Hall encoder angle calibration device

Abstract

The utility model provides a Hall encoder angle calibration device which comprises a rotating wheel limiting mechanism and a calibration assembly, the rotating wheel limiting mechanism comprises a shell, an axial limiting piece and a wheel disc, the wheel disc is located in the shell, and the upper end and the lower end of the wheel disc are rotationally connected with the shell through first bearings; limiting columns are arranged on the upper disc face of the wheel disc. The axial limiting piece comprises a mounting plate and a baffle, the mounting plate is connected with the shell, the baffle is arranged on the bottom face of the mounting plate, located in the containing space and located above the wheel disc, and the baffle can abut against a limiting column arranged on the wheel disc in the rotating process, so that the maximum rotating range of the wheel disc is limited; the calibration assembly comprises a fixing frame, a magnetic induction circuit board and a magnetic coding switching rod, one end of the magnetic coding switching rod is connected with the wheel disc, and the other end of the magnetic coding switching rod penetrates through the fixing frame to be located in the induction area and is electrically connected with the magnetic induction circuit board.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a Hall encoder angle calibration device. Background Technology

[0002] A Hall effect encoder is a non-contact angle sensor based on the Hall effect, measuring rotation angle by detecting changes in the magnetic field. Due to its simple structure, resistance to contamination, and long lifespan, Hall encoders are widely used in motor control, robot joints, and automotive steering systems. However, the output accuracy of Hall encoders is susceptible to fluctuations, resulting in angular errors. Therefore, calibration is necessary to ensure that the output angle matches the actual mechanical angle during application.

[0003] Therefore, how to provide an angle calibration device for calibrating Hall effect rotary encoders to ensure that the encoder output angle is consistent with the actual physical position is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a Hall encoder angle calibration device, so as to solve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a Hall encoder angle calibration device, which includes: a wheel limiting mechanism, the wheel limiting mechanism including a housing, an axial limiting member, and a wheel, the housing having an accommodating space inside, the wheel being located within the accommodating space, the upper and lower ends of the wheel being rotatably connected to the housing via a first bearing; a limiting post being provided on the upper surface of the wheel; the axial limiting member including a mounting plate and a baffle, the mounting plate being connected to the housing, the baffle being disposed on the bottom surface of the mounting plate and located within the accommodating space; the wheel limiting mechanism includes: a wheel limiting mechanism including a housing, an axial limiting member, and a wheel being located within the accommodating space; the wheel limiting mechanism includes: a wheel limiting mechanism including ... The mounting plate and the baffle are both located above the wheel; the calibration assembly includes a fixing frame, a magnetic induction circuit board, and a magnetic encoding adapter rod. The fixing frame is mounted on the top surface of the housing; the magnetic induction circuit board is connected to the top surface of the fixing frame through several support rods, and the magnetic induction circuit board and the top surface of the fixing frame together form a sensing area; one end of the magnetic encoding adapter rod is connected to the wheel, and a connecting channel is provided through the middle of the fixing frame. The other end of the magnetic encoding adapter rod passes through the connecting channel and is located within the sensing area, and is electrically connected to the magnetic induction circuit board.

[0006] Optionally, the top surface of the housing is provided with a groove, and the mounting plate is detachably installed in the groove; the bottom of the groove is provided with a through hole, and the baffle is located in the accommodating space through the through hole.

[0007] Optionally, the limiting post is arranged perpendicularly to the upper surface of the wheel, and the baffle is arranged perpendicularly to the mounting plate.

[0008] Optionally, the baffle is positioned close to the upper surface of the wheel so that the limiting post contacts and abuts against the baffle when the wheel rotates.

[0009] Optionally, a rotating groove is provided on the side of the housing, the rotating groove is connected to the accommodating space, and the side of the wheel passes through the rotating groove and is located outside the housing.

[0010] Optionally, an observation window is provided on the side of the housing, and the opening surface of the observation window is the side of the housing closest to the baffle.

[0011] Optionally, the middle part of the magnetic encoder adapter rod is rotatably connected to the housing via a second bearing.

[0012] Optionally, a magnet fixing sleeve is fitted onto the other end of the magnetic coding adapter rod.

[0013] Optionally, the support column is a hexagonal copper column.

[0014] Beneficial effects:

[0015] This utility model provides a Hall encoder angle calibration device, which includes: a wheel limiting mechanism, comprising a housing, an axial limiting component, and a wheel; the housing has an internal accommodating space, and the wheel is located within the accommodating space; the upper and lower ends of the wheel are rotatably connected to the housing via first bearings; a limiting post is provided on the upper surface of the wheel, which can abut against the baffle in the axial limiting component to limit the rotation of the wheel; the axial limiting component includes a mounting plate and a baffle; the mounting plate is connected to the housing, and the baffle is located on the bottom surface of the mounting plate and within the accommodating space; both the mounting plate and the baffle are located above the wheel, and the baffle abuts against the limiting post on the wheel during rotation, thereby limiting the maximum rotation range of the wheel; the calibration component includes a fixing frame, a magnetic induction circuit board, and a magnetic encoding adapter rod; one end of the magnetic encoding adapter rod is connected to the wheel, and the rotation of the wheel can drive the magnetic encoding adapter rod to rotate. The magnetic encoder adapter rod, with its other end passing through the fixed frame and located within the sensing area, is electrically connected to the magnetic induction circuit board. During angle calibration testing, the wheel is manually rotated until it is blocked by the limit post on the wheel and the baffle on the axial limit component. At this point, the actual angle of the wheel is strictly limited by the mechanical structure. Simultaneously, as the magnetic encoder adapter rod rotates with the wheel, the Hall encoder is calibrated synchronously based on the angle of rotation limited by the axial limit component. The magnetic induction circuit board receives electromagnetic induction, reads the current output value (such as voltage or digital quantity), and binds it to a known limit angle (such as 90°) to complete the rotation angle calibration. This constructs a device for quickly calibrating the angle of a Hall encoder, ensuring that the encoder output angle matches the actual physical position. It enables rapid on-site calibration of Hall encoders without the need for complex instruments, making it suitable for batch calibration or maintenance scenarios and improving the efficiency and speed of angle calibration.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a Hall encoder angle calibration device provided in an embodiment of this application;

[0019] Figure 2 This application provides a structural disassembly diagram of a Hall encoder angle calibration device according to an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of the internal structure of a Hall encoder angle calibration device provided in an embodiment of this application;

[0021] Figure label:

[0022] 1—Rotary limit mechanism;

[0023] 11—Shell;

[0024] 111—Rotating groove;

[0025] 112—Groove;

[0026] 113—Through hole;

[0027] 114—Observation window;

[0028] 12—Axial limiting component;

[0029] 121—Mounting plate;

[0030] 122—Baffle;

[0031] 13—Roulette;

[0032] 131—Limit pin;

[0033] 14—First bearing;

[0034] 2—Calibration components;

[0035] 21—Fixed bracket;

[0036] 22—Magnetic induction circuit board;

[0037] 23—Magnetic coded adapter rod;

[0038] 24—Supporting column;

[0039] 25—Second bearing;

[0040] 26—Magnetic retaining sleeve; Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Furthermore, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0043] Please see Figure 1-3 This embodiment provides a Hall encoder angle calibration device, which includes: a wheel limiting mechanism 1, the wheel limiting mechanism 1 including a housing 11, an axial limiting member 12, and a wheel 13. The housing 11 has an accommodating space inside, and the wheel 13 is located in the accommodating space. The upper and lower ends of the wheel 13 are rotatably connected to the housing 11 through a first bearing 14. A limiting post 131 is provided on the upper surface of the wheel 13. The axial limiting member 12 includes a mounting plate 121 and a baffle 122. The mounting plate 121 is connected to the housing 11, and the baffle 122 is disposed on the bottom surface of the mounting plate 121 and located in the accommodating space. Both 21 and baffle 122 are located above the wheel 13; calibration component 2, which includes a fixing frame 21, a magnetic induction circuit board 22 and a magnetic encoding adapter rod 23, the fixing frame 21 is installed on the top surface of the housing 11; the magnetic induction circuit board 22 is connected to the top surface of the fixing frame 21 through several support columns 24, and the magnetic induction circuit board 22 and the top surface of the fixing frame 21 together form an induction area; one end of the magnetic encoding adapter rod 23 is connected to the wheel 13, a connecting channel is opened through the middle of the fixing frame 21, and the other end of the magnetic encoding adapter rod 23 passes through the connecting channel and is located in the induction area, and is electrically connected to the magnetic induction circuit board 22.

[0044] Specifically, this utility model provides a Hall encoder angle calibration device, which includes: a rotary wheel limiting mechanism 1, comprising a housing 11, an axial limiting member 12, and a wheel 13. The housing 11 has an internal accommodating space, and the wheel 13 is located within this space. The upper and lower ends of the wheel 13 are rotatably connected to the housing 11 via a first bearing 14. The wheel 13 can be configured to have a scale or pointer indicating the angle. A limiting post 131 is provided on the upper surface of the wheel 13, which abuts against the baffle 122 in the axial limiting member 12 to limit the rotation of the wheel 13. Component 12 includes a mounting plate 121 and a baffle 122. The mounting plate 121 is connected to the housing 11, and the baffle 122 is disposed on the bottom surface of the mounting plate 121 and located within the accommodating space. Both the mounting plate 121 and the baffle 122 are located above the wheel 13. By setting the baffle 122, it can abut against the limiting post 131 set on the wheel 13 during rotation, thereby limiting the maximum rotation range of the wheel. The calibration component 2 includes a fixing frame 21, a magnetic induction circuit board 22, and a magnetic encoding adapter rod 23. One end of the magnetic encoding adapter rod 23 is connected to the wheel 13. When the wheel 13 rotates, it can drive the magnetic encoding adapter rod 23 to rotate. The other end of the magnetic encoder adapter 23 passes through the fixing frame 21 and is located within the sensing area, electrically connected to the magnetic induction circuit board 22. During angle calibration testing, the wheel 13 is manually rotated until the limiting post 131 on the wheel 13 is blocked by the baffle 122 on the axial limiting member 12. At this point, the actual angle of the wheel 13 is strictly limited by the mechanical structure. Simultaneously, as the magnetic encoder adapter 23 rotates with the wheel 13, the Hall encoder is synchronously calibrated based on the angle of rotation limited by the axial limiting member 12. The magnetic induction circuit board 22 receives electromagnetic induction, reads the current output value (such as voltage or digital quantity), and... By binding with a known limiting angle (e.g., 90°), the rotation angle calibration is completed. In this application, only a single baffle 122 is set to achieve unidirectional rotation 90° blocking. If there are other requirements during the test, the baffle 122 can be installed at other positions on the axial limiting component 12 to adapt to encoders with different ranges and support manual adjustment. In this way, a device for quickly calibrating the angle of a Hall encoder is constructed to ensure that the encoder output angle is consistent with the actual physical position. The Hall encoder can be quickly calibrated on-site without the use of complex instruments. It is suitable for batch calibration or maintenance scenarios and improves the efficiency and speed of angle calibration.

[0045] In some possible implementations, a rotating groove 111 is provided on the side of the housing 11, the rotating groove 111 is connected to the accommodating space, and the side of the wheel 13 passes through the rotating groove 111 and is located outside the housing 11.

[0046] Specifically, the rotating slot 111 provides an operating area for manually rotating the wheel 13.

[0047] In some possible implementations, the top surface of the housing 11 is provided with a groove 112, and the mounting plate 121 is detachably installed in the groove 112; the bottom of the groove 112 is provided with a through hole 113, and the baffle 122 is located in the accommodating space through the through hole 113.

[0048] Specifically, such as Figure 2 As shown, the mounting plate 121 can be detachably installed in the groove 112 by the groove 112, which facilitates the disassembly and replacement of the axial limiting member 12.

[0049] In some possible implementations, the limiting post 131 is arranged perpendicularly to the upper surface of the wheel 13, and the baffle 122 is arranged perpendicularly to the mounting plate 121; the baffle 122 is arranged close to the upper surface of the wheel 13 so that the limiting post 131 and the baffle 122 come into contact and abut when the wheel 13 rotates.

[0050] Specifically, by setting the baffle 122 and the limiting post 131, the baffle 122 and the limiting post 131 are arranged relatively parallel to each other, so as to achieve the function of angle positioning.

[0051] In some possible implementations, an observation window 114 is also provided on the side of the housing 11, and the opening surface of the observation window 114 is the side of the housing 11 closest to the baffle 122.

[0052] Specifically, the observation window 114 facilitates real-time observation of the internal condition of the housing 11.

[0053] In some possible implementations, the middle part of the magnetic encoder adapter rod 23 is rotatably connected to the housing 11 via a second bearing 25; the other end of the magnetic encoder adapter rod 23 is fitted with a magnet fixing sleeve 26; and the support column 24 is a hexagonal copper column.

[0054] Specifically, the magnet fixing sleeve 26 is fitted onto the end of the magnetic encoder adapter rod 23 to ensure that the magnet at the end of the magnetic encoder adapter rod 23 and the magnetic induction circuit board 22 remain coaxial. At the same time, it can prevent the magnet from falling off due to vibration or centrifugal force during rotation. The support column 24 is made of hexagonal copper. Copper has good conductivity and can form an electromagnetic shielding layer to suppress external noise interference with the Hall signal. At the same time, it is easy to tighten with a wrench or socket tool to ensure the firmness of the connection between the magnetic induction circuit board 22 and the fixing frame 21 and prevent loosening due to vibration.

[0055] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. All should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

[0056] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A Hall encoder angle calibration device, characterized in that, The Hall encoder angle calibration device includes: A rotating wheel limiting mechanism (1) includes a housing (11), an axial limiting member (12), and a wheel (13). The housing (11) has an internal accommodating space, and the wheel (13) is located within the accommodating space. The upper and lower ends of the wheel (13) are rotatably connected to the housing (11) via a first bearing (14). A limiting post (131) is provided on the upper surface of the wheel (13). The axial limiting member (12) includes a mounting plate (121) and a baffle (122). The mounting plate (121) is connected to the housing (11), and the baffle (122) is located on the bottom surface of the mounting plate (121) and within the accommodating space. Both the mounting plate (121) and the baffle (122) are located above the wheel (13). The calibration component (2) includes a fixing frame (21), a magnetic induction circuit board (22), and a magnetic encoding adapter rod (23). The fixing frame (21) is installed on the top surface of the housing (11). The magnetic induction circuit board (22) is connected to the top surface of the fixing frame (21) through several support columns (24). The magnetic induction circuit board (22) and the top surface of the fixing frame (21) together form an induction area. One end of the magnetic encoding adapter rod (23) is connected to the wheel (13). A connecting channel is opened through the middle of the fixing frame (21). The other end of the magnetic encoding adapter rod (23) passes through the connecting channel and is located in the induction area, and is electrically connected to the magnetic induction circuit board (22).

2. The Hall encoder angle calibration device according to claim 1, characterized in that, The side of the housing (11) is provided with a rotating groove (111), which is connected to the accommodating space. The side of the wheel (13) passes through the rotating groove (111) and is located outside the housing (11).

3. The Hall encoder angle calibration device according to claim 2, characterized in that, The top surface of the housing (11) is provided with a groove (112), and the mounting plate (121) is detachably installed in the groove (112); the bottom of the groove (112) is provided with a through hole (113), and the baffle (122) is located in the accommodating space through the through hole (113).

4. The Hall encoder angle calibration device according to claim 3, characterized in that, The limiting post (131) is arranged perpendicularly to the upper surface of the wheel (13), and the baffle (122) is arranged perpendicularly to the mounting plate (121).

5. The Hall encoder angle calibration device according to claim 4, characterized in that, The baffle (122) is arranged close to the upper surface of the wheel (13) so that the limiting post (131) contacts and abuts against the baffle (122) when the wheel (13) rotates.

6. The Hall encoder angle calibration device according to claim 5, characterized in that, The side of the housing (11) is also provided with an observation window (114), and the opening surface of the observation window (114) is the side of the housing (11) near the baffle (122).

7. The Hall encoder angle calibration device according to claim 6, characterized in that, The middle part of the magnetic encoder adapter rod (23) is rotatably connected to the housing (11) via a second bearing (25).

8. The Hall encoder angle calibration device according to claim 7, characterized in that, The other end of the magnetic encoder adapter rod (23) is fitted with a magnet fixing sleeve (26).

9. The Hall encoder angle calibration device according to claim 8, characterized in that, The support column (24) is a hexagonal copper column.

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