine blades and a radiation angle coefficient between wall surfaces of a combustion chamber by using a surrounding channel integral method; temperature distribution of the surface of the turbine blade and the wall surface of the combustion chamber at different temperatures is obtained through comsol simulation; and designing a multiple reflection radiation formula, accurately calculating the reflection radiation of the hot end part, and obtaining a corrected radiation temperature measurement result through inversion. According to the method, reflection radiation of a front-stage guide vane, adjacent movable vanes and a combustion chamber wall surface is considered, a surrounding channel integral method is adopted, surface element shielding between blade surfaces is considered, and a turbine blade surface radiation angle coefficient is calculated; the wall surface of the combustion chamber is increased, the reflection radiation of the hot end component is considered, a multiple reflection radiation formula is designed, the accurate reflection radiation of the hot end component is obtained, the reflection radiation calculation error is reduced, and the turbine blade radiation temperature measurement precision is improved.

The application provides an evaluation device and method for phase measurement error of a spherical near-field antenna when the antenna is installed eccentrically, which can evaluate the phase measurement error of a to-be-measured antenna in a certain direction, a certain section and a certain angle range of a space under different eccentric distances of the antenna in a field. The device comprises a spherical near-field scanning ring 7, a low-frequency probe array 8, a high-frequency probe array 9, a spherical near-field test azimuth turntable 11 and an adapter tool 12. The two half rings of the spherical near-field scanning ring 7 are respectively arranged with the low-frequency probe array 8 and the high-frequency probe array 9. The spherical near-field test azimuth turntable 11 is located on the central axis of the spherical near-field scanning ring. The azimuth turntable 11 is connected with the adapter tool 12. The tool main body structure 1 and the counterweight 6 are connected with the turntable flange 3 and are installed on the adapter tool 12. The to-be-measured antenna 10 is installed on the antenna installation hole 2 of the test tool.

The invention discloses a device for measuring displacement of an upper frame and a lower frame of a fan-shaped section of a continuous casting unit, and relates to the technical field of metallurgical equipment. The device for measuring the displacement of the fan-shaped section upper and lower frames of the continuous casting unit comprises a fan-shaped section upper frame, a vertical detection mechanism and a horizontal detection mechanism, and a fan-shaped section lower frame is arranged below the bottom of the fan-shaped section upper frame. The vertical detection mechanism comprises a measuring frame, a rectangular plate, a side plate, a sliding rod, a first rectangular rod, a sliding rod, a second rectangular rod and a laser distance measuring sensor, and the horizontal detection mechanism comprises a first mounting plate, a first moving plate, a second mounting plate, a second moving plate, a mounting seat, a pressure sensor, a limiting bottom plate, a telescopic rod, a spring and a pressing plate. Measurement of displacement in the vertical direction is achieved through the laser distance measuring sensor, the measurement precision is high, pressure is applied to the pressure sensor through the spring to send out a signal, and therefore the displacement of the fan-shaped section upper frame and the fan-shaped section lower frame in the horizontal direction can be monitored.

The invention relates to the technical field of gas tracking, and discloses a gas tracking calculation method for an oil-gas pipe network, and the method specifically comprises the following steps: collecting an oil-gas pipe network data set; preprocessing the oil and gas pipe network data set to obtain input data; creating a tracking calculation model; inputting the input data into a tracking calculation model to obtain a tracking calculation result; the tracking calculation model comprises a first tracking calculation model and a second tracking calculation model, the first tracking calculation model performs tracking calculation on associated gas natural gas, and the second tracking calculation model performs tracking calculation on moisture natural gas; the first tracking calculation model and the second tracking calculation model are respectively established according to the two types of gases, namely the wet gas natural gas and the associated gas natural gas, and different tracking calculation models are adopted for calculation based on the characteristic indexes of the wet gas natural gas and the associated gas natural gas, so that the calculation precision is improved, the calculation error is reduced, and the calculation accuracy is improved.

The application discloses a kind of based on time-sharing user's rate time period exception checking method, equipment and medium, the method includes obtaining user rate time period agreement parameter and user profile information from marketing system, obtains electric meter rate time period parameter measurement data from metering automation system, daily frozen electric quantity data and load curve data, and data preprocessing is carried out to the data collected;Parameter checking matrix P and electric quantity checking matrix E are constructed;According to the preset timing trigger condition and event trigger parameter exception checking and electric quantity exception checking;According to the checking result, divide exception type, and carry out visual display;According to exception type, generate processing work order and push to operation and maintenance end, update parameter checking matrix P and electric quantity checking matrix E after processing result feedback, complete exception closed-loop management.The application effectively solves the problems of insufficient parameter measurement accuracy, single electric quantity checking dimension, missing dynamic checking mechanism and low efficiency of exception positioning in the prior art.

The invention discloses farmland soil degradable mulching film residual quantity detection equipment and method in the technical field of sampling devices.The farmland soil degradable mulching film residual quantity detection equipment comprises a sampling assembly, the sampling assembly and soil form a shading cavity, the sampling assembly comprises a sampling box and a top cover fixed to the top of the sampling box, and a discharging opening and an interception channel are formed in the side face of the sampling box; an interception conveying plate is detachably clamped in the interception channel, and the sampling assembly is used for shading and collecting a soil sample with a degradable mulching film and inhibiting microorganisms in the soil sample from decomposing the residual degradable mulching film in the soil sample. By arranging the full-shading detection equipment for the residual quantity of the degradable mulching film, the light decomposition intensity and the decomposition quantity of the residual degradable mulching film in a soil sample by ambient light after sampling can be effectively reduced, the detection error of the residual quantity of the degradable mulching film can be effectively reduced, and the detection precision of the residual quantity of the light-degraded mulching film is improved.

This invention relates to a target localization and counting method based on point domain feature learning. The method includes: inputting the image to be detected into a backbone network to extract a three-level feature pyramid comprising top-level features, intermediate-level features, and bottom-level features; inputting the three-level feature pyramid into a multilayer perceptron module to capture the global long-distance dependence of its top-level features and obtain global information features; inputting the three-level feature pyramid into a visual centering mechanism module to aggregate local region features of its top-level features, obtain local information features, and connect them with global information features along the channel dimension to obtain mapped top-level features; then, combining these with intermediate-level and bottom-level features to form a mapped three-level feature pyramid; inputting this pyramid into a global centralization adjustment module; outputting an initial feature map to a multi-perceptron module; extracting channel features and spatial features and concatenating them to obtain a multi-perceptron feature map; then, passing through a regression head to output the predicted target count of the image to be detected; and finally, passing through a classification head to output the predicted target localization of the image to be detected.

The application discloses an eye diagram data synchronization circuit and method and a serial-parallel converter receiving end, and belongs to the technical field of high-speed serial data communication; the circuit comprises: a calibration signal generation module for generating a phase calibration signal according to a phase difference between a data sampling signal and an offset sampling signal; two registers for respectively outputting the offset sampling signal and pre / post offset sampling signals; wherein the pre / post offset sampling signals are obtained by outputting the offset sampling signal in advance / delaying half a bit period; and a selection output module for selecting the offset sampling signal or the pre / post offset sampling signals as a synchronized offset sampling signal output according to the phase calibration signal, so that the synchronized offset sampling signal and the data sampling signal are in the same bit period. The application has wide application range, high synchronization precision and good dynamic performance.

The invention belongs to the field of geological exploration, and particularly relates to a method for calculating the occurrence of an underground structural plane based on an in-hole television. After drilling work in any drilling direction and drilling angle is completed and an in-hole television result is obtained, calculation work is carried out on the basis of obtaining drilling hole information and structural plane information; according to the method, the occurrence of the underground structural plane can be calculated based on the in-hole television in any drilling direction and drilling angle, and the true tendency and the true dip angle of the structural plane in the geographic orientation can be obtained.