CN102236708A - Method for converting topographic map data format to overhead line format - Google Patents
Method for converting topographic map data format to overhead line format Download PDFInfo
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Abstract
The invention provides a method for converting a topographic map data format to an overhead line format and belongs to the technical field of design tower emptying of a power line. The method comprises the following steps of: 1, reading a file of the topographic map data format, and importing contents of the file into a topographic map database table; 2, reading distance of a distance center line; 3, reading a starting point number; 4, converting the topographic map database table to a database table which corresponds to the file of the overhead line format according to the distance of the distance center line and the starting point number; and 5, converting the database table which corresponds to the overhead line format to the file of the overhead line format. By the method, the technical problems of complicated process, time consumption, labor consumption, high error rate and the like of the conventional conversion method are solved.
Description
Technical field
The invention belongs to power circuit designing and arranging tower technology field, relating in particular to a kind of is the method for overhead transmission line form with the topographic map data format conversion.
Background technology
Along with China's science and technology development, the needs of engineering, large scale topographical map more and more, we can skilfully use the large scale topographical map of existing vector quantization, for our engineering construction provides high-quality, service efficiently.The large scale topographical map of vector quantization is general all to be preserved with DWG and the DXF form of AutoCAD, all can open with measuring popular software south CASS drawing formation system, in fact southern CASS drawing formation system also can generate sectional drawing, but can only generate the form of AutoCAD the inside oneself, can not be used for the designing and arranging tower of power circuit.
Therefore, according to conventional method the line alignment that designs at the large scale topographical map of vector quantization, generate power circuit SLCAD aerial power transmission line plane cross section commonly used and handle and locate the data layout of CAD system, can measure the coordinate of field location in the CAD the inside from the circuit pointwise of topomap upper edge, elevation, according to the coordinate inverse, calculate mileage, being input in processing of SLCAD aerial power transmission line plane cross section and the location CAD system one by one gone, work together like this and to consume the worker also consuming time, also make mistakes than being easier to.
Also has a kind of method, than last a kind of a little more simply, utilize above-mentioned utilization to measure CASS drawing formation system the inside, popular software south exactly a function-----" generating the mileage file " arranged, but the mileage file that generates is not the data layout that CAD system was handled and located to SLCAD aerial power transmission line plane cross section, it is a file that suffix is HDM, to become this file conversion SLCAD aerial power transmission line plane cross section to handle and locate the data layout of CAD system, this file conversion need be become the document of TXT, open with Microsoft Office Excel again, processing through data is handled, converting the CSV data layout to, open with notepad or board then, convert the data ORG form that CAD system was handled and located to SLCAD aerial power transmission line plane cross section again to.
The method that these are conventional, process is more loaded down with trivial details, takes time and effort, and also makes mistakes than being easier to, and aerial power transmission line is short, and is also all right, if aerial power transmission line is long, also do not satisfy the requirement of duration sometimes.
Summary of the invention
At these problems, the present invention is with regard to electric power overhead power transmission sequence aspect, introduce a kind of large scale topographical map that utilizes vector quantization, generate the mileage file, and convert the method for power circuit software format to, and in computing machine, realize the automatic batch conversion, realize the Data Format Transform of precise and high efficiency, measure the time of section and the workload of interior industry about 50% thereby reduce field operation, improved work efficiency greatly.
The method that the present invention proposes comprises: step S1: read in the file of topographic map data form, in the content importing topographic database form with file; Step S2: the distance of reading in the distance center line; Step S3: read in initial period; Step S4:, described topographic database form is converted to database table corresponding to the overhead transmission line formatted file according to the distance and the initial period of distance center line; Step S5: described database table corresponding to the overhead transmission line form is converted to described overhead transmission line formatted file.
An aspect according to the inventive method, step S1 specifically comprises: the file of described topographic map data form is to utilize the suffix that generates in the CASS drawing formation system of the Survey Software south file for HDM, described suffix is that the file of HDM comprises two column data, first row are mileage, and secondary series is an altitude figures; Described topographic database form and described suffix are that the file content of HDM is corresponding, comprise two fields that correspond respectively to described mileage and altitude figures.
According to an aspect of the inventive method, described topographic database form also comprises the path field of identification field and affiliated file, represents the globally unique identifier and the store path of HDM file respectively.
According to an aspect of the inventive method, reading among described step S2 and the step S3 is meant from the data of user's input and reads in or read in from existing file.
An aspect according to the inventive method, among the described step S4, the file of the data ORG form of CAD system is handled and located to the SLCAD aerial power transmission line plane cross section that described overhead transmission line formatted file is a standard, database table corresponding to described overhead transmission line formatted file comprises point code, period, left and right sides offset distance, mileage, elevation, some coding, connecting line attribute, a last tie point period and line attribute field, corresponds respectively to nine contained in described overhead transmission line formatted file column data.
According to an aspect of the inventive method, described database table corresponding to described overhead transmission line formatted file also comprises identification field and affiliated file path field, the unique identification and the store path of the corresponding overhead transmission line formatted file that generates of indicating respectively.
According to an aspect of the inventive method, the database table that described topographic database form is converted to corresponding to the overhead transmission line formatted file specifically may further comprise the steps: set-point code, point code are set to a constant " b "; Period is set, and the initial value of described period is set to the initial period of step S3 input, and the value of next period is that current period adds 1; Left and right sides offset distance is set, and described left and right sides offset distance is set to the distance of the distance center line of step S2 input; Obtain mileage and altitude figures from described topographic database form; The set-point coding, will put encoding setting is fixed value " 8205=13 "; The connecting line attribute is set, and when left and right sides offset distance was zero, the connecting line attribute was set to straight line, is set to curve when non-vanishing; One tie point period is set, and corresponding with period, a last tie point period is set to current period and subtracts 1; Line attribute is set, and when left and right sides offset distance was zero, line attribute was set to center line, when left and right sides offset distance greater than zero the time, be set to left side bearing, when left and right sides offset distance less than zero the time, be set to right side bearing.
An aspect according to the inventive method, step S4 specifically comprises: " distance of distance center point " of obtaining step S2 and S3 and " initial period ", and circulation is read in corresponding to every record in the topographic map data table of topographic map data form, according to described the topographic database form is converted to step corresponding to the database table of overhead transmission line formatted file, generate the tables of data record of corresponding overhead transmission line form one by one, tables of data data up to all data in the topographic database table being converted to the overhead transmission line form stop this circulation.
An aspect according to the inventive method, step S4 specifically comprises: obtain the data in the topographic database form, the range data of step S2 middle distance center line and the initial period data of step S3, with three kinds of data importings corresponding in the database table of overhead transmission line formatted file to generate described database table corresponding to the overhead transmission line formatted file.
According to an aspect of the inventive method, step S5 specifically comprises: extract describedly corresponding to the data in the database table of overhead transmission line form, and generate the file of overhead transmission line form.
Description of drawings
It is the file content of HDM that Fig. 1 shows the suffix that generates in the CASS drawing formation system of Survey Software south;
Fig. 2 shows the SLCAD aerial power transmission line plane cross section processing of standard and the data ORG formatted file content of location CAD system;
Fig. 3 shows the process flow diagram of the method for the invention;
Fig. 4 shows the process flow diagram that generates the data table items that meets the overhead transmission line form;
Fig. 5 to Fig. 7 shows the tables of data that meets the overhead transmission line form under three kinds of different situations;
Fig. 8 shows the file synoptic diagram of handling and locate the ORG form after CAD system is opened with SLCAD aerial power transmission line plane cross section.
Embodiment
Open the large scale topographical map of vector quantization with measuring popular software south CASS drawing formation system, on the large scale topographical map of vector quantization, design the trend of aerial power transmission line, utilize the generation mileage file in the CASS drawing formation system of Survey Software south, generate form as shown in Figure 1.
The file of the data ORG form of CAD system is handled and located to the SLCAD aerial power transmission line plane cross section that the objective of the invention is the standard that will convert this formatted file shown in Figure 1 to, and the form of this document as shown in Figure 2.
Above-mentioned two kinds of forms only are exemplary in nature, not as limiting the scope of the invention, utilize method of the present invention, also can realize the conversion of other related pattern data.
The present invention adopts the conversion of database technique data layout, generates the file of overhead transmission line form, key step as shown in Figure 3, particularly, method of the present invention comprises the steps:
Step S1: read in the file of topographic map data form, in the content importing topographic database form with file;
Particularly, step S1 can import and utilize the suffix that generates in the CASS drawing formation system of the Survey Software south file for HDM, and the content of its file comprises two column data as shown in Figure 1, and mileage is shown in first tabulation, and secondary series is represented elevation.Corresponding topographic database form is as shown in table 1, wherein mileage and elevation field originally corresponding two column data of HDM file, this database table also comprises two fields, be respectively the path of sign and affiliated file, represent the globally unique identifier of this HDM file and the store path of this HDM file respectively, this unique identification can be according to the different situations setting, and the store path of this HDM file can be directly obtains according to the actual storage path of this document.
Table 1 topographic database table
| Field code | Field name | Major key whether |
| Id | Sign | Be |
| Lc | Mileage | Not |
| Gc | Elevation | Not |
| FileName | Affiliated file path | Not |
Step S2: the distance of reading in the distance center line; The input data of readable access customer or read in from alternative document;
Step S3: read in initial period; The input data of readable access customer or read in from alternative document;
Step S4:, described topographic database form is converted to database table corresponding to the overhead transmission line form according to the distance and the initial period of distance center line;
At first, as shown in table 2 corresponding to the database table of overhead transmission line form.
The database table of table 2 overhead transmission line form
| Field code | Field name | Major key whether |
| Id | Sign | Be |
| Ddm | Point code | Not |
| Dh | Period | Not |
| Zypj | Left and right sides offset distance | Not |
| Lc | Mileage | Not |
| Gc | Elevation | Not |
| Dbm | The point coding | Not |
| Ljxsx | The connecting line attribute | Not |
| Syljddh | A last tie point period | Not |
| Xsx | Line attribute | Not |
| FileName | Affiliated file path | Not |
As shown in table 2, first field " sign " and last field " affiliated file path " unique identification and the store path of the corresponding overhead transmission line formatted file that generates of indicating respectively wherein, sign can be according to the different situations setting, and store path can be according to user's the store path that input is determined or using system has set; " mileage " and " elevation " field can directly obtain from the topographic database form of table 1.Generate the overhead transmission line form database table step as shown in Figure 4, particularly:
" point code " is a constant, can directly it be set to " b ".
Can obtain the initial value of " period " according to step S3, and obtain the value of next Dh according to loop code Dh=Dh+1, promptly next period equals current period and adds 1.
Can obtain the value of " left and right sides offset distance " according to step S2, that is, and the distance of distance center line, and when " left and right sides offset distance "＞0, the expression left side bearing is when " left and right sides offset distance "＜0, the expression right side bearing when " left and right sides offset distance "=0, represents that these data are centreline datas.
The front said that " mileage " and " elevation " read from the topographic database table.
" some coding " is fixed value, can directly it be set to " 8205=13 ", and this is to handle and the data ORG form of location CAD system obtains according to the SLCAD aerial power transmission line plane cross section of standard.
" connecting line attribute " has 2 numerical value 0 and 2, wherein, and 0 expression straight line, 2 expression curves.When " left and right sides offset distance "==0, " connecting line attribute "=0, when " left and right sides offset distance " ≠ 0, " connecting line attribute "=2.
" a last tie point period " just is meant the period of a tie point shown in its name, according to the obtaining value method of top " period ", " a last tie point period " equals " current tie point period " and subtract 1 as can be known.
" line attribute " has 3 numerical value 11,12 and 13.Wherein, 11 expression center lines; 12 expression left side bearings, 13 expression right side bearings.When " left and right sides offset distance "==0, " line attribute "=11; When " left and right sides offset distance "＞0, " line attribute "=12; When " left and right sides offset distance "＜0, " line attribute "=13.
Step S4 read in step S2 and S3's " distance of distance center point " and " initial period ", and circulation is read in corresponding to every record in the topographic map data table of topographic map data form, step according to the database table of above-mentioned generation overhead transmission line form, generate the tables of data record of corresponding overhead transmission line form one by one, tables of data data up to all data in the topographic database table being converted to the overhead transmission line form stop this circulation.
Step S5: the file that described database table corresponding to the overhead transmission line form is converted to the overhead transmission line form.
Particularly, extract describedly, and generate the file of content ORG form as shown in Figure 2 corresponding to the data in the database table of overhead transmission line form.
The realization of directly programming of five above-mentioned steps technology that all can use a computer, the reading of data from a file of step S1 and S5 and insert corresponding database table for example, can use various programming languages to realize, database also can select for use existing database server to realize, also can use prior art to finish for reading in of file or data, for various computing formula or the loop code among the step S4, can realize by existing computer technology equally, the purpose of this paper is not to introduce programming technique, but utilize computing machine to realize data-switching, therefore, to specifically how programming do not do to give unnecessary details here.
Provide three concrete examples below, data after respectively corresponding center line, left side bearing (the sideline distance is 7 meters, and initial period is 2000) and right side bearing (the sideline distance is-7 meters, and initial period the is 4000) conversion are respectively as Fig. 5-shown in Figure 7.
3 files of Fig. 5-7 correspondence are opened with board, content is put together, directly open, show as shown in Figure 8 with processing of SLCAD aerial power transmission line plane cross section and location CAD system.This has just finished the conversion of data layout, can be directly used in electric power overhead power transmission sequence designing and arranging tower.
The present invention can realize single stepping by utilizing COMPUTER CALCULATION advantage fast and accurately, avoids complicated loaded down with trivial details data edition.
And the above-mentioned specific implementation (for example file of two kinds of forms) of this paper only is exemplary; not as limiting the scope of the invention; those skilled in the art can openly make corresponding modification and adjustment to any conversion that relates to topographic map data form and overhead transmission line formatted file according to of the present invention, and these modifications and adjustment fall within the scope of protection of the present invention equally.
Claims (10)
1. one kind is overhead transmission line form method with the topographic map data format conversion, it is characterized in that this method comprises:
Step S1: read in the file of topographic map data form, in the content importing topographic database form with file;
Step S2: the distance of reading in the distance center line;
Step S3: read in initial period;
Step S4:, described topographic database form is converted to database table corresponding to the overhead transmission line formatted file according to the distance and the initial period of distance center line;
Step S5: described database table corresponding to the overhead transmission line form is converted to described overhead transmission line formatted file.
2. according to the method for claim 1, it is characterized in that step S1 specifically comprises:
The file of described topographic map data form is to utilize the suffix that generates in the CASS drawing formation system of the Survey Software south file for HDM, and described suffix is that the file of HDM comprises two column data, and first row are mileage, and secondary series is an altitude figures; Described topographic database form and described suffix are that the file content of HDM is corresponding, comprise two fields that correspond respectively to described mileage and altitude figures.
3. according to the method for claim 2, it is characterized in that:
Described topographic database form also comprises the path field of identification field and affiliated file, represents the globally unique identifier and the store path of HDM file respectively.
4. according to the method for claim 1, it is characterized in that reading among described step S2 and the step S3 is meant from the data of user's input and reads in or read in from existing file.
5. according to the method for claim 2, it is characterized in that, among the described step S4, the file of the data 0RG form of CAD system is handled and located to the SLCAD aerial power transmission line plane cross section that described overhead transmission line formatted file is a standard, database table corresponding to described overhead transmission line formatted file comprises point code, period, left and right sides offset distance, mileage, elevation, some coding, connecting line attribute, a last tie point period and line attribute field, corresponds respectively to nine contained in described overhead transmission line formatted file column data.
6. according to the method for claim 5, it is characterized in that, described database table corresponding to described overhead transmission line formatted file also comprises identification field and affiliated file path field, the unique identification and the store path of the corresponding overhead transmission line formatted file that generates of indicating respectively.
7. according to the method for claim 5, it is characterized in that the database table that described topographic database form is converted to corresponding to the overhead transmission line formatted file specifically may further comprise the steps:
Set-point code, described point code are set to constant " b ";
Period is set, and the initial value of described period is set to the initial period of step S3 input, and the value of next period is that current period adds 1;
Left and right sides offset distance is set, and described left and right sides offset distance is set to the distance of the distance center line of step S2 input;
Obtain mileage and altitude figures from described topographic database form;
The set-point coding, will put encoding setting is fixed value " 8205=13 ";
The connecting line attribute is set, and when left and right sides offset distance was zero, the connecting line attribute was set to straight line, is set to curve when non-vanishing;
One tie point period is set, and corresponding with period, a last tie point period is set to current period and subtracts 1;
Line attribute is set, and when left and right sides offset distance was zero, line attribute was set to center line, when left and right sides offset distance greater than zero the time, be set to left side bearing, when left and right sides offset distance less than zero the time, be set to right side bearing.
8. according to the method for claim 7, it is characterized in that step S4 specifically comprises:
" distance of distance center point " of obtaining step S2 and S3 and " initial period ", and circulation is read in corresponding to every record in the topographic map data table of topographic map data form, according to described the topographic database form is converted to step corresponding to the database table of overhead transmission line formatted file, generate the tables of data record of corresponding overhead transmission line form one by one, tables of data data up to all data in the topographic database table being converted to the overhead transmission line form stop this circulation.
9. according to the method for claim 1, it is characterized in that step S4 specifically comprises:
Obtain the data in the topographic database form, the range data of step S2 middle distance center line and the initial period data of step S3, with three kinds of data importings corresponding in the database table of overhead transmission line formatted file to generate described database table corresponding to the overhead transmission line formatted file.
10. according to the method for claim 1, it is characterized in that step S5 specifically comprises:
Extract describedly, and generate the file of overhead transmission line form corresponding to the data in the database table of overhead transmission line form.
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