Methods, apparatus and storage medium for detecting the uniformity of hydrophilic coating on condensers

Abstract

This application provides a method, apparatus, and storage medium for detecting the uniformity of a hydrophilic layer on a condenser. The condenser includes intersecting copper tubes and fins, with multiple copper tubes arranged along a first direction and multiple fins arranged along a second direction, the first and second directions being perpendicular. The method includes: acquiring a top view of the condenser and preprocessing the top view to obtain a preprocessed top view; processing the preprocessed top view to obtain multiple copper tube region images and multiple fin region images, where any one copper tube region image is adjacent to two fin region images; and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube region image. By employing image processing technology, dividing the condenser into regions using copper tubes and fins, and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube region image, this method solves the problem of inaccurate detection of the hydrophilic layer uniformity in existing technologies.

Description

Technical Field

[0001] This application relates to the technical field of detecting the uniformity of the hydrophilic coating on a condenser, and more specifically, to a method, apparatus, storage medium, and air conditioner for detecting the uniformity of the hydrophilic coating on a condenser. Background Technology

[0002] Condensation is common during air conditioner operation. This is because the surface temperature of the condenser is lower than the temperature of water vapor in the air. When water vapor in the air approaches the condenser surface, it condenses into water droplets and adheres to the surface.

[0003] To ensure the normal operation of the air conditioning system, the fins in the condenser are usually coated with a hydrophilic film to prevent condensate from forming bridges between the fins and blocking the airflow. This avoids problems such as a sharp increase in air pressure loss, a decrease in ventilation volume, and noise. Furthermore, if the hydrophilic coating is not properly sprayed and dried, it can cause odors during the air conditioning process.

[0004] Conventional coating inspection involves appearance inspection, coating thickness measurement, adhesion testing, etc., and is mostly carried out manually in conjunction with coating thickness gauges. However, due to the transparent nature of hydrophilic coatings, their color and condition are not easy to observe. In addition, the observation accuracy of the human eye is limited, and small-area coating defects are easily overlooked, leading to false detections. This results in low inspection quality and low efficiency for workers. Summary of the Invention

[0005] The main objective of this application is to provide a method, apparatus, storage medium, and air conditioner for detecting the uniformity of the hydrophilic layer of a condenser, so as to at least solve the problem of the lack of an accurate solution for detecting the uniformity of the hydrophilic layer of a condenser in the prior art.

[0006] To achieve the above objectives, according to one aspect of this application, a method for detecting the uniformity of a hydrophilic layer on a condenser is provided. The condenser includes intersecting copper tubes and fins, wherein a plurality of copper tubes are arranged along a first direction and a plurality of fins are arranged along a second direction, the first direction and the second direction being perpendicular. The method includes: acquiring a top view of the condenser and preprocessing the top view to obtain a preprocessed top view of the condenser; processing the preprocessed top view of the condenser to obtain a plurality of copper tube region maps and a plurality of fin region maps, wherein any one of the copper tube region maps is adjacent to two of the fin region maps; and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube region map.

[0007] Optionally, determining the uniformity of the hydrophilic layer on the associated fin based on the pixel value distribution of the pixels in the copper tube region image includes: obtaining the average pixel value of all pixels in the target copper tube region image, wherein the target copper tube region image is one of a plurality of copper tube region images; if the number of pixels in the target copper tube region image whose pixel value is within a preset difference range is greater than a first preset ratio, determining that the hydrophilic layer on the fin corresponding to the fin region image adjacent to the target copper tube region image is uniformly distributed; if the number of pixels in the target copper tube region image whose pixel value is within a preset difference range is not greater than a second preset ratio, determining that the hydrophilic layer on the fin corresponding to the fin region image adjacent to the target copper tube region image is unevenly distributed.

[0008] Optionally, determining the uniformity of the hydrophilic layer on the associated fin based on the pixel value distribution of the pixels in the copper tube region map includes: obtaining the pixel value difference between two adjacent copper tube region maps arranged along the first direction, wherein the two adjacent copper tube region maps are a first copper tube region map and a second copper tube region map, respectively; determining the uniformity of the hydrophilic layer on the target fin between an adjacent first portion and a second portion based on the magnitude of the pixel value difference, wherein the first portion of the target fin is adjacent to the copper tube corresponding to the first copper tube region map, and the second portion of the target fin is adjacent to the copper tube corresponding to the second copper tube region map.

[0009] Optionally, determining the uniformity of the hydrophilic layer on adjacent first and second portions of the target fin based on the magnitude of the pixel value difference includes: obtaining the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image; if the absolute value of the difference between the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image is less than a preset value, determining that the hydrophilic layer on the first and second portions of the target fin is uniformly distributed; if the absolute value of the difference between the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image is greater than or equal to the preset value, determining that the hydrophilic layer on the first and second portions of the target fin is not uniformly distributed.

[0010] Optionally, the method further includes: constructing a two-dimensional coordinate space, including a first coordinate axis based on the copper tube and a second coordinate axis based on the fins, wherein the interval between two adjacent fins represents the unit spacing of the first coordinate axis, the interval between two adjacent copper tubes represents the unit spacing of the second coordinate axis, and the origin of the two-dimensional coordinate space is a preset position point of the condenser; and obtaining the coordinate positions of each copper tube region map and each fin region map in the two-dimensional coordinate space.

[0011] Optionally, constructing a two-dimensional coordinate space includes: performing contour extraction processing on the pre-processed top view of the condenser to obtain the condenser contour, copper tube edge, and fin edge; performing straight line extraction processing on the copper tube edge and the fin edge to obtain a straight line indicating the copper tube and a straight line indicating the fin; constructing the two-dimensional coordinate space based on the straight lines indicating the copper tube and the straight lines indicating the fin, wherein the first coordinate axis is established based on the straight line indicating the copper tube, and the second coordinate axis is established based on the straight line indicating the fin.

[0012] Optionally, preprocessing the condenser top view to obtain a preprocessed condenser top view includes: performing binarization and noise reduction processing on the condenser top view to obtain the preprocessed condenser top view.

[0013] According to another aspect of this application, an apparatus for detecting the uniformity of a hydrophilic layer on a condenser is provided. The condenser includes intersecting copper tubes and fins, wherein a plurality of the copper tubes are arranged along a first direction and a plurality of the fins are arranged along a second direction, the first direction and the second direction being perpendicular. The apparatus includes: an acquisition and processing unit for acquiring a top view of the condenser and preprocessing the top view to obtain a preprocessed top view of the condenser; a processing unit for processing the preprocessed top view of the condenser to obtain a plurality of copper tube region maps and a plurality of fin region maps, wherein any one of the copper tube region maps is adjacent to two of the fin region maps; and a determination unit for determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube region map.

[0014] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the methods described above for detecting the uniformity of the hydrophilic layer of a condenser.

[0015] According to another aspect of this application, an air conditioner is provided that performs any of the methods described above for detecting the uniformity of the hydrophilic coating on a condenser.

[0016] By applying the technical solution of this application, a top view of the condenser is obtained, and the top view of the condenser is preprocessed to obtain a preprocessed top view of the condenser. The preprocessed top view of the condenser is further processed to obtain multiple copper tube area images and multiple fin area images, wherein any one copper tube area image is adjacent to two fin area images. The uniformity of the hydrophilic coating on the associated fins is determined based on the pixel value distribution of the pixels in the copper tube area image. Based on the image processing method, a rectangular coordinate system is established with the copper tube as the horizontal axis and the fins as the vertical axis. Based on the principle of reflection of the fin coating color in the copper tube area, the uniformity of the hydrophilic coating sprayed on the entire condenser is detected by utilizing the normal distribution and the 3σ criterion. This solves the problem of difficult detection of the hydrophilic coating on both condensers, forming an intelligent automatic detection system. This system is superior to manual detection in terms of recognition efficiency, accuracy, and speed, reducing the input of manpower and material costs and improving production efficiency and work efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A hardware block diagram of a mobile terminal for performing a method for detecting the uniformity of a hydrophilic layer on a condenser, according to an embodiment of this application, is shown.

[0019] Figure 2 A flowchart illustrating a method for detecting the uniformity of a hydrophilic coating on a condenser according to an embodiment of this application is shown.

[0020] Figure 3 A schematic diagram of the structure of a condenser provided according to an embodiment of this application is shown;

[0021] Figure 4 A flowchart is shown illustrating a specific method for detecting the uniformity of a hydrophilic layer on a condenser according to an embodiment of this application;

[0022] Figure 5 A structural block diagram of an apparatus for detecting the uniformity of a hydrophilic layer in a condenser, according to an embodiment of this application, is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Copper tube; 20. Fin. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] As described in the background section, there is a lack of a solution for accurately detecting the uniformity of the hydrophilic layer of a condenser in the prior art. To address the problem of the lack of a solution for accurately detecting the uniformity of the hydrophilic layer of a condenser in the prior art, embodiments of this application provide a method, apparatus, storage medium, and air conditioner for detecting the uniformity of the hydrophilic layer of a condenser.

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a method of detecting the uniformity of a hydrophilic layer in a condenser, according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0031] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the method for detecting the uniformity of the hydrophilic layer of the condenser in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0032] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0033] This embodiment provides a method for detecting the uniformity of the hydrophilic layer of a condenser, which runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although the logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0034] Figure 2 This is a flowchart of a method for detecting the uniformity of a hydrophilic layer on a condenser according to an embodiment of this application. Wherein, as... Figure 3 As shown, the condenser includes copper tubes 10 and fins 20 arranged in a cross configuration, wherein a plurality of copper tubes 10 are arranged along a first direction, and a plurality of fins 20 are arranged along a second direction, the first direction and the second direction being perpendicular to each other. Figure 2 As shown, the method includes the following steps:

[0035] Step S201: Obtain a top view of the condenser, and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0036] Specifically, the top view of the condenser captured by the camera is processed by grayscale conversion and noise reduction. Grayscale conversion simplifies image information and improves image processing speed. Removing noise from the image improves image clarity and quality, making the image easier to analyze and understand, highlighting the main features in the image, and making the image more prominent and vivid.

[0037] Step S202: Process the top view of the pre-processed condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0038] Among them, multiple copper tube area diagrams and multiple fin area diagrams are as follows: Figure 3 As shown.

[0039] Step S203: Determine the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map.

[0040] Specifically, the normal distribution combined with the 3σ criterion is used to analyze pixel values. Based on the color detection of the divided copper tube areas, the distribution of the hydrophilic coating of adjacent fins is detected by calculating the pixel value difference in the blocks of a single copper tube area. The distribution of the hydrophilic coating at the upper and lower positions of the same fin is detected by detecting the pixel value difference between the blocks of adjacent copper tube areas. This achieves the detection of defects in the hydrophilic coating and completes the detection of the uniformity of the hydrophilic coating spraying of the entire condenser fins.

[0041] This embodiment obtains a top view of the condenser and preprocesses it to obtain a preprocessed top view. Further processing of the preprocessed top view yields multiple copper tube area images and multiple fin area images, where any copper tube area image is adjacent to two fin area images. The uniformity of the hydrophilic coating on the associated fins is determined based on the pixel value distribution of the pixels in the copper tube area image. Using an image processing method, a rectangular coordinate system is established with the copper tube as the horizontal axis and the fins as the vertical axis. Based on the principle of reflection of the fin coating color in the copper tube area, and utilizing the normal distribution and the 3σ criterion, the uniformity of the hydrophilic coating sprayed throughout the condenser is detected. This solves the problem of difficult detection of the hydrophilic coating in condensers, forming an intelligent automatic detection system. This system outperforms manual detection in terms of recognition efficiency, accuracy, and speed, reducing labor and material costs and improving production efficiency and work efficiency.

[0042] In the specific implementation process, step S203 above determines the uniformity of the hydrophilic layer on the associated fin based on the pixel value distribution of the pixels in the copper tube region image, including: obtaining the average pixel value of all pixels in the target copper tube region image, wherein the target copper tube region image is one of multiple copper tube region images; if the number of pixels in the target copper tube region image whose pixel value is within a preset difference range is greater than a first preset ratio, it is determined that the hydrophilic layer on the fin corresponding to the fin region image adjacent to the target copper tube region image is uniformly distributed; if the number of pixels in the target copper tube region image whose pixel value is not within a preset difference range is greater than a second preset ratio, it is determined that the hydrophilic layer on the fin corresponding to the fin region image adjacent to the target copper tube region image is unevenly distributed.

[0043] The first preset ratio can be set to 99% or 98%. For example, if the number of pixels in the target copper tube area image whose pixel value is within the preset difference range is greater than 99% of the total number of pixels, it is determined that the hydrophilic layer on the fins corresponding to the fin area image adjacent to the target copper tube area image is uniformly distributed. If the number of pixels in the target copper tube area image whose pixel value is within the preset difference range is less than or equal to 99% of the total number of pixels, it is determined that the hydrophilic layer on the fins corresponding to the fin area image adjacent to the target copper tube area image is unevenly distributed. The preset difference range can be set by calculating the difference between the pixel value and the average pixel value of the target pixel in the target copper tube area image, assuming that the hydrophilic layer on the fins corresponding to the fin area image adjacent to the target copper tube area image is uniformly distributed.

[0044] The second preset ratio can be set to 1% or 2%. For example, if the number of pixels in the target copper tube area image whose pixel value is not within the preset difference range is greater than 1% of the total number of pixels, it is determined that the hydrophilic layer on the fin corresponding to the fin area image adjacent to the target copper tube area image is unevenly distributed; if the number of pixels in the target copper tube area image whose pixel value is not within the preset difference range is less than or equal to 1% of the total number of pixels, it is determined that the hydrophilic layer on the fin corresponding to the fin area image adjacent to the target copper tube area image is evenly distributed.

[0045] This method divides the condenser into multiple equal blocks, records the pixel values ​​and coordinate information of each block from top to bottom, and analyzes the changes in all pixel values ​​using a normal distribution. The 3σ criterion can be used to analyze whether there are outliers in the pixel values. For example, based on the fins, the copper tubes in the condenser are divided into multiple equal blocks from top to bottom, such as region A, region B, etc. Figure 3 The average pixel value of all pixels on the coating in the horizontal region A is μ1. When the pixel value x1 of a certain pixel does not meet the 3σ criterion, it can be determined as an outlier, indicating that there is a defect at the location of the pixel value x1 in region A of the coating, that is, the hydrophilic coating of the two adjacent fins A1 and A2 in region A is not uniform.

[0046] The 3σ criterion states that the value fluctuates within three standard deviations of the mean of a dataset, encompassing the values ​​in most (99.73%) of the dataset. When applied to pixel value detection, the 3σ criterion accurately identifies outliers (anomalies) within a given set of pixels. Of course, other criteria besides the 3σ criterion can be used to determine the uniformity of the hydrophilic coating.

[0047] In particular, the uniformity of the hydrophilic coating is not tested on the parts of the condenser where the copper tubes are exposed.

[0048] Specifically, determining the uniformity of the hydrophilic layer on the associated fin based on the pixel value distribution of the pixels in the copper tube region map includes: obtaining the pixel value difference between two adjacent copper tube region maps arranged along a first direction, wherein the two adjacent copper tube region maps are a first copper tube region map and a second copper tube region map, respectively; determining the uniformity of the hydrophilic layer on the target fin between an adjacent first part and a second part based on the magnitude of the pixel value difference, wherein the first part of the target fin is adjacent to the copper tube corresponding to the first copper tube region map, and the second part of the target fin is adjacent to the copper tube corresponding to the second copper tube region map.

[0049] This method is as follows Figure 3 As shown, the first copper tube area diagram is area A, the second copper tube area diagram is area B, the first part of the target fin is A1, then the second part of the target fin is B1; the first part of the target fin is A2, then the second part of the target fin is B2.

[0050] More specifically, determining the uniformity of the hydrophilic layer on the adjacent first and second parts of the target fin based on the magnitude of the pixel value difference includes: obtaining the average pixel value of the first copper tube area image and the average pixel value of the second copper tube area image; if the absolute value of the difference between the average pixel value of the first copper tube area image and the average pixel value of the second copper tube area image is less than a preset value, determining that the hydrophilic layer on the first and second parts of the target fin is uniformly distributed; if the absolute value of the difference between the average pixel value of the first copper tube area image and the average pixel value of the second copper tube area image is greater than or equal to a preset value, determining that the hydrophilic layer on the first and second parts of the target fin is unevenly distributed.

[0051] This method determines whether the hydrophilic coating on the corresponding fin is evenly distributed by determining the relationship between the absolute value of the difference between the average pixel value of the first copper tube region map and the average pixel value of the second copper tube region map and a preset value. For example, the average pixel value of the first copper tube region A1 is 10, the average pixel value of the second copper tube region A2 is 20, and the preset value is 5. It can be seen that the difference between the average pixel value of the first copper tube region A1 and the average pixel value of the second copper tube region A2 is greater than the preset value, indicating that the hydrophilic layer on the first part and the second part of the target fin is not evenly distributed. The average pixel value of the first copper tube region A1 is equal to the ratio of the gray value of the first copper tube region A1 to the total number of pixels in the first copper tube region A1.

[0052] Furthermore, the method also includes: constructing a two-dimensional coordinate space, including a first coordinate axis based on copper tubes and a second coordinate axis based on fins, wherein the interval between two adjacent fins represents the unit spacing of the first coordinate axis, the interval between two adjacent copper tubes represents the unit spacing of the second coordinate axis, and the origin of the two-dimensional coordinate space is a preset position point of the condenser; and obtaining the coordinate positions of each copper tube area map and each fin area map in the two-dimensional coordinate space.

[0053] Furthermore, a two-dimensional coordinate space is constructed, including: extracting the contour of the pre-processed condenser top view to obtain the condenser contour, copper tube edge, and fin edge; extracting straight lines from the copper tube edge and fin edge to obtain straight lines representing the copper tube and fin; and constructing a two-dimensional coordinate space based on the straight lines representing the copper tube and fin, wherein the first coordinate axis is established based on the straight lines representing the copper tube, and the second coordinate axis is established based on the straight lines representing the fin.

[0054] The condenser typically consists of copper tubes and aluminum fins. The copper tubes are interspersed within the fins, forming a mesh-like structure to increase surface area and improve heat exchange efficiency. Edge detection algorithms can be used to detect the edges of the condenser and all its copper tubes and fins. Edge extraction algorithms can be used to extract the edges into straight lines. Edge detection algorithms can employ Canny's algorithm, deep learning object recognition algorithms, and traditional contour extraction algorithms, while edge extraction algorithms can utilize the Hough transform algorithm. Figure 3 As shown, a rectangular coordinate system is established with the copper tube 10 as the horizontal axis, the fins 20 inserted in it as the vertical axis, the distance between the copper tubes 10 as the vertical axis spacing, the interval between the fins 20 as the horizontal axis spacing, and the lower left of the condenser as the origin.

[0055] Specifically, the condenser top view is preprocessed to obtain a preprocessed condenser top view, including binarization and noise reduction of the condenser top view.

[0056] Binarization is a method of converting an image into one containing only two pixel values. Typically, pixel values ​​are thresholded; values ​​greater than the threshold are assigned one value (e.g., 255), and values ​​less than the threshold are assigned another value (e.g., 0). This achieves the effect of converting the image into one with only two pixel values.

[0057] This method simplifies image information, improves image processing speed, and enhances image clarity and quality by binarizing and denoising the top view of the condenser. This makes the image easier to analyze and understand, highlights the main features in the image, and makes the image more prominent and vivid.

[0058] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the method for detecting the uniformity of the hydrophilic layer of a condenser will be described in detail below with reference to specific embodiments.

[0059] To address the inefficiency of condenser coating inspection, which relies on manual labor and requires measuring tools, this embodiment proposes a specific method for detecting the uniformity of the hydrophilic coating on condensers. Figure 4 As shown, it includes the following:

[0060] First, a top-down view of the condenser captured by the camera is obtained. This view is then processed for grayscale conversion and noise reduction. Next, a Cartesian coordinate system is established with the copper tubes as the axis. The condenser typically consists of copper tubes and aluminum fins, with the copper tubes interspersed within the fins, forming a mesh-like structure to increase surface area and improve heat exchange efficiency. The Canny algorithm can be used to detect the condenser and the edges of all its copper tubes and fins. The Hough transform can be used to extract the edges as straight lines. A Cartesian coordinate system is established with the copper tubes as the horizontal axis, the interspersed fins as the vertical axis, the distance between the copper tubes as the vertical axis spacing, and the interval between the fins as the horizontal axis spacing. The lower left corner of the condenser is the origin.

[0061] After the hydrophilic coating is applied, the coating on the fins will reflect light onto the copper tube due to light refraction, such as... Figure 3 The color of region A is the result of the combined effect of regions A1 and A2. When the coating is uniformly distributed, the light reflected from the copper tube, i.e., the gloss, is also uniform (or the pixel value error within the region should be within an acceptable small range). That is, by detecting limited local areas A, B, etc., of the copper tube, the coating performance of all areas of the fin can be reflected. This allows for the detection of the entire fin's coating performance with fewer samples, improving detection efficiency. Given that the hydrophilic coating itself is transparent and difficult to observe, and the fin itself is very thin, this invention selects the copper tube as the detection target, enhancing the color contrast of the hydrophilic coating. The divided copper tube regions A, B, etc., better identify defects in the hydrophilic coating. A schematic diagram of the fin and copper tube structure is shown below. Figure 2 As shown, the logical order of the detection is as follows: first, analyze from left to right. If the color of a single copper tube is uniform from left to right, such as the uniform color of area A, it can reflect that the coating between two adjacent fins is uniform. Then, analyze from top to bottom. If the color of two adjacent copper tubes is uniform, such as the uniform color of areas A and B, it can reflect that the coating at different positions of the fins is uniform.

[0062] The condenser is divided into multiple equal blocks. The pixel values ​​and coordinate information of each block are recorded sequentially from top to bottom. A normal distribution is used to analyze the changes in all pixel values, and the 3σ criterion is used to analyze whether there are outliers. For example, the copper tubes in the condenser are divided into multiple equal blocks A, B, etc., from top to bottom according to the fins (e.g., ...). Figure 3 As shown), Figure 2 The average pixel value of all pixels on the coating in the horizontal region A is μ1. When the pixel value x1 of a certain pixel does not meet the 3σ criterion, it can be determined as an outlier, indicating that there is a defect at the location of the pixel value x1 in region A of the coating, that is, the hydrophilic coating of the two adjacent fins A1 and A2 in region A is not uniform.

[0063] The coating performance of the upper and lower parts of the same fin is then tested by comparing the average pixel values ​​of the longitudinal region. For example... Figure 3 As shown, the average pixel value of all pixels on the coating in region A is μ1, and the average pixel value of all pixels on the coating in region B is μ2. When the difference between μ1 and μ2 is large, it indicates that the overall color of the two regions A and B is not uniform. It can be considered that the coating distribution on part A1 of region A is different from that on part B1 of region B, that is, the hydrophilic coating distribution on the upper and lower parts of the same fin is not uniform.

[0064] Based on the defect detection results, the defects in the condenser coating are reported, and the defect detection results are output, thus completing the defect detection of the condenser coating.

[0065] This embodiment uses copper tubes for background enhancement based on the acquired images. A two-dimensional Cartesian coordinate system is established by dividing the condenser in the image into regions with the copper tubes as the horizontal axis and the interspersed fins as the vertical axis. The distance between the copper tubes is used as the vertical axis spacing, and the condenser is divided into multiple equal blocks from top to bottom based on this standard. The pixel values ​​and positions of each pixel are recorded. The recorded pixel values ​​are analyzed using a normal distribution combined with the 3σ criterion. Based on color detection of the divided copper tube regions, the distribution of the hydrophilic coating on adjacent fins is detected by calculating the pixel value differences within each equal block of a single copper tube region. The distribution of the hydrophilic coating on the same fin at different vertical positions is detected by detecting the pixel value differences between equal blocks of adjacent copper tube regions. This achieves defect detection of the hydrophilic coating and completes the detection of the uniformity of the hydrophilic coating spraying on the entire condenser fins. This solves the problem of difficulty in observing and detecting the hydrophilic coating and the risk of false detection in manual inspection, thus improving the detection accuracy. This embodiment utilizes machine vision technology to process images captured by a camera. Based on pixel distribution and the mean difference in pixel values ​​within a region, it analyzes the performance of the hydrophilic coating spraying on the condenser, forming an intelligent automated performance inspection that reduces reliance on manual labor and improves inspection efficiency. Based on image processing, a rectangular coordinate system is established with the copper tube as the horizontal axis and the fins as the vertical axis. Utilizing the principle of reflection of the fin coating color in the copper tube area, and employing the normal distribution and the 3σ criterion, the uniformity of the hydrophilic coating spraying across the entire condenser is detected. This solves the problem of difficult detection of the hydrophilic coating on both condensers, forming an intelligent automated inspection system. This system outperforms manual inspection in terms of recognition efficiency, accuracy, and speed, reducing labor and material costs and improving production efficiency and work productivity.

[0066] This application also provides an apparatus for detecting the uniformity of the hydrophilic layer of a condenser. It should be noted that the apparatus for detecting the uniformity of the hydrophilic layer of a condenser in this application can be used to execute the method for detecting the uniformity of the hydrophilic layer of a condenser provided in this application. This apparatus is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0067] The following describes the apparatus for detecting the uniformity of the hydrophilic coating of a condenser provided in the embodiments of this application.

[0068] Figure 5 This is a schematic diagram of an apparatus for detecting the uniformity of the hydrophilic coating of a condenser according to an embodiment of this application. The condenser includes copper tubes and fins arranged in a cross configuration, wherein a plurality of copper tubes are arranged along a first direction and a plurality of fins are arranged along a second direction, the first direction and the second direction being perpendicular to each other, as shown below. Figure 5 As shown, the device includes:

[0069] The acquisition and processing unit 51 is used to acquire a top view of the condenser and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0070] Specifically, the top view of the condenser captured by the camera is processed by grayscale conversion and noise reduction. Grayscale conversion simplifies image information and improves image processing speed. Removing noise from the image improves image clarity and quality, making the image easier to analyze and understand, highlighting the main features in the image, and making the image more prominent and vivid.

[0071] Processing unit 52 is used to process the pre-processed top view of the condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0072] Among them, multiple copper tube area diagrams and multiple fin area diagrams are as follows: Figure 3 As shown.

[0073] The determining unit 53 is used to determine the uniformity of the hydrophilic layer on the associated fin based on the pixel value distribution of the pixels in the copper tube area map.

[0074] Specifically, the normal distribution combined with the 3σ criterion is used to analyze pixel values. Based on the color detection of the divided copper tube areas, the distribution of the hydrophilic coating of adjacent fins is detected by calculating the pixel value difference in the blocks of a single copper tube area. The distribution of the hydrophilic coating at the upper and lower positions of the same fin is detected by detecting the pixel value difference between the blocks of adjacent copper tube areas. This achieves the detection of defects in the hydrophilic coating and completes the detection of the uniformity of the hydrophilic coating spraying of the entire condenser fins.

[0075] In this embodiment, an acquisition and processing unit is used to acquire a top view of the condenser and preprocess the top view to obtain a preprocessed top view of the condenser; a processing unit is used to process the preprocessed top view of the condenser to obtain multiple copper tube area images and multiple fin area images, wherein any copper tube area image is adjacent to two fin area images; a determination unit is used to determine the uniformity of the hydrophilic coating on the associated fins based on the pixel value distribution of the pixels in the copper tube area image. Based on the image processing method, a rectangular coordinate system is established with the copper tube as the horizontal axis and the fins as the vertical axis. Based on the principle of reflection of the fin coating color in the copper tube area, the uniformity of the hydrophilic coating spraying of the entire condenser is detected by utilizing the normal distribution and the 3σ criterion. This solves the problem of difficult detection of the hydrophilic coating of the condenser, forming an intelligent automatic detection system. This system is superior to manual detection in terms of recognition efficiency, accuracy, and speed, reducing the input of manpower and material resources, and improving production efficiency and work efficiency.

[0076] As an optional solution, the determining unit includes a first acquisition module, a first determining module, and a second determining module. The first acquisition module is used to acquire the average pixel value of all pixels in the target copper tube region image, where the target copper tube region image is one of multiple copper tube region images. The first determining module is used to determine that the hydrophilic layer on the fins corresponding to the fin region image adjacent to the target copper tube region image is uniformly distributed when the proportion of pixels in the target copper tube region image whose pixel value is within a preset difference range is greater than a first preset proportion. The second determining module is used to determine that the hydrophilic layer on the fins corresponding to the fin region image adjacent to the target copper tube region image is unevenly distributed when the proportion of pixels in the target copper tube region image whose pixel value is not within a preset difference range is greater than a second preset proportion.

[0077] The first preset ratio can be set to 99% or 98%, and the second preset ratio can be set to 1% or 2%.

[0078] In one optional scheme, the determining unit further includes a second acquisition module and a third determining module; the second acquisition module is used to acquire the pixel value difference between two adjacent copper tube region images arranged along the first direction, wherein the two adjacent copper tube region images are a first copper tube region image and a second copper tube region image, respectively; the third determining module is used to determine the uniformity of the hydrophilic layer of the adjacent first part and second part on the target fin according to the magnitude of the pixel value difference, wherein the first part of the target fin is adjacent to the copper tube corresponding to the first copper tube region image, and the second part of the target fin is adjacent to the copper tube corresponding to the second copper tube region image.

[0079] Specifically, such as Figure 3 As shown, the first copper tube area diagram is area A, the second copper tube area diagram is area B, the first part of the target fin is A1, then the second part of the target fin is B1; the first part of the target fin is A2, then the second part of the target fin is B2.

[0080] In one optional scheme, the third determining module includes an acquisition submodule, a first determining submodule, and a second determining submodule. The acquisition submodule is used to acquire the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image. The first determining submodule is used to determine that the hydrophilic layer distribution on the first and second parts of the target fin is uniform when the absolute value of the difference between the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image is less than a preset value. The second determining submodule is used to determine that the hydrophilic layer distribution on the first and second parts of the target fin is uneven when the absolute value of the difference between the average pixel value of the first copper tube region image and the average pixel value of the second copper tube region image is greater than or equal to a preset value.

[0081] The uniformity of the hydrophilic coating on the corresponding fin is determined by analyzing the relationship between the absolute value of the difference between the average pixel value of the first copper tube region map and the average pixel value of the second copper tube region map and a preset value.

[0082] In one optional embodiment, the device further includes a construction unit and an acquisition unit; the construction unit is used to construct a two-dimensional coordinate space, including a first coordinate axis based on copper tubes and a second coordinate axis based on fins, the interval between two adjacent fins represents the unit spacing of the first coordinate axis, the interval between two adjacent copper tubes represents the unit spacing of the second coordinate axis, and the origin of the two-dimensional coordinate space is a preset position point of the condenser; the acquisition unit is used to acquire the coordinate positions of each copper tube area map and each fin area map in the two-dimensional coordinate space.

[0083] An optional scheme, the construction unit includes a first extraction processing module, a second extraction processing module, and a construction module; the first extraction processing module is used to perform contour extraction processing on the pre-processed top view of the condenser to obtain the condenser contour, copper tube edge, and fin edge; the second extraction processing module is used to perform straight line extraction processing on the copper tube edge and fin edge to obtain a straight line showing the copper tube and a straight line showing the fin; the construction module is used to construct a two-dimensional coordinate space based on the straight lines showing the copper tube and the straight lines showing the fin, wherein the first coordinate axis is established based on the straight line of the copper tube, and the second coordinate axis is established based on the straight line of the fin.

[0084] The condenser typically consists of copper tubes and aluminum fins. The copper tubes are interspersed within the fins, forming a mesh-like structure to increase surface area and improve heat exchange efficiency. The Canny algorithm is used to detect the condenser, as well as the edges of all its copper tubes and fins. The Hough transform is then used to extract the edges as straight lines. Figure 3 As shown, a rectangular coordinate system is established with the copper tube 10 as the horizontal axis, the fins 20 inserted in it as the vertical axis, the distance between the copper tubes 10 as the vertical axis spacing, the interval between the fins 20 as the horizontal axis spacing, and the lower left of the condenser as the origin.

[0085] In one alternative approach, the processing unit includes a processing module for performing binarization and noise reduction processing on the condenser top view to obtain a preprocessed condenser top view.

[0086] Specifically, by performing binarization and noise reduction on the top view of the condenser, the image information can be simplified, the image processing speed can be improved, and the image clarity and quality can be enhanced, making the image easier to analyze and understand, highlighting the main features in the image, and making the image more prominent and vivid.

[0087] The device for detecting the uniformity of the hydrophilic coating on a condenser includes a processor and a memory. The aforementioned acquisition unit, processing unit, and determination unit are all stored as program units in the memory, and the processor executes these program units to achieve the corresponding functions. All of the above modules are located in the same processor; alternatively, the modules may be located in different processors in any combination.

[0088] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can address the current lack of a precise method for detecting the uniformity of the hydrophilic layer in condensers.

[0089] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0090] This invention provides an air conditioner that performs any of the methods described above for detecting the uniformity of the hydrophilic coating on the condenser.

[0091] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the method for detecting the uniformity of the hydrophilic layer of a condenser.

[0092] Specifically, methods for detecting the uniformity of the hydrophilic layer on a condenser include:

[0093] Step S201: Obtain a top view of the condenser, and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0094] Step S202: Process the top view of the pre-processed condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0095] Step S203: Determine the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map.

[0096] This invention provides a processor for running a program, wherein the program executes the method for detecting the uniformity of the hydrophilic layer of a condenser.

[0097] Specifically, methods for detecting the uniformity of the hydrophilic layer on a condenser include:

[0098] Step S201: Obtain a top view of the condenser, and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0099] Step S202: Process the top view of the pre-processed condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0100] Step S203: Determine the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map.

[0101] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0102] Step S201: Obtain a top view of the condenser, and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0103] Step S202: Process the top view of the pre-processed condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0104] Step S203: Determine the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map.

[0105] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0106] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0107] Step S201: Obtain a top view of the condenser, and preprocess the top view of the condenser to obtain a preprocessed top view of the condenser.

[0108] Step S202: Process the top view of the pre-processed condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any copper tube area map is adjacent to two fin area maps.

[0109] Step S203: Determine the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map.

[0110] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0111] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0112] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0113] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0114] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0115] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0116] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0117] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic tape and disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0118] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0119] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0120] 1) This application discloses a method for detecting the uniformity of a hydrophilic layer on a condenser. The condenser includes intersecting copper tubes and fins, wherein multiple copper tubes are arranged along a first direction and multiple fins are arranged along a second direction, the first and second directions being perpendicular. The method includes: acquiring a top view of the condenser and preprocessing the top view to obtain a preprocessed top view of the condenser; processing the preprocessed top view of the condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any one copper tube area map is adjacent to two fin area maps; and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map. By employing image processing technology, dividing the condenser into regions using copper tubes and fins, and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map, this method solves the problem of inaccurate detection of the hydrophilic layer uniformity of condensers in existing technologies.

[0121] 2) This application discloses an apparatus for detecting the uniformity of a hydrophilic layer on a condenser. The condenser includes intersecting copper tubes and fins, wherein multiple copper tubes are arranged along a first direction and multiple fins are arranged along a second direction, the first and second directions being perpendicular. The apparatus includes: an acquisition and processing unit for acquiring a top view of the condenser and preprocessing the top view to obtain a preprocessed top view of the condenser; a processing unit for processing the preprocessed top view of the condenser to obtain multiple copper tube area maps and multiple fin area maps, wherein any one copper tube area map is adjacent to two fin area maps; and a determination unit for determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map. By employing image processing technology, dividing the condenser into regions using copper tubes and fins, and determining the uniformity of the hydrophilic layer on the associated fins based on the pixel value distribution of the pixels in the copper tube area map, the problem of inaccurate detection of the hydrophilic layer uniformity of the condenser in the prior art is solved.

[0122] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method of detecting uniformity of a hydrophilic layer of a condenser, characterized by, The condenser comprises copper tubes and fins arranged in a cross manner, wherein a plurality of the copper tubes are arranged along a first direction, a plurality of the fins are arranged along a second direction, the first direction and the second direction are perpendicular, and the condenser comprises: An overhead view of a condenser is obtained, and the overhead view of the condenser is preprocessed to obtain a preprocessed overhead view of the condenser; The preprocessed overhead view of the condenser is processed to obtain a plurality of copper tube region graphs and a plurality of fin region graphs, wherein any one of the copper tube region graphs is adjacent to two of the fin region graphs; The uniformity of the hydrophilic layer on the fins associated with the pixel value distribution of the pixel points of the copper tube region graph is determined; The uniformity of the hydrophilic layer on the fins associated with the pixel value distribution of the pixel points of the copper tube region graph is determined, comprising: The variation of all pixel values is analyzed using normal distribution, whether there is an abnormal value of pixel value is analyzed using 3σ criterion, the distribution of adjacent fin hydrophilic coating is detected by calculating the pixel value difference in a single copper tube region block, and the distribution of the same fin hydrophilic coating at upper and lower positions is detected by detecting the pixel value difference between adjacent copper tube region blocks, so as to realize the detection of the hydrophilic coating spraying uniformity of the fins of the condenser.

2. The method of claim 1, wherein, The distribution of adjacent fin hydrophilic coating is detected by calculating the pixel value difference in a single copper tube region block, comprising: The pixel value mean of all pixel points of a target copper tube region graph is obtained, the target copper tube region graph being one of the plurality of copper tube region graphs, wherein the target copper tube region graph represents the single copper tube region block; In a case where the proportion of the number of pixel points whose pixel value difference from the pixel value mean is within a preset difference value range to the total number of pixel points in the target copper tube region graph is greater than a first preset proportion, it is determined that the hydrophilic layer on the fins corresponding to the fin region graphs adjacent to the target copper tube region graph is uniformly distributed; In a case where the proportion of the number of pixel points whose pixel value difference from the pixel value mean is not within the preset difference value range to the total number of pixel points in the target copper tube region graph is greater than a second preset proportion, it is determined that the hydrophilic layer on the fins corresponding to the fin region graphs adjacent to the target copper tube region graph is not uniformly distributed.

3. The method of claim 1, wherein, The distribution of the same fin hydrophilic coating at upper and lower positions is detected by detecting the pixel value difference between adjacent copper tube region blocks, comprising: The pixel value difference of two adjacent copper tube region graphs arranged along the first direction is obtained, wherein the two adjacent copper tube region graphs are a first copper tube region graph and a second copper tube region graph, and the two adjacent copper tube region graphs arranged along the first direction represent the upper and lower adjacent copper tube region blocks; The uniformity of the hydrophilic layer of a first part and a second part adjacent to a target fin is determined according to the size of the pixel value difference, wherein the first part of the target fin is adjacent to a copper tube corresponding to the first copper tube region graph, and the second part of the target fin is adjacent to a copper tube corresponding to the second copper tube region graph.

4. The method of claim 3, wherein, Determine uniformity of the hydrophilic layer on the first part and the second part of the target fin according to the size of the pixel value difference, including: Obtain the pixel value mean of the first copper pipe area graph and the pixel value mean of the second copper pipe area graph; In the case that the absolute value of the difference between the pixel value mean of the first copper pipe area graph and the pixel value mean of the second copper pipe area graph is less than a preset value, it is determined that the hydrophilic layer on the first part and the second part of the target fin is uniformly distributed; In the case that the absolute value of the difference between the pixel value mean of the first copper pipe area graph and the pixel value mean of the second copper pipe area graph is greater than or equal to the preset value, it is determined that the hydrophilic layer on the first part and the second part of the target fin is not uniformly distributed.

5. The method of claim 1, wherein, The method further includes: Construct a two-dimensional coordinate space, including a first coordinate axis based on the copper pipe and a second coordinate axis based on the fin, the interval between two adjacent fins representing the unit interval of the first coordinate axis, the interval between two adjacent copper pipes representing the unit interval of the second coordinate axis, and the origin of the two-dimensional coordinate space being a preset position point of the condenser; Obtain the coordinate position of each copper pipe area graph and each fin area graph in the two-dimensional coordinate space.

6. The method of claim 5, wherein, Construct a two-dimensional coordinate space, including: Perform contour extraction processing on the pretreated condenser top view to obtain a condenser contour, a copper pipe edge and a fin edge; Perform straight line extraction processing on the copper pipe edge and the fin edge to obtain copper pipe straight lines and fin straight lines; Based on the copper pipe straight lines and the fin straight lines, construct the two-dimensional coordinate space, wherein the first coordinate axis is established based on the copper pipe straight lines, and the second coordinate axis is established based on the fin straight lines.

7. The method according to any one of claims 1 to 6, characterized in that, Pretreat the condenser top view to obtain a pretreated condenser top view, including: Perform binaryzation processing and denoising processing on the condenser top view to obtain the pretreated condenser top view.

8. An apparatus for detecting uniformity of a hydrophilic layer of a condenser, characterized by, A condenser includes cross-arranged copper pipes and fins, wherein a plurality of the copper pipes are arranged along a first direction, a plurality of the fins are arranged along a second direction, the first direction and the second direction are perpendicular, including: An acquisition processing unit is configured to acquire a condenser top view and pretreat the condenser top view to obtain a pretreated condenser top view; A processing unit is configured to process the pretreated condenser top view to obtain a plurality of copper pipe area graphs and a plurality of fin area graphs, wherein any one of the copper pipe area graphs is adjacent to two of the fin area graphs; A determination unit is configured to determine the uniformity of the hydrophilic layer on the fins associated with the copper pipe area graph according to the pixel value distribution of the pixel points of the copper pipe area graph. The determination unit is specifically configured to analyze the change of all pixel values using normal distribution, analyze whether there is an abnormal value in the pixel value using a 3σ criterion, detect the distribution of the hydrophilic coating of adjacent fins by calculating the pixel value difference in a single copper pipe region block, and detect the distribution of the hydrophilic coating at upper and lower positions of the same fin by detecting the pixel value difference between upper and lower adjacent copper pipe region blocks, so as to realize the detection of the hydrophilic coating spraying uniformity of the fins of the condenser.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein the program controls the device where the computer readable storage medium is located to execute the method for detecting the uniformity of the hydrophilic layer of the condenser according to any one of claims 1 to 7 when the program is running.

10. An air conditioner characterized by comprising: The air conditioner executes the method for detecting the uniformity of the hydrophilic layer of the condenser according to any one of claims 1 to 7.

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