47results about How to "Reduce field workload" patented technology

The invention relates to a high-precision intelligent detection method for bridge diseases based on spatial position. The method comprises the following steps: adopting a high-definition image acquisition system, taking photos of the side surface, the beam bottom and the bridge deck of the bridge to acquire image maps of each part of the bridge and record the position information of the collectedimages; The image data and the position information data are imported into an image processing software to make a mosaic image map of each part of the bridge; Import the mosaic image into the bridge disease intelligent identification system; Bridge disease three-dimensional space file system is established. After the bridge disease information and the bridge three-dimensional model space are automatically matched, the bridge three-dimensional model data matching the bridge disease information are stored in the database, so that the bridge disease information can be called and viewed. The invention realizes automatic collection and intelligent analysis of bridge detection data, reduces field work workload of detection technicians and improves detection efficiency.

The invention discloses a method for actually measuring and evaluating large region ground surface coverage precision by using a high-precision instrument. The method comprises the following steps: assigning workload for ground surface coverage data to be evaluated, image data corresponding to ground surface coverage, space range data capable of effectively and hierarchically classifying the region and sampled sample comprehensive data of an adopted precision evaluation sampling scheme according to the number of pattern spots and an operation range, and meanwhile hierarchically dividing the integral evaluation region into each independent unit; performing field actual measurement and precision evaluation by using the high-precision instrument and then summarizing precision evaluation result of each unit to finally form an integral precision evaluation result. By considering the characteristics of qualitative and quantitative precision evaluation, the precision of a region ground surface coverage product is more completely reflected and evaluated; the workload can be hierarchically and clearly cut to facilitate management, so the field work is relieved, and the development of the actual measurement precision evaluation work in a larger range is facilitated.

The invention discloses a scheme for arranging ground photography base station net. The scheme includes determining photography accuracy m by measuring the topographic map scale, calculating photography depth of field Ymax by photography accuracy, arranging reciprocating photography base station point in the area to be measured, and performing full covering photography in the area to be measured having radius of kYmax.

The present invention relates to the technical field of loess landslide identification, and discloses an early identification method for loess landslides based on land subsidence information, comprising the following steps: S1, combining subsidence information and groundwater information to obtain the downstream of the subsidence center groundwater flow field and the boundary of the tableland Area, this area is A; S2, generate a slope map according to the DEM of the research area; the slope requirement of a single landslide is 30°-50°, and the area that meets these conditions in area A is B; S3, obtain the remote sensing image of the research area , to identify the seepage point of the loess tableland and groundwater; the area with groundwater seepage in area B is called C, so that area C is the landslide area that is finally identified. This method is suitable for InSAR identification of landslides and optical remote sensing images The three methods of identifying landslides using DEM and DEM learn from each other, revealing their internal relations and improving the accuracy of loess landslide identification.

The invention discloses a method for making terrain sections by fusing UAV images and laser point clouds, including obtaining UAV images and laser point cloud data; Section lines with feature attribute labels; extracting skeleton features and detail points; merging section lines, skeleton features and detail points with feature attribute labels to generate refined and thinned topographic section results and other steps. Combined use of laser point cloud and UAV images for ground line production effectively avoids the drawbacks of a single data source. It is not only suitable for the production of high-precision section lines in complex areas, but also can obtain the attribute point information of roads, houses and other ground objects, thus meeting various needs of engineering survey and topographic surveying and mapping.

The invention relates to the technical field of sugarcane disease inspection, and provides an infecting method for authenticating the pathogenicity of sugarcane leaf fungal disease strains. The method comprises the steps of preparation of strains, collection and pretreatment of leaves, preparation of infected leaves, infection, culture and pathogenicity evaluation of strains. The method is characterized in that the preparation step of the infected leaves comprises the substeps: shearing the leaves into long segments of 4-8cm, wrapping two ends of the leaves with tissues, putting the leaves into a sterilized culture dish, and dripping sterilized clean water onto the tissues at the two ends of the leaves; and the infection step comprises the substeps: pricking two sides of the midribs of the leaves in the culture dish by using a pricking device, clipping hyphae to the pricked positions of the leaves by using sterilized tweezers to serve as a test culture dish. The method has the following predominant substantial characteristics and significant progresses: (1) a few sugarcane leaves and hyphae need to be infected; (2) the temperature and humidity of the infected sugarcane leaves can be controlled, so as to meet the requirements of pathogenic bacteria attack for high temperature and high humidity; and (3) the infected strains with pathogenicity are attacked significantly and have high sensitivity.

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.