75results about How to "The principle of the method is clear" patented technology

The invention provides a determination method for a conglomerate oil reservoir polymer-flooding relative permeability curve. The determination method comprises the following steps that 1, the total water cut fw of a polymer-flooding oil well is calculated; 2, a first-level linear fitting relational expression y1=ax+b is established, and fitting parameters a and b are obtained; 3, the polymer-flooding oil-water relative permeability ratios Kro/Krw under different polymer-flooding water saturations Sw are calculated according to a relational expression Kro/Krw=me<-nSw> between the relative permeability and the polymer-flooding water saturations; 4, a second-level linear fitting relational expression y2=k1x1+k2x2+k3 is established, and fitting parameters k1, k2 and k3 are obtained; 5, the oil-water two-phase relative permeability Kro and Krw under the different polymer-flooding water saturations Sw are calculated; 6, a polymer-flooding oil-water two-phase relative permeability curve is drawn. According to the determination method for the conglomerate oil reservoir polymer-flooding relative permeability curve, the more precise conglomerate oil reservoir polymer-flooding relative permeability curve can be quickly obtained, the cost is reduced, the efficiency is high, and the workload is greatly decreased.

The invention discloses an assessment method of the degree of injury of concrete member crack fractals. The method mainly includes the following steps that image collecting equipment is installed nearthe surface of a concrete member for collecting member surface images in real time, the images are processed, whether or not cracks exist is recognized, if not, it is judged that no injury happens tothe structure, and if yes, a crack image is generated; the distances between the cracks are counted, a representative crack distance is obtained through calculation by means of a crack distance histogram, and a largest crack image is generated according to the representative crack distance; fractal dimensions of the collected actual crack image and the largest crack image are calculated through abox-counting method; through the crack image fractal dimensions, the degree of injury of the structure is calculated, and injury quantitative analysis is conducted on the structure. The invention provides the assessment method of the degree of injury of a concrete beam bridge based on the crack image fractal dimensions. The method can be applied to fast assessment of the degree of injury of a similar bridge through cracks on the corresponding structure surface.

The invention relates to a calibration method for an oil-water relative permeability curve and an oil displacing efficiency. The calibration method comprises the following steps: 1), performing an indoor oil-water relative permeability experiment, combining basic parameters of the experiment so as to obtain experimental data of a water ratio, cumulative oil yield, cumulative water yield and the like at different sampling times, and drawing an oil-water relative permeability curve before calibration; 2), fitting the cumulative oil yield and the cumulative water yield by adopting a Zhang type water driving curve with wide adaptability, and solving recoverable reserves; 3), plugging the recoverable reserves and the basic parameters of the experiment into an expression of residual oil saturation, and solving the residual oil saturation; 4), according to the residual oil saturation and an exponential expression of a water phase relative permeability curve in the straight line form, solving water phase relative permeability corresponding to the residual oil saturation; 5), replacing the residual oil saturation and the water phase relative permeability corresponding to the residual oil saturation in the oil-water relative permeability curve before the calibration with the solved residual oil saturation and the solved water phase relative permeability corresponding to the solved residual oil saturation, so that an oil-water relative permeability curve after calibration is obtained; and 6), calibrating the oil displacing efficiency according to the solved residual oil saturation.

The invention provides a photovoltaic array multi-peak maximum power point tracking method. According to the method, a power curve of an array is rapidly sampled based on the characteristics of a photovoltaic cell, power of each peak value point is estimated, the region where a global peak value is located is determined, single-peak MPPT is conducted in the region, and then global multi-peak MPPT is achieved. The method mainly includes the following steps of firstly, changing an output voltage of the array, and rapidly sampling the power curve of the array; secondly, analyzing the peak value condition of the array and estimating the size of peak values according to the characteristic parameters of a cell panel and sampling data, and determining the region where the global peak value is located; thirdly, conducting single-peak MPPT of a variable step size perturbation and observation method in the region; fourthly, repeating the method regularly or repeating the method when the actual power much deflects from the calculated maximum power. By means of the method, only a plurality of points on the power curve of the photovoltaic array are sampled based on the characteristic parameters of the photovoltaic cell panel, estimation values of all peak values can be obtained through simple operation, the region where the global peak value is located is rapidly positioned, and the method has the advantages of being clear in concept, simple in control structure, easy to implement in engineering and the like.

The invention discloses a quantum identity authentication method and an application method of the quantum identity authentication method in a quantum key distribution process. Mutual identity authentication between two participants can be realized. The security is based on a quantum mechanics basic principle and is independent of the computation capability of an attacker. When the method is realized, technologies such as quantum storage, quantum entanglement and multiparticle measurement do not need to be used, so the scheme is has the characteristics of simpleness and easiness in realization. Compared with the prior art, the method has the positive effects that the method provided by the invention is clear in principle, a realization method is simple, the security is high, and an entanglement source and multiparticle measurement and quantum storage technologies do not need to be used, so the realization can be achieved under an existing technological condition. Related authentication schemes can be applied to establishment of a high-security quantum identity authentication system with the quantum computation resistance capability and also can be applied to a current mainstream quantum key distribution system, thereby realizing the high-security identity authentication between two communication parties.

The invention relates to a new energy power station equivalent modeling method based on the interaction coefficient of power generating units. The method includes the following steps that first, the new energy power generating units connected to one feeder line in a new energy power station serve as the research objects, and the reference value of the interaction coefficient of the two new energy power generating units is determined as K0; second, according to the reference value K0 of the interaction coefficient of the two new energy power generating units, the number N of power generating unit groups on the feeder line and the number of the power generating units in each group are determined; third, an equivalent simplified model of the new energy power station is determined. According to the method, the difference between the transient characteristics of the new energy power generating units is taken into full consideration, and the equivalent simplified model of the new energy power station can accurately simulate the transient response characteristic of grid connection of the new energy power station.

The invention relates to a method for enhancing resolution of a seismic section through compensating variable resolution factor S transform complex time-frequency spectrum. Firstly an amplitude spectrum attenuation function changing with frequency is obtained by fitting through mean amplitude spectrum of the seismic section so that a time-frequency spectrum compensation factor and a compensation function are constructed. Then the time-frequency spectrum is adjusted by the compensation function. Finally, a seismic signal is reconstructed through S inverse transform so that an objective of enhancing resolution of the seismic signal is realized. According to the method, a Q factor does not need to be calculated, and the method is different from other methods for enhancing resolution of the seismic signal, such as inverse Q filtering and other deconvolution algorithms. The algorithm has fidelity and a great resolution enhancement function.

The invention discloses a PSS (Power System Stabilizer) phase compensation link time constant calculation method which comprises the following steps of: 1) listing a frequency-phase two-dimensional sampling data point set to be compensated by PSS; 2) obtaining a curve fitting function according to the phase compensation link transfer function phase-frequency characteristic expression of the PSS; 3) writing a nonlinear least square fitting program; and 4) substituting the sampling data point set and the curve fitting function into the nonlinear least square fitting program, obtaining the values of a plurality of time constants to be determined in the curve fitting function through operation and calculation, obtaining the phase compensation link time constant of the PSS, and completing the calculation of the phase compensation link time constant of the PSS. The PSS phase compensation link time constant calculation method based on nonlinear least square fitting has definite principle, simple calculation, good compensation effect, convenience and quickness in operation and good application prospects.

The invention relates to a method and a device for controlling the viscosity loss of an oil extraction waste water blended polymer. The method for controlling the viscosity loss of the oil extraction waste water blended polymer comprises: pumping oil extraction waste water into a vertical water collection tank by using a frequency-variable and speed-adjustable vortex pump, and at the same time, compressing the air into the vertical water collection tank to aerate oil extraction waste water in the vertical water collection tank; recording aeration time, monitoring the water content in an action time of the incoming water flow by using a dissolved oxygen tester jointed with a water discharge pipe, working out the variation relationship under a certain flow rate among an aeration pressure, an aeration time and oxygen content in treated water, and determining the optimal oxygen content of a waste water system; and under the guidance of the flow rate, pressure and time parameters corresponding to the optimal oxygen content, pumping the oil extraction waste water into the vertical water collection tank for aeration, and diluting mother solution of a polymer by using the aerated waste water. In the invention, the problem of vague reasonable oxygen content definition of waste water treated by an aeration technique is solved scientifically and effectively, and the method and the devicehave high operability and practicality.

The invention relates to a method for dividing multiple harmonic source responsibilities. The method includes the following steps: step S1, acquiring PCC point harmonic voltage data and harmonic source current data through measurement; step S2, intercepting the harmonic source current data and the PCC point harmonic voltage data, quantitatively expressing the correlation between PCC point harmonicvoltages and feeder line harmonic currents in each piece of data, and screening out a data segment in which fluctuation of the background harmonic voltage is smaller than a preset threshold; step 3,calculating a projection coefficient of the screened data segment, and further calculating a harmonic responsibility index. The method does not require phase information, and has simple calculation steps, engineering practicability and high popularization and application value.

The invention relates to the field of battery energy storage conversion power supply, in particular to a device and a method for improving charging and discharging performance of a power battery pack.In order to solve the technical problem, the controlled battery pack device is provided, a charging input/discharging output electric type controlled unit is connected in series in a battery pack toform an electric type controlled charging and discharging battery pack; the electric type controlled charging and discharging battery pack is limited in the charging and discharging electric type parameters, namely the basic electrical parameters are controlled, charging input/discharging output voltage works within an effective preset range, and the charging input/discharging output current within an effective preset range is limited. The device and the method have the beneficial effects that the power battery pack is in a straight-through charging and discharging state within a protection limit, volt-ampere impedance electrical parameters are in an uncontrolled and unadjustable free state, and intelligent internal control modular operation cannot be achieved are overcome.

The invention relates to a method for enhancing resolution of a seismic section through compensating J transform complex time-frequency spectrum. Mean amplitude spectrum of the seismic section is analyzed, an attenuation frequency band requiring energy compensation is confirmed, and an amplitude spectrum attenuation function changing with frequency is obtained through fitting so that a time-frequency spectrum compensation factor and a compensation function are constructed on the basis of the attenuation function. Then the complex time-frequency spectrum is adjusted by the compensation function. Finally, a seismic signal is reconstructed through inverse J transform so that an objective of enhancing resolution of the seismic signal is realized. The method has fidelity and a great resolution enhancement function.

The invention discloses a runoff rainwater quality dividing intercepting device and method based on the light sensation technology, and belongs to the technical field of drainage pipelines. The device is composed of an inner well and an outer well. An electric turnover plate which can rotate around a rotating shaft is installed in the inner well, a water inlet pipe, a water outlet pipe and an intercepting pipe are installed on the well wall, and a water pump, a light sensation detector, a flow sensor and a controller are installed in the interlayer space of the inner and outer wells. When the flow sensor detects that water exists in the water inlet pipe, a system is started automatically. The water pump feeds rainwater into the light sensation detector, and the transmission light intensity of the rainwater is measured and converted into electric signals; the cleaner the rainwater is, the higher the transmission light intensity is, and the larger the electric signal intensity is. When the electric signals are weak, the automatic control system indicates the electric turnover plate to rotate to be in the vertical state, and the rainwater is intercepted to the intercepting pipe and fed into a sewage pipe or a sewage pond; otherwise, the electric turnover plate is rotated to be in the horizontal state, the rainwater enters the water outlet pipe to be drained into a riverway. The device is linked with the water quality, accurate intercepting of high-concentration runoff rainwater is achieved, and the device is high in sensitivity, short in response time and convenient to operate and manage.

The invention discloses a method for confirming and comparing geographical position information by using a mobile terminal. The method comprises the steps of: step 1, setting an information error value; step 2, inputting geographical position information of a target building to a system by an information gatherer as comparison information; step 3, opening a picture acquisition and photographing module by the information gatherer, and starting to run a GPS (Global Position System) positioning module in the background synchronously; step 4, photographing the target building by the information gatherer, and at the same time, recording a geographical position as acquisition information when the information gatherer photographs by the GPS positioning module; step 5, uploading a picture and the acquisition information of step 4 to a server together by the information gatherer; and step 6, comparing the acquisition information with the comparison information by the system. The scheme of the method provided by the invention can effectively prevent a geographical information acquisition error of the building from causing losses to government departments and insurance industries.

The invention discloses a process-batch-model-based prediction method of an oxygen flow rate for a converter. A process state of a converter is calculated according to a production process and an operation system of the converter; on the basis of a standard batch curve of the converter, the process state of the converter is converted into a starting point of the converter at a current standard batch curve time point; and with a counter, an actual time point is calculated, thereby predicting an oxygen flow rate of the converter. Moreover, a corresponding standard curve can be switched automatically according to the number of times of reblowing of the converter, thereby improving prediction accuracy. Compared with the universal model, the response speed is fast and the prediction precision is high; and construction implementation can be carried out conveniently.

The invention discloses a precision micro displacement detection method and a device based on microlens moire imaging. The device is characterized by comprising a detection table and a micro displacement recording device, wherein the micro displacement recording device comprises a moire image forming mechanism, an image recording mechanism and an upper computer; the moire image forming mechanism comprises a micro teletext array located on the detection table and a microlens array arranged oppositely to the micro teletext array; the microlens array is arranged at one side, facing the micro teletext array, of the image recording mechanism; the image recording mechanism is connected with the upper computer; the image recording mechanism transmits a recorded image to the upper computer; and the upper computer extracts movable micro displacement for the image. A moire amplification image is used as a detection marker, and the micro displacements in four dimensions of (x, y, theta, z) can bedetected at the same time.

The invention relates to a method for enhancing resolution of a seismic section through compensating Morlet wavelet transform complex time-frequency spectrum, and aims at realizing seismic signal time-frequency decomposition and reconstruction. Morlet wavelet is improved by the method, based on which a Morlet wavelet inverse transform formula is constructed. The method comprises the steps that mean amplitude spectrum of the seismic section is analyzed, an attenuation frequency band requiring energy compensation is confirmed, and an amplitude spectrum attenuation function changing with frequency is obtained through fitting so that a time-frequency spectrum compensation factor and a compensation function are constructed on the basis of the attenuation function. Then the complex time-frequency spectrum is adjusted by the compensation function. Finally, a seismic signal is reconstructed through Morlet wavelet inverse transform so that an objective of enhancing resolution of the seismic signal is realized. The method has fidelity and a great resolution enhancement function.

The invention discloses a highway stake mark and longitude and latitude mapping method for locking key points. The method comprises the following steps: step 1, collecting information of a section ofhighway path through a GIS map; 2, setting stake mark values of head and tail coordinate points of the expressway path; 3, selecting key points needing to be locked on the GIS map, automatically collecting longitude and latitude, and filling pile number values; and 4, dividing the selected expressway path into a plurality of sections (L1... Li... Ln) according to the key points, and calculating the stake mark value mapped by the longitude and latitude coordinate points by adopting a zooming mode for each section. According to the method, the stake mark values of the GIS longitude and latitudecoordinates are calculated through a method of locking key point subsection scaling, mutual mapping of stake marks on the expressway and the GIS longitude and latitude coordinates is achieved, and particularly, the accuracy of the key point stake marks is guaranteed by locking key points (toll stations, bridges, tunnels, service areas, entrances and exits and the like).