Method, device, medium and equipment for detecting shedding of damping oil of ball motor

Abstract

The invention provides a method, a device, a medium and equipment for detecting shedding of damping oil of a ball motor. The method comprises the following steps: creating a ball motor simulation model; simulation parameters are obtained, the ball motor simulation model is simulated based on the simulation parameters, and simulation flow rates at the positions of all the ball grooves are obtained; determining a corresponding flow velocity threshold value when damping oil of the ball motor is washed away; whether damping oil of the ball motor falls off or not is detected according to the flow velocity threshold value and the simulated flow velocities at the positions of the ball grooves; therefore, the simulation flow velocity of the position of the ball groove can be obtained by constructing the ball motor simulation model and analyzing the simulation model; and then the corresponding flow velocity threshold value when the damping oil of the ball motor is washed away is determined through experimental data, so that whether the damping oil is washed away or not can be accurately judged by comparing the simulated flow velocity with the flow velocity threshold value, and thus the quality of the camera module is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of camera module detection, and in particular to a method, device, medium and equipment for detecting the shedding of ball motor damping oil. Background Art

[0002] Currently, terminal device manufacturers are placing increasingly stringent demands on camera modules, such as requiring zoom functionality. Generally, a drive motor is required to achieve this function. Many camera modules use ball bearing motors as their internal drive motors. For lubrication, damping oil is added to the ball bearing grooves within the ball bearing motors.

[0003] During the camera module production process, the motor is washed with water to remove dust and foreign matter to ensure image quality. However, it is unknown whether this process removes the damping oil inside the ball bearing motor.

[0004] Based on this, there is currently a need for a method that can detect whether the damping oil inside the ball motor has been cleaned to ensure the quality of the camera module. Summary of the Invention

[0005] In response to the problems existing in the prior art, the embodiments of the present invention provide a method, device, medium and equipment for detecting the shedding of the damping oil in the ball motor, so as to solve or partially solve the technical problem in the prior art that when the camera module is washed with water, it is impossible to detect whether the damping oil inside the ball motor has been cleaned off, and thus the quality of the camera module cannot be ensured.

[0006] The present invention provides a method for detecting the shedding of damping oil in a ball motor, the method comprising:

[0007] Create a ball motor simulation model;

[0008] Acquiring simulation parameters, simulating the ball motor simulation model based on the simulation parameters, and obtaining a simulated flow velocity at each ball groove position;

[0009] Determine the flow rate threshold at which the ball motor damping oil is flushed out;

[0010] Whether the ball motor damping oil has fallen off is detected according to the flow rate threshold and the simulated flow rate at each ball groove position.

[0011] In the above solution, the creation of the ball motor simulation model includes:

[0012] Constructing an initial model of the ball motor according to the actual size of the ball motor;

[0013] Determining a fluid domain of the ball motor initial model; the fluid domain includes pores inside the ball motor and an air domain outside the ball motor;

[0014] constructing a corresponding fluid model based on the fluid domain;

[0015] The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain the ball motor simulation model.

[0016] In the above solution, obtaining simulation parameters includes:

[0017] Acquire an actual water speed corresponding to the actual flushing of the ball motor, and set the actual water speed as the water inlet speed of the fluid model;

[0018] Obtaining the simulation material, wherein the simulation material is liquid water;

[0019] Get simulation analysis models and analysis modes.

[0020] In the above solution, determining the flow rate threshold corresponding to when the ball motor damping oil is flushed out includes:

[0021] Controlling water to flow into the other end of the prefabricated test sample at an initial flow rate, gradually increasing the initial flow rate by a preset flow rate increment until the damping oil is flushed off, and obtaining a target flow rate at this time;

[0022] The flow rate threshold is determined according to the target flow rate and the cross-sectional area of ​​the experimental sample; wherein,

[0023] One end of the experimental sample is a streamlined boss, and damping oil is placed on the streamlined boss; the material of the experimental sample is the same as the material of the ball motor slot, and the structure of the experimental sample is the same as the structure of the ball motor slot.

[0024] In the above solution, determining the flow rate threshold according to the target flow rate and the cross-sectional area of ​​the experimental sample includes:

[0025] According to the formula The flow rate threshold V is determined; Q is the target flow rate, and S is the cross-sectional area of ​​the experimental sample.

[0026] In the above solution, detecting whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at each ball groove position includes:

[0027] If it is determined that the simulated flow velocities at the positions of the ball grooves are all less than the flow rate threshold, it is determined that the damping oil of the control motor has not fallen off.

[0028] A second aspect of the present invention provides a device for detecting the loss of damping oil in a ball motor, the device comprising:

[0029] Create a unit for creating a ball motor simulation model;

[0030] a simulation unit, configured to obtain simulation parameters, simulate the ball motor simulation model based on the simulation parameters, and obtain a simulated flow velocity at each ball groove position;

[0031] a determination unit, configured to determine a flow rate threshold corresponding to when the ball motor damping oil is flushed away;

[0032] The detection unit is used to detect whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at the position of each ball groove.

[0033] In the above solution, the creation unit is specifically used to:

[0034] Constructing an initial model of the ball motor according to the actual size of the ball motor;

[0035] Determining a fluid domain of the initial model of the ball motor; the fluid domain is the pores inside the ball motor and the air domain outside the ball motor;

[0036] constructing a corresponding fluid model based on the fluid domain;

[0037] The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain the ball motor simulation model.

[0038] According to a third aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

[0039] A fourth aspect of the present invention provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the methods described in the first aspect when executing the program.

[0040] The present invention provides a method, device, medium and equipment for detecting the shedding of ball motor damping oil, the method comprising: creating a ball motor simulation model; obtaining simulation parameters, simulating the ball motor simulation model based on the simulation parameters, and obtaining a simulated flow rate at each ball groove position; determining a flow rate threshold corresponding to when the ball motor damping oil is flushed away; detecting whether the ball motor damping oil has fallen off based on the flow rate threshold and the simulated flow rate at each ball groove position; in this way, by constructing a ball motor simulation model and analyzing the simulation model, the simulated flow rate at the ball groove position can be obtained; then, through experimental data, the flow rate threshold corresponding to when the ball motor damping oil is flushed away can be determined, and then by comparing the simulated flow rate and the flow rate threshold, it can be accurately judged whether the damping oil has been flushed away, thereby ensuring the quality of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0042] Figure 1 A schematic flow chart of a method for detecting the loss of damping oil in a ball motor according to an embodiment of the present invention is shown;

[0043] Figure 2 A schematic diagram of an exploded structure of a ball motor according to an embodiment of the present invention is shown;

[0044] Figure 3 A schematic structural diagram of a ball motor according to an embodiment of the present invention is shown;

[0045] Figure 4 A schematic diagram of an initial simulation model of a ball motor according to an embodiment of the present invention is shown;

[0046] Figure 5 A schematic diagram of a fluid domain according to an embodiment of the present invention is shown;

[0047] Figure 6 A schematic diagram of a meshed fluid domain according to an embodiment of the present invention is shown;

[0048] Figure 7 A schematic diagram of a fluid domain after an inlet assembly is added according to one embodiment of the present invention is shown;

[0049] Figure 8 Three cross-sectional schematic diagrams of a ball motor simulation model according to one embodiment of the present invention are shown;

[0050] Figure 9A schematic diagram of a flow rate threshold experiment system according to an embodiment of the present invention is shown;

[0051] Figure 10 A schematic diagram showing simulation results of a ball groove position on section A of a ball motor simulation model according to one embodiment of the present invention is shown;

[0052] Figure 11 A schematic diagram showing simulation results of another ball groove position at section A of a ball motor simulation model according to an embodiment of the present invention is shown;

[0053] Figure 12 A schematic diagram showing simulation results of a ball groove position on section B of a ball motor simulation model according to one embodiment of the present invention is shown;

[0054] Figure 13 A schematic diagram showing simulation results of another ball groove position at section B of a ball motor simulation model according to an embodiment of the present invention is shown;

[0055] Figure 14 A schematic diagram showing simulation results of a ball groove position on section C of a ball motor simulation model according to one embodiment of the present invention is shown;

[0056] Figure 15 A schematic diagram showing simulation results of another ball groove position at section C of a ball motor simulation model according to an embodiment of the present invention is shown;

[0057] Figure 16 shows a schematic diagram of the shape of damping oil according to one embodiment of the present invention;

[0058] Figure 17 A schematic structural diagram of a device for detecting the shedding of damping oil in a ball motor according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0059] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0060] The present invention provides a method for detecting the shedding of the damping oil in a ball motor. The method mainly uses a fluid analysis method and uses "flow rate" as an important parameter to determine whether the damping oil has been cleaned. Specifically, during the water washing process, water will enter the interior of the motor along the motor gap and eventually reach the vicinity of the damping oil in the ball groove. During the analysis process, the flow rate of the motor damping oil is monitored. If the critical flow rate (flow rate threshold) is reached, it can be determined that the damping oil has been cleaned; otherwise, it is determined that the damping oil will not be cleaned and will not fall off. Figure 1 As shown, the method mainly includes the following steps:

[0061] S110, creating a ball motor simulation model.

[0062] The actual structure of the ball motor is as follows Figure 2 As shown, the ball motor includes: a housing 11, a frame 12, balls 13, a carrier 14 and a support 15. Figure 3 As shown, due to the presence of gaps in the ball motor, the damping oil may be washed off during the water washing process. Therefore, the present invention needs to create a ball motor simulation model based on the actual structure of the ball motor.

[0063] In one embodiment, creating a ball motor simulation model includes:

[0064] Construct an initial model of the ball motor according to its actual size;

[0065] Determine the fluid domain of the ball motor initial model; the fluid domain refers to the pores inside the ball motor and the air domain outside the ball motor;

[0066] Construct a corresponding fluid model based on the fluid domain;

[0067] The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain a ball motor simulation model.

[0068] Specifically, the initial model of the ball motor can be created based on the 3D modeling software. Figure 4 As shown in . After the ball motor initial model is constructed, the fluid domain of the ball motor initial model is obtained; wherein the fluid domain is the area that the fluid can reach. In the ball motor, the area that the fluid can reach includes the gap inside the motor and the air area outside the motor. The fluid domain can be as follows Figure 5 shown.

[0069] When creating a fluid domain, a geometry that completely encompasses the ball motor can be created within the original ball motor model. Then, using Boolean operations, the newly created geometry is subtracted from the ball motor geometry. The remaining area is the desired fluid domain. Boolean operations refer to operations within geometric modeling features that generate new geometric features or volumes by adding, subtracting, or intersecting two or more geometries.

[0070] It can be seen that the fluid model is actually a geometric body. This is because when creating the fluid domain, the fluid created is much larger than the ball motor. The part beyond the ball motor outline is air. Then, through the Boolean subtraction operation from the ball motor geometry, the ball motor geometry is subtracted, and the gap inside the motor is left, finally obtaining a geometric body.

[0071] Then import this geometry into the meshing software and use the meshing software to mesh the geometry. The meshed fluid model is as follows Figure 6 shown.

[0072] The inlet component and the outlet component are added to the meshed fluid model. The fluid model after adding the inlet component is as follows Figure 7 As shown; Figure 7 The water inlet assembly is marked 71.

[0073] After the above processing, the ball motor simulation model is obtained.

[0074] S111, obtaining simulation parameters, simulating the ball motor simulation model based on the simulation parameters, and obtaining a simulated flow velocity at each ball groove position.

[0075] In one embodiment, obtaining simulation parameters includes:

[0076] Obtain the actual water speed corresponding to the actual flushing of the ball motor, and set the actual water speed as the water inlet speed of the fluid model;

[0077] obtaining a simulation material, where the simulation material is liquid water;

[0078] Get simulation analysis models and analysis modes.

[0079] Specifically, before simulating the ball motor simulation model, it is necessary to obtain simulation parameters. These parameters include: water inlet velocity, simulation material, simulation analysis model, and analysis mode.

[0080] After obtaining the simulation parameters, first set the analysis mode to Steady. Then, set the analysis model to the k-epsilon turbulence model and the simulation material to liquid water.

[0081] Furthermore, in order to ensure the accuracy of the simulation results, the present invention refers to the actual water speed corresponding to the actual flushing of the ball motor when determining the water speed at the water inlet, and sets the actual water speed as the water speed at the water inlet of the fluid model.

[0082] After setting the simulation parameters, the ball motor simulation model is simulated based on the simulation parameters to obtain the simulated flow velocity at each ball groove position.

[0083] It should be noted that the damping oil component in the initial model of the ball motor needs to be deleted during simulation analysis. The main reasons are as follows:

[0084] First, the amount of damping oil in the ball motor is very small, so small that it can even be replaced by particles. Moreover, due to the irregular shape of the damping oil, the turbulent flow field will interfere with the simulation analysis results.

[0085] Second, if damping oil is included in the model, the fluid domain at the damping oil location cannot be obtained when acquiring the fluid domain, making it impossible to analyze the flow velocity at that location. In other words, the presence of damping oil makes it difficult to converge the analysis results.

[0086] Based on the above considerations, in this embodiment, when simulating the ball motor simulation model, it is necessary to delete the damping oil component from the simulation model to ensure the accuracy of the simulation analysis.

[0087] Since there are multiple ball bearing grooves in the ball bearing motor, in order to improve the accuracy of the simulation analysis, the present invention sets three sections passing through the ball bearing grooves, namely sections A, B and C; it is necessary to obtain the simulated flow rate at the ball bearing groove position in the three sections. Figure 8 shown.

[0088] S112 , determining a flow rate threshold corresponding to when the ball motor damping oil is flushed away.

[0089] As described above, the present invention primarily monitors the simulated flow velocity of the motor damping oil and compares it with a critical flow velocity. If the critical flow velocity (threshold flow velocity) is reached, the damping oil is determined to have been flushed. Therefore, it is also necessary to determine the flow velocity threshold at which the ball motor damping oil is flushed.

[0090] In one embodiment, determining a flow rate threshold corresponding to when the ball motor damping oil is flushed out includes:

[0091] Controlling water to flow into the other end of the prefabricated test sample at an initial flow rate, gradually increasing the initial flow rate by a preset flow rate increment until the damping oil is flushed off, and obtaining a target flow rate at this time;

[0092] The flow rate threshold is determined according to the target flow rate and the cross-sectional area of ​​the experimental sample; wherein,

[0093] One end of the experimental sample is a streamlined boss, on which damping oil is placed; the material of the experimental sample is the same as that of the ball motor slot, and the structure of the experimental sample is the same as that of the ball motor slot.

[0094] In one embodiment, determining the flow rate threshold according to the target flow rate and the cross-sectional area of ​​the test sample includes:

[0095] According to the formula Determine the flow rate threshold V; Q is the target flow rate, and S is the cross-sectional area of ​​the experimental sample.

[0096] Specifically, in order to accurately determine the corresponding flow rate when the damping oil is flushed off, the embodiment of the present invention needs to first construct an experimental mechanism, such as Figure 9 As shown, the experimental structure includes: a prefabricated experimental sample 91 and a water outlet device 92; one end of the prefabricated experimental sample 91 is a streamlined boss 93, and damping oil 94 is placed on the streamlined boss 93; the other end of the prefabricated experimental sample 91 is connected to the water outlet device 92 through a water pipe, and a flow meter 95 is also installed on the water pipe.

[0097] During the experiment, the water flow is controlled to flow into the other end of the prefabricated experimental sample 91 at an initial flow rate, and the initial flow rate is gradually increased by a preset flow rate increment until the damping oil is flushed off, thereby obtaining the target flow rate at this time.

[0098] Then, the flow domain threshold is determined according to the target flow rate and the cross-sectional area of ​​the prefabricated experimental sample 91 , wherein the flow rate threshold determined in the embodiment of the present invention is 38 m / s.

[0099] S113 , detecting whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at each ball groove position.

[0100] After the flow rate threshold is determined, the ball motor damping oil can be detected based on the flow rate threshold and the simulated flow rate at each ball groove position to determine whether it has fallen off, including:

[0101] If it is determined that the simulated flow velocities at the positions of the ball grooves are all less than the flow velocity threshold, it is determined that the damping oil of the control motor has not fallen off.

[0102] Specifically, as mentioned above, in order to improve the accuracy of simulation analysis, this embodiment sets three sections passing through the ball groove, namely sections A, B and C; there are two ball groove positions in section A, and the simulated flow rates are as follows: Figure 10 and 11 As shown in the figure, the maximum simulated flow velocity at the ball groove position of section A is 7m / s; there are two ball groove positions on section B, and the simulated flow velocities are as follows: Figure 12 and 13As shown in the figure, the maximum simulated flow velocity at the ball groove position in section B is 3m / s; there are two ball groove positions in section C, and the simulated flow velocities are as follows: Figure 14 and 15 As shown in the figure, the maximum simulated flow velocity at the ball groove position on the C section is 5 m / s.

[0103] It can be seen that the simulated flow velocities at the ball groove positions of the three sections are all less than the flow rate threshold, indicating that the damping oil in the ball motor of the camera module will not be affected by the existing water washing conditions, the damping oil will not be washed off, and the quality of the camera module is intact.

[0104] If the simulated flow velocity at the ball groove position of any of the three sections is greater than the flow velocity threshold, it means that the damping oil in the ball motor of the camera module will be affected by the existing water washing conditions.

[0105] In this embodiment, a ball motor simulation model is constructed and analyzed to obtain a simulated flow rate at the ball groove position. Then, the flow rate threshold corresponding to when the ball motor damping oil is flushed away is determined through experimental data. Then, by comparing the simulated flow rate and the flow rate threshold, it can be accurately determined whether the damping oil has been flushed off, thereby ensuring the quality of the camera module.

[0106] In addition, the embodiment of the present invention uses "flow rate" as the judgment basis, which has the following advantages over the conventional method of using "force" as the judgment basis:

[0107] In conventional methods, when analyzing whether the damping oil has been washed away, the damping oil adhesion force is generally used for analysis, and the analysis will focus on the damping oil adhesion force and damping oil mechanical parameter testing. However, Figure 16 As shown, the damping oil has an irregular shape and its amount in the ball motor is very small (it can even be replaced by particles). In this case, if the damping oil adhesion is simply analyzed, no analysis results may be obtained, which will make the analysis impossible.

[0108] When using flow rate parameters for analysis, it will not be affected by the shape and size of the damping oil. By simulating the fluid model, the simulated flow rate can be obtained. Then, by comparing the simulated flow rate and the flow rate threshold, it can be accurately determined whether the damping oil has been flushed off, thereby ensuring the quality of the camera module.

[0109] Based on the same inventive concept as in the above embodiment, this embodiment also provides a device for detecting the falling off of the ball motor damping oil, such as Figure 17 As shown, the device includes:

[0110] A creation unit 171 is used to create a ball motor simulation model;

[0111] A simulation unit 172 is configured to obtain simulation parameters, simulate the ball motor simulation model based on the simulation parameters, and obtain a simulated flow velocity at each ball groove position;

[0112] A determining unit 173 is configured to determine a flow rate threshold corresponding to when the ball motor damping oil is flushed away;

[0113] The detection unit 174 is used to detect whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at the position of each ball groove.

[0114] In one embodiment, the creating unit 171 is specifically configured to:

[0115] Constructing an initial model of the ball motor according to the actual size of the ball motor;

[0116] Determining a fluid domain of the ball motor initial model; the fluid domain includes pores inside the ball motor and an air domain outside the ball motor;

[0117] constructing a corresponding fluid model based on the fluid domain;

[0118] The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain the ball motor simulation model.

[0119] The simulation unit 172 is specifically used for:

[0120] Acquire an actual water speed corresponding to the actual flushing of the ball motor, and set the actual water speed as the water inlet speed of the fluid model;

[0121] Obtaining the simulation material, wherein the simulation material is liquid water;

[0122] Get simulation analysis models and analysis modes.

[0123] The determining unit 173 is specifically configured to:

[0124] Controlling water to flow into the other end of the prefabricated test sample at an initial flow rate, gradually increasing the initial flow rate by a preset flow rate increment until the damping oil is flushed off, and obtaining a target flow rate at this time;

[0125] The flow rate threshold is determined according to the target flow rate and the cross-sectional area of ​​the experimental sample; wherein,

[0126] One end of the experimental sample is a streamlined boss, and damping oil is placed on the streamlined boss; the material of the experimental sample is the same as the material of the ball motor slot, and the structure of the experimental sample is the same as the structure of the ball motor slot.

[0127] The determining unit 173 is further configured to:

[0128] According to the formula The flow rate threshold V is determined; Q is the target flow rate, and S is the cross-sectional area of ​​the experimental sample.

[0129] The detection unit 174 is specifically used for:

[0130] If it is determined that the simulated flow velocities at the positions of the ball grooves are all less than the flow rate threshold, it is determined that the damping oil of the control motor has not fallen off.

[0131] Since the device described in the embodiments of the present invention is used to implement the method for detecting the loss of damping oil in a ball motor according to the embodiments of the present invention, the specific structure and variations of the device are readily apparent to those skilled in the art based on the methods described in the embodiments of the present invention, and therefore, a detailed description thereof will not be repeated here. All devices used in the methods of the embodiments of the present invention fall within the scope of protection of the present invention.

[0132] Based on the same inventive concept, this embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, any step of the method described above is implemented.

[0133] Based on the same inventive concept, this embodiment provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above methods are implemented.

[0134] Through one or more embodiments of the present invention, the present invention has the following beneficial effects or advantages:

[0135] The present invention provides a method, device, medium and equipment for detecting the shedding of ball motor damping oil, the method comprising: creating a ball motor simulation model; obtaining simulation parameters, simulating the ball motor simulation model based on the simulation parameters, and obtaining a simulated flow rate at each ball groove position; determining a flow rate threshold corresponding to when the ball motor damping oil is flushed away; detecting whether the ball motor damping oil has fallen off based on the flow rate threshold and the simulated flow rate at each ball groove position; in this way, by constructing a ball motor simulation model and analyzing the simulation model, the simulated flow rate at the ball groove position can be obtained; then, through experimental data, the flow rate threshold corresponding to when the ball motor damping oil is flushed away can be determined, and then by comparing the simulated flow rate and the flow rate threshold, it can be accurately judged whether the damping oil has been flushed away, thereby ensuring the quality of the camera module.

[0136] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general-purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing this type of system. In addition, the present invention is not directed to any specific programming language. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the above description of specific languages ​​is for the purpose of disclosing the best mode of the present invention.

[0137] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0138] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0139] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition may be divided into multiple submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed herein may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0140] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination.

[0141] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components in the gateway, proxy server, or system according to an embodiment of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0142] It should be noted that the above embodiments illustrate rather than limit the invention, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0143] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0144] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for detecting the shedding of ball motor damping oil, characterized in that: The method comprises: Create a ball motor simulation model; Acquiring simulation parameters, simulating the ball motor simulation model based on the simulation parameters, and obtaining a simulated flow velocity at each ball groove position; Determine the flow rate threshold at which the ball motor damping oil is flushed out; Whether the ball motor damping oil has fallen off is detected according to the flow rate threshold and the simulated flow rate at each ball groove position.

2. The method according to claim 1, wherein The creation of the ball motor simulation model includes: Constructing an initial model of the ball motor according to the actual size of the ball motor; Determining a fluid domain of the initial model of the ball motor; the fluid domain is the pores inside the ball motor and the air domain outside the ball motor; constructing a corresponding fluid model based on the fluid domain; The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain the ball motor simulation model.

3. The method according to claim 1, wherein The obtaining of simulation parameters includes: Obtaining an actual water speed corresponding to the actual flushing of the ball motor, and setting the actual water speed as the water inlet speed of the fluid model; Obtaining the simulation material, wherein the simulation material is liquid water; Get simulation analysis models and analysis modes.

4. The method according to claim 1, wherein Determine the flow rate threshold at which the ball motor damping oil is flushed out, including: Controlling water to flow into the other end of the prefabricated test sample at an initial flow rate, gradually increasing the initial flow rate by a preset flow rate increment until the damping oil is flushed off, and obtaining a target flow rate at this time; The flow rate threshold is determined according to the target flow rate and the cross-sectional area of ​​the experimental sample; wherein, One end of the experimental sample is a streamlined boss, and damping oil is placed on the streamlined boss; the material of the experimental sample is the same as the material of the ball motor slot, and the structure of the experimental sample is the same as the structure of the ball motor slot.

5. The method according to claim 4, wherein Determining the flow rate threshold according to the target flow rate and the cross-sectional area of ​​the experimental sample includes: According to the formula The flow rate threshold V is determined; Q is the target flow rate, and S is the cross-sectional area of ​​the experimental sample.

6. The method according to claim 1, wherein Detecting whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at each ball groove position includes: If it is determined that the simulated flow velocities at the positions of the ball grooves are all less than the flow rate threshold, it is determined that the damping oil of the control motor has not fallen off.

7. A device for detecting the shedding of ball motor damping oil, characterized in that: The device comprises: Create a unit for creating a ball motor simulation model; a simulation unit, configured to obtain simulation parameters, simulate the ball motor simulation model based on the simulation parameters, and obtain a simulated flow velocity at each ball groove position; a determination unit, configured to determine a flow rate threshold corresponding to when the ball motor damping oil is flushed away; The detection unit is used to detect whether the ball motor damping oil has fallen off according to the flow rate threshold and the simulated flow rate at the position of each ball groove.

8. The device according to claim 7, wherein The creation unit is specifically used for: Constructing an initial model of the ball motor according to the actual size of the ball motor; Determining a fluid domain of the ball motor initial model; the fluid domain includes pores inside the ball motor and an air domain outside the ball motor; constructing a corresponding fluid model based on the fluid domain; The fluid model is meshed, and a water inlet component and a water outlet component are added to the meshed fluid model to obtain the ball motor simulation model.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method according to any one of claims 1 to 6 are implemented.

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