CN111160018B - Method and system for recognizing non-component text of electrical drawing and storage medium - Google Patents
Method and system for recognizing non-component text of electrical drawing and storage medium Download PDFInfo
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- CN111160018B CN111160018B CN201911280835.6A CN201911280835A CN111160018B CN 111160018 B CN111160018 B CN 111160018B CN 201911280835 A CN201911280835 A CN 201911280835A CN 111160018 B CN111160018 B CN 111160018B
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Abstract
The invention discloses a method for identifying a non-component text of an electrical drawing, which comprises the following steps: screening out a candidate set of the non-component text through a regular expression or database query; identifying the candidate concentrated non-component texts according to the text types; and adjusting the type of the text according to the recognition processing result. According to the method, the regular expression and the database are used for inquiring and giving out the candidate text for the text in the drawing, the candidate text is screened and identified according to the text type, and the identified text is adjusted and processed, so that the problems of missed identification and false identification which possibly occur are solved, the identification accuracy and fault tolerance are improved, and the accurate high-fault-tolerance electric drawing non-component text identification method is provided. The invention can be widely applied to the field of artificial intelligence in the electrical industry.
Description
Technical Field
The invention relates to the technical field of artificial intelligence in the electrical industry, in particular to a method and a system for identifying a non-component text of an electrical drawing and a storage medium.
Background
In the electrical industry, an electrical complete set quotation staff needs to give a quotation of an electrical complete set according to a CAD electrical design drawing taken from a user. Listing a list according to a CAD drawing given by a user is the most important link in quotation and is also the basis of a set of electric quotation. As a link which is tedious and needs a certain field knowledge, the traditional quotation mode of the complete set of electric quotation personnel mainly takes out the text of the components in a manual Excel input mode or a software mode, lists are listed, quotation lists are collected, and finally quotation is carried out according to the lists.
However, the method is a manual and semi-manual processing mode, which not only depends on the background knowledge and ability of the quotation personnel to a great extent, but also needs the quotation personnel to quickly judge and find out the text and the type of the components according to the background knowledge and to deduce the real intention expressed by the designer in the drawing. Therefore, the quotation link is very tedious, time-consuming and low-efficiency work, the whole working process is easy to make mistakes, repeated proofreading is needed in the later process to avoid making mistakes, the progress of the project is seriously influenced, and even the bidding of an enterprise fails or is damaged. In a word, the traditional mode of listing only by hand or semi-hand limits the quotation speed and precision of quotation personnel to a great extent, can not meet the requirements of users and companies on quick and accurate quotation, and also influences the progress of engineering. Along with the development of artificial intelligence and heat, the necessary way is identified in the drawing by an artificial intelligence mode aiming at the field of complete set of electric quotation.
In the electrical industry, intelligent identification of components in electrical drawings has two most basic core works: judging and identifying the component text, and judging and identifying the non-component text. Common non-component texts can be divided into a line inlet end text, a terminal text, a distribution box parameter text, a phase sequence text, a loop number text and an electric wire text according to description purposes. As the non-component text is recognized and filtered, the detection and recognition effect of the component text can be obviously improved. However, the non-component text needs to be recognized and judged by manpower, and in the recognition process, the situations of false recognition and missing recognition are likely to occur. At present, in the field of artificial intelligence in the electrical appliance industry, a method for identifying non-component texts of electrical drawings with accuracy and high fault tolerance is also lacked.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a method, a system and a storage medium for identifying a non-component text in an electrical drawing with high accuracy and high fault tolerance.
The invention provides an electric drawing non-component text recognition method, which comprises the following steps:
screening out a candidate set of non-component texts through a regular expression or database query;
identifying the candidate concentrated non-component texts according to the text types;
and adjusting the type of the text according to the recognition processing result.
Further, the method for recognizing the non-component text of the electrical drawing further comprises the following steps:
filtering the non-component text through a regular expression;
performing text splicing processing on the non-component text;
and carrying out text splitting processing on the non-component text.
Further, the step of splicing the non-component texts is performed, and the spliced texts comprise a distribution box parameter text, an electric wire text and a wire inlet end text.
Further, the text type includes: the method comprises a distribution box parameter text, a wire inlet end text, a terminal text, a phase sequence text, a loop number text and a wire text.
Further, the step of performing individual identification processing on the type of the non-component text includes the following steps:
identifying and acquiring a distribution box tree structure;
acquiring a candidate parameter text, and identifying and acquiring a distribution box parameter text;
acquiring a straight line of a line inlet end through the tree structure, acquiring a first text distance threshold value, and identifying a text of the line inlet end through the straight line of the line inlet end and the first text distance threshold value;
obtaining a wire outlet end electric wire through the tree structure, obtaining a second text distance threshold value, and identifying a wire outlet end text through the wire outlet end electric wire and the second text distance threshold value;
identifying a phase sequence text through a regular expression, and deleting an isolated text in the phase sequence text according to a phase sequence text result;
identifying a loop number text through a regular expression and an electric wire, wherein the electric wire is obtained from a tree structure;
and identifying the wire text through the regular expression.
Further, the step of adjusting the identification processing result with conflict includes the following steps:
acquiring a text list with a conflict in the recognition result;
for each text in the conflicting text list, acquiring the specific category of the text through the text position and the distribution box tree structure;
and supplementing the text which is missed by recognition according to the recognition result.
Further, the step of identifying the loop number text by the regular expression and the wire, the wire obtaining from the tree structure, comprises the steps of:
acquiring a text on the right side of the distribution box tree structure;
classifying the texts according to the formats of the texts;
traversing texts with the same format, and filtering the texts with repeated contents;
and matching and filtering the filtered text again to obtain a loop number text.
The invention also provides an electrical drawing non-component text recognition system, which comprises:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is enabled to implement the method for recognizing the non-component text of the electrical drawing.
The invention also provides an electrical drawing non-component text recognition system, which comprises:
the data preprocessing module is used for preprocessing the data of the non-component text;
the candidate text screening module is used for screening a candidate set of the non-component text through a regular expression or database query;
the text recognition module is used for recognizing the candidate concentrated non-component texts according to the text types;
and the conflict text processing module is used for adjusting the type of the text according to the recognition processing result.
The present invention also proposes a storage medium having stored therein processor-executable instructions for performing an electrical drawing non-component text recognition method as described above when executed by a processor.
One or more of the above-described embodiments of the present invention have the following advantages: according to the method, the texts in the drawings are queried by using the regular expression and the database to give the candidate texts, then the candidate texts are screened and identified according to the text types, and the identified texts are adjusted, so that the situations of missed identification and false identification which possibly occur are solved, and the identification accuracy and fault tolerance are improved.
Drawings
FIG. 1 is a flow chart of a method for recognizing non-component texts in an electrical drawing according to the invention;
FIG. 2 is a schematic structural diagram of a non-component text recognition system of an electrical drawing according to the present invention;
FIG. 3 is a flowchart of the present invention for identifying candidate non-component texts based on text type.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
Before the non-component text is identified, the subsequent identification efficiency can be obviously improved by performing data preprocessing on the text. Searching and filtering are carried out in a regular mode, some texts which are basically irrelevant to the intelligent recognition drawing or texts which are definitely components are filtered, and the regular expression is shown in a table 1:
TABLE 1
When the data of the text is preprocessed, the text is spliced, and the text to be spliced generally mainly comprises a distribution box parameter text, an electric wire text and a text of a wire inlet end.
One description text in the distribution box parameter text may be divided into multiple pieces, for example, "Pe =63KW" is divided into three pieces, "Pe" = "and" 63KW ", and the texts are often distributed on the same row, so that the three pieces of texts should be spliced.
In which the wire text may be written in two or three lines due to its long length, it is necessary to splice the two or three lines of text.
In the case where the text at the incoming end may be "introduced by" or "AL1", it is necessary to splice the two texts into "introduced by AL1", where "denotes a space or a text space.
In summary, the concatenation of texts is processed by combining the content of texts and the position and distance relationship between texts.
When the data preprocessing is carried out on the text, the text is also required to be split. For example, phase sequence text, loop number text, and wire text may be written as a piece of text, and a space character is generally used to split the spliced text.
Referring to fig. 1, a method for recognizing a non-component text in an electrical drawing, wherein S1: screening out a candidate set of the non-component text through a regular expression or database query, and adopting a regular expression method, wherein regular expressions of corresponding types are shown in a table 2:
TABLE 2
Referring to fig. 1, a method for recognizing a non-component text in an electrical drawing, wherein S2: for candidate concentrated non-component texts, referring to fig. 3, the step of performing recognition processing according to text types includes the following steps:
s201: identifying and acquiring a distribution box tree structure;
s202: acquiring a candidate parameter text, and identifying and acquiring a distribution box parameter text; the number of panelboard parameter texts is typically 5, but may be 1 or more. Because the distribution box parameter text generally appears in blocks, according to the candidate set obtained before, the height of the text in the candidate set is combined, a rough range of the text blocks in the distribution box can be determined, the number of the description texts in the range is combined, and the remaining description texts are searched in the range of the text blocks, so that the complete distribution box parameter text is identified.
S203: acquiring a line inlet end straight line through the tree structure, acquiring a first text distance threshold value, and identifying a line inlet end text through the line inlet end straight line and the first text distance threshold value; because the candidate set of the text of the incoming line end given by the regular method is limited, the straight line of the incoming line end is identified by using a tree structure, then different distance thresholds are given for the candidate set and the non-candidate set, whether the text is in a certain range of the incoming line is judged, if yes, the text of the incoming line end is considered, and if not, the text of the incoming line end is considered to be possibly not.
S204: obtaining a wire outlet end electric wire through the tree structure, obtaining a second text distance threshold value, and identifying a wire outlet end text through the wire outlet end electric wire and the second text distance threshold value; the step of recognizing the text of the outlet end is basically the same as that of recognizing the text of the line segment, but because the text of the outlet end is often in the same column, the text in the same column as the currently recognized text of the outlet end is also often recognized as the text of the outlet end.
S205: identifying a phase sequence text through a regular expression, and deleting an isolated text in the phase sequence text according to a phase sequence text result; in general, almost all phase sequence texts can be found by using a regular expression, but the situation of multi-recognition is easy to occur, and then a phase sequence text rule is needed to filter the multi-recognition texts; if there are multiple phase-sequence texts on a wire, some isolated texts can be conditionally deleted, and the regular expression for finding the phase-sequence texts is shown in table 3:
TABLE 3
| ^ three-phase rotation $ | ^ three-phase even division $ | ^ three-phase equalization $ | ^ single-phase $ | ^ three-phase $ | ^[AaBbCc]Photo $ |
| ^UVW$ | ^UVWNPE$ | ^L[1-3]$ | ^L1L2L3$ | ^L1NPE$ | ^L1～3$ |
S206: identifying a loop number text through a regular expression and an electric wire, wherein the electric wire is obtained from a tree structure; because of the characteristics of the loop numbers, the loop numbers have strong regularity and relevance among the contents of the loop number texts:
each wire has at most one loop number;
all loop number texts in one distribution box are not repeated;
the loop number text within a switchbox is essentially numbered from 1 and is continuous, e.g., WL1, WL2.
Therefore, in the process of identifying the loop number text, the following steps are adopted by utilizing the rule:
s206-1: acquiring a text on the right side of the distribution box tree structure;
s206-2: classifying the texts according to the formats of the texts; for example, the formats of WL1, WL2, and WL3 to WL6 are all WL ″;
s206-3: traversing texts with the same format, and filtering the texts with repeated contents;
s206-4: matching and filtering the filtered text again to obtain a loop number text; e.g. the number N of eligible lists of text packets, treating these texts as loop number texts if N = 1; if N >1, filtering by using a rule, and if only one group of texts is left after filtering, taking the group of texts as loop number texts; if N >1, matching is performed using rules, such as text in accordance with the format of WL, WP, the group of text is directly used as the loop number text.
With regard to the wire text, the regular expression used before is generally amplified, and then a more reliable wire text can be identified.
Referring to fig. 1, a method for recognizing a non-component text in an electrical drawing, wherein S3: a step of adjusting the type of the text according to the recognition processing result, in which the text may be recognized as both the phase-sequence text and the loop-number text, and text missing recognition, because the text such as "L1", "L2", and "L3" may occur; by utilizing the similarity between texts, the method mainly comprises the following steps:
and acquiring a text list with a conflict recognition result.
For each text in the conflicting text list, acquiring the specific category of the text through the text position and the distribution box tree structure; if a text is recognized as a loop number text and a terminal text at the same time, judging according to the distance between the text and the terminal of the wire, if the text is near or on the right end point of the wire, judging as the terminal text, otherwise, judging as the loop number text.
And supplementing the text which is missed by recognition according to the recognition result. Because the non-component texts in each distribution box in the graph have extremely high similarity, the leakage repairing treatment can be realized by using the recognition results of other distribution boxes. As in the other boxes, "WL1" is identified as the loop number text, and in the current box, "WL1" is likely to also be the loop number text of the current box, if such text as "WL1" is also present.
Corresponding to the method in fig. 1, an embodiment of the present invention further provides an electrical drawing non-component text recognition system, including:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one program causes the at least one processor to implement an electrical drawing non-component text recognition method as described above.
Referring to fig. 2, an embodiment of the present invention further provides an electrical drawing non-component text recognition system, including:
the data preprocessing module is used for preprocessing the data of the non-component text;
the candidate text screening module is used for screening out a candidate set of the non-component text through a regular expression or database query;
the text recognition module is used for recognizing the candidate concentrated non-component texts according to the text types;
and the conflict text processing module is used for adjusting the type of the text according to the recognition processing result.
Corresponding to the system of the above embodiment, the embodiment of the invention also provides a storage medium, in which processor-executable instructions are stored, and the processor-executable instructions are used for executing the method for recognizing the non-component text of the electrical drawing when executed by the processor.
The step numbers in the above method embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A method for recognizing a non-component text of an electrical drawing is characterized by comprising the following steps:
screening out a candidate set of the non-component text through a regular expression or database query;
identifying the candidate concentrated non-component texts according to the text types;
adjusting the type of the text according to the recognition processing result;
the step of identifying and processing the non-component texts in the candidate set according to the text types comprises the following steps:
identifying and acquiring a distribution box tree structure;
acquiring a candidate parameter text, and identifying and acquiring a distribution box parameter text;
acquiring a straight line of a line inlet end through the tree structure, acquiring a first text distance threshold value, and identifying a text of the line inlet end through the straight line of the line inlet end and the first text distance threshold value;
obtaining a wire outlet end electric wire through the tree structure, obtaining a second text distance threshold value, and identifying a wire outlet end text through the wire outlet end electric wire and the second text distance threshold value;
identifying a phase sequence text through a regular expression, and deleting an isolated text in the phase sequence text according to a phase sequence text result;
identifying a loop number text through a regular expression and an electric wire, wherein the electric wire is obtained from a tree structure;
and identifying the wire text through the regular expression.
2. The method for recognizing the text of the non-component part of the electrical drawing as claimed in claim 1, wherein: further comprising the steps of:
filtering the non-component text through a regular expression;
performing text splicing processing on the non-component text;
and carrying out text splitting processing on the non-component text.
3. The method for recognizing the non-component text of the electrical drawing as recited in claim 2, wherein: the non-component text subjected to text splicing processing comprises a distribution box parameter text, an electric wire text and a wire inlet end text.
4. The method for recognizing the text of the non-component part of the electrical drawing as claimed in claim 1, wherein the text type comprises: the method comprises a distribution box parameter text, a wire inlet end text, a terminal text, a phase sequence text, a loop number text and a wire text.
5. The method for recognizing the text of the non-component part of the electrical drawing as claimed in claim 1, wherein: the step of adjusting the type of the text according to the recognition processing result comprises the following steps:
acquiring a text list with a conflict in the recognition result;
for each text in the conflicting text list, acquiring the specific category of the text through the text position and the distribution box tree structure;
and supplementing the text which is missed by recognition according to the recognition result.
6. The method for recognizing the text of the non-component part of the electrical drawing as claimed in claim 1, wherein: the step of identifying the loop number text by the regular expression and the electric wire, the electric wire obtaining from the tree structure, comprises the steps of:
acquiring a text on the right side of the distribution box tree structure;
classifying the texts according to the formats of the texts;
traversing texts with the same format, and filtering the texts with repeated contents;
and matching and filtering the filtered text again to obtain a loop number text.
7. The utility model provides an electrical drawing non-components and parts text recognition system which characterized in that: the method comprises the following steps:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, the at least one program causes the at least one processor to implement a method of electrical drawing non-component text recognition as claimed in any one of claims 1 to 6.
8. A storage medium having stored therein processor-executable instructions, which when executed by a processor, are configured to perform a method of electrical drawing non-component text recognition according to any one of claims 1-6.
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| CN108846398A (en) * | 2018-06-26 | 2018-11-20 | 北京天工矩阵信息技术有限公司 | CAD knows drawing method and device |
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