CN113888469A - Method and device for determining heat exchanger fault information - Google Patents
Method and device for determining heat exchanger fault information Download PDFInfo
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Abstract
The invention discloses a method and a device for determining heat exchanger fault information. Wherein, the method comprises the following steps: acquiring a first water flow picture and a second water flow picture of a heat exchanger interface, wherein the first water flow picture and the second water flow picture are pictures acquired at different moments; when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, a temperature distribution graph in the operation process of the heat exchanger is obtained, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image; fault information for the heat exchanger is determined based on the temperature profile. The invention solves the technical problems that the plate channel of the plate heat exchanger in the related art is easy to block, the blocking efficiency is low through manual detection, and potential safety hazards exist.
Description
Technical Field
The invention relates to the field of household appliance fault detection, in particular to a method and a device for determining heat exchanger fault information.
Background
The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of corrugated heat transfer metal sheets at certain intervals, thin rectangular channels are formed among the plates of the heat exchanger, and heat exchange is carried out among the plates. The plate heat exchanger has the characteristics of small volume, high heat transfer efficiency, flexible assembly, low metal consumption, low heat loss and the like, and also has the advantages of light weight, low price, convenient manufacture, long service life and the like. However, the plate heat exchanger has narrow channels between plates, generally only 2-5mm, and when the heat exchange medium contains large particles or fibrous substances, the channels between plates are easily blocked. There are some problems in the plate heat exchanger testing process at present such as: the treatment after the blockage cannot accurately position the cleaning position. If there is intractable impurity to block up, wash unable dredging pipe with the water pump, perhaps when more than one water inlet of plate heat exchanger, whole washing wastes water resource, the waste time. The problem of artificial detection efficiency. The manual recording and judgment is time-consuming and labor-consuming. The safety problem. Potential safety hazards such as scalding and burning can be avoided in the manual detection process. The problem of accuracy. The position of these blockages cannot be visually observed by personnel in the interior of the plate heat exchanger.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining heat exchanger fault information, which are used for at least solving the technical problems that channels between plates of a plate heat exchanger in the related art are easy to block, the blocking efficiency is low through manual detection, and potential safety hazards exist.
According to an aspect of an embodiment of the present invention, there is provided a method for determining heat exchanger fault information, including: acquiring a first water flow picture and a second water flow picture of a heat exchanger interface, wherein the first water flow picture and the second water flow picture are pictures acquired at different moments; when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, acquiring a temperature distribution graph in the operation process of the heat exchanger, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image; determining fault information for the heat exchanger based on the temperature profile.
Optionally, before determining that the difference in the degree of blur between the first water flow rate picture and the second water flow rate image is greater than a first predetermined threshold, the method further comprises: respectively acquiring a first fuzzy degree and a second fuzzy degree of the first water flow image and the second water flow image by using a preset algorithm; and calculating the difference between the first fuzzy degree and the second fuzzy degree and taking an absolute value to obtain the fuzzy degree difference.
Optionally, the preset algorithm includes one of: laplace algorithm, floating point algorithm.
Optionally, determining fault information of the heat exchanger based on the temperature profile includes: extracting RGB difference values in the temperature distribution diagram, wherein the RGB difference values are the difference values between the RGB value abnormal area and other areas in the temperature distribution diagram; extracting contour information in the temperature distribution diagram, wherein the contour information is a difference ratio of upper and lower width ranges of a working temperature runner; and determining the fault information according to the RGB difference value and the contour information.
Optionally, determining the fault information according to the RGB difference and the contour information includes: determining whether a first target area exists in the temperature distribution map, wherein the first target area is an area in the temperature distribution map, the RGB difference value of which is greater than a second preset threshold value, and the second preset threshold value is an RGB preset difference value threshold value; determining whether a second target area exists in the temperature distribution map, wherein the second target area is an area in the temperature distribution map, in which the profile information is greater than a third preset threshold value, and the third preset threshold value is a preset profile information threshold value; in the event that it is determined that the first target region and the second target region exist, determining whether a blockage of the water inlet has occurred; and under the condition that the water inlet is determined to be blocked, determining the fault information comprising the fault position according to the position information of the first target area and the position information of the second target area.
Optionally, in the case where it is determined that the first target region exists and the second target region exists, determining whether the water inlet is blocked includes: receiving the fault information; after the fault information is determined to exceed a fourth preset threshold value after being received, judging that a blocking condition occurs; and the fourth preset threshold is a preset threshold of time after the fault information is received.
Optionally, after determining the fault information of the heat exchanger based on the temperature profile, the method further comprises: and controlling a water pump to clean the fault position of the heat exchanger.
According to another aspect of the embodiments of the present invention, there is also provided a device for determining heat exchanger fault information, including: the first acquisition module is used for acquiring a first water flow picture and a second water flow picture of a heat exchanger interface, wherein the first water flow picture and the second water flow picture are pictures acquired at different moments; the second obtaining module is used for obtaining a temperature distribution graph in the operation process of the heat exchanger when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image; a determination module to determine fault information for the heat exchanger based on the temperature profile.
Optionally, the apparatus further comprises: a third obtaining module, configured to obtain a first blurring degree and a second blurring degree of the first water flow rate picture and the second water flow rate picture by using a preset algorithm, respectively, before determining that a difference value between the blurring degrees of the first water flow rate picture and the second water flow rate picture is greater than a first predetermined threshold; and the calculation module is used for calculating the difference value between the first fuzzy degree and the second fuzzy degree and taking an absolute value to obtain the fuzzy degree difference value.
Optionally, the preset algorithm includes one of: laplace algorithm, floating point algorithm.
Optionally, the determining module includes: the first extraction unit is used for extracting RGB difference values in the temperature distribution diagram, wherein the RGB difference values are the difference values between an RGB value abnormal area and other areas in the temperature distribution diagram; the second extraction unit is used for extracting profile information in the temperature distribution diagram, wherein the profile information is a difference ratio of upper and lower width ranges of the working temperature flow channel; and the determining unit is used for determining the fault information according to the RGB difference value and the contour information.
Optionally, the determining unit includes: the first determining subunit is configured to determine whether a first target region exists in the temperature distribution map, where the first target region is a region in the temperature distribution map where the RGB difference is greater than a second preset threshold, where the second preset threshold is an RGB preset difference threshold; a second determining subunit, configured to determine whether a second target region exists in the temperature distribution map, where the second target region is a region in the temperature distribution map where the profile information is greater than a third preset threshold, where the third preset threshold is a preset profile information threshold; a third determining subunit, configured to determine whether the water inlet is blocked if it is determined that the first target region and the second target region exist; and the fourth determining subunit is configured to determine, when it is determined that the water inlet is blocked, the fault information including a fault location according to the location information of the first target area and the location information of the second target area.
Optionally, the third determining subunit includes: a receiving subunit, configured to receive the fault information; the judging subunit is used for judging that a blocking condition occurs after the fault information is determined to be received and exceeds a fourth preset threshold value; and the fourth preset threshold is a preset threshold of time after the fault information is received.
Optionally, the apparatus further comprises: and the control module is used for controlling the water pump to clean the fault position of the heat exchanger after determining the fault information of the heat exchanger based on the temperature distribution diagram.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored computer program, wherein when the computer program is executed by a processor, the computer-readable storage medium is controlled by an apparatus to execute the method for determining heat exchanger fault information according to any one of the above.
According to another aspect of the embodiment of the present invention, there is also provided a processor for executing a computer program, wherein the computer program executes to execute the method for determining heat exchanger fault information according to any one of the above methods.
In the embodiment of the invention, a first water flow picture and a second water flow picture of a heat exchanger interface are obtained, wherein the first water flow picture and the second water flow picture are pictures collected at different moments; when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, a temperature distribution graph in the operation process of the heat exchanger is obtained, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image; fault information for the heat exchanger is determined based on the temperature profile. According to the method for determining the heat exchanger fault information, the purpose of determining the fault information of the heat exchanger based on the acquired water flow image and temperature distribution diagram of the heat exchanger interface is achieved, the technical effect of improving the fault detection efficiency of the plate heat exchanger is achieved, and the technical problems that channels between plates of the plate heat exchanger are easy to block, manual detection of blocking is low in blocking efficiency and potential safety hazards exist in the related technology are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of determining heat exchanger fault information according to an embodiment of the present invention;
fig. 2 is a schematic view of a plate heat exchanger structure according to an embodiment of the invention;
FIG. 3 is a schematic illustration of a thermal imaging temperature profile according to an embodiment of the invention;
FIG. 4 is a flow chart diagram of a method of implementing heat exchanger fault information determination in accordance with an embodiment of the present invention;
fig. 5 is a schematic diagram of a heat exchanger failure information determination apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method of determining heat exchanger failure information, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions and that, although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that presented herein.
Fig. 1 is a flowchart of a method for determining heat exchanger failure information according to an embodiment of the present invention, and as shown in fig. 1, the method for determining heat exchanger failure information includes the following steps:
step S102, a first water flow picture and a second water flow picture of a heat exchanger interface are obtained, wherein the first water flow picture and the second water flow picture are pictures collected at different moments.
Optionally, in the above step, the heat exchanger is a device that transfers part of heat of the hot fluid to the cold fluid, and in the embodiment of the present invention, the plate heat exchanger is mainly used.
It should be noted that, in the above steps, the first water flow rate picture is obtained first, and then the second water flow rate picture is obtained at the same position after a preset period of time, so as to achieve the purpose of detecting the water flow rate.
And step S104, when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, acquiring a temperature distribution graph in the operation process of the heat exchanger, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image.
In the above steps, whether congestion exists is judged by using the fuzzy degree of the water flow picture, when the inter-plate channel of the plate heat exchanger is blocked, the water flow at the blocked part changes, and the fuzzy degree of the water flow picture also changes correspondingly, so as to judge whether congestion occurs.
And step S106, determining fault information of the heat exchanger based on the temperature distribution diagram.
As can be seen from the above, in the embodiment of the present invention, a first water flow rate picture and a second water flow rate picture of a heat exchanger interface may be obtained first, where the first water flow rate picture and the second water flow rate picture are pictures acquired at different times; then, when it is determined that the difference value of the degree of blur between the first water flow image and the second water flow image is greater than a first preset threshold value, acquiring a temperature distribution graph in the operation process of the heat exchanger, wherein the first preset threshold value is a preset threshold value of the degree of blur of the water flow image; and finally determining fault information of the heat exchanger based on the temperature distribution diagram. According to the method for determining the heat exchanger fault information, the purpose of determining the fault information of the heat exchanger based on the acquired water flow image and temperature distribution diagram of the heat exchanger interface is achieved, the technical effect of improving the fault detection efficiency of the plate heat exchanger is achieved, and the technical problems that channels between plates of the plate heat exchanger are easy to block, manual detection of blocking is low in blocking efficiency and potential safety hazards exist in the related technology are solved.
As an optional embodiment, before determining that the difference in the degree of blur between the first water flow rate picture and the second water flow rate image is greater than a first predetermined threshold, the method further comprises: respectively acquiring a first fuzzy degree and a second fuzzy degree of the first water flow image and the second water flow image by using a preset algorithm; and calculating the difference between the first fuzzy degree and the second fuzzy degree and taking an absolute value to obtain the fuzzy degree difference.
Fig. 2 is a schematic diagram of a plate heat exchanger structure according to an embodiment of the present invention, as shown in fig. 2, water flow in the plate heat exchanger may flow at a constant speed between plates, when congestion occurs, a local water flow velocity may change, through detection of changes in water flow rate, according to a difference in blur degree in a certain time, a laplacian variance algorithm is used to calculate the blur degree of front and rear images, and when a calculated blur degree difference is greater than a set threshold, the calculated blur degree difference is used as a preliminary condition for determining blocking.
As an alternative embodiment, the preset algorithm includes one of the following: laplace algorithm, floating point algorithm.
In the above alternative embodiment, the preset algorithm is mainly to calculate the blur degree in the water flow rate picture, which includes but is not limited to: laplace variance algorithm, floating point numerical method, pixel gray value statistical method, etc. The laplacian variance algorithm is to perform convolution operation on a certain channel in the picture by using a laplacian mask and then calculate a variance (namely standard deviation), and if the variance of the picture is lower than a predefined threshold, the picture can be regarded as fuzzy; otherwise, the change of the water flow is not considered as fuzzy, so that the change of the water flow is judged simply and effectively.
As an alternative embodiment, determining the fault information of the heat exchanger based on the temperature profile includes: extracting RGB difference values in the temperature distribution diagram, wherein the RGB difference values are the difference values between the RGB value abnormal area and other areas in the temperature distribution diagram; extracting contour information in the temperature distribution diagram, wherein the contour information is a difference ratio of upper and lower width ranges of a working temperature runner; and determining the fault information according to the RGB difference value and the contour information, and realizing fault detection of the plate heat exchanger.
In the above optional embodiment, the RGB values in this embodiment are values that can represent different colors, in the embodiment, the RGB values in the image are calculated, the blockage condition of the target region is determined according to the difference between the RGB values of the blocked region and the RGB values of the normal region, and the local temperature image after blockage also exhibits a certain area of color diffusion, and then the target is performed to extract the contour of the image in the range, and the average width of the contour of the blocked region is compared with the contour of the periphery thereof, so that singular change of the values occurs, thereby determining the congestion condition and the specific position.
As an alternative embodiment, determining the fault information according to the RGB difference and the contour information includes: determining whether a first target area exists in the temperature distribution map, wherein the first target area is an area in the temperature distribution map, the RGB difference value of which is greater than a second preset threshold value, and the second preset threshold value is an RGB preset difference value threshold value; determining whether a second target area exists in the temperature distribution map, wherein the second target area is an area in the temperature distribution map, in which the profile information is greater than a third preset threshold value, and the third preset threshold value is a preset profile information threshold value; in the event that it is determined that the first target region and the second target region exist, determining whether a blockage of the water inlet has occurred; and under the condition that the water inlet is determined to be blocked, determining the fault information comprising the fault position according to the position information of the first target area and the position information of the second target area.
Fig. 3 is a schematic diagram of thermal imaging temperature distribution according to an embodiment of the present invention, as shown in fig. 3, when a plate heat exchanger normally operates, a water flow flows at a constant speed and performs a normal heat exchange process, a temperature distribution diagram shows a certain distribution rule, and once a certain position is congested, RGB values of a local position of the plate heat exchanger may generate a certain regional sudden change relative to other positions where congestion does not occur, that is, color deepening and diffusion of a certain area of temperature distribution at a flow channel may occur. .
As an alternative embodiment, in the case where it is determined that the first target area exists and the second target area exists, determining whether the water inlet is blocked includes: receiving the fault information; after the fault information is determined to exceed a fourth preset threshold value after being received, judging that a blocking condition occurs; and the fourth preset threshold is a preset threshold of time after the fault information is received.
In the above optional embodiment, when it is determined that the first target area exists and the second target area also exists at the same time, it may be determined that the water inlet is blocked, timing is started after the fault information is received, and a congestion condition is determined after the time exceeds a preset time, so as to achieve congestion reasonably detected.
Further, in the embodiment of the invention, the plate heat exchanger can be shot by using the thermal camera, so that the temperature distribution map of the surface of the object in the operation of the plate heat exchanger can be obtained. Because of the blocked area, heat can build up, resulting in a small range of elevated temperatures. The plate heat exchanger thermal imaging picture (namely the temperature distribution graph) shows red at high temperature, and the red is darker at higher temperature, and at this time, the RGB values in the image can be extracted by using a statistical characteristic method of color parameters, so as to represent the difference between the colors of the image and the temperature by using the RGB values. Therefore, if the difference between the temperature of the blocked place and the temperature of the surrounding becomes large, the color difference on the distribution diagram becomes obvious, and a certain area of color diffusion occurs.
As an optional embodiment, after determining the fault information of the heat exchanger based on the temperature profile, the method further comprises: and controlling a water pump to clean the fault position of the heat exchanger.
Fig. 4 is a flowchart of a method for determining heat exchanger fault information according to an embodiment of the present invention, and as shown in fig. 4, a picture of water flow within a certain period of time is taken first, and then it is determined whether a difference value of degrees of ambiguity of the pictures of water flow taken at successive times is greater than a preset threshold, and if not, a monitoring state is continuously maintained; if the difference value is larger than the preset threshold value, continuously judging whether the difference value ratio of the upper width and the lower width at a certain position of the flow channel is larger than a certain preset threshold value (for example, 40%) under the condition that whether the RGB value of the local mutation in the thermal imaging temperature distribution diagram is larger than the preset threshold value, and if the difference value ratio is not larger than the preset threshold value, continuously keeping monitoring; and if so, continuously judging whether the time under the condition that the last step is met continuously exceeds a certain preset time threshold value, if so, judging that the congestion occurs, and awakening the water pump to clean the plate heat exchanger.
Therefore, in the embodiment of the invention, whether the plate heat exchanger is blocked can be detected, the blocking position can be accurately found out, the subsequent cleaning work can be conveniently and smoothly carried out, the fuzzification degree of the front and rear images is calculated by using a Laplace variance algorithm according to the difference of the fuzzification degree of the water flow in a certain time through the detection of the change of the water flow, and when the calculated fuzzification degree difference is larger than the set threshold value, the fuzzification degree difference is used as a preliminary condition for judging the blocking. The method comprises the steps of shooting a heat exchanger image by using a thermal imaging camera to obtain a temperature distribution map of the surface of an object, wherein the local temperature is increased and the color is deepened after blockage, calculating RGB values in the image by using a statistical characteristic method of color parameters, confirming the blockage condition of a target area according to the difference between the RGB value of the blocked area and the RGB value of a normal area, enabling the local temperature image to show color diffusion in a certain area after blockage, and extracting the outline of the image in the range by performing target extraction in the next step, wherein the average width of the outline of the blocked area is relatively to the outline of the periphery of the blocked area, and the singular change of the numerical value can occur. Finally, the position of the plate heat exchanger which is blocked is recorded according to a coordinate system, and the blocked position can be accurately positioned, so that the impurities accumulated substances can be promoted to flow by starting and stopping the water pump, and the heat exchanger can be accurately positioned and cleaned to ensure the stable operation of the system.
Example 2
According to another aspect of the embodiments of the present invention, there is also provided a device for determining heat exchanger failure information, the device for determining heat exchanger failure information uses the method for determining heat exchanger failure information in embodiment 1, fig. 5 is a schematic diagram of a device for determining heat exchanger failure information according to an embodiment of the present invention, and as shown in fig. 5, the device for determining heat exchanger failure information includes: a first obtaining module 51, a second obtaining module 53 and a determining module 55. The following describes a device for determining the heat exchanger failure information.
The first obtaining module 51 is configured to obtain a first water flow rate picture and a second water flow rate picture of a heat exchanger interface, where the first water flow rate picture and the second water flow rate picture are pictures acquired at different times.
A second obtaining module 53, configured to obtain a temperature distribution graph during an operation process of the heat exchanger when it is determined that a difference value of the degree of blur between the first water flow image and the second water flow image is greater than a first predetermined threshold, where the first predetermined threshold is a preset threshold of the degree of blur of the water flow image.
A determining module 55 for determining fault information of the heat exchanger based on the temperature profile.
It should be noted that the first acquiring module 51, the second acquiring module 53 and the determining module 55 correspond to steps S102 to S106 in embodiment 1, and the modules are the same as the corresponding steps in implementation examples and application scenarios, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
As can be seen from the above, in the embodiment of the present invention, a first obtaining module 51 may first be used to obtain a first water flow rate picture and a second water flow rate picture of a heat exchanger interface, where the first water flow rate picture and the second water flow rate picture are pictures collected at different times; then, when determining that the difference value of the degree of blur between the first water flow image and the second water flow image is greater than a first predetermined threshold value, a second obtaining module 53 obtains a temperature distribution graph in the operation process of the heat exchanger, wherein the first predetermined threshold value is a preset threshold value of the degree of blur of the water flow image; finally, a determination module 55 is used to determine fault information for the heat exchanger based on the temperature profile. Through the device for determining the heat exchanger fault information, the purpose of determining the fault information of the heat exchanger based on the acquired water flow image and temperature distribution diagram of the heat exchanger interface is achieved, so that the technical effect of improving the fault detection efficiency of the plate heat exchanger is achieved, and the technical problems that channels between plates of the plate heat exchanger are easy to block, manual detection of blocking is low in blocking efficiency and potential safety hazards exist in the related technology are solved.
Optionally, the apparatus further comprises: a third obtaining module, configured to obtain a first blurring degree and a second blurring degree of the first water flow rate picture and the second water flow rate picture by using a preset algorithm, respectively, before determining that a difference value between the blurring degrees of the first water flow rate picture and the second water flow rate picture is greater than a first predetermined threshold; and the calculation module is used for calculating the difference value between the first fuzzy degree and the second fuzzy degree and taking an absolute value to obtain the fuzzy degree difference value.
Optionally, the preset algorithm includes one of: laplace algorithm, floating point algorithm.
Optionally, the determining module includes: the first extraction unit is used for extracting RGB difference values in the temperature distribution diagram, wherein the RGB difference values are the difference values between the RGB value abnormal area and other areas in the temperature distribution diagram; the second extraction unit is used for extracting profile information in the temperature distribution diagram, wherein the profile information is a difference ratio of upper and lower width ranges of the working temperature flow channel; and the determining unit is used for determining the fault information according to the RGB difference value and the contour information.
Optionally, the determining unit includes: the first determining subunit is configured to determine whether a first target region exists in the temperature distribution map, where the first target region is a region in the temperature distribution map where the RGB difference is greater than a second preset threshold, where the second preset threshold is an RGB preset difference threshold; a second determining subunit, configured to determine whether a second target region exists in the temperature distribution map, where the second target region is a region in the temperature distribution map where the profile information is greater than a third preset threshold, where the third preset threshold is a preset profile information threshold; a third determining subunit, configured to determine whether the water inlet is blocked if it is determined that the first target region and the second target region exist; and the fourth determining subunit is configured to determine, when it is determined that the water inlet is blocked, the fault information including a fault location according to the location information of the first target area and the location information of the second target area.
Optionally, the third determining subunit includes: a receiving subunit, configured to receive the fault information; the judging subunit is used for judging that a blocking condition occurs after the fault information is determined to be received and exceeds a fourth preset threshold value; and the fourth preset threshold is a preset threshold of time after the fault information is received.
Optionally, the apparatus further comprises: and the control module is used for controlling the water pump to clean the fault position of the heat exchanger after determining the fault information of the heat exchanger based on the temperature distribution diagram.
Example 3
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored computer program, wherein when the computer program is executed by a processor, the computer-readable storage medium is controlled by an apparatus to execute the method for determining heat exchanger fault information according to any one of the above.
Example 4
According to another aspect of the embodiment of the present invention, there is also provided a processor for executing a computer program, wherein the computer program executes to execute the method for determining heat exchanger fault information according to any one of the above methods.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for determining heat exchanger fault information, comprising:
acquiring a first water flow picture and a second water flow picture of a heat exchanger interface, wherein the first water flow picture and the second water flow picture are pictures acquired at different moments;
when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, acquiring a temperature distribution graph in the operation process of the heat exchanger, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image;
determining fault information for the heat exchanger based on the temperature profile.
2. The method of claim 1, wherein prior to determining that the difference in the degree of blur between the first water flow rate picture and the second water flow rate image is greater than a first predetermined threshold, the method further comprises:
respectively acquiring a first fuzzy degree and a second fuzzy degree of the first water flow image and the second water flow image by using a preset algorithm;
and calculating the difference between the first fuzzy degree and the second fuzzy degree and taking an absolute value to obtain the fuzzy degree difference.
3. The method of claim 2, wherein the predetermined algorithm comprises one of: laplace algorithm, floating point algorithm.
4. The method of claim 1, wherein determining fault information for the heat exchanger based on the temperature profile comprises:
extracting RGB difference values in the temperature distribution diagram, wherein the RGB difference values are the difference values between the RGB value abnormal area and other areas in the temperature distribution diagram;
extracting contour information in the temperature distribution diagram, wherein the contour information is a difference ratio of upper and lower width ranges of a working temperature runner;
and determining the fault information according to the RGB difference value and the contour information.
5. The method of claim 4, wherein determining the fault information based on the RGB difference values and the contour information comprises:
determining whether a first target area exists in the temperature distribution map, wherein the first target area is an area in the temperature distribution map, the RGB difference value of which is greater than a second preset threshold value, and the second preset threshold value is an RGB preset difference value threshold value;
determining whether a second target area exists in the temperature distribution map, wherein the second target area is an area in the temperature distribution map, in which the profile information is greater than a third preset threshold value, and the third preset threshold value is a preset profile information threshold value;
in the event that it is determined that the first target region and the second target region exist, determining whether a blockage of the water inlet has occurred;
and under the condition that the water inlet is determined to be blocked, determining the fault information comprising the fault position according to the position information of the first target area and the position information of the second target area.
6. The method of claim 5, wherein determining whether the water inlet is blocked if it is determined that the first target region and the second target region are present comprises:
receiving the fault information;
after the fault information is determined to exceed a fourth preset threshold value after being received, judging that a blocking condition occurs;
and the fourth preset threshold is a preset threshold of time after the fault information is received.
7. The method of any of claims 1-5, wherein after determining the fault information for the heat exchanger based on the temperature profile, the method further comprises:
and controlling a water pump to clean the fault position of the heat exchanger.
8. A device for determining heat exchanger failure information, comprising:
the first acquisition module is used for acquiring a first water flow picture and a second water flow picture of a heat exchanger interface, wherein the first water flow picture and the second water flow picture are pictures acquired at different moments;
the second obtaining module is used for obtaining a temperature distribution graph in the operation process of the heat exchanger when the fuzzy degree difference value between the first water flow image and the second water flow image is determined to be larger than a first preset threshold value, wherein the first preset threshold value is a preset fuzzy degree threshold value of the water flow image;
a determination module to determine fault information for the heat exchanger based on the temperature profile.
9. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed by a processor, controls an apparatus in which the computer-readable storage medium is located to perform the method for determining heat exchanger fault information according to any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a computer program, wherein the computer program is configured to execute the method for determining heat exchanger failure information according to any of the preceding claims 1 to 7 when running.
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| CN202111034622.2A CN113888469A (en) | 2021-09-03 | 2021-09-03 | Method and device for determining heat exchanger fault information |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117515859A (en) * | 2023-12-12 | 2024-02-06 | 广东安旺科技有限公司 | Control method, device and system for centralized water-cooling refrigerating system and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117515859A (en) * | 2023-12-12 | 2024-02-06 | 广东安旺科技有限公司 | Control method, device and system for centralized water-cooling refrigerating system and storage medium |
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