49results about How to "For accurate calculations" patented technology

The invention discloses a method for measuring stator resistance of a motor. The method comprises the following steps that the angle of a current vector function is obtained; the motor is controlled to operate in a current closed-loop mode according to a first d-shaft current applied to a shaft d of the motor to obtain a first steady voltage command of the motor; the motor is controlled to operate in a current closed-loop mode according to a second d-shaft current applied to the shaft d to obtain a second steady voltage command of the motor; the stator resistance of the motor is calculated according to the first d-shaft current, the second d-shaft current, the first steady voltage command and the second steady voltage command. The method can accurately measure the stator resistance of the motor, measurement precision of the stator resistance is greatly improved, and therefore temperature detection precision of the motor can be improved. The invention further discloses a temperature detection method of the motor, a device for measuring the stator resistance of the motor, a temperature detection device of the motor and a motor control system with the device for measuring the stator resistance of the motor or the temperature detection device.

The invention relates to a method for intelligent temperature-control cultivation of multiple plants in a greenhouse and belongs to the technical field of temperature-control planting of various plants in greenhouses. First, a complete greenhouse plant data database is established according to plants of all varieties needing to be cultivated in each area of the greenhouse; a plant image information identification graph library is established; plant image information collection is performed, collected images are transmitted to a main console, and after the main console performs mode identification processing on collected image information, a corresponding instruction is sent to a temperature control unit according to mode identification processing results; and finally, the temperature control unit executes the received instruction. The reasonable, efficient and convenient solution is provided for suitable-temperature cultivation of various plants in the greenhouse, not only are spatial resources in the greenhouse saved, but also the survival rate of various plants is effectively improved, and the benefit of multi-variety cultivation of greenhouse plants is greatly improved.

The invention provides a method and device for displaying the electricity amount of a battery and an electronic device. The method includes the steps that an initial voltage value and an initial electricity amount value of the battery are obtained; after the battery is charged or discharged for preset time, the current voltage value and the current electricity amount value of the battery in the current state are obtained; if the current voltage value meets a first preset condition compared with the initial voltage value, and the current electricity amount value meets a second preset condition compared with the initial electricity amount value, the current voltage value and the current electricity amount value are displayed. According to correspondence relations between changes of the voltage and electricity amount of the battery in the processes of charging and discharging the battery, the electricity amount of the battery is obtained; under the condition that an electricity meter chip and other hardware circuits are not additionally arranged, the electricity amount of the battery is accurately calculated, the precious arrangement space for circuit boards inside terminal equipment is saved, furthermore, the cost is lowered, the freedom degree of hardware designing is increased, and product competitiveness is improved.

The invention discloses a battery micro-fault diagnosis method based on battery pack consistency evolution and belongs to the technical field of batteries. The method comprises steps of a plurality of historical charging section voltage data being used, a battery charging voltage curve (CCVC) transformation principle being utilized, battery pack consistency quantitative optimization calculation being carried out by using an adaptive inertia weight particle swarm algorithm, and the similarity matching degree (average Euclidean distance) of the battery charging voltage curve being used as a fitness value, and quantitative parameters representing the consistency condition of the battery pack are obtained; and then standardizing the consistency parameters to obtain a relative position Z-Score representing the relative position of the battery consistency in the battery pack, calculating the standard deviation of the relative position, and calculating the change score of the battery consistency; and carrying out battery micro-fault identification by using an abnormal value detection method based on a 3 sigma criterion, and finding out a fault battery with abnormal consistency evolution. The method is advantaged in that effectiveness of the fault diagnosis method is proved by using partial charging section data of a fault real vehicle battery data set to perform an experiment.

The invention discloses an ethylene supply device and a flow measuring method thereof. An ethylene gas cylinder is connected with a piston cylinder through a pipeline, the piston cylinder is connected with a test model through a pipeline, a compensation gas source is connected with the piston cylinder through a pipeline, wherein the ethylene gas cylinder is used for filling an ethylene gas into the piston cylinder, and connected to the test model through the pipeline; the compensation gas source is used for compensating compensation gas with stable pressure into the piston cylinder, wherein the compensation gas pushes a piston with stable pressure, so that the piston extrudes the ethylene gas with stable pressure to realize stable and quick supply of the ethylene. Meanwhile, the ethylene supply device precisely controls pressure of the ethylene gas which enters the piston cylinder through a solenoid valve, so that the working pressure is lower than a liquidation pressure point at a local temperature all the time, an ethylene phase change problem in a working process is avoided, the mass of the ethylene gas fed into a fuel cylinder is obtained by measuring the pressure and the volume of the ethylene gas in the piston cylinder, and the flow of the ethylene is accurately calculated and obtained by measuring ethylene outflow time.

The invention discloses a three-dimensional virtual organ volume calculation method, device, a storage medium and equipment, which belong to the technical field of computers. The method comprises steps: a Bezier surface intersected with the three-dimensional virtual organ is generated, wherein the three-dimensional virtual organ formed by voxel points comprises pathological tissues and non-pathological tissues separated by the Bezier surface, and the voxel points are acquired according to a two-dimensional image sequence; according to mapping points on the Bezier surface and the depths betweenthe voxel points mapped with the mapping points, the voxel points are classified to a first voxel point set in the pathological tissues or a second voxel point set in the non-pathological tissues; and the number of the voxel points in the first voxel point set is multiplied by the unit volume of the voxel points to obtain the volume of the pathological tissues, and the number in the second voxelpoint set is multiplied by the unit volume of the voxel points to obtain the volume of the non-pathological tissues. Thus, the volume calculation efficiency can be improved.

The invention discloses a calculating method for electric current field distribution of soil grounds in partitions and layers. The method comprises following steps: dividing interfaces of adjacent regions of soil in partitions and layers into multiple units; guiding one surface current to two sides of each unit; calculating surface current density on two sides of each unit by calculating equations according to electromagnetic field boundary conditions; using a complex image method to calculate electric fields at any position of soil in partitions and layers based on surface current density on two sides of each unit so that distribution of soil grounds in partitions and layers can be determined. The calculating method for electric current field distribution of soil grounds in partitions and layers has following beneficial effects: by guiding surface current to interfaces and combining with a complex image method, complex soil in partitions are equally taken as simple single-layer soil; the calculating method is easy by taking very complex soil structures; by using boundary conditions of electromagnetic fields, equations are created so that accuracy of calculating results is ensured; and the method is capable of analyzing electric field distribution at infinite distance.

The invention discloses a prompting method for the using time of air conditioner components. The prompting method comprises the following steps that the load running time and load changes of a presetload assembly in an air conditioner running state are acquired; using time parameters of the preset components of the air conditioner are determined according to the load running time and the load changes; and prompting is conducted according to the using time parameters of the preset components. The invention further discloses the air conditioner, display equipment, a control terminal and a computer readable storage medium. According to the prompting method for the using time of the air conditioner components, the air conditioner, the display equipment, the control terminal and the computer readable storage medium, the condition that the normal functions of the air conditioner are influenced due to the fact that the air conditioner components are not replaced in time can be avoided through prompting on the using time of the air conditioner components such as functional films and purifying filter elements.

The embodiment of the invention discloses a touch panel, a touch device and a touch position detection method. The touch panel comprises a plurality of touch electrode blocks; a plurality of auxiliarytouch electrodes; a module set area, wherein the touch electrode blocks are not overlapped with the module set area, and The plurality of auxiliary touch electrodes are positioned between the touch electrode block and the module setting area and are arranged along the edge of the module setting area; The touch position calculating unit which is used for determining the touch position of a touch object according to the induction quantity of the touch electrode block, the induction quantity of the auxiliary touch electrode, the gain value of the auxiliary touch electrode, the geometric center of the touch electrode block and the geometric center of the auxiliary touch electrode, Wherein the area of the auxiliary touch electrode is smaller than that of the touch electrode block. According tothe invention, the problem of inaccurate calculation of the touch position near the module setting area can be avoided.

The invention discloses a rapid time domain analysis method based on a second-order multi-edge response method, and aims to effectively solve a series of problems caused by a non-linear system in maximum distortion analysis. The rapid time domain analysis method comprises the following steps: (1) reading waveform response; (2) processing waveform response; (3) calculating a vector, namely, processing the read waveform response as the vector to be solved; (4) solving the vector, processing the data obtained in a former step into expected data, wherein the step is the core key content of the method; (5) removing a main cursor, and recalculating; (6) acquiring the expected data; (7) acquiring an eye pattern for evaluating the performance of a system. By using the rapid time domain analysis method, the situation in the signal transmission process can be relatively precisely calculated, problems of a conventional method can be avoided, and the problem of signal integrity in practical application can be relatively well solved. The rapid time domain analysis method can be popularized to a relatively high-class multi-edge response method, and thus the multi-edge response method can be systematically used in engineering practice.

The invention discloses an intelligent steel bar bender for machining a lower side cabinet hinge. The intelligent steel bar bender comprises a steel bar bender body, wherein a support box is mounted on the edge of the front side of the upper surface of the steel bar bender body; a bending driving mechanism is mounted in the support box; a receding hole is formed in the upper part of the support box in a penetrating manner; a driving shaft of the bending driving mechanism penetrates through the receding hole to be inserted into the lower end of a bending shaft; a limiting plate is mounted at the upper end of the bending shaft through a positioning nail, and the vertical side plate surface of the limiting plate faces leftwards; a steel bar straightening mechanism is arranged on the upper surface of the steel bar bender body; a discharging hole of the steel bar straightening mechanism leads to a bending feeding hole; and a control box and a control panel are further arranged on the upper surface of the steel bar bender body and both mounted at the right side of the steel bar straightening mechanism. The specific length of a transmission rack pulled by a pressure cylinder to move is calculated in the mode that the pressure cylinder drives a gear and the rack to do reciprocating motion, so that accurate calculation and bending operation of the central angle of the steel bar bending angle are achieved, and intelligent steel bar bending is achieved.

The embodiment of the invention provides a method, device and apparatus for determining the electric quantity of a battery and a storage medium. The method comprises the steps that: the real-time voltage of a target battery is determined; if the target battery is in a discharge state, the residual electric quantity of the target battery is determined based on the real-time voltage and a target voltage / electric quantity mapping relationship, wherein the target voltage / target electric quantity mapping relationship is the mapping relationship between the voltage of the target battery and the residual electric quantity of the target battery; if the target battery is in a charging state, the actual voltage of the target battery is determined based on the real-time voltage and a target chargingvoltage / actual voltage mapping relationship, and the remaining electric quantity of the target battery is determined based on the actual voltage of the target battery and the target voltage / electric quantity mapping relationship, wherein the target charging voltage / actual voltage mapping relationship is the mapping relationship between the charging voltage of the target battery and the actual voltage of the target battery. With the method provided by the technical schemes of the embodiment of the invention adopted, the problem of inaccurate electric quantity calculation caused by voltage electric quantity curve difference during charging and discharging can be avoided.

The invention discloses an overhead conductor current-carrying capacity calculation method and device and terminal equipment, and the method comprises the steps: applying a same constant heat source to a first aluminum ball and a second aluminum ball which are placed in a same real environment until the first aluminum ball and the second aluminum ball reach a temperature steady state; according to the steady-state temperature of the first aluminum ball, the heat balance equation and the current environment temperature, calculating the convective heat transfer coefficient of the first aluminum ball in the current environment, and then calculating the Reynolds number of the first aluminum ball; calculating the Reynolds number of the second aluminum ball according to the Reynolds number of the first aluminum ball and the Reynolds number mapping relation between the first aluminum ball and the second aluminum ball; and calculating the convection heat dissipation power of the second aluminum ball according to the steady-state temperature and Reynolds number of the second aluminum ball, obtaining the sunlight heat absorption power and sunlight intensity of the second aluminum ball in combination with the heat balance equation of the second aluminum ball, and finally obtaining the current-carrying capacity of the overhead conductor in combination with the heat balance equation of the overhead conductor. The method provided by the invention has the advantages of accurate result, good stability, easy implementation and low cost.

The invention discloses a method for establishing a label library, electronic equipment and a computer storage medium, and the method comprises the steps: crawling a plurality of labels through a crawler, and obtaining a label set; calculating the relevancy between the labels in the label set through the at least two relevancy calculation rules to obtain at least two relevancy grade results corresponding to the at least two relevancy calculation rules; according to the combination of the at least two relevancy grade results, determining a relevancy result between the labels in the label set; and classifying the tags in the tag set according to the relevancy result between the tags in the tag set to obtain a classified tag library. Therefore, the labels can be classified according to the relevancy among the labels, so that the labels can be quickly queried according to the classification result, and the query convenience of the label library is improved. In addition, various synonyms orsynonyms can be accurately identified, so that the tags in the tag library are stored in a classified manner according to relevancy conditions.

The invention belongs to the field of electrical engineering teaching, and particularly relates to an electrical virtual experiment method based on a PC platform, which is used for performing large-scale multi-time accurate simulating calculation and data acquiring, outputting and processing technology on a given system and a similar system via a PSCAD / EMTDC, so as to improve simulation efficiency and reduce teaching cost. The method comprises the following steps: initializing simulation data; automatically acquiring data; automatically recording information; automatically simulating; automatically drawing; automatically outputting data; automatically sending; and carrying out client processing. According to the method provided by the invention, simulation calculation of various models can be realized, and building of various models and accurate calculation can be realized by utilizing the abundant component library and the custom function of PSCAD / EMTDC; and for a similar model, repeated labor for replacing the original model can be avoided, and all that is needed is to indicate elements, node numbers and names required to be modified, modify a topological structure according to requirements, and complete modification automatically according to the method.

Disclosed are an image processing method and device. The method comprises: determining at least one second region for obtaining a first region on a first planar image, the second region being a regionon a second planar image, and the first planar image being obtained by mapping of a curved surface image, the curved surface image being obtained from at least one second planar image; determining amotion vector of the first region using a motion vector of the at least one second region; and encoding the first planar image using the motion vector of the at least one first region included in thefirst planar image. According to the technical solution of embodiments of the present application, more accurate vector information can be obtained, thereby enhancing video encoding quality.

The invention relates to an ion source mounting structure and an ion source device, which are applied to the ion source device, and the ion source device comprises at least one Hall ion source and atleast one hollow cathode; the hollow cathode is arranged at a set position away from the Hall ion source and provides neutralizing electrons for the Hall ion source; the mounting structure comprises an ion source base, an angle adjusting mechanism and a base, wherein the Hall ion source is installed on the ion source base, the ion source base is installed on the base through the angle adjusting mechanism, and the ion source base rotates through the angle adjusting mechanism so as to adjust the emission angle of the Hall ion source. According to the technical scheme, the angle of the Hall ion source can be adjusted according to the film coating requirement, so that the ion source coverage effect can be improved, and the use efficiency is improved.

The invention discloses an operation area statistics method of an agricultural plant protection unmanned aerial vehicle, which comprises the following steps: 1) summarizing operation data of a vehiclecompleting operations, the operation data comprising aircraft position information, a spraying amplitude and an unmanned aerial vehicle spraying switch sign; 2) performing noise reduction on the operation data so as to screen out obvious abnormal points; 3) removing non-spraying track sections with the spraying switch sign of the unmanned aerial vehicle being turned off in the operation track, and forming a plurality of discontinuous spraying track sections; 4) fitting the track into a straight line in combination with the aircraft longitude and latitude position information of each sprayingtrack section, and generating a spraying track buffer area corresponding to the spraying track section according to the effective spraying amplitude; and 5) fusing the buffer areas of each track by adopting a polygon merging technology, and calculating the area of the fused polygon. The operation area statistics method has the main functions of reducing errors and being high in calculation accuracy.

The invention provides an oil dry point prediction calculation method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring sample data; inputting the sample data into a preset neural network algorithm to generate a neural network model with at least one hidden layer; transforming each hidden layer of the neural network model by using a preset matrix to generate an agent model; the prediction module is used for inputting a calculation result of the agent model into a preset modeling program for packaging to obtain a prediction dry point; and inputting a preset component value in the preset modeling program into a prediction module for calculation to obtain a dry point prediction value. After a neural network model is generated by combining a large amount of sample data with an algorithm of a neural network, a corresponding agent model is developed based on parameters generated by the neural network model, and a corresponding online optimization software module is developed based on the agent model, so that accurate calculation and prediction of a dry point value are realized.

The invention discloses a device and method for obtaining the relative cabin average wind direction of a fan, and belongs to the field of wind power generation technologies and wind energy data errorcorrection methods. The device comprises a data detection device used for collecting relative cabin wind direction data and a fan twisting cable value, and a main controller used for correcting the collected relative cabin wind direction data and converting the corrected relative cabin wind direction data to obtain a relative cabin average wind direction. The method comprises a data acquisition step, a wind direction correction step and a conversion step. According to the method for obtaining the relative cabin average wind direction of a fan, the accurate relative cabin average wind directioncan be obtained, and therefore the yaw wind alignment precision of the fan is improved, wind energy capture of a fan wind wheel is improved, the power generation amount of the fan is increased, and apower curve is improved.

The invention discloses a method for testing the content and consumption of an electrolyte in a battery, which comprises the following steps that the weight mvolatile of volatile components is obtained, weighing is conducted to obtain the mass m2 of the battery, the battery is broken and dried until the weight is constant, weighing is conducted to obtain the mass m3 of the battery, and mvolatile=m2-m3; a dissolving solution is obtained, the dried battery is infiltrated with a high-purity solvent with the fixed mass m4, and the salt and the non-volatile solvent in the battery are dissolved through the high-purity solvent to obtain the dissolving solution; the weight mnon-volatile of a non-volatile substance is obtained, the ratio a of the non-volatile substance to the high-purity solvent in the dissolving solution is detected through a gas chromatography, and mnon-volatile is equal to a*m4; the weight msalt of the salt is obtained, the salt concentration c1 in the dissolving solution is detected by adopting ion chromatography, wherein msalt=(1+a)m4*c1; and the content melectrolyte of the electrolyte is obtained, and melectrolyte=mvolatile+mnon-volatile+msalt. The method has the advantage that the detected and calculated electrolyte content is more accurate.

The invention relates to the technical field of automobile circuit production, and discloses an intelligent automobile wire harness processing technology. The technology comprises the following steps: respectively taking out a wire and a steel cable by a required length through a front-end wire clamp and cutting off the wire and the steel cable, and then respectively dragging the cut wire and the cut steel cable to corresponding lengths and positions on each linear guide rail through the front-end wire clamp; gathering and collecting the wire and the steel cable through the concentrator, and stably clamping the gathered wire harness; and finally performing glue winding operation on glue winding operation the wire harness. The whole automobile wire harness intelligent winding machining process is precisely controlled through the controller, a program is written into the controller, it can be guaranteed that the machining procedures are carried out orderly through the program and all control opportunities of the controller, and automatic control over production of automobile wire harnesses can be guaranteed through the program; errors caused by manual operation can be effectively reduced through automatic control, factory errors of automobile wire harnesses are reduced, and the quality of factory products is guaranteed.

The invention discloses a three-dimensional virtual organ volume calculation method, device, a storage medium and equipment, which belong to the technical field of computers. The method comprises steps: a Bezier surface intersected with the three-dimensional virtual organ is generated, wherein the three-dimensional virtual organ formed by patches comprises pathological tissues and non-pathologicaltissues separated by the Bezier surface; according to mapping points on the Bezier surface and the depths between vertices in patches mapped with the mapping points, the vertices are classified to afirst vertex set in the pathological tissue patches or a second vertex set in the non-pathological tissue patches; the volume of a prism formed by the mapping points and the patches mapped with the mapping points is calculated; the volumes corresponding to all vertices in the first vertex set are added to obtain the volume of the pathological tissues, and the volumes corresponding to all verticesin the second vertex set are added to obtain the volume of the non-pathological tissues. Thus, the volume calculation efficiency can be improved.

The invention relates to an elevator emergency stop people trapping fault detection method based on multi-model fusion. The elevator emergency stop people trapping fault detection method comprises the steps that S1, acceleration data, audio data and image data in an elevator car in the elevator running process are collected; S2, data preprocessing is performed on the acceleration data and the audio data, and acceleration features in the acceleration data and audio features in the audio data are respectively extracted; S3, abnormal acceleration detection is carried out based on the acceleration features and an abnormal acceleration detection result is obtained, and abnormal sound detection is carried out based on the audio features and an abnormal sound detection result is obtained; and S4, the abnormal acceleration detection result and the abnormal sound detection result are fused, and whether an emergency stop fault alarm is generated for an elevator or not is judged based on the fusion result. The scheme can be realized only based on sensors and in cooperation with monitoring camera equipment, so that the use cost and the installation difficulty are greatly reduced.

The invention discloses a cement mortar splitting tensile test tool which is mainly used for performing a splitting tensile strength test on cement mortar. The cement mortar splitting tensile test tool comprises a base, a telescopic sliding sleeve and a spring mechanism; a sample position is arranged on the base, the vertically-arranged sliding sleeves are arranged on the two sides of the sample position respectively, the bottom ends of the sliding sleeves are matched with a base transverse grooves formed in the upper portion of the base, and two symmetrical stepped holes are formed in the sample position on the base; each stepped hole is internally provided with one spring mechanism, the top end of each spring mechanism protrudes out of the upper surface of the base, the upper end of thesliding sleeve is provided with a first notch, and the lower end of the sliding sleeve is provided with a second notch. According to the invention, the test sample does not incline, and the steel filler strip does not slide laterally, so that the problems of inaccurate test result and potential safety hazard caused by inclination of the test sample and lateral sliding of the steel filler strip inthe test process are solved.