CN114511943A - Distribution line infrared inspection method and system based on mobile terminal - Google Patents
Distribution line infrared inspection method and system based on mobile terminal Download PDFInfo
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- G—PHYSICS
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
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Abstract
The invention discloses a distribution line infrared inspection method and a distribution line infrared inspection system based on a mobile terminal, wherein the method comprises the following steps: acquiring a first highest temperature value of the field equipment and a thermal image of the three-phase equipment, and judging whether the first highest temperature value is greater than a preset temperature threshold value; if the temperature is not greater than the preset temperature threshold, performing open operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image; converting an RGB pixel value matrix in at least one single-phase equipment thermal image into a gray level image pixel value matrix, and mapping the gray level image pixel value matrix into a temperature distribution matrix; acquiring whether the maximum difference value of the inter-phase temperatures in at least one single-phase equipment thermal image is larger than a preset inter-phase threshold value or not; if the defect level is larger than the preset interphase threshold, judging the defect level of the field equipment according to the preset interphase threshold so as to generate a first defect record. The method can provide data support for identifying and developing deep analysis of the defect hidden danger of the distribution network line, and has an important effect on improving the power supply reliability of the distribution network line.
Description
Technical Field
The invention belongs to the technical field of power system analysis, and particularly relates to a distribution line infrared inspection method and system based on a mobile terminal.
Background
The distribution network line is responsible for directly supplying power to users, and all the electric energy must be transmitted to the electricity consumers through the distribution network line. The hidden trouble of the defect of the distribution equipment is easy to cause the interruption of the line power supply, in particular to the defect caused by the heating of the equipment pile head, the wire clamp and the like due to poor contact and the like. Distribution lines and equipment points are multiple and wide, heating defects are numerous, operators need to carry out regular inspection and special inspection on the lines and the equipment according to inspection requirements, and in the process of inspection of current operation and maintenance personnel, basic equipment accounts are in an internal network, an external network cannot be associated with the equipment accounts and cannot inquire equipment information, even if defects are found, the power grid production management system cannot be uploaded in time, the health state of the equipment cannot be evaluated in time, the historical health state of the equipment cannot be inquired through big data, and the working efficiency of the operators is seriously influenced.
Disclosure of Invention
The invention provides a distribution line infrared inspection method and a distribution line infrared inspection system based on a mobile terminal, which are used for solving at least one of the technical problems.
In a first aspect, the invention provides a distribution line infrared inspection method based on a mobile terminal, which comprises the following steps: according to the mobile terminal, the field device is redExternal temperature measurement, namely acquiring a first highest temperature value of the field device and a three-phase device thermal image, and judging whether the first highest temperature value is greater than a preset temperature threshold value or not, wherein the three-phase device thermal image is an image of heat or temperature radiated outwards by the three-phase device; if the first highest temperature value is not larger than a preset temperature threshold value, performing open operation on a binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image, wherein an expression for performing open operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to turn on the operator, the switch is turned on,
in order to etch the operator, the etching process,
is the inflation operator; converting the RGB pixel value matrix in the at least one single-phase device thermal image into a gray scale image pixel value matrix, and mapping the gray scale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, wherein the expression for calculating the gray scale image pixel value matrix is as follows:
in the formula (I), wherein,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values; calculating an expression of the temperature distribution matrix as follows:
in the formula (I), wherein,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
the temperature of the single-phase equipment is the heat or temperature radiated outwards by the single-phase equipment; acquiring a second highest temperature value and a lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judging whether an interphase temperature maximum difference value is greater than a preset interphase threshold value, wherein the interphase temperature maximum difference value is the difference value between the second highest temperature value and the lowest temperature value; and if the maximum difference value of the inter-phase temperatures is larger than a preset inter-phase threshold value, judging the defect grade of the field equipment according to the preset inter-phase threshold value to generate a first defect record, and issuing a maintenance task according to the first defect record.
In a second aspect, the invention provides a distribution line infrared inspection system based on a mobile terminal, which comprises: the first judgment module is configured to perform infrared temperature measurement on field equipment according to the mobile terminal, so that a first highest temperature value and a three-phase equipment thermal image of the field equipment are obtained, and whether the first highest temperature value is greater than a preset temperature threshold value is judged, wherein the three-phase equipment thermal image is heat or a temperature image radiated outwards by the three-phase equipment; the segmentation module is configured to perform an opening operation on the binary image of the three-phase device thermal image if the first highest temperature value is not greater than a preset temperature threshold value, so that at least one single-phase device thermal image is extracted and segmented, wherein an expression for performing the opening operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to turn on the operator, the switch is turned on,
in order to etch the operator, the etching process,
is the inflation operator; a mapping module configured to convert an RGB pixel value matrix in the at least one single-phase device thermography into a grayscale image pixel value matrix and map the grayscale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, wherein an expression of the grayscale image pixel value matrix is calculated as:
in the formula (I), wherein,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values; calculating an expression of the temperature distribution matrix as follows:
in the formula (I), wherein,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
the temperature of the single-phase equipment is the heat or temperature radiated outwards by the single-phase equipment; the second judging module is configured to obtain a second highest temperature value and a second lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judge whether an inter-phase temperature maximum difference value is larger than a preset inter-phase threshold value, wherein the inter-phase temperature maximum difference value is a difference value between the second highest temperature value and the lowest temperature value; a generating module configured to determine if the phase-to-phase temperature is maximumAnd if the difference value is greater than a preset interphase threshold value, judging the defect grade of the field equipment according to the preset interphase threshold value to generate a first defect record, and issuing a maintenance task according to the first defect record.
In a third aspect, an electronic device is provided, comprising: the system comprises at least one processor and a memory which is in communication connection with the at least one processor, wherein the memory stores instructions which can be executed by the at least one processor, and the instructions are executed by the at least one processor so as to enable the at least one processor to execute the steps of the mobile terminal-based distribution line infrared inspection method according to any embodiment of the invention.
In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the program instructions, when executed by a processor, cause the processor to perform the steps of the mobile terminal based distribution line infrared inspection method according to any of the embodiments of the present invention.
According to the distribution line infrared inspection method and system based on the mobile terminal, aiming at the fault display characteristics of the thermal image of the three-phase equipment, automatic identification of the thermal fault defect of the three-phase equipment is implemented based on image processing and phase-to-phase temperature difference analysis, and efficient and automatic identification of the thermal fault defect of the power equipment based on the analysis of a highest temperature value comparison method and a phase-to-phase temperature difference method is achieved.
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 are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a distribution line infrared inspection method based on a mobile terminal according to an embodiment of the present invention;
fig. 2 is a flowchart of another distribution line infrared inspection method based on a mobile terminal according to an embodiment of the present invention;
fig. 3 is a block diagram of a distribution line infrared inspection system based on a mobile terminal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of a distribution line infrared inspection method based on a mobile terminal according to the present application is shown.
As shown in fig. 1, the distribution line infrared inspection method based on the mobile terminal specifically includes the following steps:
step S101, carrying out infrared temperature measurement on field equipment according to the mobile terminal, obtaining a first highest temperature value of the field equipment and a three-phase equipment thermal image, and judging whether the first highest temperature value is greater than a preset temperature threshold value.
Specifically, the mobile terminal may be a portable computer or a mobile phone, in this embodiment, the infrared camera is connected to the mobile phone through the USB interface, and then the three-phase device is photographed through the mobile phone connected to the infrared camera, so as to obtain a thermal image of the three-phase device. Wherein, three-phase equipment is the equipment (like three-phase transformer) that is connected to three-phase power supply, and cell-phone APP is from taking infrared temperature measurement procedure, through an external infrared camera at the cell-phone, inserts cell-phone USB socket with infrared camera, and this USB equipment can automatic identification by cell-phone APP. The inspection work order task is clicked through the mobile phone APP, infrared camera shooting is clicked at the task, the thermal imager of the mobile phone is started by software, the screen of the mobile phone enters an infrared observation picture, and point temperature measurement, line temperature measurement analysis and area temperature measurement analysis are conducted on field equipment. The infrared imaging head can receive infrared radiation emitted by the equipment and display the surface temperature value or the temperature field distribution of the target equipment in the form of a digital or two-dimensional thermal image.
In a specific embodiment, a detection plan is automatically and manually created in a power supply service command system according to the operation condition of equipment, the plan is issued to a mobile terminal, a detection task is received through the mobile terminal, the electrified detection of power distribution equipment is carried out according to a terminal patrol navigation route, the field scanning equipment real object ID obtains information such as an equipment account, a detection standard, a historical detection record, an equipment historical defect hidden danger record and the like, a work order task is clicked through software, an infrared camera is clicked at the task, the software starts a thermal imager of a mobile phone, and a screen of the mobile phone enters an infrared observation picture.
1) Point temperature measurement: clicking a point temperature measurement button to enter a point temperature measurement mode, displaying the temperature information of three points of a central temperature point, a highest temperature point and a lowest temperature point on a picture, and clicking a screen at the moment to add the temperature information of a self-defined point.
2) And (3) line temperature measurement analysis: at the moment, the fingers drag and draw a horizontal line on the screen, the highest temperature and the lowest temperature points on the horizontal line can be automatically analyzed, and relevant information is identified.
3) And (3) area temperature measurement analysis: at the moment, the fingers drag to draw a rectangle on the screen, the highest temperature and the lowest temperature points in the rectangular area can be automatically analyzed, and relevant information is identified.
It should be noted that the maximum temperature of the device is measured by infrared temperature measurement photographing, the maximum temperature is compared with a threshold temperature, and the defect level of the device is determined according to the threshold, wherein the threshold temperature is multiple, and the determining of the defect level of the device according to the threshold specifically includes:
critical defects: the actual measurement temperature of the electrical equipment is more than 90 ℃;
serious defects are as follows: 80 ℃ and the actual measurement temperature of the electrical equipment is less than or equal to 90 ℃;
general disadvantages: 75 ℃ and the measured temperature of the electrical equipment is less than or equal to 80 ℃.
And S102, if the first highest temperature value is not larger than a preset temperature threshold value, performing open operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image.
In this embodiment, since the on operation has a better "cut-off" effect on the unreliable connection in the binary image of the three-phase device thermal image, the morphological processing is performed on the three-phase device thermal image, that is, the morphological on operation is performed on the binary image of the three-phase device thermal image, so that at least one single-phase device thermal image can be extracted and segmented, wherein the expression for performing the on operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to turn on the operator, the switch is turned on,
in order to etch the operator, the etching process,
the dilation operator.
Step S103, converting the RGB pixel value matrix in the at least one single-phase device thermal image into a gray level image pixel value matrix, and mapping the gray level image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval.
In this embodiment, the temperature of the thermal image is represented by the brightness of the color, and is calibrated by the color of the color strip, so that the thermal image matrix is converted into a temperature distribution matrix of the corresponding pixels, i.e., the temperature contrast can be performed. The RGB pixel values of the color thermography image can be converted into a grayscale image reflecting the degree of lightness and darkness:
in the formula (I), the compound is shown in the specification,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values;
temperature interval of image given by thermographic color bar
Mapping the gray scale image pixel value matrix to the temperature interval, namely:
in the formula (I), the compound is shown in the specification,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
is the temperature of the single-phase device, i.e. the heat or temperature radiated outwards by the single-phase device.
Step S104, acquiring a second highest temperature value and a lowest temperature value in the thermal image of the at least one single-phase device based on the temperature distribution matrix, and judging whether a maximum difference value of the inter-phase temperatures is greater than a preset inter-phase threshold value, wherein the maximum difference value of the inter-phase temperatures is the difference value of the second highest temperature value and the lowest temperature value.
In this embodiment, the maximum temperature and the minimum temperature of three single-phase devices are obtained by comparing the temperature distribution matrices of the three single-phase devices, and the maximum difference between the phases is obtained, so as to compare the maximum difference between the phases with a preset phase threshold.
And S105, if the maximum difference value of the inter-phase temperatures is larger than a preset inter-phase threshold value, judging the defect grade of the field equipment according to the preset inter-phase threshold value to generate a first defect record, and issuing an overhaul task according to the first defect record.
In this embodiment, the preset inter-phase threshold is set to 10K, 30K, or 40K, and the defect degree of the device is further determined according to the comparison result between the maximum difference value of the inter-phase temperature of the infrared device and the threshold temperature, wherein the defect grade of the device is determined according to the preset inter-phase threshold:
critical defects: the temperature difference between phases is more than 40K;
the temperature difference between phases is less than or equal to 40K when the serious defect is 30K;
general disadvantages: 10K < the phase temperature is less than or equal to 30K.
In summary, the method disclosed by the application is used for automatically identifying the thermal fault defect of the three-phase equipment based on image processing and phase-to-phase temperature difference analysis aiming at the fault display characteristic of the thermal image of the three-phase equipment, and realizing efficient and automatic identification of the thermal fault defect of the power equipment based on analysis of a maximum temperature value comparison method and a phase-to-phase temperature difference method. Compared with the traditional equipment thermal image manual detection and analysis method, the method can realize the automatic identification of the mobile terminal of the equipment thermal fault, has higher efficiency and accuracy compared with manual detection, and can realize the automatic identification of the thermal fault defect of the three-phase equipment. Meanwhile, the system provides great convenience for operation and maintenance personnel to patrol, can enhance the situation that the operation and maintenance personnel control the operation faults of the line and equipment, provides scientific basis and data support for the operation and maintenance personnel of the distribution network, is favorable for the operation and maintenance personnel of the distribution network to carry out targeted operation and maintenance work, effectively improves the effectiveness of the operation and maintenance work through various suggestions provided by the system, improves the reliability of line power supply, and has a remarkable improvement effect.
In some optional embodiments, the method further comprises: if the first maximum temperature value is larger than a preset temperature threshold value, judging the defect grade of the field equipment according to the preset temperature threshold value to generate a second defect record; performing open operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image; converting an RGB pixel value matrix in at least one single-phase equipment thermal image into a gray level image pixel value matrix, and mapping the gray level image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval; acquiring a second highest temperature value and a lowest temperature value in at least one single-phase equipment thermal image based on the temperature distribution matrix, and judging whether the maximum difference value of the inter-phase temperatures is greater than a preset inter-phase threshold value or not; and if the maximum difference value of the inter-phase temperatures is not larger than the preset inter-phase threshold value, issuing a maintenance task according to the second defect record.
Referring to fig. 2, a flow chart of another distribution line infrared inspection method based on a mobile terminal according to the present application is shown. The flow chart is primarily a flow chart of steps further defined for the additional flow chart of fig. 1.
As shown in fig. 2, in step S201, a patrol work order issued by the intranet system is obtained according to the mobile terminal, and the mobile terminal goes to the field device according to the GIS geographic information in the patrol work order.
In this embodiment, the power intranet system automatically makes a patrol plan according to the operation condition of the equipment, patrol period and climate, environmental change conditions, and the requirements of the superior production management department. According to the patrol plan, when patrolling on site, the mobile terminal accesses the power intranet database through the isolating device to obtain a patrol task, equipment patrol work is executed according to a standard patrol card, and the terminal automatically records patrol starting time, patrol ending time and the like. Meanwhile, the machine account of the equipment can be taken out, the modules with defects and hidden dangers are linked, the functions of voice and images are combined, the defects and hidden dangers found in the inspection process are registered in real time, and the current situation and the development trend of the hidden dangers of the system which are not processed are checked on site.
In the power distribution inspection process, an operator can automatically acquire equipment monitoring information through a mobile terminal, equipment information can be recorded through voice recognition and image recognition technologies, the distribution line and the equipment are fully covered by real object ID and RFID, the terminal is bound with the distribution line and the equipment inspection, the sub-health equipment is automatically positioned, and an auxiliary equipment owner conducts directional perception and actively operates and maintains.
In step S202, a device ID number of a field device is acquired based on the mobile terminal, and it is determined whether the device ID number is consistent with a preset ID number in the patrol work order.
In the embodiment, the detection task is received through the mobile terminal, the power distribution equipment live-line detection is carried out according to the patrol navigation route of the mobile terminal, the equipment ID number is scanned on site, whether the equipment ID number is consistent with the preset ID number in the patrol worksheet or not can be judged, and information such as an equipment account, a detection standard, a historical detection record and an equipment historical defect hidden danger record is obtained.
The method of this embodiment, through isolating device, link up information intranet and information extranet, convey intranet equipment basic data (including basic standing book, historical data of patrolling etc.) to cell-phone APP terminal, supply fortune dimension personnel on-the-spot relevant equipment standing book and historical information, and simultaneously, an external infrared camera on the cell-phone, be connected to the cell-phone through the data line, APP embeds infrared camera function, when the intranet system assigns the work order of patrolling, the operating personnel is according to the work order, fix a position field device through GPS, carry out the visible light to the scene and shoot, infrared temperature measurement is shot, and carry out automatic identification to heating defect, upload to the intranet system through cell-phone APP, save data, according to the result of patrolling, assign and overhaul task. The operation level of the distribution network line is greatly improved, the defect identification and processing capabilities of the line are improved, the hidden danger of the line is effectively reduced, and the power supply reliability of the line is finally improved. The method can provide data support for deep analysis of potential defect hazard identification of the distribution network line, provides convenience for tracking defect remediation conditions, and plays an important role in improving the power supply reliability of the distribution network line.
Please refer to fig. 3, which shows a block diagram of a distribution line infrared inspection system based on a mobile terminal according to the present application.
As shown in fig. 3, the infrared inspection system 300 for distribution lines includes a first determining module 310, a dividing module 320, a mapping module 330, a second determining module 340, and a generating module 350.
The first determining module 310 is configured to perform infrared temperature measurement on a field device according to the mobile terminal, so as to obtain a first highest temperature value of the field device and a three-phase device thermal image, and determine whether the first highest temperature value is greater than a preset temperature threshold value, where the three-phase device thermal image is an image of heat or temperature radiated by the three-phase device; a dividing module 320 configured to determine whether the first maximum temperature value is greater than a predetermined temperatureAnd performing an opening operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image, wherein an expression for performing the opening operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to open the operator, the operator is turned on,
in order to etch the operator, the etching process,
is the inflation operator; a mapping module 330 configured to convert the RGB pixel value matrix in the at least one single-phase device thermography into a grayscale image pixel value matrix and map the grayscale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, wherein an expression of the grayscale image pixel value matrix is calculated as:
in the formula (I), wherein,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values; calculating an expression of the temperature distribution matrix as follows:
in the formula (I), wherein,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
the temperature of the single-phase equipment is the heat or temperature radiated outwards by the single-phase equipment; a second determining module 340, configured to obtain a second highest temperature value and a lowest temperature value in the at least one single-phase device thermal image based on the temperature distribution matrix, and determine whether an inter-phase temperature maximum difference value is greater than a preset inter-phase threshold value, where the inter-phase temperature maximum difference value is a difference value between the second highest temperature value and the lowest temperature value; the generating module 350 is configured to judge the defect level of the field device according to a preset interphase threshold value to generate a first defect record if the maximum interphase temperature difference value is larger than the preset interphase threshold value, and issue an overhaul task according to the first defect record.
It should be understood that the modules depicted in fig. 3 correspond to various steps in the method described with reference to fig. 1. Thus, the operations and features described above for the method and the corresponding technical effects are also applicable to the modules in fig. 3, and are not described again here.
In still other embodiments, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program instructions, when executed by a processor, cause the processor to execute the mobile terminal-based distribution line infrared inspection method in any of the above-mentioned method embodiments;
as one embodiment, the computer-readable storage medium of the present invention stores computer-executable instructions configured to:
carrying out infrared temperature measurement on field equipment according to the mobile terminal, so as to obtain a first highest temperature value of the field equipment and a thermal image of the three-phase equipment, and judging whether the first highest temperature value is greater than a preset temperature threshold value or not;
if the first highest temperature value is not larger than a preset temperature threshold value, performing open operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image;
converting the RGB pixel value matrix in the at least one single-phase equipment thermal image into a gray level image pixel value matrix, and mapping the gray level image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval;
acquiring a second highest temperature value and a lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judging whether an interphase temperature maximum difference value is greater than a preset interphase threshold value, wherein the interphase temperature maximum difference value is the difference value between the second highest temperature value and the lowest temperature value;
and if the maximum difference value of the inter-phase temperatures is larger than a preset inter-phase threshold value, judging the defect grade of the field equipment according to the preset inter-phase threshold value to generate a first defect record, and issuing a maintenance task according to the first defect record.
The computer-readable storage medium may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the mobile terminal-based distribution line infrared inspection system, and the like. Further, the computer-readable storage medium may include high speed random access memory, and may also include memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the computer readable storage medium optionally includes memory remotely located from the processor, and the remote memory may be connected to the mobile terminal-based infrared inspection system for distribution lines over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 4, the electronic device includes: a processor 410 and memory 420. The electronic device may further include: an input device 430 and an output device 440. The processor 410, the memory 420, the input device 430, and the output device 440 may be connected by a bus or other means, such as the bus connection in fig. 4. The memory 420 is the computer-readable storage medium described above. The processor 410 executes various functional applications and data processing of the server by running the nonvolatile software program, instructions and modules stored in the memory 420, namely, the method for infrared inspection of power distribution lines based on the mobile terminal of the embodiment of the method is realized. The input device 430 may receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal-based distribution line infrared inspection system. The output device 440 may include a display device such as a display screen.
The electronic device can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
As an implementation mode, the electronic device is applied to a distribution line infrared inspection system based on a mobile terminal, and is used for a client, and the electronic device includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to:
carrying out infrared temperature measurement on field equipment according to the mobile terminal, so as to obtain a first highest temperature value of the field equipment and a thermal image of the three-phase equipment, and judging whether the first highest temperature value is greater than a preset temperature threshold value or not;
if the first highest temperature value is not larger than a preset temperature threshold value, performing open operation on the binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image;
converting the RGB pixel value matrix in the at least one single-phase equipment thermal image into a gray level image pixel value matrix, and mapping the gray level image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval;
acquiring a second highest temperature value and a lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judging whether an interphase temperature maximum difference value is greater than a preset interphase threshold value, wherein the interphase temperature maximum difference value is the difference value between the second highest temperature value and the lowest temperature value;
and if the maximum difference value of the inter-phase temperatures is larger than a preset inter-phase threshold value, judging the defect grade of the field equipment according to the preset inter-phase threshold value to generate a first defect record, and issuing a maintenance task according to the first defect record.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods of the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A distribution line infrared inspection method based on a mobile terminal is characterized by comprising the following steps:
carrying out infrared temperature measurement on the field equipment according to the mobile terminal, so as to obtain a first highest temperature value of the field equipment and a thermal image of the three-phase equipment, and judging whether the first highest temperature value is greater than a preset temperature threshold value or not, wherein the thermal image of the three-phase equipment is an image of heat or temperature radiated outwards by the three-phase equipment;
if the first highest temperature value is not larger than a preset temperature threshold value, performing open operation on a binary image of the three-phase equipment thermal image to extract and segment at least one single-phase equipment thermal image, wherein an expression for performing open operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to turn on the operator, the switch is turned on,
in order to etch the operator, the etching process,
is the inflation operator;
converting the RGB pixel value matrix in the at least one single-phase device thermal image into a gray scale image pixel value matrix, and mapping the gray scale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, wherein the expression for calculating the gray scale image pixel value matrix is as follows:
in the formula (I), the compound is shown in the specification,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values;
calculating an expression of the temperature distribution matrix as follows:
in the formula (I), the compound is shown in the specification,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
the temperature of the single-phase equipment is the heat or temperature radiated outwards by the single-phase equipment;
acquiring a second highest temperature value and a lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judging whether an interphase temperature maximum difference value is greater than a preset interphase threshold value, wherein the interphase temperature maximum difference value is the difference value between the second highest temperature value and the lowest temperature value;
and if the maximum difference value of the inter-phase temperatures is larger than a preset inter-phase threshold value, judging the defect grade of the field equipment according to the preset inter-phase threshold value to generate a first defect record, and issuing a maintenance task according to the first defect record.
2. The distribution line infrared inspection method based on the mobile terminal according to claim 1, wherein before infrared temperature measurement is performed on field equipment according to the mobile terminal so that a first highest temperature value and a three-phase equipment thermal image of the field equipment are obtained, the method further comprises the following steps:
acquiring a patrol work order issued by an intranet system according to the mobile terminal, and sending the patrol work order to the field equipment according to GIS geographic information in the patrol work order;
and acquiring the equipment ID number of the field equipment based on the mobile terminal, and judging whether the equipment ID number is consistent with the preset ID number in the patrol work order.
3. The distribution line infrared inspection method based on the mobile terminal according to claim 1, wherein before converting the RGB pixel value matrix in the at least one single-phase device thermography into a grayscale image pixel value matrix and mapping the grayscale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, the method further comprises:
if the first highest temperature value is larger than a preset temperature threshold value, judging the defect grade of the field device according to the preset temperature threshold value to generate a second defect record;
and carrying out open operation on the binary image of the three-phase equipment thermal image so as to extract and segment at least one single-phase equipment thermal image.
4. The distribution line infrared inspection method based on the mobile terminal according to claim 3, wherein after judging whether the maximum difference value of the phase-to-phase temperatures is larger than a preset phase-to-phase threshold value, the method further comprises the following steps:
and if the maximum difference value of the phase-to-phase temperatures is judged to be not greater than the preset phase-to-phase threshold value, issuing a maintenance task according to the second defect record.
5. The utility model provides an infrared system of patrolling and examining of distribution lines based on mobile terminal which characterized in that includes:
the first judgment module is configured to perform infrared temperature measurement on field equipment according to the mobile terminal, so that a first highest temperature value and a three-phase equipment thermal image of the field equipment are obtained, and whether the first highest temperature value is greater than a preset temperature threshold value is judged, wherein the three-phase equipment thermal image is heat or a temperature image radiated outwards by the three-phase equipment;
the segmentation module is configured to perform an opening operation on the binary image of the three-phase device thermal image if the first highest temperature value is not greater than a preset temperature threshold value, so that at least one single-phase device thermal image is extracted and segmented, wherein an expression for performing the opening operation on the binary image is as follows:
wherein A is a graphic object, D is a structural element with the size of one pixel,
in order to turn on the operator, the switch is turned on,
in order to etch the operator, the etching process,
is the inflation operator;
a mapping module configured to convert an RGB pixel value matrix in the at least one single-phase device thermography into a grayscale image pixel value matrix and map the grayscale image pixel value matrix into a temperature distribution matrix based on a preset image temperature interval, wherein an expression of the grayscale image pixel value matrix is calculated as:
in the formula (I), the compound is shown in the specification,
r, G, B represent red, green, and blue, respectively, for grayscale image pixel values;
calculating an expression of the temperature distribution matrix as follows:
in the formula (I), the compound is shown in the specification,
is the lowest temperature of the image temperature,
is the highest temperature of the image temperature,
the temperature of the single-phase equipment is the heat or temperature radiated outwards by the single-phase equipment;
the second judging module is configured to acquire a second highest temperature value and a second lowest temperature value in the at least one single-phase equipment thermal image based on the temperature distribution matrix, and judge whether an inter-phase temperature maximum difference value is greater than a preset inter-phase threshold value, wherein the inter-phase temperature maximum difference value is a difference value between the second highest temperature value and the second lowest temperature value;
and the generating module is configured to judge the defect grade of the field equipment according to the preset interphase threshold value to generate a first defect record if the maximum interphase temperature difference value is larger than the preset interphase threshold value, and issue an overhaul task according to the first defect record.
6. An electronic device, comprising: at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any of claims 1 to 4.
7. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1 to 4.
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