An infrared thermal imager

Abstract

The present invention relates to the technical field of infrared measuring instruments, and in particular to an infrared thermal imager. The present invention integrates a compensator on the infrared thermal imager body, and uses the compensator to perform data compensation on the collected initial infrared image of the electric power equipment, thereby eliminating errors. When performing data compensation, the compensator takes into account that the temperature of the electric power equipment will show an obvious correlation with the load, analyzes the correlation between the voltage and the infrared intensity chaos, and obtains the authenticity of the infrared measurement. Further considering the temperature distribution in the operating environment of the electric power equipment, the impact of the environment on the measurement can be intuitively presented, so the environmental impact weight is obtained, and then the compensation weight is obtained to compensate for the infrared intensity data in the initial infrared image. The present invention compensates for the infrared data through the compensator, so that the infrared thermal imager can output more accurate infrared measurement results of the electric power equipment.

Description

Technical Field

[0001] The invention relates to the technical field of infrared measuring instruments, and in particular to an infrared thermal imager. Background Art

[0002] An infrared thermal imager is an instrument that uses the principle of infrared radiation to detect the temperature distribution on the surface of an object. Objects emit infrared radiation of different wavelengths at different temperatures. The infrared thermal imager receives the radiation through a special detector and converts it into a visual image. The brief working principle is: the infrared radiation emitted by the target object is received through its built-in infrared detector, and then the received infrared radiation signal is converted into an electrical signal. The electrical signal is processed to generate a temperature distribution map, that is, an infrared light intensity distribution map; the final generated thermal map can be presented on the display screen, and users can use different colors to represent different temperature ranges, so as to intuitively analyze and judge the temperature state of the object.

[0003] In the power equipment scenario, when using an infrared thermal imager to detect the temperature of the power equipment, the characteristics of the surface material of the power equipment, the current and the environment will reduce the accuracy of the infrared intensity measurement results and cause measurement errors. If the initial infrared image collected is directly used as the final measurement result, the measurement data will be inaccurate. Summary of the invention

[0004] In order to solve the technical problem that the infrared thermal imager in the prior art has inaccurate measurement results due to the influence of the use scenario in the infrared measurement scenario of power equipment, the purpose of the present invention is to provide an infrared thermal imager, and the technical solution adopted is as follows:

[0005] The present invention proposes an infrared thermal imager, comprising an infrared thermal imager body, wherein the infrared thermal imager body is connected to a compensator by signals; the compensator is used to perform data compensation on an initial infrared image collected by the infrared thermal imager body on an electric device, and then display the image on the infrared thermal imager body;

[0006] The method for compensating infrared data by the compensator includes:

[0007] Obtain different heating areas of the electric equipment in the initial infrared image; obtain the infrared intensity disorder of the initial infrared image according to the infrared light intensity difference between the heating areas; obtain the heating trend characteristics of the electric equipment according to the infrared intensity disorder change trend of multiple consecutive frames of initial infrared images;

[0008] Acquire the voltage signal of the power equipment; obtain the infrared measurement authenticity of the power equipment according to the difference between the voltage change trend of the voltage signal and the heating trend characteristics in the same time series range, and the data correlation between the voltage signal and the infrared intensity chaos degree;

[0009] Obtaining a temperature change trend of the environment in which the electric equipment is located, and obtaining an environmental impact weight according to the temperature change trend and the infrared intensity of the environmental area in the initial infrared image;

[0010] A compensation weight is obtained according to the infrared measurement authenticity and the environmental impact weight, and the infrared intensity data in the initial infrared image is compensated.

[0011] Furthermore, the method for the compensator to obtain different heating areas of the electric equipment in the initial infrared image includes:

[0012] Extract edge information from the initial infrared image, match the edge information according to a preset electric instrument outline template to obtain the electric instrument area in the initial infrared image; perform threshold segmentation on the electric instrument area in the initial infrared image to obtain different heating areas.

[0013] Furthermore, the method for the compensator to obtain the infrared intensity chaos degree includes:

[0014] The difference in average infrared light intensity between two different heating areas is obtained, and all the differences in average infrared light intensity are averaged to obtain the infrared intensity disorder degree.

[0015] Furthermore, the method for the compensator to obtain the heating trend characteristics of the electric equipment includes:

[0016] The infrared intensity chaos of multiple frames of initial infrared images are arranged into an infrared intensity chaos sequence in a time sequence; and the heating trend feature is obtained according to the variance and linear variation degree of the infrared intensity chaos sequence.

[0017] Furthermore, the method for the compensator to obtain the data correlation includes:

[0018] A voltage data sequence formed by the voltage signal is obtained; after normalizing the voltage data sequence and the infrared intensity chaos degree sequence within the corresponding time series range, the mean square error between the two sequences is calculated, and the mean square error is negatively correlated and normalized to obtain the data correlation.

[0019] Furthermore, the method for the compensator to obtain the voltage variation trend includes:

[0020] The voltage variation trend is obtained according to the variance and linear variation degree of the voltage data sequence.

[0021] Furthermore, the method for the compensator to obtain the authenticity of the infrared measurement of the electric power equipment includes:

[0022] The difference between the voltage change trend and the heating trend feature is negatively correlated and normalized to obtain trend-related features; the trend-related features are multiplied by the data correlation to obtain the infrared measurement authenticity.

[0023] Furthermore, the method for the compensator to obtain the temperature change trend of the environment in which the power equipment is located includes:

[0024] Acquire a monitoring temperature sequence of the environment where the power equipment is located; obtain a differential sequence of the monitoring temperature sequence; obtain a data difference between two adjacent elements in the differential sequence, and use an average value of the data difference as the temperature change trend.

[0025] Furthermore, the method for obtaining the environmental impact weight of the compensator includes:

[0026] The average infrared intensity of the environmental area in the continuous multiple frames of initial infrared images is obtained, and the product of the average infrared intensity and the temperature change trend is used as the environmental impact weight.

[0027] Furthermore, the method in which the compensator obtains the compensation weight and compensates the infrared intensity data in the initial infrared image includes:

[0028] The infrared measurement authenticity is negatively correlated to obtain the degree of measurement error; the measurement error degree and the Euclidean norm of the environmental impact weight are normalized and added to the positive integer 1 to obtain the compensation weight; the compensation weight is multiplied by the infrared intensity data of each pixel position in the initial infrared image to obtain a compensated infrared image.

[0029] The present invention has the following beneficial effects:

[0030] The present invention integrates a compensator on the infrared thermal imager body, and the compensator is used to perform data compensation on the collected initial infrared image of the power equipment, thereby eliminating errors. When performing data compensation, the compensator takes into account that the temperature of the power equipment will show an obvious correlation with the load, that is, as the load changes, the power equipment will also show corresponding changes. Therefore, the present invention analyzes the correlation between voltage and infrared intensity confusion to obtain the authenticity of infrared measurement. Further considering the temperature distribution in the operating environment of the power equipment, the impact of the environment on the measurement can be intuitively presented, so the environmental impact weight is obtained, and then the compensation weight is obtained to compensate the infrared intensity data in the initial infrared image, so that the infrared thermal imager can output more accurate infrared measurement results of the power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the working principle of an infrared thermal imager provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a compensator working process provided by an embodiment of the present invention;

[0034] Figure 3 A flow chart of a method for compensating infrared data by a compensator provided by one embodiment of the present invention;

[0035] Figure 4 A schematic diagram of an initial infrared image provided by an embodiment of the present invention;

[0036] Figure 5 An edge image of an initial infrared image provided by an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of an electric power instrument area provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of a voltage signal provided by an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of an ambient temperature monitoring signal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation, structure, features and effects of an infrared thermal imager proposed according to the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0041] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0042] An infrared thermal imager proposed in an embodiment of the present invention includes an infrared thermal imager body. The infrared thermal imager body has the components and functions of a conventional infrared thermal imager. The specific technical means are well known to those skilled in the art and will not be described in detail here. The infrared thermal imager body of the embodiment of the present invention is also connected to the compensator for signal transmission, that is, the infrared thermal imager body and the compensator can transmit data signals to each other. The compensator is used to perform data compensation on the initial infrared image collected by the infrared thermal imager body on the power equipment, and then display it on the infrared thermal imager body. Please refer to Figure 1 , which shows a schematic diagram of the working principle of an infrared thermal imager provided by an embodiment of the present invention, such as Figure 1 As shown, the infrared thermal imager maps the information of the instantaneous field of view in the total field of view to the horizontal scanner through the optical system. The horizontal scanner further maps the information to the vertical scanner. Finally, the data is collected by the detector, compensated by the compensator, and optimized by the amplifier for visualization on the display.

[0043] It should be noted that, in the embodiment of the present invention, the infrared thermal imager body can also adjust a series of parameters. The emissivity, reflection temperature, ambient temperature, distance, humidity and other parameters can be adjusted through the operation interface. These parameters can be set in the setting interface of the infrared thermal imager, and then the infrared thermal imager with the set parameters can be used to measure the target object.

[0044] The compensator can eliminate the measurement errors in the initial infrared image caused by the environmental factors of the power equipment. Figure 2 , which shows a schematic diagram of a compensator workflow provided by an embodiment of the present invention. Because the compensator and the infrared thermal imager body are connected by signals, the infrared data collected by the infrared thermal imager body is transmitted in the compensator after digital-to-electrical conversion. In the compensator, the monitoring of infrared light intensity, real-time load monitoring of power equipment, and environmental interference monitoring are analyzed, and then the compensation parameters are determined and the infrared data is compensated. The compensated data can be converted into a video signal and visualized by a display. It should be noted that the video signal can be regarded as a signal string composed of continuous images. Therefore, in the embodiment of the present invention, the actual processing object is a continuous multiple-frame initial infrared image.

[0045] See also Figure 3 , which shows a flow chart of a method for compensating infrared data by a compensator provided by an embodiment of the present invention, the method comprising:

[0046] Step S1: Acquire different heating areas of the electric equipment in the initial infrared image; obtain the infrared intensity chaos of the initial infrared image according to the difference in infrared light intensity between the heating areas; obtain the heating trend characteristics of the electric equipment according to the changing trend of the infrared intensity chaos of multiple consecutive frames of initial infrared images.

[0047] The embodiment of the present invention takes into account that the temperature change of the power equipment itself has an obvious correlation with its workload. If the collected temperature change and the load conform to the normal correlation, it means that the error of the collected infrared data is small and the required compensation is small; otherwise, it means that the required compensation is large. Therefore, the embodiment of the present invention needs to first quantify the change trend of the collected infrared data and further analyze the correlation with the voltage signal.

[0048] See also Figure 4 , which shows a schematic diagram of an initial infrared image provided by an embodiment of the present invention. The initial infrared image includes not only infrared information of the power equipment, but also infrared information of the environment in which the power equipment is located. In order to accurately analyze the surface temperature of the power equipment, because the power equipment has obvious fixed shape characteristics, and the temperatures between different heating areas are obviously distinguished, technicians in this field can directly obtain different heating areas of the power equipment in the initial infrared image according to the existing technology.

[0049] In order to quantify the temperature distribution characteristics of the power equipment in the initial infrared image, the embodiment of the present invention can obtain the infrared intensity chaos of the initial infrared image based on the extracted heating areas according to the infrared light intensity difference between the heating areas. That is, the greater the infrared intensity chaos, the more uneven the temperature distribution on the surface of the power equipment in the current initial infrared image.

[0050] Because a frame of initial infrared image represents the instantaneous characteristics at a certain moment, the embodiment of the present invention needs to analyze the temperature change trend in the entire time range during the acquisition process, so the heating trend characteristics of the power equipment can be further obtained based on the infrared intensity chaos change trend of multiple consecutive frames of initial infrared images. That is, the heating trend characteristics represent the changing characteristics of the temperature distribution of the power equipment during the acquisition process. In the embodiment of the present invention, the acquisition process is set to 10 minutes.

[0051] Preferably, in an embodiment of the present invention, the method for the compensator to obtain different heating areas of the electric equipment in the initial infrared image includes:

[0052] Extract edge information from the initial infrared image. Because power equipment has obvious fixed shape features, it has a clear outline template for reference. Therefore, the edge information can be matched according to the preset power instrument outline template to obtain the power instrument area in the initial infrared image. Figure 5 , which shows an edge image of an initial infrared image provided by an embodiment of the present invention. In the embodiment of the present invention, the edge image can be obtained according to the canny edge monitoring algorithm. Figure 5After matching the edge images, the background area information is filtered out to obtain the power instrument area. Figure 6 , which shows a schematic diagram of an electric power instrument area provided by an embodiment of the present invention.

[0053] Because the heating area proposed in the embodiment of the present invention is an area with different temperature distribution, the area can be directly segmented by infrared light intensity, and the power instrument area in the initial infrared image can be threshold segmented to obtain different heating areas. In the embodiment of the present invention, an adaptive threshold segmentation algorithm such as the Otsu threshold method can be used, which is not limited or elaborated here.

[0054] Preferably, in an embodiment of the present invention, the method for the compensator to obtain the infrared intensity chaos degree includes:

[0055] The difference in average infrared light intensity between two different heating areas is obtained, and all differences in average infrared light intensity are averaged to obtain the infrared intensity disorder. That is, there is a difference in average infrared light intensity between two different heating areas. If the average value of the difference is relatively large, it means that the overall temperature distribution of the power equipment area is relatively chaotic.

[0056] Preferably, in an embodiment of the present invention, the method for the compensator to obtain the heating trend characteristics of the electric equipment includes:

[0057] The infrared intensity chaos of multiple consecutive initial infrared images is arranged into an infrared intensity chaos sequence in time sequence. The heating trend characteristics are obtained according to the variance and linear change degree of the infrared intensity chaos sequence. That is, the larger the variance, the more chaotic the distribution of elements in the sequence, and the greater the fluctuation of changes within the time series; the more obvious the linear change degree, the more the measured temperature distribution characteristics are changing with time, indicating that the infrared data of the currently collected power equipment is unstable. That is, the larger the heating trend characteristics, the more unstable the temperature change trend of the power equipment within the current time series.

[0058] As an example, the method for obtaining the degree of linear change in an embodiment of the present invention includes: extracting the serial number of each element in the infrared intensity chaos sequence, obtaining a time sequence number sequence, and using the Pearson correlation coefficient between the infrared intensity chaos sequence and the time sequence number sequence as the degree of linear change.

[0059] In one embodiment of the present invention, the product of the variance of the infrared intensity disorder sequence and the linear variation degree is used as the heating trend feature.

[0060] Step S2: Obtain the voltage signal of the power equipment; obtain the infrared measurement authenticity of the power equipment based on the difference between the voltage change trend and the heating trend characteristics of the voltage signal in the same time range, and the data correlation between the voltage signal and the infrared intensity chaos.

[0061] See also Figure 7 , which shows a schematic diagram of a voltage signal provided by an embodiment of the present invention, and the change in the voltage signal transmission indicates that there is a changing load in the operation of the power equipment. During the operation of the power equipment, as the load changes, the equipment itself will have corresponding temperature changes. In the process of infrared data acquisition, if the trend of load change and temperature distribution change is the same, it means that the error of the currently collected infrared data is small. Therefore, in the same time range, the embodiment of the present invention analyzes the difference between the voltage change trend and the heating trend characteristics of the voltage signal, that is, the smaller the difference is, the more relevant the temperature distribution is to the voltage distribution, the greater the authenticity of the measured data, and the smaller the error; further analyze the data correlation between the voltage signal and the infrared intensity chaos degree, and obtain the infrared measurement authenticity of the power equipment. That is, the infrared measurement authenticity is the result obtained by analyzing the two dimensions of voltage-infrared intensity chaos degree and voltage change trend-heating trend characteristics. The greater the correlation in the two dimensions, the greater the authenticity of the infrared measurement.

[0062] Preferably, in one embodiment of the present invention, the method for the compensator to obtain data correlation includes:

[0063] The voltage data sequence formed by the voltage signal is obtained, that is, the voltage values ​​are arranged in a time sequence to obtain the voltage data sequence.

[0064] Because the data in the voltage data sequence and the data in the infrared intensity chaos degree belong to data with different dimensions and different value ranges, in order to analyze the two types of data, they need to be normalized to eliminate the dimension effect. In the embodiment of the present invention, each data can be standardized using Z standardization or range standardization according to the value range under the corresponding dimension, which is a technical means well known to those skilled in the art and will not be described in detail here.

[0065] After normalizing the voltage data sequence and the infrared intensity chaos degree sequence within the corresponding time series, the mean square error between the two sequences is calculated, and the mean square error is negatively correlated and normalized to obtain data correlation. The larger the mean square error, the greater the data difference between the two, and the smaller the data correlation. It should be noted that the method for obtaining the mean square error is a technical means well known to those skilled in the art, and will not be elaborated here.

[0066] The negative correlation mapping and normalization method proposed in the embodiment of the present invention can be implemented by using the exp(-x) function, that is, the opposite number of the data is taken as the power of an exponential function with a natural constant as the base, and the result obtained is the result after negative correlation mapping and normalization.

[0067] Preferably, in the embodiment of the present invention, similar to the heating trend feature, the voltage change trend can be obtained according to the variance and linear change degree of the voltage data sequence. That is, the product of the variance of the voltage data sequence and the corresponding linear change degree can be used as the voltage change trend.

[0068] Preferably, in one embodiment of the present invention, the method for the compensator to obtain the authenticity of infrared measurement of the power equipment includes:

[0069] The difference between the voltage change trend and the heating trend characteristics is negatively correlated and normalized. The smaller the difference, the stronger the correlation between the voltage change and the temperature distribution change. Therefore, the trend-related characteristics can be obtained after negative correlation mapping and normalization. The trend-related characteristics are multiplied by the data correlation to obtain the infrared measurement authenticity. That is, the final infrared measurement authenticity is a data with a value range between 0 and 1, which can accurately quantify the authenticity.

[0070] Step S3: Obtain the temperature change trend of the environment in which the power equipment is located, and obtain the environmental impact weight according to the temperature change trend and the infrared intensity of the environmental area in the initial infrared image.

[0071] Because temperature will be transferred in the environment, if the temperature distribution in the environment where the power equipment is located is relatively chaotic, it means that the environment has a greater impact on the measurement data during the measurement process, and the initial infrared image collected requires a greater compensation force. Therefore, the embodiment of the present invention obtains the temperature change trend of the environment where the equipment is located. The more chaotic the temperature change trend is, and the greater the infrared intensity of the environmental area is, the higher and more unstable the infrared radiation intensity of the environment for the power equipment is, and the worse the accuracy of the measurement result is. Based on this, the environmental impact weight can be obtained.

[0072] Preferably, in an embodiment of the present invention, the method for the compensator to obtain the temperature change trend of the environment in which the power equipment is located includes:

[0073] Obtain the monitoring temperature sequence of the environment where the power equipment is located. Obtain the differential sequence of the monitoring temperature sequence. Each element in the differential sequence is the difference between each adjacent element in the monitoring temperature sequence, that is, the differential sequence contains temperature change information. The more stable the elements in the differential sequence are, the more stable the temperature change is, and there is a fixed change trend. Therefore, obtain the data difference between two adjacent elements in the differential sequence, and use the average value of the data difference as the temperature change trend. The larger the average value of the data difference is, the more chaotic the temperature change in the environment where the power equipment is located is, and the greater the temperature change trend is.

[0074] It should be noted that the acquisition method of the monitoring temperature sequence is the same as that of the voltage data sequence, which can be directly obtained based on the ambient temperature monitoring signal. Figure 8, which shows a schematic diagram of an ambient temperature monitoring signal provided by an embodiment of the present invention.

[0075] Preferably, the method for obtaining the environmental impact weight of the compensator in the embodiment of the present invention includes:

[0076] The average infrared intensity of the environmental area in multiple consecutive frames of initial infrared images is obtained, and the product of the average infrared intensity and the temperature change trend is used as the environmental impact weight.

[0077] Step S4: Obtain compensation weights according to the infrared measurement authenticity and the environmental impact weights and compensate the infrared intensity data in the initial infrared image.

[0078] The greater the authenticity of the infrared measurement, the less compensation is required for the initial infrared image; the greater the environmental impact weight, the greater the impact of the environment on the measurement, and the greater the degree of compensation required. Therefore, the compensation weight can be obtained based on the authenticity of the infrared measurement and the environmental impact weight. By compensating the infrared intensity data in the initial infrared image according to the compensation weight, accurate infrared data of power equipment with no measurement error can be obtained.

[0079] Preferably, in one embodiment of the present invention, the method in which the compensator obtains the compensation weight and compensates the infrared intensity data in the initial infrared image includes:

[0080] The infrared measurement authenticity is negatively correlated to obtain the degree of measurement error; the degree of measurement error and the Euclidean norm of the environmental impact weight are normalized and added to the positive integer 1 to obtain the compensation weight. That is, the value range of the compensation weight is between 1 and 2, so the compensation weight can be multiplied by the infrared intensity data of each pixel position in the initial infrared image to obtain the compensated infrared image.

[0081] In summary, a compensator is integrated on the infrared thermal imager body of the embodiment of the present invention, and the compensator is used to perform data compensation on the collected initial infrared image of the electric power equipment, thereby eliminating errors. When performing data compensation, the compensator takes into account that the temperature of the electric power equipment will show an obvious correlation with the load, that is, as the load changes, the electric power equipment will also show corresponding changes. Therefore, the present invention analyzes the correlation between voltage and infrared intensity chaos to obtain the authenticity of infrared measurement. Further considering the temperature distribution in the operating environment of the electric power equipment, the impact of the environment on the measurement can be intuitively presented, so the environmental impact weight is obtained, and then the compensation weight is obtained to compensate for the infrared intensity data in the initial infrared image, so that the infrared thermal imager can output more accurate infrared measurement results of the electric power equipment.

[0082] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0083] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. An infrared thermal imager, comprising an infrared thermal imager body, characterized in that: The infrared thermal imager body is connected to the compensator by signals; the compensator is used to compensate the initial infrared image collected by the infrared thermal imager body on the power equipment for display by the infrared thermal imager body; The method for compensating infrared data by the compensator includes: Obtain different heating areas of the electric equipment in the initial infrared image; obtain the infrared intensity disorder of the initial infrared image according to the infrared light intensity difference between the heating areas; obtain the heating trend characteristics of the electric equipment according to the infrared intensity disorder change trend of multiple consecutive frames of initial infrared images; Acquire the voltage signal of the power equipment; obtain the infrared measurement authenticity of the power equipment according to the difference between the voltage change trend of the voltage signal and the heating trend characteristics in the same time series range, and the data correlation between the voltage signal and the infrared intensity chaos degree; Obtaining a temperature change trend of the environment in which the electric equipment is located, and obtaining an environmental impact weight according to the temperature change trend and the infrared intensity of the environmental area in the initial infrared image; A compensation weight is obtained according to the infrared measurement authenticity and the environmental impact weight, and the infrared intensity data in the initial infrared image is compensated.

2. An infrared thermal imager according to claim 1, characterized in that: The method for the compensator to obtain different heating areas of the electric equipment in the initial infrared image includes: Extract edge information from the initial infrared image, match the edge information according to a preset electric instrument outline template to obtain the electric instrument area in the initial infrared image; perform threshold segmentation on the electric instrument area in the initial infrared image to obtain different heating areas.

3. The infrared thermal imager according to claim 1, characterized in that: The method for the compensator to obtain the infrared intensity disorder includes: The difference in average infrared light intensity between two different heating areas is obtained, and all the differences in average infrared light intensity are averaged to obtain the infrared intensity disorder degree.

4. The infrared thermal imager according to claim 1, characterized in that: The method for the compensator to obtain the heating trend characteristics of the electric equipment includes: The infrared intensity chaos of multiple frames of initial infrared images are arranged into an infrared intensity chaos sequence in a time sequence; and the heating trend feature is obtained according to the variance and linear variation degree of the infrared intensity chaos sequence.

5. An infrared thermal imager according to claim 4, characterized in that: The method for the compensator to obtain the data correlation includes: A voltage data sequence formed by the voltage signal is obtained; after normalizing the voltage data sequence and the infrared intensity chaos degree sequence within the corresponding time series range, the mean square error between the two sequences is calculated, and the mean square error is negatively correlated and normalized to obtain the data correlation.

6. The infrared thermal imager according to claim 5, characterized in that: The method for the compensator to obtain the voltage variation trend includes: The voltage variation trend is obtained according to the variance and linear variation degree of the voltage data sequence.

7. The infrared thermal imager according to claim 5, characterized in that: The method for the compensator to obtain the infrared measurement authenticity of the power equipment includes: The difference between the voltage change trend and the heating trend feature is negatively correlated and normalized to obtain trend-related features; the trend-related features are multiplied by the data correlation to obtain the infrared measurement authenticity.

8. The infrared thermal imager according to claim 1, characterized in that: The method for the compensator to obtain the temperature change trend of the environment in which the power equipment is located includes: Acquire a monitoring temperature sequence of the environment where the power equipment is located; obtain a differential sequence of the monitoring temperature sequence; obtain a data difference between two adjacent elements in the differential sequence, and use an average value of the data difference as the temperature change trend.

9. The infrared thermal imager according to claim 1, characterized in that: The method for obtaining the environmental impact weight of the compensator includes: The average infrared intensity of the environmental area in the continuous multiple frames of initial infrared images is obtained, and the product of the average infrared intensity and the temperature change trend is used as the environmental impact weight.

10. The infrared thermal imager according to claim 1, characterized in that: The method in which the compensator obtains the compensation weight and compensates the infrared intensity data in the initial infrared image includes: The infrared measurement authenticity is negatively correlated to obtain the degree of measurement error; the measurement error degree and the Euclidean norm of the environmental impact weight are normalized and added to the positive integer 1 to obtain the compensation weight; the compensation weight is multiplied by the infrared intensity data of each pixel position in the initial infrared image to obtain a compensated infrared image.

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