359 results about "Source model" patented technology

Apparatus for detecting a metal object comprises a transmitter for generating a pulsed or an alternating magnetic field in the vicinity of the metal object to be detected and a detector for detecting the secondary magnetic field induced in the metal object by the transmitted magnetic field. The detector measures at least three magnetic field gradient components of at least first order of the secondary magnetic field. The apparatus also comprises a processor for determining at least one of the position or the electro-magnetic cross-section or an estimate of the shape of the metal object from the measured magnetic field spatial gradient components. The processor fits the measured components to dipole, multiple dipole, multipole, or extended source models. In a preferred embodiment, the invention may comprise three or more pairs of gradiometric coils, or other sensing means. The detector measures at least five magnetic field gradient components of at least first order, and one or more components of the secondary magnetic field. The detector may be coils, or any other magnetic sensors. The processor enters pre-determined criteria to discriminate against detection of metal objects of no interest or to selectively detect metal objects of interest.

A system and method for developing and enabling model-driven extensible Markup Language (XML) transformation to XML Metadata Interchange (XMI) format incorporate a strong built-in validation capability. A platform independent framework applies multiple passes of transformation, where each pass performs specific operations on internal models. Different source models are then merged into a target model.

The invention discloses a pile-embedding spiral pipe typed ground source heat pump system and a heat transmission model of a geothermal heat exchanger thereof. A solid cylindrical surface heat source model is put forward for the first time and two analytic solution expressions of the heat transmission model is worked out by the Green function method. The system can sufficiently utilizes the underground area of a building, saves a great amount of expenses for boring and pipe embedding, reduces the initial investment of the ground source heat pump system, improves the construction efficiency and has convenient and quick construction. Furthermore, the heat transmission model of the pile-embedding spiral pipe geothermal heat exchanger can quantitatively analyze the effects of all parameters of the pile-embedding spiral pipe geothermal heat exchanger on the heat transmission capability and provides a basis for the engineering design. The structure of the pile-embedding spiral pipe typed ground source heat pump system comprises the geothermal heat exchanger which is connected with an air conditioning heat pump system by pipelines; the air conditioning heat pump system is connected with a conveying and end system in the building; the geothermal heat exchangers have the quantity of more than one; and each geothermal heat exchanger forms the pile-embedding spiral pipe-typed geothermal heat exchanger by building pile foundations and spiral pipes which are embedded in the pipe foundations.

The present invention relates to a computer-implemented method of manufacturing customised 3D objects. The method includes retrieving a source model for a 3D object and a plurality of defined control points for the 3D object from a database; receiving modifications to at least some of the control points from a first user; automatically applying the modifications to the source model to create a modified model; and automatically generating print instructions for manufacture of a customised version of the 3D object. A system and 3D models generated by the method are also disclosed.

A geometric model comparator is provided, which includes processing circuitry, memory, and comparison circuitry. The processing circuitry is configured to generate a target model from a source model. The memory is configured to store the source model and the target model. The comparison circuitry is configured to identify selected points from the source model, create corresponding selected points in a target model, and compare the selected points from the source model with the selected points from the target model to identify one or more selected points from the target model that fall outside of a predetermined tolerance range with the respective one or more points from the source model. A method is also provided.

Method and system are provided for generating a natural language processing model for an information domain. The method includes: deriving a skeleton of a natural language lexicon from a source model of the information domain; applying a set of syntactical rules defining concepts and relationships; and expanding the skeleton of the natural language lexicon based on reference documents from the information domain to provide a natural language processing model for the information domain, wherein expanding the skeleton includes clustering and scoring terms for concepts and relationships.

A method of determining the position and emission rate of at least one source of emanations into an intervening medium, which method comprises measuring the concentration of the emanations in the intervening medium at selected measurement locations to obtain observed data, and measuring the velocity of the intervening medium; postulating a dispersion model; postulating a source model containing source parameters, such as the position(s) of assumed source(s) and assumed emission rate(s); calculating with the dispersion model for a postulated source model the concentration that would arise at the measurement location(s) to obtain synthetic data for the postulated source model; comparing the synthetic data with the observed data to obtain the source model that gives the closest fit; and outputting the position and emission rate of the at least one source assumed in the source model that gives the closest fit.

The invention provides an ANSYS-based duplex stainless steel and dissimilar steel welding deformation prediction method. The method comprises the following steps: (1) determining welding process parameters; (2) establishing a finite element model and carrying out grid partitioning; (3) determining thermal physical parameters of a welding material; (4) determining a heat source model; (5) calculating a temperature field; (6) calculating a stress field, and calculating welding deformation of duplex stainless steel and dissimilar steel. Compared with the prior art, the ANSYS-based duplex stainless steel and dissimilar steel welding deformation prediction method has the advantages that the deformation after welding of SAF2507 super duplex stainless steel and Q235 low-carbon dissimilar steel is successfully predicted; a thermal treatment scheme after welding is formulated according to a prediction result; the quantity of experiments for a welding process is reduced; manpower and materials are saved; a technical specification is provided for working procedures of previous lofting and feeding in a product manufacturing process; the workload of a working procedure of later machining is reduced.

A data source detection method and system for detecting data sources are provided. The data source detection system comprises a generic data source connector for connecting to a data source, a data source connectors repository for storing the location of the data source and a data source model for representing information contained in the data source. The method comprises the steps of reading a data source connector repository, locating and connecting to a data source connector of a data source and building a data source model of the data source.

The invention discloses a determination method for heat source model parameters in multiplewire submerged-arc welding by numerical simulation. The determination method comprises the following steps of: determining a heat-flow density distribution function in the multiplewire submerged-arc welding process; initially determining the heat source model parameters, wherein the heat source model parameters to be determined includes Ui, Ii, v, n, taui, etai, alphai, f<fi>, bi, ci, a<fi>, and a<bi>; and finally determining a heat-source model, wherein the determined parameters are substituted into the heat-flow density distribution function q(x, y, z, t) which is then taken as a thermology boundary condition for repeated iterative computations by a numerical simulation tool, the computation result of iterative computation of each time is compared with the shape of a joint fusion pool obtained by actual welding, the heat-source model parameters bi, ci, a<fi>, a<bi> are gradually adjusted by a range of 5% according to the comparison results until the errors between the parameters of the fusion depth and the fusion width of a simulated fusion pool and the fusion depth and the fusion width of the actual joint fusion pool are smaller than 10%, and then the determination of the heat-source model parameters in the multiplewire submerged-arc welding is finished.

The invention discloses a comprehensive benefit analysis-based micro-power-grid optimal configuration method comprising the following steps: operation environment data and load data of distributed power sources in a micro-power-grid are collected; according to a distributed power source model and a micro-power-grid operation solution, output data and comprehensive benefit evaluation indexes of the distributed power sources are obtained; according to the comprehensive benefit evaluation indexes and corresponding weighing coefficients, a comprehensive benefit object function with a distributed power source quantity as a variable is built; the comprehensive benefit object function is solved via a particle swarm optimization algorithm; the distributed power source quantity satisfying constraint conditions is obtained and used a configuration quantity of the distributed power sources in the micro-power-grid; via the method, an overall benefit and comprehensive benefit evaluating system of the micro-power-grid can be comprehensively built, effects exerted by all factors in micro-power-grid planning operation can be accurately analyzed, investment cost can be lowered, and energy utilization efficiency can be improved.

The invention discloses a method for establishing a measurement data-based simple and convenient irradiation source model of a medical linear accelerator. The method is characterized by comprising the following steps of: supposing that an irradiation source of the medical linear accelerator is on the part of the bottommost end of an MLC (Multi-leaf Collimator); measuring a flux pattern of data inversion from the accelerator through adjustment; and realizing simulation of the irradiation source of the medical linear accelerator by using a method of combining weight of outgoing particles and flux strength by combining the position of the outgaining particles with the flux distribution. Dose distribution in a template is obtained by using geometric description of a particle transport model of classic monte carlo program EGSnrc and a model of DOSXYZnrc. The method is established based on measurement data of the medical linear accelerator, so that the dependence of the conventional full accelerator simulation on the technical detail of the structure of the accelerator and heavy calculation task brought by need of sectional re-simulation in each modification process of the simulation parameter are avoided. The model can be used as an irradiation source model for an accurate monte carlo dosage calculation tool in a human body and can also be used for providing a source model for a dosage verification tool in a treatment planning system and an analytical dosage calculation tool of a treatment scheme optimization algorithm.

The invention relates to a building method for a welding heat source model, in particular to a building method for a laser welding heat source model. The method solves the problem in laser welding simulation of large-scale complex construction members that laser heat source achieving difficulty is large, and calculating efficiency is low. The method includes: step 1, building a three-dimensional finite element grid model; step 2, building a Gaussian heat source mode of a heat source surface; step 3, expanding welding energy along the laser welding pool depth direction; and step 4, solving a governing equation based on finite element software and conducting heat-machine coupling calculation, namely building of the laser welding heat source model is finished. The building method is applied to the field of welding.

The invention provides a model driven based imaging design method for an embedded industrial real-time system, and belongs to the technical field of embedded application software and industrial control. The method comprises steps as follows: an embedded industrial real-time field imaging meta model is recognized and constructed; a semantic knowledge base of the imaging meta model is constructed; a model mapping rule system based on the semantic knowledge base is formulated; a visible source model design platform is established; and a model conversion environment which is compatible to various target systems is provided. By means of the method, new system application software can be re-customized by modifying the source model according to requirements of embedded products and changes of application characteristics, and the method has good applicability, maintainability and reusability, can effectively improve the developing efficiency of an embedded industrial terminal, and is real, feasible and suitable for industrial development of embedded products.

The invention provides a near/far field broadband mixed source far field source direction finding method based on an amplitude-phase error array, relates to a near/far field broadband mixed source far field source direction finding method, and is to solve the problem of inaccurate estimation of direction of arrival of a far field information source in a near/far field broadband mixed information source when array amplitude-phase errors exist at present. The near/far field broadband mixed source far field source direction finding method based on the amplitude-phase error array comprises the following specific steps: 1) constructing an information source model under an ideal condition; 2) constructing an information source model under the array amplitude-phase errors according to the information source model constructed under the ideal condition; and 3) calculating a far field information source direction-of-arrival estimation value according to the information source model constructed under the array amplitude-phase errors. The method is used in the signal processing field.