32results about How to "Comprehensive calculation results" patented technology

The invention discloses a distribution system security region boundary calculation method based on a feeder interconnection relationship. The method comprises the following steps of establishing a distribution system security region model based on the feeder interconnection relationship according to main transformer N-1 and feeder N-1 constraint conditions; calculating a distribution system security region boundary according to the distribution system security region model; and evaluating the security of a distribution system through the distribution system security region boundary. The method has the advantages that the existing security region boundary calculation method is enabled to be further precise, the interconnection relationship between main transformers and feeders can be simultaneously reflected, main transformer N-1 and feeder N-1 faults are simultaneously calculated, the method provides a theoretical support for more precise, safe and high-efficiency operation of a distribution network, the online real-time security monitoring, defense and control of the distribution system are enabled to become more comprehensive and precise, and preconditions are provided for further improving the level of line and main transformer load rate to a precise N-1 security limit. Under the background of future intelligent power grids, the method has a great application prospect.

A supercritical flood risk analysis method comprises the steps of 1, determining the supercritical flood discharge on the water yield side for non-engineering measures of different projects; 2, determining the supercritical flood discharge on the water quality side for non-engineering measures of different projects; 3, determining the supercritical flood discharge on the coupling water yield-water quality side for non-engineering measures of different projects; 4, establishing a supercritical flood risk fuzzy subjection function for non-engineering measures of different projects (water yield side) and different water quality levels (water quality side) so as to obtain a supercritical flood risk fuzzy subjection function for the coupling water yield-water quality side; 5, bringing forward supercritical flood risk measurement with non-engineering measures of different projects, water quality difference and multiple variables considered comprehensively based on the Pearsion-III distribution theory and information entropy theory, and determining the supercritical flood risk. The method is higher in adaptability and logical, operation is easy, calculating efficiency and calculating precision are high, and a calculation result is more comprehensive and more scientific.

The present invention discloses a metro shield tunnel forming tunnel portal measurement method, which comprises: 1, field data acquisition: 101, selecting measurement points, wherein M measurement points are selected on the inner edge of the tunnel portal to be measured according to requirements, and 102, measuring the measurement point position, wherein three-dimensional coordinates of each measurement point are measured, and measurement results are recorded; and 2, indoor data processing: 201, calculating the distance between each measurement point and the center line of the design path, and comparing the difference value, 202, calculating the end wall offset and the flatness, and 203, comparing the fitting tunnel portal center and the designed tunnel portal center, wherein the process comprises projecting, projection point grouping, circle fitting, fitting tunnel portal center point acquiring, tunnel portal center fitting precision calculating, and tunnel portal center offset acquiring. The metro shield tunnel forming tunnel portal measurement method has characteristics of simple step, reasonable design, easy achieving and good use result, and problems of high labor intensity, probable forming tunnel portal plane deviation calculating, and poor use effect of the existing tunnel forming tunnel portal measurement method can be solved with the metro shield tunnel forming tunnel portal measurement method of the present invention.

The invention discloses a method for testing tire performance. The method comprises the steps of installing TPMS equipment on a vehicle, obtaining tire pressure data and GPS data of the vehicle periodically and uploading the data to a cloud platform. Tread pattern depths are manually measured and are uploaded to the cloud platform with sensor IDs of the corresponding tires, and the cloud platformobtains the mileage wear ratio of tread pattern wear values of all tires within all time periods to a corresponding travelled mileage through calculation, and shows factors influencing the mileage wear ratio of the tires. The cloud platform calculates a remaining traveled mileage and the total mileage of the whole life period of the tires according to the mileage wear ratio and the remaining treadpattern depths of the tires, and measures the tire performance as a whole. The method for testing the tire performance has the advantages that the tire temperature, the tire pressure, and the tire state of the tires can be monitored in real time, and the influence of the tire state, the travelling road condition and the travelling speed on the mileage wear ratio of the tires is further detailed.In the meanwhile, the tires are bonded with the sensors, and it can be effectively avoided that the tire data is mixed.

An urban green land vegetation information datamation accurate determination method comprises the steps of collecting high-resolution panchromatic images, hyperspectral images and thermal infrared images in a target area, obtaining approximately continuous spectral reflectance of different plant species, enhancing the ability to detect ground feature attribute information, and combining texture features of the high-resolution panchromatic images to accurately position and recognize plant contours, and detecting the plant temperature through thermal infrared data. The method can determine and identify plant species types, obtain geographical position, area, chlorophyll, carotenoid, anthocyanin and temperature information of urban green land plants, and also can obtain crown projection areasand crown projection perimeters of trees and shrubs. An object-oriented greenbelt vegetation accurate measurement method is proposed for the first time, and urban greenbelt information in a large-area range can be rapidly and accurately measured. Compared with most inversion models based on pixels, the method has the advantages that the calculation result is faster, more accurate and more comprehensive.

The invention discloses a two-dimensional runoff restoration method for separating the influences of human activities. The two-dimensional runoff restoration method comprises the following steps: firstly, constructing a boundary-pansystems binary automaton model; secondly, determining input, output and internal state elements of a human activity-basin underlayer system; thirdly, calculating the influence quantity of the human activities on basin underlayer conditions; fourthly, obtaining indirect influence quantity of the human activities on the runoff; fifthly, determining input, output and internal state elements of a human activity-runoff system meeting the consistency of the underlayer conditions; sixthly, solving direct influence quantity of the human activities on the runoff on the basis of the constructed system analytic method for separating direct influences of the human activities on the runoff; seventhly, calculating natural runoff volume meeting the consistency of the basin underlayer conditions according to the calculated indirect influence quantity of the human activities on the runoff and the direct influence quantity of the human activities on the runoff. The two-dimensional runoff restoration method has the advantages of simpleness, easiness for operation, high calculation speed, high precision, and comprehensive and scientific calculation result.

The invention provides a power grid operation mode planning, checking and analyzing system which comprises a data management module, a simulation calculation module and a power grid visualization interaction module. The power grid visualization interaction module is connected with the data management module and the simulation calculation module. The data management module is provided with a data importing interface, and the simulation calculation module is provided with a parallel computing interface and a result output interface. The power grid operation mode planning, checking and analyzing system brows and corrects power grid operation data, displays tide information on a geographic map, checks and analyzes tides, temporary stability, small interference, short circuit currents and the like, and analyzes mode data in detail; planners are released from manual data entry which is tedious, dull, nonstandard and prone to error at present, scientific nature, reliability and work efficiency of power grid planning are improved.

The invention provides a Live broadcast room recommendation method, a storage medium, an electronic device and a system, which relate to the big data recommending field and can recommend a recommending live broadcasting room of user preference according to a designated live broadcasting room, the method in particular comprising the following steps: calculating quality scores of N live broadcastingrooms according to a preset live broadcasting room quality scoring process, wherein N is an integer greater than 1, and the N live broadcasting rooms are a live broadcasting room group to be scored.A similarity of a common label between each of the live broadcast groups to be rated and a designated live broadcast is calculated. The similarity between the quality score and the common label is inputted into the preset recommendation index algorithm to obtain the recommendation index of each live broadcast in the inter-broadcast group to be graded. A live broadcast room whose recommendation index exceeds a preset recommendation index threshold is used as the recommendation live broadcast room, or the recommendation index is sorted, and a preset number of live broadcast rooms in front of thesorting are used as the recommendation live broadcast rooms. The invention can better calculate the similarity between live broadcasts.

The invention relates to the technical field of civil engineering, in particular to a three-dimensional static calculation method for an overhead pile plate structure, which comprises the following steps establishing a three-dimensional static model of the pile plate structure; inputting the load parameters into the three-dimensional static model of the pile plate structure, and outputting a deformation result and a stress result of the pile plate structure; and checking the deformation result and the stress result, and determining final structure parameters of the pile plate structure. According to the three-dimensional static force calculation method of the overhead pile plate structure, the three-dimensional static calculation of the overhead pile plate structure is realized, the load parameters are input into a three-dimensional static model of the pile plate structure, the deformation result and the stress result of the pile plate structure are output, the three-dimensional spacedeformation, multi-directional stress and stress concentration conditions of the structure can be reflected, comprehensive and detailed calculation data and results are provided for designers, and thefinal structure parameters of the pile plate structure are determined by checking the deformation result and the stress result.

The invention relates to a rock engineering technology, and aims to provide a rock structure surface roughness coefficient refined representation method. The method comprises the steps of obtaining morphology data of a rock structural surface; preprocessing the three-dimensional point cloud data; performing grid thinning processing on the point cloud data; performing regular sorting operation on the coordinate data; calculating JRC values of all structural plane contour lines in the point cloud data; and drawing a JRC numerical value frequency distribution histogram. According to the method, the three-dimensional point cloud data reflecting the topographic characteristics of the whole rock structural surface are obtained through the three-dimensional scanning technology, and the obtained JRC calculation result is more comprehensive, objective and accurate. The method can obtain the law of the mean value, the variance, the variation coefficient and the anisotropy of the JRC data, and provides technical support for comprehensively and accurately evaluating the JRC value and the shear strength of the rock structural plane. Accurate and rapid batch calculation can be realized by combining programming, and the method can be widely applied to rock structure surface roughness and shear strength parameter evaluation involved in various rock engineering projects.

The invention discloses a method for establishing an accumulation body slope numerical calculation model by adopting a stone throwing mechanism. The method comprises the steps of selecting typical parts of an accumulation body, and shooting images by adopting a digital camera to collect a batch of dimension stones; extracting the outlines of the dimension stones through a digital image processingtechnology, and establishing a dimension stone library; then, according to the range of the accumulation body provided by survey data, constructing a real calculation model of the accumulation body byadopting the stone throwing mechanism; and finally, converting the real calculation model into a graphic interaction file, and constructing model data of corresponding geotechnical material for analysis and calculation. According to the design, the real calculation model of the accumulation body is constructed by constructing the dimension stone library, calling the data of the dimension stone library and randomly putting the dimension stones, so that the real simulation of the composition of the accumulation body is realized, the calculation accuracy of the stability of the accumulation bodycan be effectively improved, and besides the stability coefficient of the accumulation body can be calculated, relevant information parameters such as stress and strain of the accumulation body can be obtained, so that good practicability and popularization prospects are achieved.

The invention provides an address recommendation method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining address information, extracting the features of the address information, and outputting the feature scalar of each piece of address information, and comprehensively evaluating different features of the input feature scalar by using the structural advantages of a binary tree and the interpretability of a tree model through a pre-trained training model, outputting the confidence coefficient of the address information, sorting the address information according to the confidence coefficient, and outputting an address list. According to the method and device, multivariate features of the address information are introduced, a diversified feature set is adopted, all features are comprehensively referenced, the revenue masses are expanded into a whole, the recommendation effect can serve users of different behavior modes, the calculation result is more comprehensive, and sorting is more intelligent and flexible.

The invention relates to the field of underground water resource monitoring, and discloses a regional average underground water level monitoring method, which comprises the steps of dividing a to-be-monitored water level research region into regional calculation units of different levels; collecting monitoring well information and basic information in the to-be-monitored water level research area;calculating the groundwater level and groundwater level variation of the final-stage region calculation unit to obtain groundwater levels and groundwater level variation of all final-stage region calculation units; iteratively calculating the groundwater level and groundwater level variation of the calculation unit of each level of region in sequence according to the groundwater levels and groundwater level variation of all final-level region calculation units; and obtaining the groundwater level and groundwater level variation of the to-be-monitored water level research area. According to the method, the regional average underground water level and the underground water level change value can be quickly and accurately calculated according to the monitoring data of the underground water level monitoring well in the region, and basis and support are provided for management work such as underground water treatment effect evaluation and assessment.

The invention discloses an underground water level variable amplitude evaluation system after underground water over-mining treatment, and the system comprises a collection module which is used for collecting the initial monitoring information of a to-be-monitored water level research area; a processing module connected with an acquisition module and used for processing the initial monitoring information to obtain target monitoring information; and an evaluation module connected with a processing module and used for evaluating the water level amplitude of the to-be-monitored water level research area according to the target monitoring information to obtain an evaluation result. The monitoring information of the to-be-monitored water level research area is collected and processed, the underground water level change value of the to-be-monitored area is rapidly and accurately calculated, and basis and support are provided for management work such as underground water treatment effect evaluation and assessment.

The invention relates to a pore-exploration and pore-forming device and method for soil stratum ground stress testing and application of the pore-exploration and pore-forming device and method. The pore-forming device comprises a negative pressure soil pumping mechanism, a soil pumping pipe and a soil cutting mechanism, wherein the soil cutting mechanism communicates with the negative pressure soil pumping mechanism through the soil pumping pipe, and soil cut by the soil cutting mechanism is pumped and then discharged by means of negative pressure difference of the negative pressure soil pumping mechanism. According to the pore-exploration and pore-forming device and method for soil stratum ground stress testing and the application of the pore-exploration and pore-forming device and method, steel shells are adopted for wall retaining, a specially made cutter is adopted for cutting soil, pores can be formed quickly through a geological pore-exploration and pore-forming technology of pumping soil through negative pressure, the disturbance on stratums is small, the pore diameter range can be adjusted, the construction cost is low, the construction safety is high, operation is easy andconvenient, and the pore-exploration and pore-forming device and method are suitable for unsaturated sandy soil (such as medium sand, fine sand and mealy sand) with the moisture content lower than 40% and unsaturated soil stratums (such as silt, silty clay and loess) with the moisture content lower than 50%. In addition, a soil stratum ground stress testing method provided by the invention is simple and reliable, can detect out initial ground stress, has great significance on numerical calculation of the soil stratums, and ensures that soil stratum numerical calculation results are more accurate and comprehensive.

The invention provides a carbon emission calculation method for passing vehicles in a road maintenance operation region, which belongs to the technical field of carbon emission and comprises the following steps: determining characteristics of the road maintenance operation region and traffic characteristics; determining the upstream road traffic capacity, the operation region road traffic capacity and the downstream road traffic capacity of the road maintenance operation region; dividing the running state distribution of vehicles passing through the construction region in the road maintenance operation analysis period; carbon emission composition of vehicles in different running states in the road maintenance operation region is determined; calculating and summarizing carbon emissions formed by carbon emissions of vehicles in different running states in the road maintenance operation region; calculating carbon emissions in different operation states in the road maintenance operation analysis period; calculating the carbon emission of the detouring vehicle in the road maintenance operation analysis time; and calculating the carbon emission of passing vehicles in the maintenance operation region in the road maintenance operation analysis period. The method is used for effectively supporting selection of road low-carbon maintenance materials with different traffic characteristics, machine and tool management, traffic organization and accurate formulation of a maintenance low-carbon emission reduction scheme.

The invention discloses a two-dimensional runoff restoration method for separating the influences of human activities. The two-dimensional runoff restoration method comprises the following steps: firstly, constructing a boundary-pansystems binary automaton model; secondly, determining input, output and internal state elements of a human activity-basin underlayer system; thirdly, calculating the influence quantity of the human activities on basin underlayer conditions; fourthly, obtaining indirect influence quantity of the human activities on the runoff; fifthly, determining input, output and internal state elements of a human activity-runoff system meeting the consistency of the underlayer conditions; sixthly, solving direct influence quantity of the human activities on the runoff on the basis of the constructed system analytic method for separating direct influences of the human activities on the runoff; seventhly, calculating natural runoff volume meeting the consistency of the basin underlayer conditions according to the calculated indirect influence quantity of the human activities on the runoff and the direct influence quantity of the human activities on the runoff. The two-dimensional runoff restoration method has the advantages of simpleness, easiness for operation, high calculation speed, high precision, and comprehensive and scientific calculation result.

The invention discloses a power transmission line iron tower tension calculation method, which comprises the steps of obtaining parameters of a wire under an installation working condition and an accident working condition, and initializing the tension of the nth-gear wire, wherein n is greater than or equal to 1 and less than m, m being the number of gears of a tower; enabling the preset tensionof the (n + 1) th-gear wire to be equal to the tension of the nth-gear wire; calculating the vertical load of the nth tower, the length variation of the nth gear of wire and the offset of the nth insulator string; judging whether the offset is less than the effective string length or not, and if not, performing re-initializing; if yes, calculating the tension difference of the nth tower and the calculated tension of the (n + 1) th gear wire; judging whether the difference between the calculated tension of the (n + 1) th gear of wire and the preset tension is less than a threshold value or not,and if not, performing reinitializing; if yes, storing a calculation result; judging whether n is smaller than m or not, if n is smaller than m, setting n to be equal to n + 1, and repeatedly calculating the tension of the next gear of wire; and if n is greater than or equal to m, judging whether an end condition is met, if so, ending the operation, and otherwise, performing re-initializing. According to the invention, the tension difference of a tower can be measured more accurately.

The invention discloses a distribution system security region boundary calculation method based on a feeder interconnection relationship. The method comprises the following steps of establishing a distribution system security region model based on the feeder interconnection relationship according to main transformer N-1 and feeder N-1 constraint conditions; calculating a distribution system security region boundary according to the distribution system security region model; and evaluating the security of a distribution system through the distribution system security region boundary. The method has the advantages that the existing security region boundary calculation method is enabled to be further precise, the interconnection relationship between main transformers and feeders can be simultaneously reflected, main transformer N-1 and feeder N-1 faults are simultaneously calculated, the method provides a theoretical support for more precise, safe and high-efficiency operation of a distribution network, the online real-time security monitoring, defense and control of the distribution system are enabled to become more comprehensive and precise, and preconditions are provided for further improving the level of line and main transformer load rate to a precise N-1 security limit. Under the background of future intelligent power grids, the method has a great application prospect.

The invention discloses a method for establishing a numerical calculation model of an accumulation body slope using a stone-catapulting mechanism. By selecting a typical part of an accumulation body, a digital camera is used for image shooting to collect a batch of rocks; Extract and build a block library; then according to the size of the accumulation body provided by the survey data, use the catapult mechanism to build a real calculation model of the accumulation body; finally convert it into a graphic interactive file, and construct the model data of the corresponding geotechnical material for analysis calculate. In this design, the real calculation model of the accumulation body is constructed by constructing the block library, and then calling the block stone library data and randomly placing blocks to realize the real simulation of the composition of the accumulation body, which can effectively improve the accuracy of the calculation of the stability of the accumulation body, and in addition to In addition to calculating the stability coefficient of the accumulation body, it can also obtain relevant information parameters such as the stress and strain of the accumulation body, which has good practicability and promotion prospects.

The invention provides a carbon emission calculation method for vehicles passing through a road maintenance work area, which belongs to the technical field of carbon emission, and determines the characteristics of the road maintenance work area and traffic characteristics; determines the upstream road traffic capacity of the road maintenance work area, the road traffic capacity of the work area, and Downstream road traffic capacity; divide the road maintenance operation analysis period of the vehicle operation status distribution passing through the construction area; determine the carbon emission composition of vehicles in different operating states in the road maintenance operation area; calculate and total the carbon emissions composed of carbon emissions of vehicles in different operating states in the road maintenance operation area ;Calculate the carbon emissions of different operating states during the analysis period of road maintenance operations; calculate the carbon emissions of detoured vehicles during the analysis period of road maintenance operations; calculate the carbon emissions of vehicles passing through the maintenance operation area during the analysis period of road maintenance operations. The invention is used to effectively support the selection of low-carbon maintenance materials, equipment management, traffic organization and precise formulation of maintenance low-carbon emission reduction schemes for roads with different traffic characteristics.

The invention relates to the technical field of civil engineering, in particular to a three-dimensional static calculation method of an overhead pile-plate structure, comprising the following steps: establishing a three-dimensional static model of a pile-plate structure; inputting load parameters into the three-dimensional static force of the pile-plate structure model, and output the deformation and stress results of the pile-slab structure; check the deformation and stress results to determine the final structural parameters of the pile-slab structure. The three-dimensional static calculation method of the overhead pile-slab structure described in the present invention realizes the three-dimensional static calculation of the overhead pile-slab structure, inputs the load parameters into the three-dimensional static model of the pile-slab structure, and outputs the deformation of the pile-slab structure. The results and force results can reflect the three-dimensional deformation, multi-directional force and stress concentration of the structure, and provide designers with comprehensive and detailed calculation data and results. By checking the deformation results and force results, Thereby, the final structural parameters of the pile-sheet structure are determined.

The invention discloses a live broadcast room recommendation method, storage medium, electronic equipment and system, and relates to the field of big data recommendation, which can recommend the user's preferred live broadcast room for the user according to the specified live room, and specifically includes the following process: according to the preset The assumed live room quality scoring process calculates the quality scores of N live rooms, where N is an integer greater than 1, and the N live rooms are groups of live rooms to be scored. Calculate the similarity of the common label between each live room in the live room group to be rated and the specified live room. Input the quality score and the similarity of the common label into the preset recommendation index algorithm to obtain the recommendation index of each live room in the live room group to be rated. The live broadcast rooms whose recommendation index exceeds the preset recommendation index threshold are used as the recommended live broadcast rooms, or the recommendation indexes are sorted, and the preset number of live broadcast rooms with the highest ranking are used as the recommended live broadcast rooms. The present invention can better calculate the similarity between live broadcasts.

The invention discloses a compensation benefit solving and benefit distribution method suitable for a cascade hydropower station group of a drainage basin. The method comprises: proposing a solution thought for obtaining the compensation benefit of any benefit application power station of the basin cascade for each downstream power station; determining an objective function based on a solving idea, determining constraint conditions in combination with actual scheduling conditions of the basin, determining a solving algorithm, and establishing a basin cascade compensation benefit model; and calculating to obtain the pairwise relationship between the benefit application power station and each downstream power station through the model. Based on the TOPSIS theory, a compensation benefit distribution method for the cascade existence of a plurality of benefit application power stations is established. According to the method, a solving thought for obtaining the compensation benefit of any benefit application power station of the cascade hydropower station group is provided, the proposed benefit distribution method takes an approximate ideal value as an optimal solution, the starting point of pursuing benefit maximization of each subject is met, the calculation result is comprehensive, and the distribution method is scientific, reasonable and reliable.

A supercritical flood risk analysis method comprises the steps of 1, determining the supercritical flood discharge on the water yield side for non-engineering measures of different projects; 2, determining the supercritical flood discharge on the water quality side for non-engineering measures of different projects; 3, determining the supercritical flood discharge on the coupling water yield-water quality side for non-engineering measures of different projects; 4, establishing a supercritical flood risk fuzzy subjection function for non-engineering measures of different projects (water yield side) and different water quality levels (water quality side) so as to obtain a supercritical flood risk fuzzy subjection function for the coupling water yield-water quality side; 5, bringing forward supercritical flood risk measurement with non-engineering measures of different projects, water quality difference and multiple variables considered comprehensively based on the Pearsion-III distribution theory and information entropy theory, and determining the supercritical flood risk. The method is higher in adaptability and logical, operation is easy, calculating efficiency and calculating precision are high, and a calculation result is more comprehensive and more scientific.

The invention relates to a pore-exploration and pore-forming device and method for soil stratum ground stress testing and application of the pore-exploration and pore-forming device and method. The pore-forming device comprises a negative pressure soil pumping mechanism, a soil pumping pipe and a soil cutting mechanism, wherein the soil cutting mechanism communicates with the negative pressure soil pumping mechanism through the soil pumping pipe, and soil cut by the soil cutting mechanism is pumped and then discharged by means of negative pressure difference of the negative pressure soil pumping mechanism. According to the pore-exploration and pore-forming device and method for soil stratum ground stress testing and the application of the pore-exploration and pore-forming device and method, steel shells are adopted for wall retaining, a specially made cutter is adopted for cutting soil, pores can be formed quickly through a geological pore-exploration and pore-forming technology of pumping soil through negative pressure, the disturbance on stratums is small, the pore diameter range can be adjusted, the construction cost is low, the construction safety is high, operation is easy andconvenient, and the pore-exploration and pore-forming device and method are suitable for unsaturated sandy soil (such as medium sand, fine sand and mealy sand) with the moisture content lower than 40% and unsaturated soil stratums (such as silt, silty clay and loess) with the moisture content lower than 50%. In addition, a soil stratum ground stress testing method provided by the invention is simple and reliable, can detect out initial ground stress, has great significance on numerical calculation of the soil stratums, and ensures that soil stratum numerical calculation results are more accurate and comprehensive.

The invention discloses an apparent crack geometric parameter visual measurement method, which comprises the following steps of: carrying out image acquisition and distance measurement, acquiring pixel precision, acquiring the pixel precision, acquiring the nearest distance between a pixel of a crack without a skeleton region and a skeleton; s5, acquiring the distance between the pixel of the crack edge removal area and the skeleton, marking the coverage part of the connection line of the two to obtain a corresponding marking array, acquiring the nearest distance between the pixel of the crack edge removal area and the skeleton, marking the coverage part of the connection line of the two to obtain a corresponding marking array, fusing the arrays marked in S4 and S5, performing color mapping, and exporting a measurement result. Measurement and calculation are carried out on the basis of a crack image of a related area acquired by image acquisition equipment, a crack width visualization result can be provided for people, and the average width, length and area of the crack can be measured and calculated; meanwhile, during image acquisition, a laser range finder is selected, the working distance of a camera is obtained, the image pixel precision is calculated in combination with the used focal length, and then the width of each position, the actual crack length value, the actual crack area and the actual average crack width value are calculated.

The invention provides an ultraviolet analyzer metering performance testing method and system. The testing method includes the following steps: acquiring measurement data of an ultraviolet analyzer, and acquiring metering performance parameters of the ultraviolet analyzer according to the measurement data; according to the measurement data, the metering performance parameters and a preset metering parameter score calculation model, calculating a metering score value of the ultraviolet analyzer, and according to the metering score value, judging the metering parameter level of the ultraviolet analyzer. Through the measurement data of the ultraviolet analyzer, multiple metering performance parameters are obtained; through combination of the preset metering parameter score calculation model with the measurement data and the multiple metering performance parameters, the metering score value is calculated, and the metering parameter level of the ultraviolet analyzer is judged. Because the metering score value is obtained by combination of the metering parameter score calculation model with the measurement data and the metering performance parameters, the calculation result is more comprehensive, therefore, the testing reliability and accuracy of the ultraviolet analyzer metering test are increased.