29results about "Table lookup" patented technology

The invention relates to the technical field of yield control, in particular to a neutron generator yield control method and system. The method comprises the following steps: establishing a polynomial model by using historical yield data to predict a target efficiency attenuation factor; dynamically determining neutron event boundaries in the pulse integral value and the pulse width two-dimensional characteristics based on the attenuation factor, and counting the neutron event boundaries; the yield deviation and the change rate are calculated, and when the deviation exceeds a threshold value, feedforward compensation is carried out on the target yield; and selecting a three-dimensional lookup table, an input deviation, a change rate and a current high voltage according to the interval to which the attenuation factor belongs, and cooperatively determining the adjustment amount of the ion source current and the accelerator high voltage. According to the scheme, the measurement and control problems caused by aging of the target piece can be solved, and the precision, the response speed and the long-term stability of yield control are improved.

The invention discloses a layered energy-saving driving speed optimization method, computer equipment and a storage medium, and relates to the technical field of data processing.The method comprises the steps that a longitudinal dynamic model is constructed according to the relation between the vehicle state and the driving mileage; constructing an energy consumption model according to the relationship among the vehicle speed, the driving torque and the instantaneous battery output power; constructing a green wave window according to the energy consumption model so as to generate the optimal passing time and the entrance and exit speed of each road section; constructing and optimizing a fillet parallelogram envelope line based on the green wave window according to the maximum speed, the maximum acceleration and the maximum deceleration of the vehicle so as to construct a space-time boundary of the green wave window; and generating an energy-saving speed curve according to the longitudinal dynamic model, the energy consumption model, the space-time boundary of the green wave window, the optimal passing time and the entrance and exit speed. By adopting the method, the speed track with an excellent energy-saving effect can be quickly calculated and obtained.

The invention discloses a surrounding rock grading method considering engineering disturbance influence, which belongs to the technical field of surrounding rock grading and comprises the following steps: constructing a disturbance reduction coefficient expression; sound wave test data in the engineering construction process are collected and analyzed, and key factors influencing the disturbance reduction coefficient are determined; based on the disturbance reduction coefficient expression, determining a disturbance reduction coefficient value table under different key factors; and looking up the table to determine the disturbance reduction coefficient value under the current project, and substituting the disturbance reduction coefficient value into the surrounding rock quality evaluation expression to determine the surrounding rock grade. The surrounding rock grading correction method considering the engineering disturbance influence is feasible, the grading problem that a classic BQ method is not incorporated into the engineering disturbance influence is solved, and effective guidance is provided for tunnel construction.

The invention discloses a multi-parameter intelligent adjustment energy efficiency management method and system for biogas purification, and belongs to the technical field of biogas purification. The method comprises the following steps: acquiring hydrogen sulfide concentration, carbon dioxide concentration and gas moisture content data, constructing an impurity parameter set based on historical sampling data, and calculating upper and lower envelope boundaries of each parameter to form an impurity parameter envelope boundary combination; calculating to obtain a comprehensive impurity fluctuation intensity index through the envelope width, and adding a fluctuation intensity label; and acquiring the accumulated regeneration times, adsorption efficiency and residual saturation of the adsorbent from a system background, calculating the health degree of the adsorbent, and distributing a health degree label. The intelligent regulation strategy table is constructed, and the corresponding regulation strategy is selected according to the real-time working condition, so that the dynamic energy efficiency management of the biogas purification process is realized, the pertinence and the stability of the regulation decision are improved, the system energy consumption is reduced while the purification effect is ensured, and the engineering application value is good.

The invention discloses a three-phase copper bar temperature estimation method and system of a new energy automobile electric drive system, and relates to the technical field of electric automobile electric drive, and the method comprises the steps: obtaining the vehicle environment temperature and the vehicle time, and recording the time point during dormancy, the three-phase copper bar environment temperature and the three-phase copper bar estimation temperature; reading the time point when the vehicle is awakened after the dormancy, and determining the dormancy time of the vehicle by combining the dormancy time point; according to the current vehicle environment temperature, the vehicle dormancy time, the three-phase copper bar environment temperature and the three-phase copper bar estimated temperature, through a pre-constructed four-dimensional temperature estimation table when the three-phase current is zero, the initial temperature of the three-phase copper bar after waking up is obtained through table look-up; and according to the current environment temperature of the vehicle and the initial temperature of the awakened three-phase copper bar, the current temperature of the three-phase copper bar is calculated through a pre-established thermal network model from the environment temperature to the temperature of the three-phase copper bar. The method can achieve the accurate estimation of the temperature of the three copper bars, and effectively balances the performance and safety of an electric drive system.

This invention relates to the field of machine recognition technology, and particularly to a multi-task-based method and device for recognizing multi-pointer instruments in substations. This invention proposes a highly efficient multi-task instrument recognition network that can simultaneously handle three key tasks: target detection, instrument centering, and pointer segmentation of substation instruments. This significantly improves the detection speed while greatly enhancing the accuracy of instrument pointer detection. The algorithm proposed in this invention has higher universality, enabling the recognition of multiple instruments and multiple pointers, effectively solving the problem of using a different recognition algorithm for each instrument. The dataset for this invention is entirely derived from actual substations. Even in outdoor scenes and under conditions of poor image quality, it achieves accurate recognition of single and double-needle instruments in substations, including instruments in switchgear, discharge counters, main transformer temperature instruments, current transformers, voltage transformers, and surge arresters, with an accuracy approaching 100%. The algorithm is flexible in configuration, easy to set up, and reliable in operation.

The invention discloses a cigarette retailer operation sunny and rainy display board and a use method, the display board comprises a display board body, a display area is arranged on the display board, each display area is divided into four index areas, namely inventory health degree, sales rate, sales speed and customer satisfaction, a state indicating component, a state display column and a state reference card are arranged in each index area, each state indicating component comprises a sliding identification ring and a symbol module set, four-level state judgment standards of each index are printed on the state reference card, four-level states comprise excellent, good, middle and poor, and the index is displayed according to the judgment standards printed on the state reference card. The sliding identification ring and the symbol module are fixed in the state display column according to a judgment standard, retail clients realize sales self-management through the display board, and client managers can quickly and accurately know the health states and recent weaknesses of the retail clients when visiting the market through color identification and visual symbols.

The utility model relates to the field of electric charge collection, in particular to an electric charge collection and calculation device, which comprises a calculator body. The calculator further comprises a fixing base, a second through groove, a sliding groove, a blade, a shifting block, a positioning groove, a circular groove and a reset rotating shaft, a mounting groove is formed in the front side of the upper surface of the calculator body, a clamping assembly is arranged in the mounting groove, and a sliding cover is slidably connected to the position, corresponding to the mounting groove, of the upper surface of the calculator body. By arranging the shifting block, the blade can be driven to synchronously slide when the shifting block slides left and right, so that an electricity bill paper roll can be cut off, the flatness of tearing the electricity bill is improved, the sliding stability of the shifting block can be improved through the arrangement of the positioning groove, and a connecting rope is wound on the outer surface of the reset rotating shaft, so that the electricity bill can be torn off conveniently. And one end of the connecting rope is bound with the blade, so that after the shifting block is loosened, the reset rotating shaft can automatically reset and rotate to drive the connecting rope to pull the blade and the shifting block to reset, and next cutting is facilitated.

The application discloses a layered energy-saving driving speed optimization method, a computer device and a storage medium, relates to the technical field of data processing, and comprises the following steps: constructing a longitudinal dynamics model according to the relationship between the vehicle state and the driving mileage; constructing an energy consumption model according to the relationship among the vehicle speed, the driving torque and the instantaneous battery output power; constructing a green wave window according to the energy consumption model to generate the optimal passing time of each road section and the entrance and exit speed; constructing and optimizing a round-cornered parallelogram envelope based on the green wave window according to the maximum speed, the maximum acceleration and the maximum deceleration of the vehicle to construct the space-time boundary of the green wave window; and generating an energy-saving speed curve according to the longitudinal dynamics model, the energy consumption model, the space-time boundary of the green wave window, the optimal passing time and the entrance and exit speed. According to the application, the energy-saving effect of the speed trajectory can be quickly calculated and obtained.

This utility model discloses a chemotherapy pump quick calculation compass, relating to the field of medical device technology. The chemotherapy pump quick calculation compass includes a first turntable, a second turntable, a rotating pointer, and a rotating shaft. The first turntable, second turntable, and rotating pointer are sequentially arranged along the axial direction on the rotating shaft. The upper surface of the first turntable has a dosage scale, and its center is fixedly connected to the rotating shaft. The upper surface of the second turntable has a time scale, and its center is rotatably connected to the rotating shaft. The end of the rotating pointer furthest from the needle tip is rotatably connected to the rotating shaft. The diameter of the first turntable is larger than that of the second turntable, and the length of the rotating pointer is smaller than the radius of the second turntable. This utility model, through the combination of the pointer's value, the time scale, and the dosage scale data, can intuitively show the infusion start time, the medical staff shift change time, and the infusion volume. Then, by comparing the infusion volume on the turntable with the value on the infusion pump, it can be determined whether the infusion volume is within a reasonable range.

The utility model discloses a sunrise and sunset calculation lookup table which comprises an identification mainboard and a vernier which are matched with each other, the identification mainboard is of a thin plate structure with a time difference indicating gauge arranged on the surface, and damping adhesive tapes are adhered to the upper end and the lower end of the identification mainboard; the vernier is of a transparent scale structure with an indicating marked line and scales on the surface, the upper end and the lower end of the vernier extend inwards to form sliding parts respectively, the vernier is connected with the identification main board in a sliding mode through the sliding parts, the vernier slides in the X-axis direction of the identification main board through the sliding parts and indicates the scales, and the sliding parts abut against the damping rubber strip when moving. The damping rubber strip is mainly used for reducing the friction force between the vernier and the identification main board, so that the vernier can slide more stably and smoothly. According to the sunrise and sunset calculation lookup table provided by the utility model, through a physical structure and simple and visual scales, a user can quickly find sunrise and sunset moments at any place and at any date.

The invention relates to a transcendental function calculation device based on a lookup table and a self-reconfiguration self-evolution AI chip, and the device comprises a lookup table address generation module which is configured to receive configuration parameters and input data in a first fixed-point format, convert the input data into intermediate data in a second fixed-point format based on the configuration parameters, and send the intermediate data to the lookup table address generation module; processing the intermediate data into a lookup table address; wherein the data bit width of the second fixed-point format is smaller than the data bit width of the first fixed-point format; the lookup table module comprises a programmable memory; the programmable memory is used for storing a loadable lookup table data set, and the lookup table data set is a function value set after the transcendental function of the current configuration is quantized; the lookup table module is configured to respond to a lookup table address, read corresponding lookup table data from the programmable memory and output the lookup table data as a function value; by updating configuration parameters and lookup table data, the device can be reconfigured to calculate different transcendental functions, so that high precision, low delay, high flexibility and low hardware overhead can be considered at the same time.

The application discloses a cab cleanliness determination method, device, equipment and storage medium, and belongs to the technical field of automobiles. The method specifically comprises the following steps: acquiring environment image information of a cab and air sensing information of the cab; based on the environment image information, a preset visual cleanliness evaluation strategy is used to obtain visual cleanliness; based on the air sensing information, a preset air cleanliness evaluation strategy is used to obtain air cleanliness; based on the visual cleanliness and the air cleanliness, a fuzzy logic controller is used to determine the cab cleanliness and a processing suggestion corresponding to the cab cleanliness; and the cab cleanliness and the processing suggestion corresponding to the cab cleanliness are output.

The utility model relates to diabetes technology field, proposes a kind of diabetes diet turntable, including mobile seat, the top end surface of mobile seat is equipped with hidden groove, and the central screw joint of hidden groove has guide rail, and the sliding block of guide rail is slidably installed;The diabetes diet turntable, the content shown in notch on disc can be adjusted by rotating diet marker plate, when receiving, by the push handle is lifted, and by the reverse drive screw of motor, the sliding block can be reversely slid on guide rail, when sliding block moves to the first end position of guide rail, rotates vertical rod, makes it fold, and presses diet marker plate and makes it be received into shrinkage groove, can let shrinkage frame be received into hidden groove, loosen diet marker plate, under the tension of spring, diet marker plate can be reset, the position of diet marker plate can be limited from top by limiting plate, this mode can reduce the volume of equipment, and it is convenient for medical staff to store it.

An oxygen surplus monitoring and prompting device relates to the technical field of oxygen bottle auxiliary cards and comprises a shell, a fixing shaft is arranged in the middle of an inner cavity of the shell, the fixing shaft and the shell are integrally formed in an injection mode, a rotating plate is arranged outside the fixing shaft and rotationally connected with the inner cavity of the shell, and the rotating plate is connected with the fixing shaft. A pressure value mark is arranged at the front end of the rotating plate, a hollowed-out pressure unit display window is arranged above the front end of the shell and used for displaying the pressure value mark, and an oxygen flow and pressure corresponding table is printed on the back face of the shell. According to the scheme, the problem that the oxygen allowance monitoring and prompting device cannot visually prompt corresponding to different flows under different pressures is solved.

The present application relates to the technical field of impedance matching of microwave sources, and specifically relates to a three-pin impedance matching method and device based on fast lookup table. The method comprises: constructing a mapping relationship table of three-pin insertion depth and impedance, and splitting and sorting to form a real impedance matching table and an imaginary impedance matching table; obtaining electrical parameters between a microwave source and a three-pin matching device or between the three-pin matching device and a load, and calculating the load impedance; finding an index position in the real impedance matching table and the imaginary impedance matching table that is conjugate matched with the load impedance, and outputting the insertion depth of the three-pin matching data entry at the index position; and when no match is found, gradually widening the index range until a matching data entry is found, and outputting the insertion depth of the three-pin matching data entry. The present application optimizes the data structure and lookup logic of the table, reduces the data amount during lookup, significantly improves the efficiency and speed of impedance matching, and guarantees the transmission of microwave signals.

The embodiment of the invention provides a dynamic calibration fixed-point number reciprocal table look-up method and device, computer equipment and a storage medium, and the method comprises the steps: uniformly dividing a fixed-point number interval [m1, m2) into a plurality of sections, carrying out the n-order Taylor expansion of a reciprocal function of a fixed-point number at the head of each section obtained through division, determining n + 2 coefficients corresponding to each section, constructing a corresponding relation table between each section and the coefficient; receiving a target fixed-point number, shifting the target fixed-point number to enable the shifted fixed-point number to be in a fixed-point number interval [m1, m2), and dynamically calibrating the shifted fixed-point number; based on the relation table, determining a to-be-input fixed point number and a coefficient corresponding to the calibrated fixed point number; the reciprocal of the target fixed point number is determined according to the to-be-input fixed point number and the coefficient, a reciprocal table is constructed for [m1, m2] during tabulation, the method is suitable for a full value space, storage occupation is reduced, and calculation precision is improved through shifting and calibration.

The invention relates to the technical field of data processing, and discloses a volume table data verification method, device and equipment, and the method comprises the steps: obtaining extraction data corresponding to a volume table, and carrying out the fitting of the extraction data, and obtaining target fitting data; performing derivative calculation on the target fitting data to obtain first-order derivative data and second-order derivative data of the target fitting data, and performing jump verification according to the second-order derivative data of the target fitting data to obtain jump data; sampling first-order derivative data and second-order derivative data of the target fitting data by using a sliding window analysis method to obtain derivative sampling data, and performing tampering data verification on the extracted data by using the derivative sampling data to obtain tampering data; and determining invalid data in the volume table according to the hopping data and the tampering data. The volume table checking method and device have the beneficial effects that the technical effects that the volume table can be automatically checked, and the checking accuracy of the volume table is improved are achieved.

The utility model discloses a children and teenager nutrition status evaluation disc which comprises a disc body, the disc body comprises an upper disc, a middle disc and a lower disc, and the upper disc, the middle disc and the lower disc are sequentially connected from top to bottom in a central rotation mode. The outer edge of one side of the upper disc is provided with height scales, and the upper disc is provided with an arc-shaped window and a pointer on the inner side of the height scales; the middle disc is provided with weight scales on the outer ring of the height scales of the upper disc, the middle disc is provided with BMI scales at the position corresponding to the arc-shaped window of the upper disc, and the outer edge of one side of the middle disc is provided with a fan-shaped notch; a plurality of fan-shaped data blocks which are arranged in sequence are arranged near the outer edge of the lower disc, and the size and the shape of each fan-shaped data block are matched with those of the fan-shaped notch of the middle disc. According to the utility model, the searched BMI value and the corresponding condition of the nutrition status are simultaneously displayed on the upper plate surface, that is, all data are simultaneously displayed on the same plate surface, so that the data display is more visual, and the operation is more convenient; and meanwhile, the age groups are divided into three mutually overlapped age groups, so that the data judgment precision is improved.

The utility model discloses a dietary inflammation index rotating disc which comprises a base plate, a plurality of sets of rotating grooves are formed in the base plate, rotating discs are rotationally connected into the rotating grooves, the outer sides of the rotating discs are provided with mounting grooves with the same number, the lower portions of the rotating discs are fixedly connected with a plurality of sets of positioning rods, and the positioning rods directly face the middles of the mounting grooves. A plurality of groups of positioning grooves matched with the positioning rods are formed in the lower portion of the base plate, a simple and visual dietary inflammation index rotating disc is provided, a user can be helped to rapidly know the influence of different foods on inflammation, the dietary structure is adjusted according to DII scores, the inflammation risk is reduced, and health is promoted.

The invention relates to the technical field of computers, in particular to an implementation method and device of an SRT divider. The method comprises the following steps: converting an original dividend mantissa and an original divisor mantissa by adopting the same conversion rule to obtain a second dividend mantissa, a second divisor mantissa and a second divisor cutoff value of the second divisor mantissa; wherein the representation form of the second divisor cut-off value is less than the representation form of the first divisor cut-off value corresponding to the first divisor mantissa; and according to the mantissa of the second dividend, the mantissa of the second dividend, the truncation value of the second dividend and a lookup table, executing SRT division iterative operation to obtain a final quotient value of the original dividend and the original dividend. According to the method provided by the embodiment of the invention, the dividend and the divisor are converted to improve the efficiency of matching the lookup table according to the cut-off value of the divisor, so that the efficiency of SRT division operation is improved.

The invention provides a thermal power plant carbon emission real-time quantification method and system using hyperspectral remote sensing image data. The method comprises the following specific steps: establishing a CO2 absorption coefficient lookup table by using an MODTRAN radiation transfer model; combining the CO2 absorption coefficient and to-be-monitored target hyperspectral remote sensing image data acquired in real time, inputting the matched filtering model to obtain an XCO2 concentration enhancement value, extracting to obtain a plume mask, filtering out the XCO2 concentration enhancement value outside the mask, inputting the XCO2 concentration enhancement value inside the mask into an emission inversion model, and calculating the emission inversion value of the to-be-monitored target hyperspectral remote sensing image data. And inverting the carbon emission intensity of the to-be-measured target by combining two meteorological parameters, namely the wind speed at the height of 100 meters and the vertical integral atmospheric quality. The emission estimation algorithm designed by the invention has fewer constraint conditions, can realize rapid real-time thermal power plant carbon dioxide emission estimation, and provides technical support for rapid response of real-time monitoring of environmental pollution problems such as abnormal carbon dioxide emission.

The application discloses a kind of thermistor signal simulation device and method for nuclear power plant reactor core measuring system, device includes controller, programmable logic device, digital-analog conversion unit, operational amplifier and analog switch;Theoretical voltage value of output is obtained by controller through the current value and thermistor value of four-wire thermocouple measurement channel collected;Programmable logic device generates voltage signal according to theoretical voltage value output signal Digital-analog conversion unit, and generates n-way output voltage by downstream n-way operational amplifier, to simulate four-wire thermistor signal;N-way output voltage signal end is connected with a way analog switch respectively;N-way analog switch is all opened and closed by programmable logic device, and is tested as thermistor simulation signal.The application utilizes digital processing and control technology, can output high-precision resistance signal and simultaneously provide multiple analog signals, so that the thermistor measurement function test of reactor core measuring system is more convenient and accurate.

The application discloses a small flame modeling method considering curvature and differential diffusion for hydrogen-rich fuel quenching, and belongs to the field of energy and combustion engineering. The method comprises the following steps: a database is established by solving one-dimensional premixed small flame equations by using ULF software; the database is mapped to a control parameter space (mixing fraction, process variable, enthalpy and hydrogen mass fraction) by an OpenFOAM mapping program, wherein the hydrogen mass fraction represents the curvature effect; a differential diffusion term is introduced when solving the control parameter equation set, and the thermochemical variable is obtained by table lookup. The application firstly considers the influence of the curvature effect and the differential diffusion effect on the quenching process, takes the hydrogen mass fraction as the curvature proxy variable, and significantly improves the prediction accuracy of the quenching speed. Through dimension reduction processing, the number of equations to be solved is reduced, the calculation efficiency is improved while the accuracy is ensured, and the method is suitable for quenching process simulation of all gas fuels.

The invention discloses a small flame modeling method considering curvature and differential diffusion for hydrogen-rich fuel tempering, and belongs to the field of energy and combustion engineering. The method comprises the following steps: solving a one-dimensional premixed flame equation by using ULF software to establish a database; mapping the database to a control parameter space (mixing fraction, process variable, enthalpy and hydrogen mass fraction) through an OpenFOAM mapping program, wherein the hydrogen mass fraction represents a curvature effect; a difference diffusion term is introduced when a control parameter equation set is solved, and thermochemical variables are obtained through table look-up. According to the method, the influence of the curvature effect and the difference diffusion effect on the tempering process is considered at the same time for the first time, the hydrogen mass fraction serves as a curvature agent variable, and the tempering speed prediction precision is remarkably improved. The number of solving equations is reduced through dimension reduction processing, the calculation efficiency is improved while the precision is guaranteed, and the method is suitable for tempering process simulation of all gas fuels.

The invention discloses a portable pull card for Chinese and foreign common metal alloy component and mark contrast, and aims to solve the problem that engineering technicians are inconvenient to inquire metal alloy parameters. The pull clamp is composed of three plate sheets, the first plate sheet and the second plate sheet are provided with display windows to form a T-shaped structure, and the third plate sheet is a sticking sheet capable of being pulled up and down. By pulling the third plate, the arrow is aligned with the appointed alloy grade, and the corresponding chemical components are displayed on the window. The method has the advantages that more than 180 common metal marks and chemical components are provided, mark contrast and chemical component elements can be expanded and updated according to application requirements, a simple, convenient and rapid query method is provided for engineering technicians, and the method has practical significance.

The invention provides an antenatal care flow turntable, and belongs to the technical field of medical instruments. The antenatal care process turntable comprises a first turntable and a second turntable, the first turntable is arranged at the top of the second turntable, a first connecting hole is formed in the top of the first turntable, a second connecting hole is formed in the top of the second turntable, an inserting cylinder is arranged in an inner cavity of the first connecting hole, and a connecting cylinder is inserted into the bottom of the inserting cylinder; a moving mechanism is arranged at the bottom of the connecting cylinder, a connecting mechanism is mounted at the top of the inserting cylinder, the connecting disc is mounted at the top of the inserting cylinder, the first limiting disc is mounted at the bottom of the connecting disc, and the first backing ring is mounted on the outer surface of the connecting disc. The limitation on the second rotating disc is relieved, and then the second rotating disc can be rotated to know the body weight index value of each week, the body weight which should be increased in the corresponding gestational week, the current gestational week antenatal care knowledge and the corresponding gestational health care knowledge are known.

A system for a website building system server, the server having at least one processor and a memory, the system includes: an analyzer and updater to construct a promotional package for a user of the website building system according to at least editing history and / or business intelligence of a website belonging to the user, a channel determiner to determine the best mode of interface to present the promotional package to the user and a marketer to modify the website building system interface for the user according to the best mode of interface.

The invention relates to the technical field of impedance matching of microwave sources, in particular to a three-pin impedance matching method and device based on quick table look-up. The method comprises the following steps: constructing a mapping relation table of three-pin insertion depth and impedance, and splitting and sorting to form a real part impedance matching table and an imaginary part impedance matching table; electrical parameters between the microwave source and the three-pin matcher or between the three-pin matcher and the load are obtained, load impedance is calculated, an index position in conjugate matching with the load impedance is searched in the real part impedance matching table and the imaginary part impedance matching table, and the insertion depth of the three pins of the matched data entry where the index position is located is output; and gradually broadening the index range until the matched data entry is found when the matching data entry is not matched, and outputting the insertion depth of the three-pin of the matched data entry. According to the method, the data structure and the lookup logic of the table are optimized, the data volume during table lookup is reduced, the impedance matching efficiency and speed are remarkably improved, and transmission of microwave signals is guaranteed.