36results about How to "Shorten acquisition cycle" patented technology

The invention belongs to the field of laser radar measuring, and particularly discloses a road feature extracting method based on fracture surface subdivision. The method comprises the step of obtaining laser scanning point cloud data through a laser radar measuring device, the step of determining a road feature guide line and extracting road feature nearby point cloud data, the step of generating subdivision sections according to the road feature guide line and a certain step length and calculating the coordinates of proximal point clouds in a subdivision section coordinate system to finish fracture surface subdivision of laser point clouds, the step of selecting one subdivision section with integrated feature information and generating a road feature point cloud template in which a user is interest, the step of determining final conversion model parameters of the road feature point cloud template and the subdivision section point clouds, and the step of calculating the space coordinates of road features, extracting needed features according to the characters of the road features and finally finishing measuring and extracting of the road features. The idea of the fracture surface subdivision is introduced, the complex road features are automatically measured and extracted, the working efficiency is remarkably improved on the premise of guaranteeing measuring precision, and the method has remarkable economic and social benefits.

The present invention provides an automatic exposure control method and system, comprising: opening the flat panel detector, setting the parameters of the flat panel detector, and selecting the exposure radiation field; scanning the exposure dose of the exposure radiation field area in real time, if detected When the exposure dose is greater than the first preset threshold, it is determined that the exposure is started; after the exposure starts, it enters the automatic exposure control mode and triggers the flat panel detector to send a gate-off control signal; after the exposure ends, the flat panel detector triggers image acquisition. The invention realizes automatic exposure detection and obtains the exposure dose at the end of exposure based on the exposure dose detection of the flat panel detector, has a simple structure and low cost, and can effectively avoid exposure dose errors caused by problems such as line delays; at the same time, the image acquisition cycle is short and the operation is complicated low degree.

The invention discloses a method for realizing multi-satellite combined imaging. The method for realizing multi-satellite combined imaging includes the steps that an orbit rendezvous of transiting satellites in a given time quantum is obtained, the orbit rendezvous of the transiting satellites is solved in an optimization method to obtain a relatively optimum imaging scheme, and the imaging scheme is optimized to determine which satellite is adopted and what work mode is adopted by the satellite for imaging in a certain given time quantum. The method for realizing multi-satellite combined imaging combines the satellite orbit computing technology and the artificial intelligence technology, and includes the steps of rapid obtaining of the orbits of the transiting satellites, automatic selection of multi-target optimization algorithms, automatic optimization of an imaging coverage scheme, and the like. The method has the advantages of being high in degree of automation, efficient in algorithm and the like, and can be used for building a unified district observation platform for multi-satellite combined imaging. By means of the method for realizing multi-satellite combined imaging, a user can determine the optimum satellite resource from numerous satellite resources, and the cycle of obtaining satellite remote sensing data for the user is made to be as short as possible.

The present invention provides an automatic exposure control method and system, comprising: the object to be photographed enters the photographing area, and the image acquisition of the object to be photographed and the location information of the position to be photographed are obtained; based on the relative position of the object to be photographed and the flat panel detector, the The exposure radiation field of the detector; the exposure radiation field of the flat panel detector is selected, and the part to be photographed is exposed, and the flat panel detector triggers image acquisition after the exposure is completed. The present invention collects information through the visual device, calculates and analyzes the selection range of the radiation field, reduces the subjective influence of the operator, and makes the selection of the exposure radiation field more accurate; realizes automatic exposure control based on the exposure dose detection of the exposure radiation field area , simple in structure and low in cost; predicting the exposure dose through an algorithm can effectively avoid exposure dose errors, realize precise exposure control, and improve imaging quality; automatically collect images immediately after the end of exposure is detected, shortening the image acquisition cycle.

The invention belongs to the technical field of space-to-ground observation, and particularly discloses a method for calculating a three-dimensional intersection angle of satellite images. The method comprises the following steps of A, acquiring image point coordinates of same-name points of a three-dimensional satellite image pair by using a manual measurement or automatic satellite image matching method; B, implementing an RFM (rational function model)-based area network compensation method by utilizing the coordinates of the same-name points of the satellite images to realize the optimization of RPC (rational polynomial coefficient) parameters; C, calculating spatial rectangular coordinates corresponding to object-space points formed by projecting the same-name points onto projection surfaces at different elevations by using a projection trajectory method to finish the spatial reconstruction of same-name light; and D, calculating the three-dimensional intersection angle of the same-name light by utilizing direction vectors of the reconstructed same-name light. The method is applied to the calculation of the three-dimensional intersection angle of any three-dimensional model formed by overlapped satellite images without any ground control point, can be used for the mapping accuracy evaluation of the three-dimensional model, and has remarkable economic and social benefits.

The invention provides an automatic exposure control system and an automatic exposure control method, including: a computer communicating with a flat-panel detector through a router; The high-voltage controller communicates with the flat-panel detector and closes the high-voltage generating device based on the gate-off control signal; the bulb emits X-rays based on the high-voltage signal sent by the high-voltage generating device. The invention adopts the wireless mode to transmit the gate-off control signal, and the application scenarios are not limited; the exposure dose detection of the exposure radiation field area based on the flat panel detector realizes the automatic exposure control and real-time statistics or prediction of the exposure dose at the end of the exposure, the structure is simple, The cost is low, which can effectively avoid the exposure dose error caused by line delay and other problems; at the same time, the image acquisition cycle is short and the operation complexity is low.

The invention provides an engine gearshift prompt parameter obtaining system and method. The engine gearshift prompt parameter obtaining system comprises a data collection module, a data calculation module and a data outputting module, wherein the data collection module, the data calculation module and the data outputting module are sequentially connected. The data collecting module is used for collecting universal characteristic data of an engine. The data calculation module is used for calculating engine gearshift prompt parameters. The data output module is used for inputting the engine gearshift parameter into an engine management system. After the engine gearshift prompt parameters obtained by the adoption of the engine gearshift prompt parameter obtaining system are applied to gearshift prompt control, the purpose of obviously lowering the oil consumption of the whole vehicle is achieved; besides, the gearshift prompt function control parameters can be rapidly and accurately controlled, the obtained parameters are more objective than those obtained by the adoption of a traditional method, the manpower and material resource cost of a traditional method for obtaining the gearshift prompt function control parameters of an engine control system is significantly lowered, the obtaining efficiency of the gearshift prompt function control parameters is greatly improved, and the parameter obtaining period is shortened.

The invention discloses a monitoring method and system for hidden dangers of geological subsidence of power grid tower equipment based on SAR satellite data, which relies on SAR satellites to carry out wide-area geological subsidence monitoring on target areas, and analyzes and processes the monitoring results through a data processing module to obtain the target The long-term and slow geological subsidence in the region is superimposed on the GIS geographic information system of the power grid, and the information is automatically pushed according to the subsidence, voltage level and importance of the power grid tower equipment. The equipment operation and maintenance unit will feed back the site survey results to the system for continuous optimization The satellite image processing model and algorithm finally realize the visualization of the geological subsidence distribution of the power grid. The invention greatly reduces the workload of manual on-site measurement, shortens the acquisition period of geological subsidence results of the power grid, and realizes long-term, high-precision, large-scale and objective geological subsidence results of power transmission and distribution equipment in the power grid. The distribution and its occurrence trend provide support.

The present application discloses a hyperspectral satellite onboard data intelligent interpretation system and its implementation method, including a model generation module and an on-board inference module. The model generation module is used for training and deploying models, including sample data set production, model selection and Training and model quantization deployment, the onboard inference module is used to intelligently interpret the newly collected data using the trained neural network, including input data preprocessing, sliding window slicing, model inference, inference result splicing and post-processing, projection Geographic coordinates and send processing results. It has the following advantages: it can extract target information more objectively and efficiently, form thematic products, and reduce time and labor costs; by deploying the neural network on the satellite, users do not need to download the original image to the ground, which can solve the problem of timeliness, The cycle of information acquisition is greatly shortened.

The invention discloses a production line three-dimensional monitoring system of Digital Twins. The system includes a data acquisition unit for arranging data collection devices at production equipment and reading out data related to the production equipment to form raw data, and after preprocessing the raw data, outputting the preprocessed raw data to a data center; a data analysis unit for reading out the preprocessed raw data of the data center for analysis, and outputting the analysis data to the data center, the analysis data including the current state data of each action equipment in the production equipment and analytical statistical data of production equipment operation; and a three-dimensional visualization unit including a production equipment three-dimensional model building module, an analysis data matching module, and a rendering display module, wherein, the three-dimensional model building module is for retrieving a three-dimensional production equipment model from a production equipment three-dimensional model library, and wherein, the analysis data matching module includes an action equipment animation module, a data visualization module, and a data window module.

The invention discloses an unsymmetrical loading shallow-buried tunnel port construction protection structure and a construction method thereof, and belongs to the field of tunnel construction. The invention aims at achieving zero excavation before a port is temporarily supported to avoid the disturbance of slope leveling to a massif. The unsymmetrical loading shallow-buried tunnel port construction protection structure comprises protecting arches, a gravity-type retaining wall and a pipe shed, wherein the protecting arches, the gravity-type retaining wall and the pipe shed are arranged at theouter side of the massif, and the gravity-type retaining wall is connected with the outer sides of shallow-buried side arch springing parts and fits the shallow-buried side arch springing parts. Theconstruction method of the unsymmetrical pressure shallow-buried tunnel port construction protection structure comprises the steps of conducting side slope preprocessing, construction of an arch top section, construction of the pipe shed, construction of the shallow-buried side arch springing parts, construction of the gravity-type retaining wall, construction of deep-buried side arch springing parts and backfilling. Before the arch top section is constructed and when the arch top section is installed, the massif does not need to excavated; when the shallow-buried side arch springing parts andthe deep-buried side arch springing parts are installed, excavating is conducted only at the arch springing parts, and the disturbance to the massif during port protection is reduced. Through the arrangement of the gravity-type retaining wall for resisting unsymmetrical loading of the massif, the excavation amount is small, the disturbance to the massif is small, the construction is convenient, the construction sequence can timely obtain the effect of resisting unsymmetrical loading of the massif, and the obtaining period of the effect of resisting unsymmetrical loading is short.