39results about How to "The calculation method is reasonable" patented technology

The invention discloses a method for detecting a target protruding from a plane based on double viewing fields without calibration. The method is carried out in the following steps: setting a scene marker; collecting images; detecting and working out four corresponding point pairs of the marker; solving a homography matrix according to the four corresponding marking point pairs; carrying out homography transformation for a right view; adjusting illumination brightness, and then carrying out registration and superposition; and judging the object protruding from the plane, thus obtaining the final judgment result. By using the method provided by the invention, the object protruding form the plane in a three-dimensional space can be obtained from a binocular viewing field, or two viewing fields with transformed attitudes in a monocular camera, without calibrating the camera; and the detection method has a reasonable operational method, high computing speed, and can meet the requirement of a three-dimensional vision system on accuracy and instantaneity of target detection.

The invention relates to the technical field of risk assessment of electric power systems and specifically relates to method for assessing comprehensive risks of a power transmission line in multiplemeteorological disasters. The method for assessing comprehensive risks of the power transmission line in multiple meteorological disasters comprises the following steps: comprehensive trip-out risk probability of a power transmission line is obtained; the comprehensive trip-out risk probability is used for determining risk probability of reclosing success, risk probability of reclosing failure andsuccessful forced power transmission and risk probability of reclosing failure and unsuccessful forced power transmission; probability of comprehensive fault risks of the power transmission line is determined; according to a comprehensive coefficient of influence factors, probability of comprehensive risks of the power transmission line is determined; according to a risk and harm value, the comprehensive risks of the power transmission line are determined. Via the method, the comprehensive risks of the line are assessed, and pertinent prediction and theory support can be provided for a commander of an electric power system.

The invention discloses an intelligent device and method for correcting trapezoidal defects of a slab section in real time in an online manner. The intelligent device comprises a crystallizer and a sector, and further comprises an infrared measuring device and a crystallizer cooling water system, wherein the crystallizer is arranged at the top end of the sector; the infrared measuring device comprises a first infrared measuring device and a second infrared measuring device; the first infrared measuring device is arranged on the outer arc of the sector at the tail end; the second infrared measuring device is arranged on the inner arc of the sector at the tail end; the crystallizer cooling water system comprises a crystallizer cooling water operation module and a crystallizer cooling water PLC control module; the first infrared measuring device and the second infrared measuring device are respectively electrically connected with the crystallizer cooling water operation module; the crystallizer cooling water operation module is electrically connected with the crystallizer cooling water PLC control module; and the crystallizer cooling water PLC control module is used for controlling the amount of cooling water entering and exiting from the inner and outer arcs of the crystallizer.

The invention discloses a theoretical calculation method for the water content of a mixed material of a cement stabilized macadam road pavement, and aims to determine an optimal water content of the mixed material of the cement stabilized macadam road pavement, and the optimal water content of the mixed material can be relatively precisely and reasonably determined with comparison with an indoor testing result. The theoretical calculation method comprises the following steps: performing theoretical calculation on the standard water rate of cement in a test part used in an indoor test, the water absorption rate of an aggregate and the water rate of a middle gap of the mixed material, converting calculated results into the water amount of the cement in the test part, the water absorption amount of the aggregate and the water amount of the middle gap of the mixed material so as to determine an actual optimal water amount of the mixed material, and further converting the optimal water amount of the mixed material into the optimal water content of the mixed material. By adopting the theoretical calculation method, the situation that the optimal water content of the mixed material can be only determined by using an indoor testing method can be changed, the proportioning rate of the water content of the mixed material of the cement stabilized macadam road pavement can be relatively and reasonably designed, the construction quality can be improved, rework can be avoided, and the production cost can be lowered.

The invention discloses a method for detecting a target protruding from a plane based on double viewing fields without calibration. The method is carried out in the following steps: setting a scene marker; collecting images; detecting and working out four corresponding point pairs of the marker; solving a homography matrix according to the four corresponding marking point pairs; carrying out homography transformation for a right view; adjusting illumination brightness, and then carrying out registration and superposition; and judging the object protruding from the plane, thus obtaining the final judgment result. By using the method provided by the invention, the object protruding form the plane in a three-dimensional space can be obtained from a binocular viewing field, or two viewing fields with transformed attitudes in a monocular camera, without calibrating the camera; and the detection method has a reasonable operational method, high computing speed, and can meet the requirement of a three-dimensional vision system on accuracy and instantaneity of target detection.

The invention discloses a method for determining a construction land area influence factor weight value by using a neural network algorithm, which comprises the following steps of: expanding originalsample data, dividing the original sample data into two groups, subtracting the sample data of the first group from the sample data of the second group in sequence to form new expanded sample data, and determining the construction land area influence factor weight value. By adopting the method of firstly grouping and then calculating the difference values in a one-to-one correspondence manner, thesamples are expanded, and the importance degree of each influence factor to the construction land area is not changed. In addition, a new BP neural network is established to train an expanded sampleand extract related rules, and MIV is considered as one of the indexes with the best variable correlation in the neural network. The calculation method for determining the influence factor and the construction land area weight coefficient is more reasonable and scientific.

The invention discloses a method for calculating the design thickness of a 12-bolt tower foot slab, comprising: determining the diameter of the anchor bolt according to the uplift force on the tower foot slab; calculating the minimum width of the tower foot slab according to the structural requirements according to the diameter of the anchor bolt; The uplift force distribution coefficient of the bolt holes calculates the uplift force of each anchor bolt, and verifies whether the strength of each anchor bolt meets the force requirements: if the force requirements are met, increase the grade of the anchor bolts and re-according to the structure It is required to calculate the minimum width of the tower foot plate; if the force requirement is not met, further calculate the minimum thickness t required for the tower foot plate under tension la ;Calculate the minimum thickness t required for the foot plate under compression ya , choose t ya and t la The greater value of the two is taken as the design thickness t of the tower foot plate. The present invention considers the influence of uneven force on the foundation bolts and the influence of stress concentration near the bolt holes, and truly reflects the force mechanism of the tower foot plate.

The present invention discloses a calculation method for calculating the thickness of the loosened zone of the soft coal and rock of a deep roadway and a measurement device based on the method. The calculation method comprises the steps of (1) defining the distance between the initial position of a measuring point and the surface of a roadway to be r and the displacement of the measuring point to be u, and constructing an expression of u varying with r, wherein the measuring point is in the drill hole of the soft coal and rock of the deep roadway and is within the range of the loosened zone, u0, k1 and k2 are coefficients; (2) measuring the varying process of the u of more than two measuring points along with r, and calculating the values of k1 and k2; (3) inputting the obtained values of k1 and k2 into the following equation of L=-k2ln(20k2 / k1), and calculating the value of the thickness L of the loosened zone of the soft coal and rock of the deep roadway. The calculation method is simple, reasonable and easy to implement, and high in calculation accuracy. Obvious errors caused by the empirical estimation can be avoided. Meanwhile, the measurement device is simple in structure and convenient in operation, which can be well be applied to the calculation method of the present invention. In this way, the engineering detection on the thickness of the loosened zone of the soft coal and rock of the deep roadway and the real-time display of the thickness are realized.

The invention discloses a build-in length and uplift value calculating method applicable for a narrow foundation pit. The calculating method comprises the step (1) of judging whether a foundation pitis the narrow foundation pit, a supporting structure of the foundation pit comprises support piles and inner supports, if the ratio of the foundation pit depth to the foundation pit width is larger than 1, and the influence of frictional resistance between the supporting structure and soil mass in the pit on the stress and deformation state of the soil mass in the pit prevails, the foundation pitis the narrow foundation pit; and the step (2) of obtaining the build-in length of the foundation pit according to the condition that the unloading stress of the bottom surface position of the foundation pit is equal to the frictional resistance between the soil mass at the position and the supporting structure when the pit is evacuated to the pit bottom in one time. According to the method, the interaction between the supporting structure and the soil mass is introduced; and the method can reflect the influence of the soil mass property on the build-in length and the uplift value fully, and can be applied to foundation pits of any shape.

The invention discloses a tunnel strengthening treatment method and a support structure based on the positions of dissolving cavities. The tunnel strengthening treatment method includes the following steps that firstly, the nearest distance L between the dissolving cavities and a tunnel is determined; secondly, the safety thickness H of a karst region of the tunnel is determined; thirdly, the safety of the tunnel affected by the dissolving cavities of the karst region is judged; and fourthly, different tunnel support structures are adopted according to the safety of the tunnel. The tunnel strengthening treatment method and the support structure based on the positions of the dissolving cavities have the following beneficial effects that firstly, a calculation method is reasonable, consideration is comprehensive, design is reasonable, the construction speed is high, the use effect is good, and different support methods and structures are adopted according to the different safety conditions of the tunnel; and secondly, the corresponding support structures are selected according to the positions of the dissolving cavities, and the construction and safety operation problems of passing of the part, in the karst region, of the tunnel can be effectively solved.

The invention relates to a water turbine in a hydropower station, and discloses a calculation method for the cavitation coefficient of a vertical-axis axial-flow paddle-type hydraulic turbine power station, which can more reasonably calculate the cavitation coefficient of a vertical-axis axial-flow paddle-type hydraulic turbine power station to meet new hydropower engineering requirements. The inventive method is as follows: determine the specific rotational speed of the axial flow propeller type water turbine, and described specific rotational speed is denoted as n s ; Determine the maximum application head of the axial flow paddle turbine, and the maximum application head is denoted as H max , and judge H max range; according to H max The formula for calculating the cavitation coefficient of the power station in the corresponding range calculates the cavitation coefficient of the power station, and the cavitation coefficient of the power station is denoted as σ p , the formula for calculating the cavitation coefficient of the power station in the range is: when H max ≤30m, when H max When the distance is greater than 30m, the present invention is applicable to the calculation of the cavitation coefficient of a vertical-axis axial-flow paddle turbine power station, and can better meet the requirements of new hydropower projects.

The invention discloses a calculation method for the second lining support structure of a super-large-span cavern, which comprises the following steps: a. obtaining the upper limit value of the deformation of the cavern by performing fitting analysis on the monitoring measurement data; b. calculating The remaining deformation of the cavern; c. Calculate the sliding force and anti-sliding force of the unstable block above the cavern; d. Calculate the pressure of the unstable block acting on the second lining support structure; e. The remaining deformation and the acting pressure of the unstable block are used as input conditions, and act on the second lining support structure at the same time, and the stress state of the second lining support structure is obtained through the calculation software. In the present invention, the remaining deformation and the acting pressure of the unstable block are used as input conditions to calculate the secondary lining support structure, which conforms to the deformation characteristics and stability mechanism of the super-large-span cavern; the thickness of the secondary lining support structure obtained by the present invention is reasonable, It avoids problems such as increased cost, difficulty in pouring, and extended construction period caused by the excessively large lining thickness of the super-large-span cavern.

The invention relates to a method for calculating the impact factor of books that can be lent out by a library, which can effectively solve the problem of book circulation data basis and guide readers to read reference basis in library management. The data can be brought into the formula to get the influence factor If of books that can be borrowed by the library in the current month. The method of the present invention is connected with various management systems of the library and used for database data extraction and recording. The method is novel and unique, the calculation method is reasonable, and it has statistical It can be used for big data statistics and network development, it can be used to grasp the reading life of newly released books, it can be used to make statistics on readers' reading hotspots, and it is a reference for book management, publishing, reading, purchasing, etc. Innovations in Computational Methods.

The invention relates to a method for calculating the power generation cost of a perovskite solar cell. The method comprises the following steps: calculating the perovskite cell kilowatt-hour cost COE: calculating the value of total expenditure converted from the ith year to the beginning in the life cycle of a photovoltaic power station, and equally dividing the total investment cost of the photovoltaic power station and the total power generation capacity in the life cycle to obtain the average cost at any moment in the life cycle; calculating the initial investment I0 of the power station;calculating the expenditure Ii of the ith year in the service life of the power station; calculating the generating capacity Ei of the ith year in the service life of the power station. The beneficialeffects of the invention are that: the method is suitable for large-scale production; according to the method, the manufacturing cost of the perovskite cell is considered; on the basis of parameterssuch as photovoltaic construction cost, operation and maintenance cost, financial cost, depreciation cost and annual effective generating capacity; a PMT (Payment) function and an NPV (Net Pretent Value) function are utilized to calculate the power cost per kilowatt hour, and a detailed, reasonable and accurate calculation method is provided for the calculation of the power generation cost of theperovskite solar cell.

The invention provides a pruning evaluation method based on fruit tree canopy illumination calculation. The method includes: in each of the two years in the first N years of the pruning evaluation year, after the same spring pruning and germination of the sample tree and the tree to be tested, the three-dimensional point cloud data of the sample tree canopy are obtained in different position cubes The number of box counting dimensions in the grid and the light intensity or relative light intensity in each of the cube grids of the sample tree in the stable period of the leaf curtain establish a mathematical model; the leaf curtain of the tree to be measured in the current year is predicted and pruned by the mathematical model The results of light intensity or relative light intensity distribution in the stable period can be used to evaluate whether the fruit trees are pruned reasonably. The method has the advantages of rapidity, convenience, reasonable calculation method, high accuracy, and is suitable for automatic programming, and can also greatly improve operation efficiency and reduce labor intensity of operators.

The invention discloses a calculating method for an extra large span chamber second liner supporting structure. The calculating method comprises the following steps that firstly, an upper limit valueof the deformation of a chamber is obtained by carrying out fitting analysis on monitoring measurement data; secondly, the residual deformation of the chamber is worked out; thirdly, the downward sliding force and the sliding resistant force of an unstable block on the upper portion of the chamber are worked out; fourthly, the pressure, acting on the second liner supporting structure, of the unstable block is worked out; fifthly, the residual deformation and the action pressure of the unstable block are taken as input conditions and act on the second liner supporting structure simultaneously,and the stress state of the second liner supporting structure is worked out through calculation software. According to the calculating method, the residual deformation and the action pressure of the unstable block are taken as the input conditions to carry out calculation of the second liner supporting structure, and the method conforms to the deformation feature and the stabilizing mechanism of the extra large span chamber; and the obtained thickness of the second liner supporting structure is reasonable, and the issues such as increasing of the manufacturing cost, pouring difficulty and prolonging of the working period due to large lining thickness of the extra large span chamber are avoided.

The invention relates to an ancient document unified logical retrieval method based on index relation, in particular to the logical combination of any logical relations contained in an input text string extracted from text retrieval, and belongs to the technical field of document retrieval. The logical retrieval method concretely comprises the steps of constructing an index system, counting the number of times of a sentence appearing in a fixed sentence length, establishing corresponding rules for logical relations, extracting the logical relation contained in an input text string, and combining rules thereof; displaying results and outputting the six technical steps. According to the logical retrieval method, different retrieval requirements of the user can be satisfied based on the understanding for the logical relation, and user experience is greatly improved.