Visual monitoring system for insulator working status

Abstract

The present invention relates to a visual monitoring system for the working state of an insulator, comprising: a discharge detection device for sensing an audio signal near an insulator porcelain part, and sending a discharge abnormality signal when there is an audio component in the audio signal whose frequency is not within a reference discharge frequency interval corresponding to the insulator porcelain part and the amplitude of the audio component exceeds a limit; and an intelligent analysis device for intelligently identifying whether there are spots on the porcelain glaze corresponding to the insulator porcelain part based on various visual data. The visual monitoring system for the working state of an insulator of the present invention has compact logic and wide application. Since the intelligent visual monitoring process of whether there are spots on the surface of the insulator porcelain glaze is triggered only when an abnormal discharge sound is detected in the power transmission line environment where the insulator is located, the analysis accuracy at the pixel level improves the reliability and stability of the visual monitoring results, thereby avoiding wasting a large amount of system power consumption, while improving the recognition effect of the working state of the insulator.

Description

Technical Field

[0001] The invention relates to the field of power transmission equipment management, and in particular to a visual monitoring system for the working state of an insulator. Background Art

[0002] Insulators are devices installed between conductors of different potentials or between conductors and grounded components, and are able to withstand voltage and mechanical stress. Insulators are of various types and shapes. Although the structures and appearances of different types of insulators are quite different, they are all composed of two major parts: insulating parts and connecting fittings.

[0003] Insulators are a special type of insulating control that can play an important role in overhead transmission lines. In the early years, insulators were mostly used on utility poles. Gradually, they developed into high-voltage power lines. Many disc-shaped insulators were hung on one end of the tower to increase the creepage distance. They are usually made of glass or ceramics and are called insulators. Insulators should not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions, otherwise the insulators will not play a significant role and will damage the use and operating life of the entire line.

[0004] When spots appear on the porcelain glaze surface of the insulator, it will affect the normal working state of the insulator, and then cause abnormal discharge sound in the transmission line where the insulator is located. It can be seen that a linkage analysis mechanism from abnormal discharge sound to insulator porcelain glaze surface detection is needed to conduct on-site analysis of the working state of the insulator, thereby reducing system power consumption while ensuring the analysis effect of the insulator working state. Obviously, the existing technology lacks a corresponding intelligent monitoring mechanism. Summary of the invention

[0005] In order to solve the technical problems in the prior art, the present invention provides a visual monitoring system for the working status of an insulator, which can trigger intelligent visual monitoring processing of whether there are spots on the surface of the insulator glaze only when abnormal discharge sound is detected in the transmission line environment where the insulator is located. The analysis accuracy at the pixel level improves the reliability and stability of the visual monitoring results, thereby improving the recognition effect of the working status of the insulator while avoiding wasting a large amount of system power consumption.

[0006] According to the present invention, a visual monitoring system for the working state of an insulator is provided, the system comprising:

[0007] A discharge detection device is arranged near the insulator porcelain part as a monitored object, and is used to sense the audio signal near the insulator porcelain part, and send out a discharge abnormality signal when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain part and the amplitude of the audio component exceeds the limit;

[0008] A dynamic monitoring device, connected to the discharge detection device, is used to perform visual monitoring processing on the environment where the enamel surface of the insulator porcelain part is located when receiving the discharge abnormality signal, so as to obtain and output a corresponding surface environment image;

[0009] A signal enhancement device, connected to the dynamic monitoring device, for performing a histogram equalization process based on a distribution function on the received surface environment map image to obtain and output a corresponding current enhanced image;

[0010] A clarity processing device, connected to the signal enhancement device, for performing geometric mean filtering on the received current enhanced image to obtain and output a corresponding clarity processed image;

[0011] A real-time filtering device, connected to the sharpening processing device, for performing adaptive recursive filtering on the received sharpening processed image to obtain and output a corresponding recursive filtered image;

[0012] an intelligent analysis device connected to the real-time filtering device, and used for receiving the recursive filtering image, identifying the image area occupied by the insulator porcelain in the recursive filtering image based on the reference shape pattern corresponding to the insulator porcelain, identifying the pixel points in the image area occupied by the insulator porcelain that match the grayscale value range of the glaze corresponding to the insulator porcelain based on the grayscale value range of the glaze corresponding to the insulator porcelain, and identifying the pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain, and when the ratio of the number of pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain exceeds or equals the set ratio limit to the total number of pixel points in the image area occupied by the insulator porcelain, a spot identification signal is issued, otherwise, a spot non-identification signal is issued;

[0013] The discharge detection device is further used to send a discharge normal signal when there is no audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component.

[0014] Therefore, the present invention has the following outstanding technical effects:

[0015] Technical effect A: Based on the reference shape pattern corresponding to the insulator porcelain part, the image area occupied by the insulator porcelain part in the recursive filtering image obtained after the targeted optimization processing of the imaging image of the environment where the porcelain glaze surface of the insulator porcelain part is located is identified; based on the grayscale value range of the porcelain glaze corresponding to the insulator porcelain part, the pixel points that match the grayscale value range of the porcelain glaze corresponding to the insulator porcelain part in the image area occupied by the insulator porcelain part are identified, and the pixel points that do not match the grayscale value range of the porcelain glaze corresponding to the insulator porcelain part in the image area occupied by the insulator porcelain part are identified, thereby providing reliable information for the detection of spot existence on the porcelain glaze surface of the insulator porcelain part;

[0016] Technical effect B: When the ratio of the number of pixels that do not match the grayscale value range of the corresponding glaze of the insulator porcelain in the occupied image area of ​​the insulator porcelain to the total number of pixels in the occupied image area of ​​the insulator porcelain exceeds or equals to the set ratio limit, a spot identification signal is issued, otherwise, a spot non-identification signal is issued, thereby completing the intelligent detection of the existence of spots on the glaze surface of the insulator porcelain;

[0017] Technical effect C: Only when there is an audio component in the audio signal near the insulator porcelain part whose frequency is not within the reference discharge frequency range corresponding to the insulator porcelain part and the amplitude of the audio component exceeds the limit, the visual monitoring processing of the environment where the glaze surface of the insulator porcelain part is located is triggered, thereby reducing the operating power consumption of the entire detection system.

[0018] The visual monitoring system for the working state of the insulator of the present invention has compact logic and wide application. Since the intelligent visual monitoring process of whether there are spots on the surface of the insulator enamel is triggered only when the abnormal discharge sound is detected in the transmission line environment where the insulator is located, the analysis accuracy at the pixel level improves the reliability and stability of the visual monitoring results, thereby avoiding the waste of a large amount of system power consumption and improving the recognition effect of the working state of the insulator. DETAILED DESCRIPTION

[0019] The following is a detailed description of an embodiment of the visual monitoring system for the working status of an insulator of the present invention.

[0020] Embodiment 1

[0021] According to the visual monitoring system of the working state of an insulator shown in the first embodiment of the present invention, the system includes:

[0022] A discharge detection device is arranged near the insulator porcelain part as a monitored object, and is used to sense the audio signal near the insulator porcelain part, and send out a discharge abnormality signal when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain part and the amplitude of the audio component exceeds the limit;

[0023] For example, the discharge detection device includes a signal sensing unit, a frequency analysis unit, and an amplitude judgment unit, which are used to collaboratively sense an audio signal near the insulator porcelain component, and when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component and the amplitude of the audio component exceeds the limit, an operation of sending a discharge abnormality signal;

[0024] Specifically, in the discharge detection device, the signal sensing unit, the frequency analysis unit and the amplitude determination unit are connected in sequence;

[0025] A dynamic monitoring device, connected to the discharge detection device, is used to perform visual monitoring processing on the environment where the enamel surface of the insulator porcelain part is located when receiving the discharge abnormality signal, so as to obtain and output a corresponding surface environment image;

[0026] A signal enhancement device, connected to the dynamic monitoring device, for performing a histogram equalization process based on a distribution function on the received surface environment map image to obtain and output a corresponding current enhanced image;

[0027] A clarity processing device, connected to the signal enhancement device, for performing geometric mean filtering on the received current enhanced image to obtain and output a corresponding clarity processed image;

[0028] A real-time filtering device, connected to the sharpening processing device, for performing adaptive recursive filtering on the received sharpening processed image to obtain and output a corresponding recursive filtered image;

[0029] an intelligent analysis device connected to the real-time filtering device, and used for receiving the recursive filtering image, identifying the image area occupied by the insulator porcelain in the recursive filtering image based on the reference shape pattern corresponding to the insulator porcelain, identifying the pixel points in the image area occupied by the insulator porcelain that match the grayscale value range of the glaze corresponding to the insulator porcelain based on the grayscale value range of the glaze corresponding to the insulator porcelain, and identifying the pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain, and when the ratio of the number of pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain exceeds or equals the set ratio limit to the total number of pixel points in the image area occupied by the insulator porcelain, a spot identification signal is issued, otherwise, a spot non-identification signal is issued;

[0030] Wherein, the discharge detection device is further used to send a discharge normal signal when there is no audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component;

[0031] Wherein, the discharge detection device is further used to send a discharge normal signal when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component and the amplitude of the audio component does not exceed the limit;

[0032] Wherein, the dynamic monitoring device is also used to stop executing the visual monitoring process of the environment where the glaze surface of the insulator porcelain part is located when receiving the normal discharge signal.

[0033] Embodiment 2

[0034] A visual monitoring system for the working status of an insulator is shown in the second embodiment of the present invention.

[0035] Compared with the first embodiment, the visual monitoring system for the working state of the insulator in the second embodiment may further include:

[0036] A frequency division communication mechanism is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively;

[0037] Among them, the frequency division communication mechanism is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is respectively connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device, including: the frequency division communication mechanism is used to respectively implement parameter configuration services for the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device based on the frequency division communication link.

[0038] Embodiment 3

[0039] A visual monitoring system for the working status of an insulator is shown in the third embodiment of the present invention.

[0040] Compared with the first embodiment, the visual monitoring system for the working state of the insulator in the third embodiment may further include:

[0041] A surface detection device is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively;

[0042] Among them, the surface detection device is arranged near the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device and is respectively connected to the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device, including: the surface detection device is used to detect the surface material uniformity level of the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device based on the visual detection mechanism.

[0043] Next, the specific structure of the visual monitoring system for the working state of the insulator of the present invention will be further described.

[0044] In the visual monitoring system for the working state of an insulator according to various embodiments of the present invention:

[0045] A content enhancement component is used to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

[0046] In the visual monitoring system for the working state of an insulator according to various embodiments of the present invention:

[0047] The content enhancement component is used to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively, including: performing bilateral filtering blur on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

[0048] In the visual monitoring system for the working state of an insulator according to various embodiments of the present invention:

[0049] Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing USM filter sharpening on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

[0050] In the visual monitoring system for the working state of an insulator according to various embodiments of the present invention:

[0051] Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing high-pass filtering and sharpening on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

[0052] And in the visual monitoring system of the insulator working state according to various embodiments of the present invention:

[0053] Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing distortion correction processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

[0054] In addition, in the visual monitoring system of the working status of the insulator, an audio signal near the insulator porcelain is sensed, and when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain and the amplitude of the audio component exceeds the limit, a discharge abnormality signal is issued, including: sensing the audio signal near the insulator porcelain, and when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain and the amplitude of the audio component exceeds the set amplitude limit, a discharge abnormality signal is issued.

[0055] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications, equivalent structures and functions.

Claims

1. A visual monitoring system for the working status of an insulator, characterized in that: The system comprises: A discharge detection device is arranged near the insulator porcelain part as a monitored object, and is used to sense the audio signal near the insulator porcelain part, and send out a discharge abnormality signal when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain part and the amplitude of the audio component exceeds the limit; A dynamic monitoring device, connected to the discharge detection device, is used to perform visual monitoring processing on the environment where the enamel surface of the insulator porcelain part is located when receiving the discharge abnormality signal, so as to obtain and output a corresponding surface environment image; A signal enhancement device, connected to the dynamic monitoring device, for performing a histogram equalization process based on a distribution function on the received surface environment image to obtain and output a corresponding current enhanced image; A clarity processing device, connected to the signal enhancement device, for performing geometric mean filtering on the received current enhanced image to obtain and output a corresponding clarity processed image; A real-time filtering device, connected to the sharpening processing device, for performing adaptive recursive filtering on the received sharpening processed image to obtain and output a corresponding recursive filtered image; an intelligent analysis device connected to the real-time filtering device, and used for receiving the recursive filtering image, identifying the image area occupied by the insulator porcelain in the recursive filtering image based on the reference shape pattern corresponding to the insulator porcelain, identifying the pixel points in the image area occupied by the insulator porcelain that match the grayscale value range of the glaze corresponding to the insulator porcelain based on the grayscale value range of the glaze corresponding to the insulator porcelain, and identifying the pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain, and when the ratio of the number of pixel points in the image area occupied by the insulator porcelain that do not match the grayscale value range of the glaze corresponding to the insulator porcelain exceeds or equals the set ratio limit to the total number of pixel points in the image area occupied by the insulator porcelain, a spot identification signal is issued, otherwise, a spot non-identification signal is issued; The discharge detection device is further used to send a discharge normal signal when there is no audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component.

2. The visual monitoring system for the working status of an insulator according to claim 1, characterized in that: The discharge detection device is also used to send a discharge normal signal when there is an audio component in the audio signal whose frequency is not within the reference discharge frequency interval corresponding to the insulator porcelain component and the amplitude of the audio component does not exceed the limit; Wherein, the dynamic monitoring device is also used to stop executing the visual monitoring process of the environment where the glaze surface of the insulator porcelain part is located when receiving the normal discharge signal.

3. The visual monitoring system for the working status of an insulator according to claim 2, characterized in that: The system further comprises: A frequency division communication mechanism is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively; Among them, the frequency division communication mechanism is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is respectively connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device, including: the frequency division communication mechanism is used to respectively implement parameter configuration services for the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device based on the frequency division communication link.

4. The visual monitoring system for the working status of an insulator according to claim 2, characterized in that: The system further comprises: A surface detection device is arranged near the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device and is connected to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively; Among them, the surface detection device is arranged near the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device and is respectively connected to the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device, including: the surface detection device is used to detect the surface material uniformity level of the intelligent analysis device, the signal enhancement device, the clarification processing device and the real-time filtering device based on the visual detection mechanism.

5. The visual monitoring system for the working status of an insulator according to any one of claims 2 to 4, characterized in that: A content enhancement component is used to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

6. The visual monitoring system for the working status of an insulator according to claim 5, characterized in that: The content enhancement component is used to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively, including: performing bilateral filtering blur on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

7. The visual monitoring system for the working status of an insulator according to claim 5, characterized in that: Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing USM filter sharpening on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

8. The visual monitoring system for the working status of an insulator according to claim 5, characterized in that: Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing high-pass filtering and sharpening on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.

9. The visual monitoring system for the working status of an insulator according to claim 5, characterized in that: Using a content enhancement component to perform image data processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively includes: performing distortion correction processing on the output data of the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device to obtain the output processing data corresponding to the intelligent analysis device, the signal enhancement device, the clarity processing device and the real-time filtering device respectively.