36results about How to "Does not affect calculation results" patented technology

The invention relates to a distributed parallel computing system based on dynamic data splitting and a method thereof. The system comprises a splitting unit, an operational unit, an environmental unit and a load balancing unit, wherein the splitting unit is responsible for splitting a data item to be computed and dividing data to be computed into a plurality of relative independent computational items according to division rules; the operational unit is responsible for performing distributed parallel computation on the computational items and comprises a plurality of calculators; the environmental unit is responsible for deploying the executive environment in the calculators before parallel computation and reducing the calculators to the state before execution after computational execution is completed; and the load balancing unit is responsible for inspecting loading conditions of all the calculators and dynamically distributing corresponding number of computational items to various calculators according to resource consumption conditions of the various calculators. The system and the method have the advantages that: firstly, the computing speed is accelerated to the maximum degree; secondly, spare resources of a computer are utilized to the maximum degree; thirdly, convenience is provided for controlling, monitoring and examining data computation; and fourthly, the operational unit is independently disaster-tolerant.

The invention discloses a user privacy protection method in personalized information retrieval. The user privacy protection method in personalized information retrieval is a user interest model anonymization method based on difference privacy and aims to remove contradiction between user privacy protection and improvement of personalized information retrieval performance. The user privacy protection method in personalized information retrieval aims to conduct anonymization after identifiers of a user interest model are concealed, and namely after the identifiers (including the ID, the name, the ID number, the SSN and the like of a user) are eliminated, related technologies of the difference privacy are mainly used for anonymizing standard identifiers of the user interest model. Namely, generalization is conducted on the standard identifiers of the user, Laplace noise is added so as to enable difference privacy protection requirements to be met, the inquiry precision of a statistical database is maximized, and the probability of identification of an entity and attributes is minimized. The user privacy protection method in personalized information retrieval can be widely applied to service systems, such as a personalized retrieval service system and a personalized recommendation service system. The invention belongs to the technical field of information and computers.

The invention provides a compensation method for airplane aeromagnetic interference, relates to the field of aeromagnetic detection, and aims at solving the problem that the estimation precision of the compensation coefficient is influenced by the morbid state of a present aeromagnetic interference coefficient calculation method. The method comprises the following steps that 1) a matrix delta is constructed; 2) the matrix delta is decomposed by wavelet; 3) bandbass filtering is carried out on a result of the step 2); 4) a subscript set L is determined so that the morbid state of bpf<L>(delta) is the weakest; and 5) a compensation coefficient equation is determined to solve the compensation coefficient of aeromagnetic interference. The method provided by the invention can effectively reduce the morbid state of the coefficient solution matrix, improve the solution precision of the compensation coefficient estimation algorithm, and can be applied to the field of aeromagnetic detection.

The invention discloses a numerical reservoir simulation method for measuring the flowing situation of a plurality of intersected discrete cracks. The method comprises the steps that a reservoir is divided into a continuous medium and a discrete crack medium; in order to remove extremely small grids, when a reservoir grid is created, a discrete crack endpoint is deformed or is simplified to be a segment by neglecting the thickness, then a rock stratum face grid is established, and a three-dimensional reservoir grid is established; practically measured reservoir parameters of holes, leakage, saturation and the like are input into a simulator, then a real value instead of a grid display value is used as the width of each discrete crack, and accuracy of a measured and calculated result is not lowered by deformation processing; the volume of the intersecting area of the discrete cracks is neglected, and a flow formula of the discrete cracks in the intersecting area is established; the reservoir parameters are corrected by utilizing the history fitting method; then well yield and remaining oil gas distribution and reserves are measured and calculated. The numerical reservoir simulation method can solve the problems that the discrete crack value simulation technology is prone to interruption and failure and is long in consumed time for measurement and calculation, so that the technology can achieve measurement and calculation in the whole process of full three-dimensional reservoir development, and improves accuracy of the measured and calculated result.

The invention discloses a device and method for positioning a workpiece on a linear conveyor belt through a visual system. The workpiece is placed in a photographing area to be fixed. A visual system photographs and records the position information of the workpiece in the photographing area, the linear conveyor belt conducts linear conveying on the workpiece from the upstream direction to the downstream direction, and the conveyor belt is stopped after conducting conveying for a distance. A pulse encoder detects linear distance data which are generated after the linear conveyor belt moves and transmits the data to a robot. The robot analyzes the data and works out the needed compensation amount for a work track, accurate positioning is achieved, and finally the robot acts on the workpiece. By means of the device and method for positioning the workpiece on the linear conveyor belt through the visual system, far-end visual positioning is used for near-end work track compensation, and compared with a dynamic linear tracking technology, compensation precision is high, and in addition the speed of the conveyor belt can be higher.

The invention relates to a method determining separation and distribution of structural-member composite crack front stress intensity factors. The method comprises the following steps: giving thermal load, surface force load and volume force load borne by a structural member, and a universal weighting function method basic equation for three-dimensional I, II, III composite crack problems under the independent or combined actions of the thermal load, the surface force load and the volume force load; dividing the crack front into random N-1 numbered subsections through N numbered nodes, and introducing a basic interpolation function Nj(s) and a partial variation function N'j(s) at each node j, thereby constructing a finite number of partial variation modes and interpolation modes; and then introducing 3 basic reference loads to solve the basic equation, thereby determining the numerical solution of the separation and distribution of composite stress intensity factors KI, KII and KIII. By utilizing the self consistency, the method can obtain the high-precision exact solution of the distribution of the three-dimensional crack front composite stress intensity factors KI, KII and KIII by constructing an iterative process.

The invention discloses a linear motor rotor position measuring method. The linear motor rotor position measuring method is characterized in that a reference image with the gray level gradually changing is arranged on a base of a linear motor, a video camera fixedly arranged on a motor rotor continuously shoots the reference image, single-line sampling is carried out on every two adjacent obtained images many times at intervals, the image information of the same lines corresponding to the two images is extracted in each-time single-line sampling, a phase correlation algorithm based on singular value decomposition (SVD) is carried out on the two single-line images obtained through each-time single-line sampling to obtain the horizontal movement values of the two single-line images in the motor rotor moving direction, statistics is carried out on the obtained multiple horizontal movement values to obtain the most precise horizontal movement value, and then the displacement and the speed of the motor rotor can be obtained. According to the method, the simultaneous multi-sampling single-line processing is suitable for hardware parallel processing, and achievement is easy. The linear motor rotor position measuring method is used for achieving the precise measurement of the position of the linear motor rotor, and the real-time performance and the anti-interference in the measuring process can be guaranteed.

The invention provides an improved bidirectional bilateral range-finding method. According to the method, a moving node continuously transmits signals to all fixed reference nodes twice, wherein one of the fixed reference nodes is a main fixed reference node, and the other fixed reference nodes are slave fixed reference nodes. The moving node transmits timing signals twice, and the main fixed reference node transmits a timing response signal once, thereby completing the measurement of the distance difference between the moving node and the main and slave fixed reference nodes. Meanwhile, the second timing signal transmitted by the moving node and the timing response signal transmitted by the main fixed reference node serve as the former two signals in the bidirectional bilateral range-finding. According to the invention, the method is high in positioning precision. Meanwhile, the method can achieve the measurement of a plurality of distance differences through two timing signals transmitted by the moving node, so the method can achieve the measurement of the distances from the moving node to all fixed reference nodes through one operation. The method is lower in power consumption,and solves a problem that multiple bidirectional bilateral range-finding consumes a lot of time.

A chemical and biological transducer is prepared by setting long period fibre grating, reflecting film on fibre section, fibre covering and fibre core on one piece of fibre to for a Michelson interferometer and then forming a fibre evanescent wave chemical and biological transducer based this interferometer. The sensing system comprises wide band light source, fibre, chemical and biological transducer formed as above, wide band coupler, fibre spectrograph and computer.

The invention relates to a battery insulation detection circuit and a control method thereof. The battery insulation detection circuit is characterized by comprising a battery pack, a positive insulation resistor, a negative insulation resistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first controllable switch and a second controllable switch, wherein the positive insulation resistor is connected to one end of the first resistor, one end of the first controllable switch and one end of a load resistor; the common end of the positive insulation resistor, the first resistor, the first controllable switch and the load resistor is connected to the positive end of the battery pack; the other end of the first resistor is connected to the other end of the firstcontrollable switch; the common end of the first resistor and the first controllable switch is connected to one end of the third resistor; the other end of the positive insulation resistor is connected to the other end of the third resistor, one end of the negative insulation resistor, one end of the fourth resistor; the common end of the positive insulation resistor, the third resistor, the negative insulation resistor, and the fourth resistor is grounded; the other end of the negative insulation resistor is connected with one end of the second resistor, one end of the second controllable switch and the other end of the load resistor; the common end of the negative insulation resistor, the second resistor, the second controllable switch and the load resistor is connected to the negative end of the battery pack; the other end of the second resistor is connected to the other end of the second controllable switch; and the common end of the second resistor and the second controllable switch is connected to the other end of the fourth resistor. The battery insulation detection circuit is simple in structure, good in real-time performance and high in detection precision.

The invention relates to a cause map with time nodes, which comprises a time axis composed of a plurality of time nodes, and event nodes respectively and correspondingly connected with the plurality of time nodes on the time axis, and the event nodes are connected with one another according to corresponding constraint conditions. The cause takes time as a node in the map rather than as an attribute of an event. Compared with a traditional knowledge graph or event graph, the cause map has obvious expandability and the calculation performance is remarkably improved, and the application effect isgood.

The invention provides a temperature measurement method and system for correcting a dual-wave-band temperature measurement error. At a correction stage, radiation energy and temperatures of a reference object at two different wavelengths are measured by using a thermodetector for dual-wave-band temperature measurement, and a formula expressing a relation between a logarithm of an emissivity ratio and l / Tdual is solved by fitting; and at a measurement stage, radiation energy and temperatures of a measured object at two wavelengths are measured by using a thermodetector for dual-wave-band temperature measurement, and an actual temperature of the measured object is calculated based on the calculated l / Tdual value and the formula obtained at the correction stage. Because the Tdual value is calculated based on the ratio value of the radiation energy and is not affected by the dielectric interference of the measurement path, the dual-wave-band temperature measurement error can be corrected effectively and the measurement result becomes accurate.

The invention discloses an elevator starting torque compensation method which is used for calculating a torque value which needs to be compensated when an elevator system is started. The elevator system includes a main controller, a speed controller, a starting torque compensator, a torque controller and an executing mechanism; a computing method includes the steps that step 1, a variable is defined; step 2, a value is assigned to the variable; step 3, the variable assignment is recalculated by detecting present running speed feedback information of an elevator; step 4, a value is assigned toa torque compensation value according to a variable result; step 5, the variable value is added with 1; and step 6, the step 3 is repeated again. According to the elevator starting torque compensationmethod, calculated results are high in veracity, calculated speed is high, and the calculated performance is independent of the elevator nature.

The invention discloses a circuit device and method for improving consistency of thermal printing concentration, and relates to the technical field of thermal printers. The method comprises the stepsof measuring and calculating battery voltage Vbat, battery internal resistance Rbat, conduction resistance Rg of a thermal printing head power supply switch, starting a motor for pre-feeding paper, measuring Vsys, Isys and VH when heating n points simultaneously, calculating the total current flowing through a printing head circuit during pressurization, obtaining current to-be-printed data, calculating the number of current to-be-heated points, calculating the heating time T under the current concentration requirement, and performing printing. According to the circuit device and method, through reasonable circuit design, the current and the voltage of the system and the voltage on a thermosensitive head are measured in the heating process, the next VH voltage is calculated according to the current heating point number and the next heating point number, and the relatively accurate power-on time is further calculated, so that the purpose of controlling the concentration consistency is achieved.

The invention provides a prediction compensation method for back-up roller eccentricity of a cold-rolling mill. The method includes the steps that enable signals and starting signals of eccentricity compensation are determined, and the datum inlet and outlet thickness difference and datum rolling force value are stored; after the eccentricity compensation is started, the prediction outlet thickness difference at the position of an outlet thickness gauge is predicted according to the relative inlet thickness difference, and then the prediction outlet thickness difference is compared with a measured outlet thickness difference to obtain eccentric signals; and an on-line recursive algorithm is used for estimating the parameters of eccentric body signals, and the corresponding roller gap compensation amount is calculated according to the reconstituted eccentric body signals. According to the prediction compensation method for back-up roller eccentricity of the cold-rolling mill, the relative thickness calculation mode is adopted, and thus the mixed-in noise and interference in the thickness difference detection link cannot influence calculation results; and the on-line recursive methodis adopted for estimating unknown parameters in the back-up roller eccentric body signals, no detecting element with the back-up roller rotating angle is required, the bad influence on the outlet thickness by back-up roller eccentricity can be accurately compensated for, the thickness precision of products is improved to a great extent, and production efficiency is also improved.

The invention relates to a numerical simulation method and system for solid propellant waste cutting treatment. The method comprises the steps of establishing a jet flow nozzle geometric model and a solid propellant geometric model; establishing a liquid-solid particle two-phase flow physical model of the pre-mixed abrasive water jet; establishing a kinetic control equation of the solid propellant; selecting three material parameters of an abrasive, water and the solid propellant; dispersing the liquid-solid particle two-phase flow physical model of the pre-mixed abrasive water jet by adoptingan SPH method; discretizing the kinetic control equation of the solid propellant by adopting the SPH method; establishing a time integral format; according to the jet flow nozzle geometric model, thesolid propellant geometric model, the discretized two-phase flow physical model and the discretized solid propellant dynamics control equation, carrying out numerical simulation calculation in a timeintegral format, so as to obtain field variables at different moments. According to the invention, the field variables can be quickly and accurately determined.

The invention discloses a stratified reservoir thermal density flow tracing method mainly comprising the following steps: drawing landform and grid and inputting information into computer software, selecting a basic equation needed by the flowing incoming flow, and selecting a turbulent model and parameters complying with calculation requirements; setting physical and thermodynamics properties of the incoming flow body according to the real conditions of the incoming flow body; adding a tracking agent in the computer software, and calculating a tracking agent motion convection dispersion equation and parameters thereof; setting the incoming flow tracing agent concentration A; selecting B% of the incoming flow tracking agent concentration as the contour border of the thermal interflow when the calculation is over, thus clearly displaying shape features like the interflow specific thickness and the central line specific position. The advantages are that the novel method can clearly display thermal interflow motion conditions including shape, thickness and central position, thus ensuring calculating accuracy.

The invention provides a multi-line flow distribution method and device and electronic equipment, and the method comprises the steps: obtaining dotting data uploaded by a plurality of clients; performing statistical processing on the dotting data, determining sub live broadcast duration of each line, and determining expected duration; respectively determining the user increment of each line withinthe expected duration, and determining the duration ratio of the total live broadcast duration of each line to the total live broadcast duration of all the lines; and determining the completion degree of each line according to the duration proportion of each line and a preset flow expected proportion, and determining a current line recommendation sequence. According to the multi-line flow distribution method and device and the electronic equipment provided by the embodiment of the invention, the flow values of the lines does not need to be obtained, but the flow is replaced by the live broadcast duration, and the final calculation result is not influenced. The flow to be generated by each line is predicted based on the expected duration, the situation of line switching can be effectivelyavoided, and the predicted numerical value is more accurate.

The invention provides a temperature measurement method and system for correcting a dual-wave-band temperature measurement error. At a correction stage, radiation energy and temperatures of a reference object at two different wavelengths are measured by using a thermodetector for dual-wave-band temperature measurement, and a formula expressing a relation between a logarithm of an emissivity ratio and l / Tdual is solved by fitting; and at a measurement stage, radiation energy and temperatures of a measured object at two wavelengths are measured by using a thermodetector for dual-wave-band temperature measurement, and an actual temperature of the measured object is calculated based on the calculated l / Tdual value and the formula obtained at the correction stage. Because the Tdual value is calculated based on the ratio value of the radiation energy and is not affected by the dielectric interference of the measurement path, the dual-wave-band temperature measurement error can be corrected effectively and the measurement result becomes accurate.

The invention discloses a device and method for positioning a workpiece on a linear conveyor belt through a visual system. The workpiece is placed in a photographing area to be fixed. A visual system photographs and records the position information of the workpiece in the photographing area, the linear conveyor belt conducts linear conveying on the workpiece from the upstream direction to the downstream direction, and the conveyor belt is stopped after conducting conveying for a distance. A pulse encoder detects linear distance data which are generated after the linear conveyor belt moves and transmits the data to a robot. The robot analyzes the data and works out the needed compensation amount for a work track, accurate positioning is achieved, and finally the robot acts on the workpiece. By means of the device and method for positioning the workpiece on the linear conveyor belt through the visual system, far-end visual positioning is used for near-end work track compensation, and compared with a dynamic linear tracking technology, compensation precision is high, and in addition the speed of the conveyor belt can be higher.

The invention provides a compensation method for airplane aeromagnetic interference, relates to the field of aeromagnetic detection, and aims at solving the problem that the estimation precision of the compensation coefficient is influenced by the morbid state of a present aeromagnetic interference coefficient calculation method. The method comprises the following steps that 1) a matrix delta is constructed; 2) the matrix delta is decomposed by wavelet; 3) bandbass filtering is carried out on a result of the step 2); 4) a subscript set L is determined so that the morbid state of bpf<L>(delta) is the weakest; and 5) a compensation coefficient equation is determined to solve the compensation coefficient of aeromagnetic interference. The method provided by the invention can effectively reduce the morbid state of the coefficient solution matrix, improve the solution precision of the compensation coefficient estimation algorithm, and can be applied to the field of aeromagnetic detection.

The invention discloses a user privacy protection method in personalized information retrieval. The user privacy protection method in personalized information retrieval is a user interest model anonymization method based on difference privacy and aims to remove contradiction between user privacy protection and improvement of personalized information retrieval performance. The user privacy protection method in personalized information retrieval aims to conduct anonymization after identifiers of a user interest model are concealed, and namely after the identifiers (including the ID, the name, the ID number, the SSN and the like of a user) are eliminated, related technologies of the difference privacy are mainly used for anonymizing standard identifiers of the user interest model. Namely, generalization is conducted on the standard identifiers of the user, Laplace noise is added so as to enable difference privacy protection requirements to be met, the inquiry precision of a statistical database is maximized, and the probability of identification of an entity and attributes is minimized. The user privacy protection method in personalized information retrieval can be widely applied to service systems, such as a personalized retrieval service system and a personalized recommendation service system. The invention belongs to the technical field of information and computers.

The present invention provides a method, device, and electronic equipment for multi-line traffic distribution, wherein the method includes: acquiring the dotted data uploaded by multiple clients; performing statistical processing on the dotted data to determine the sub-live broadcast duration of each line, And determine the expected duration; respectively determine the user growth of each line within the expected duration, and determine the proportion of the total live broadcast duration of each line to the total live broadcast duration of all lines; according to the duration ratio of each line and the expected The expected traffic ratio determined determines the degree of completion of each route and determines the current route recommendation order. The method, device and electronic device for multi-line traffic distribution provided by the embodiments of the present invention do not need to obtain the traffic value of the line, but replace the traffic with the duration of the live broadcast, without affecting the final calculation result. Predicting the upcoming traffic of each line based on the expected duration can effectively avoid the situation of switching lines and make the predicted value more accurate.

The invention discloses a stratified reservoir thermal density flow tracing method mainly comprising the following steps: drawing landform and grid and inputting information into computer software, selecting a basic equation needed by the flowing incoming flow, and selecting a turbulent model and parameters complying with calculation requirements; setting physical and thermodynamics properties of the incoming flow body according to the real conditions of the incoming flow body; adding a tracking agent in the computer software, and calculating a tracking agent motion convection dispersion equation and parameters thereof; setting the incoming flow tracing agent concentration A; selecting B% of the incoming flow tracking agent concentration as the contour border of the thermal interflow when the calculation is over, thus clearly displaying shape features like the interflow specific thickness and the central line specific position. The advantages are that the novel method can clearly display thermal interflow motion conditions including shape, thickness and central position, thus ensuring calculating accuracy.

The invention provides an improved bidirectional and bilateral ranging method. In this method, the mobile node continuously transmits two signals to all fixed reference nodes. Among these fixed reference nodes, one is the master fixed reference node, and the rest are slave fixed reference nodes. The mobile node transmits the time synchronization signal twice, and the main fixed reference node sends a time synchronization response signal to complete the measurement of the distance difference between the mobile node and the main and slave fixed reference nodes. At the same time, the second time synchronization signal sent by the mobile node and the main fixed reference node The time response signal sent by the reference node is used as the first two frame signals in the two-way bilateral ranging. The method in the present invention has the advantage of high positioning accuracy of the two-way bilateral ranging method; at the same time, multiple distance differences can be measured only by transmitting the time synchronization signal twice through the mobile node, and then can be measured at one time to obtain the distance between the mobile node and each distance. The distance of the reference node is fixed, and the power consumption is relatively low, which solves the problem of long time-consuming two-way and bilateral ranging.

The invention discloses a numerical reservoir simulation method for measuring the flowing situation of a plurality of intersected discrete cracks. The method comprises the steps that a reservoir is divided into a continuous medium and a discrete crack medium; in order to remove extremely small grids, when a reservoir grid is created, a discrete crack endpoint is deformed or is simplified to be a segment by neglecting the thickness, then a rock stratum face grid is established, and a three-dimensional reservoir grid is established; practically measured reservoir parameters of holes, leakage, saturation and the like are input into a simulator, then a real value instead of a grid display value is used as the width of each discrete crack, and accuracy of a measured and calculated result is not lowered by deformation processing; the volume of the intersecting area of the discrete cracks is neglected, and a flow formula of the discrete cracks in the intersecting area is established; the reservoir parameters are corrected by utilizing the history fitting method; then well yield and remaining oil gas distribution and reserves are measured and calculated. The numerical reservoir simulation method can solve the problems that the discrete crack value simulation technology is prone to interruption and failure and is long in consumed time for measurement and calculation, so that the technology can achieve measurement and calculation in the whole process of full three-dimensional reservoir development, and improves accuracy of the measured and calculated result.

The present invention provides a memory computing circuit based on magnetic memory, including: a magnetic memory array and a multi-channel reading circuit, wherein a plurality of memory cells in each row of the magnetic memory array share one word line, and a plurality of memory cells in each column The cells share one source line, and multiple memory cells in each column or row share a pair of complementary bit lines. Each memory cell includes: a MOS transistor and two MTJs, and the MOS transistor is used to control the reading of the two MTJs. Write, the drain of the MOS transistor is connected to the two MTJs, the storage states of the two MTJs are opposite and the two MTJs form a group for recording one bit of data, and the two MTJs are connected to each other One of the bit lines in the corresponding complementary bit lines; the read circuit is used to read the state of one or more memory cells in a column or row sharing a pair of complementary bit lines, so as to realize a bitwise logic operation. The invention can directly realize memory calculation on the memory array.

The invention belongs to the high-voltage direct-current transmission technical field and relates to a current characteristic quantity-based extra high-voltage direct-current transmission line fault recognition method. The method includes the following steps that: 1) an intermediate quantity is constructed: current at two ends of a line is summated, and the sum of the current at the two ends of the line is divided by 2, anti-synchronous change components are partially offset, and synchronous change components are amplified, the difference of the current at the two ends is divided by 2, and synchronous change components are partially offset, and anti-synchronous change components are amplified, and the per-unit value of the current at the two ends is obtained; 2) a criterion characteristic quantity r is constructed: b correlation coefficients are accumulated according to the intermediate quantity constructed in the step 1), the ranges of accumulation which is performed twice are not overlapped; 3) criteria are set up: three kinds of action criteria are set for the r value; and 4) the criteria are set: constant values involved in the criteria are subjected to setting calculation; and 5) the criteria are locked.

The invention discloses an air mouse. The air mouse comprises a shell and an operation control unit arranged in the shell, and the operation control unit is connected with an infrared communication receiver for the mouse, an infrared positioning receiver, silicon photocells, an infrared emitter for the mouse and battery. An air mouse control system comprises a one-to-one control system and a one-to-many control system. A control method includes firstly, emitting periodical infrared pulse signals, enabling every air mouse to receive the infrared pulse signals at the same time, computing coordinate values, sequentially emitting infrared polling signals to every air mouse after every air mouse is processed to request that every air mouse sends coordinates and key state data thereof, using a microcontroller to start to monitor the infrared communication receiver, and receiving the coordinates and the key state data sent by every air mouse; using the microcontroller to summarize all the coordinates and the key state data after every air mouse is polled, and sending summarized data to a computer mainframe through a USB communication protocol. The air mouse is low in cost, high in precision, easy to use, more precise in positioning and suitably applied to various environments.