Target luminous quantity calibration method and calibration device for ultraviolet imaging corona detection

Abstract

The present invention provides a method and device for calibrating the target luminous amount for ultraviolet imaging corona detection, which relates to the field of corona detection technology, wherein the method comprises: obtaining the corona ultraviolet image of the detection target by adjusting the gain adjustment amount of the ultraviolet imaging corona detection device; adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the corona ultraviolet image; using the ultraviolet imaging corona detection device to detect the adjusted calibration light source to obtain the calibration light source image; wherein the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the calibration light source image is the same as the gain adjustment amount when obtaining the corona ultraviolet image; according to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image, calculating the target real luminous amount used to characterize the real corona discharge intensity of the detection target. This scheme can solve the problem that the detection results of the ultraviolet imaging corona detection device are inconsistent and untrue due to various factors.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of corona detection technology, and in particular to a target luminous intensity calibration method and a calibration device for ultraviolet imaging corona detection. Background Art

[0002] At present, ultraviolet imaging corona detection technology has been widely used in power system detection, such as wire injury detection, electrical equipment insulation defect detection and overall maintenance of high-voltage lines and substations. It mainly quantifies the intensity of corona discharge based on the number of ultraviolet photons displayed by the ultraviolet imaging corona detection equipment per unit time, and takes different countermeasures according to different discharge intensities.

[0003] However, in the actual detection process, in order for the UV imaging corona detection device to detect a clear UV image, it is necessary to adjust the parameters such as the gain of the UV imaging corona detection device and the distance to the target. The gain of the UV imaging corona detection device, the distance to the target and the changes in environmental conditions will have a direct impact on the detection results, which means that when the same UV imaging corona detection device performs multiple detections on the same target, the stability of the detection results is difficult to guarantee. In addition, due to the differences in UV imaging corona detection devices produced by different manufacturers, even if different UV imaging corona detection devices detect the same target at the same gain, their detection results are still significantly different.

[0004] Therefore, there is an urgent need for a target luminescence calibration method for ultraviolet imaging corona detection. Summary of the invention

[0005] Based on the problem that ultraviolet imaging corona detection equipment has difficulty in detecting the true corona discharge intensity of the target, the embodiments of the present invention provide a target luminous intensity calibration method and calibration device for ultraviolet imaging corona detection, which can effectively solve the problem that the detection results of ultraviolet imaging corona detection equipment are inconsistent and untrue due to various factors.

[0006] In a first aspect, an embodiment of the present invention provides a method for calibrating target luminous intensity for ultraviolet imaging corona detection, comprising:

[0007] The corona ultraviolet image of the detection target is obtained by adjusting the gain adjustment amount of the ultraviolet imaging corona detection device;

[0008] Adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image;

[0009] The adjusted calibration light source is detected by using the ultraviolet imaging corona detection device to obtain a calibration light source image; wherein the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the calibration light source image is the same as the gain adjustment amount when obtaining the corona ultraviolet image;

[0010] According to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image, the target real luminescence quantity used to characterize the real corona discharge intensity of the detection target is calculated.

[0011] Preferably, the step of adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image comprises:

[0012] Pre-calibrating each gain adjustment amount of the ultraviolet imaging corona detection device to obtain a corresponding relationship between each gain adjustment amount and an actual gain amount;

[0013] Obtaining the current actual gain of the ultraviolet imaging corona detection device according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image and the corresponding relationship between each gain adjustment amount and the actual gain amount;

[0014] The light source output of the calibration light source is adjusted according to the current actual gain.

[0015] Preferably, adjusting the light source output of the calibration light source according to the current actual gain includes:

[0016] The light source input current and / or attenuation of the calibration light source is adjusted according to the current actual gain to adjust the light source output of the calibration light source.

[0017] Preferably, the calculation of the target real luminous amount used to characterize the real corona discharge intensity of the detection target according to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image includes:

[0018] Obtain the luminous intensity of the adjusted calibration light source;

[0019] The actual luminescence amount of the target is calculated according to the target corona area in the corona ultraviolet image, the distance between the ultraviolet imaging corona detection device and the detection target, the light source area in the calibration light source image, the distance between the ultraviolet imaging corona detection device and the calibration light source, and the luminescence amount of the adjusted calibration light source.

[0020] Preferably, the luminous intensity of the adjusted calibration light source is determined by:

[0021] Use a UV illuminometer to measure the optical power of the adjusted calibration light source;

[0022] The light emission of the adjusted calibration light source is calculated according to the adjusted light power of the calibration light source and the frame rate of the ultraviolet imaging corona detection device.

[0023] Preferably, the luminous intensity of the adjusted calibration light source is calculated by the following formula:

[0024]

[0025] Among them, L B is the luminous intensity of the calibrated light source after adjustment; P si is the adjusted optical power of the calibration light source; f is the frame rate of the ultraviolet imaging corona detection device.

[0026] Preferably, when the distance between the ultraviolet imaging corona detection device and the calibration light source is a preset distance, the actual luminous amount of the target is calculated by the following formula:

[0027]

[0028] Among them, L T is the actual luminous intensity of the target; S T is the target corona area; L B is the luminous intensity of the calibration light source after adjustment; S B is the light source area; D T is the distance between the ultraviolet imaging corona detection device and the detection target.

[0029] In a second aspect, an embodiment of the present invention further provides a calibration device, which is a calibration device based on the target luminous amount calibration method for ultraviolet imaging corona detection described in any embodiment of this specification, including an ultraviolet light source module, an optical system module, a power supply module and a communication control module, wherein:

[0030] The ultraviolet light source module is used to generate the calibration light source;

[0031] The optical system module is connected to the ultraviolet light source module and is used to attenuate the calibration light source;

[0032] The power supply module is connected to the ultraviolet light source module and is used to supply power to the calibration light source;

[0033] The communication control module is connected to the optical system module and the power module, and is used to control the power module and the optical system module to control the input current of the calibration light source and the attenuation of the calibration light source, thereby adjusting the light source output of the calibration light source.

[0034] Preferably, it also includes a device-side communication module;

[0035] The device-side communication module is connected to the communication control module and is used to remotely control the communication control module so as to remotely control the input current of the calibration light source and the attenuation of the calibration light source.

[0036] The embodiment of the present invention provides a target luminous intensity calibration method and a calibration device for ultraviolet imaging corona detection, which can adjust the calibration light source according to the gain adjustment amount when the ultraviolet imaging corona detection device detects the target, and detects the adjusted calibration light source by using the ultraviolet imaging corona detection device with the same gain adjustment amount, so as to calculate the target real luminous intensity used to characterize the real corona discharge intensity of the detection target, which can effectively solve the problem that the detection results of the ultraviolet imaging corona detection device are inconsistent and unrealistic due to various factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are 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.

[0038] Figure 1 It is a method flow chart of a method for calibrating target luminous intensity for ultraviolet imaging corona detection provided by one embodiment of the present invention;

[0039] Figure 2 is a method flow chart of another method for calibrating target luminous intensity for ultraviolet imaging corona detection provided by an embodiment of the present invention;

[0040] Figure 3 It is a block diagram of a calibration device provided by an embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of another calibration device provided by an embodiment of the present invention.

[0042] In the figure: 1. Attenuation sheet; 2. UV LED lamp; 3. UV reflective cup. DETAILED DESCRIPTION

[0043] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] As mentioned above, it is difficult for the ultraviolet imaging corona detection equipment to detect the real corona discharge intensity of the target, mainly because the gain adjustment amount of the ultraviolet imaging corona detection equipment needs to be adjusted during detection to detect a clear corona ultraviolet image, and the difference in gain adjustment amount will have a direct impact on the detected real corona discharge intensity of the target. Therefore, it is considered to use a calibration light source with adjustable light source output, adjust the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection equipment during detection, and then use the ultraviolet imaging corona detection equipment to detect the calibration light source, so as to calculate the target real luminous amount used to characterize the real corona discharge intensity of the detection target, which not only eliminates the influence of the gain adjustment amount on the detection result, but also eliminates the influence of various other factors.

[0045] The specific implementation of the above concept is described below.

[0046] Please refer to Figure 1 The embodiment of the present invention provides a method for calibrating target luminous intensity for ultraviolet imaging corona detection, the method comprising:

[0047] Step 100, obtaining a corona ultraviolet image of a detection target by adjusting a gain adjustment amount of an ultraviolet imaging corona detection device;

[0048] Step 102, adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image;

[0049] Step 104, using the ultraviolet imaging corona detection device to detect the adjusted calibration light source to obtain a calibration light source image; wherein the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the calibration light source image is the same as the gain adjustment amount when obtaining the corona ultraviolet image;

[0050] Step 106, calculating the target real luminous amount used to characterize the real corona discharge intensity of the detection target according to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image.

[0051] In the embodiment of the present invention, the calibration light source can be adjusted according to the gain adjustment amount when the ultraviolet imaging corona detection device detects the target, and the adjusted calibration light source is detected by using the ultraviolet imaging corona detection device with the same gain adjustment amount, so as to calculate the target's real luminous amount used to characterize the real corona discharge intensity of the detection target, which can effectively solve the problem of inconsistent and unrealistic detection results of the ultraviolet imaging corona detection device caused by various factors.

[0052] Described below Figure 1 How the various steps are performed.

[0053] First, with respect to step 100, a corona ultraviolet image of the detection target is acquired by adjusting a gain adjustment amount of the ultraviolet imaging corona detection device.

[0054] In actual situations, when wires and other electrical equipment fail, corona discharge will occur. Ultraviolet imaging detection equipment is widely used because of its high sensitivity and ability to detect early hidden dangers of equipment. Ultraviolet imaging corona detection equipment can detect the corona discharge position and corona discharge intensity of the detection target by imaging.

[0055] However, in practical applications, since it is inconvenient to frequently change the position of the ultraviolet imaging corona detection device, in order to enable the ultraviolet imaging corona detection device to detect a clear corona ultraviolet image, it is necessary to adjust the gain adjustment amount and other parameters of the ultraviolet imaging corona detection device, which also causes the corona discharge intensity detected by the ultraviolet imaging corona detection device to be unreal and inconsistent. Therefore, an embodiment of the present invention provides a target luminous amount calibration method for ultraviolet imaging corona detection.

[0056] In the embodiment of the present invention, it is first necessary to use the ultraviolet imaging corona detection equipment to perform corona discharge detection on the detection target, and by adjusting the gain adjustment amount and other parameters of the ultraviolet imaging corona detection equipment, the ultraviolet imaging corona detection equipment can detect a clear corona ultraviolet image.

[0057] Then, with respect to step 102, the light source output of the calibration light source is adjusted according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image.

[0058] In the embodiment of the present invention, please refer to Figure 2 At least the following steps 200-204 may be used to adjust the light source output of the calibration light source:

[0059] Step 200, pre-calibrate each gain adjustment amount of the ultraviolet imaging corona detection equipment to obtain a corresponding relationship between each gain adjustment amount and an actual gain amount.

[0060] In an embodiment of the present invention, in order to save time in adjusting the light source output of the calibration light source on site, the various gears of the gain adjustment amount of the ultraviolet imaging corona detection device can be calibrated in advance in the laboratory, and special equipment is used to mark the actual gain amounts corresponding to different gain gears of the ultraviolet imaging corona detection device, and the corresponding relationship between each gain gear and the actual gain amount is obtained, so that the current actual gain amount of the ultraviolet imaging corona detection device can be directly obtained according to the gain gear of the ultraviolet imaging corona detection device during detection on site.

[0061] Of course, in order to enable the calibration light source to quickly adjust the light source output according to the gain adjustment amount of the ultraviolet imaging corona detection device, a corresponding gain interval can be set in advance for the actual gain amount.

[0062] For example, since the gain adjustment of UV imaging corona detection equipment is usually a maximum of 106 , so the gain interval can be set to [10 i ,10 i+1 ), respectively marked as the actual gain G i =10 i , the value range of i is [0,6], that is, the actual gains are G0 = 1, G1 = 10, G2 = 10 2 ,G3=10 3 ,G4=10 4 ,G5=10 5 ,G6=10 6 , the corresponding actual gain ranges are [1,10), [10,10 2 ),[10 2 ,10 3 ),[10 3 ,10 4 ),[10 4 ,10 5 ),[10 5 ,10 6 ),[10 6 ,10 7 ).

[0063] Then, when the actual gain corresponding to a certain gain level of the UV imaging corona detection device is in [10 2 ,10 3 ), the actual gain corresponding to the gain level is marked as G2 = 10 2 In this way, each gain level of the ultraviolet imaging corona detection device is marked, that is, the corresponding relationship between each gain adjustment amount and the actual gain amount.

[0064] It should be noted that the gain range corresponding to the actual gain amount can be determined according to the actual situation and required accuracy.

[0065] Step 202, obtaining the current actual gain of the ultraviolet imaging corona detection device according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image and the corresponding relationship between each gain adjustment amount and the actual gain amount.

[0066] For example, if during on-site testing, the gain adjustment value of the UV imaging corona detection device, i.e., the actual gain corresponding to the gain gear, is in the range of [10 5 ,10 6 ), then the actual current gain of the UV imaging corona detection device can be obtained as G5 = 10 5 .

[0067] Step 204: adjusting the light source output of the calibration light source according to the current actual gain.

[0068] In the embodiment of the present invention, the light source input current and / or attenuation of the calibration light source may be adjusted according to the current actual gain amount to adjust the light source output amount of the calibration light source.

[0069] Since the actual gain of the UV imaging corona detection device when detecting the detection target is to enhance the detected corona discharge intensity so as to detect a clear corona UV image, when adjusting the calibration light source, the light source output of the calibration light source is reduced according to the current actual gain of the UV imaging corona detection device.

[0070] For example, if the current actual gain is G5 = 10 5 When the light source output of the calibration light source is reduced by 10 from the maximum light source output, the light source input current and / or attenuation of the calibration light source is adjusted. -5 Since only adjusting the input current or attenuation of the calibrated light source may not reduce the current by 10 -5 times the requirement, so the input current of the light source can be reduced by 10 from the maximum operating current -3 times, and by adding 10 -2 The attenuation of the calibration light source is adjusted to 10 -5 times.

[0071] It should be noted that the embodiment of the present invention provides a target luminous intensity calibration device for ultraviolet imaging corona detection, for the calibration light source used in this step, and the calibration device will be introduced later in this specification.

[0072] Next, for step 104, the adjusted calibration light source is detected using an ultraviolet imaging corona detection device to obtain a calibration light source image; wherein the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the calibration light source image is the same as the gain adjustment amount when obtaining the corona ultraviolet image.

[0073] In an embodiment of the present invention, after adjusting the gain adjustment amount of the ultraviolet imaging corona detection device to obtain the corona ultraviolet image of the detection target in step 100, the various parameters of the ultraviolet imaging corona detection device including the gain adjustment amount are kept unchanged, and the ultraviolet imaging corona detection device is used to detect the calibration light source adjusted in step 102 to obtain the calibration light source image detected by the ultraviolet imaging corona detection device.

[0074] Finally, for step 106, the target real luminous amount used to characterize the real corona discharge intensity of the detection target is calculated according to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image.

[0075] In one embodiment of the present invention, the target real luminous amount used to characterize the real corona discharge intensity of the detection target can be calculated at least through the following steps S1-S2:

[0076] S1, obtaining the luminous intensity of the adjusted calibration light source;

[0077] In the embodiment of the present invention, the luminous intensity of the adjusted calibration light source is determined by:

[0078] (1) Use a UV illuminometer to measure the optical power of the adjusted calibration light source;

[0079] (2) Calculate the luminous intensity of the adjusted calibration light source according to the adjusted light power of the calibration light source and the frame rate of the ultraviolet imaging corona detection device.

[0080] In step (1), the optical power of the adjusted calibration light source is directly measured by a UV illuminometer. However, in order to improve the on-site calculation speed of the target real luminous amount, the light source output of the calibration light source can be adjusted in advance in the laboratory according to the actual gain amounts marked in step 200, and the optical power corresponding to the calibration light source adjusted by each actual gain amount can be measured with a UV illuminometer. Then, the optical power of the adjusted calibration light source can be directly obtained on-site according to the current actual gain amount of the UV imaging corona detection device, and it is no longer necessary to use a UV illuminometer for measurement on-site.

[0081] For example, in the laboratory, according to the actual gain values ​​G0=1, G1=10, G2=10 2 ,G3=10 3 ,G4=10 4 ,G5=10 5 ,G6=10 6 Adjust the light output of the calibration light source, and use a UV illuminance meter to measure the light power corresponding to the calibration light source after each actual gain adjustment, and record it.

[0082] For example, the optical power corresponding to the calibrated light source after each actual gain adjustment is marked as P si (i=0,1,2,…6), where P s0 is the optical power measured at the maximum light source output, that is, the optical power corresponding to the calibrated light source after the actual gain is adjusted to G0 = 1. Similarly, P s6 Reduce the maximum light output by 10 -6 times the optical power, that is, according to the actual gain G6 = 10 6 The optical power corresponding to the calibrated light source after adjustment.

[0083] In the embodiment of the present invention, the luminous intensity of the calibrated light source adjusted in step (2) is calculated by the following formula:

[0084]

[0085] Among them, L B is the luminous intensity of the calibrated light source after adjustment; P si is the light power of the adjusted calibration light source; f is the frame rate of the UV imaging corona detection device.

[0086] In the embodiment of the present invention, P si is obtained in step (1), and f can be read from the ultraviolet imaging corona detection device. They are all known quantities, so the luminous intensity of the adjusted calibration light source can be calculated.

[0087] S2, calculating the target real luminous intensity according to the target corona area in the corona ultraviolet image, the distance between the ultraviolet imaging corona detection device and the detection target, the light source area in the calibration light source image, the distance between the ultraviolet imaging corona detection device and the calibration light source, and the luminous intensity of the adjusted calibration light source.

[0088] In the embodiment of the present invention, the distance between the ultraviolet imaging corona detection device and the calibration light source is a preset distance, wherein the preset distance may be 5.5m, and the actual luminous amount of the target may be calculated by the following formula:

[0089]

[0090] Among them, L T is the actual luminous intensity of the target; S T is the target corona area; L B is the luminous intensity of the calibration light source after adjustment; S B is the light source area; D T is the distance between the UV imaging corona detection equipment and the detection target.

[0091] In the embodiment of the present invention, S T and S B They can be calculated by the corona ultraviolet image detected by the ultraviolet imaging corona detection equipment and the calibration light source image, respectively. B is the known quantity calculated in step S1; D T It can be measured using ultraviolet imaging corona detection equipment or auxiliary measurement tools, so the target's real luminescence amount, which is used to characterize the real corona discharge intensity of the detection target, can be calculated.

[0092] like Figure 3 As shown, an embodiment of the present invention provides a calibration device for a target luminous amount calibration method for ultraviolet imaging corona detection based on any embodiment of this specification, including: an ultraviolet light source module, an optical system module, a power supply module and a communication control module, wherein:

[0093] An ultraviolet light source module, used to generate a calibration light source;

[0094] An optical system module, connected to the ultraviolet light source module, and used to attenuate the calibration light source;

[0095] A power module, connected to the ultraviolet light source module, for supplying power to the calibration light source;

[0096] The communication control module is connected to the optical system module and the power module, and is used to control the power module and the optical system module to control the input current of the calibration light source and the attenuation of the calibration light source, thereby adjusting the light source output of the calibration light source.

[0097] In an embodiment of the present invention, the calibration device is used in a target luminous intensity calibration method for ultraviolet imaging corona detection to generate a calibration light source, and can execute step 102 to adjust the light source input current and / or attenuation of the calibration light source according to the current actual gain amount to achieve the purpose of adjusting the light source output of the calibration light source.

[0098] In the embodiment of the present invention, the calibration device can be used to adjust the light source output of the calibration light source according to the current actual gain in step 102. Therefore, the process of adjusting the light source output is described below. 6 , and the actual gain values ​​are set to G0=1, G1=10, G2=10 2 ,G3=10 3 ,G4=10 4 ,G5=10 5 ,G6=10 6 Therefore, the output of the calibration light source is adjusted by 10 -6 Give examples for times.

[0099] First, the initial state of the calibration device is that the calibration light source works stably at the maximum working current, and no attenuation plate is added to the optical system. Then, by controlling the communication control module, the power module reduces the light source input current of the ultraviolet light source module to 10% of the maximum working current. -3 Then, control the communication control module to add 10 -3 The attenuation sheet with a high attenuation degree can achieve a 10% reduction in the output of the calibrated light source. -6 times adjustment.

[0100] It should be noted that since only the input current or attenuation of the calibration light source is adjusted, it is not possible to reduce the 10 -6Therefore, according to the actual situation and adjustment requirements, you can choose to adjust the input current of the calibration light source, or adjust the attenuation, or adjust both methods at the same time.

[0101] In addition, in the embodiments of the present invention, reference may be made to Figure 4 It is a schematic diagram of an optical system module and an ultraviolet light source module. The ultraviolet LED lamp 2 is located at the focus of the parabolic ultraviolet reflector cup 3. The light emitted by the ultraviolet LED lamp 2 is reflected by the ultraviolet reflector cup 3 and then reflected out in the form of parallel light. An attenuation sheet 1 is placed at the light outlet position to modulate the light source intensity of the ultraviolet LED lamp 2, that is, the light source output, so as to achieve the attenuation of the light source output of the calibration light source.

[0102] In an embodiment of the present invention, the target luminous quantity calibration device for ultraviolet imaging corona detection further includes a device-side communication module;

[0103] The device-side communication module is connected to the communication control module and is used to remotely control the communication control module so as to remotely control the input current of the calibration light source and the attenuation degree of the calibration light source.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for calibrating target luminescence for ultraviolet imaging corona detection, characterized in that: include: The corona ultraviolet image of the detection target is obtained by adjusting the gain adjustment amount of the ultraviolet imaging corona detection device; Adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image; The adjusted calibration light source is detected by using the ultraviolet imaging corona detection device to obtain a calibration light source image; wherein the gain adjustment amount of the ultraviolet imaging corona detection device when obtaining the calibration light source image is the same as the gain adjustment amount when obtaining the corona ultraviolet image; According to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image, the target real luminescence quantity used to characterize the real corona discharge intensity of the detection target is calculated.

2. The method according to claim 1, characterized in that The step of adjusting the light source output of the calibration light source according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image comprises: Pre-calibrating each gain adjustment amount of the ultraviolet imaging corona detection device to obtain a corresponding relationship between each gain adjustment amount and an actual gain amount; Obtaining the current actual gain of the ultraviolet imaging corona detection device according to the gain adjustment amount of the ultraviolet imaging corona detection device when acquiring the corona ultraviolet image and the corresponding relationship between each gain adjustment amount and the actual gain amount; The light source output of the calibration light source is adjusted according to the current actual gain.

3. The method according to claim 2, characterized in that The step of adjusting the light source output of the calibration light source according to the current actual gain comprises: The light source input current and / or attenuation of the calibration light source is adjusted according to the current actual gain to adjust the light source output of the calibration light source.

4. The method according to claim 1, characterized in that: The method of calculating the target real luminous amount used to characterize the real corona discharge intensity of the detection target according to the corona ultraviolet image, the adjusted calibration light source and the calibration light source image comprises: Obtain the luminous intensity of the adjusted calibration light source; The actual luminescence amount of the target is calculated according to the target corona area in the corona ultraviolet image, the distance between the ultraviolet imaging corona detection device and the detection target, the light source area in the calibration light source image, the distance between the ultraviolet imaging corona detection device and the calibration light source, and the luminescence amount of the adjusted calibration light source.

5. The method according to claim 4, characterized in that The luminous intensity of the adjusted calibration light source is determined as follows: Use a UV illuminometer to measure the optical power of the adjusted calibration light source; The light emission of the adjusted calibration light source is calculated according to the adjusted light power of the calibration light source and the frame rate of the ultraviolet imaging corona detection device.

6. The method according to claim 5, characterized in that The luminous intensity of the adjusted calibration light source is calculated by the following formula: in, is the luminous intensity of the calibrated light source after adjustment; is the optical power of the calibrated light source after adjustment; is the frame rate of the UV imaging corona detection device.

7. The method according to claim 6, characterized in that When the distance between the ultraviolet imaging corona detection device and the calibration light source is a preset distance, the actual luminous amount of the target is calculated by the following formula: in, is the actual luminous amount of the target; is the target corona area; is the luminous intensity of the calibrated light source after adjustment; is the light source area; is the distance between the ultraviolet imaging corona detection device and the detection target.

8. A calibration device based on the target luminous amount calibration method for ultraviolet imaging corona detection according to any one of claims 1 to 7, comprising an ultraviolet light source module, an optical system module, a power supply module and a communication control module, wherein: The ultraviolet light source module is used to generate the calibration light source; The optical system module is connected to the ultraviolet light source module and is used to attenuate the calibration light source; The power supply module is connected to the ultraviolet light source module and is used to supply power to the calibration light source; The communication control module is connected to the optical system module and the power module, and is used to control the power module and the optical system module to control the input current of the calibration light source and the attenuation of the calibration light source, thereby adjusting the light source output of the calibration light source.

9. The calibration device according to claim 8, characterized in that: Also includes a device-side communication module; The device-side communication module is connected to the communication control module and is used to remotely control the communication control module so as to remotely control the input current of the calibration light source and the attenuation of the calibration light source.

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