CN110188156B - Transmission line engineering three-dimensional design result key information extraction method and system - Google Patents
Transmission line engineering three-dimensional design result key information extraction method and system Download PDFInfo
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Abstract
The invention relates to a method and a system for extracting key information of a three-dimensional design result of a power transmission line engineering, which comprises the following steps: 1) classifying the three-dimensional design results of the historical power transmission line, and dividing the three-dimensional design results of the historical power transmission line into geographic information data, engineering data, a digital model and document data; 2) analyzing data characteristics and key information from the obtained geographic information data, engineering data, digital models and document data to obtain data characteristics and key information of historical three-dimensional design results of the power transmission line; 3) constructing a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the three-dimensional design result of the historical power transmission line; 4) and extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base. The method can be widely applied to the field of information extraction of three-dimensional design results of power transmission line engineering.
Description
Technical Field
The invention relates to the field of power transmission and transformation engineering, in particular to a method and a system for extracting key information of a three-dimensional design result of power transmission line engineering.
Background
The three-dimensional design is the basis of a new generation of digital, virtual and intelligent design platform, is widely applied to a plurality of fields such as buildings, traffic, industry and the like at present, and the power grid engineering design field is gradually applied to the technology along with the development of information technology and intelligent power grids. Under the new three-dimensional design situation, the power grid engineering design review work will change, however, the prior art means is difficult to meet the requirement of three-dimensional design review.
In the traditional mode, the primary design review of the power transmission and transformation project adopts a review unit to review the project design specification, the two-dimensional project design drawing, the project cost and other data submitted by the design unit. Under the new three-dimensional design situation, the power grid engineering design review work is changed, the innovation and innovation are needed in the aspects of review content, review flow, review quality and review efficiency, and the urgent requirement of three-dimensional design result review is met through advanced technical means.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a method and a system for extracting key information of a three-dimensional design result of a power transmission line engineering, wherein the method and the system identify the characteristics and key information of the three-dimensional design result by analyzing the three-dimensional design result, automatically extract and identify the key information by a corresponding algorithm, so that an evaluation expert combines relevant procedures, specifications and experiences, and develop evaluation work of the three-dimensional design of the power transmission line engineering by using the extracted key information, thereby greatly improving work efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for extracting key information of a three-dimensional design result of a power transmission line project comprises the following steps: 1) acquiring geographic information data, engineering data, a digital model and document data of a three-dimensional design result of a historical power transmission line; 2) analyzing data characteristics and key information in the obtained geographic information data, engineering data, digital models and document data to obtain the data characteristics and the key information of the historical three-dimensional design result of the power transmission line; 3) constructing a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the three-dimensional design result of the historical power transmission line; 4) and extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base.
Further, in the step 1), the geographic information data, the engineering data, the digital model and the document data are obtained by dividing according to different data types in the historical three-dimensional design result of the power transmission line, and the geographic information data refers to basic geographic data, power grid thematic data, power grid space data, power transmission channel data and engineering survey data with coordinate projection information in the range of a power transmission line engineering corridor; the engineering data refers to engineering basic information and engineering technical indexes related to the engineering design of the power transmission line; the digital model is a three-dimensional design model of the power transmission line engineering and comprises geometric information and attribute information; the document data refers to various design drawings and document reports generated in the three-dimensional design process of the power transmission line engineering.
Further, in the step 2), the extracted key information includes key information of the geographic information data, the engineering data, the digital model and the document data, wherein the key information of the geographic information data includes projection information, plane coordinates, ground elevation and a data format; the key information of the engineering data comprises engineering technical indexes; the key information of the digital model comprises a logic level, a model name, a code, a spatial position and an important equipment identifier; the key information of the document material is as follows: design phase, directory structure, document name, and document format.
Further, in the step 3), the method for constructing the feature and key information base includes the following steps: 3.1) refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line; 3.2) randomly extracting a plurality of groups from the data characteristics and the key information obtained in the step 3.1) to be used as standard samples, and taking the others as training samples; 3.3) taking the data characteristics and the key information in the standard sample as a characteristic template to form a characteristic and key information base; and 3.4) matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base, if so, discarding the data characteristics and the key information, otherwise, adding the data characteristics and the key information to the original characteristic and key information base until all the training samples are judged completely.
Further, in the step 4), based on the constructed features of the typical three-dimensional design result of the power transmission line and the key information library, the method for extracting the key information of the three-dimensional design result of the power transmission line to be reviewed includes the following steps: extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated by adopting the same method as the step 2); and (3) matching the extracted data features and key information with the features and key information base of the typical three-dimensional design result of the power transmission line constructed in the step 3) by adopting a data feature matching algorithm, judging whether the extraction of the key information is successful, if so, finishing the extraction of the key information, and otherwise, continuing to extract the key information.
A transmission line engineering three-dimensional design achievement key information extraction system comprises: the data type division module is used for classifying the three-dimensional design results of the historical power transmission line according to different data types to obtain geographic information data, engineering data, a digital model and document data of the three-dimensional design results of the historical power transmission line; the first key information extraction module is used for analyzing data characteristics and key information from the obtained geographic information data, engineering data, digital models and document data to obtain data characteristics and key information of historical three-dimensional design results of the power transmission line; the characteristic and key information base building module is used for building a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the historical three-dimensional design result of the power transmission line; and the second key information extraction module is used for extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base.
Further, the geographic information data refers to basic geographic data, power grid thematic data, power grid spatial data, power transmission channel data and engineering survey data with coordinate projection information in the range of the power transmission line engineering corridor; the engineering data refers to engineering basic information and engineering technical indexes related to the engineering design of the power transmission line; the digital model is a three-dimensional design model of the power transmission line engineering and comprises geometric information and attribute information; the document data refers to various design drawings and document reports generated in the three-dimensional design process of the power transmission line engineering.
Further, the first key information extraction module comprises a geographic information data, engineering data, a digital model and a document information extraction submodule; the geographic information data extraction submodule is used for extracting projection information, plane coordinates, ground elevations and data formats from the geographic information data to serve as key information of the geographic information data; the engineering data extraction submodule is used for extracting engineering technical indexes from the engineering data to serve as key information of the engineering data; the digital model extraction submodule is used for extracting logic levels, model names, codes, spatial positions and important equipment identifiers from the digital model to serve as key information of the digital model; the document material extraction submodule is used for extracting a design stage, a directory structure, a document name and a document format from the document material to be used as key information of the document material.
Further, the feature and key information base building module comprises: the characteristic and key information refining module is used for refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line; the sample dividing module is used for randomly extracting a plurality of groups from the obtained data characteristics and the key information to be used as standard samples, and the others are used as training samples; the characteristic and key information base establishing module is used for forming a characteristic and key information base by taking the data characteristics and the key information in the standard sample as a characteristic template; and the characteristic and key information base optimization module is used for matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method so as to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base, if so, discarding the data characteristics and the key information, otherwise, adding the data characteristics and the key information to the original characteristic and key information base until all the training samples are judged, and obtaining the characteristic and key information base of the typical three-dimensional design result of the power transmission line.
Further, the second key information extraction module includes: the information extraction module is used for extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated; and the key information matching module is used for matching the extracted data features and key information with the features of the constructed typical three-dimensional design result of the power transmission line and a key information base by adopting a data feature matching algorithm, judging whether the key information extraction is successful, finishing the key information extraction if the key information extraction is successful, and continuing to extract the key information if the key information extraction is not successful.
Due to the adoption of the technical scheme, the invention has the following advantages: the invention establishes a typical characteristic and key information base, automatically extracts and identifies the key information of the three-dimensional design result to be evaluated based on the characteristic and key information base, so that an evaluation expert can conveniently combine relevant rules, specifications and experiences, and develop the three-dimensional design evaluation work of the transmission line engineering by using the extracted key information, thereby greatly improving the working efficiency. Therefore, the invention can be widely applied to the field of power transmission and transformation engineering.
Drawings
FIG. 1 is a schematic flow chart of a method for extracting key information of a three-dimensional design result of a power transmission line project according to the invention;
FIG. 2 is a data classification diagram of the three-dimensional design result of the power transmission line of the present invention;
FIG. 3 is key information of the extracted geographic information data of the present invention;
FIG. 4 is key information of engineering data extracted by the present invention;
FIG. 5 is the key information of the digital model extracted by the present invention;
FIG. 6 is key information of document material extracted by the present invention;
FIG. 7 is a flow chart of the features and key information base construction of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, the method for extracting key information of a three-dimensional design result of a power transmission line project, provided by the invention, includes the steps of classifying the three-dimensional design result of the power transmission line project according to different data types, analyzing data characteristics and key information of the three-dimensional design result according to different types of data, establishing a characteristic and key information base according to a large amount of data analysis, extracting the key information of the three-dimensional design result of the power transmission line by using an information extraction algorithm, and comparing and analyzing the extracted information with the characteristics and the information in the key information base to finally obtain the required information. Specifically, the method comprises the following steps:
1) and classifying the existing three-dimensional design result of the power transmission line according to different data types to obtain geographic information data, engineering data, a digital model and document data of the existing three-dimensional design result of the power transmission line.
As shown in fig. 2, in the present invention, the three-dimensional design result of the power transmission line is divided into geographic information data, engineering data, a digital model and document data according to different data types. The geographic information data refers to basic geographic data, power grid thematic data, power grid space data, power transmission channel data and engineering survey data with coordinate projection information in the range of a power transmission line engineering corridor. The engineering data refers to basic engineering information and technical engineering indexes related to the engineering design of the power transmission line. The digital model refers to a three-dimensional design model of the power transmission line engineering, and comprises geometric information and attribute information. The document data refers to various design drawings, document reports and the like generated in the three-dimensional design process of the power transmission line engineering.
2) And analyzing data characteristics and key information from the obtained geographic information data, engineering data, digital models and document data to obtain the data characteristics and the key information of the existing three-dimensional design result of the power transmission line.
As shown in fig. 3, is key information of the extracted geographic information data. The three-dimensional design related standard specifies that a CGCS2000(2000 national geodetic coordinate system) is adopted as a coordinate system of geographic information data in the three-dimensional design of the power transmission and transformation project, and a 1985 national elevation standard is adopted as an elevation standard. The geographic information data is data with spatial characteristics, and the projection information, the plane coordinates, the ground elevation and the data format are used as key information of the geographic information data. The basic geographic data comprises an ortho image and a digital elevation model, the two types of data are stored in a grid mode, and the data format is tif. The power grid thematic data, the power grid space data, the power transmission channel data, the engineering survey data and the like belong to design elements of three-dimensional design of power transmission line engineering, the four types of data are stored in a vector mode, and the data format is shp.
As shown in fig. 4, is key information of the extracted engineering data. The engineering data in the three-dimensional design result of the power transmission line are divided into basic engineering information and technical engineering indexes, wherein the basic engineering information mainly refers to engineering names, engineering numbers and the like, and the technical engineering indexes mainly refer to indexes which influence the design, such as erection modes, loop numbers, conductor splitting numbers and the like. Therefore, the invention takes the engineering technical index as the key information of the engineering data.
As shown in fig. 5, is the key information of the extracted digital model. The three-dimensional design output result is definitely specified to be in a GIM format in the three-dimensional design guide rule of power transmission and transformation engineering. The GIM model comprises file types such as cbm, dev, phm, mod, fam and sch, and stores geometric information and attribute information of the model. The three-dimensional design model of the power transmission line is divided into 5 levels according to the logic relationship, each level is provided with a corresponding geometric logic unit and an attribute unit, and the key information of the digital model can be obtained by analyzing the hierarchical relationship and the logic structure, wherein the key information comprises the following steps: logical hierarchy, model name, coding, spatial location, device significance identification, etc.
As shown in fig. 6, is key information of the extracted document material. The digital transfer technical guide of power transmission and transformation engineering has strict requirements on the structure of a document data directory, the name of a file and the format of the file in each design stage, and key information of the document data can be obtained according to the requirements is as follows: design phase, directory structure, document name, document format (pdf).
3) And constructing a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the existing three-dimensional design result of the power transmission line.
The method aims at constructing a characteristic and key information base, on one hand, a three-dimensional design result of the power transmission line is refined by a data combing and analyzing method to obtain relevant characteristics and key information which are used as a characteristic template; on the other hand, the big data of the three-dimensional design result of the power transmission line engineering is obtained through the analysis of a plurality of power transmission line engineering, the obtained characteristics and key information are further processed, the existing characteristic template is continuously updated and perfected, and a characteristic and key information base of the typical three-dimensional design result of the power transmission line is formed. The updating and perfecting of the feature template depend on data items in the feature and key information base, whether the features and key information obtained by the three-dimensional design result exist in the original base or not is judged through a data feature matching method, if yes, the features and key information cannot be stored in the base, and if not, the features and key information cannot be stored in the base. The similar characteristics and the key information can be judged in a manual mode. And establishing a characteristic template of the characteristics and the key information through the two steps, and providing a comparison basis for extracting the key information of the subsequent three-dimensional design result of the power transmission line.
As shown in fig. 7, the method for constructing the feature and key information base includes the following steps:
3.1) refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line;
3.2) randomly extracting a plurality of groups from the data characteristics and the key information obtained in the step 3.1) to be used as standard samples, and taking the others as training samples;
3.3) taking the data characteristics and the key information in the standard sample as a characteristic template to form a characteristic and key information base;
and 3.4) matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base, if so, discarding the data characteristics and the key information, otherwise, adding the data characteristics and the key information to the original characteristic and key information base until all the training samples are judged completely.
Wherein, data feature matching comprises three dimensions of contents: content, characteristics, similarity. The data content is the basis of data characteristic matching, and the content describes the information contained in the whole data. The data characteristics are the key of data characteristic matching, and the characteristics describe the self characteristics of the whole data. The data similarity is the core of data feature matching, the similarity describes the degree of similarity between different data, and the similarity is the same when reaching 100%.
The effect of data feature matching mainly depends on the selection of features and the selection of models, and the feature selection with better effect can be obtained from the following two aspects: (1) selecting based on the characteristics of the data content, wherein the selection mode is mainly carried out on the aspects of the importance, the repeatability and the like of the content, the repeated occurrence times of different data are determined after the importance is judged, if the identical content repeatedly appears in each data item or 75% of the data items, the repeatability is determined to be high, and the 75% probability is obtained by analyzing a plurality of engineering data; (2) based on the feature selection of the data association, this approach is mainly based on the relationship between the data and other data and the situation that the data can provide other data for use. Data item 1 is functional in itself during use, but at the same time it provides support for data item 2, data item 3, and even data item N, when performing computational analysis, and it gets more critical information, which is often more important than the information of data item 1 itself. The two methods are used for calculating a characteristic set with high abstraction degree from the existing characteristics.
4) Extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated by adopting the same method as the step 2), matching the extracted data characteristics and key information with the characteristics of the typical three-dimensional design result of the power transmission line and the key information base constructed in the step 3) by adopting a data characteristic matching algorithm, judging whether the key information extraction is successful, finishing the key information extraction if the key information extraction is successful, and continuing to extract the key information if the key information extraction is not successful.
Based on the method for extracting the key information of the three-dimensional design result of the power transmission line engineering, the invention also provides a system for extracting the key information of the three-dimensional design result of the power transmission line engineering, which is suitable for the method and comprises the following steps: the data type division module is used for classifying the three-dimensional design results of the historical power transmission line according to different data types to obtain geographic information data, engineering data, a digital model and document data of the three-dimensional design results of the historical power transmission line; the first key information extraction module is used for analyzing data characteristics and key information from the obtained geographic information data, engineering data, digital models and document data to obtain data characteristics and key information of historical three-dimensional design results of the power transmission line; the characteristic and key information base building module is used for building a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the historical three-dimensional design result of the power transmission line; and the second key information extraction module is used for extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base.
Furthermore, the geographic information data refers to basic geographic data, power grid thematic data, power grid spatial data, power transmission channel data and engineering survey data with coordinate projection information in the range of the power transmission line engineering corridor; the engineering data refers to basic engineering information and technical engineering indexes related to the engineering design of the power transmission line; the digital model refers to a three-dimensional design model of the power transmission line engineering, and comprises geometric information and attribute information; the document data refers to various design drawings and document reports generated in the three-dimensional design process of the power transmission line engineering.
Further, the first key information extraction module comprises a geographic information data, engineering data, a digital model and a document information extraction submodule; the geographic information data extraction submodule is used for extracting projection information, plane coordinates, ground elevations and data formats from the geographic information data to serve as key information of the geographic information data; the engineering data extraction submodule is used for extracting engineering technical indexes from the engineering data to serve as key information of the engineering data; the digital model extraction submodule is used for extracting logic levels, model names, codes, spatial positions and important equipment identifiers from the digital model to serve as key information of the digital model; the document material extraction submodule is used for extracting the design stage, the directory structure, the document name and the document format from the document material to be used as key information of the document material.
Further, the characteristic and key information base building module comprises: the characteristic and key information refining module is used for refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line; the sample dividing module is used for randomly extracting a plurality of groups from the obtained data characteristics and the key information to be used as standard samples, and the others are used as training samples; the characteristic and key information base establishing module is used for forming a characteristic and key information base by taking the data characteristics and the key information in the standard sample as a characteristic template; and the characteristic and key information base optimization module is used for matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method so as to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base, if so, discarding the data characteristics and the key information, otherwise, adding the data characteristics and the key information to the original characteristic and key information base until all the training samples are judged, and obtaining the characteristic and key information base of the typical three-dimensional design result of the power transmission line.
Further, the second key information extraction module includes: the information extraction module is used for extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated; and the key information matching module is used for matching the extracted data features and key information with the features of the constructed typical three-dimensional design result of the power transmission line and a key information base by adopting a data feature matching algorithm, judging whether the key information extraction is successful, finishing the key information extraction if the key information extraction is successful, and continuing to extract the key information if the key information extraction is not successful.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. The above embodiments are only used for illustrating the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (8)
1. A method for extracting key information of a three-dimensional design result of a power transmission line project is characterized by comprising the following steps:
1) acquiring geographic information data, engineering data, a digital model and document data of a three-dimensional design result of a historical power transmission line;
2) analyzing data characteristics and key information of the acquired geographic information data, engineering data, digital models and document data to obtain data characteristics and key information of historical three-dimensional design results of the power transmission line;
3) constructing a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the three-dimensional design result of the historical power transmission line;
in the step 3), the method for constructing the characteristic and key information base comprises the following steps:
3.1) refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line;
3.2) randomly extracting a plurality of groups from the data characteristics and the key information obtained in the step 3.1) to be used as standard samples, and taking the others as training samples;
3.3) taking the data characteristics and the key information in the standard sample as a characteristic template to form a characteristic and key information base;
3.4) matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base, if so, discarding the data characteristics and the key information, otherwise, adding the data characteristics and the key information to the original characteristic and key information base until all the training samples are judged completely;
4) and extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base.
2. The method for extracting key information of three-dimensional design results of power transmission line engineering according to claim 1, characterized by comprising the following steps: in the step 1), the geographic information data, the engineering data, the digital model and the document data are obtained by dividing according to different data types in the three-dimensional design result of the historical power transmission line, and the geographic information data refers to basic geographic data, power grid thematic data, power grid spatial data, power transmission channel data and engineering survey data with coordinate projection information in the range of a power transmission line engineering corridor; the engineering data refers to engineering basic information and engineering technical indexes related to the engineering design of the power transmission line; the digital model is a three-dimensional design model of the power transmission line engineering and comprises geometric information and attribute information; the document data refers to various design drawings and document reports generated in the three-dimensional design process of the power transmission line engineering.
3. The method for extracting key information of three-dimensional design results of power transmission line engineering according to claim 2, characterized by comprising the following steps: in the step 2), the extracted key information comprises key information of the geographic information data, the engineering data, the digital model and document data, wherein the key information of the geographic information data comprises projection information, plane coordinates, ground elevation and a data format; the key information of the engineering data comprises engineering technical indexes; the key information of the digital model comprises a logic level, a model name, a code, a spatial position and an important equipment identifier; the key information of the document material is as follows: design phase, directory structure, document name, and document format.
4. The method for extracting key information of three-dimensional design results of power transmission line engineering according to claim 1, characterized by comprising the following steps: in the step 4), the method for extracting the key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base comprises the following steps:
extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated by adopting the same method as the step 2);
and (3) matching the extracted data features and key information with the features and key information base of the typical three-dimensional design result of the power transmission line constructed in the step 3) by adopting a data feature matching algorithm, judging whether the extraction of the key information is successful, if so, finishing the extraction of the key information, and otherwise, continuing to extract the key information.
5. A transmission line engineering three-dimensional design achievement key information extraction system is characterized by comprising:
the data type division module is used for classifying the three-dimensional design results of the historical power transmission line according to different data types to obtain geographic information data, engineering data, a digital model and document data of the three-dimensional design results of the historical power transmission line;
the first key information extraction module is used for analyzing data characteristics and key information from the obtained geographic information data, engineering data, digital models and document data to obtain data characteristics and key information of historical three-dimensional design results of the power transmission line;
the characteristic and key information base building module is used for building a characteristic and key information base of a typical three-dimensional design result of the power transmission line according to the extracted data characteristics and key information of the historical three-dimensional design result of the power transmission line;
the characteristic and key information base construction module comprises:
the characteristic and key information refining module is used for refining the acquired data characteristics and key information of the three-dimensional design result of the existing power transmission line;
the sample dividing module is used for randomly extracting a plurality of groups from the obtained data characteristics and the key information to be used as standard samples, and the others are used as training samples;
the characteristic and key information base establishing module is used for forming a characteristic and key information base by taking the data characteristics and the key information in the standard sample as a characteristic template;
the characteristic and key information base optimization module is used for matching the data characteristics and the key information in the training samples with the characteristic and key information base by adopting a data characteristic matching method so as to judge whether the data characteristics and the key information in the training samples exist in the characteristic and key information base or not, if so, discarding the data characteristics and the key information base, otherwise, adding the data characteristics and the key information base to the original characteristic and key information base until all the training samples are judged, and obtaining the characteristic and key information base of a typical three-dimensional design result of the power transmission line;
and the second key information extraction module is used for extracting key information of the three-dimensional design result of the power transmission line to be evaluated based on the constructed characteristics of the typical three-dimensional design result of the power transmission line and the key information base.
6. The system for extracting key information of three-dimensional design result of power transmission line engineering according to claim 5, characterized in that: the geographic information data refers to basic geographic data, power grid thematic data, power grid space data, power transmission channel data and engineering survey data with coordinate projection information in the range of a power transmission line engineering corridor; the engineering data refers to engineering basic information and engineering technical indexes related to the engineering design of the power transmission line; the digital model is a three-dimensional design model of the power transmission line engineering and comprises geometric information and attribute information; the document data refers to various design drawings and document reports generated in the three-dimensional design process of the power transmission line engineering.
7. The system for extracting key information of three-dimensional design result of power transmission line engineering according to claim 5, characterized in that: the first key information extraction module comprises a geographic information data, engineering data, a digital model and a document information extraction submodule;
the geographic information data extraction submodule is used for extracting projection information, plane coordinates, ground elevations and data formats from the geographic information data to serve as key information of the geographic information data;
the engineering data extraction submodule is used for extracting engineering technical indexes from the engineering data to serve as key information of the engineering data;
the digital model extraction submodule is used for extracting logic levels, model names, codes, spatial positions and important equipment identifiers from the digital model to serve as key information of the digital model;
the document material extraction submodule is used for extracting a design stage, a directory structure, a document name and a document format from the document material to be used as key information of the document material.
8. The system for extracting key information of three-dimensional design result of power transmission line engineering according to claim 5, characterized in that: the second key information extraction module includes:
the information extraction module is used for extracting data characteristics and key information from the three-dimensional design result of the power transmission line to be evaluated;
and the key information matching module is used for matching the extracted data features and key information with the features of the constructed typical three-dimensional design result of the power transmission line and a key information base by adopting a data feature matching algorithm, judging whether the key information extraction is successful, finishing the key information extraction if the key information extraction is successful, and continuing to extract the key information if the key information extraction is not successful.
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