36results about How to "Easy calculation" patented technology

The invention discloses a proportion detecting algorithm and system for cracks in a road surface image. A three-dimensional data matrix of a road surface is read; denoising processing is conducted on the three-dimensional data matrix; road surface cracks are recognized in the denoised three-dimensional data matrix, and a final crack image is obtained; a crack seed point is extracted from the final crack image to conduct region growth, and a crack binary image is obtained; the crack binary image is equally divided into a plurality of squares; the proportion of the cracks in the road surface image are calculated. According to the proportion detecting algorithm and system, the proportion of the cracks in the whole image can be quickly and accurately obtained as long as the collected three-dimensional data matrix is input.

The present invention relates to a method for contactless measurement of a relative position of a magnetic field source, which produces a magnetic field and a magnetic field sensor in relation to each other. The present invention further relates to a corresponding displacement sensor. According to the present invention, the magnetic field sensor detects at least two spatial components (Bz, By) of the magnetic field and a position signal is produced from the measured components. The method comprises the following steps of calculating the position signal based on a quotient of the two magnetic field components; and correcting, before the quotient is calculated, the magnetic field component, which extends in a movement direction between the magnetic field source and the magnetic field sensor.

The present invention relates to a vehicle mileage accumulation method. The method mainly comprises using a smart phone to obtain a vehicle identification sign, wherein the smart phone comprises a positioning system; comparing the vehicle identification sign, the positioning system and a vehicle dynamic database to obtain an aboard position; obtaining the vehicle identification sign through the smart phone; comparing the vehicle identification sign, the positioning system and the vehicle dynamic database to obtain a debus position; calculating the aboard position and the debus position to obtain a mileage distance. The present invention also comprises a vehicle mileage accumulation system. Thus, when a user rides a public vehicle, riding mileage can be accumulated to convert goods and services, and the user can be encouraged to ride public vehicles.

The invention discloses a solar photovoltaic power station design method and system. The method comprises the following steps of: S1, analyzing a solar resource of a place where a substation is located, carrying out month-by-month horizontal plane-inclined plane radiation quantity conversion calculation and carrying out optimization design on a photovoltaic module inclination angle; S2, determining technical indexes of photovoltaic modules and inverters according to a design requirement, and carrying out optimization calculation on series-parallel number of the photovoltaic modules; S3, determining photovoltaic module arrangement according to design and calculation results in the steps S1 and S2, and carrying out optimization calculation on photovoltaic array arrangement; and S4, carrying out photovoltaic power station cable design, array arrangement and site plane design on the photovoltaic array arrangement optimization calculation result obtained in the step S3. The system corresponds to the method. According to the method and system, the photovoltaic power station design calculated amount can be remarkably decreased and the calculation error probability can be decreased; and the method and system are operated on the basis of Excel software, so that the method and system are simple to calculate and operate, low in cost, intuitional, easy to lean and easy to popularize.

The invention discloses a vehicle engine inlet simulation calculation method and apparatus. The method comprises the steps of determining inlet valve lift test points of an inlet of a vehicle engine, and determining inlet simulation models corresponding to the inlet valve lift test points; performing gridding on the inlet simulation models corresponding to the inlet valve lift test points; setting calculation domain boundary conditions corresponding to the gridded inlet simulation models, and setting a calculation solver by utilizing a fluid mechanics theory; and according to the calculation domain boundary conditions and the gridded inlet simulation models, performing calculation by utilizing the calculation solver to obtain simulation results corresponding to the inlet lift test points. The method is simple in calculation operation, short in cycle, low in cost and high in calculation precision; a calculation model is relatively flexible to build; the method and the apparatus can be used for comparative optimization among multiple inlet schemes; the scheme with the best inlet performance is selected according to the results; and engine design can be assisted.

The embodiment of the invention provides a congestion data determination method and a congestion data determination device. The method comprises the following steps: according to acquired road sectiondata, determining feature information of a road section, wherein the feature information comprises average speed, traffic stream density, speed threshold value and a data effective value; according to the feature information, determining congestion data through a predetermined congestion model, wherein the congestion model comprises a nonlinear regression model and a predetermined quasi-logisticregression model. Thus, based on multiple feature information of the road section, determination of the congestion data can be executed based on the nonlinear regression model and the predetermined quasi-logistic regression model, a problem of accuracy rate of the congestion data determined based a single index is overcome, accuracy rate of the congestion data is improved, and calculation operations are simplified.

A measurement device and a measurement method for a roll angle of a bullet body belong to the field of signal measurement. The measurement device comprises the bullet body. The measurement device and the measurement method are characterized in that the measurement device comprises a signal processing module arranged in the bullet body and a plurality of infrared diode pairs which are uniformly arranged on the external surface of the bullet body; the infrared diode pairs are arranged in one longitudinal section of the bullet body and form an infrared diode pair ring; each infrared diode pair comprises an infrared transmitting diode and an infrared receiving diode; and each infrared diode pair is electrically connected with the signal processing module. Through uniformly arranged the infrared diode pairs on the surface of the bullet body, a modulated wave is transmitted through the infrared transmitting diode wherein, and then the modulated wave is reflected and is received by the infrared receiving diode of the same infrared diode pair, thereby generating a pulse sequence signal, and calculating the roll angle of the bullet body by the signal processing module. The measurement device for the roll angle of the bullet body has advantages of simple structure, high response speed, wide measurement range, high convenience in mounting and debugging, easy calculation, easy operation and high suitability for popularization.

The invention discloses a method and a device for assembly integration. The method comprises collocating a calculator program needed invoking in advance, collocating input parameters in an input file and input parameters in an output file, saving configuration information of the calculator program, configuration information of the input file and configuration information of the output file into a configuration file, reading input parameters in the configuration file and displaying, collocating the displayed input parameters again, writing the reconfiguration input parameters in the input file, invoking the calculator program to calculate the input file written with the reconfiguration input parameters, writing output results in the output file through the calculator program, reading the output file of the calculator program and displaying. Therefore, automation level and efficiency of engineering calculation and design are improved, calculation operation of a user is simplified, and work load of the user is reduced.

The invention discloses a human resource calculator SAAS platform based on social safety and accumulation fund. The invention discloses a human resource calculator SAAS platform based on social safetyand accumulation fund. The system comprises a social insurance and accumulation fund policy template and a social insurance and accumulation fund calculator. The difficulty of social safety and accumulation fund calculation results in the human resource industry is reduced; simplified human resource industry process, checking the correctness of social safety and accumulation fund data of the human resource industry; for adjustment of national social insurance policies and accumulation fund policies, due to the fact that the human resource industry has regional characteristics, the human resource industry constructs own social insurance rules and accumulation fund rules to respond to the national social insurance policies and accumulation fund policies, and only simple configuration setting is needed when the national policies change; employees in the human resource industry can easily calculate social safety and accumulation fund. The time of staff in the human resource industry is saved, the human cost of enterprises is saved, the development of enterprise core services is accelerated, and the enterprise process is accelerated.

The invention discloses a transmission line icing type prediction method based on a vertical temperature profile. The method comprises the following steps of 1, historical detection data screening and parameter setting; 2, effective data record screening; 3, temperature profile image drawing; 4, region area ratio calculation; 5, icing type area threshold determination; 6, temperature profile area ratio and ground parameter prediction; and 7, icing type prediction. The beneficial effects are that the invention fills the gap that no transmission line icing type prediction technology based on vertical atmospheric temperature profile analysis is available, is suitable for predicting all icing types of a power grid, and is strong in practicality; the invention establishes a threshold of an area by using historical icing data of the prediction area, so as to predict the power grid icing type of the area, and the accuracy is high; and the invention obtains a transmission line icing type by prediction and provides an important reference base for ice melting and ice eliminating of a power grid in the winter power grid icing period.

The embodiment of the invention discloses a high-power direct-current electric energy metering method and system for a vehicle-mounted power battery. The method comprises the steps of: carrying out self-discharge pre-experiment on a power battery, and building a multivariate relation model between the self-discharge electric quantity W and the environmental parameters of an electric vehicle; dividing the load of the power battery into a plurality of coupling modules which are connected in parallel according to function association, and calculating the linear current of each coupling module inreal time by utilizing an electric energy metering unit; monitoring the initial total electric quantity C of the power battery after single charging in real time, and calculating the total energy consumption of the coupling modules in the use process of the power battery; and according to the self-discharge electric quantity W obtained by the multivariate relation model and the total power consumption Q of all the coupling modules, calculating the residual electric energy q of the power battery after single charging. According to the scheme, the real-time dynamically-changed self-discharge electric quantity of the power battery can be determined in real time, the total self-discharge amount of the power battery after single charging is calculated, and the accuracy of statistics of the battery remaining capacity of the power battery is improved.

The invention discloses a multipurpose supermarket shopping cart which comprises a cart body and moving wheels arranged below the cart body. A handle is fixedly arranged at the upper end of one side of the cart body, a base board is arranged on the handle, and the two ends of the base board are fixedly provided with a left baffle and a right baffle respectively. A sliding plate is arranged between the left baffle and the right baffle, and a sliding block is fixedly connected with the lower end of the sliding plate. A supporting plate is arranged below the sliding plate, a sliding groove mutually matched with the sliding block is formed in the supporting plate, and a plurality of tightness fixing clamping grooves matched with the sliding block are formed in the sliding groove.

The invention discloses a method for calculating the cutting length of grinding teeth of grinding equipment provided with straight tooth elements, and belongs to the technical field of mechanical design and manufacturing. Firstly, according to whether tooth type parameters of a straight tooth element change in the reference length direction or not and whether a grinding area is full of grinding teeth or not, a discrete formula or an integral formula for grinding tooth cut-off length calculation is selected; and then selecting a cut-off length calculation formula suitable for different devices for calculation according to the device types. The method is suitable for calculating the cut-off length of the grinding teeth of equidistant straight tooth grinding discs of various structures and various devices provided with straight tooth elements, and the cut-off length of the grinding teeth is reasonably calculated according to the physical definition of the cut-off length of the grinding teeth, so that the actual requirements are met; meanwhile, the method is clear in calculation process and convenient to use, parameterized calculation of the grinding tooth cut-off length can be achieved, the grinding tooth cut-off length serves as a key parameter of strength characterization of the pulping process, and an important theoretical basis is provided for design and improvement of pulping equipment and optimization control of the pulping process.

The embodiment of the invention discloses a method for metering the electric quantity of a vehicle-mounted power battery of an electric vehicle. The method comprises the following steps of: carrying out battery power-down detection in a no-load state of a flameout power battery of an electric vehicle, and counting the self-discharge quantity of the battery; dividing the load of the power battery into a plurality of series coupling function modules, and counting the power consumption of each series coupling function module in real time by using a metering unit; and calculating the endurance time of the battery according to the power consumption of each series coupling function module in unit time. According to the scheme, the residual electric quantity of the electric vehicle can be calculated by superposing the power consumption capacities of the function modules and the self-discharge of the power battery, the endurance time of the power battery under the current power consumption canbe predicted, and the effect of giving an early warning and timely charging the electric vehicle is achieved.

The invention provides a method, system and device for calculating the effective bit width of digits and a storage medium, and the method comprises the steps: converting the digits with the same effective bit width in a preset standard bit width into corresponding feature digits, so as to obtain all feature digits in the preset standard bit width; determining a standard value so as to enable the standard value and a result obtained by processing all the feature numbers to meet uniform distribution, and obtaining a corresponding mapping list according to the standard value; converting a to-be-calculated number into a corresponding feature number, and processing the feature number and the standard value to obtain a to-be-processed result; and determining the effective bit width of the number to be calculated from the mapping list according to the result to be processed. Compared with a current bit-by-bit comparison method, the method has the advantages that the calculation times can be greatly reduced, and hardware implementation is easy; not only can the effective bit width of the number be quickly obtained, but also the solving time is fixed.

The invention relates to a multifunctional ruler with multiplication and division functions, wherein one side of ruler is protrude with external barrel; the inner side of external barrel is inserted with rotational internal barrel; the external and internal barrels and the ruler are arranged with number and display windows used in multiplication and division calculations. The invention has the advantages that: it can avoid wetting the scale lines; the ink will not contact the hand; and the invention can avoid bending and damaged, to improve its service life. And the invention can be used in anywhere to improve the learning efficiency, while the horizontal displacement of ruler Y can be measured to check the result. And it can be used to measure angle and divide angle, and draw round.

The invention discloses a method of determining explosive power of an automotive safety airbag. The method includes the steps of (10) determining an explosive reaction formula, to be specific, determining the explosive reaction formula according to the types of sodium azide substances in the safety airbag; (20) calculating fixed pressure explosion heat, to be specific, using formation heat to calculate fixed pressure explosion heat according to Hess's Law; (30) calculating fixed volume explosion heat, to be specific, calculating fixed volume explosion heat according to the relationship betweenthe fixed volume explosion heat and the fixed pressure explosion heat; (40) calculating TNT equivalence conversion coefficient, to be specific, calculating the TNT equivalence conversion coefficientof a gas-producing agent according to the theory of energy similitude and the fixed volume explosion heat of TNT explosives under the same conditions; (50) calculating TNT equivalence, to be specific,calculating mass of the gas-producing agent according to molar weight of the gas-producing agent, and calculating the corresponding TNT equivalence of the gas-producing agent in combination with theTNT equivalence conversion coefficient. The method herein has good applicability and high accuracy.