CN111553176A - Wireless transmission checking method and system suitable for wiring of transformer substation cubicle - Google Patents
Wireless transmission checking method and system suitable for wiring of transformer substation cubicle Download PDFInfo
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Abstract
The invention discloses a wireless transmission checking method and a wireless transmission checking system suitable for transformer substation screen cabinet wiring, wherein mobile equipment is used for binding screen cabinet equipment and cables of a transformer substation, generating corresponding electronic two-dimensional code identifiers, and sequentially storing the electronic two-dimensional code identifiers in a cloud database; collecting a transformer substation cabinet wiring picture to be checked, preprocessing the cabinet wiring picture and sending the preprocessed cabinet wiring picture to a cloud database for classified storage; the method comprises the steps that a USB Bluetooth protocol converter is matched with Bluetooth of a station end workstation, a preprocessed picture and a corresponding electronic two-dimensional code identifier in a cloud database are obtained and transmitted to a two-dimensional code image recognition server; and comparing and analyzing the preprocessed picture and the electronic two-dimensional code identifier by using the analysis model, outputting an inspection result, transmitting the inspection result by combining with the Bluetooth running body, and displaying the inspection result in the mobile equipment. The invention improves the data transmission safety and solves the problems that manual inspection of the wiring of the transformer substation screen cabinet is easy to miss and leak, the efficiency is low, potential safety hazards exist and the same appearance equipment cannot be identified.
Description
Technical Field
The invention relates to the technical field of transformer substation secondary circuit screen cabinet wiring, Bluetooth transmission and image quantity, in particular to a wireless transmission checking method and system suitable for transformer substation screen cabinet wiring.
Background
In recent years, with the rapid development of the internet of things technology, the wide application of the image intelligent identification technology, the popularization of the camera image monitoring technology of the high-definition network, and the development of the computer and communication technology, effective technical support is provided for the intelligent network.
The secondary system devices in the transformer substation are numerous and various cables are also various, and the secondary system devices comprise relay protection devices, safety automatic devices, fault recording devices, relay protection fault information system substations, merging unit devices, network switches, intelligent terminal devices and the like. The secondary wiring in the transformer substation is very complex, and the accuracy of the secondary wiring is related to the operation safety of the power grid, so that the secondary wiring has a very important position. Such complex external wiring also presents significant challenges to installation and maintenance. At present, manual on-site inspection of wiring of a secondary screen cabinet is mainly adopted, on-site technicians manually perform wiring operation according to construction drawings in the construction process of a secondary cable site of a transformer substation, wiring errors occur easily due to the fact that the secondary circuit screen cabinet of the transformer substation is various in wiring, large in quantity and large in workload, and meanwhile wiring change is often involved in operation and maintenance of a secondary system of the transformer substation, and new wiring errors are likely to be introduced. In actual work, the wiring errors are mainly checked in a point-to-point searching mode in the manual checking and debugging processes, and the method has the defects of low efficiency, large workload, missing detection and increased possibility of introducing the manual errors, and some wiring errors are always difficult to find on the site of the transformer substation, so that potential safety hazards are brought to the stable operation of the transformer substation.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, the technical problem solved by the invention is as follows: the problem that manual inspection transformer substation's screen cabinet wiring is easy to miss, inefficiency, have the potential safety hazard, the problem of the same appearance equipment of unable accurate discernment, two-dimensional code label fragile just can't generate under the off-line state.
In order to solve the technical problems, the invention provides the following technical scheme: binding screen cabinet equipment and cables of a transformer substation by using mobile equipment, generating corresponding electronic two-dimensional code identifications, and sequentially storing the electronic two-dimensional code identifications in a cloud database; collecting a transformer substation cabinet wiring picture to be checked, preprocessing the cabinet wiring picture and sending the preprocessed cabinet wiring picture to the cloud database for classified storage; matching the Bluetooth of a station end workstation by using a USB Bluetooth protocol converter, acquiring a preprocessed picture in the cloud database and the corresponding electronic two-dimensional code identifier, and transmitting the preprocessed picture and the corresponding electronic two-dimensional code identifier to a two-dimensional code image recognition server; and comparing and analyzing the preprocessed picture and the electronic two-dimensional code identifier by using an inspection model, outputting an inspection result, and transmitting the inspection result by combining a Bluetooth operation body and displaying the inspection result in the mobile equipment.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: generating the electronic two-dimensional code identifier comprises the steps of transmitting the transformer substation design drawing file to the mobile equipment by using a serial port protocol, respectively reading a screen cabinet ID, a cable ID and a terminal number label ID, sequentially performing classified storage, and completing matching and binding; dynamically acquiring bound ID information and data information recorded in the cloud database by using a js plug-in to generate the electronic two-dimensional code identifier; a two-dimension code reading engine is arranged in the mobile equipment, information in the electronic two-dimension code identification is automatically identified, if the wireless network state is normal, the identified information is directly fed back to the cloud database, and the information is transmitted by using the Bluetooth; and if the wireless network state is abnormal, the Bluetooth operation body directly receives and stores the identified information, and uploads the information to the cloud database for storage when the network recovers to be normal.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: the preprocessing comprises the steps of utilizing a noise threshold strategy to dry the screen cabinet wiring picture, setting a threshold value and sequentially detecting pixels in the screen cabinet wiring picture; comparing the pixel with other pixels in the neighborhood, judging whether the pixel is a noise point, if so, replacing the noise point by the average value of the gray scales of all the pixels in the neighborhood, and if not, outputting the noise point by the original gray scale value; sharpening the dried cabinet wiring picture by using a Sobel operator, and enhancing pixels on two sides of the edge of the picture by combining with weighted average; carrying out convolution on the Sobel operator and the screen cabinet wiring picture by utilizing differential approximate differential strategy processing to complete detection, and finding out a set of partial pixels with most obvious local brightness change in the image; and separating image areas with different meanings according to the gray scale, the color and the geometric properties of the screen cabinet wiring picture, selecting a threshold value, and performing binarization segmentation by using gray scale frequency distribution information to obtain a preprocessed information characteristic image.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: the step of recognizing the preprocessed picture comprises the mobile device is connected with the USB Bluetooth protocol converter of the station end workstation, is matched with the Bluetooth and transmits the preprocessed picture in the cloud database and the corresponding electronic two-dimensional code identifier to the two-dimensional code image recognition server; calling the inspection model in the two-dimensional code image recognition server to recognize and compare the preprocessed image, and recognizing corresponding electronic two-dimensional code identification information by the two-dimensional code reading engine in the mobile equipment; and the two-dimension code image recognition server respectively integrates and analyzes the inspection model recognition result and the two-dimension code reading engine recognition result, outputs a final recognition result and transmits the final recognition result to the mobile equipment by utilizing the Bluetooth operation body for displaying.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: the inspection model comprises a characteristic space analysis model, a decision model and a Bayesian discrimination model; the feature space analysis model is constructed by multi-feature collaborative classification, the decision model is constructed by a least square regression strategy, and the Bayes discriminant model is constructed by a Bayes linear discriminant analysis strategy; acquiring related data of the wiring of the transformer substation cubicle to construct a data sample, inputting the data sample into the characteristic space analysis model to analyze a multi-characteristic target of the data sample, and identifying the data quantity of target characteristics; transmitting the current magnitude in a circuit operation database in the transformer substation into the decision model, and judging the pulse magnitude transmitted by the connection wire of the screen cabinet by utilizing a stepwise partial least square regression strategy; converting the electronic two-dimensional code identification into a data operation index and importing the data operation index into the Bayesian discrimination model to analyze the switching value of the circuit equipment connecting line; the inspection model receives the data volume, the pulse volume and the switching value, performs fusion processing and abnormal probability calculation, and if the processing result probability is greater than or equal to 0.5, the inspection result is abnormal and the wiring of the screen cabinet is wrong; and if the probability of the processing result is less than 0.5, the checking result is normal, and the wiring of the screen cabinet is correct.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: the inspection model respectively compares the information characteristic image with a standard image stored in the cloud database, and analyzes whether the information characteristic image changes by using subtraction operation, as follows:
ΔPi(x，y)＝Pi(x，y)-P(x，y)
wherein, Pi(x, y): image currently to be discriminated, P (x, y): standard images in a cloud database; if the wiring operation state of the transformer substation screen cabinet is normal, the information characteristic image is not abnormal, and the formula is 0; and if the wiring operation state of the transformer substation screen cabinet is abnormal, the information characteristic image is abnormal, and the formula is not 0.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: generating the check result comprises the steps of utilizing the station-side workstation to enter a log directory stored in a script in a python36 environment, and sending an identification operation execution command; checking whether two log texts appear under the log catalog or not, if so, successfully reading the identification operation execution command, and if not, failing to read; entering an ai directory for running operation, when countless data are transmitted, presenting a prompt that the current log can be read temporarily, and when data are transmitted, feeding back and reading the identified information characteristic image path; and after the processing is finished, generating the inspection result and transmitting the inspection result to the cloud database for storage.
As a preferred embodiment of the wireless transmission inspection method applicable to the wiring of the substation cubicle, the method comprises the following steps: the inspection result comprises the number and the type of cables and the wiring space of the screen cabinet equipment; the method comprises the following steps of (1) screen cabinet ID, screen cabinet number, screen cabinet data type and affiliated substation ID; grouping label ID, grouping label name, grouping label data type and belonged screen cabinet ID; terminal number sleeve tag ID, terminal number, sleeve tag, belonging group tag ID.
As a preferred embodiment of the wireless transmission inspection system suitable for the wiring of the substation cubicle, the present invention provides: the transformer substation screen cabinet wiring system comprises an information acquisition module, a data acquisition module and a data processing module, wherein the information acquisition module is used for acquiring related data of the transformer substation screen cabinet wiring and shooting related picture information; the identification module is connected with the information acquisition module, is used for receiving input data, generating an identification result and storing the identification result in the cloud database, and comprises a calculation unit, an inspection unit, an extraction unit and an input/output management unit, wherein the calculation unit is used for calculating a frequency characteristic vector and a matrix relation of the data related to the wiring of the transformer substation screen cabinet and processing an optimization parameter and a threshold of the inspection model, the inspection unit is used for detecting, comparing and judging whether the calculation result of the calculation unit is consistent with a standard image in normal operation, the extraction unit is used for extracting an abnormal characteristic parameter in the inspection unit, and the input/output management unit is used for transmitting various required parameters and outputting the identification result to be stored in the cloud database; the positioning module is connected with the extraction unit and used for receiving the extracted abnormal characteristic parameters and locking the position of the abnormal characteristic parameters in the information characteristic image; the control module regulates and controls the information acquisition module, the identification module and the positioning module to operate, and is used for integrating the identification result and the characteristic position locked by the positioning module to generate the inspection result.
As a preferred embodiment of the wireless transmission inspection system suitable for the wiring of the substation cubicle, the present invention provides: the Bluetooth module is connected with the information acquisition module and the identification module, is used for data transmission among the USB Bluetooth protocol converter, the Bluetooth operation body and the two-dimensional code image identification server, receives the identification result of the identification module, converts the identification result into a data packet and uploads the data packet to the mobile terminal for display; and the display module is connected with the Bluetooth module and used for receiving the data packet, reading the information content of the data packet and displaying the information content in the mobile terminal.
The invention has the beneficial effects that: according to the invention, the data packet is encrypted and authenticated by using the encryption algorithm transmission in the Bluetooth 4.0, the safety of data transmission is improved, the tedious work of erecting a wireless network is avoided, the manpower and financial resources are saved, an inspection model and a cloud database Bluetooth wireless transmission strategy are added based on a two-dimension code technology and an image recognition technology, the problems that the wiring of a current manual inspection transformer substation screen cabinet is easy to miss and leak, the efficiency is low, potential safety hazards exist and the same appearance equipment cannot be accurately identified are solved, meanwhile, an electronic two-dimension code identification method is provided aiming at the problem that the existing two-dimension code label is easy to damage and needs to be maintained, the problem is avoided, the complete information of the two-dimension code identification can be obtained in an off-line state, and the equipment can be conveniently and manually inspected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic flow chart of a wireless transmission inspection method suitable for wiring of a substation cubicle according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of RGB color feature space coordinates of a wireless transmission inspection method suitable for wiring of a substation cabinet according to a first embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a generation flow of an electronic two-dimensional code identifier of a wireless transmission inspection method suitable for wiring of a substation cabinet according to a first embodiment of the present invention;
fig. 4 is a schematic diagram illustrating comparison efficiency and accuracy results of a conventional method and a method of the present invention for a wireless transmission inspection method for wiring of a substation cubicle according to a first embodiment of the present invention;
fig. 5 is a schematic block diagram illustrating a distribution of a wireless transmission inspection system for substation cubicle wiring according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a network topology of a wireless transmission inspection system suitable for wiring of a substation cubicle according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The secondary wiring in the transformer substation is very complex, and whether the secondary wiring is accurate or not is related to the operation safety of a power grid, so that the method has a very important position, the wiring of a secondary screen cabinet is mainly manually checked on site at present, the wiring operation is manually performed by field technicians according to construction drawings in the construction process of a secondary cable site of the transformer substation, and because the secondary circuit screen cabinet of the transformer substation is various in wiring, numerous and complex in quantity and large in workload, wiring errors are easy to occur, and meanwhile, the wiring change is often involved in the operation and maintenance of a secondary system of the transformer substation, and new wiring errors are possibly introduced.
Referring to fig. 1, a first embodiment of the present invention provides a wireless transmission inspection method suitable for substation cubicle wiring, including:
s1: and binding the screen cabinet equipment and the cable of the transformer substation by utilizing the mobile equipment, generating corresponding electronic two-dimensional code identifications, and sequentially storing the identifications in the cloud database. It should be noted that generating the electronic two-dimensional code identifier includes:
transmitting a transformer substation design drawing file to mobile equipment by using a serial port protocol, respectively reading a screen cabinet ID, a cable ID and a terminal number label ID, sequentially performing classified storage, and completing matching binding;
dynamically acquiring the bound ID information and data information recorded in a cloud database by using a js plug-in to generate an electronic two-dimensional code identifier;
a two-dimension code reading engine is arranged in the mobile equipment, information in the electronic two-dimension code identification is automatically identified, if the wireless network state is normal, the identified information is directly fed back to a cloud database and information is transmitted by using Bluetooth;
and if the wireless network state is abnormal, the Bluetooth operation body directly receives the identified information for storage, and uploads the information to a cloud database for storage when the network recovers to be normal.
S2: the method comprises the steps of collecting a to-be-inspected transformer substation cabinet wiring picture, preprocessing the cabinet wiring picture and sending the cabinet wiring picture to a cloud database for classified storage. It should be noted that the pretreatment includes:
removing dryness of the screen cabinet wiring picture by using a noise threshold strategy, setting a threshold value, and sequentially detecting pixels in the screen cabinet wiring picture;
comparing the pixel with other pixels in the neighborhood, judging whether the pixel is a noise point, if so, replacing the noise point by the average value of the gray levels of all the pixels in the neighborhood, and if not, outputting the noise point by the original gray value;
sharpening the dried cabinet wiring picture by using a Sobel operator, and enhancing pixels on two sides of the edge of the picture by combining with weighted average;
carrying out convolution on the Sobel operator and the screen cabinet wiring picture by utilizing differential approximate differential strategy processing to complete detection, and finding out a set of partial pixels with most obvious local brightness change in the image;
and separating image areas with different meanings according to the gray scale, the color and the geometric properties of the screen cabinet wiring picture, selecting a threshold value, and performing binarization segmentation by using gray scale frequency distribution information to obtain a preprocessed information characteristic image.
Further, the image segmentation needs to satisfy a certain segmentation condition, including:
there is a significant difference between adjacent regions;
the boundary of the divided region is ensured to be complete, and the spatial positioning precision of the edge is ensured;
the divided region has uniformity and connectivity, wherein the uniformity means that all pixel points in the region meet certain similarity based on gray scale, texture and color, and the connectivity means that a path connecting any two points exists in the region.
S3: and the USB Bluetooth protocol converter is matched with Bluetooth of the station end workstation, so that the preprocessed picture and the corresponding electronic two-dimensional code identifier in the cloud database are obtained and transmitted to the two-dimensional code image recognition server. It should be further noted that identifying the preprocessed pictures includes:
the mobile device is connected with a USB Bluetooth protocol converter of the station end workstation, is matched with Bluetooth, and transmits the preprocessed picture in the cloud database and the corresponding electronic two-dimensional code identifier to the two-dimensional code image recognition server;
calling an inspection model in a two-dimensional code image identification server to identify and compare preprocessed images, and identifying corresponding electronic two-dimensional code identification information by a two-dimensional code reading engine in the mobile equipment;
and the two-dimension code image recognition server respectively integrates and analyzes the inspection model recognition result and the two-dimension code reading engine recognition result, outputs a final recognition result and transmits the final recognition result to the mobile equipment by using the Bluetooth operator for displaying.
S4: and comparing and analyzing the preprocessed picture and the electronic two-dimensional code identifier by using the inspection model, outputting an inspection result, and transmitting the inspection result by combining the Bluetooth running body and displaying the inspection result in the mobile equipment. It should be further noted that, the checking model includes:
a characteristic space analysis model, a decision-making model and a Bayesian discrimination model;
the method comprises the following steps that a characteristic space analysis model is constructed by means of multi-characteristic collaborative classification, a decision model is constructed by means of a least square regression strategy, and a Bayesian discriminant model is constructed by means of a Bayesian linear discriminant analysis strategy;
acquiring related data of the wiring of the transformer substation cubicle to construct a data sample, inputting the data sample into a multi-feature target of an analysis data sample in a feature space analysis model, and identifying the data quantity of target features;
transmitting the current magnitude in a circuit operation database in a transformer substation into a decision model, and judging the pulse magnitude transmitted by the wiring of a screen cabinet by utilizing a stepwise partial least square regression strategy, wherein the decision model is as follows
Sm＝W1Xm+W2(Fitm-Pi)+w3
Pi∈{Lmimm，Lmaxm}
Wherein, Pi: substation cubicle wiring, { L }minm，Lmaxm}: connection range, X, of the cubicle to be inspectedm: alternative connection range function, Fitm: average value of historical data and current detection data, Sm: decision making judgment, W1: error rate of historical data, W2: current detected data error rate, W3: detecting an environmental error rate by historical data and current detection data;
converting the electronic two-dimensional code identification into a data operation index and introducing the data operation index into a Bayesian discrimination model to analyze the switching value of a circuit equipment connecting line;
the inspection model receives the data volume, the pulse volume and the switching value, fusion processing and abnormal probability calculation are carried out, if the processing result probability is more than or equal to 0.5, the inspection result is abnormal, and the wiring of the screen cabinet is wrong;
if the probability of the processing result is less than 0.5, the checking result is normal, and the wiring of the screen cabinet is correct;
the examination model is as follows
P(Bi|Ai)＝Bi|Aii＝1,2,……n
Wherein, Bi: number of correctly identified lines in the ith co-check factor, Ai: the number of lines identified in the ith co-check factor.
Further, the method also comprises the following steps:
the inspection model respectively compares the information characteristic image with the standard pictures stored in the cloud database, and analyzes whether the information characteristic image changes by using subtraction operation, as follows:
ΔPi(x，y)＝Pi(x，y)-P(x，y)
wherein, Pi(x, y): image currently to be discriminated, P (x, y): standard images in a cloud database;
if the wiring operation state of the transformer substation screen cabinet is normal, the information characteristic image is not abnormal, and the formula is 0;
and if the wiring operation state of the transformer substation screen cabinet is abnormal, the information characteristic image is abnormal, and the formula is not 0.
Further, generating the inspection result includes:
a station-side workstation is used for entering a log directory stored in a script in a python36 environment, and sending an identification operation execution command;
checking whether two log texts appear under the log catalog, if so, successfully reading the identification operation execution command, and if not, failing to read;
entering an ai directory for running operation, when countless data are transmitted, presenting a prompt that the current log can be read temporarily, and when data are transmitted, feeding back and reading an identified information characteristic image path;
and after the processing is finished, generating a checking result and transmitting the checking result to a cloud database for storage.
The inspection result includes:
the number and the type of the cables and the wiring space of the screen cabinet equipment are determined;
the method comprises the following steps of (1) screen cabinet ID, screen cabinet number, screen cabinet data type and affiliated substation ID;
grouping label ID, grouping label name, grouping label data type and belonged screen cabinet ID;
terminal number sleeve tag ID, terminal number, sleeve tag, belonging group tag ID.
Still further, referring to fig. 3, this embodiment needs to be described in that an electronic two-dimensional code identifier generating method suitable for substation equipment inspection is provided, and includes the following steps:
(1) inputting related data of wiring of a substation screen cabinet to form a coded text;
(2) determining the character type of the coded text content, converting the character type into a corresponding symbol character by using a conversion rule, and selecting an error correction level;
(3) converting the symbolic characters into binary numbers which can be identified by a CPU (central processing unit) according to an encoding rule;
(4) dividing the data code words into n blocks according to the error correction level, calculating corresponding error correction code words for each block by utilizing a polynomial algorithm, and sequentially assembling the data and the error correction code words of each block into a final sequence according to the sequence;
(5) and conducting xor operation mask with the allocated and arranged symbol characters to form the electronic two-dimensional code identifier.
Preferably, referring to fig. 2, preprocessing the cabinet wiring picture is to better analyze the characteristics of the cabinet equipment and the wiring manner, and select image characteristics capable of distinguishing the cabinet wiring category in advance as an input vector for classification and identification during identification and analysis, for example, when the electric power equipment category is identified, defining the area as a detection area, performing difference and cumulative image processing, comparing the detection area with an image in normal operation (comparing the detection area with a reference image in a cloud database and a stored historical image to determine the distortion degree of the electric power equipment image), and determining whether a substation scene image changes or not and whether the operation state is abnormal or not; the method extracts the color features in the information feature image while preprocessing, obtains RGB color feature space coordinates as identified feature vectors, performs positioning analysis on an identified target (abnormal feature) in the image, assists an inspection model to perform operation identification, and obtains an accurate identification result.
Preferably, in order to better embody the feasibility of the method of the present invention, the present embodiment is illustrated by comparing three common image recognition methods, and although the existing substation equipment object feature matching recognition method automatically recognizes an equipment object by using an image recognition technology, when a plurality of similar devices exist in one scene, a problem that the equipment object cannot be accurately recognized and distinguished occurs; secondly, the existing template matching identification method needs to carry out identification through matching of a plurality of objects, needs to manually mark different equipment object templates, is time-consuming and labor-consuming, and increases the workload of maintenance and repair personnel; the traditional machine learning method is generally applied to the application fields of face recognition and scene recognition, has the same or similar characteristics for the same type of equipment in the transformer substation, and cannot accurately distinguish the object names of the equipment with the same appearance, so that the method is not feasible for transformer substation equipment recognition.
Preferably, in order to verify and explain the technical effect adopted in the invention, the embodiment selects the traditional manual on-site inspection screen cabinet wiring method to perform a comparison test with the method of the invention, compares the test result by means of scientific demonstration, and verifies the real effect of the method of the invention; in order to verify that the method has accurate inspection and identification, higher inspection efficiency, no need of maintaining the equipment label, reduction of the workload of maintenance personnel and elimination of certain potential safety hazard compared with the traditional method, the embodiment adopts the traditional method and the method to respectively inspect and test the wiring of the screen cabinet in a certain transformer substation, and the output test result refers to fig. 4 and table 1.
Table 1: the method of the invention checks the result part schematic table.
| Name of field | Description of the invention | Data type | Remarks for note |
| Screen cabinet ID | Main key | Int | Self-increasing |
| Name | Screen cabinet number | Varchar | |
| SubstaionId | Affiliated substation ID | Varchar |
Referring to the schematic diagram of fig. 4, the advantages and disadvantages of the two inspection methods can be visually compared, specifically, as the inspection time and the number of the wiring of the screen cabinet increase, the curve corresponding to the conventional manual field inspection method for the wiring of the screen cabinet changes, although the curve shows a growth trend, the curve is smooth and the growth time is long, but the curve corresponding to the method of the present invention changes obviously and increases in a steep slope manner.
Example 2
Referring to fig. 5 and 6, a second embodiment of the present invention, which is different from the first embodiment, provides a wireless transmission inspection system suitable for wiring of a substation cubicle, including an information acquisition module 100, an identification module 200, a positioning module 300, a control module 400, a bluetooth module 500, and a display module 600, wherein the information acquisition module 100 is a bridge connecting a computer with the external physical world, the identification module 200 is an operation core for interpreting computer instructions and processing data in computer software, and the positioning module 300 is a signal connector connected with the computer in a wireless or wired manner, specifically, as follows:
the information acquisition module 100 is used for acquiring related data of wiring of the substation cubicle and shooting related picture information; the communication module based on the remote data acquisition platform integrates the communication chip and the storage chip on a circuit board, so that the communication module has the function of transmitting data through the remote data acquisition platform, for example, a computer, a single chip microcomputer and an ARM can be connected with the remote data acquisition platform through an RS232 serial port, and various voice and data communication functions are realized through the AT instruction control module.
The identification module 200 is connected to the information acquisition module 100, and is configured to receive input data, generate an identification result, and store the identification result in a cloud database, where the identification module includes a calculation unit 201, an inspection unit 202, an extraction unit 203, and an input/output management unit 204, the calculation unit 201 is configured to calculate a frequency characteristic vector and a matrix relation of data related to wiring of a substation cubicle, and process an optimization parameter and a threshold of an analysis model, the inspection unit 202 is configured to detect, compare, and determine whether the calculation result of the calculation unit 201 matches a standard image in normal operation, the extraction unit 203 is configured to extract an abnormal characteristic parameter in the inspection unit 202, and the input/output management unit 204 is configured to transmit various required parameters, and output the identification result to be stored in the cloud database.
The positioning module 300 is connected to the extracting unit 203, and is configured to receive the extracted abnormal characteristic parameter and lock a position of the abnormal characteristic parameter in the information characteristic image; the related input and output protocol format is obtained through a serial communication protocol technology, the related input and output protocol format mainly comprises a data type and an information format, information content is in communication connection with the identification module 200 through a serial port, when the positioning module 300 receives abnormal parameters in the extraction unit 203, the positioning module 300 calculates the pseudo distance between the abnormal parameters and the abnormal parameters through CPU operation of a system, and the position of the abnormal feature in the information feature image is calculated through a distance intersection method.
The control module 400 regulates and controls the operation of the information acquisition module 100, the identification module 200 and the positioning module 300, and is used for integrating the identification result and the feature position locked by the positioning module 300 to generate an inspection result.
The bluetooth module 500 is connected to the information collecting module 100 and the identification module 200, and is used for data transmission among the USB bluetooth protocol converter, the bluetooth operation body, and the two-dimensional code image identification server, receiving the identification result of the identification module 200, and converting the identification result into a data packet to be uploaded to the mobile terminal for display.
The display module 600 is connected to the bluetooth module 500, and is configured to receive a data packet, read information content of the data packet, and display the information content in the mobile terminal.
In popular terms, the identification module 200 is mainly divided into three layers, including a control layer, an operation layer and a storage layer, wherein the control layer is a command control center of the identification module 200 and is composed of an instruction register IR, an instruction decoder ID and an operation controller OC, the control layer can sequentially take out each instruction from a memory according to a program pre-programmed by a user, place the instruction in the instruction register IR, analyze and determine the instruction by the instruction decoder, inform the operation controller OC of operation, and send a micro-operation control signal to a corresponding component according to a determined time sequence; the operation layer is the core of the calculation unit 201, can execute arithmetic operation (such as addition, subtraction, multiplication, division and addition operation thereof) and logic operation (such as shift, logic test or two-value comparison), is connected to the control layer, and performs operation by receiving a control signal of the control layer; the storage layer is a database of the identification module 200, which can store data (both pending and processed).
It should be recognized that embodiments of the present invention can be realized and implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with the computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, according to the methods and figures described in the detailed description. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, the operations of processes described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable interface, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described herein includes these and other different types of non-transitory computer-readable storage media when such media include instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein. A computer program can be applied to input data to perform the functions described herein to transform the input data to generate output data that is stored to non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A wireless transmission inspection method suitable for wiring of a transformer substation cabinet is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
binding screen cabinet equipment and cables of the transformer substation by using the mobile equipment, generating corresponding electronic two-dimensional code identifications, and sequentially storing the electronic two-dimensional code identifications in a cloud database;
collecting a transformer substation cabinet wiring picture to be checked, preprocessing the cabinet wiring picture and sending the preprocessed cabinet wiring picture to the cloud database for classified storage;
matching the Bluetooth of a station end workstation by using a USB Bluetooth protocol converter, acquiring a preprocessed picture in the cloud database and the corresponding electronic two-dimensional code identifier, and transmitting the preprocessed picture and the corresponding electronic two-dimensional code identifier to a two-dimensional code image recognition server;
and comparing and analyzing the preprocessed picture and the electronic two-dimensional code identifier by using an inspection model, outputting an inspection result, and transmitting the inspection result by combining a Bluetooth operation body and displaying the inspection result in the mobile equipment.
2. The wireless transmission inspection method suitable for substation cubicle wiring of claim 1, wherein: generating the electronic two-dimensional code identification includes,
transmitting the transformer substation design drawing file to the mobile equipment by using a serial port protocol, respectively reading a screen cabinet ID, a cable ID and a terminal number label ID, and sequentially performing classified storage to complete matching and binding;
dynamically acquiring bound ID information and data information recorded in the cloud database by using a js plug-in to generate the electronic two-dimensional code identifier;
a two-dimension code reading engine is arranged in the mobile equipment, information in the electronic two-dimension code identification is automatically identified, if the wireless network state is normal, the identified information is directly fed back to the cloud database, and the information is transmitted by using the Bluetooth;
and if the wireless network state is abnormal, the Bluetooth operation body directly receives and stores the identified information, and uploads the information to the cloud database for storage when the network recovers to be normal.
3. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 1 or 2, characterized in that: the pre-treatment comprises the steps of,
eliminating noise points of the screen cabinet wiring picture, setting a detection value, and sequentially detecting pixels in the screen cabinet wiring picture;
comparing the pixel with other pixels in the neighborhood, judging whether the pixel is a noise point, if so, replacing the noise point by the average value of the gray scales of all the pixels in the neighborhood, and if not, outputting the noise point by the original gray scale value;
sharpening the dried cabinet wiring picture by using a Sobel operator, and enhancing pixels on two sides of the edge of the picture by combining with weighted average;
carrying out convolution on the Sobel operator and the screen cabinet wiring picture by utilizing differential approximate differential strategy processing to complete detection, and finding out a set of partial pixels with most obvious local brightness change in the image;
and separating image areas with different meanings according to the gray scale, the color and the geometric properties of the screen cabinet wiring picture, selecting a threshold value, and performing binarization segmentation by using gray scale frequency distribution information to obtain a preprocessed information characteristic image.
4. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 3, characterized in that: identifying the pre-processed picture includes identifying that,
the mobile device is connected with the USB Bluetooth protocol converter of the station end workstation, is matched with the Bluetooth and transmits the preprocessed picture in the cloud database and the corresponding electronic two-dimensional code identifier to the two-dimensional code image recognition server;
calling the inspection model in the two-dimensional code image recognition server to recognize and compare the preprocessed image, and recognizing corresponding electronic two-dimensional code identification information by the two-dimensional code reading engine in the mobile equipment;
and the two-dimension code image recognition server respectively integrates and analyzes the inspection model recognition result and the two-dimension code reading engine recognition result, outputs a final recognition result and transmits the final recognition result to the mobile equipment by utilizing the Bluetooth operation body for displaying.
5. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 4, characterized in that: the inspection model comprises a characteristic space analysis model, a decision model and a Bayesian discrimination model;
the feature space analysis model is constructed by multi-feature collaborative classification, the decision model is constructed by a least square regression strategy, and the Bayes discriminant model is constructed by a Bayes linear discriminant analysis strategy;
acquiring related data of the wiring of the transformer substation cubicle to construct a data sample, inputting the data sample into the characteristic space analysis model to analyze a multi-characteristic target of the data sample, and identifying the data quantity of target characteristics;
transmitting the current magnitude in a circuit operation database in the transformer substation into the decision model, and judging the pulse magnitude transmitted by the connection wire of the screen cabinet by utilizing a stepwise partial least square regression strategy;
converting the electronic two-dimensional code identification into a data operation index and importing the data operation index into the Bayesian discrimination model to analyze the switching value of the circuit equipment connecting line;
the inspection model receives the data volume, the pulse volume and the switching value, performs fusion processing and abnormal probability calculation, and if the processing result probability is greater than or equal to 0.5, the inspection result is abnormal and the wiring of the screen cabinet is wrong;
and if the probability of the processing result is less than 0.5, the checking result is normal, and the wiring of the screen cabinet is correct.
6. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 4 or 5, characterized in that: also comprises the following steps of (1) preparing,
the inspection model respectively compares the information characteristic image with standard pictures stored in the cloud database, and analyzes whether the information characteristic image changes by using subtraction operation, as follows:
ΔPi(x，y)＝Pi(x，y)-P(x，y)
wherein, Pi(x, y): image currently to be discriminated, P (x, y): standard images in a cloud database;
if the wiring operation state of the transformer substation screen cabinet is normal, the information characteristic image is not abnormal, and the formula is 0;
and if the wiring operation state of the transformer substation screen cabinet is abnormal, the information characteristic image is abnormal, and the formula is not 0.
7. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 6, characterized in that: generating the result of the inspection may include,
the station-side workstation is used for entering a log directory stored in a script in a python36 environment, and sending an identification operation execution command;
checking whether two log texts appear under the log catalog or not, if so, successfully reading the identification operation execution command, and if not, failing to read;
entering an ai directory for running operation, when countless data are transmitted, presenting a prompt that the current log can be read temporarily, and when data are transmitted, feeding back and reading the identified information characteristic image path;
and after the processing is finished, generating the inspection result and transmitting the inspection result to the cloud database for storage.
8. The wireless transmission inspection method suitable for substation cubicle wiring according to claim 7, characterized in that: the result of the examination includes the results of,
the number and the type of the cables and the wiring space of the screen cabinet equipment are determined;
the method comprises the following steps of (1) screen cabinet ID, screen cabinet number, screen cabinet data type and affiliated substation ID;
grouping label ID, grouping label name, grouping label data type and belonged screen cabinet ID;
terminal number sleeve tag ID, terminal number, sleeve tag, belonging group tag ID.
9. The utility model provides a wireless transmission inspection system suitable for transformer substation's screen cabinet wiring which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the information acquisition module (100) is used for acquiring related data of wiring of the transformer substation screen cabinet and shooting related picture information;
the identification module (200) is connected with the information acquisition module (100) and used for receiving input data, generating the identification result and storing the identification result in the cloud database, it comprises a calculation unit (201), a check unit (202), an extraction unit (203) and an input/output management unit (204), the calculation unit (201) is used for calculating a frequency characteristic vector and a matrix relation of the transformer substation cabinet wiring related data, processing an optimization parameter and a threshold value of the inspection model, the checking unit (202) is used for detecting, comparing and judging whether the calculation result of the calculating unit (201) is in accordance with the standard image operated in a normal state, the extraction unit (203) is used for extracting abnormal characteristic parameters in the inspection unit (202), the input and output management unit (204) is used for transmitting various required parameters and outputting the identification result to be stored in the cloud database;
the positioning module (300) is connected to the extraction unit (203) and is used for receiving the extracted abnormal characteristic parameters and locking the position of the abnormal characteristic parameters in the information characteristic image;
the control module (400) regulates and controls the information acquisition module (100), the identification module (200) and the positioning module (300) to operate, and is used for integrating the identification result and the characteristic position locked by the positioning module (300) to generate the inspection result.
10. The wireless transmission inspection system for substation cubicle wiring of claim 9 wherein: also comprises the following steps of (1) preparing,
the Bluetooth module (500) is connected to the information acquisition module (100) and the identification module (200), and is used for data transmission among the USB Bluetooth protocol converter, the Bluetooth operator and the two-dimensional code image identification server, receiving the identification result of the identification module (200), converting the identification result into a data packet, and uploading the data packet to a mobile terminal for display;
and the display module (600) is connected with the Bluetooth module (500) and is used for receiving the data packet, reading the information content of the data packet and displaying the information content in the mobile terminal.
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