Method and device for determining grease changing state of bearing

Abstract

The invention discloses a method and a device for determining a grease changing state of a bearing. The method comprises the steps that when it is determined that a target bearing executes grease changing operation, a lubricating grease state image at a grease outlet of the target bearing is acquired; establishing a coordinate system by taking the grease outlet center of the grease outlet as a coordinate origin, and establishing a lubricating grease state coordinate system corresponding to the lubricating grease state diagram; performing pixel deletion on the lubricating grease state image according to the lubricating grease state coordinate system to obtain a lubricating grease state image after pixel deletion; obtaining a target lubricating grease state image at a grease outlet of the target bearing according to the lubricating grease state image after pixel deletion; comparing the pixel of the target lubricating grease state image with a pixel set threshold value to obtain a comparison result; and obtaining the current grease changing state of the target bearing according to the comparison result. The method and the device solve the technical problem that the lubricating performance is affected due to the fact that the grease changing state is not monitored in the grease changing operation process of the bearing in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing grease replacement, and in particular to a method and device for determining the grease replacement state of a bearing. Background Art

[0002] In order to reduce the friction of rolling bearings during rolling, grease is usually supplied to the rolling bearings to form a separation oil film at the contact point between the rolling element and the raceway of the inner and outer rings of the bearings. However, after the bearings are filled with grease and run for a while, foreign impurities will enter the grease, and the grease will also harden due to oxidation and deterioration and the precipitation of base oil. The above reasons reduce the lubrication ability of the grease and cannot guarantee a good lubrication effect. Therefore, the grease in the bearing needs to be replaced regularly to ensure the lubrication effect. When replacing the grease, not only new grease should be added, but also the waste grease should be discharged to prevent the waste grease from affecting the filling of new grease or contaminating the new grease.

[0003] Most of the existing bearing lubrication and greasing schemes are based on the annual lubrication and grease injection volume of the bearing, and the bearing is greased at a fixed time and in a fixed quantity. There is a lack of detection of the grease change status, and it is difficult to ensure that the amount of new grease in the bearing is within a reasonable range. If the injection of new grease is stopped before the waste grease is completely discharged, the new and old grease in the bearing will be mixed, affecting the formation of the oil film, resulting in poor bearing lubrication and premature wear; if the waste grease has been completely discharged but new grease is still being injected, it will not only cause a waste of grease, but may also cause excess grease in the bearing, causing an increase in the bearing temperature rise, and then the grease softening, leading to grease leakage or oxidation deterioration, and ultimately affecting the lubrication performance. Therefore, it is particularly important to monitor the bearing grease change status. There are relatively few technologies for monitoring the bearing grease change status in the prior art. For example, although there are also methods for measuring grease in bearings in the prior art, they can only detect the content of grease in the bearing and cannot monitor the grease change status.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method and device for determining the grease change status of a bearing, so as to at least solve the technical problem in the related art that the grease change status is not monitored during the bearing grease change operation, thereby affecting the lubrication performance.

[0006] According to one aspect of an embodiment of the present invention, a method for determining a grease change status of a bearing is provided, comprising: when determining that a target bearing is to perform a grease change operation, obtaining a grease status image at a grease outlet of the target bearing, wherein the target bearing is a bearing to which grease needs to be added; establishing a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establishing a grease status coordinate system corresponding to the grease status image; performing pixel deletion on the grease status image according to the grease status coordinate system to obtain the grease status image after pixel deletion; obtaining a target grease status image at the grease outlet of the target bearing according to the grease status image after pixel deletion; comparing pixels of the target grease status image with a pixel set threshold to obtain a comparison result; and obtaining the current grease change status of the target bearing according to the comparison result.

[0007] Optionally, obtaining the grease status image at the grease outlet of the target bearing includes: when it is determined that the target bearing performs a grease change operation, triggering an image acquisition component to start; when it is determined that the image acquisition component has started successfully, using the image acquisition component to perform image acquisition on the grease outlet at a predetermined image acquisition frequency to obtain the grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

[0008] Optionally, a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state image is established, including: performing frame extraction processing on multiple frames of the grease state image at a predetermined frame extraction frequency to obtain partial images in the multiple frames of the grease state image; performing segmentation processing on the partial images to obtain the partial images after segmentation processing; a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the partial images after segmentation processing is established.

[0009] Optionally, pixels of the grease state image are pruned according to the grease state coordinate system to obtain the grease state image after pixel pruning, including: determining the maximum value of the ordinate of the grease state coordinate system; when the maximum value of the ordinate is less than or equal to a first preset value, pruning the outer two layers of pixel values ​​of the grease state image; when the maximum value of the ordinate is greater than the first preset value and less than or equal to a second preset value, pruning the pixels of the portion corresponding to the maximum value of the ordinate in the grease state image greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining portion according to the grease state coordinate system; when the maximum value of the ordinate is greater than the second preset value, pruning the pixels of the portion corresponding to the maximum value of the ordinate in the grease state image greater than a third preset value and less than or equal to the maximum value of the ordinate and the outer two layers of pixels of the remaining portion according to the grease state coordinate system, wherein the third preset value is the difference between half of the maximum value of the ordinate and the first preset value.

[0010] Optionally, the pixels of the target grease state image are compared with a pixel setting threshold to obtain a comparison result, including: obtaining a pixel average value of the target grease state image corresponding to the grease state image after pixel deletion; and comparing the pixel average value with the pixel setting threshold to obtain the comparison result.

[0011] Optionally, the pixel setting threshold includes: a first pixel setting threshold and a second pixel setting threshold, the first pixel setting threshold is greater than the second pixel setting threshold, and the current greasing state of the target bearing is obtained according to the comparison result, including: when the pixel average value is less than the second pixel setting threshold, determining that the current greasing state is an incomplete greasing state; when the pixel average value is greater than or equal to the second pixel setting threshold and less than the first pixel setting threshold, determining that the current greasing state is a secondary greasing complete state; when the pixel average value is greater than or equal to the first pixel setting threshold, determining that the current greasing state is a primary greasing complete state.

[0012] Optionally, the method for determining the greasing status of the bearing also includes: when the current greasing status is the incomplete greasing status, generating a first prompt message to prompt that the greasing operation on the target bearing needs to continue; when the current greasing status is the secondary greasing complete status, generating a second prompt message to prompt that the greasing operation on the target bearing can be paused under predetermined conditions; when the current greasing status is the primary greasing complete status, generating a third prompt message to prompt that the greasing operation on the target bearing should be stopped.

[0013] According to another aspect of an embodiment of the present invention, a device for determining the grease change status of a bearing is also provided, comprising: a first acquisition module, for acquiring a grease status image at a grease outlet of the target bearing when determining that a grease change operation is to be performed on the target bearing, wherein the target bearing is a bearing to which grease needs to be added; an establishment module, for establishing a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establishing a grease status coordinate system corresponding to the grease status diagram; a pixel deletion module, for performing pixel deletion on the grease status image according to the grease status coordinate system to obtain the grease status image after pixel deletion; a second acquisition module, for obtaining a target grease status image at the grease outlet of the target bearing according to the grease status image after pixel deletion; a comparison module, for comparing pixels of the target grease status image with a pixel set threshold to obtain a comparison result; and a third acquisition module, for obtaining the current grease change status of the target bearing according to the comparison result.

[0014] Optionally, the first acquisition module includes: a trigger unit, used to trigger the image acquisition component to start when it is determined that the target bearing performs a grease change operation; an image acquisition unit, used to use the image acquisition component to capture images of the grease outlet according to a predetermined image acquisition frequency when it is determined that the image acquisition component has been successfully started, so as to obtain the grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

[0015] Optionally, the establishment module includes: a frame extraction processing unit, used to perform frame extraction processing on multiple frames of the grease status image at a predetermined frame extraction frequency to obtain partial images in the multiple frames of the grease status image; a segmentation processing unit, used to perform segmentation processing on the partial image to obtain the partial image after segmentation processing; an establishment unit, used to establish a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establish a grease status coordinate system corresponding to the partial image after segmentation processing.

[0016] Optionally, the pixel deletion module includes: a first determination unit, used to determine the maximum value of the ordinate of the grease state coordinate system; a first deletion unit, used to delete the outer two layers of pixel values ​​of the grease state image when the maximum value of the ordinate is less than or equal to a first preset value; a second deletion unit, used to delete the pixels corresponding to the part of the grease state image whose maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining part according to the grease state coordinate system when the maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value; a third deletion unit, used to delete the pixels corresponding to the part of the grease state image whose maximum value of the ordinate is greater than the third preset value and less than or equal to the maximum value of the ordinate and the outer two layers of pixels of the remaining part according to the grease state coordinate system when the maximum value of the ordinate is greater than the second preset value, wherein the third preset value is the difference between half of the maximum value of the ordinate and the first preset value.

[0017] Optionally, the comparison module includes: an acquisition unit, used to acquire the pixel average value of the target grease state image corresponding to the grease state image after pixel deletion; and a comparison unit, used to compare the pixel average value with the pixel set threshold to obtain the comparison result.

[0018] Optionally, the third acquisition module includes: a first determination unit, used to determine that the current fat replacement state is an incomplete fat replacement state when the pixel average value is less than the second pixel setting threshold; a second determination unit, used to determine that the current fat replacement state is a secondary fat replacement complete state when the pixel average value is greater than or equal to the second pixel setting threshold and less than the first pixel setting threshold; a third determination unit, used to determine that the current fat replacement state is a primary fat replacement complete state when the pixel average value is greater than or equal to the first pixel setting threshold.

[0019] Optionally, the bearing grease change status determination device also includes: a first generating unit, used to generate a first prompt message when the current grease change status is the incomplete grease change status, to prompt the need to continue the grease change operation on the target bearing; a second generating unit, used to generate a second prompt message when the current grease change status is the secondary grease change complete status, to prompt that the grease change operation on the target bearing can be paused under predetermined conditions; a third generating unit, used to generate a third prompt message when the current grease change status is the primary grease change complete status, to prompt to stop the grease change operation on the target bearing.

[0020] According to one aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes any one of the above-mentioned methods for determining a grease change state of a bearing.

[0021] According to one aspect of an embodiment of the present invention, a processor is provided, wherein the processor is used to run a program, wherein when the program is run, any one of the above-mentioned methods for determining the grease change status of a bearing is executed.

[0022] According to one aspect of an embodiment of the present invention, there is provided a computer program product, comprising computer instructions, which, when executed by a processor, execute any one of the above-mentioned methods for determining a grease change state of a bearing.

[0023] In an embodiment of the present invention, when determining that a target bearing is to perform a grease change operation, a grease state image at a grease outlet of the target bearing is obtained, wherein the target bearing is a bearing to which grease needs to be added; a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state diagram is established; pixels of the grease state image are deleted according to the grease state coordinate system to obtain a grease state image after pixel deletion; a target grease state image at the grease outlet of the target bearing is obtained according to the grease state image after pixel deletion; pixels of the target grease state image are compared with a pixel set threshold to obtain a comparison result; and a current grease change state of the target bearing is obtained according to the comparison result. Through the technical solution provided by the present invention, the purpose of dynamically monitoring the bearing grease change status by using the bearing grease change monitoring technology, timely confirming the discharge status of the waste grease in the bearing, determining the grease change status by using the average pixel value as a characteristic indicator, and guiding the subsequent grease change operation is achieved, thereby realizing the technical effect of real-time monitoring and intelligent grease change, ensuring the normal lubrication of the bearing, improving the reliability and stability of the equipment, and further solving the technical problem in the related technology that the grease change status is not monitored during the bearing grease change operation, affecting the lubrication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a hardware structure block diagram of a mobile terminal of a method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of a method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0027] Figure 3 is a site layout diagram of a method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0028] Figure 4 is a flow chart of an optional method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0029] FIG5( a ) is a schematic diagram of pixel deletion of a method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0030] FIG5( b ) is a pixel-deleted principle diagram of an optional bearing grease change status determination method according to an embodiment of the present invention;

[0031] FIG5( c ) is a pixel-deleted principle diagram of another optional method for determining a grease change state of a bearing according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of a bearing grease change status determination device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] As introduced in the background technology, in the related art, the grease changing status is not monitored during the bearing grease changing operation, which affects the lubrication performance. In view of the above defects, a method and device for determining the grease changing status of a bearing, a computer readable storage medium, a processor and a computer program product are provided in an embodiment of the present invention.

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] The method embodiments provided in the embodiments of the present invention can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a method for determining a bearing grease change state according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0038] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the bearing grease change state determination method in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above network include but are not limited to the Internet, corporate intranets, local area networks, mobile communication networks and combinations thereof. The transmission device 106 is used to receive or send data via a network. The above network specific examples may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0039] According to an embodiment of the present invention, a method embodiment of a method for determining a grease changing status of a bearing is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0040] Figure 2 : is a flow chart of a method for determining a grease change state of a bearing according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0041] Step S202, when it is determined that the target bearing is to perform a grease change operation, a grease state image at a grease outlet of the target bearing is obtained, wherein the target bearing is a bearing that needs to be greased.

[0042] Optionally, the effects of the above-mentioned grease replacement may include: reducing friction and wear, reducing noise and vibration, maintaining the normal operating temperature of the bearing, and preventing corrosion and oxidation, thereby maintaining the good working condition of the bearing.

[0043] Figure 3 is a site layout diagram of a method for determining a grease change state of a bearing according to an embodiment of the present invention, such as Figure 3 As shown, when the bearing needs to be regreased, the sealing rings of the bearing grease injection port 1 and the bearing grease outlet 2 are released, wherein the bearing grease injection port 1 is used to connect the on-site grease pump and the constant pressure pump, and the lubrication pump and the constant pressure pump are connected with a double-head pipe. When the lubrication pump is greased, the lubrication pump is turned off, and the constant pressure pump starts the constant pressure grease discharge operation.

[0044] In this embodiment, when performing a grease change operation on the target bearing, a grease status image at the grease outlet of the bearing that needs to be greased can be obtained, which can help the operator understand the grease condition of the bearing and determine whether the bearing has insufficient or excessive lubrication, so as to take corresponding measures in time to ensure the normal operation of the bearing and extend its service life.

[0045] Step S204, establishing a coordinate system with the grease outlet center as the coordinate origin, and establishing a grease state coordinate system corresponding to the grease state diagram.

[0046] In this embodiment, a grease state coordinate system corresponding to the grease state diagram is established, which can more intuitively understand and analyze the performance characteristics of the grease. Different grease states are represented by coordinate points in the coordinate system. According to the performance of the grease under different conditions, the application scope and performance of the grease can be determined, so as to select suitable grease and improve the lubrication effect of the equipment.

[0047] Step S206, performing pixel deletion on the grease state image according to the grease state coordinate system to obtain a pixel-deleted grease state image.

[0048] In this embodiment, the grease state image can be pixel-pruned according to the grease state coordinate system. The grease state image after pixel pruned can reduce the size of the image, reduce the complexity of the image, and make the image easier to store and transmit. Pixel pruned can also remove some insignificant details, highlight the main features, and make the image clearer and easier to understand.

[0049] Step S208, obtaining a target grease state image at the grease outlet of the target bearing according to the grease state image after pixel deletion.

[0050] In this embodiment, the target grease status image at the grease outlet of the target bearing can be obtained based on the grease status image after pixel deletion to understand the distribution and usage status of the grease during the operation of the bearing. The above image can be used to determine whether the grease is evenly applied to the bearing surface and whether there is too much or too little grease, which helps to timely adjust the amount of grease used and the application method.

[0051] Step S210, comparing the pixels of the target grease state image with the pixel setting threshold to obtain a comparison result.

[0052] In this embodiment, by comparing the pixels of the target grease status image with the pixel setting threshold, the quality and usage of the grease can be understood, and it can be determined whether the status of the grease is normal or whether it needs to be replaced.

[0053] It should be noted that the above pixel setting threshold refers to setting a threshold value to determine whether two pixels are similar or different when comparing pixels of the target image, and can be set based on experience.

[0054] Step S212, obtaining the current grease changing status of the target bearing according to the comparison result.

[0055] In this embodiment, the current grease change status of the target bearing can be known based on the comparison result. If the comparison result shows that the grease lubrication status of the bearing is not good, it may be necessary to replace or add grease to ensure the normal operation of the bearing and extend its service life.

[0056] As can be seen from the above, in an embodiment of the present invention, when determining that a target bearing is to be subjected to a grease change operation, a grease state image at the grease outlet of the target bearing is obtained, wherein the target bearing is a bearing to which grease needs to be added; a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state diagram is established; pixels of the grease state image are deleted according to the grease state coordinate system to obtain a grease state image after pixel deletion; a target grease state image at the grease outlet of the target bearing is obtained according to the grease state image after pixel deletion; pixels of the target grease state image are compared with a pixel set threshold to obtain a comparison result; the current grease change state of the target bearing is obtained according to the comparison result, thereby achieving the purpose of dynamically monitoring the bearing grease change state by using the bearing grease change monitoring technology, timely confirming the discharge state of the waste grease in the bearing, using the average pixel value as a characteristic indicator to determine the grease change state, and guiding subsequent grease change operations, thereby realizing real-time monitoring and intelligent grease change, ensuring the technical effect of normal lubrication of the bearing, and improving the reliability and stability of the equipment.

[0057] The technical solution provided by the embodiment of the present invention solves the technical problem in the related art that the grease changing status is not monitored during the bearing grease changing operation, which affects the lubrication performance.

[0058] According to the above embodiment of the present invention, a grease status image at the grease outlet of a target bearing is obtained, including: when it is determined that the target bearing performs a grease change operation, triggering an image acquisition component to start; when it is determined that the image acquisition component has been successfully started, using the image acquisition component to perform image acquisition on the grease outlet at a predetermined image acquisition frequency to obtain a grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

[0059] It should be noted that the above grease replacement operation is specifically to connect the lubrication pump to inject 1.2G of grease into the bearing in order to ensure the performance of the bearing. 0 g grease, different working conditions, different types of bearings corresponding to G 0 Different from the above, some of the bad grease is discharged by grease drainage. Then, a constant pressure pump is connected to continuously discharge the bad grease with the help of pressure difference until the color of the grease at the grease outlet changes from black to yellow. When the pixel average value reaches the set threshold, the grease drainage is complete.

[0060] Specifically, the above G 0 The initial grease amount for a new bearing is calculated as follows: G 0 =KDB, where K is the fat addition coefficient, set to N is the real-time speed, N m is the rated speed, G 0 is the grease mass, in g; D is the bearing outer diameter, in mm; B is the bearing inner diameter, in mm.

[0061] like Figure 3 As shown, when the grease replacement operation begins, the on-site monitoring 3 starts to work, and its monitoring range is the bearing grease outlet. The purpose is to transmit the real-time image data of the bearing grease outlet to the PC terminal 4 for further analysis. In order to ensure the shooting quality, a supplementary light source 5 is installed on-site to enhance the image quality of the grease outlet.

[0062] In this embodiment, a high-definition camera (i.e., an image acquisition component) can be arranged at the grease outlet on site to capture the grease status of the bearing grease outlet, so as to facilitate timely monitoring of the grease condition. When it is determined that the target bearing is to perform a grease change operation, the image acquisition component is triggered to start, that is, the action starts when the grease is changed, and the high-definition camera is used to capture images of the grease outlet at a predetermined image acquisition frequency, and the acquired video is transmitted to the PC, which can record and analyze the grease status, reduce the time of manual operation, and improve work efficiency and accuracy.

[0063] According to the above-mentioned embodiment of the present invention, a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state diagram is established, including: performing frame extraction processing on multiple frames of grease state images at a predetermined frame extraction frequency to obtain partial images in the multiple frames of grease state images; performing segmentation processing on the partial images to obtain partial images after segmentation processing; a coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the partial images after segmentation processing is established.

[0064] Figure 4 is a flow chart of an optional method for determining the grease change state of a bearing according to an embodiment of the present invention, such as Figure 4 As shown, the computer terminal extracts frames from the acquired bearing grease outlet grease video to obtain image information, segments the grease outlet grease image, segments the grease outlet grease image, and then establishes coordinates for the acquired segmented grease outlet grease image.

[0065] Specifically, the coordinate system is established by taking the center of the grease outlet as the coordinate origin, with the horizontal axis being the X-axis and the vertical axis being the Y-axis.

[0066] In this embodiment, the real-time acquired video is firstly extracted at a rate of 1 frame every 3 seconds, and then the extracted grease outlet image is segmented, the background is removed, and a coordinate system is established for the segmented image. This allows the state changes of the grease to be observed more clearly. Establishing a grease state coordinate system can facilitate subsequent data processing and analysis, and help to accurately locate and identify the characteristics of the grease state.

[0067] According to the above embodiment of the present invention, pixels of the grease state image are deleted according to the grease state coordinate system to obtain the grease state image after pixel deletion, including: determining the maximum value of the ordinate of the grease state coordinate system; when the maximum value of the ordinate is less than or equal to a first preset value, deleting the outer two layers of pixel values ​​of the grease state image; when the maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value, deleting the pixels of the corresponding part of the grease state image whose maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining part according to the grease state coordinate system; when the maximum value of the ordinate is greater than the second preset value, deleting the pixels of the grease state image whose maximum value of the ordinate is greater than a third preset value and less than or equal to the maximum value of the ordinate and the outer two layers of pixels of the remaining part according to the grease state coordinate system, wherein the third preset value is the difference between half of the maximum value of the ordinate and the first preset value.

[0068] like Figure 3 As shown, the image extraction, segmentation and pixel deletion operations are implemented on the PC side 4. The specific deletion method is as follows:

[0069] FIG5(a) is a schematic diagram of pixel deletion according to a method for determining a grease change state of a bearing according to an embodiment of the present invention. As shown in FIG5(a), when Y max When the size is ≤2cm, the pixel values ​​of the two outer layers are deleted.

[0070] FIG5(b) is a schematic diagram of a pixel deletion principle of an optional bearing grease change state determination method according to an embodiment of the present invention. As shown in FIG5(b), when Y max ∈(2cm,4cm], delete Y∈(Y max -2,Y max ] part and the two outer layers of pixels of the remaining part.

[0071] FIG5(c) is a schematic diagram of a pixel deletion principle of another optional bearing grease change status determination method according to an embodiment of the present invention. As shown in FIG5(c), when Y max >4 cm, delete The pixels of the first part and the two outer layers of pixels of the remaining part.

[0072] In this embodiment, the pixels on both sides of the edge can be deleted after the coordinate system is established. The grease at the grease outlet falls downward under the influence of pressure and its own gravity. The pixels are deleted according to the maximum value of the ordinate of the grease state coordinate system. max When the maximum value of the ordinate is less than or equal to 2 cm (i.e., the first preset value), the outer two layers of pixel values ​​of the grease state image are deleted, and the Y maxWhen the value of Y is greater than 2 cm and less than or equal to 4 cm (i.e., the second preset value), the pixels corresponding to the part with the maximum value of the ordinate greater than 2 cm and less than or equal to 4 cm in the grease state image and the outer two layers of pixels of the remaining part are deleted. max When the maximum value of the ordinate in the grease state image is greater than 4 cm, the grease state coordinate system is used to delete the grease state image. (ie, the third preset value) and is less than or equal to the maximum value of the vertical coordinate and the two outer layers of pixels of the remaining part.

[0073] According to the above embodiment of the present invention, the pixels of the target grease state image are compared with the pixel setting threshold to obtain a comparison result, including: obtaining the pixel average value of the target grease state image corresponding to the grease state image after pixel deletion; comparing the pixel average value with the pixel setting threshold to obtain a comparison result.

[0074] In this embodiment, after deleting the pixels, the average pixel value is used as the feature indicator, the average pixel value of the remaining part is calculated, and compared with the set state threshold, so as to determine whether the grease state image has reached the target state, and quickly and effectively detect and evaluate the grease state.

[0075] Specifically, according to experience, the weights are set to 0.53, 0.82, and 0.2, that is, S = R*0.53+G*0.82+B*0.2, corresponding to the average pixel value K of the remaining part m The calculation formula is as follows: Among them, S i is the pixel value of point i, n is the total number of pixels, and then the obtained pixel average value is compared with the set threshold.

[0076] According to the above embodiment of the present invention, the pixel setting threshold includes: a first pixel setting threshold and a second pixel setting threshold, the first pixel setting threshold is greater than the second pixel setting threshold, and the current greasing state of the target bearing is obtained according to the comparison result, including: when the pixel average value is less than the second pixel setting threshold, determining that the current greasing state is an incomplete greasing state; when the pixel average value is greater than or equal to the second pixel setting threshold and less than the first pixel setting threshold, determining that the current greasing state is a secondary greasing complete state; when the pixel average value is greater than or equal to the first pixel setting threshold, determining that the current greasing state is a primary greasing complete state.

[0077] like Figure 4 As shown in the figure, the grease change status is divided into incomplete grease change N, secondary grease change complete Y and primary grease change complete Q. The color representation (RGB channel) of the grease used in the bearing is basically between [255,215,0] and [255,250,0]. The threshold K is set based on experience. 1 ∈[311,344],K 2∈[210,260], the specific value is selected according to the color of the grease to judge its real-time grease change status. m <K 2 When K m ∈[K 2 ,K 1 ), it is in the secondary grease change complete state Y, when K m ≥K 1 When , it is in the first-level complete grease change state Q.

[0078] In this embodiment, the current grease replacement status of the bearing is determined based on the comparison result. m (i.e., pixel average) is less than K 2 (i.e., the second pixel setting threshold) is not completely replaced. m Greater than or equal to K 2 and less than K 1 (i.e., the first pixel setting threshold) is the secondary fat replacement complete state, and at K m Greater than or equal to K 1 When the oil level is 0.01, it is in the first-level complete grease change state.

[0079] According to the above-mentioned embodiment of the present invention, the method for determining the greasing status of the bearing also includes: when the current greasing status is an incomplete greasing status, generating a first prompt message to prompt that the greasing operation on the target bearing needs to continue; when the current greasing status is a secondary greasing complete status, generating a second prompt message to prompt that the greasing operation on the target bearing can be paused under predetermined conditions; when the current greasing status is a primary greasing complete status, generating a third prompt message to prompt that the greasing operation on the target bearing should be stopped.

[0080] In this embodiment, a signal prompt of the corresponding status can be given according to the current greasing status of the bearing. When the current greasing status is an incomplete greasing status, the status prompt light is on (i.e., the first prompt message), and the greasing continues. When the current greasing status is a second-level complete greasing status, a voice reminder is given (i.e., the second prompt message), and the greasing can be manually paused as needed. When the current greasing status is a first-level complete greasing status, a voice reminder is given (i.e., the third prompt message), and the greasing operation is automatically stopped.

[0081] It should be noted that the difference between the first-level full grease change Q and the second-level full grease change Y is that in the Y state, the grease content is within a reasonable range and the bad grease content is low, so the bearing can operate normally, but the disadvantage is that the grease change cycle will be shorter; in the Q state, while ensuring the normal and stable operation of the bearing, the grease change cycle will be relatively longer. The specific choice of Y or Q should be based on actual conditions.

[0082] Through the technical solution provided by the above embodiment of the present invention, a bearing grease change monitoring method without stopping is provided, including placing monitoring equipment on site, obtaining the real-time grease discharge status of the bearing grease outlet and transmitting it to the PC end, segmenting the captured grease outlet image on the PC end, establishing a coordinate system, deleting edge pixels, calculating pixel averages, etc., and finally determining the bearing grease change status according to the relationship between the pixel average and the set threshold, and giving a corresponding signal prompt. The method includes five key steps: image acquisition, image segmentation, coordinate system establishment, pixel processing and calculation, and bearing grease change status judgment. It can realize real-time dynamic monitoring of the grease change status, prompt the grease change status in time, and provide a new solution for intelligent grease change, while ensuring the grease change effect, improving the grease change efficiency. The visual method is applied to the grease change monitoring of the bearing, the grease change status of the bearing is monitored in real time, and the status evaluation is performed in time and accurately, which significantly improves the grease change efficiency and realizes the intelligent grease change of the bearing. While ensuring the complete grease change of the bearing, the waste of grease is avoided. The following beneficial effects are achieved: 1) It can monitor and judge the bearing grease change status in real time, and give corresponding signal prompts for different grease change status, thus avoiding the waste of grease and incomplete grease change; 2) The visual method is applied to bearing grease change monitoring, and the grease change status is evaluated by judging the grease color at the grease outlet. This method provides a new idea for bearing grease change monitoring without stopping the machine; 3) The proposed method of judging the bearing grease change status based on the pixel average value can realize intelligent grease change and reduce the burden on on-site personnel. While improving the grease change efficiency, it also reduces enterprise costs.

[0083] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0084] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0085] According to an embodiment of the present invention, there is also provided a bearing grease change status determination device for implementing the above-mentioned bearing grease change status determination method. Figure 6 Schematic diagram of a bearing grease change status determination device according to an embodiment of the present invention. Figure 6 As shown, the device comprises: a first acquisition module 601, a building module 603, a pixel deletion module 605, a second acquisition module 607, a comparison module 609 and a third acquisition module 611. The device for determining the grease change state of the bearing is described below.

[0086] The first acquisition module 601 is used to acquire a grease status image at a grease outlet of a target bearing when determining that a grease change operation is to be performed on the target bearing, wherein the target bearing is a bearing that needs to be greased.

[0087] The establishment module 603 is used to establish a coordinate system with the grease outlet center as the coordinate origin, and establish a grease state coordinate system corresponding to the grease state diagram.

[0088] The pixel deletion module 605 is used to perform pixel deletion on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel deletion.

[0089] The second acquisition module 607 is used to obtain a target grease state image at a grease outlet of a target bearing according to the grease state image after pixel deletion.

[0090] The comparison module 609 is used to compare the pixels of the target grease state image with the pixel setting threshold to obtain a comparison result.

[0091] The third acquisition module 611 is used to obtain the current grease change status of the target bearing according to the comparison result.

[0092] It should be noted here that the above-mentioned first acquisition module 601, establishment module 603, pixel deletion module 605, second acquisition module 607, comparison module 609 and third acquisition module 611 correspond to steps S202 to S212 in the above-mentioned embodiments, and the six modules are the same as the instances and application scenarios implemented by the corresponding steps, but are not limited to the contents disclosed in the above-mentioned embodiments.

[0093] As can be seen from the above, in the scheme recorded in the above-mentioned embodiment of the present invention, firstly, the first acquisition module can be used to acquire the grease state image at the grease outlet of the target bearing when determining that the target bearing is to perform a grease change operation, wherein the target bearing is a bearing that needs to be greased; then, the establishment module can be used to establish a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establish a grease state coordinate system corresponding to the grease state diagram; then, the pixel deletion module can be used to perform pixel deletion on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel deletion; secondly, the second acquisition module can be used to perform pixel deletion on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel deletion; For example, a target grease status image at the grease outlet of the target bearing can be obtained; a comparison module can also be used to compare the pixels of the target grease status image with a pixel set threshold to obtain a comparison result; finally, a third acquisition module can be used to obtain the current grease change status of the target bearing according to the comparison result, thereby achieving the purpose of dynamically monitoring the bearing grease change status by using bearing grease change monitoring technology, timely confirming the discharge status of waste grease in the bearing, using the average pixel value as a characteristic indicator to determine the grease change status, and guiding subsequent grease change operations, thereby realizing real-time monitoring and intelligent grease change, ensuring the technical effect of normal lubrication of the bearing, and improving the reliability and stability of the equipment.

[0094] The technical solution provided by the embodiment of the present invention solves the technical problem in the related art that the grease changing status is not monitored during the bearing grease changing operation, which affects the lubrication performance.

[0095] In an optional embodiment, the first acquisition module includes: a trigger unit, which is used to trigger the image acquisition component to start when it is determined that the target bearing performs a grease change operation; an image acquisition unit, which is used to use the image acquisition component to capture images of the grease outlet according to a predetermined image acquisition frequency when it is determined that the image acquisition component has been successfully started, so as to obtain a grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

[0096] In an optional embodiment, an establishing module includes: a frame extraction processing unit, used to perform frame extraction processing on multiple frames of grease status images at a predetermined frame extraction frequency to obtain partial images in the multiple frames of grease status images; a segmentation processing unit, used to perform segmentation processing on partial images to obtain partial images after segmentation processing; and an establishing unit, used to establish a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establish a grease status coordinate system corresponding to the partial images after segmentation processing.

[0097] In an optional embodiment, the pixel deletion module includes: a first determination unit, which is used to determine the maximum value of the ordinate of the grease state coordinate system; a first deletion unit, which is used to delete the outer two layers of pixel values ​​of the grease state image when the maximum value of the ordinate is less than or equal to a first preset value; a second deletion unit, which is used to delete the pixels corresponding to the part of the grease state image whose maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining part according to the grease state coordinate system when the maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value; a third deletion unit, which is used to delete the pixels corresponding to the part of the grease state image whose maximum value of the ordinate is greater than the third preset value and less than or equal to the maximum value of the ordinate and the outer two layers of pixels of the remaining part according to the grease state coordinate system when the maximum value of the ordinate is greater than the second preset value, wherein the third preset value is the difference between half of the maximum value of the ordinate and the first preset value.

[0098] In an optional embodiment, the comparison module includes: an acquisition unit, used to obtain the pixel average value of the target grease state image corresponding to the grease state image after pixel deletion; and a comparison unit, used to compare the pixel average value with a pixel set threshold to obtain a comparison result.

[0099] In an optional embodiment, the third acquisition module includes: a first determination unit, used to determine that the current fat replacement state is an incomplete fat replacement state when the pixel average value is less than the second pixel setting threshold value; a second determination unit, used to determine that the current fat replacement state is a secondary fat replacement complete state when the pixel average value is greater than or equal to the second pixel setting threshold value and less than the first pixel setting threshold value; a third determination unit, used to determine that the current fat replacement state is a primary fat replacement complete state when the pixel average value is greater than or equal to the first pixel setting threshold value.

[0100] In an optional embodiment, the bearing grease change status determination device also includes: a first generating unit, which is used to generate a first prompt message when the current grease change status is an incomplete grease change status, to prompt that the grease change operation on the target bearing needs to continue; a second generating unit, which is used to generate a second prompt message when the current grease change status is a secondary grease change complete status, to prompt that the grease change operation on the target bearing can be paused under predetermined conditions; and a third generating unit, which is used to generate a third prompt message when the current grease change status is a primary grease change complete status, to prompt that the grease change operation on the target bearing should be stopped.

[0101] According to one aspect of an embodiment of the present invention, a processor is provided, and the processor is used to run a program, wherein when the program is run, any one of the above-mentioned methods for determining the grease change status of a bearing is executed.

[0102] According to one aspect of an embodiment of the present invention, there is provided a computer program product, comprising computer instructions, which, when executed by a processor, execute any one of the above-mentioned methods for determining a grease change state of a bearing.

[0103] According to one aspect of an embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein the program executes any one of the above-mentioned methods for determining a grease change state of a bearing.

[0104] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the communication devices in a communication device group.

[0105] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: when determining that the target bearing performs a grease change operation, obtaining a grease status image at the grease outlet of the target bearing, wherein the target bearing is a bearing that requires grease; establishing a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establishing a grease status coordinate system corresponding to the grease status diagram; performing pixel deletion on the grease status image according to the grease status coordinate system to obtain a pixel-deleted grease status image; obtaining a target grease status image at the grease outlet of the target bearing according to the pixel-deleted grease status image; comparing pixels of the target grease status image with a pixel set threshold to obtain a comparison result; and obtaining the current grease change status of the target bearing according to the comparison result.

[0106] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: when it is determined that the target bearing performs a grease change operation, triggering the image acquisition component to start; when it is determined that the image acquisition component is successfully started, using the image acquisition component to capture images of the grease outlet at a predetermined image acquisition frequency to obtain a grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

[0107] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: performing frame extraction processing on multiple frames of grease status images at a predetermined frame extraction frequency to obtain partial images in the multiple frames of grease status images; performing segmentation processing on the partial images to obtain the partial images after segmentation processing; establishing a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and establishing a grease status coordinate system corresponding to the partial images after segmentation processing.

[0108] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: determining the maximum value of the ordinate of the grease state coordinate system; when the maximum value of the ordinate is less than or equal to a first preset value, deleting the outer two layers of pixel values ​​of the grease state image; when the maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value, deleting the pixels corresponding to the portion of the grease state image whose maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining portion according to the grease state coordinate system; when the maximum value of the ordinate is greater than the second preset value, deleting the pixels corresponding to the portion of the grease state image whose maximum value of the ordinate is greater than a third preset value and less than or equal to the maximum value of the ordinate and the outer two layers of pixels of the remaining portion according to the grease state coordinate system, wherein the third preset value is the difference between half of the maximum value of the ordinate and the first preset value.

[0109] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: obtaining a pixel average value of a target grease state image corresponding to the grease state image after pixel deletion; comparing the pixel average value with a pixel set threshold to obtain a comparison result.

[0110] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: when the pixel average value is less than a second pixel setting threshold, determining that the current fat replacement state is an incomplete fat replacement state; when the pixel average value is greater than or equal to the second pixel setting threshold and less than the first pixel setting threshold, determining that the current fat replacement state is a secondary fat replacement complete state; when the pixel average value is greater than or equal to the first pixel setting threshold, determining that the current fat replacement state is a primary fat replacement complete state.

[0111] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: when the current greasing state is an incomplete greasing state, a first prompt message is generated to prompt that the greasing operation on the target bearing needs to continue; when the current greasing state is a secondary greasing complete state, a second prompt message is generated to prompt that the greasing operation on the target bearing can be paused under predetermined conditions; when the current greasing state is a primary greasing complete state, a third prompt message is generated to prompt that the greasing operation on the target bearing needs to be stopped.

[0112] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0113] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0115] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0116] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0117] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0118] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for determining the grease change status of a bearing, characterized in that: include: When determining that a target bearing is to be subjected to a grease change operation, obtaining a grease state image at a grease outlet of the target bearing, wherein the target bearing is a bearing to which grease needs to be added; A coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state diagram is established; Performing pixel deletion on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel deletion; Obtaining a target grease state image at the grease outlet of the target bearing according to the grease state image after pixel deletion; Comparing the pixels of the target grease state image with a pixel setting threshold to obtain a comparison result; The current grease change status of the target bearing is obtained according to the comparison result.

2. The method for determining the grease change status of a bearing according to claim 1, characterized in that: Acquiring a grease state image at a grease outlet of the target bearing, comprising: When it is determined that the target bearing is to be subjected to a grease replacement operation, triggering the image acquisition component to start; When it is determined that the image acquisition component is successfully started, the image acquisition component is used to acquire images of the grease outlet at a predetermined image acquisition frequency to obtain the grease status image, wherein the image acquisition component is an image acquisition component arranged at the grease outlet.

3. The method for determining the grease change status of a bearing according to claim 1, characterized in that: A coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the grease state diagram is established, including: Performing frame extraction processing on the multiple frames of the grease state image at a predetermined frame extraction frequency to obtain partial images of the multiple frames of the grease state image; Performing segmentation processing on the partial image to obtain the partial image after segmentation processing; A coordinate system is established with the grease outlet center of the grease outlet as the coordinate origin, and a grease state coordinate system corresponding to the partial image after segmentation processing is established.

4. The method for determining the grease change status of a bearing according to claim 1, characterized in that: Pixel pruning is performed on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel pruning, including: Determining the maximum value of the ordinate of the grease state coordinate system; When the maximum value of the ordinate is less than or equal to a first preset value, deleting the outer two layers of pixel values ​​of the grease state image; When the maximum value of the ordinate is greater than the first preset value and less than or equal to the second preset value, the pixels of the portion corresponding to the maximum value of the ordinate greater than the first preset value and less than or equal to the second preset value and the outer two layers of pixels of the remaining portion in the grease state image are deleted according to the grease state coordinate system; When the maximum value of the vertical coordinate is greater than the second preset value, the pixels whose maximum value of the vertical coordinate is greater than a third preset value and less than or equal to the maximum value of the vertical coordinate and the outer two layers of pixels of the remaining part in the grease state image are deleted according to the grease state coordinate system, wherein the third preset value is the difference between half of the maximum value of the vertical coordinate and the first preset value.

5. The method for determining the grease change status of a bearing according to claim 1, characterized in that: Comparing the pixels of the target grease state image with the pixel setting threshold to obtain a comparison result includes: Obtaining a pixel average value of the target grease state image corresponding to the grease state image after pixel deletion; The pixel average value is compared with the pixel setting threshold to obtain the comparison result.

6. The method for determining the grease change status of a bearing according to claim 5, characterized in that: The pixel setting threshold includes: a first pixel setting threshold and a second pixel setting threshold, the first pixel setting threshold is greater than the second pixel setting threshold, and the current grease replacement state of the target bearing is obtained according to the comparison result, including: When the pixel average value is less than the second pixel setting threshold, determining that the current fat replacement state is an incomplete fat replacement state; When the pixel average value is greater than or equal to the second pixel setting threshold value and less than the first pixel setting threshold value, determining that the current fat-changing state is a secondary fat-changing complete state; When the pixel average value is greater than or equal to the first pixel setting threshold, it is determined that the current fat-changing state is a first-level fat-changing complete state.

7. The method for determining the grease change status of a bearing according to claim 6, characterized in that: Also includes: When the current greasing state is the incomplete greasing state, generating first prompt information to prompt that the greasing operation needs to be continued on the target bearing; When the current greasing state is the secondary greasing complete state, generating a second prompt message to prompt that the greasing operation can be suspended for the target bearing under a predetermined condition; When the current greasing state is the first-level greasing complete state, a third prompt message is generated to prompt to stop performing the greasing operation on the target bearing.

8. A device for determining the grease change status of a bearing, characterized in that: include: A first acquisition module is used to acquire a grease state image at a grease outlet of a target bearing when determining that the target bearing is to perform a grease change operation, wherein the target bearing is a bearing that needs to be greased; An establishing module, used to establish a coordinate system with the grease outlet center of the grease outlet as the coordinate origin, and to establish a grease state coordinate system corresponding to the grease state diagram; A pixel deletion module, used for performing pixel deletion on the grease state image according to the grease state coordinate system to obtain the grease state image after pixel deletion; A second acquisition module is used to obtain a target grease state image at the grease outlet of the target bearing according to the grease state image after pixel deletion; A comparison module, used for comparing the pixels of the target grease state image with a pixel setting threshold to obtain a comparison result; The third acquisition module is used to obtain the current grease change status of the target bearing according to the comparison result.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method for determining the grease change state of a bearing according to any one of claims 1 to 7.

10. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by the processor, the method for determining the grease change status of the bearing according to any one of claims 1 to 7 is performed.

Images