Oil gas storage tank and automatic management system thereof

Abstract

The invention discloses an oil and gas storage tank and an automatic management system thereof, and the method comprises the following steps: obtaining infrared image data information of the oil and gas storage tank, and carrying out the image enhancement preprocessing of the oil and gas storage tank; carrying out oil gas storage tank feature recognition on an oil gas storage tank image enhancement preprocessing result, and carrying out oil gas storage tank image region cutting processing; performing coordinate marking processing on an oil and gas storage tank image area cutting processing result, and generating an oil and gas storage tank temperature map; carrying out temperature anomaly identification processing based on the temperature map of the oil and gas storage tank, and carrying out temperature anomaly region marking area calculation processing; calculating a processing result based on the marked area of the temperature abnormal region, and judging the transmission safety state of the oil and gas storage tank; the oil gas storage tank fault and position can be accurately and rapidly identified and judged by acquiring the infrared image of the oil gas storage tank to perform feature identification to construct the temperature map and performing temperature anomaly identification and regional area calculation.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas storage tank transmission, and particularly to an oil and gas storage tank and its automated management system. Background Art

[0002] At present, most of the monitoring methods for the transmission safety state of oil and gas storage tanks adopt temperature sensors combined with gas sensors to monitor the transmission safety state of oil and gas storage tanks by collecting the temperature signals of oil and gas storage tanks and the leakage gas signals of oil and gas storage tanks. However, this monitoring method for the transmission safety state of oil and gas storage tanks cannot accurately identify and judge the transmission safety state of oil and gas storage tanks. In particular, the temperature sensor can only collect the temperature of the oil and gas storage tank at a single point. Since the temperature distribution of the oil and gas storage tank cannot be fully obtained, it is easy to cause errors in judging the transmission safety state of the oil and gas storage tank. Moreover, by detecting the leakage of the oil and gas storage tank through the gas sensor, even if the leakage of gasoline in the oil and gas storage tank is detected, the specific location of the leakage of the oil and gas storage tank and the accurate judgment of the leakage degree cannot be monitored, and effective measures cannot be taken in time to prevent the accident from further aggravating. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an oil and gas storage tank and its automated management system, which realizes feature recognition by obtaining the infrared image of the oil and gas storage tank to construct a temperature map, and performs temperature anomaly recognition and regional area calculation, accurately and quickly identifying and judging the faults and positions of the oil and gas storage tank.

[0004] In order to achieve the above invention purpose, the present invention adopts the following technical solutions:

[0005] The first aspect of the present application provides an automated management method for an oil and gas storage tank, including the following steps:

[0006] S101. Obtain the infrared image data information of the oil and gas storage tank, and perform preprocessing on the enhancement of the oil and gas storage tank image;

[0007] S102. Perform feature recognition on the result of the preprocessing of the enhancement of the oil and gas storage tank image, and perform image region cutting processing on the oil and gas storage tank image;

[0008] S103. Perform coordinate marking processing on the result of the image region cutting processing of the oil and gas storage tank, and generate a temperature map of the oil and gas storage tank;

[0009] S104. Perform temperature anomaly recognition processing based on the temperature map of the oil and gas storage tank, and perform calculation processing on the marked area of the temperature anomaly region;

[0010] S105. Based on the result of the calculation processing of the marked area of the temperature anomaly region, judge the transmission safety state of the oil and gas storage tank.

[0011] Further, obtaining the infrared image data information of the oil and gas storage tank and performing preprocessing on the image enhancement of the oil and gas storage tank includes the following steps:

[0012] Separate the noise frequency band and retain the regional edge through guided filtering by wavelet transform to suppress noise;

[0013] Perform adaptive histogram equalization by setting the contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement.

[0014] Further, performing adaptive histogram equalization by setting the contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement includes the following steps:

[0015] Segment the infrared image of the oil and gas storage tank into several regions;

[0016] Calculate the pixel gray value of each region to generate a regional histogram;

[0017] Truncate the pixels greater than the set contrast threshold and evenly distribute the total pixels of the truncated part to the pixels in all gray levels;

[0018] Perform equalization processing on the regional histogram after pixel truncation and distribution processing;

[0019] Perform interpolation smoothing processing on the regional histogram after equalization processing through bilinear interpolation.

[0020] Further, performing feature recognition of the oil and gas storage tank on the result of the preprocessing of the image enhancement of the oil and gas storage tank and performing image region cutting processing on the oil and gas storage tank image includes the following steps:

[0021] Perform feature recognition of the oil and gas storage tank on the result of the preprocessing of the image enhancement of the oil and gas storage tank, and identify the features of the top of the tank body, the side wall of the tank body, and the bottom of the tank body;

[0022] Perform image region cutting processing on the oil and gas storage tank image according to the features of the top of the tank body, the side wall of the tank body, and the bottom of the tank body to obtain the image regions of the top of the tank body, the side wall of the tank body, and the bottom of the tank body.

[0023] Further, performing coordinate marking processing on the result of the image region cutting processing of the oil and gas storage tank and generating a temperature map of the oil and gas storage tank includes the following steps:

[0024] Perform coordinate marking processing on the image regions of the top of the tank body, the side wall of the tank body, and the bottom of the tank body;

[0025] Obtain the temperature value of each pixel in the image regions of the top of the tank body, the side wall of the tank body, and the bottom of the tank body;

[0026] Construct an oil and gas storage tank temperature map based on the image regions of the top, side wall, and bottom of the tank that have been processed with coordinate markings and their corresponding pixel temperature values.

[0027] Furthermore, perform temperature anomaly identification processing based on the oil and gas storage tank temperature map, and perform temperature anomaly region marked area calculation processing, including the following steps:

[0028] Perform temperature anomaly identification processing based on the oil and gas storage tank temperature map to identify temperature anomaly regions;

[0029] Calculate the temperature change rate of the temperature anomaly region, and mark the temperature anomaly regions with a temperature change rate greater than the set threshold of the temperature change rate, or / and perform a temperature difference operation between the abnormal temperature of the temperature anomaly region and the set threshold of the safe temperature, and perform temperature anomaly risk marking on the result of the temperature difference operation;

[0030] Extract the shape features of the temperature anomaly region after the marking process and perform area calculation processing.

[0031] Furthermore, based on the result of the temperature anomaly region marked area calculation processing, perform judgment on the transmission safety state of the oil and gas storage tank, including the following steps:

[0032] If the temperature of the marked temperature anomaly region is less than the set threshold of the low temperature, it is judged that there is a low temperature patch at the bottom of the oil and gas storage tank, and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0033] If the temperature of the marked temperature anomaly region is greater than the set threshold of the safe temperature, it is judged that there is damage to the insulation layer material of the oil and gas storage tank, and the degree of damage to the insulation layer of the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0034] If the temperature of the marked temperature anomaly region is greater than the set threshold of the high temperature warning temperature, it is judged that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0035] If the temperature change rate of the marked temperature anomaly region is greater than the set threshold of the temperature change rate, it is judged that there is a leak in the oil and gas storage tank, and the degree of leakage of the oil and gas storage tank is judged according to the area of the temperature anomaly region and the shape features of the temperature anomaly region.

[0036] The second aspect of the present application provides an automated management system for oil and gas storage tanks, including:

[0037] A data acquisition unit for acquiring oil and gas storage tank infrared image data information;

[0038] An image enhancement preprocessing unit for performing image enhancement preprocessing on the infrared image data information of the oil and gas storage tank;

[0039] An image region cutting unit for performing oil and gas storage tank feature recognition on the result of the oil and gas storage tank image enhancement preprocessing and performing oil and gas storage tank image region cutting processing;

[0040] A temperature map construction unit for performing coordinate marking processing on the result of the oil and gas storage tank image region cutting processing and generating an oil and gas storage tank temperature map;

[0041] A temperature anomaly recognition unit for performing temperature anomaly recognition processing based on the oil and gas storage tank temperature map and performing temperature anomaly region marked area calculation processing;

[0042] An oil and gas storage tank operation state judgment unit for judging the transmission safety state of the oil and gas storage tank based on the result of the temperature anomaly region marked area calculation processing.

[0043] Furthermore, the image enhancement preprocessing unit performing image enhancement preprocessing on the infrared image data information of the oil and gas storage tank includes:

[0044] Separating the noise frequency band and retaining the region edge through guided filtering by wavelet transform to suppress noise;

[0045] Performing adaptive histogram equalization processing by setting a contrast threshold to achieve regional local enhancement of temperature difference details and avoid global over-enhancement.

[0046] Furthermore, performing adaptive histogram equalization processing by setting a contrast threshold to achieve regional local enhancement of temperature difference details and avoid global over-enhancement includes:

[0047] Segmenting the infrared image of the oil and gas storage tank into several regions;

[0048] Calculating the pixel gray value of each region to generate a region histogram;

[0049] Truncating the pixels greater than the set contrast threshold and evenly distributing the total pixels of the truncated part to the pixels in all gray levels;

[0050] Equalizing the region histogram processed by pixel truncation and distribution;

[0051] Performing interpolation smoothing processing on the region histogram processed by equalization through bilinear interpolation.

[0052] Furthermore, the image region cutting unit performing oil and gas storage tank feature recognition on the result of the oil and gas storage tank image enhancement preprocessing and performing oil and gas storage tank image region cutting processing includes:

[0053] Perform oil and gas storage tank feature recognition on the image enhancement preprocessing results of the oil and gas storage tank, and identify the features of the tank top, the tank side wall, and the tank bottom;

[0054] Perform image region cutting processing on the oil and gas storage tank image according to the features of the tank top, the tank side wall, and the tank bottom to obtain the tank top image region, the tank side wall image region, and the tank bottom image region.

[0055] Furthermore, the temperature map construction unit performs coordinate marking processing on the results of the oil and gas storage tank image region cutting processing, and generates an oil and gas storage tank temperature map including:

[0056] Perform coordinate marking processing on the tank top image region, the tank side wall image region, and the tank bottom image region;

[0057] Obtain the temperature value of each pixel in the tank top image region, the tank side wall image region, and the tank bottom image region;

[0058] Based on the coordinate-marked tank top image region, the tank side wall image region, the tank bottom image region, and their corresponding pixel temperature values, construct an oil and gas storage tank temperature map.

[0059] Furthermore, the temperature anomaly recognition unit performs temperature anomaly recognition processing based on the oil and gas storage tank temperature map, and performs temperature anomaly region marked area calculation processing including:

[0060] Perform temperature anomaly recognition processing based on the oil and gas storage tank temperature map to identify the temperature anomaly region;

[0061] Calculate the temperature change rate of the temperature anomaly region, and mark the temperature anomaly region with a temperature change rate greater than the set threshold of the temperature change rate, or / and perform temperature difference processing on the abnormal temperature of the temperature anomaly region and the set threshold of the safe temperature, and perform temperature anomaly risk marking on the result of the temperature difference processing;

[0062] Extract the shape features of the temperature anomaly region after the marking processing, and perform area calculation processing.

[0063] Furthermore, the oil and gas storage tank operation state judgment unit judges the transmission safety state of the oil and gas storage tank based on the result of the temperature anomaly region marked area calculation processing, including:

[0064] If the temperature of the marked temperature anomaly region is less than the set threshold of the low temperature, it is judged that there is a low temperature patch at the bottom of the oil and gas storage tank, and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0065] If the temperature of the marked temperature abnormal area is greater than the safety temperature setting threshold, it is determined that there is damage to the thermal insulation layer of the oil and gas storage tank, and the damage degree of the thermal insulation layer of the oil and gas storage tank is judged according to the area of the temperature abnormal area;

[0066] If the temperature of the marked temperature abnormal area is greater than the high temperature warning temperature setting threshold, it is determined that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of the temperature abnormal area;

[0067] If the temperature change rate of the marked temperature abnormal area is greater than the temperature change rate setting threshold, it is determined that there is a leak in the oil and gas storage tank, and the leak degree of the oil and gas storage tank is determined according to the area of the temperature abnormal area and the shape characteristics of the temperature abnormal area.

[0068] The beneficial effects of this application: By performing noise filtering processing and contrast enhancement processing on the infrared image of the oil and gas storage tank, it is possible to separate the noise frequency band, retain the region edge, and enhance the local temperature difference details in the region, avoiding global over-enhancement.

[0069] It realizes adaptive histogram equalization processing by setting a contrast threshold, dynamically adjusts the enhancement intensity according to different region characteristics, avoids over-enhancement by truncating and reallocating pixels, and eliminates boundary artifacts between regions through interpolation smoothing processing, so as to enhance the local contrast of the infrared image of the oil and gas storage tank and effectively suppress noise, thereby realizing local enhancement of temperature difference details in the region and avoiding global over-enhancement.

[0070] By performing image region cutting processing on the oil and gas storage tank image, several tank body image region maps are obtained, which can improve the recognition rate and accuracy of temperature abnormalities in the oil and gas storage tank.

[0071] By constructing a temperature map of the oil and gas storage tank according to the coordinates of the oil and gas storage tank image and its corresponding pixel temperature values, the abnormal position of the oil and gas storage tank can be quickly and accurately located.

[0072] By performing temperature abnormality recognition processing on the temperature map of the oil and gas storage tank, the area position of the temperature abnormal area is recognized, compared with the temperature setting threshold according to the temperature of the temperature abnormal area, the temperature abnormal area is marked, and the area calculation processing is performed on the marked temperature abnormal area, so as to accurately identify the abnormal fault type and degree of the oil and gas storage tank. Brief Description of the Drawings

[0073] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0074] Figure 1 It is a schematic diagram of the steps of an automatic management method for an oil and gas storage tank of the present invention. Detailed implementation manners

[0075] The following will describe the embodiments of the present invention in detail with reference to the drawings.

[0076] The following illustrates the implementation manners of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0077] Embodiment 1

[0078] An automatic management method for an oil and gas storage tank includes the following steps:

[0079] S101. Obtain the infrared image data information of the oil and gas storage tank, and perform preprocessing on the image enhancement of the oil and gas storage tank;

[0080] Based on the time series, obtain the infrared image data information of the oil and gas storage tank, and perform preprocessing on the image enhancement of the oil and gas storage tank to obtain the preprocessing result of the image enhancement of the oil and gas storage tank. The preprocessing of the image enhancement of the oil and gas storage tank includes noise filtering processing and contrast enhancement processing. By performing noise filtering processing and contrast enhancement processing on the infrared image of the oil and gas storage tank, it is possible to separate the noise frequency band, retain the region edge, and enhance the temperature difference details of the region locally, avoiding global over-enhancement.

[0081] Obtaining the infrared image data information of the oil and gas storage tank and performing preprocessing on the image enhancement of the oil and gas storage tank includes the following steps:

[0082] Separate the noise frequency band by wavelet transform and retain the region edge by guided filtering to suppress noise;

[0083] Adaptive histogram equalization is performed by setting a contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement.

[0084] For example, the noise frequency band is separated by wavelet transform and the region edges are retained by guided filtering to suppress noise. The noisy image is separated into high-frequency subbands and low-frequency subbands by wavelet transform, and the high-frequency subbands and low-frequency subbands are adaptively filtered by guided filtering to achieve denoising of the low-frequency subbands and edge enhancement of the high-frequency subbands, thereby improving the noise suppression effect.

[0085] Adaptive histogram equalization is performed by setting a contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement, including the following steps:

[0086] Segment the infrared image of the oil and gas storage tank into several regions; (For example, segment the infrared image of the oil and gas storage tank into 8×8 regions)

[0087] Calculate the pixel gray values of each region to generate a region histogram;

[0088] Truncate the pixels greater than the set contrast threshold, and evenly distribute the total number of truncated pixels to the pixels in all gray levels;

[0089] Equalize the region histogram processed by pixel truncation and distribution;

[0090] Interpolate and smooth the region histogram processed by equalization through bilinear interpolation.

[0091] Adaptive histogram equalization is performed by setting a contrast threshold, dynamically adjusting the enhancement intensity according to different region characteristics, avoiding over-enhancement by truncating and redistributing pixels, and eliminating boundary artifacts between regions through interpolation and smoothing processing, so as to enhance the local contrast of the infrared image of the oil and gas storage tank and effectively suppress noise, thereby achieving local enhancement of temperature difference details in the region and avoiding global over-enhancement.

[0092] S102. Perform feature recognition of the oil and gas storage tank on the enhanced preprocessing result of the oil and gas storage tank image, and perform region cutting processing on the oil and gas storage tank image;

[0093] By performing preprocessing of oil and gas storage tank image enhancement on the infrared image data information of the oil and gas storage tank, the result of preprocessing of oil and gas storage tank image enhancement is obtained. Perform feature recognition processing on the result of preprocessing of oil and gas storage tank image enhancement to obtain the result of feature recognition processing of oil and gas storage tank, and perform image region cutting processing on the result of feature recognition processing of oil and gas storage tank to obtain several oil and gas storage tank image regions. The features of the oil and gas storage tank include the features of the top of the tank body, the features of the side wall of the tank body, and the features of the bottom of the tank body. The oil and gas storage tank image regions include the top image region of the tank body, the side wall image region of the tank body, and the bottom image region of the tank body. By performing image region cutting processing on the oil and gas storage tank image, several tank body image region diagrams can be obtained, which can improve the recognition rate and accuracy of temperature anomalies of the oil and gas storage tank.

[0094] Performing feature recognition on the result of preprocessing of oil and gas storage tank image enhancement, and performing image region cutting processing on the oil and gas storage tank image includes the following steps:

[0095] Performing feature recognition on the result of preprocessing of oil and gas storage tank image enhancement to identify the features of the top of the tank body, the features of the side wall of the tank body, and the features of the bottom of the tank body;

[0096] Performing image region cutting processing on the oil and gas storage tank image according to the features of the top of the tank body, the features of the side wall of the tank body, and the features of the bottom of the tank body to obtain the top image region of the tank body, the side wall image region of the tank body, and the bottom image region of the tank body.

[0097] For example, performing image region cutting processing on the oil and gas storage tank image according to the features of the top of the tank body to obtain the top image region of the tank body, and the top image region of the tank body includes the first top image sub-region of the tank body, the second top image sub-region of the tank body, the third top image sub-region of the tank body... the Nth top image sub-region of the tank body.

[0098] S103. Perform coordinate marking processing on the result of image region cutting processing of the oil and gas storage tank image, and generate an oil and gas storage tank temperature map;

[0099] By performing feature recognition on the result of preprocessing of oil and gas storage tank image enhancement and performing image region cutting processing, the top image region of the tank body, the side wall image region of the tank body, and the bottom image region of the tank body are obtained. Perform coordinate marking processing on the top image region of the tank body, the side wall image region of the tank body, and the bottom image region of the tank body, and obtain the temperature value of each pixel. According to the coordinates of the oil and gas storage tank image and its corresponding pixel temperature value, an oil and gas storage tank temperature map is constructed, so as to quickly and accurately locate the abnormal position of the oil and gas storage tank.

[0100] Performing coordinate marking processing on the result of image region cutting processing of the oil and gas storage tank image, and generating an oil and gas storage tank temperature map includes the following steps:

[0101] Perform coordinate marking processing on the top image area, side wall image area, and bottom image area of the tank body;

[0102] Obtain the temperature value of each pixel in the top image area, side wall image area, and bottom image area of the tank body;

[0103] Based on the top image area, side wall image area, bottom image area of the tank body after coordinate marking processing and their corresponding pixel temperature values, construct a temperature map of the oil and gas storage tank.

[0104] For example, perform coordinate marking processing on the top image area, side wall image area, and bottom image area of the tank body to obtain the coordinate map A of the top image area of the tank body i (x, y), the coordinate map B of the side wall image area of the tank body i (x, y) and the coordinate map C of the bottom image area of the tank body i (x, y), obtain the temperature value of each corresponding pixel, and construct a temperature map of the oil and gas storage tank to obtain the temperature map A of the top image area of the tank body i (x, y, T), the temperature map B of the side wall image area of the tank body i (x, y, T), the temperature map C of the bottom image area of the tank body i (x, y, T). For example, if local temperature overheating anomaly occurs in the first sub-area A1 (6.5, 51.0, 85 °C) of the top image area of the tank body, the location of the local temperature overheating anomaly in the first sub-area of the top image area of the tank body can be quickly and accurately located through its coordinates.

[0105] S104. Perform temperature anomaly identification processing based on the temperature map of the oil and gas storage tank, and perform temperature anomaly area marking area calculation processing;

[0106] Perform coordinate marking processing on the cutting processing result of the oil and gas storage tank image area, generate a temperature map of the oil and gas storage tank, and obtain the temperature map of the oil and gas storage tank. Perform temperature anomaly identification processing on the temperature map of the oil and gas storage tank, identify the area location of the temperature anomaly, compare the temperature of the temperature anomaly area with the temperature setting threshold, mark the temperature anomaly area, and perform area calculation processing on the marked temperature anomaly area, so as to accurately identify the abnormal fault type and degree of the oil and gas storage tank.

[0107] Performing temperature anomaly identification processing based on the temperature map of the oil and gas storage tank and performing temperature anomaly area marking area calculation processing includes the following steps:

[0108] Perform temperature anomaly identification processing based on the temperature map of the oil and gas storage tank to identify the temperature anomaly area;

[0109] Calculate the temperature change rate for the temperature anomaly region, and mark the temperature change rate for the temperature anomaly regions where the temperature change rate is greater than the set threshold of the temperature change rate, and / or perform a temperature difference operation on the abnormal temperature of the temperature anomaly region and the set threshold of the safe temperature, and mark the temperature anomaly risk for the result of the temperature difference operation;

[0110] Extract the shape features of the temperature anomaly region after the marking process, and perform area calculation processing.

[0111] For example, perform temperature anomaly recognition processing on the temperature map of the oil and gas storage tank, identify that the temperature gradient of the third side wall image sub-region in the top image region of the tank body drops suddenly (such as gasoline leakage in this region causes the temperature to drop), calculate the temperature change rate at the position of the temperature anomaly region of the third side wall image sub-region, if the temperature change rate is greater than the set threshold of the temperature change rate, mark the temperature change rate for the position of the temperature anomaly region of the third side wall image sub-region, and perform area calculation processing on the position of the temperature anomaly region marked with the temperature change rate, so as to accurately identify whether there is gasoline leakage and the leakage degree in the oil and gas storage tank.

[0112] For example, perform temperature anomaly recognition processing on the temperature map of the oil and gas storage tank, identify that the temperature gradient of the second top image sub-region in the top image region of the tank body suddenly rises (such as the insulation material in this region is damaged, causing the temperature to rise), perform a temperature difference operation on the abnormal temperature of the temperature anomaly region position of the second top image sub-region and the set threshold of the safe temperature, obtain the result of the temperature difference operation, if the result of the temperature difference operation is 12 degrees Celsius (the abnormal temperature at the position of the temperature anomaly region is 12 degrees Celsius higher than the set threshold of the safe temperature), then mark the temperature anomaly risk for the region where the temperature gradient suddenly changes in the second top image sub-region, and perform area calculation processing on the temperature anomaly region processed with the temperature anomaly risk marking, so as to accurately identify whether there is damage to the insulation material in the oil and gas storage tank and the degree of damage.

[0113] S105. Based on the result of the area calculation processing of the temperature anomaly region mark, judge the transmission safety state of the oil and gas storage tank;

[0114] Through temperature anomaly recognition processing on the temperature map of the oil and gas storage tank, and area calculation processing of the temperature anomaly region mark, obtain the result of the area calculation processing of the temperature anomaly region mark. Through the result of the area calculation processing of the temperature anomaly region mark, judge the transmission safety state of the oil and gas storage tank. The transmission safety state of the oil and gas storage tank includes water accumulation at the bottom of the oil and gas storage tank, damage to the insulation layer of the oil and gas storage tank, fire risk in the oil and gas storage tank, and leakage of the oil and gas storage tank.

[0115] Based on the calculation result of the marked area of the temperature anomaly region, judging the transmission safety state of the oil and gas storage tank includes the following steps:

[0116] If the temperature of the marked temperature anomaly region is lower than the low-temperature threshold, it is judged that there is a low-temperature patch at the bottom of the oil and gas storage tank (local low temperature at the bottom of the tank caused by accumulated water), and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0117] If the temperature of the marked temperature anomaly region is higher than the safety temperature threshold, it is judged that there is damage to the thermal insulation layer material of the oil and gas storage tank, and the degree of damage to the thermal insulation layer of the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0118] If the temperature of the marked temperature anomaly region is higher than the high-temperature warning temperature threshold, it is judged that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of the temperature anomaly region;

[0119] If the temperature change rate of the marked temperature anomaly region is greater than the temperature change rate threshold, it is judged that there is a leak in the oil and gas storage tank, and the degree of leakage of the oil and gas storage tank is judged according to the area of the temperature anomaly region and the shape characteristics of the temperature anomaly region.

[0120] Embodiment 2

[0121] The above is an oil and gas storage tank automatic management method provided in the embodiments of the present application. The following is an oil and gas storage tank automatic management system provided in the embodiments of the present application.

[0122] An oil and gas storage tank automatic management system includes:

[0123] A data acquisition unit for acquiring oil and gas storage tank infrared image data information;

[0124] An image enhancement preprocessing unit for performing oil and gas storage tank image enhancement preprocessing on the oil and gas storage tank infrared image data information;

[0125] An image region cutting unit for performing oil and gas storage tank feature recognition on the result of the oil and gas storage tank image enhancement preprocessing, and performing oil and gas storage tank image region cutting processing;

[0126] A temperature map construction unit for performing coordinate marking processing on the result of the oil and gas storage tank image region cutting processing, and generating an oil and gas storage tank temperature map;

[0127] A temperature anomaly recognition unit for performing temperature anomaly recognition processing based on the oil and gas storage tank temperature map, and performing calculation processing on the marked area of the temperature anomaly region;

[0128] An operating state judgment unit for oil and gas storage tanks, which is used to judge the transmission safety state of oil and gas storage tanks based on the calculation result of the marked area of the temperature abnormal area.

[0129] An image enhancement preprocessing unit, which is used to perform image enhancement preprocessing on the infrared image data information of oil and gas storage tanks, including:

[0130] Separating the noise frequency band and retaining the region edge by guided filtering through wavelet transform to suppress noise;

[0131] Performing adaptive histogram equalization processing by setting a contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement.

[0132] Among them, performing adaptive histogram equalization processing by setting a contrast threshold to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement includes:

[0133] Segmenting the infrared image of the oil and gas storage tank into several regions;

[0134] Calculating the pixel gray value of each region to generate a region histogram;

[0135] Truncating the pixels greater than the set contrast threshold and evenly distributing the total pixels of the truncated part to the pixels in all gray levels;

[0136] Performing equalization processing on the region histogram after pixel truncation and distribution processing;

[0137] Performing interpolation smoothing processing on the region histogram after equalization processing through bilinear interpolation.

[0138] An image region cutting unit, which is used to perform feature recognition on the oil and gas storage tank and perform image region cutting processing on the result of image enhancement preprocessing of the oil and gas storage tank, including:

[0139] Performing feature recognition on the result of image enhancement preprocessing of the oil and gas storage tank, and identifying the features of the tank top, the side wall of the tank, and the bottom of the tank;

[0140] Performing image region cutting processing on the oil and gas storage tank image according to the features of the tank top, the side wall of the tank, and the bottom of the tank to obtain the tank top image region, the side wall image region of the tank, and the bottom image region of the tank.

[0141] A temperature map construction unit, which is used to perform coordinate marking processing on the result of image region cutting processing of the oil and gas storage tank and generate a temperature map of the oil and gas storage tank, including:

[0142] Performing coordinate marking processing on the tank top image region, the side wall image region of the tank, and the bottom image region of the tank;

[0143] Obtain the temperature values of each pixel in the top image area of the tank body, the side wall image area of the tank body, and the bottom image area of the tank body;

[0144] Based on the top image area of the tank body, the side wall image area of the tank body, the bottom image area of the tank body that have been processed with coordinate marking and their corresponding pixel temperature values, construct a temperature map of the oil and gas storage tank.

[0145] A temperature anomaly identification unit, which is used to perform temperature anomaly identification processing based on the temperature map of the oil and gas storage tank, and perform temperature anomaly area marking area calculation processing, including:

[0146] Perform temperature anomaly identification processing based on the temperature map of the oil and gas storage tank to identify the temperature anomaly area;

[0147] Calculate the temperature change rate of the temperature anomaly area, and mark the temperature anomaly area with a temperature change rate greater than the set threshold of the temperature change rate, or / and perform a temperature difference processing on the abnormal temperature of the temperature anomaly area and the set threshold of the safe temperature, and perform a temperature anomaly risk marking on the result of the temperature difference processing;

[0148] Extract the shape characteristics of the temperature anomaly area after the marking process, and perform area calculation processing.

[0149] An oil and gas storage tank operation status judgment unit, which is used to judge the transmission safety status of the oil and gas storage tank based on the result of the temperature anomaly area marking area calculation processing, including:

[0150] If the temperature of the marked temperature anomaly area is less than the set threshold of the low temperature, it is judged that there is a low temperature patch at the bottom of the oil and gas storage tank, and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of the temperature anomaly area;

[0151] If the temperature of the marked temperature anomaly area is greater than the set threshold of the safe temperature, it is judged that there is damage to the insulation layer material of the oil and gas storage tank, and the degree of damage to the insulation layer of the oil and gas storage tank is judged according to the area of the temperature anomaly area;

[0152] If the temperature of the marked temperature anomaly area is greater than the set threshold of the high temperature warning temperature, it is judged that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of the temperature anomaly area;

[0153] If the temperature change rate of the marked temperature anomaly area is greater than the set threshold of the temperature change rate, it is judged that there is a leak in the oil and gas storage tank, and the degree of leakage of the oil and gas storage tank is judged according to the area of the temperature anomaly area and the shape characteristics of the temperature anomaly area.

[0154] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0155] The terms "first", "second", "third", etc. in the description of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0156] In several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0157] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0158] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0159] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automated management method for oil and gas storage tanks, characterized in that: The following steps are involved: S101, obtaining infrared image data information of oil and gas storage tanks, and performing oil and gas storage tank image enhancement preprocessing; S102, performing oil and gas storage tank feature recognition on the oil and gas storage tank image enhancement preprocessing result, and performing oil and gas storage tank image region cutting processing; S103, performing coordinate marking processing on the oil and gas storage tank image area cutting processing result, and generating an oil and gas storage tank temperature map; S104, performing temperature anomaly identification processing based on the temperature map of the oil and gas storage tank, and performing temperature anomaly region marking area calculation processing; S105. Based on the calculation result of the marked area of ​​the abnormal temperature region, determine the transmission safety status of the oil and gas storage tank.

2. The oil and gas storage tank automation management method according to claim 1 is characterized in that: The method of obtaining infrared image data information of oil and gas storage tanks and performing oil and gas storage tank image enhancement preprocessing comprises the following steps: The noise frequency band is separated by wavelet transform and the edge of the region is retained by guided filtering to suppress the noise; By setting the contrast threshold, adaptive histogram equalization is performed to achieve local enhancement of temperature difference details in the region and avoid global over-enhancement.

3. The oil and gas storage tank automation management method according to claim 2 is characterized in that: The method of performing adaptive histogram equalization processing by setting a contrast threshold to achieve local enhancement of temperature difference details in a region and avoid global over-enhancement includes the following steps: Segment infrared images of oil and gas storage tanks into several regions; Calculate the pixel grayscale value of each area to generate a regional histogram; Pixels larger than the contrast setting threshold are truncated, and the total pixels of the truncated part are evenly distributed to pixels in all gray levels; Performing equalization processing on the regional histogram processed by pixel truncation and allocation; The equalized regional histogram is interpolated and smoothed by bilinear interpolation.

4. The oil and gas storage tank automation management method according to claim 1 is characterized in that: The method of performing oil and gas storage tank feature recognition on the oil and gas storage tank image enhancement preprocessing result and performing oil and gas storage tank image region cutting processing comprises the following steps: The oil and gas storage tank image enhancement preprocessing results are used to perform oil and gas storage tank feature recognition, and the tank top features, tank side wall features and tank bottom features are identified; The image region of the oil and gas storage tank is cut according to the features of the tank top, the tank side wall and the tank bottom to obtain the tank top image region, the tank side wall image region and the tank bottom image region.

5. The oil and gas storage tank automation management method according to claim 1, characterized in that: The process of performing coordinate marking processing on the oil and gas storage tank image area cutting processing result and generating the oil and gas storage tank temperature map comprises the following steps: Performing coordinate marking processing on the image area on the top of the tank, the image area on the side wall of the tank, and the image area on the bottom of the tank; Obtain the temperature value of each pixel in the tank top image area, the tank side wall image area, and the tank bottom image area; The temperature map of the oil and gas storage tank is constructed based on the coordinate marked image area of ​​the tank top, the tank side wall image area, the tank bottom image area and their corresponding pixel temperature values.

6. The oil and gas storage tank automation management method according to claim 1, characterized in that: The method of performing temperature anomaly identification processing based on the temperature map of the oil and gas storage tank and calculating the marked area of ​​the temperature anomaly region comprises the following steps: Perform temperature anomaly recognition based on the temperature map of oil and gas storage tanks to identify temperature anomaly areas; Calculate the temperature change rate of the temperature abnormal area, and mark the temperature abnormal area whose temperature change rate is greater than the temperature change rate setting threshold, or / and perform temperature difference processing on the abnormal temperature of the temperature abnormal area and the safety temperature setting threshold, and mark the temperature abnormality risk on the temperature difference processing result; The marked temperature anomaly area is subjected to shape feature extraction and area calculation.

7. The oil and gas storage tank automation management method according to claim 1, characterized in that: The method of determining the safe state of oil and gas storage tank transmission based on the result of the temperature abnormality area marking area calculation includes the following steps: If the temperature of the marked temperature abnormal area is lower than the low temperature setting threshold, it is judged that there is a low temperature patch at the bottom of the oil and gas storage tank, and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of ​​the temperature abnormal area; If the temperature of the marked abnormal temperature area is greater than the safety temperature setting threshold, it is judged that the insulation material of the oil and gas storage tank is damaged, and the degree of damage to the insulation layer of the oil and gas storage tank is judged according to the area of ​​the abnormal temperature area; If the temperature of the marked temperature abnormality area is greater than the high temperature warning temperature setting threshold, it is judged that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of ​​the temperature abnormality area; If the temperature change rate of the marked temperature abnormal area is greater than the set threshold of the temperature change rate, it is judged that there is a leak in the oil and gas storage tank. The degree of leakage of the oil and gas storage tank is judged according to the area and shape characteristics of the temperature abnormal area.

8. An automatic management system for oil and gas storage tanks, used to implement the automatic management method for oil and gas storage tanks according to any one of claims 1 to 7, characterized in that: include: A data acquisition unit, used to acquire infrared image data information of oil and gas storage tanks; An image enhancement preprocessing unit, used for performing oil and gas storage tank image enhancement preprocessing on infrared image data information of oil and gas storage tanks; An image region cutting unit is used to perform oil and gas storage tank feature recognition on the oil and gas storage tank image enhancement preprocessing result and perform oil and gas storage tank image region cutting processing; The temperature map construction unit is used to perform coordinate marking processing on the oil and gas storage tank image area cutting processing result and generate the oil and gas storage tank temperature map; The temperature anomaly recognition unit is used to perform temperature anomaly recognition processing based on the temperature map of the oil and gas storage tank, and calculate the marked area of ​​the temperature anomaly area; The oil and gas storage tank operation status judgment unit is used to judge the oil and gas storage tank transmission safety status based on the temperature abnormality area marking area calculation processing result.

9. The oil and gas storage tank automation management system according to claim 8, characterized in that: The image enhancement preprocessing unit performs oil and gas storage tank image enhancement preprocessing on the infrared image data information of the oil and gas storage tank, including: The noise frequency band is separated by wavelet transform and the edge of the region is retained by guided filtering to suppress the noise; Adaptive histogram equalization is performed by setting a contrast threshold to achieve local enhancement of temperature difference details and avoid global over-enhancement; the infrared image of the oil and gas storage tank is divided into several regions; the pixel grayscale value of each region is calculated to generate a regional histogram; pixels greater than the contrast setting threshold are truncated, and the total pixels of the truncated part are evenly distributed to pixels in all gray levels; the regional histogram processed by pixel truncation and distribution is equalized; and the regional histogram processed by equalization is interpolated and smoothed by bilinear interpolation.

10. The oil and gas storage tank automation management system according to claim 8, characterized in that: The oil and gas storage tank operation status judgment unit judges the oil and gas storage tank transmission safety status based on the temperature abnormality area mark area calculation processing result, including: If the temperature of the marked temperature abnormal area is lower than the low temperature setting threshold, it is judged that there is a low temperature patch at the bottom of the oil and gas storage tank, and the degree of water accumulation at the bottom of the oil and gas storage tank is judged according to the area of ​​the temperature abnormal area; If the temperature of the marked abnormal temperature area is greater than the safety temperature setting threshold, it is judged that the insulation material of the oil and gas storage tank is damaged, and the degree of damage to the insulation layer of the oil and gas storage tank is judged according to the area of ​​the abnormal temperature area; If the temperature of the marked temperature abnormality area is greater than the high temperature warning temperature setting threshold, it is judged that there is a fire risk in the oil and gas storage tank, and the degree of fire risk in the oil and gas storage tank is judged according to the area of ​​the temperature abnormality area; If the temperature change rate of the marked temperature abnormal area is greater than the set threshold of the temperature change rate, it is judged that there is a leak in the oil and gas storage tank, and the degree of leakage of the oil and gas storage tank is determined according to the area and shape characteristics of the temperature abnormal area.

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