40results 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 provides an ASIC implementation method special for a deep learning algorithm based on a ZYNQ architecture, belongs to the technical field of deep learning and relates to the field of deep learning, and the method comprises the steps: designing a universal IP module at an FPGA end according to a universal neural network module; an ARM end state machine is configured and used for processing and scheduling an IP module special for FPGA end hardware; the universal processor analyzes the neural network configuration information and the weight data, and transmits the neural network configuration information to the ARM end cache module; the FPGA end reads instructions of the PS end through the AXILite to execute specified operation, reads related weights through the AXIDMA, and stores the related weights in the corresponding cache modules; and the FPGA end performs operations such as convolution and pooling according to an instruction of the ARM end, and the ARM end reads an interrupt signal value of the FPGA end to judge a convolution state, sends a subsequent instruction and sends a final generation result back to the ARM end for storage so as to facilitate subsequent processing.

The invention belongs to the technical field of meteorology, and particularly relates to a sand storm monitoring method based on aerosol window analysis and spectral indexes. Preprocessing the Himawari-8 data, and generating a raster data set including channel data, latitude and longitude information, elevation angle information and zenith angle information; a lookup table is constructed through a 6S radiation transmission model, and the optical thickness of the aerosol is inverted by using spectral information in the remote sensing image; scanning an image through a sliding window, and screening a sand storm feature region in combination with weighted average, standard deviation and abnormal judgment of aerosol concentration; establishing a sand-dust spectral index by using the sand-dust sensitive wave band; and combining the aerosol concentration with the sand and dust spectral index to extract sand and dust storm information. According to the method, the aerosol concentration and the sand dust spectral index are combined, sand dust storm information can be effectively identified and extracted, and important data support is provided for environmental protection and disaster early warning; the diversity of the sand storm detection method is increased, and the obtained result is accurate and reliable.

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.

The utility model belongs to the technical field of medical equipment, and particularly relates to a fetal growth and development monitoring disc which comprises a monitoring disc body and a shell wrapping the monitoring disc body and used for protecting the monitoring disc body. The shell comprises a shell body and a shell cover detachably connected with the shell body, and the shell body and the shell cover are both made of transparent materials. The monitoring disc can be used for calculating the expected date of birth during pregnancy and estimating the growth and development condition of a fetus according to all stages of the pregnancy, the monitoring disc body can be installed in the shell, the monitoring disc body can be shielded and protected after the shell cover is covered, dust can be prevented, water splashing can be prevented, and the monitoring disc body can be prevented from being scratched; the content on the monitoring disc body in the shell can be directly seen through the shell cover, and after the shell cover is detached and opened, the rotating disc of the monitoring disc body can be rotated according to the gestational week, so that the growth and development condition of a fetus can be evaluated according to the growth and development standard reference value of the fetus in the gestational week stage.

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 discloses a method for calculating a target heart rate of exercise, which comprises the following steps of: 1, obtaining the consensus of the relation among age, resting heart rate and target heart rate in the biomedical field and the sports science field at present by looking up academic literatures; 2, designing a research scheme, and determining a method and a tool for collecting data; 3, collecting data on site to obtain 324 samples; 4, through statistical analysis, carrying out multivariate stepwise regression analysis by taking the heart rate after exercise as a dependent variable and taking age and resting heart rate as independent variables, so as to obtain a double-drop target heart rate model; 5, establishing and calculating target heart rate matrix data, determining the age range to be 20-70 years old, determining the resting heart rate range to be 55-95 times per minute, and calculating the matrix data of the target heart rate lower limit value; the problem of correctly calculating the bull's-eye rate according with the medical physiology principle is solved.

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 a kidney disease diet calculation disc, and the disc comprises a main housing which is hollow and is used for providing an installation position for other structures of the calculation disc; the information display panel is arranged at the front part of the main shell, is provided with an upper subarea and a lower subarea, and is used for displaying protein numerical scales and a plurality of weight numerical areas; the gravity pointer mechanism is arranged in the main shell and used for weighing the weight of the metering piece and providing specific numerical values of the metering piece in cooperation with the information display panel; the magnetic block attaching mechanism is arranged on the lower side of the interior of the main shell and used for displaying protein content information of various kinds of food and providing a metering piece for the gravity pointer mechanism. By arranging the magnetic block attaching mechanism, food with the same protein content is combined into groups, the magnetic blocks with different weights and colors are used for distinguishing and indicating, the gravity pointer mechanism is matched for weighing, use is convenient, and good application value is achieved for rapidly calculating the protein content information of the food.

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 a disc tool for rapidly judging hypertension risk layering, and relates to the technical field of medical instruments. The tool comprises four layers of discs, namely a first disc, a second disc, a third disc and a fourth disc which are rotationally connected through a rotating shaft and are gradually increased in size, one side of each layer of disc is equally divided into three areas, and according to the blood pressure value of a patient, the number of risk factors and the target organ damage condition, the first three discs are rotated layer by layer to enable the corresponding areas to face forwards; and the highest dangerous color (red > yellow > green) in the previous three layers is matched with the dangerous grade of the fourth disc. According to the tool, layering judgment is completed within one minute through a mechanical multi-disc linkage and color coding system, the accuracy rate is 100%, the tool is suitable for basic medical institutions and family scenes, the problems of tedious manual operation and long consumed time are solved, and meanwhile the doctor-patient communication efficiency is improved through visual design.

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 embodiment of the application provides a thickness determination method and device, a storage medium and an electronic device, wherein the method comprises the following steps: determining a plurality of preset relative thicknesses of a target blade, and determining a spanwise position corresponding to each preset relative thickness; determining a spanwise position parameter table corresponding to the target blade according to the correspondence between each preset relative thickness and each spanwise position; and determining each target relative thickness corresponding to each spanwise position of the target blade according to the spanwise position parameter table and the plurality of preset relative thicknesses. According to the above method, the problem of poor aerodynamic efficiency caused by the fact that the vertical axis blade in the related art is mostly provided with a straight wing section or a twisted wing section can be solved.

The utility model discloses a diabetes mellitus diet treatment guiding device which comprises a disc and a guiding mechanism and is characterized in that the disc is evenly divided into four areas, and the interior of each area is evenly divided into a plurality of fan-shaped grooves, food marking grooves formed in the fan-shaped grooves, guiding grooves formed in the outer circle of each area and naming grooves formed in the outer sides of the guiding grooves; the guiding mechanism comprises a fixed shaft fixedly mounted in the middle of the disc, and a fat indicating dial, a vitamin indicating dial, a protein indicating dial and a carbohydrate indicating dial which are rotationally mounted on the fixed shaft from top to bottom in sequence. The utility model has the advantages of being capable of intuitively displaying the specific food of each nutrition component, convenient for medical staff to use and convenient for patients to identify.

The present invention belongs to the field of graphic monitoring technology and relates to a method for monitoring roll parameters in a PFD screen based on an FPGA. The method comprises the following steps: step 1: acquiring a PFD display screen and performing binarization processing on the display screen; step 2: calculating the coordinates of each pixel in the binarized PFD display screen image; step 3: searching for a horizon line feature in the binarized PFD display screen image; step 4: calculating a horizon line slope based on the obtained horizon line feature; and step 5: calculating a roll angle based on the horizon line slope.

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.