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37results about How to "Easy calculation" patented technology
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Proportion detecting algorithm and system for cracks in road surface image
ActiveCN104537651AImprove efficiencyAccurate detectionImage enhancementImage analysisRoad surfaceThree dimensional data
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.
Owner:CCCC FIRST HIGHWAY CONSULTANTS
Method for contactless measurement of a relative position by means of a hall sensor
ActiveCN103988052AHigh precisionEasy calculationMagnetic measurementsUsing electrical meansNuclear magnetic resonanceNon contact measurement
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.
Owner:TYCO ELECTRONICS AMP GMBH
Vehicle mileage accumulation method and system thereof
InactiveCN102706359AEasy calculationTo achieve the purpose of accumulating mileage distanceRecord carriers used with machinesDistance measurementVehicle dynamicsEngineering
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.
Owner:吕元刚
Solar photovoltaic power station design method and system
InactiveCN107464038ACalculation is intuitive and convenientSmall amount of calculationPV power plantsResourcesCalculation errorPhotovoltaic power station
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.
Owner:GANSU NATURAL ENERGY RES INST (UNITED NATIONS IND DEV ORG INT SOLAR TECH PROMOTION & TRANSFER CENT)
Vehicle engine inlet simulation calculation method and apparatus
InactiveCN107491574AEasy calculationShort cycleGeometric CADDesign optimisation/simulationInlet valveCalculation methods
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.
Owner:BORGWARD AUTOMOTIVE CHINA CO LTD
Congestion data determination method and congestion data determination device
ActiveCN109859477AImprove accuracyEasy calculationDetection of traffic movementNonlinear regressionReal-time computing
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.
Owner:HANGZHOU FRAUDMETRIX TECH CO LTD
Method for calculating two-phase transformation volume ratio of metal material by measuring area
ActiveCN110443006AEasy to operateCalculation method is simpleComplex mathematical operationsComputational problemThermal expansion
The invention belongs to the field of physical materials, and particularly relates to a method for calculating a two-phase transformation volume fraction through numerical differentiation on the basisof a lever method. The method comprises the following steps: determining the data of the thermal expansion amount of the material along with the temperature change in the two-phase transformation process, exporting a numerical differential curve of the phase change volume fraction along with the temperature change by adopting a lever method, and calculating the volume fraction of the two-phase transformation by processing the numerical differential curve. The method can solve the calculation problem of the phase volume fraction when the phase transition temperature intervals are not overlapped or partially overlapped, the calculation principle of the method is different from the calculation principle of a previous method, the calculation operation process (especially the self-consistent operation process) is simple, and the calculation result of the method is theoretically more accurate than that of the previous method. The method can be extended to accurately calculate the volume fraction of each phase during three-phase or multi-phase transition of the material.
Owner:JIANGXI UNIV OF SCI & TECH
Method for predicting octane number of gasoline
PendingCN113705021AEasy calculationSimple calculationTreatment with plural serial stages onlyDesign optimisation/simulationAlkaneCoke
The invention provides a method for predicting the octane number of gasoline. The method comprises the following steps of firstly, collecting the sample data in a catalytic cracking gasoline refining desulfurization device, including the raw material octane number RON, the saturated hydrocarbon (alkane+cycloalkane) content, the aromatic hydrocarbon content, a bromine value, the coke content (the spent adsorption property), the coke content (the regeneration adsorption property), a hydrogen-oil ratio and the like, and then bringing the sample data to an octane number prediction model for calculation, so that the octane number prediction value can be obtained. The method for predicting the octane number of gasoline provided by the invention is simple to operate and is high in accuracy, and can replace a traditional experimental determination method to a certain extent.
Owner:SOUTHWEST PETROLEUM UNIV
Measurement device and measurement method for roll angle of bullet body
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.
Owner:XIAN KEYWAY TECH
Method and device for assembly integration
ActiveCN102779038AEasy calculationImprove automation and efficiencySpecific program execution arrangementsCalculatorAutomation
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.
Owner:BEIJING RAINFE TECH
Human resource calculator algorithm based on social safety and accumulation fund and SAAS platform
PendingCN111784273AEasy calculationShorten the timeFinanceOffice automationCalculatorEngineering management
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.
Owner:四川省瑞人网络科技有限公司
Transmission line icing type prediction method based on vertical temperature profile
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.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
High-power direct-current electric energy metering method and system for vehicle-mounted power battery
ActiveCN111812401AImprove accuracyReal-time determination of self-dischargeElectrical testingElectrical batteryElectric vehicle
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.
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +2
Power grid icing starting time calculation method based on air movement calculation
The invention discloses a power grid icing starting time calculation method based on air movement calculation. The method comprises the following steps of: 1, observation data obtaining; 2, data grid processing; 3, frontal line point screening; 4, secondary high barometric pressure edge point screening; 5, distance calculation; 6, cold air moving speed calculation; 7, frontal line point moving time calculation; and 8, icing time calculation. The method has the following advantages: the method fills the technical blank of lack of a power grid icing starting time calculation method based on air movement calculation at present, is applied to icing starting time prediction of all easily iced points of a power grid, and is simple in calculation operation and high in practicality. Stress conditions of frontal line points are taken into consideration, a movement equation of the frontal line points is established, the movement time is calculated, the icing starting time is calculated accordingly, and thus the accuracy is high. The power transmission line icing starting time obtained through calculation provides a scientific reference basis for disposition of deicing work during a power grid icing period in winter.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
Engineering calculation method of flexible thin tube sheet
ActiveCN101847172BMeet cost saving requirementsCalculation results are fastSpecial data processing applicationsTemperature differenceEngineering
The invention discloses an engineering calculation method of a flexible thin tube sheet, comprising the following steps: determining the wall temperature of a heat exchange tube and the design temperature of a channel box; according to the technological condition, optimizing the tube pitch of key structural parameter and the wall thickness of the heat exchange tube; analyzing and processing a calculation result; if secondary stress is out of limit under the combined action of the tube, shell side pressure and temperature difference load, forbidding considering the calculation result of nonexistent operation working condition; and if the primary stress is out of limit under the combined action of the tube and the shell side pressure, converting the secondary stress into the primary stress for controlling. The invention has the positive effect on making up the shortcomings because of adopting two calculation methods for designing flexible thin tube sheets for a long term, i.e. the defects of limited applicable range or long consumed calculation time, high calculation cost and complex calculation process. The method has wide applicable range, high calculation speed, simple calculation process and safe and reliable calculation result and conforms to the requirements of national energy saving and consumption reduction as well as cost saving for enterprises.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND
Method and system for detecting crack ratio in pavement image
ActiveCN104537651BImprove efficiencyAccurate detectionImage enhancementImage analysisRoad surfaceBinary image
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.
Owner:CCCC FIRST HIGHWAY CONSULTANTS
Multipurpose supermarket shopping cart
InactiveCN103434549ANovel structureEasy to calculateHand carts with multiple axesSupermarket shopping cartEngineering
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.
Owner:肖荣芳
Grinding tooth cut-off length calculation method for pulping equipment equipped with straight tooth element
InactiveCN114351495AClear principleEasy calculationPulp beating/refining methodsTooth grindingMechanical design
Owner:SHAANXI UNIV OF SCI & TECH
Prediction method of transmission line icing type based on temperature vertical profile
ActiveCN106203715BEasy calculationPracticalForecastingSpecial data processing applicationsAtmospheric temperaturePower grid
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.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
Method for contactless measurement of relative positions by means of Hall sensors
ActiveCN103988052BHigh precisionEasy calculationMagnetic measurementsUsing electrical meansMagnetic fieldNuclear magnetic resonance
The invention relates to a method for contactless measurement of the relative positions of a magnetic field generating source (102) and a magnetic field sensor (100) relative to each other. The invention also further relates to a corresponding displacement sensor. According to the invention, a magnetic field sensor (100) detects at least two spatial components (Bz, By) of the magnetic field and generates a position signal from the measured components. The method comprises the steps of: calculating a position signal based on the quotient of two magnetic field components; and correcting the magnetic field component extending in the direction of motion between the magnetic field source (102) and the magnetic field sensor (100) before calculating the quotient value.
Owner:TE CONNECTIVITY GERMANY GMBH
Method for metering electric quantity of vehicle-mounted power battery of electric vehicle
ActiveCN111812522AIntegral relationship is simpleEasy calculationElectrical testingIn vehicleAutomotive engineering
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.
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +2
Method, system and equipment for calculating digital effective bit width and storage medium
PendingCN114268322ABit wide fastQuickly get the bit widthCode conversionAlgorithmHardware implementations
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.
Owner:SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
A blockchain-based cloud storage data integrity detection method
ActiveCN112565264BReduce computational difficultyAvoid collusionKey distribution for secure communicationEncryption apparatus with shift registers/memoriesData integrityCloud storage
The invention discloses a block chain-based cloud storage data integrity detection method and system. The user terminal mainly uses a lattice signature algorithm to sign files, which can effectively resist the threat of quantum computing and ensure that the signature is not cracked. Then, by building a Merkle tree, the signature value of the file is aggregated into a Merkle tree and combined with the cuckoo filter, on the one hand, it can meet the requirements of dynamic file operation, and on the other hand, the complex signature verification process is simplified to a simple one. The query process of the cuckoo filter significantly improves the verification efficiency. At the same time, the introduction of the blockchain network to replace the traditional TPA can effectively avoid the collusion between the TPA and the other party, improve the transparency of information, and further improve the security of the scheme.
Owner:亿海兰特科技发展(长沙)有限公司
Ruler possessing multiplication and division function
InactiveCN1824522AImprove learning efficiencyEasy calculationMeasuring wheelsStraightedgesEngineering
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.
Owner:尹良俊
A Dynamic Calculation Method of Reservoir Flood Control Benefit Based on Mathematical Statistical Model
The invention relates to a dynamic calculation method based on a mathematical statistics model and applied to flood control benefit of a reservoir and belongs to the technical field of water conservancy economy. Quantization of the flood control benefit is always a problem difficult to solve. The dynamic calculation method comprises the following steps: step 1, the concept of the flood control benefit growth rate is introduced, and a conversion factor between the flood control benefit of a flood occurrence year and the flood control benefit of a base year is solved; step 2, a proper mathematical statistics model is selected according to data including the peak discharge, the volume and corresponding flood control benefit of each historical flood, correlation among the peak discharge, the volume and the flood control benefit is searched, and a mathematical expression is established; step 3, a flood control benefit dynamic calculation model based on mathematical statistics is established according to the mathematical expression established in the step 2 and the conversion factor solved in the step 1, the peak discharge and the volume of an occurring flood are put into the model, and the flood control benefit value of the reservoir during the flood is obtained through calculation. Calculation is simple and convenient, the precision of a calculation result is high, and the calculation result better aggress with an actual situation.
Owner:GUIZHOU WUJIANG HYDROPOWER DEV +1
A method for measuring the power of a vehicle-mounted power battery of an electric vehicle
ActiveCN111812522BIntegral relationship is simpleEasy calculationElectrical testingPower batteryElectrical battery
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +2
Calculation method of maximum power of linear generator for high-speed maglev train
ActiveCN110909296BEasy calculationThe calculation result is accurateComplex mathematical operationsElectric propulsionSuperconducting CoilsCondensed matter physics
Owner:BEIJING JIAOTONG UNIV
A method and system for measuring high-power DC electric energy of a vehicle-mounted power battery
ActiveCN111812401BImprove accuracyReal-time determination of self-dischargeElectrical testingElectrical batteryElectric vehicle
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +2
Method of determining explosive power of automotive safety airbag
PendingCN109559785AImprove adaptabilitySave manpower and material resourcesChemical processes analysis/designHess's lawNuclear engineering
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.
Owner:上海中交水运设计研究有限公司 +1
A method and device for determining congestion data
ActiveCN109859477BOvercome the problem of accuracyImprove accuracyDetection of traffic movementSimulationOperations research
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.
Owner:HANGZHOU FRAUDMETRIX TECH CO LTD
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