Compressor fault diagnosis method, device, equipment and storage medium

Abstract

The present application provides a compressor fault diagnosis method, device, equipment and storage medium, which obtains the pressure parameters of the compressor; identifies the target working phase of the compressor according to the change information of the pressure parameters, wherein the target working phase includes one of the intake phase, the compression phase, the expansion phase and the exhaust phase; determines the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase. By detecting the pressure change of the compressor, the fault information of each working phase of the compressor is determined, and the accuracy of compressor fault detection is improved.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a compressor fault diagnosis method, device, equipment and storage medium. Background Art

[0002] A piston compressor is a compressor that relies on the reciprocating motion of a piston to pressurize and transport gas, and generally includes suction, compression, expansion, and exhaust stages. In order to ensure the stability of the compressor operation, the relevant technology generally detects compressor faults by detecting the dead point position of the piston in the compressor. However, due to the diverse use of compressor environments and the influence of various factors such as temperature and thermal stress during the operation of the compressor, the position of the dead point of the piston of the compressor will change and is not fixed. Therefore, there will be a certain deviation in judging the piston component failure of the compressor through the dead point position detection, which reduces the accuracy of compressor fault detection. Summary of the invention

[0003] The present application provides a compressor fault diagnosis method, device, equipment and storage medium, aiming to solve the problem of low compressor fault detection accuracy and improve the compressor fault detection accuracy.

[0004] In a first aspect, the present application provides a compressor fault diagnosis method, the method comprising:

[0005] Obtaining pressure parameters of the compressor;

[0006] According to the change information of the pressure parameter, identifying the target working phase of the compressor, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase;

[0007] The fault information of the compressor is determined according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0008] In a possible implementation of the present application, identifying the target working phase of the compressor according to the change information of the pressure parameter includes:

[0009] Extracting a target pressure parameter from each of the pressure parameters according to the change information of the pressure parameters, wherein the target pressure parameter is a pressure parameter between turning points of the pressure parameter change;

[0010] The target working stage of the compressor is determined based on the change information of the target pressure parameter and the preset pressure change information corresponding to each working stage.

[0011] In a possible implementation of the present application, after obtaining the pressure parameter of the compressor, the method further includes:

[0012] Obtaining a key phase signal corresponding to the compressor;

[0013] Determining the working cycle of the compressor according to the time information corresponding to the key phase signal;

[0014] The pressure parameters in the working cycle are screened out from the pressure parameters, and the step of identifying the target working phase of the compressor according to the change information of the pressure parameters is performed.

[0015] In a possible implementation of the present application, the pressure change information is a pressure change rate curve, and the preset standard change information is a preset change rate curve;

[0016] The determining of the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase includes:

[0017] Fitting and generating a pressure change curve according to a target pressure parameter corresponding to the target working stage and a time point corresponding to the target pressure parameter;

[0018] Performing differentiation processing on the pressure change curve to obtain a pressure change rate curve;

[0019] Fault information of the compressor is determined according to a curve similarity between the pressure change rate curve and a preset change rate curve corresponding to the target power stage.

[0020] In a possible implementation of the present application, the preset change rate curve includes a change rate standard curve;

[0021] The determining the fault information of the compressor according to the curve similarity between the pressure change rate curve and the preset change rate curve corresponding to the target working phase includes:

[0022] If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor;

[0023] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, it is determined that the target power phase of the compressor is faulty.

[0024] In a possible implementation of the present application, the preset change rate curve further includes at least one fault type curve;

[0025] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, determining that the target working phase of the compressor is faulty includes:

[0026] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, calculating the similarity between the pressure change rate curve and each of the fault type curves;

[0027] Filtering out a target fault type curve having the greatest similarity to the pressure change rate curve from the fault type curve;

[0028] The preset fault information corresponding to the target fault type curve is set as the fault information of the target working phase of the compressor.

[0029] In a possible implementation of the present application, if the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, after calculating the similarity between the pressure change rate curve and each of the fault type curves, the method includes:

[0030] If there is no target fault type curve with the greatest similarity, sending the fault information collection window carrying the pressure change rate curve to the user end;

[0031] Receiving the fault information fed back by the user terminal based on the fault information collection window;

[0032] The pressure change rate curve is set as a fault type curve, and the fault information is associated with the fault type curve for storage.

[0033] In a second aspect, the present application further provides a compressor fault diagnosis device, the compressor fault diagnosis device comprising:

[0034] Acquisition module: used for acquiring the pressure parameters of the compressor;

[0035] An identification module: used for identifying a target working phase of the compressor according to the change information of the pressure parameter, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase;

[0036] Determination module: used to determine the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage.

[0037] In a third aspect, the present application further provides a compressor fault diagnosis device, the compressor fault diagnosis device comprising:

[0038] one or more processors;

[0039] Memory; and

[0040] One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement any one of the compressor fault diagnosis methods.

[0041] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in any one of the compressor fault diagnosis methods described above.

[0042] The present application provides a compressor fault diagnosis method, device, equipment and storage medium, by obtaining the pressure parameters of the compressor; identifying the target working stage of the compressor according to the change information of the pressure parameters, wherein the target working stage includes one of the suction stage, the compression stage, the expansion stage and the exhaust stage; determining the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage. In this scheme, the pressure parameters of the compressor are obtained, and the target working stage corresponding to each pressure parameter in the compressor is analyzed according to the change information of the compressor parameters, and the pressure change information of the pressure parameters corresponding to the working stage is further analyzed, and then the fault information corresponding to the compressor in the target working stage is further analyzed according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage. The traditional method of judging the compressor fault by monitoring the dead point of the compressor is abandoned, and the fault information of each working stage of the compressor is determined by detecting the pressure change of the compressor, thereby improving the accuracy of compressor fault detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 is a schematic diagram of a scenario of a compressor fault diagnosis method provided in an embodiment of the present application;

[0045] Figure 2 It is a schematic flow chart of an embodiment of a compressor fault diagnosis method provided in an embodiment of the present application;

[0046] Figure 3 A schematic flow chart of one implementation scheme of identifying a target working phase in a compressor fault diagnosis method provided in an embodiment of the present application;

[0047] Figure 4A schematic flow chart of another implementation scheme of the compressor fault diagnosis method provided in an embodiment of the present application;

[0048] Figure 5 A schematic diagram of a flow chart of one implementation scheme for determining fault information in a compressor fault diagnosis method provided in an embodiment of the present application;

[0049] Figure 6 A schematic flow chart of another implementation scheme for determining fault information in a compressor fault diagnosis method provided in an embodiment of the present application;

[0050] Figure 7 A schematic flow chart of another implementation scheme for determining fault information in the compressor fault diagnosis method provided in an embodiment of the present application;

[0051] Figure 8 is a schematic structural diagram of an embodiment of a compressor fault diagnosis device provided in an embodiment of the present application;

[0052] Fig. 9 It is a schematic diagram of the structure of an embodiment of a compressor fault diagnosis device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0055] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0056] The embodiments of the present application provide a compressor fault diagnosis method, device, equipment and computer-readable storage medium, which are described in detail below.

[0057] The compressor fault diagnosis method in an embodiment of the present invention is applied to a compressor fault diagnosis device, and the compressor fault diagnosis device is arranged in the compressor fault diagnosis equipment. The compressor fault diagnosis equipment is provided with one or more processors, a memory, and one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the compressor fault diagnosis method; the compressor fault diagnosis equipment can be a terminal, such as a mobile phone or a tablet computer, and the compressor fault diagnosis equipment can also be a server, or a service cluster composed of multiple servers.

[0058] It is understandable that the compressor mentioned in the embodiment is used to inhale, compress, expand and discharge the compressed medium; illustratively, the compressor is a piston compressor. It is understandable that the piston compressor is a compressor that relies on the reciprocating motion of the piston to pressurize and transport the gas, also known as a "reciprocating piston compressor" or "reciprocating compressor". It is mainly composed of a working chamber, a transmission component, a fuselage and auxiliary components. The working chamber is directly used to compress the gas, and is composed of a cylinder, a cylinder liner, a valve, a filler, a piston and a piston rod. The piston is driven by the piston rod to reciprocate in the cylinder, and the volume of the working chamber on both sides of the piston changes in opposite directions in turn. The gas on the side with reduced volume is discharged through the valve due to the increase in pressure. It is understandable that the pressure parameter of the compressor can be the pressure parameter in the cylinder or the pressure parameter received by the piston, which is not specifically limited in this application. The four processes of suction, compression, exhaust and expansion in the cylinder constitute a cycle.

[0059] like Figure 1 As shown, Figure 1This is a scenario diagram of the compressor fault diagnosis method in an embodiment of the present application. The compressor fault diagnosis scenario in the embodiment of the present invention includes a compressor fault diagnosis device 100 (a compressor fault diagnosis device is integrated in the compressor fault diagnosis device 100), and a computer-readable storage medium corresponding to the compressor fault diagnosis is run in the compressor fault diagnosis device 100 to execute the steps of compressor fault diagnosis.

[0060] Understandably, Figure 1 The compressor fault diagnosis equipment in the scenario of the compressor fault diagnosis method shown, or the devices included in the compressor fault diagnosis equipment, do not constitute a limitation on the embodiments of the present invention, that is, the number of devices and types of devices included in the scenario of the compressor fault diagnosis method, or the number of devices and types of devices included in each device do not affect the overall implementation of the technical solution in the embodiments of the present invention, and can all be regarded as equivalent replacements or derivatives of the technical solution claimed to be protected in the embodiments of the present invention.

[0061] The compressor fault diagnosis device 100 in the embodiment of the present invention is mainly used for: obtaining the pressure parameters of the compressor; identifying the target working phase of the compressor according to the change information of the pressure parameters, wherein the target working phase includes one of the intake phase, the compression phase, the expansion phase, and the exhaust phase; determining the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0062] In the embodiment of the present invention, the compressor fault diagnosis device 100 may be an independent compressor fault diagnosis device, or a compressor fault diagnosis device network or a compressor fault diagnosis device cluster composed of compressor fault diagnosis devices. For example, the compressor fault diagnosis device 100 described in the embodiment of the present invention includes but is not limited to a computer, a network host, a single network compressor fault diagnosis device, a plurality of network compressor fault diagnosis device sets or a cloud compressor fault diagnosis device composed of a plurality of compressor fault diagnosis devices. The cloud compressor fault diagnosis device is composed of a large number of computers or network compressor fault diagnosis devices based on cloud computing.

[0063] Those skilled in the art will understand that Figure 1 The application environment shown in the figure is only one application scenario of the present application solution and does not constitute a limitation on the application scenario of the present application solution. Other application environments may also include Figure 1 More or fewer compressor fault diagnosis devices as shown in, or compressor fault diagnosis device network connection relationships, such as Figure 1Only one compressor fault diagnosis device is shown. It can be understood that the scenario of the compressor fault diagnosis method can also include one or more other compressor fault diagnosis devices, which are not limited here. The compressor fault diagnosis device 100 can also include a memory for storing data, such as compressor work parameters, pressure parameters corresponding to different time points of the compressor, etc.

[0064] In addition, in the scenario of the compressor fault diagnosis method of the present application, the compressor fault diagnosis device 100 may be provided with a display device, or the compressor fault diagnosis device 100 may not be provided with a display device and may be communicated with an external display device 200, and the display device 200 is used to output the result of the execution of the compressor fault diagnosis method in the compressor fault diagnosis device. The compressor fault diagnosis device 100 may access a background database 300 (the background database may be in the local memory of the compressor fault diagnosis device, or the background database may also be set in the cloud), and the background database 300 may store information related to the compressor fault diagnosis, for example, the initial image in the background database 300, or pre-set filtering parameters.

[0065] It should be noted that Figure 1 The scenario diagram of the compressor fault diagnosis method shown is only an example. The scenario of the compressor fault diagnosis method described in the embodiment of the present invention is to more clearly illustrate the technical solution of the embodiment of the present invention, and does not constitute a limitation on the technical solution provided by the embodiment of the present invention.

[0066] Based on the scenario of the above compressor fault diagnosis method, an embodiment of the compressor fault diagnosis method is proposed.

[0067] like Figure 2 As shown, it is a schematic flow chart of an embodiment of a compressor fault diagnosis method in an embodiment of the present application, and the compressor fault diagnosis method includes steps S201-S203:

[0068] S201. Obtain pressure parameters of the compressor.

[0069] The pressure parameters include multiple pressure parameters collected at different time points. It can be understood that the pressure parameters can be obtained through a compressor pressure detection sensor.

[0070] Exemplarily, the pressure detection sensor collects pressure values ​​corresponding to different points as pressure parameters according to a preset collection interval, and stores the pressure parameters corresponding to time points. When the compressor fault diagnosis device receives the compressor fault diagnosis instruction, it obtains the pressure parameters collected at different time points.

[0071] It is understandable that the compressor fault diagnosis device can also actively obtain pressure parameters collected at different time points to perform compressor fault diagnosis, which is not specifically limited in this application.

[0072] S202: Identify the target working phase of the compressor according to the change information of the pressure parameter.

[0073] Among them, the change information is used to reflect the change trend of the reaction pressure within a preset time period. Exemplarily, the change information can be a pressure change curve corresponding to a pressure parameter, a curve slope corresponding to the pressure change curve corresponding to the pressure parameter, or a change difference of the pressure change parameter within a preset time period.

[0074] Among them, the target working stage includes one of the intake stage, compression stage, expansion stage, and exhaust stage; it can be understood that the four processes of intake, compression, exhaust, and expansion in the compressor cylinder constitute a cyclic working process, that is, they correspond to the intake stage, compression stage, expansion stage, and exhaust stage respectively. It can be further understood that each different working stage corresponds to different pressure parameter change characteristics, that is, the pressure change parameters are classified according to the change information of the pressure parameters, and the pressure change information corresponding to each category is determined according to the pressure change parameters corresponding to the category. The target working stage corresponding to the pressure change information corresponding to the category can be confirmed by comparing the pressure change information corresponding to the category with the preset pressure change information corresponding to each working stage. Example:

[0075] In one of the embodiments of the present application, a pressure change curve is generated according to the change information of the pressure parameter, and the pressure change curve is compared with a standard pressure change curve within a preset cycle (one cycle includes four working stages, namely, an intake stage, a compression stage, an expansion stage, and an exhaust stage), and then the target working stage corresponding to the pressure change parameter is identified. It can be understood that if the pressure change curve matches one working stage in the standard pressure change curve within a preset cycle, then the pressure parameter includes one target working stage; if the pressure change curve matches four working stages in the standard pressure change curve within a preset cycle, then the pressure parameter includes four target working stages. Furthermore, the subsequent steps are performed after the pressure parameters corresponding to each of the target working stages are extracted.

[0076] In one of the embodiments of the present application, a pressure change curve is generated based on the change information of the pressure parameter, and the pressure change curve is searched. The pressure turning points in the pressure change curve are calculated, the pressure change difference between adjacent turning points is calculated, and the target working stage corresponding to the pressure parameter is determined based on the error between the difference and the preset standard deviation corresponding to each working stage.

[0077] S203: Determine the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0078] The pressure change information of the target working phase may be a pressure change curve, a pressure change rate curve, a pressure change variance value, a pressure change standard deviation value, etc. It is understandable that the preset standard change information may correspond to the pressure change information in the form of a pressure change curve, a pressure change rate curve, a pressure change variance value, and a pressure change standard deviation value.

[0079] The fault information of the compressor includes no fault, fault, fault type, etc. It can be understood that the fault type may include piston ring cross-flow of the compressor, piston ring wear of the compressor, etc.

[0080] Specifically, after the compressor fault diagnosis equipment identifies the target working phase of the compressor corresponding to the pressure parameters, it calculates the pressure change information corresponding to each target cycle according to the target pressure parameters corresponding to each target cycle, and compares the pressure change information with the preset standard change information corresponding to the target working phase for similarity, and further determines the fault information of the compressor based on the comparison results.

[0081] Further, based on the above implementation scheme, see Figure 3 , Figure 3 A schematic flow chart of one implementation scheme of identifying a target working phase in a compressor fault diagnosis method provided in an embodiment of the present application, including steps S301-S302:

[0082] S301. Extracting a target pressure parameter from among the pressure parameters according to the change information of the pressure parameters.

[0083] The target pressure parameter is the pressure parameter between the turning points of the pressure parameter change. It is understandable that the initial pressure parameter is the turning point of the pressure change in the change information, that is, the sudden change point of the pressure change in the pressure change information, such as the curve peak, the curve inflection point, etc.

[0084] Specifically, in the implementation scheme of the present application, the compressor fault diagnosis equipment generates a pressure change curve according to the pressure change parameter fitting, and analyzes the turning point of the curve in the pressure change curve. It can be understood that due to the pressure change characteristics of the compressor's working stage, for example, the compressor compression stage mainly completes a faster pressure increase, and the corresponding pressure change is exemplarily the pressure compression from 10psi to 1000psi, and the exhaust stage may be from 1000psi to 10psi, that is, it can be understood that each working stage can usually show an obvious stage turning point on the curve, and then the four working stages can be divided by the turning point of the curve. It can be further understood that the turning point can also be a preset pressure parameter corresponding to the compressor, that is, the pressure parameter whose pressure parameter is the same as the preset pressure parameter or within the error range is found as the initial pressure parameter.

[0085] Furthermore, after finding out the initial pressure parameters, the compressor fault diagnosis device does not determine the pressure change information between the initial pressure parameters (relative to the time axis), that is, it cannot determine what specific stage the working phase is. That is, the pressure parameters corresponding to adjacent target time points and the initial pressure parameters corresponding to adjacent target time points are further set as the target pressure parameters, that is, the pressure parameters of each working stage are divided.

[0086] S302: Determine the target working stage of the compressor according to the change information of the target pressure parameter and the preset pressure change information corresponding to each working stage.

[0087] Furthermore, by performing parameter change information analysis on the target pressure parameter, the target working stage corresponding to the target pressure parameter is determined. Exemplarily, the parameter change information of the target pressure parameter is a target pressure change curve. The target pressure curve corresponding to the target pressure parameter and the standard pressure change curve (preset pressure change information) corresponding to each working stage are subjected to parameter change information analysis to further determine the target working stage corresponding to the target pressure parameter.

[0088] Further, based on the above implementation scheme, see Figure 4 , Figure 4 A schematic flow chart of another implementation scheme of a compressor fault diagnosis method provided in an embodiment of the present application includes steps S401-S403:

[0089] S401. Obtain pressure parameters of the compressor.

[0090] Specifically, the specific implementation method of step S401 refers to any of the above implementation schemes.

[0091] S402: Acquire a key phase signal corresponding to the compressor.

[0092] Among them, the key phase signal, that is, the vibration signal or pulse signal used to represent the working cycle of the compressor, can be understood that by setting a groove or a convex key on the rotating shaft of the compressor, which is called a key phase mark, when the groove or the convex key is turned to the probe position, it is equivalent to the change in the distance between the probe and the measured surface, and the sensor will generate a pulse signal. Every time the shaft rotates one circle, a pulse signal will be generated. The moment when the pulse signal is generated (time information) indicates that the shaft has rotated one cycle, that is, it has experienced a round of the above four working stages.

[0093] Specifically, after obtaining the pressure parameter, the compressor fault diagnosis device obtains a key phase signal corresponding to the time period of the pressure parameter.

[0094] S403: Determine the working cycle of the compressor according to the time information corresponding to the key phase signal.

[0095] Specifically, by analyzing the time information corresponding to adjacent pulse signals in the key phase signal, that is, setting the time corresponding to the earlier pulse signal of the two adjacent pulse signals as the starting point of the cycle, and setting the time corresponding to the later pulse signal of the two adjacent pulse signals as the end point of the cycle, the working cycle of the compressor is determined.

[0096] S404: Filter out pressure parameters in the power cycle from the pressure parameters, and identify a target power phase of the compressor according to change information of the pressure parameters.

[0097] Specifically, according to the time point corresponding to the pressure parameter, the time point selected from the pressure parameter is located in the corresponding pressure parameter of the working cycle, and further according to the change information of the screened pressure parameter, the target working stage of the compressor is identified. It can be understood that the end of the cycle corresponds to the end of the exhaust phase of a working cycle, that is, the starting point of the cycle corresponds to the starting time of the working cycle. It can be further understood that the end of the cycle and the starting point of the cycle can further assist in the division of the working stages described by the pressure parameter, reduce the data interference of the target working stage identification, and improve the efficiency of data analysis.

[0098] S405: Determine the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0099] Specifically, the specific implementation method of step S405 refers to any implementation scheme described in the examples.

[0100] Further, based on the above implementation scheme, see Figure 5, Figure 5 A schematic flow chart of one implementation scheme for determining fault information in a compressor fault diagnosis method provided in an embodiment of the present application, including steps S501-S503:

[0101] S501 . Generate a pressure variation curve by fitting according to a target pressure parameter corresponding to the target working phase and a time point corresponding to the target pressure parameter.

[0102] Specifically, the pressure variation curve is generated by fitting by taking the target pressure parameter corresponding to the standard work stage as the dependent variable and the time point corresponding to the target pressure parameter as the independent variable.

[0103] S502: Differentiate the pressure change curve to obtain a pressure change rate curve.

[0104] Specifically, the pressure change function corresponding to the pressure change curve is differentiated by an independent variable to obtain a pressure change rate function corresponding to the corresponding pressure parameter, and then a pressure change rate curve corresponding to the target pressure parameter is obtained, and the pressure change rate curve is used as the pressure change information.

[0105] S503: Determine the fault information of the compressor according to the similarity between the pressure change rate curve and a preset change rate curve corresponding to the target power stage.

[0106] Specifically, after obtaining the pressure change rate curve corresponding to each target working stage, the compressor fault diagnosis device calculates the curve similarity between the pressure change rate curve and the preset change rate curve corresponding to the target working stage, and determines the fault information of the compressor according to the similarity. It can be understood that the curve similarity between the pressure change rate curve and the preset change rate curve corresponding to the target working stage can be calculated according to a preset similarity calculation model, and the present application does not make specific limitations. Among them, the preset change rate curve is the preset standard change information.

[0107] Specifically, in one embodiment of the present application, the preset change rate curve includes a change rate standard curve; further, see Figure 6 , Figure 6 A schematic flow chart of another implementation scheme for determining fault information in a compressor fault diagnosis method provided in an embodiment of the present application includes steps S601-S602:

[0108] S601: If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor.

[0109] Among them, the similarity threshold is used to determine the deviation between the pressure change rate curve and the change rate standard curve. It can be understood that the similarity threshold can be preset according to the application requirements of the compressor. For example, the similarity threshold is 99%, 95%, etc.

[0110] Specifically, after calculating the pressure change rate curve of the target power stage, the compressor fault diagnosis equipment calculates the similarity between the pressure change rate curve and the change rate standard curve corresponding to the target power stage. If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it means that the compressor has no fault in the target power stage, and it is determined that the compressor has no fault in the target power stage.

[0111] S602: If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, it is determined that the target power phase of the compressor is faulty.

[0112] Furthermore, after the compressor fault diagnosis device calculates the similarity between the pressure change rate curve and the change rate standard curve corresponding to the target power stage, if the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, it means that there is a fault in the target power stage of the compressor, and it is determined that the target power stage of the compressor is faulty.

[0113] It is further understood that in some other embodiments of the present application, the preset change rate curve also includes at least one fault type curve; it is understood that the fault type curve is a curve pressure change rate shape corresponding to different compressor faults; for details, see Figure 7 , Figure 7 A schematic flow chart of another implementation scheme for determining fault information in a compressor fault diagnosis method provided in an embodiment of the present application includes steps S701-S703:

[0114] S701: If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, calculate the similarity between the pressure change rate curve and each of the fault type curves.

[0115] Specifically, the similarity calculation between the pressure change rate curve and each of the fault type curves can be performed by inputting the similarity between the pressure change rate curve and each of the fault type curves into a curve similarity calculation model, and outputting the similarity between the pressure change rate curve and each of the fault type curves.

[0116] S702: Filter out a target fault type curve having the greatest similarity to the pressure change rate curve from the fault type curves.

[0117] Specifically, a target fault type curve having the greatest similarity to the pressure change rate curve is selected from the fault type curves; if the similarity between the target fault type curve and the pressure change rate curve is greater than a preset similarity threshold, it indicates that the pressure change rate curve and the target fault type curve have the same fault information corresponding thereto.

[0118] S703: Set the preset fault information corresponding to the target fault type curve as the fault information of the target working phase of the compressor.

[0119] Furthermore, by searching for preset fault information corresponding to the target fault type, it is determined that the fault information of the target working phase of the compressor is the preset fault information.

[0120] It can be understood that if the similarity between the target fault type curve and the pressure change rate curve is less than or equal to the preset similarity threshold, it means that the pressure change rate curve and the target fault type curve are not the same type of fault, and the preset fault information corresponding to the target fault type is not obtained as the fault information of the target working stage of the compressor. As the preset fault information, the target working stage of the compressor can be fed back to the user end.

[0121] Furthermore, the present application also provides an implementation scheme for determining fault information, which further includes the steps of: if the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to the preset similarity threshold, after calculating the similarity between the pressure change rate curve and each of the fault type curves, the similarity between the pressure change rate curve and each of the fault type curves is calculated;

[0122] (1) If there is no target fault type curve with the greatest similarity, a fault information collection window carrying the pressure change rate curve is sent to the user end.

[0123] It can be understood that if there is no target fault type curve with the greatest similarity, that is, the similarities are all less than the preset similarity threshold.

[0124] Specifically, the compressor fault diagnosis device calculates the similarity between the pressure change rate curve of the target stage and the corresponding fault type curves of the target stage, and compares the similarities with the preset similarity threshold. If the similarities are all less than the preset similarity threshold, it means that the fault information corresponding to the pressure change rate curve of the target stage and the corresponding fault type curves of the target stage are different fault information. Then, a fault information collection window carrying the pressure change rate curve is sent to the user end, so that the user can view the pressure change rate curve of the target stage and determine the fault information corresponding to the pressure change rate curve of the target stage, so that the user can output the fault information corresponding to the pressure change rate curve of the target stage based on the fault information collection window.

[0125] It can be understood that the compressor fault diagnosis device calculates the similarity between the pressure change rate curve of the target stage and the corresponding fault type curves of the target stage, and compares the similarities with the preset similarity threshold. If there are at least two similarities greater than the preset similarity threshold, the above step S702 is executed. If there is a similarity greater than the preset similarity threshold, the pressure change rate curve corresponding to the similarity greater than the preset similarity threshold is set as the target pressure change rate curve.

[0126] (2) receiving the fault information fed back by the user terminal based on the fault information collection window.

[0127] (3) The pressure change rate curve is set as a fault type curve, and the fault information is associated with the fault type curve for storage.

[0128] Specifically, after receiving the fault information fed back by the user terminal based on the fault information collection window, the compressor fault diagnosis device sets the pressure change rate curve as the fault type curve, and stores the fault information in association with the fault type curve to update the preset standard change information. It can be understood that by continuously updating the preset standard change information in the fault detection type, the accuracy and detection precision of the compressor fault diagnosis can be continuously improved.

[0129] It can be understood that based on the synchronous acquisition of key phase signals, the dynamic pressure parameters of each working stage of multiple cycles are fitted and calculated through algorithms, and a pressure change rate curve is formed. The reciprocating component failure of the compressor is judged by the pressure rise rate curve. For example, when the piston ring has faults such as cross-flow and wear, there will be sawtooth fluctuations on the rising edge of the curve. Based on the pressure rise rate diagnosis method and the establishment of a related knowledge base (i.e., preset standard change information), more faults related to reciprocating components can be identified and accumulated, and the compressor detection accuracy can be improved.

[0130] The embodiment of the present application provides a compressor fault diagnosis method, by obtaining the pressure parameters of the compressor; identifying the target working stage of the compressor according to the change information of the pressure parameters, wherein the target working stage includes one of the intake stage, the compression stage, the expansion stage, and the exhaust stage; determining the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage. In this scheme, the pressure parameters of the compressor are obtained, and the target working stage corresponding to each pressure parameter in the compressor is analyzed according to the change information of the compressor parameters, and the pressure change information of the pressure parameters corresponding to the working stage is further analyzed, and then the fault information corresponding to the compressor in the target working stage is further analyzed according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage. The traditional method of judging the compressor fault by monitoring the dead point of the compressor is abandoned, and the fault information of each working stage of the compressor is determined by detecting the pressure change of the compressor, thereby improving the accuracy of compressor fault detection.

[0131] In order to better implement the compressor fault diagnosis method in the embodiment of the present application, based on the compressor fault diagnosis method, the embodiment of the present application also provides a compressor fault diagnosis device, such as Figure 8 As shown, the compressor fault diagnosis device includes modules 801-803:

[0132] Acquisition module 801: used to acquire the pressure parameters of the compressor;

[0133] Identification module 802: used to identify the target working phase of the compressor according to the change information of the pressure parameter, wherein the target working phase includes one of the intake phase, the compression phase, the expansion phase, and the exhaust phase;

[0134] The determination module 803 is used to determine the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0135] In one possible implementation of the present application, the identification module 802 is used to identify the target working phase of the compressor according to the change information of the pressure parameter, and specifically includes:

[0136] Extracting a target pressure parameter from each of the pressure parameters according to the change information of the pressure parameters, wherein the target pressure parameter is a pressure parameter between turning points of the pressure parameter change;

[0137] The target working stage of the compressor is determined based on the change information of the target pressure parameter and the preset pressure change information corresponding to each working stage.

[0138] In one possible implementation of the present application, the device further includes a parameter screening module. After the acquisition module 801 is used to acquire the pressure parameter of the compressor, the parameter screening module is used to:

[0139] Obtaining a key phase signal corresponding to the compressor;

[0140] Determining the working cycle of the compressor according to the time information corresponding to the key phase signal;

[0141] The pressure parameters in the working cycle are screened out from the pressure parameters, and the step of identifying the target working phase of the compressor according to the change information of the pressure parameters is performed.

[0142] In one possible implementation of the present application, the pressure change information is a pressure change rate curve, and the preset standard change information is a preset change rate curve;

[0143] The determination module 803 is used to determine the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase, and specifically includes:

[0144] Fitting and generating a pressure change curve according to a target pressure parameter corresponding to the target working stage and a time point corresponding to the target pressure parameter;

[0145] Performing differentiation processing on the pressure change curve to obtain a pressure change rate curve;

[0146] Fault information of the compressor is determined according to a curve similarity between the pressure change rate curve and a preset change rate curve corresponding to the target power stage.

[0147] In one possible implementation of the present application, the preset change rate curve includes a change rate standard curve;

[0148] The determination module 803 is used to determine the fault information of the compressor according to the similarity between the pressure change rate curve and the preset change rate curve corresponding to the target power stage, and specifically includes:

[0149] If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor;

[0150] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, it is determined that the target power phase of the compressor is faulty.

[0151] In one possible implementation of the present application, the preset change rate curve includes a change rate standard curve;

[0152] The determination module 803 is used to determine the fault information of the compressor according to the similarity between the pressure change rate curve and the preset change rate curve corresponding to the target power stage, and specifically includes:

[0153] If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor;

[0154] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, it is determined that the target power phase of the compressor is faulty.

[0155] In one possible implementation of the present application, the preset change rate curve further includes at least one fault type curve;

[0156] The determination module 803 is used to determine that the target working phase of the compressor is faulty if the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, specifically including:

[0157] If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, calculating the similarity between the pressure change rate curve and each of the fault type curves;

[0158] Filtering out a target fault type curve having the greatest similarity to the pressure change rate curve from the fault type curve;

[0159] The preset fault information corresponding to the target fault type curve is set as the fault information of the target working phase of the compressor.

[0160] In one possible implementation of the present application, the device includes a fault information collection module, and in the determination module 803: if the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, after calculating the similarity between the pressure change rate curve and each of the fault type curves, the fault information collection module is used to:

[0161] If there is no target fault type curve with the greatest similarity, sending the fault information collection window carrying the pressure change rate curve to the user end;

[0162] Receiving the fault information fed back by the user terminal based on the fault information collection window;

[0163] The pressure change rate curve is set as a fault type curve, and the fault information is associated with the fault type curve for storage.

[0164] The embodiment of the present application provides a compressor fault diagnosis device, which is provided with an acquisition module: used to acquire the pressure parameters of the compressor; an identification module: used to identify the target working stage of the compressor according to the change information of the pressure parameters, wherein the target working stage includes one of the suction stage, the compression stage, the expansion stage, and the exhaust stage; and a determination module: used to determine the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage. In this scheme, the pressure parameters of the compressor are acquired, and the target working stage corresponding to each pressure parameter in the compressor is analyzed according to the change information of the compressor parameters, and the pressure change information of the pressure parameters corresponding to the working stage is further analyzed, and then the fault information corresponding to the compressor in the target working stage is further analyzed and determined according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage, abandoning the traditional method of judging the compressor fault by monitoring the dead point of the compressor, and determining the fault information of each working stage of the compressor by detecting the pressure change of the compressor, thereby improving the accuracy of compressor fault detection.

[0165] The embodiment of the present invention also provides a compressor fault diagnosis device, such as Fig. 9 As shown, Fig. 9 It is a schematic diagram of the structure of an embodiment of a compressor fault diagnosis device provided in an embodiment of the present application.

[0166] Compressor fault diagnosis equipment includes:

[0167] one or more processors;

[0168] Memory; and

[0169] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor in the steps of the compressor fault diagnosis method described in any of the above-mentioned compressor fault diagnosis device timed shutdown control method embodiments.

[0170] Specifically, the compressor fault diagnosis device may include one or more processors 1001 of processing cores, one or more computer-readable storage media memories 1002, a power supply 1003, an input unit 1004 and other components. Those skilled in the art will understand that Fig. 9 The compressor fault diagnosis device structure shown in the figure does not constitute a limitation on the compressor fault diagnosis device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0171] The processor 1001 is the control center of the compressor fault diagnosis device. It uses various interfaces and lines to connect various parts of the entire compressor fault diagnosis device. By running or executing software programs and / or modules stored in the memory 1002, and calling data stored in the memory 1002, it performs various functions of the compressor fault diagnosis device and processes data, thereby monitoring the compressor fault diagnosis device as a whole. It can be understood that the processor 1001 transmits signals with the controller. Optionally, the processor 1001 may include one or more processing cores; preferably, the processor 1001 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem processor mainly processes wireless communications. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1001.

[0172] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the compressor fault diagnosis device, etc. In addition, the memory 1002 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0173] In some embodiments of the present application, the compressor fault diagnosis device timing shutdown control device can be implemented in the form of a computer program. The computer program can be Fig. 9 The memory of the compressor fault diagnosis device can store various program modules constituting the timing shutdown control device of the compressor fault diagnosis device, such as: Figure 8 The acquisition module 801, the identification module 802, the determination module 803 and the control module 804 are shown. The computer program composed of various program modules enables the processor to execute the steps of the compressor fault diagnosis method of each embodiment of the present application described in this specification.

[0174] For example, Fig. 9 The compressor fault diagnosis equipment shown can be Figure 8The acquisition module 801 in the compressor fault diagnosis device shown executes step S201. The compressor fault diagnosis device can execute step S202 through the identification module 802. The compressor fault diagnosis device can execute step S203 through the determination module 803. The compressor fault diagnosis device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the compressor fault diagnosis device is used to provide computing and control capabilities. The memory of the compressor fault diagnosis device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the compressor fault diagnosis device is used to communicate with an external compressor fault diagnosis device through a network connection. When the computer program is executed by the processor, a timed shutdown control method for a compressor fault diagnosis device is implemented.

[0175] The compressor fault diagnosis device also includes a power supply 1003 for supplying power to various components. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply 1003 can also include any components such as one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, and power status indicators.

[0176] The compressor fault diagnosis device may further include an input unit 1004, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0177] Although not shown, the compressor fault diagnosis device may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 1001 in the compressor fault diagnosis device will load the executable files corresponding to the processes of one or more application programs into the memory 1002 according to the following instructions, and the processor 1001 will run the application programs stored in the memory 1002, thereby realizing various functions, as follows:

[0178] Obtaining pressure parameters of the compressor;

[0179] According to the change information of the pressure parameter, identifying the target working phase of the compressor, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase;

[0180] The fault information of the compressor is determined according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0181] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0182] To this end, an embodiment of the present invention provides a computer-readable storage medium (hereinafter referred to as storage medium), which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any of the compressor fault diagnosis device timed shutdown control methods provided in the embodiments of the present invention. For example, the computer program may be loaded by a processor to execute the following steps:

[0183] Obtaining pressure parameters of the compressor;

[0184] According to the change information of the pressure parameter, identifying the target working phase of the compressor, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase;

[0185] The fault information of the compressor is determined according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase.

[0186] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0187] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0188] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0189] The above is a detailed introduction to a compressor fault diagnosis method, device, equipment and storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A compressor fault diagnosis method, characterized in that: The method comprises: Obtaining pressure parameters of the compressor; According to the change information of the pressure parameter, identifying the target working phase of the compressor, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase; Determine the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage, the pressure change information is a pressure change rate curve, and the preset standard change information is a preset change rate curve; The determining of the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase includes: Fitting and generating a pressure change curve according to a target pressure parameter corresponding to the target working stage and a time point corresponding to the target pressure parameter; Performing differentiation processing on the pressure change curve to obtain a pressure change rate curve; Determining fault information of the compressor according to a curve similarity between the pressure change rate curve and a preset change rate curve corresponding to the target power stage, wherein the preset change rate curve includes a change rate standard curve and at least one fault type curve; The determining the fault information of the compressor according to the curve similarity between the pressure change rate curve and the preset change rate curve corresponding to the target working phase includes: If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor; If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, calculating the similarity between the pressure change rate curve and each of the fault type curves; Filtering out a target fault type curve having the greatest similarity to the pressure change rate curve from the fault type curve; Setting the preset fault information corresponding to the target fault type curve as the fault information of the target working phase of the compressor; If there is no target fault type curve with the greatest similarity, sending the fault information collection window carrying the pressure change rate curve to the user end; Receiving the fault information fed back by the user terminal based on the fault information collection window; The pressure change rate curve is set as a fault type curve, and the fault information is associated with the fault type curve for storage.

2. The compressor fault diagnosis method according to claim 1, characterized in that: Identifying a target working phase of the compressor according to the change information of the pressure parameter includes: Extracting a target pressure parameter from each of the pressure parameters according to the change information of the pressure parameters, wherein the target pressure parameter is a pressure parameter between turning points of the pressure parameter change; The target working stage of the compressor is determined based on the change information of the target pressure parameter and the preset pressure change information corresponding to each working stage.

3. The compressor fault diagnosis method according to claim 1, characterized in that: After obtaining the pressure parameter of the compressor, the method further includes: Obtaining a key phase signal corresponding to the compressor; Determining the working cycle of the compressor according to the time information corresponding to the key phase signal; The pressure parameters in the working cycle are screened out from the pressure parameters, and the step of identifying the target working phase of the compressor according to the change information of the pressure parameters is performed.

4. A compressor fault diagnosis device, characterized in that: The compressor fault diagnosis device comprises: Acquisition module: used for acquiring the pressure parameters of the compressor; An identification module: used for identifying a target working phase of the compressor according to the change information of the pressure parameter, wherein the target working phase includes one of an intake phase, a compression phase, an expansion phase, and an exhaust phase; Determination module: used to determine the fault information of the compressor according to the pressure change information of the target working stage and the preset standard change information corresponding to the target working stage, wherein the pressure change information is a pressure change rate curve, and the preset standard change information is a preset change rate curve; The determining of the fault information of the compressor according to the pressure change information of the target working phase and the preset standard change information corresponding to the target working phase includes: Fitting and generating a pressure change curve according to a target pressure parameter corresponding to the target working stage and a time point corresponding to the target pressure parameter; Performing differentiation processing on the pressure change curve to obtain a pressure change rate curve; Determining fault information of the compressor according to a curve similarity between the pressure change rate curve and a preset change rate curve corresponding to the target power stage, wherein the preset change rate curve includes a change rate standard curve and at least one fault type curve; The determining the fault information of the compressor according to the curve similarity between the pressure change rate curve and the preset change rate curve corresponding to the target working phase includes: If the similarity between the pressure change rate curve and the change rate standard curve is greater than a preset similarity threshold, it is determined that there is no fault in the target working phase of the compressor; If the similarity between the pressure change rate curve and the change rate standard curve is less than or equal to a preset similarity threshold, calculating the similarity between the pressure change rate curve and each of the fault type curves; Filtering out a target fault type curve having the greatest similarity to the pressure change rate curve from the fault type curve; Setting the preset fault information corresponding to the target fault type curve as the fault information of the target working phase of the compressor; If there is no target fault type curve with the greatest similarity, sending the fault information collection window carrying the pressure change rate curve to the user end; Receiving the fault information fed back by the user terminal based on the fault information collection window; The pressure change rate curve is set as a fault type curve, and the fault information is associated with the fault type curve for storage.

5. A compressor fault diagnosis device, characterized in that: The compressor fault diagnosis device comprises: one or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the steps in the compressor fault diagnosis method according to any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the compressor fault diagnosis method according to any one of claims 1 to 3.

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