255 results about "Field survey" patented technology

The invention provides a traffic flow surveying and handling method based on an unmanned aerial vehicle high-definition video. The method comprises the steps of video capture, wherein an unmanned aerial vehicle is made to hover over a selected urban road intersection for high-definition video shooting; image stabilization and pre-processing, wherein the high-definition video is copied, stabilization and pre-processing are carried out on images, and then an image sequence is output; detection and tracking, wherein detection and tracking are carried out on moving objects with the image sequence treated with image stabilization as source data; analysis and statistics, wherein traffic flow analysis and statistics are carried out on a target ID which is tracked down and the current coordinates of motion; output, wherein traffic flow statistical data are transmitted to a client-side graphical interface for display, and then data and statements are generated. The traffic flow surveying and handling method based on the unmanned aerial vehicle high-definition video is capable of obtaining various high-accuracy traffic data, reducing the workload of field survey remarkably, preventing the traffic from being affected, obtaining statistic data of all traffic flows in twelve directions of the intersection, and providing data support for congestion control such as intersection signal timing optimization and traffic channeling improvement.

The invention relates to a soil auger for an undisturbed bisect soil column of filed soil, which comprises a power device, an undisturbed soil inner cylinder, a helical outer cylinder and soil cutting devices. The power device is positioned on the top of the soil auger; the power device, the undisturbed soil inner cylinder and the helical outer cylinder are arranged concentrically up and down. A fixing sleeve for the undisturbed soil inner cylinder on a fixed shaft on the lower part of a direction-changing gear case of the power device is coupled to the undisturbed soil inner cylinder. The undisturbed soil inner cylinder is arranged in the helical outer cylinder, and downwards passes through a shield bearing on the lower part of an inner wall of the helical outer cylinder; and two parallel sheet helixes are welded on the outer wall of helical outer cylinder; two helical soil scrapers are welded at the bottoms of the two parallel sheet helixes; and a set of soil cutting device is arranged at the opposite positions of the outer wall of helical outer cylinder respectively. The soil auger has the advantages of simple structure, simple and convenient operation and convenient carrying, is suitable for field survey, observation and sampling related to soil, guarantees the undisturbed performance and the representativeness of the soil, reduces the working capacity, avoids damaging the soil sample environment, and has the advantages of wide application, accuracy and high efficiency.

A system and method of reporting and displaying field survey data related to particular features located at remote sites that includes generating GPS data related to a feature with a handheld device, generating at least one image of the location, entering text data related to the location on the handheld device, and uploading the GPS data, image and text data into a database located at a central location. The photograph can be optionally transferred wirelessly from a camera to the handheld device. In particular, the transfer can be on a wireless network (WiFi). Data can be post-processed at the database location before entry into the database. GIS maps and reports can be made from the processed data for use in a project. These maps and reports can be placed on a web server for access by authorized personnel. The maps can contain an aerial photograph of the remote sites with symbols representing features overlaid on the aerial photograph. Each feature on the map can be linked to the GPS data, image data and text data related to that feature.

A route and site-specific critical data system for emergency responders as they travel and approach an incident site, comprising a field survey database, a computer-executable GIS extension application interfaced with said database, a mobile GPS receiver, and a mobile user interface that includes a display screen capable of touch-screen icon selection including through gloved hands. The user interface mounted within one or more response vehicles displays multiple screen images, map-based, and photograph-based information, detailed text narratives and data in real-time along the entire route to an incident site, including past the public/private road intersection.

The invention discloses a phase identification method for low-voltage district consumers based on voltage curve clustering analysis. The phase identification method comprises the following steps: first, extracting data of a district transformer with relatively-serious three-phase imbalance and voltage sequences of smart electric meters of the consumers using the district transformer from an electric information acquiring system; second, calculating the discrete Frechet distance between voltage curves of different consumers, calculating a local outlier factor of each consumer based on the discrete Frechet distance and further judging whether the connection relation of the district transformer of the consumers is correct or not; third, clustering the district consumers into three different consumer groups for a consumer set with the correct connection relation of the district transformer according to a K-medoids algorithm based on the discrete Frechet distance between the voltage curvesof different consumers, and further realizing accurate identification of the low-voltage district consumers. The method has the advantages that phase identification of the low-voltage district consumers can be carried out online without artificial field survey, and the problems of low accurate rate, low working efficiency and high cost of the phase identification of the low-voltage district consumers are effectively solved.

The invention provides an Internet-enabled, auto-networking, wireless, sensor-capable, specific geographic location marker based communications network system which broadly and economically deploys a wired and wireless, geographic position specific marker based, communications network technology to form a framework or infrastructure through which a multitude of these marker systems can communicate globally. The invention gathers and transmits or receives: wireless bioinformatics data from living organisms in real time; route and environmental data for real time autonomous systems control; plat data for automating tax assessment; topographic and survey control point data for automating photogrammetry; intelligent survey monument deployment for Internet based land surveying; and environmental, industrial, commercial, residential, medical and security sensor based data in real time. The invention utilizes necessary sensor and position (GPS) electronics and units are deployed along natural and man-made geographic features. Deployment is via field survey or through attachment to a present survey boundary marker or roadside pole.

The invention discloses a land coverage change algorithm based on time-space analysis. The method comprises the following steps: S1, performing remote sensing data preprocessing; S2, performing NDVI distribution map calculation; S3, performing regression simulation on NDVI values in different land coverage type scopes; S4, performing threshold determining and land coverage type distribution map extraction; and S5, performing land coverage type change statistics. According to the invention, by taking remote sensing images of different time phases and land data (such as second national land data employed by the embodiments of the invention) of field investigation as a basis, image preprocessing is performed on the remote sensing images, and plantation normalization exponents of the different time phases are obtained. Model analyzing is performed on NDVI data of the different time phases and corresponding land field investigation data, an NDVI threshold scope corresponding to each type of land is determined, a quite clear land use type graph is obtained, and changing land coverage change data statistics is carried out.

The invention relates to a pressure and water reduction construction method of ultra-deep foundation pit confined water, which is characterized in that field survey and test are performed to obtain the osmotic coefficient of a water-bearing stratum in the field, the quality of a formed hole is ensured by adopting a gas-lift reverse circulation guide pipe, a well casing structure is optimized, the geological conditions of the field can be adapted with a short filter, a tap is ensured to be deeply descended, and the water discharging amount is ensured at the same time. The invention has optimal water reduction effect, reduces influence on peripheral environments without high-power pumping equipment in the water reduction process, reduces energy consumption reduction, is convenient for construction and is especially suitable for the field with a thicker pebble layer, higher permeability and abundant water amounts.

The invention discloses a method for deploying strong wind monitoring points on a rapid transit railway, comprising the following steps: analyzing the gale distribution characteristics and carrying out statistics on the wind speed frequency distribution under each wind direction based on the information of wind speeds, wind directions and the like of weather stations along and around the rapid transit railway line, and deploying basic monitoring points; establishing the correlationship of winds fields between any two monitoring points along the railway line under complicated terrains based on the geographic and geomorphic information, simulating the wind fields along the rapid transit railway line by adopting the computational fluid dynamics (CFD) method theory and method, and deploying interpolated monitoring points; and simulating the wind fields of special road sections, and deploying special monitoring points by combining with wind tunnel tests. The method provided by the invention overcomes the defects of high cost, strong subjectivity, low accuracy and the like in the traditional method which gives priority to field survey and qualitative analysis, realizes deployment of strong wind monitoring points in rapid transit railways under various weather types and environmental conditions, has high simulation accuracy and low monitoring point deploying cost, and provides support for effective monitoring and safety running of rapid transit railways.

The invention discloses a cadastral surveying system and method achieving automatic cadastral mapping. The system comprises an office work data processing and mapping subsystem, a field work ownership surveying subsystem and a field work cadastral plotting subsystem, wherein the field work ownership surveying subsystem and the field work cadastral plotting subsystem are communicated with the office work data processing and mapping subsystem; the field work cadastral plotting subsystem carries out field work plotting on the surveying result of the field work ownership surveying subsystem, the plotting result and the ownership surveying result are guided into the office work data processing and mapping subsystem for making a cadastral map, and automation of cadastral mapping is achieved according to field results. The data management is enhanced, surveying data, the field surveying results and cadastral results are managed in a unified mode, automation of cadastral mapping is achieved, maps, data and on-site situations are coincident, the method is clear in division, the system operation is easy, and servicers can operate the system conveniently.

The invention relates to a building elevation positioning control and precision evaluation method based on satellite images, belonging to the fields of acquisition and updating of urban spatial data of satellite three-dimensional remote sensing data. The method comprises the following concrete steps: (1) carrying out the field survey by a GPS to acquire ground control point data; (2) carrying out block bundle adjustment on aerial images to acquire building roof coordinates; (3) integrating the acquired horizontal coordinate with the building roof vertical coordinate acquired by airborne LiDAR data to acquire a building roof control point; (4) geometrically positioning high-resolution satellite three-dimensional images based on a rational function model (RFM) in an image space to acquire three-dimensional coordinates of the ground and the building roof; and (5) acquiring the relation between the elevation of the control point and the elevation precision of the point pattern of a check point by adopting the building elevation positioning control and precision evaluation scheme based on the point pattern. The invention can promote the application of high-resolution satellite three-dimensional remote sensing images in the fields of acquisition and updating of urban spatial data.

A road sign determination apparatus executes image recognition of image data of a road sign shot with using a camera mounted on a field survey vehicle to determine the road sign. Particularly, it is preferably used for determination of a sign “DO NOT ENTER OTHER THAN DESIGNED DIRECTION”. The image recognition is executed by matching of a prepared template and the image data of the road sign. The template used for the image recognition includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow. The outline of the road sign subjected to the determination can be obtained by the first matching with using the basic template. In accordance with the result of the first matching, the used sign template is limited. Substantially, the second matching is executed. Thereby, the determination process can be efficiently and rapidly executed.

The invention relates to the technical field of intelligent information measurement, in particular to portable dynamic deflection displacement measuring device and method. The portable dynamic deflection displacement measuring device comprises a laser projection unit and an optical signal acquisition processing unit, wherein the laser projection unit consists of a laser power control circuit, a laser launcher and a first cell, and the laser power control circuit and the first cell are respectively and electrically connected with the laser launcher; and the optical signal acquisition processing unit consists of an optical signal imaging screen, a cameral lens, a CCD (Charge Coupled Device) sensor, a mainboard, a display touch control screen and a second cell, the optical signal imaging screen faces to the laser launcher and is coaxially arranged with the laser launcher, and the optical signal imaging screen is parallel to a plane of the CCD sensor and is coaxial to the camera lens and the central axis of the sensor. The invention adopts a portable design, does not need an external computer, is supplied with power by independent cells and is convenient for field survey and carrying; an imaging screen can be disassembled and calibrated independently, which is convenient for range selection and deformation verification; and through an integral design, all measurement functions can be achieved without an external keyboard or a mouse.

The invention relates to a method of reconstructing a 3D power line model, which belongs to the technical field of power and particularly relates to a method of reconstructing a 3D power line model based on airborne laser radar point cloud data. The method is based on the airborne laser radar point cloud data, an engineering survey method by field patrol is not needed, the time input and the laborinput for field survey are reduced, the method is particularly suitable for airborne laser radar data in complex terrain or even dangerous areas and areas which are hard to carry out patrol, and themethod adopts a piecewise model growth (PMG) and data-driven mode, and the airborne laser radar power line data positioning precision can be improved.

The invention discloses a method for measuring a leaf area by manually shooting. Aiming at the defects that the conditions required by shooting the leaf images are hardly met in the open air and the effect on image post-processing is poor, and the like in the prior art, the invention provides the method for measuring the leaf area by manually shooting. When a leaf plane image is acquired, the leaf is placed on a standard template with standard control points; image inversion is performed on the shot image on the basis of correspondence of the standard control points between coordinate positions on different images and spatial relationships, and orthographic images of the shot images are acquired; and each leaf image area in the acquired orthographic images is calculated by using the image processing software. Compared with the prior art, the method has the advantage that: the needed equipment is particularly simple and convenient to carry when the method is implemented, manual shooting is performed by only using a common digital camera during the leaf shooting, the image post-processing only needs conventional software, the measured result is accurate and credible, and the error can be controlled. The complete set of the method for measuring the leaf area by manually shooting is particularly suitable for the requirement on field survey.

The invention belongs to the technical field of hidden trouble prediction and management for trees in the channel of an overhead transmission line and specifically relates to a tree obstacle hidden trouble automatic pre-warning system for an overhead transmission line and a pre-warning method for the above system. The method comprises the steps of carrying out the field survey to conduct the data statistics on the hidden troubles of trees in an overhead transmission line protection zone and construct a hidden trouble database for trees in the channel of an overhead transmission line; conducting the traversing treatment on all trees in the tree hidden trouble database at regular intervals; for any tree with a hidden trouble, calculating the current distance between the tree and a corresponding conductive wire, judging the type of the tree hidden trouble, automatically pre-warning, dynamically evaluating the risk of the hidden trouble according to provisions on the safe operation of the overhead transmission line, and dynamically updating the hidden trouble data of the tree in real time. According to the invention, the problem that existing tree obstacle hidden trouble-shooting methods are time-consuming, labor-consuming and easily cause the artificial misjudgment can be solved. Meanwhile, the pre-warning information is provided timely. The damage to both the personal safety and properties, due to the occurrence of tree obstacle hidden hazards, can be prevented.

The invention provides a method for screening lead/cadmium repair tolerant plants from a metal smelting region, and relates to a plant repair method for heavy metal lead and cadmium contaminated soil. The method includes the following steps that 1, the varieties of crops and wild plants mainly planted locally are surveyed in the metal smelting region; 2, according to the field survey result, mainly-cultivated plants and wild plants on the periphery of the smelting region are selected, roots, stems, leaves, fruits and the like of the plants are collected, the contents of heavy metals at all the portions of the plants are analyzed in a laboratory, and plants with high tolerance and accumulation are screened out; 3, the plants which are screened out are planted in artificially-simulated high-concentration heavy metal contaminated soil, and the plant growth condition is observed in the plant growth process. According to the method, the repair plants are screened from a heavy metal contaminated zone, pertinence is high, the screening process is simple, and the screening success rate is high. The situation that newly-introduced plants do not adapt to local environments, so that the growth condition is not good, and the repair effect is affected can be avoided, and the plant repair cost is reduced.

The invention belongs to the technical field of hidden trouble prediction and management for trees in the passage way of an overhead transmission line and specifically relates to an automatic identification method for the tree obstacle hidden troubles of an overhead transmission line passage way. The method comprises the steps of carrying out the field survey to establish a tree obstacle hidden trouble identification reference system in combination with provisions on the safe operation of overhead transmission lines all over a whole network; for any tree with a hidden trouble, selecting a corresponding tree height growth prediction model to calculate the minimum clearance distance of the tree based no the natural growth rules of the tree; in combination with the tree obstacle hidden trouble identification reference system, constructing a tree hidden trouble prediction model for the transmission line passage way to realize the automatic identification of tree obstacle hidden troubles. The above method is used for guiding a line operating department to formulate state inspecting and hidden trouble eliminating strategies for tree obstacles around the overhead transmission line. Meanwhile, the method provides a decision-making foundation for an administrative department to conduct the management operation on transmission line passage ways.

The invention discloses a traffic accident field surveying instrument based on an active omnidirectional visual sensor. The traffic accident field surveying instrument comprises an omnidirectional visual sensor, an omnidirectional planar laser light source, a GPS (Global Position System) sensor, a compass and a microprocessor, wherein the GPS sensor is used for positioning the traffic accident scene and automatically generating the road plane graph, the compass is used for fixing the measurement direction, and the microprocessor is used for performing three-dimensional image pickup measurement on the panoramic picture of the omnidirectional visual sensor and performing visualized recovery and digital three-dimensional representation of the traffic accident scene. A system application software is used for automatically picking up a panoramic picture of the traffic accident scene, automatically measuring geometrical data of vehicles, objects, traces and the like on the scene, automatically outputting field record diagram, the field scale map, the field sectional view, the field vertical view and the field analysis chart and providing a traffic accident field surveying method. The traffic accident field surveying instrument has the advantages of high environment applicability, high measurement speed and accuracy, high automation degree and can be used for performing visualized recovery and digital three-dimensional representation of the traffic accident scene.

A project management system for automatically consuming input data to be used for tracking project statuses and generating maps and other deliverables used for infrastructure and other construction projects. The project management system is primarily used for generating project deliverables from field survey data and crew reports in the field, which is then checked and corrected by technicians in the office, after which the management system automatically generates as-built maps and tables used as final deliverables.

The invention relates to a mountain torrent disaster risk evaluation method based on a polymorphic system theory. The method includes the following steps: collecting data; carrying out mountain torrent disaster status survey; grading influence factors; establishing a model; and determining different risk grades. Through collection and arranging of basic information of hydrology and landform with a small basin being a unit, technological means such as GIS, satellite remote sensing and hydrological analytical calculation is fully utilized to extract related data, combined with mountain torrent disaster field survey data, a small-basin rainstorm flood analysis is made, a mountain torrent-threatening residential area mountain torrent disaster status defense capability is evaluated, and village danger zones along a river are scientifically divided, through analysis evaluation, basic characteristics of small-basin rainstorm flood of a mountain torrent disaster danger zone and a personnel and property distribution situation are mastered relatively comprehensively and accurately, a relation among a rainstorm, mountain torrents and a disaster is analyzed, and critical rainfall of villages, market towns and towns along the river that may cause occurrence of a mountain torrent disaster is analyzed, thereby providing support for further improving a mountain torrent disaster prevention and control capability and sustainable development of social economy.

The invention provides a river ecological flow determining method with the benthos diversity as a target. By means of the method, the research methods of ecological water requirements are enriched, and meanwhile, the ecological flow determining method with benthos as indicator organisms is provided. The method comprises the steps that river segment selection is researched; the benthos in a river segment are researched and ecological environment elements are inspected on site; the type of a benthos habitat and the characteristic parameter threshold value of the benthos habitat are determined; the optimal type of the benthos habitat which maintain the benthos diverse is determined; the fluvial geomorphology measurement of the river segment is researched; a two-dimensional hydrodynamics modelis constructed; the benthos habitat of the river segment is simulated in different flows; the optimal flow for maintaining the benthos diverse is determined. The method has the advantages that the ecological flow which enables the benthos diversity to be highest can be very accurately obtained, and the problem that by means of a general ecological flow determining method, the result cannot reflect the actual demands of aquatic organisms is solved.

The invention discloses a three-dimensional measurement method for a tunnel rock formation attitude. According to the method, a large amount of geographical information data such as digital elevation models (DEM) and images, which are provided by Google Earth, serve as a data source, a Google Earth component object model application program interface (COM API) is used for obtaining rock stratum demarcation point data from the Google Earth, rock stratum surface fitting is conducted, the rock formation attitude is calculated, and rock stratum surfaces and rock formation attitude elements are displayed visually through a marking language. Compared with field surveys conducted through geological compasses, the three-dimensional measurement method for the tunnel rock formation attitude based on a Google Earth platform has the advantages that time and effort can be saved, the survey range can be expanded, rock formation attitude elements of areas with harsh natural conditions and large rock stratum span ranges can be measured conveniently, and the method is a good supplement to traditional measurement methods.

The invention discloses a large endangered wildlife monitoring method based on unmanned plane technology, and the method is as follows: first, a large endangered wildlife urgently to be studied in a natural protection area is selected, and a gathering area of the large endangered wildlife is determined; then a suitable unmanned plane landing area is selected by field survey, an aerial photography range is delimited, and an air route is formulated by the principle of the maximum of the aerial photography area; latitude and longitude and altitude data recorded by an airborne GPS (global position system) is transferred into a triangulated irregular network (TIN) for combining with aerial photographs to restore the real scene of an aerial photography area so as to obtain the altitude, trajectory, species composition and quantity for living of the large endangered wildlife. The method can realize the real-time large endangered wildlife monitoring and better understanding of large endangered wildlife living habits so as to improve the efficiency of large endangered wildlife protection and further promote the unmanned plane technology in the application of the large endangered wildlife protection field.