Oil viscosity measuring device and method thereof

Abstract

The invention provides an oil viscosity measuring device and method. The oil viscosity measuring device comprises a shell, a first circuit board and a probe. The first circuit board is arranged in the shell. The probe comprises a probe shell, a first coil, a second coil, a measuring column and a coil framework. One end of the probe shell is connected with the shell, and the other end of the probe shell is provided with a first opening for oil to enter. The coil framework is arranged in the probe shell, a flow channel is formed in the coil framework, the flow channel is communicated with the first opening, and the first coil and the second coil are electrically connected with the first circuit board respectively. The measuring column is movably arranged in the flow channel and moves back and forth in the first direction, when the induction current of the first coil is zero, the measuring column is located at the first position, and when the induction current of the second coil is zero, the measuring column is located at the second position. According to the invention, the viscosity measurement of the oil can be realized, the influence of environmental factors on the measurement result is reduced, and the measurement accuracy is improved.

Description

Technical Field

[0001] This application relates to the field of oil viscosity measurement technology, and more specifically, to an oil viscosity measuring device and an oil viscosity measuring method. Background Technology

[0002] Oil viscosity is an important indicator for measuring oil quality, reflecting its ability to resist deformation during flow. Higher viscosity makes oil flow more difficult, while lower viscosity makes it easier to flow. Viscosity is not only a measure of a fluid's "consistency," but also a crucial parameter for assessing oil performance, lubrication effectiveness, and transmission efficiency. Oil viscosity directly affects lubrication, component wear, and operating temperature variations. Appropriate viscosity ensures good lubrication, reduces friction and wear, improves efficiency, and extends equipment lifespan. Therefore, accurately measuring oil viscosity is essential for assessing equipment's operating condition.

[0003] Therefore, improving the accuracy of oil viscosity measurement is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides an oil viscosity measuring device and method, which can realize the measurement of oil viscosity, reduce the influence of environmental factors on the measurement results, and help improve the accuracy of the measurement.

[0005] This application is achieved through the following technical solution: In a first aspect, this application provides an oil viscosity measuring device, which includes a housing, a first circuit board, and a probe. The first circuit board is disposed within the housing. The probe includes a probe housing, a first coil, a second coil, a measuring column, and a coil frame. In a first direction, one end of the probe housing is connected to the housing, and the other end of the probe housing has a first opening for oil to enter. The first direction is parallel to the axial direction of the probe housing. The coil frame is disposed within the probe housing, and a flow channel is formed inside the coil frame, which communicates with the first opening. The first coil and the second coil are respectively sleeved at both ends of the coil frame in the first direction, and the first coil and the second coil are respectively electrically connected to the first circuit board. The measuring column is movably disposed within the flow channel and moves back and forth along the first direction. When the induced current of the first coil is 0, the measuring column is located in a first position; when the induced current of the second coil is 0, the measuring column is located in a second position. When moving from the first position to the second position, the first circuit board inputs current to the first coil to drive the measuring column to move, while the second coil is not energized but generates an induced current. When moving from the second position to the first position, the first circuit board inputs current to the second coil to drive the measuring column to move, and the first coil is not energized but generates an induced current.

[0006] The technical solution of this application embodiment provides a first opening at the other end of the probe housing, with the flow channel of the coil frame connected to the first opening, allowing oil to enter the flow channel. Simultaneously, a measuring column is movably positioned within the flow channel along a first direction. A first coil drives the measuring column to move from a first position to a second position, and a second coil drives the measuring column to move from the second position to the first position. A first circuit board records the round-trip time of the measuring column between the first and second positions. The first circuit board can derive the oil viscosity based on a pre-generated standard oil viscosity curve (which represents the oil viscosity value corresponding to each round-trip time of the measuring column), thus achieving oil viscosity measurement, reducing the influence of environmental factors on the measurement results, and improving measurement accuracy.

[0007] In some embodiments, the measuring column is provided with a first through hole, which extends through both end faces of the measuring column along a first direction.

[0008] In the technical solution of this application embodiment, the measuring column is disposed within the flow channel. To reduce the risk of deviation when the measuring column moves along the first direction, the gap between the measuring column and the inner wall of the flow channel is small. By providing a first through hole in the measuring column, oil can pass through the first through hole, allowing oil to enter the other end of the flow channel from one end through the first through hole, which helps to increase the speed at which the oil fills the flow channel. Simultaneously, during the movement of the measuring column within the flow channel, the oil can flow within the first through hole, reducing the resistance of the oil to the movement of the measuring column, thus improving the stability of the measuring column's movement. Furthermore, increasing the contact area between the oil and the measuring column helps to improve the accuracy of measuring the oil viscosity.

[0009] In some embodiments, in the first direction, the outer peripheral surfaces at both ends of the measuring column are conical surfaces.

[0010] The technical solution of this application embodiment sets the outer peripheral surfaces of both ends of the measuring column as conical surfaces. During the movement of the measuring column in the flow channel, the oil can flow along the conical surfaces, reducing the resistance of the oil to prevent the measuring column from moving, which is beneficial to improving the stability of the measuring column movement. At the same time, it increases the contact area between the oil and the measuring column, which is beneficial to improving the accuracy of measuring the viscosity of the oil.

[0011] In some embodiments, the probe further includes a probe top cover and a probe bottom cover, which are respectively connected to both ends of the coil frame in a first direction. The probe bottom cover has a second through hole that connects to the first opening and the flow channel. In the first position, the measuring column abuts against the probe bottom cover. In the second position, the measuring column abuts against the probe top cover.

[0012] The technical solution of this application embodiment connects the first opening and the flow channel through a second through hole, allowing oil to enter the flow channel. Simultaneously, the probe bottom cover abuts against the measuring column in the first position, and the probe top cover abuts against the measuring column in the second position, reducing the risk of the measuring column moving out of the flow channel and improving the reliability of the oil viscosity measuring device.

[0013] In some embodiments, the probe further includes a spring coil, which is sleeved on the outer peripheral surface of the probe bottom cover and located between the probe bottom cover and the probe housing.

[0014] The technical solution of this application embodiment improves the reliability of probe bottom cover installation by setting a spring ring between probe bottom cover and probe outer shell, that is, by using the spring ring to achieve an interference fit between probe bottom cover and probe outer shell. This improves the reliability of probe top cover installation and thus improves the reliability of probe top cover and measuring column installation.

[0015] In some embodiments, the probe further includes a first coil outer ring, a second coil outer ring, a first gasket, and a second gasket. The first coil outer ring separates the first coil from the probe housing, and the second coil outer ring separates the second coil from the probe housing. In a first direction, the first gasket is disposed between the first coil and the first coil outer ring, and the second gasket is disposed between the second coil and the second coil outer ring.

[0016] The technical solution of this application embodiment improves the reliability of the installation of the first and second coils by providing a first coil outer ring to accommodate the first coil and a second coil outer ring to accommodate the second coil. Simultaneously, providing a first gasket between the first coil and the first coil outer ring, and a second gasket between the second coil and the second coil outer ring, reduces the risk of damage to the first and second coils during installation, thereby improving the reliability of the oil viscosity measuring device.

[0017] In some embodiments, the probe further includes a second circuit board and a third pad. The second circuit board is disposed inside the probe housing, and the first coil and the second coil are electrically connected to the second circuit board, respectively. The second circuit board is electrically connected to the first circuit board. There are two third pads, which are respectively disposed on both sides of the second circuit board in a first direction.

[0018] The technical solution of this application embodiment connects the first coil and the second coil electrically via the second circuit board, and the second circuit board is electrically connected to the first circuit board. Compared with the first coil and the second coil being directly electrically connected to the first circuit board, this shortens the length of a single wire harness, reduces the risk of the wire harness being damaged, improves the reliability of the connection between the first coil and the second coil and the first circuit board, and also helps to reduce the difficulty of maintenance.

[0019] In some embodiments, the probe further includes a sealing ring, which is fitted onto the outer peripheral surface of the probe housing.

[0020] The technical solution of this application embodiment reduces the risk of oil leakage by fitting a sealing ring onto the outer peripheral surface of the probe housing.

[0021] Secondly, this application provides an oil viscosity measurement method, applied to an oil viscosity measurement device as described in any of the above embodiments. The oil viscosity measurement method includes moving a measuring column to a first position; passing a first current through a first circuit board to a first coil to drive the measuring column from the first position to a second position; passing a first current through a second coil through the first circuit board to drive the measuring column from the second position to the first position; recording the total reciprocating motion time of the measuring column through the first circuit board; and performing fuzzy identification between the total reciprocating motion time and a pre-generated standard oil viscosity curve to generate a target viscosity of the oil to be measured.

[0022] The technical solution of this application embodiment improves the accuracy of oil viscosity measurement by calibrating the position of the measuring column before it is moved to a first position. A first coil drives the measuring column from the first position to a second position, and a second coil drives it from the second position to the first position. A first circuit board records the round-trip time between the first and second positions. The first circuit board can derive the oil viscosity based on a pre-generated standard oil viscosity curve, thus achieving oil viscosity measurement, reducing the influence of environmental factors on the measurement results, and improving measurement accuracy.

[0023] In some embodiments, moving the measuring column to the first position includes passing a second current through a first circuit board to a first coil to drive the measuring column to the first position, wherein the current direction of the first current is opposite to that of the second current.

[0024] The technical solution of this application embodiment drives the measuring column to move to a first position through the first coil. Before the measuring column measures the oil viscosity, the position of the measuring column is calibrated, which helps to improve the accuracy of measuring the oil viscosity.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1A schematic diagram showing the insertion of an oil viscosity measuring device into an oil pipeline according to some embodiments of this application; Figure 2 This is an exploded view of the structure of the oil viscosity measuring device provided in some embodiments of this application; Figure 3 A schematic diagram showing the measuring column of the oil viscosity measuring device provided in some embodiments of this application in a first position; Figure 4 A schematic diagram showing the measuring column of the oil viscosity measuring device provided in some embodiments of this application in a second position; Figure 5 This is a schematic diagram of the structure of the measuring column provided in some embodiments of this application; Figure 6 Flowcharts of oil viscosity measurement methods provided in some embodiments of this application; Figure 7 A flowchart for moving the measuring column to a first position is provided for some embodiments of this application; Figure 8 This is a schematic diagram of a pre-generated standard oil viscosity curve provided for some embodiments of this application.

[0028] Icons: 1-Oil viscosity measuring device; 10-Housing shell; 20-First circuit board; 30-Probe; 31-Probe housing; 311-First opening; 32-First coil; 321-First coil outer ring; 322-First gasket; 33-Second coil; 331-Second coil outer ring; 332-Second gasket; 34-Measuring column; 341-First through hole; 342-Conical surface; 35-Coil frame; 351-Flow channel; 352-Body; 353-Protrusion; 36-Probe top cover; 37-Probe bottom cover; 371-Second through hole; 38-Spring ring; 39-Second circuit board; 391-Third gasket; 40-Sealing ring; X-First direction. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0031] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0034] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0035] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram showing the insertion of an oil viscosity measuring device into an oil pipeline according to some embodiments of this application. Figure 2 This is an exploded view of the structure of the oil viscosity measuring device provided in some embodiments of this application. Figure 3 This is a schematic diagram showing the measuring column of the oil viscosity measuring device provided in some embodiments of this application in a first position. Figure 4This is a schematic diagram showing the measuring column of an oil viscosity measuring device provided in some embodiments of this application in a second position. Embodiments of this application provide an oil viscosity measuring device 1, which includes a housing 10, a first circuit board 20, and a probe 30. The first circuit board 20 is disposed within the housing 10. The probe 30 includes a probe housing 31, a first coil 32, a second coil 33, a measuring column 34, and a coil frame 35. In a first direction X, one end of the probe housing 31 is connected to the housing 10, and the other end of the probe housing 31 has a first opening 311 for oil to enter. The first direction X is parallel to the axial direction of the probe housing 31. The coil frame 35 is disposed within the probe housing 31, and a flow channel 351 is formed inside the coil frame 35, communicating with the first opening 311. The first coil 32 and the second coil 33 are respectively sleeved at both ends of the coil frame 35 in the first direction X, and the first coil 32 and the second coil 33 are respectively electrically connected to the first circuit board 20. The measuring column 34 is movably disposed within the flow channel 351 and reciprocates along the first direction X. When the induced current of the first coil 32 is 0, the measuring column 34 is located in the first position; when the induced current of the second coil 33 is 0, the measuring column 34 is located in the second position. When moving from the first position to the second position, the first circuit board 20 inputs current to the first coil 32 to drive the measuring column 34 to move, while the second coil 33 is de-energized and generates an induced current. When moving from the second position to the first position, the first circuit board 20 inputs current to the second coil 33 to drive the measuring column 34 to move, while the first coil 32 is de-energized and generates an induced current.

[0036] In some embodiments, the oil pipeline may be provided with a mounting hole. The oil viscosity measuring device 1 is inserted into the mounting hole, so that the probe 30 extends into the oil pipeline through the mounting hole. The oil in the oil pipeline enters the inner cavity of the probe housing 31 through the first opening 311 and then enters the flow channel 351 inside the coil frame 35. When the measuring column 34 moves back and forth in the first direction X in the flow channel 351, the measuring column 34 comes into contact with the oil.

[0037] In some embodiments, the outer casing 10 may be made of metal, plastic, or the like.

[0038] In some embodiments, the first circuit board 20 is disposed within the housing 10, and the disposal method may include welding, gluing, bolting, etc.

[0039] In some embodiments, the first direction X can be represented by the direction indicated by the letter X in the figure. The first direction X can be parallel to the direction of gravity, or it can intersect the direction of gravity. For example, the first direction X can be perpendicular to the direction of gravity. That is, when the oil viscosity measuring device 1 is inserted into the mounting hole, the outer casing 10 can be located above, below, or on the same plane as the mounting hole.

[0040] In some embodiments, one end of the probe housing 31 is connected to the housing 10, and the connection method can be welding, gluing, bolting, integral molding, etc.

[0041] In some embodiments, the probe housing 31 may be made of metal, plastic, or the like.

[0042] In some embodiments, in the first direction X, the probe housing 31 has a first opening 311 at the end opposite to the probe 30. The first opening 311 can be formed integrally with the probe housing 31, or formed by machining after the probe housing 31 is formed.

[0043] In some embodiments, the axis of the probe housing 31 is parallel to the first direction X.

[0044] In some embodiments, the coil frame 35 is disposed inside the probe housing 31, and the disposal method may include gluing, welding, bolting, etc.

[0045] In some embodiments, the probe housing 31 has an internal cavity, and the coil frame 35 is disposed within the internal cavity. A flow channel 351 is formed inside the coil frame 35. The shape of the first opening 311 of the probe housing 31 can correspond to the shape of the opening of the flow channel 351, allowing oil to directly enter the flow channel 351 through the first opening 311. Alternatively, the first opening 311 of the probe housing 31 can be larger, allowing the first coil 32, the second coil 33, the measuring column 34, and the coil frame 35 to be disposed within the probe housing 31 through the first opening 311. A connecting channel is provided between the first opening 311 and the flow channel 351, allowing oil to enter the flow channel 351 through the first opening 311 and the connecting channel, thereby reducing the risk of oil leakage to the outside of the coil frame 35.

[0046] In some embodiments, the coil frame 35 is provided with a flow channel 351 inside. The flow channel 351 can be integrally formed with the coil frame 35, or it can be formed by machining after the coil frame 35 is formed.

[0047] In some embodiments, the coil frame 35 may include a body 352 and a protrusion 353, the body 352 extending along a first direction X, and the axis of the body 352 being parallel to the first direction X. A flow channel 351 extending along the first direction X is formed inside the body 352.

[0048] The body 352 can be a hollow cylinder. The protrusion 353 protrudes radially from the outer circumference of the body 352. The protrusion 353 can be a hollow disk, and the body 352 and the protrusion 353 can be integrally formed.

[0049] The protrusion 353 can be located at the center of the body 352 in the first direction X. The protrusion 353 is radially away from the outer surface of the body 352 and can abut against the inner wall of the probe housing 31. The abutment can be direct or indirect.

[0050] When the coil frame 35 is disposed on the probe housing 31, in the first direction X, one end of the body 352 abuts against the inner wall of the probe housing 31, and the other end of the body 352 can abut against the probe housing 31 or against the component that closes the first opening 311.

[0051] The first coil 32 and the second coil 33 are respectively sleeved on both ends of the coil frame 35 in the first direction X. The first coil 32 is sleeved on the outer peripheral surface of the body 352, and the first coil 32 abuts against the surface of the body 352 away from the shell in the first direction X. The first coil 32 is sleeved on the outer peripheral surface of the body 352, and the second coil 33 abuts against the surface of the body 352 facing the shell in the first direction X.

[0052] In some embodiments, the first coil 32 can be electrically connected to the first circuit board 20 via a wire harness. The electrical connection can be a direct electrical connection or an electrical connection via a wire harness to an adapter component, after which the adapter component is electrically connected to the first circuit board 20 via a wire harness.

[0053] In some embodiments, the second coil 33 can be electrically connected to the first circuit board 20 via a wire harness. The electrical connection can be a direct electrical connection or an electrical connection via a wire harness to an adapter component, after which the adapter component is electrically connected to the first circuit board 20 via a wire harness.

[0054] In some embodiments, the measuring column 34 is movably disposed in the flow channel 351 along a first direction X. The principle of movement can be that the first circuit board 20 supplies a first current to the first coil 32, de-energizing the second coil 33. Through electromagnetic induction, the first coil 32 drives the measuring column 34 to move away from the first coil 32 along the first direction X, thus causing the measuring column 34 to move closer to the second coil 33. During this movement, the second coil 33 generates an induced current. When the measuring column 34 is in the second position, the induced current of the second coil 33 is 0. At this time, the first circuit board 20 receives the information that the induced current of the second coil 33 is 0 and de-energizes the first coil 32.

[0055] Similarly, the first circuit board 20 supplies a first current to the second coil 33, de-energizing the first coil 32. Through electromagnetic induction, the second coil 33 drives the measuring column 34 to move away from the second coil 33 along the first direction X, thus causing the measuring column 34 to move closer to the first coil 32. During this movement, the first coil 32 generates an induced current. When the measuring column 34 is at the first position, the induced current of the first coil 32 is 0. At this time, the first circuit board 20 receives the information that the induced current of the first coil 32 is 0, and then de-energizes the second coil 33.

[0056] The first circuit board 20 records the duration of the first coil 32 being energized and the duration of the second coil 33 being energized, thus obtaining the total time for the measuring column 34 to travel back and forth between the first position and the second position once.

[0057] Typically, the oil viscosity measuring device 1 will be tested in a variety of oils with known viscosity to obtain the total time for multiple measuring columns 34 to travel back and forth between the first and second positions once. This generates a standard oil viscosity curve, where the horizontal axis of the curve can be the total time for the measuring columns 34 to travel back and forth between the first and second positions once, and the vertical axis can be the viscosity value of the oil.

[0058] When measuring the viscosity of an oil, the total time taken for the measuring column 34 to travel back and forth between the first and second positions is obtained and compared with a standard oil viscosity curve to determine the viscosity of the oil to be tested.

[0059] The technical solution of this application embodiment provides a first opening 311 at the other end of the probe housing 31, and the flow channel 351 of the coil frame 35 is connected to the first opening 311, allowing oil to enter the flow channel 351. Simultaneously, the measuring column 34 is movably positioned within the flow channel 351 along the first direction X. The first coil 32 drives the measuring column 34 from a first position to a second position, and the second coil 33 drives the measuring column 34 from the second position to the first position. The first circuit board 20 records the round-trip time of the measuring column 34 between the first and second positions. The first circuit board 20 can determine the viscosity of the oil based on a pre-generated standard oil viscosity curve (which represents the viscosity value of the oil corresponding to each round-trip time of the measuring column 34), thus achieving oil viscosity measurement, reducing the influence of environmental factors on the measurement results, and improving measurement accuracy.

[0060] Please refer to Figures 1 to 4 and refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of a measuring column provided in some embodiments of this application. In some embodiments, the measuring column 34 is provided with a first through hole 341, which penetrates through both end faces of the measuring column 34 along a first direction X.

[0061] The measuring column 34 is movably disposed within the flow channel 351 along the first direction X. A gap is provided between the measuring column 34 and the inner wall of the flow channel 351 to allow the measuring column 34 to move within the flow channel 351. Simultaneously, to reduce the risk of deviation when the measuring column 34 moves along the first direction X within the flow channel 351, the gap between the measuring column 34 and the inner wall of the flow channel 351 is relatively small. When oil enters the flow channel 351, the small gap between the measuring column 34 and the flow channel 351 results in a slower speed at which the oil passes through the gap and enters the other end of the flow channel 351.

[0062] Therefore, in some embodiments, the measuring column 34 is provided with a first through hole 341, and the first through hole 341 penetrates through both end faces of the measuring column 34, so that the oil can pass through the measuring column 34 through the first through hole 341, thereby increasing the speed at which the oil fills the flow channel 351, which is beneficial to increasing the speed of measuring the viscosity of the oil.

[0063] Meanwhile, as the measuring column 34 moves within the flow channel 351, the oil can flow within the first through hole 341, which reduces the resistance of the oil to the movement of the measuring column 34, thus improving the stability of the movement of the measuring column 34 and reducing the difficulty of the movement of the measuring column 34. This also reduces the current required by the first coil 32 or the second coil 33, thus saving energy.

[0064] In some embodiments, the first through hole 341 may be integrally formed with the measuring column 34, or the first through hole 341 may be formed by machining after the measuring column 34 is formed.

[0065] In this embodiment of the technical solution, the measuring column 34 is disposed within the flow channel 351. To reduce the risk of deviation when the measuring column 34 moves along the first direction X, the gap between the measuring column 34 and the inner wall of the flow channel 351 is small. By providing a first through hole 341 in the measuring column 34, oil can pass through the first through hole 341, allowing oil to enter the other end of the flow channel 351 from one end through the first through hole 341, which helps to increase the speed at which the oil fills the flow channel 351. Simultaneously, during the movement of the measuring column 34 within the flow channel 351, the oil can flow within the first through hole 341, reducing the resistance of the oil to the movement of the measuring column 34, thus improving the smoothness of the measuring column 34's movement. Furthermore, increasing the contact area between the oil and the measuring column 34 helps to improve the accuracy of measuring the oil viscosity.

[0066] Please refer to Figures 1 to 5 In some embodiments, in the first direction X, the outer peripheral surfaces of both ends of the measuring column 34 are conical surfaces 342.

[0067] In some embodiments, the conical surface 342 of the measuring column 34 can be integrally formed with the measuring column 34, or the conical surface 342 can be machined after the measuring column 34 is formed.

[0068] In some embodiments, in the first direction X, one end of the measuring column 34 has a conical surface 342 that extends to the end face of that end of the measuring column 34 in the direction that the end face of that end points to the end face of the other end, and the outer diameter of the portion of the measuring column 34 corresponding to the conical surface 342 gradually increases.

[0069] During the movement of the measuring column 34 within the flow channel 351, the conical surface 342 can serve as a guide surface for the oil, thereby reducing the resistance of the oil to the movement of the measuring column 34. This improves the stability of the movement of the measuring column 34 and reduces the difficulty of its movement, resulting in a smaller current required for the first coil 32 or the second coil 33, which helps to save energy.

[0070] The technical solution of this application embodiment sets the outer peripheral surfaces of both ends of the measuring column 34 as conical surfaces 342. During the movement of the measuring column 34 in the flow channel 351, the oil can flow along the conical surfaces 342, reducing the resistance of the oil to prevent the measuring column 34 from moving, which is beneficial to improving the stability of the movement of the measuring column 34. At the same time, it increases the contact area between the oil and the measuring column 34, which is beneficial to improving the accuracy of measuring the viscosity of the oil.

[0071] Please refer to Figures 2 to 4 In some embodiments, the probe 30 further includes a probe top cover 36 and a probe bottom cover 37, which are respectively connected to the two ends of the coil frame 35 in the first direction X. The probe bottom cover 37 has a second through hole 371, which connects the first opening 311 and the flow channel 351. In the first position, the measuring post 34 abuts against the probe bottom cover 37. In the second position, the measuring post 34 abuts against the probe top cover 36.

[0072] In some embodiments, the probe top cover 36 may be made of plastic, metal, or the like.

[0073] In some embodiments, the probe bottom cover 37 may be made of plastic, metal, or the like.

[0074] In some embodiments, the materials of the probe top cover 36 and the probe bottom cover 37 may be the same as the materials of the probe housing 31.

[0075] In some embodiments, the flow channels 351 of the coil frame 35 may have openings at both ends in the first direction X to facilitate processing.

[0076] In some embodiments, the probe top cover 36 is disposed at one end of the coil frame 35 in the first direction X to close the opening of the flow channel 351 at that end in the first direction X, thereby reducing the risk of oil leakage within the flow channel 351. The probe top cover 36 can be connected to the probe housing 31 by means of welding, gluing, bolting, etc. Simultaneously, the probe top cover 36 can be connected to the coil frame 35 by means of welding, gluing, bolting, etc.

[0077] In some embodiments, the probe bottom cover 37 is disposed at the other end of the coil frame 35 in the first direction X, and the probe bottom cover 37 closes the first opening 311 of the probe housing 31. The probe bottom cover 37 can be connected to the probe housing 31 by means of welding, gluing, bolting, etc. Simultaneously, the probe bottom cover 37 can be connected to the coil frame 35 by means of welding, gluing, bolting, etc.

[0078] In some embodiments, the probe bottom cover 37 is provided with a second through hole 371, which connects the first opening 311 and the flow channel 351, so that oil can enter the flow channel 351 from the first opening 311 through the second through hole 371.

[0079] In some embodiments, both the probe bottom cover 37 and the probe top cover 36 may be provided with receiving grooves, the shape of which matches the shape of the two ends of the measuring column 34. For example, the end faces of the two ends of the measuring column 34 may be conical surfaces 342, and the inner wall surface of the receiving groove may be a conical surface 342 that matches the conical surface 342.

[0080] In some embodiments, in the first position, the measuring column 34 abuts against the probe bottom cover 37 to reduce the risk that the induced current of the first coil 32 may change due to the continued movement of the measuring column 34 due to inertia, thereby affecting the measurement accuracy. It also reduces the risk that the measuring column 34 may move outside the flow channel 351.

[0081] In the second position, the measuring column 34 abuts against the probe top cover 36 to reduce the risk that the induced current of the second coil 33 will change due to the continued movement of the measuring column 34 due to inertia, thereby affecting the measurement accuracy. At the same time, it also reduces the risk that the measuring column 34 will move outside the flow channel 351.

[0082] The technical solution of this application embodiment connects the first opening 311 and the flow channel 351 through a second through hole 371, allowing oil to enter the flow channel 351. Simultaneously, the probe bottom cover 37 abuts against the measuring column 34 in the first position, and the probe top cover 36 abuts against the measuring column 34 in the second position, reducing the risk of the measuring column 34 moving out of the flow channel 351 and improving the reliability of the oil viscosity measuring device 1.

[0083] Please refer to Figures 2 to 4In some embodiments, the probe 30 further includes a spring coil 38, which is sleeved on the outer peripheral surface of the probe bottom cover 37 and located between the probe bottom cover 37 and the probe housing 31.

[0084] In some embodiments, during installation, the probe top cover 36 and probe bottom cover 37 can be connected to the coil frame 35 respectively, and then the spring coil 38 can be fitted onto the outer circumferential surface of the probe bottom cover 37. The entire connecting component is placed on the probe housing 31, so that the spring coil 38 is compressed to achieve an interference fit between the probe bottom cover 37 and the probe housing 31.

[0085] In some embodiments, the spring coil 38 may be made of plastic or elastic metal.

[0086] The technical solution of this application embodiment provides a spring ring 38 between the probe bottom cover 37 and the probe housing 31, that is, the spring ring 38 achieves an interference fit between the probe bottom cover 37 and the probe housing 31, thereby improving the reliability of the probe bottom cover 37 installation, and thus improving the reliability of the probe top cover 36 and the measuring column 34 installation.

[0087] Please refer to Figures 2 to 4 In some embodiments, the probe 30 further includes a first coil outer ring 321, a second coil outer ring 331, a first gasket 322, and a second gasket 332. The first coil outer ring 321 separates the first coil 32 from the probe housing 31, and the second coil outer ring 331 separates the second coil 33 from the probe housing 31. In the first direction X, the first gasket 322 is disposed between the first coil 32 and the first coil outer ring 321, and the second gasket 332 is disposed between the second coil 33 and the second coil outer ring 331.

[0088] In some embodiments, the first coil outer ring 321 may be sleeved on one end of the body 352 of the coil frame 35 in the first direction X, and together with the body 352, form a receiving cavity, in which the first coil 32 is disposed. The first coil outer ring 321 may be connected to the outer periphery of the protrusion 353.

[0089] In some embodiments, the second coil outer ring 331 may be sleeved on the other end of the body 352 of the coil frame 35 in the first direction X, and together with the body 352, form a receiving cavity, in which the second coil 33 is disposed. The second coil outer ring 331 may be connected to the outer periphery of the protrusion 353.

[0090] It should be noted that the material of the first coil outer ring 321 and the second coil outer ring 331 can both be metal, such as iron. The first coil outer ring 321 and the second coil outer ring 331 are arranged alternately to reduce the risk that when one of the first coil 32 or the second coil 33 is energized, the other will also be energized.

[0091] In some embodiments, the material of the first gasket 322 and the material of the second gasket 332 can be the same. The materials of the first gasket 322 and the second gasket 332 can be plastic, sponge, etc.

[0092] In some embodiments, the thickness of the first gasket 322, the thickness of the second gasket 332, and the first direction X can be parallel, and the thickness of the first gasket 322 and the thickness of the second gasket 332 can be the same. That is, there is no need to deliberately distinguish between the first gasket 322 and the second gasket 332 during installation, which helps to improve the ease of assembly of the oil viscosity measuring device 1.

[0093] In some embodiments, one end of the first coil 32 in the first direction X can abut against the protrusion 353, the other end of the first coil 32 in the first direction X can contact the first pad 322, and the outer ring 321 of the first coil can abut against the probe bottom cover 37.

[0094] In some embodiments, one end of the second coil 33 in the first direction X may abut against the protrusion 353, the other end of the second coil 33 in the first direction X may contact the second pad 332, and the outer ring 331 of the second coil may abut against the probe top cover 36.

[0095] The technical solution of this application embodiment improves the reliability of the installation of the first coil 32 and the second coil 33 by providing a first coil outer ring 321 to accommodate the first coil 32 and a second coil outer ring 331 to accommodate the second coil 33. Simultaneously, providing a first gasket 322 between the first coil 32 and the first coil outer ring 321, and a second gasket 332 between the second coil 33 and the second coil outer ring 331, reduces the risk of damage to the first coil 32 and the second coil 33 during installation, thereby improving the reliability of the oil viscosity measuring device 1.

[0096] Please refer to Figures 2 to 4 In some embodiments, the probe 30 further includes a second circuit board 39 and a third pad 391. The second circuit board 39 is disposed inside the probe housing 31, and the first coil 32 and the second coil 33 are electrically connected to the second circuit board 39, respectively. The second circuit board 39 is electrically connected to the first circuit board 20. There are two third pads 391, which are respectively disposed on both sides of the second circuit board 39 in the first direction X.

[0097] In some embodiments, the third gasket 391 may be made of plastic, sponge, or the like to improve the insulation of the second circuit board 39 from other components.

[0098] In some embodiments, the first coil 32 and the second coil 33 can be connected to the second circuit board 39 via wire harnesses, and the second circuit board 39 can be connected to the first circuit board 20 via wire harnesses, thereby reducing the length of a single wire harness.

[0099] In some embodiments, a third pad 391 is located between the second circuit board 39 and the probe housing 31, and another third pad 391 is located between the second circuit board 39 and the probe top cover 36.

[0100] The technical solution of this application embodiment connects the first coil 32 and the second coil 33 electrically via the second circuit board 39, and connects the second circuit board 39 to the first circuit board 20. Compared with the first coil 32 and the second coil 33 being directly connected to the first circuit board 20, this shortens the length of a single wire harness, reduces the risk of the wire harness being damaged, improves the reliability of the connection between the first coil 32 and the second coil 33 and the first circuit board 20, and also helps to reduce the difficulty of maintenance.

[0101] Please refer to Figures 2 to 4 In some embodiments, the probe 30 further includes a sealing ring 40, which is fitted onto the outer peripheral surface of the probe housing 31.

[0102] In some embodiments, the oil viscosity measuring device 1 is inserted into the mounting hole, so that the probe 30 extends into the oil pipeline through the mounting hole, and the sealing ring 40 is located between the probe housing 31 and the inner wall surface of the mounting hole, reducing the risk of oil leakage in the oil pipeline through the mounting hole.

[0103] The technical solution of this application embodiment reduces the risk of oil leakage by fitting a sealing ring 40 onto the outer peripheral surface of the probe housing 31.

[0104] Please refer to Figures 2 to 4 and refer to Figure 6 and Figure 8 , Figure 6 This is a flowchart of an oil viscosity measurement method provided in some embodiments of this application. Figure 8 This is a schematic diagram of a pre-generated standard oil viscosity curve provided in some embodiments of this application. Embodiments of this application provide an oil viscosity measurement method, applied to an oil viscosity measuring device 1 as described in any of the above embodiments. The oil viscosity measurement method includes: S100: Move the measuring column 34 to the first position.

[0105] In order to reduce the impact of the starting position of the measuring column 34 on the accuracy of recording the total reciprocating motion time of the measuring column 34, the measuring column 34 is moved to the first position and the starting position of the measuring column 34 is calibrated.

[0106] S200: The first current is applied to the first coil 32 through the first circuit board 20, driving the measuring column 34 to move from the first position to the second position.

[0107] A first current is applied to the first coil 32 via the first circuit board 20, and timing begins. As the measuring column 34 moves from the first position to the second position, an induced current is generated in the second coil 33. When the measuring column 34 reaches the second position, the induced current in the second coil 33 is zero, and the first circuit board 20 de-energizes the first coil 32. At this point, the measuring column 34 stops moving, i.e., it has reached the second position. Timing ends at this point, and the first circuit board 20 records the time t1.

[0108] S300: The first current is applied to the second coil 33 through the first circuit board 20, driving the measuring column 34 to move from the second position to the first position.

[0109] A first current is applied to the second coil 33 via the first circuit board 20, and timing begins. As the measuring column 34 moves from the second position to the first position, an induced current is generated in the first coil 32. When the measuring column 34 reaches the first position, the induced current in the first coil 32 is zero, and the first circuit board 20 de-energizes the second coil 33. At this point, the measuring column 34 stops moving, i.e., it has reached the first position. Timing ends at this point, and the first circuit board 20 records the time t2.

[0110] S400: Record the total reciprocating motion time of the measuring column 34 via the first circuit board 20.

[0111] The total time of the reciprocating motion of the measuring column 34 is t, where t = t1 + t2.

[0112] S500: The total reciprocating motion time is compared with the pre-generated standard oil viscosity curve to generate the target viscosity of the oil to be measured.

[0113] The oil viscosity measuring device 1 conducts experiments on various oils of known viscosity to obtain the total time t of the multiple measuring columns 34 traveling back and forth between the first and second positions once. This generates a standard oil viscosity curve, where the horizontal axis represents the total time t of the measuring columns 34 traveling back and forth between the first and second positions, and the vertical axis represents the oil viscosity value. When measuring oil viscosity, the total time t of the measuring columns 34 traveling back and forth between the first and second positions is obtained and compared with the standard oil viscosity curve to determine the viscosity of the oil to be tested.

[0114] It is understandable that the oil viscosity measurement method can also be as follows: move the measuring column 34 to the second position; pass a first current through the second coil 33 via the first circuit board 20 to drive the measuring column 34 from the second position to the first position; pass a first current through the first coil 32 via the first circuit board 20 to drive the measuring column 34 from the first position to the second position; record the total reciprocating motion time of the measuring column 34 via the first circuit board 20; perform fuzzy identification between the total reciprocating motion time and the pre-generated standard oil viscosity curve to generate the target viscosity of the oil to be measured.

[0115] In some embodiments, the measuring column 34 can be driven to perform multiple reciprocating motions to obtain the total time of the multiple reciprocating motions. The average value of the total time of the multiple reciprocating motions is then calculated, and the average value is compared with a pre-generated standard oil viscosity curve for fuzzy identification to generate the target viscosity of the oil to be measured.

[0116] The technical solution of this application embodiment improves the accuracy of oil viscosity measurement by calibrating the position of the measuring column 34 before it measures the oil viscosity by moving the measuring column 34 to a first position. The measuring column 34 is driven from the first position to the second position by the first coil 32, and from the second position to the first position by the second coil 33. The first circuit board 20 records the round-trip time of the measuring column 34 between the first and second positions. The first circuit board 20 can derive the oil viscosity based on a pre-generated standard oil viscosity curve, thus achieving oil viscosity measurement, reducing the influence of environmental factors on the measurement results, and improving measurement accuracy.

[0117] Please refer to Figures 2 to 4 and refer to Figure 7 , Figure 7 A flowchart illustrating the movement of a measuring column to a first position is provided for some embodiments of this application. In some embodiments, S100: moving the measuring column 34 to the first position includes: S110: The first coil 32 is supplied with a second current through the first circuit board 20, driving the measuring column 34 to move to the first position. The current direction of the first current is opposite to that of the second current.

[0118] The direction of the first current is opposite to the direction of the second current. That is, when the first circuit board 20 applies the first current to the first coil 32, the first coil 32 drives the measuring column 34 to move away from the first coil 32. When the first circuit board 20 applies the second current to the first coil 32, the first coil 32 drives the measuring column 34 to move closer to the first coil 32.

[0119] Another method to move the measuring column 34 to the first position is to pass a first current through the second coil 33 via the first circuit board 20 to drive the measuring column 34 to move to the first position.

[0120] The technical solution of this application embodiment drives the measuring column 34 to move to the first position through the first coil 32. Before the measuring column 34 measures the oil viscosity, the position of the measuring column 34 is calibrated, which helps to improve the accuracy of measuring the oil viscosity.

[0121] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An oil viscosity measuring device, characterized by, The probe comprises a probe shell, a first coil, a second coil, a measuring column and a coil skeleton, one end of the probe shell is connected with the shell in a first direction, the other end of the probe shell is provided with a first opening for oil entering, the first direction is parallel to the axial direction of the probe shell; The coil skeleton is arranged in the probe shell, an inner part of the coil skeleton is formed with a flow channel, the flow channel is communicated with the first opening, the first coil and the second coil are respectively sleeved on two ends of the coil skeleton in the first direction, and the first coil and the second coil are respectively electrically connected with the first circuit board; The measuring column is movably arranged in the flow channel and moves back and forth along the first direction, when the induced current of the first coil is 0, the measuring column is located at a first position, when the induced current of the second coil is 0, the measuring column is located at a second position; When moving from the first position to the second position, the first circuit board inputs current to the first coil to drive the measuring column to move, the second coil is not electrified and generates induced current; When moving from the second position to the first position, the first circuit board inputs current to the second coil to drive the measuring column to move, the first coil is not electrified and generates induced current. The measuring column is provided with a first through hole penetrating through two end faces of the measuring column along the first direction.

2. The oil viscosity measuring device according to claim 1, characterized by In the first direction, the outer peripheral surface of the two ends of the measuring column is a conical surface.

3. The oil viscosity measuring device according to claim 1, wherein The probe further comprises a probe top cover and a probe bottom cover, the probe top cover and the probe bottom cover are respectively connected to two ends of the coil skeleton in the first direction, the probe bottom cover has a second through hole, the second through hole communicates the first opening and the flow channel; 4. The oil viscosity measuring device according to claim 1, wherein In the first position, the measuring column abuts against the probe bottom cover; In the second position, the measuring column abuts against the probe top cover. The probe further comprises a spring ring, the spring ring is sleeved on the outer peripheral surface of the probe bottom cover and located between the probe bottom cover and the probe shell.

5. The oil viscosity measuring device according to claim 4, wherein The probe further comprises a first coil outer sleeve ring, a second coil outer sleeve ring, a first gasket and a second gasket; 6. The oil viscosity measuring device according to claim 1, wherein The first coil outer sleeve ring separates the first coil and the probe shell, the second coil outer sleeve ring separates the second coil and the probe shell; In the first direction, the first gasket is arranged between the first coil and the first coil outer sleeve ring, and the second gasket is arranged between the second coil and the second coil outer sleeve ring. The probe further comprises a second circuit board and a third gasket; 7. The oil viscosity measuring device according to claim 1, wherein The second circuit board is arranged in the probe shell, the first coil and the second coil are respectively electrically connected with the second circuit board, and the second circuit board is electrically connected with the first circuit board; The number of the third gaskets is two, and the two third gaskets are respectively arranged on two sides of the second circuit board in the first direction. The probe further comprises a sealing ring, the sealing ring is sleeved on the outer peripheral surface of the probe shell.

8. The oil viscosity measuring device according to claim 1, wherein ​ 9. An oil viscosity measurement method, characterized by, The oil viscosity measuring method is applied to the oil viscosity measuring device as claimed in any one of claims 1-8, and comprises the steps of: moving the measuring column to the first position; driving the measuring column to move from the first position to the second position by passing a first current through the first coil via the first circuit board; driving the measuring column to move from the second position to the first position by passing a first current through the second coil via the first circuit board; recording the total time of the reciprocating movement of the measuring column via the first circuit board; performing fuzzy identification between the total time of the reciprocating movement and a standard oil viscosity curve generated in advance to generate a target viscosity of the oil to be measured.

10. The oil viscosity measurement method of claim 9, wherein, The step of moving the measuring column to the first position comprises: driving the measuring column to move to the first position by passing a second current through the first coil via the first circuit board, the current direction of the first current being opposite to the current direction of the second current.

Images