An angle detection device

Abstract

The embodiment of the present invention provides an angle detection device, including a fixed part and a rotating part; the length direction of the fixed part is parallel to the rotation axis of the rotating part, and the rotating part can rotate relative to the fixed part along the circumferential direction of the rotating part; along the length direction of the fixed part, X detection elements are arranged at intervals on the surface of the fixed part facing the rotating part, and X is an integer greater than or equal to 1; along the circumferential direction of the rotating part, 2 to the power of X magnetic part groups are arranged at intervals on the rotating part; each magnetic part group includes X magnetic parts; the X magnetic parts in each magnetic part group are arranged at intervals along the length of the rotating part, and each magnetic part corresponds to a different detection element position; the polarity combination of each magnetic part in different magnetic part groups is different. The technical solution provided by the embodiment of the present invention detects the polarity combination of each magnetic part in different magnetic part groups to realize the detection of the preset angle of rotation of the rotating part, and the preset angle can be set by changing the different arrangement methods of the magnetic part groups.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical detection, and in particular to an angle detection device. Background Art

[0002] In the application scenario of detecting a preset specific rotation angle of a rotating body, sensors such as magnetic encoders, photoelectric encoders, and resolvers can be used to achieve the purpose of detection.

[0003] However, the above sensors currently used have limitations in use. For example, the magnetic encoder can generally only be placed at the end of the shaft of the rotating body for measurement, and there are limitations in the choice of installation position, and the scope of application is small. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention is proposed to provide a new angle detection device, which uses another new method to detect a preset specific rotation angle of a rotating body to improve the scope of application.

[0005] In one embodiment of the present invention, an angle detection device is provided, comprising: a fixed member and a rotating member; the length direction of the fixed member is parallel to the rotation axis of the rotating member, and the rotating member can rotate relative to the fixed member along the circumferential direction of the rotating member;

[0006] Wherein, along the length direction of the fixing member, X detection elements are arranged at intervals on the surface of the fixing member facing the rotating member, where X is an integer greater than or equal to 1;

[0007] Along the circumferential direction of the rotating part, 2 to the power of X magnetic component groups are arranged on the rotating part at intervals; each of the magnetic component groups includes X magnetic components; the X magnetic components in each of the magnetic component groups are arranged at intervals along the length of the rotating part, and each of the magnetic components corresponds to a different position of the detection element; the polarity combinations of the magnetic components in different magnetic component groups are different.

[0008] Optionally, along the length direction of the fixing member, the X detection elements are spaced on the same straight line;

[0009] Along the length direction of the rotating member, the X magnetic members in each magnetic member group are arranged on the same straight line at intervals.

[0010] Optionally, a circuit board is provided on the fixing member, and the X detection elements are integrated on the circuit board and connected to the fixing member via the circuit board.

[0011] Optionally, the fixing member is a cylindrical structure, and the X detection elements are arranged on the inner surface of the fixing member;

[0012] The rotating member is a columnar structure, the rotating member is sleeved in the fixing member, and each magnetic member group is arranged on the outer surface of the rotating member.

[0013] Optionally, the detection element protrudes from the inner surface of the fixing member; or

[0014] The end surface of the sensing end of the detection element is flush with the inner surface of the fixing member.

[0015] Optionally, the magnetic member protrudes from the outer surface of the rotating member; or

[0016] The end surface of the magnetic pole of the magnetic member is flush with the outer surface of the rotating member.

[0017] Optionally, the fixing member is a columnar structure, and the X detection elements are arranged on the outer surface of the fixing member;

[0018] The rotating member is a cylindrical structure, the rotating member is sleeved outside the fixed member, and each magnetic member group is arranged on the inner surface of the rotating member.

[0019] Optionally, along the circumferential direction of the rotating member, 2 to the power of X magnetic member groups are evenly distributed on the rotating member.

[0020] Optionally, one of the 2 to the power of X magnetic component groups is a reference group;

[0021] Taking the reference group as the initial position, the rotation angle between two adjacent magnetic member groups gradually increases or decreases along the circumferential direction of the rotating member.

[0022] Optionally, the rotation angle between two adjacent magnetic component groups increases or decreases gradually.

[0023] In addition, optionally, the detection element includes a Hall element.

[0024] In the technical solution provided by the embodiment of the present invention, the fixed part is fixed relative to the rotating part, and the detection element is arranged on the surface of the fixed part facing the rotating part, so as to avoid increasing the length of the fixed part and the rotating part, and thus effectively control the overall length of the angle detection device, reduce the limitation of the installation space, and make the angle detection device applicable to more installation positions. In addition, by detecting the polarity combination of each magnetic part in different magnetic part groups, the detection of the preset angle of rotation of the rotating part can be realized, and the preset angle can be set according to different needs by changing the different arrangement methods of the magnetic part group, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of an angle detection device provided by an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of another angle detection device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment 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 making creative work are within the scope of protection of the present invention.

[0029] It should be noted that in the description of the present invention, the terms "first" and "second" are only used to facilitate the description of different components or names, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Figure 1 A schematic diagram of the structure of an angle detection device provided by an embodiment of the present invention is shown in FIG. Figure 1 shown.

[0032] In one embodiment of the present invention, an angle detection device is provided, comprising: a fixed member 10 and a rotating member 20. The length direction of the fixed member 10 is parallel to the rotation axis of the rotating member 20, and the rotating member 20 can rotate relative to the fixed member 10 along the circumferential direction of the rotating member 20.

[0033] Wherein, along the length direction of the fixing member 10 , X detection elements 11 are arranged at intervals on the surface of the fixing member 10 facing the rotating member 20 , where X is an integer greater than or equal to 1.

[0034] Along the circumferential direction of the rotating member 20, 2 to the power of X magnetic member groups 21 are arranged on the rotating member 20 at intervals; each magnetic member group 21 includes X magnetic members 22; the X magnetic members 22 in each magnetic member group 21 are arranged at intervals along the length of the rotating member 20, and each magnetic member 22 corresponds to a different position of the detection element 11; the polarity combinations of each magnetic member 22 in different magnetic member groups 21 are different.

[0035] For example, the detection element 11 can determine the preset rotation angle of the rotating member 20 by detecting the polarity combination of each magnetic member 22 in each magnetic member group 21. The number of preset angles can be determined according to the number of magnetic member groups 21. For example, if the number of magnetic member groups 21 is 2 to the power of X, then the number of preset angles is 2 to the power of X.

[0036] Taking X as 3 as an example, the number of magnetic component groups 21 is 2 to the power of 3, that is, 2 3 =8, the 8 magnetic component groups 21 are distributed along the circumference of the rotating member 20, that is, the circumference of the rotating member 20 is divided into eight angles. If the 8 magnetic component groups 21 are evenly distributed, then the circumference of the rotating member 20 is divided into eight angles, each angle is 360° / 8=45°. Each magnetic component group 21 includes X magnetic components 22, that is, each magnetic component group 21 includes 3 magnetic components 22, and the 8 magnetic component groups 21 need a total of 24 magnetic components 22.

[0037] The polarity combinations of the three magnetic members 22 in different magnetic member groups 21 are different, so as to distinguish different magnetic member groups 21. For example, the detection element 11 can be set to identify the polarity N of the magnetic member as 1, and the polarity S as 0. The magnetic combinations of the three magnetic members 22 in different magnetic member groups 21 detected by the three detection elements 11 can be 000, 001, 011, 010, 110, 111, 101, 100. Each polarity combination represents an angle position signal, that is, each signal represents an angle position. For example, if 000 is set to 0°, then 001 is 45°, 011 is 90°, and so on, 100 is 315 degrees. The set angle values ​​are all determined by the actual positions of the magnetic members 22 in each magnetic member group 21.

[0038] When the rotating member 20 rotates relative to the fixed member 10, when rotating at different angles, each magnetic member group 21 will be opposite to the detection element 11 respectively. When different magnetic member groups 21 are opposite to the detection element 11, the detection element 11 can detect the angular position represented by the different polarity combinations of each magnetic member 22 in different magnetic member groups 21, that is, the angular position of the rotating member 20 can be detected. For example, when the angular position signal detected by the three detection elements 11 is 000, it means that the rotating member 20 rotates 0° relative to the fixed member 10. When the angular position signal detected by the three detection elements 11 is 001, it means that the rotating member 20 rotates 45° relative to the fixed member 10, and so on.

[0039] It should be noted that the polarity combination of the magnetic parts 22 in each magnetic part group 21 can represent different angular positions according to different needs. For example, the magnetic combination can be 000, 001, 011, 010, 110, 111, 101, 100, or other orders. The sequence can be other orders, but the polarity of the magnetic parts 22 in adjacent rows can only change one. Otherwise, if one of the magnetic parts 22 is detected first, it may cause inaccurate detection data or misjudgment of the same angle, affecting the detection results.

[0040] In the embodiment of the present invention, the X detection elements 11 may be arranged in a straight line, and along the length direction of the fixed member 10, the X detection elements 11 are spaced on the same straight line, that is, along the length direction of the fixed member 10, the surface of the fixed member 10 facing the rotating member 20 is spaced apart and arranged on the same straight line. Correspondingly, along the length direction of the rotating member 20, the X magnetic members 22 in each magnetic member group 21 are spaced apart and arranged on the same straight line, so that the X detection elements 11 correspond to the X magnetic members 22 in the same magnetic member group 21. Alternatively, the X detection elements 11 may not be located on the same straight line, but may be arranged in other forms, such as in a curved line, and accordingly, the X magnetic members 22 in each magnetic member group 21 are also arranged in a curved line, so that the X detection elements 11 correspond to the X magnetic members 22 in the same magnetic member group 21.

[0041] In the technical solution provided by the embodiment of the present invention, the fixed part 10 is fixed relative to the rotating part 20, and the detection element 11 is arranged on the surface of the fixed part 10 facing the rotating part 20, so as to avoid increasing the length of the fixed part 10 and the rotating part 20, and thus the overall length of the angle detection device can be effectively controlled. The limitation of the small installation space enables the angle detection device to be applicable to more installation positions. In addition, by detecting the polarity combination of each magnetic part 22 in different magnetic part groups 21, the detection of the preset angle of rotation of the rotating part 20 can be realized. The preset angle can be set according to different needs by changing the different arrangements of the magnetic part groups 21, and has a wide range of applications.

[0042] Further, see Figure 1 In an achievable embodiment of the present invention, a circuit board 12 is provided on the fixing member 10, and the X detection elements 11 are integrated on the circuit board 12 and connected to the fixing member 10 through the circuit board 12. The circuit board 12 includes but is not limited to a PCB (Printed Circuit Board, printed circuit board 12), and the X detection elements 11 can be integrated into one through the circuit board 12, which is convenient for the installation of the X detection elements 11. The circuit board 12 can also ensure that the X detection elements 11 are located on the same horizontal plane, ensuring the consistency and accuracy of the detection. At the same time, the X detection elements 11 can realize signal transmission through the circuit board 12, reduce signal noise and signal attenuation, and ensure the accuracy of signal transmission.

[0043] Furthermore, in order to process the signal, in the embodiment of the present invention, a processing unit is further provided on the circuit board 12, and the processing unit is respectively connected to the X detection elements 11. The processing unit includes but is not limited to a single chip microcomputer, and the processing unit can receive the detection signals sent by the X detection elements 11 respectively, and then determine the polarity combination of each magnetic member 22 in the current magnetic member group 21 according to the detection, so as to determine the angle represented by the current magnetic member group 21, that is, detect the angle of rotation of the rotating member 20 relative to the fixed member 10.

[0044] In the embodiment of the present invention, the fixed member 10 and the rotating member 20 can be implemented in various ways and can be configured according to different requirements to meet different application scenarios. Figure 1 One possible implementation is that the fixing member 10 is a cylindrical structure ( Figure 1 The fixed part 10 shown in the figure is only a partial one), and X detection elements 11 are arranged on the inner surface of the fixed part 10. The rotating part 20 is a columnar structure, and the rotating part 20 is sleeved in the fixed part 10, and each magnetic component group 21 is arranged on the outer surface of the rotating part 20. The rotating part 20 is sleeved in the fixed part 10, and the fixed part 10 is fixed relative to the rotating part 20. The detection element 11 is arranged on the inner surface of the fixed part 10, that is, on the inner side of the cylindrical structure. The magnetic component group 21 is arranged on the outer surface of the rotating part 20, that is, on the outer side of the columnar structure. Different from the scheme of arranging the detection sensor on the end face of the rotating body, the detection element 11 and the magnetic component 22 do not need to occupy the end face space of the fixed part 10 and the rotating part 20, which can avoid increasing the length of the fixed part 10 and the rotating part 20, and can effectively control the overall length of the angle detection device, reduce the limitation of the installation space, and make the angle detection device suitable for more installation positions.

[0045] Furthermore, there are also multiple ways to set the detection element 11 relative to the fixing member 10. One achievable way is that the detection element 11 protrudes from the inner surface of the fixing member 10. This arrangement can make the detection element 11 closer to the magnetic member 22, making the detection more sensitive and more accurate. Another achievable way is that the end face of the sensing end of the detection element 11 is flush with the inner surface of the fixing member 10. A mounting groove is provided on the inner surface of the fixing member 10, and the detection element 11 is provided in the mounting groove. The detection element 11 does not protrude from the inner surface of the fixing member 10. In this way, the detection element 11 does not increase the installation space and the thickness of the fixing member 10, so that the overall space occupied by the fixing member 10 is smaller, thereby making the angle detection device smaller in size. Of course, according to different needs, the detection element 11 may also be lower than the inner surface of the fixing member 10.

[0046] Furthermore, there are also multiple ways to set the magnetic member 22 relative to the rotating member 20. One achievable way is that the magnetic member 22 protrudes from the outer surface of the rotating member 20, which can make the magnetic member 22 closer to the detection element 11, making the detection more sensitive and more accurate. Another achievable way is that the end face of the magnetic pole of the magnetic member 22 is flush with the outer surface of the rotating member 20. A fixing groove is provided on the outer surface of the rotating member 20, and the magnetic member 22 is provided in the fixing groove. The magnetic member 22 does not protrude from the surface of the rotating member 20, so that the magnetic member 22 does not increase the installation space and the thickness of the rotating member 20, so that the rotating member 20 is thinner and the overall space occupied is smaller, thereby making the angle detection device smaller in size. Of course, according to different needs, the magnetic member 22 can also be lower than the outer surface of the rotating member 20.

[0047] It should be noted that the above-mentioned arrangement of the detection element 11 relative to the fixed member 10 and the arrangement of the magnetic member 22 relative to the rotating member 20 can be realized independently of each other or in combination. For example, when the detection element 11 is arranged to protrude from the inner surface of the fixed member 10, the magnetic member 22 can be arranged to protrude from the outer surface of the rotating member 20, or the magnetic member 22 can be arranged flush with the outer surface of the rotating member 20. When the detection element 11 is arranged flush with the inner surface of the fixed member 10, the magnetic member 22 can be arranged to protrude from the outer surface of the rotating member 20, or the magnetic member 22 can be arranged flush with the outer surface of the rotating member 20. Alternatively, the detection element 11 can partially protrude from the inner surface of the fixed member 10, and the magnetic member 22 can partially protrude from the outer surface of the rotating member 20. The arrangement can be set accordingly according to different detection requirements, which is not specifically limited in the embodiments of the present invention and will not be described in detail one by one.

[0048] Furthermore, in order to realize various installation modes of the rotating member 20, in the embodiment of the present invention, when the fixing member 10 is a cylindrical structure, the rotating member 20 can be a solid structure, that is, a solid column structure, or a hollow structure, that is, the rotating member 20 is a hollow column structure, which can also be called a cylindrical structure. When the rotating member 20 is a cylindrical structure, it can be sleeved on the external device through the inner cavity of the cylindrical structure.

[0049] In the embodiment of the present invention, in addition to the above-mentioned implementation method in which the fixing member 10 is a cylindrical structure and the rotating member 20 is a columnar structure, another implementation method is also included. Figure 2 The fixed part 10 is a columnar structure, and X detection elements 11 are arranged on the outer surface of the fixed part 10. The rotating part 20 is a cylindrical structure, and the rotating part 20 is sleeved outside the fixed part 10, and each magnetic component group 21 is arranged on the inner surface of the rotating part 20. The rotating part 20 is sleeved on the outside of the fixed part 10, and the fixed part 10 is fixed relative to the rotating part 20. The detection element 11 is arranged on the outer surface of the fixed part 10, that is, on the outer side of the columnar structure. The magnetic component group 21 is arranged on the inner surface of the rotating part 20, that is, on the inner side of the cylindrical structure. The detection element 11 and the magnetic component 22 do not need to occupy the end face space of the fixed part 10 and the rotating part 20, which can avoid increasing the length of the fixed part 10 and the rotating part 20, and can effectively control the overall length of the angle detection device, reduce the limitation of the installation space, and make the angle detection device suitable for more installation positions.

[0050] Correspondingly, the arrangement of the detection element 11 relative to the fixed member 10 also includes that the detection element 11 protrudes from the outer surface of the fixed member 10, or the end surface of the sensing end of the detection element 11 is flush with the outer surface of the fixed member 10. Of course, according to different requirements, the detection element 11 can also be lower than the outer surface of the fixed member 10. The arrangement of the magnetic member 22 relative to the rotating member 20 includes that the magnetic member 22 protrudes from the inner surface of the rotating member 20, or the end surface of the magnetic pole of the magnetic member 22 is flush with the inner surface of the rotating member 20. Of course, according to different requirements, the magnetic member 22 can also be lower than the inner surface of the rotating member 20.

[0051] Furthermore, in order to realize various installation modes of the fixing member 10, in the embodiment of the present invention, when the rotating member 20 is a cylindrical structure, the fixing member 10 can be a solid structure, that is, a solid column structure, or a hollow structure, that is, the fixing member 10 is a hollow column structure, which can also be called a cylindrical structure. When the fixing member 10 is a cylindrical structure, it can be sleeved on the external device through the inner cavity of the cylindrical structure.

[0052] In the embodiment of the present invention, when the magnetic component groups 21 are distributed along the circumference of the rotating member 20, they can be evenly distributed, that is, the rotating member 20 is evenly divided into 2x power angles along the circumference. They can also be unevenly distributed, and the rotating member 20 is divided into 2x power angles in an increasing or decreasing manner along the circumference. The set angles are all determined by the actual positions of the magnetic component groups 21.

[0053] One possible implementation is that along the circumferential direction of the rotating member 20, 2 to the power of X magnetic member groups 21 are evenly distributed on the rotating member 20. Taking X as 3 as an example, the number of magnetic member groups 21 is 2 to the power of 3, that is, 2 3 =8, the 8 magnetic component groups 21 are distributed along the circumference of the rotating member 20, that is, the rotating member 20 is divided into eight angles, each angle is 360° / 8=45°. Each magnetic component group 21 includes X magnetic components 22, that is, each magnetic component group 21 includes 3 magnetic components 22, and the 8 magnetic component groups 21 require a total of 24 magnetic component groups 21.

[0054] The polarity combinations of the three magnetic members 22 in each magnetic member group 21 are different, so as to distinguish different magnetic member groups 21, and different magnetic member groups 21 represent different angles. See Table 1 below:

[0055]

[0056] It should be noted that the angle division and polarity arrangement order of the magnetic parts 22 shown in Table 1 are only for illustration and are not to be regarded as improper limitations of the embodiments of the present invention. The polarity arrangement order of the magnetic parts 22 may also be other orders, which will not be described in detail here.

[0057] When the rotating member 20 rotates relative to the fixed member 10, each magnetic member group 21 will be opposite to the detection element 11. When different magnetic member groups 21 are opposite to the detection element 11, the detection element 11 can detect the angular position represented by the different polarity combinations of the magnetic members 22 in different magnetic member groups 21, that is, the angular position of the rotating member 20. For example, if the angular position signal detected by the three detection elements 11 is 000, it means that the rotating member 20 rotates 0° relative to the fixed member 10. When the angular position signal detected by the three detection elements 11 is 001, it means that the rotating member 20 rotates 45° relative to the fixed member 10, and so on.

[0058] Another arrangement of the magnetic component groups 21 is that one of the 2 to the power of X magnetic component groups 21 is a reference group. With the reference group as the initial position, the rotation angle between two adjacent magnetic component groups 21 gradually increases or decreases along the circumferential direction of the rotating member 20.

[0059] Taking X as 3 as an example, the number of magnetic component groups 21 is 2 to the power of 3, that is, 23 =8, 8 magnetic component groups 21 are distributed along the circumference of the rotating member 20, that is, the rotating member 20 is divided into eight angles, and each angle gradually increases or decreases. Taking the magnetic component group 21 with the polarity of the magnetic component 22 of 000 combination as the reference group, and each angle increases as an example, the polarity combination of the three magnetic components 22 in each magnetic component group 21 is different, so as to distinguish different magnetic component groups 21, and different magnetic component groups 21 represent different angles. As shown in Table 2 below:

[0060]

[0061] It should be noted that the angle division and polarity arrangement order of the magnetic parts 22 shown in Table 2 are only for illustration and are not to be regarded as improper limitations of the embodiments of the present invention. The polarity arrangement order of the magnetic parts 22 may also be other orders, which will not be described in detail here.

[0062] When the angular position signal detected by the three detection elements 11 is 000, it means that the rotating member 20 rotates 0° relative to the fixed member 10. When the angular position signal detected by the three detection elements 11 is 001, it means that the rotating member 20 rotates 10° relative to the fixed member 10, and so on.

[0063] The angle between the magnetic component groups 21 can be increased or decreased by any degree according to different requirements, or can be increased or decreased according to a certain rule, such as the rotation angle between two adjacent magnetic component groups 21 increases or decreases gradually. Take increasing as an example, as shown in Table 3 below:

[0064]

[0065] In Table 3, starting from the reference group, the rotation angle between two adjacent magnetic component groups 21 increases by 10°, 20°, 30°, 40°, 50°, 60°, and 70°, respectively, making it easier to detect the angle.

[0066] It should be noted that the angle division and polarity arrangement order of the magnetic parts 22 shown in Table 3 are only for illustration and are not to be regarded as improper limitations of the embodiments of the present invention. The polarity arrangement order of the magnetic parts 22 may also be other orders, which will not be described in detail here.

[0067] In the embodiment of the present invention, the detection element 11 can be realized in a variety of ways. One possible way to realize the detection element 11 is that the detection element 11 includes but is not limited to a Hall element. The detection element 11 is a Hall element. The magnetic member 22 includes but is not limited to a permanent magnet such as a magnet and a magnetic steel. The Hall element has the advantages of a firm structure, a small size, a light weight, easy installation, low power consumption, and vibration resistance. The Hall element cooperates with the magnet for detection, has high sensitivity, and can make the detection of the rotation angle of the rotating member 20 more accurate.

[0068] It should be noted that the angle detection device provided in the embodiment of the present invention can be applied to a torque sensor, and can also be applied to other devices that require angle position detection, such as motors.

[0069] In summary, the technical solution provided by the embodiment of the present invention is that the fixed part is fixed relative to the rotating part, and the detection element is arranged on the surface of the fixed part facing the rotating part, so as to avoid increasing the length of the fixed part and the rotating part, and the overall length of the angle detection device can be effectively controlled. The limitation of the small installation space makes the angle detection device applicable to more installation positions. In addition, by detecting the polarity combination of each magnetic part in different magnetic part groups, the detection of the preset angle of rotation of the rotating part can be realized. The preset angle can be set according to different needs by changing the different arrangements of the magnetic part groups, and has a wide range of applications.

[0070] It should be noted that although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of the present invention. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the scope of protection of the present invention.

[0071] The examples of the embodiments of the present invention are intended to concisely illustrate the technical features of the embodiments of the present invention so that those skilled in the art can intuitively understand the technical features of the embodiments of the present invention, and are not intended to be improper limitations of the embodiments of the present invention.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An angle detection device, characterized in that: include: A fixed member and a rotating member; the length direction of the fixed member is parallel to the rotation axis of the rotating member, and the rotating member can rotate relative to the fixed member along the circumferential direction of the rotating member; Wherein, along the length direction of the fixing member, X detection elements are arranged at intervals on the surface of the fixing member facing the rotating member, where X is an integer greater than or equal to 1; Along the circumferential direction of the rotating member, 2 to the power of X magnetic member groups are arranged on the rotating member at intervals; each of the magnetic member groups includes X magnetic members; the X magnetic members in each of the magnetic member groups are arranged at intervals along the length of the rotating member, and each of the magnetic members corresponds to a different position of the detection element; the polarity combinations of the magnetic members in different magnetic member groups are different; along the length direction of the fixed member, the X detection elements are spaced on the same straight line; Along the length direction of the rotating member, the X magnetic members in each magnetic member group are arranged on the same straight line at intervals; The fixing member is provided with a circuit board, and the circuit board is also provided with a processing unit, and the processing unit is respectively connected to the X detection elements for communication.

2. The angle detection device according to claim 1, characterized in that: The X detection elements are all integrated on the circuit board and connected to the fixing member via the circuit board.

3. The angle detection device according to claim 1, characterized in that: The fixing member is a cylindrical structure, and the X detection elements are arranged on the inner surface of the fixing member; The rotating member is a columnar structure, the rotating member is sleeved in the fixing member, and each magnetic member group is arranged on the outer surface of the rotating member.

4. The angle detection device according to claim 3, characterized in that: The detection element protrudes from the inner surface of the fixing member; or The end surface of the sensing end of the detection element is flush with the inner surface of the fixing member.

5. The angle detection device according to claim 3, characterized in that: The magnetic member protrudes from the outer surface of the rotating member; or The end surface of the magnetic pole of the magnetic member is flush with the outer surface of the rotating member.

6. The angle detection device according to claim 1, characterized in that: The fixing member is a columnar structure, and the X detection elements are arranged on the outer surface of the fixing member; The rotating member is a cylindrical structure, the rotating member is sleeved outside the fixed member, and each magnetic member group is arranged on the inner surface of the rotating member.

7. The angle detection device according to any one of claims 1 to 6, characterized in that: Along the circumferential direction of the rotating member, 2 to the power of X magnetic member groups are evenly distributed on the rotating member.

8. The angle detection device according to any one of claims 1 to 6, characterized in that: One of the 2 to the power of X magnetic component groups is a reference group; Taking the reference group as the initial position, the rotation angle between two adjacent magnetic member groups gradually increases or decreases along the circumferential direction of the rotating member.

9. The angle detection device according to claim 8, characterized in that: The amplitude of the increase or decrease of the rotation angle between two adjacent magnetic component groups gradually increases.

10. The angle detection device according to any one of claims 1 to 6, characterized in that: The detection element includes a Hall element.

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