阅读说明：本技术 一种绝缘材料表面的藻类检测方法、装置和设备 (Method, device and equipment for detecting algae on surface of insulating material ) 是由 张福增 王婷婷 徐永生 陈少杰 廖一帆 肖微 覃歆然 王希林 贾志东 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种绝缘材料表面藻类的检测方法,包括：以预设的功率密度的激光脉冲作用于实测绝缘材料上,采集所述实测绝缘材料的光谱数据；将所述实测绝缘材料的光谱数据通过预设的标准光谱数据库进行对比,判断所述实测绝缘材料表面是否覆盖藻类；当所述实测绝缘材料表面覆盖藻类时,分析所述实测绝缘材料表面的藻类的种类和密度。本发明还公开了一种绝缘材料表面藻类的检测装置和设备,通过获取实测绝缘材料的光谱数据,快速精准地检测所述实测绝缘材料覆盖藻类的种类和密度,为维护电力设备的安全稳定提供基础。(The invention discloses a detection method of algae on the surface of an insulating material, which comprises the following steps: acting laser pulses with preset power density on an actually measured insulating material, and collecting spectral data of the actually measured insulating material; comparing the spectral data of the actually measured insulating material through a preset standard spectral database, and judging whether the surface of the actually measured insulating material is covered with algae or not; and when the measured insulating material surface is covered with algae, analyzing the species and the density of the algae on the measured insulating material surface. The invention also discloses a device and equipment for detecting the algae on the surface of the insulating material, which can quickly and accurately detect the type and density of the algae covered by the actually measured insulating material by acquiring the spectral data of the actually measured insulating material, and provide a foundation for maintaining the safety and stability of the power equipment.)

1. A method for detecting algae on the surface of an insulating material is characterized by comprising the following steps:

acting laser pulses with preset power density on an actually measured insulating material, and collecting spectral data of the actually measured insulating material;

comparing the spectral data of the actually measured insulating material through a preset standard spectral database, and judging whether the surface of the actually measured insulating material is covered with algae or not;

and when the measured insulating material surface is covered with algae, analyzing the species and the density of the algae on the measured insulating material surface.

2. The method for detecting algae on the surface of the insulating material according to claim 1, wherein the step of establishing the standard spectrum database comprises the steps of:

obtaining an uncovered algae insulating material and a plurality of covered algae insulating materials; wherein the species and density of algae covered on the surface of each algae-covered insulating material are known and are different from each other;

acting the laser pulse with the preset power density on each insulating material, and collecting the spectral data of each insulating material;

and training the spectral data of each insulating material to obtain the standard spectral database.

3. The method according to claim 2, wherein the training of the spectral data of each of the insulating materials to obtain the standard spectral database comprises:

determining characteristic element spectral line data corresponding to each of the covered algae insulation materials based on a NIST database; the characteristic element spectral line data comprise characteristic element types, spectral line intensities of characteristic elements and spectral line intensity ratios of different characteristic elements;

and importing the corresponding relation between each characteristic element spectral line data and the corresponding algae species and density of the covered algae insulating material into a preset fitting model for fitting so as to train and obtain the standard spectral database.

4. The method according to claim 3, wherein the determining the characteristic element spectral line data corresponding to each of the covered algae insulation materials based on the NIST database specifically comprises:

comparing the spectral data of each of the covered algae insulation materials with the spectral data of the uncovered algae insulation material for the same class of insulation material to determine peaks in the spectral data of the covered algae insulation material;

matching the peaks in the spectral data with the elemental spectral line information in the NIST database to determine characteristic elemental spectral line data corresponding to each of the coated algae insulation.

5. The method of claim 3, wherein the predetermined fitting model includes but is not limited to a univariate fitting model, a multivariate fitting model, and a random forest fitting model.

6. The method according to claim 1, wherein the step of collecting the spectral data of the measured insulation material by applying the laser pulse with the predetermined power density to the measured insulation material comprises:

acquiring a region with a preset shape and a preset size on the surface of the actually measured insulating material as an action region of laser pulse;

bombarding a plurality of uniformly distributed action points in the action area by using the laser pulse with the preset power density to obtain original spectrum data of the actually measured insulating material;

and preprocessing the original spectrum data, and removing the interference of background spectrum data to obtain the spectrum data of the actually measured insulating material.

7. The device for detecting the algae on the surface of the insulating material is characterized by comprising an acquisition module, an analysis module and an output module;

the acquisition module is used for acting on the actually measured insulating material by using a laser pulse with preset power density to acquire spectral data of the actually measured insulating material;

the judging module is used for comparing the spectral data of the actually measured insulating material through a preset standard spectral database and judging whether the surface of the actually measured insulating material is covered with algae or not;

the analysis module is used for analyzing the species and the density of algae on the surface of the actually measured insulating material when the covered algae of the actually measured insulating material.

8. An apparatus for detecting algae on the surface of an insulating material, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the method for detecting algae on the surface of an insulating material according to any one of claims 1 to 6.

Technical Field

The invention relates to the field of spectral analysis methods, in particular to a method, a device and equipment for detecting algae on the surface of an insulating material.

Background

In the transmission line, the insulator plays the dual role of mechanical connection and electrical insulation between a wire and an iron tower. In practical application, the insulator is influenced by emissions of factories, traffic, agriculture, mines, life and the like, natural dust falls off and the like during operation, and thus, the surface of the insulator gradually accumulates fouling substances. Especially in forests and mountains in warm and humid areas, microbial spores float in the atmosphere, and when the environment is proper, the spores are easy to breed on the surface of the insulator and gradually become large-area algae, moss or lichen. Microorganisms such as algae grow on the surface of the composite insulating material serving as power transmission and transformation equipment, and influence the electrical property, mechanical property, hydrophobic property and physical and chemical properties of the composite insulating material, so that the electrical system is threatened to operate stably, safely and reliably. In a humid environment, pollution flashover discharge of insulator materials can occur, so that pollution flashover accidents occur, and huge losses are brought to economic development and life of people.

In the prior art, parameters of algae coverage area proportion and unit area growth thickness are represented by using a visual inspection method or an image shooting analysis method, or the detection of algae species and density is realized by using a traditional detection method such as an equivalent salt deposit density method, a leakage current method and the like. However, in the process of implementing the invention, the inventor finds that the prior art has at least the following problems: because the pollution condition on the surface of the insulator is complex, certain errors may exist in the image shooting analysis method for judging the pollution components through the pollution colors; the traditional detection method has the defects of long detection period, manpower and material resource consumption and the like. Therefore, a technical method capable of directly identifying the algae type on the surface of the insulator and representing the accurate distribution of the algae type is urgently needed.

Disclosure of Invention

The embodiment of the invention aims to provide a method, a device and equipment for detecting algae on the surface of an insulating material, which can quickly and accurately detect the type and density of algae covered by an actually measured insulating material by acquiring spectral data of the actually measured insulating material, and provide a basis for maintaining the safety and stability of power equipment.

In order to achieve the above object, an embodiment of the present invention provides a method for detecting algae on the surface of an insulating material, including:

acting laser pulses with preset power density on an actually measured insulating material, and collecting spectral data of the actually measured insulating material;

comparing the spectral data of the actually measured insulating material through a preset standard spectral database, and judging whether the surface of the actually measured insulating material is covered with algae or not;

and when the measured insulating material surface is covered with algae, analyzing the species and the density of the algae on the measured insulating material surface.

As an improvement of the above scheme, the step of establishing the standard spectrum database comprises the following steps:

obtaining an uncovered algae insulating material and a plurality of covered algae insulating materials; wherein the species and density of algae covered on the surface of each algae-covered insulating material are known and are different from each other;

acting the laser pulse with the preset power density on each insulating material, and collecting the spectral data of each insulating material;

and training the spectral data of each insulating material to obtain the standard spectral database.

As an improvement of the above solution, the training of the spectrum data of each of the insulating materials to obtain the standard spectrum database includes:

determining characteristic element spectral line data corresponding to each of the covered algae insulation materials based on a NIST database;

importing the corresponding relation between each characteristic element spectral line data and the corresponding algae species and density of the covered algae insulating material into a preset fitting model for fitting so as to obtain the standard spectral database through training; the characteristic element spectral line data comprise characteristic element types, spectral line intensities of characteristic elements and spectral line intensity ratios of different characteristic elements.

As an improvement of the above solution, the determining the characteristic element spectral line data corresponding to each of the covered algae insulating materials based on the NIST database specifically includes:

comparing the spectral data of each of the covered algae insulation materials with the spectral data of the uncovered algae insulation material for the same class of insulation material to determine peaks in the spectral data of the covered algae insulation material;

matching the peaks in the spectral data with the elemental spectral line information in the NIST database to determine characteristic elemental spectral line data corresponding to each of the coated algae insulation.

As an improvement of the above scheme, the preset fitting model includes, but is not limited to, a univariate fitting model, a multivariate fitting model, and a random forest fitting model.

As an improvement of the above scheme, the method for collecting the spectrum data of the actually measured insulating material by applying the laser pulse with the preset power density to the actually measured insulating material specifically includes:

acquiring a region with a preset shape and a preset size on the surface of the actually measured insulating material as an action region of laser pulse;

bombarding a plurality of uniformly distributed action points in the action area by using the laser pulse with the preset power density to obtain original spectrum data of the actually measured insulating material;

and preprocessing the original spectrum data, and removing the interference of background spectrum data to obtain the spectrum data of the actually measured insulating material.

The embodiment of the invention also provides a detection device for the algae on the surface of the insulating material, which comprises an acquisition module, a judgment module and an analysis module;

the acquisition module is used for acting on the actually measured insulating material by using a laser pulse with preset power density to acquire spectral data of the actually measured insulating material;

the judging module is used for comparing the spectral data of the actually measured insulating material through a preset standard spectral database and judging whether the surface of the actually measured insulating material is covered with algae or not;

the analysis module is used for analyzing the species and the density of algae on the surface of the actually measured insulating material when the covered algae of the actually measured insulating material.

The embodiment of the invention also provides equipment for detecting the algae on the surface of the insulating material, which is characterized by comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to realize the method for detecting the algae on the surface of the insulating material.

Compared with the prior art, the method, the device and the equipment for detecting the algae on the surface of the insulating material disclosed by the invention have the advantages that the spectral data of the actually measured insulating material surface is obtained through the laser-induced breakdown spectroscopy technology and is analyzed through the preset standard spectral database, so that whether the actually measured insulating material surface is covered with the algae or not is judged, and the type and the density of the covered algae are obtained. The analysis efficiency of the condition that the insulating material covers the algae can be improved, the type and the density of the actually measured insulating material covering the algae can be detected quickly and accurately, and a foundation is provided for maintaining the safety and the stability of the power equipment.

Drawings

FIG. 1 is a schematic flow chart of a method for detecting algae on the surface of an insulating material according to an embodiment of the present invention;

FIG. 2 is a schematic flowchart illustrating steps of establishing a standard spectrum database in a method for detecting algae on the surface of an insulating material according to an embodiment of the present invention;

FIGS. 3(a) and 3(b) are graphs of spectral data of covered algae silicone rubber and uncovered algae silicone rubber at different wavelengths in a method for detecting algae on the surface of an insulating material according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an apparatus for detecting algae on the surface of an insulating material according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of an apparatus for detecting algae on the surface of an insulating material according to a third embodiment of the present invention.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.