Dual-axis gyroscope and electronic device

Abstract

The application provides a dual-axis gyroscope and an electronic device. The dual-axis gyroscope comprises a first mass block, a second mass block, a driving device and a detection device. The first mass block can swing in a first plane around a first anchor point, and the first mass block can swing around a first central axis of the first anchor point; the second mass block can swing in the first plane around a second anchor point, and the second mass block can swing around a second central axis of the second anchor point; a plurality of first mass blocks are distributed along a second direction, a plurality of second mass blocks are distributed along the second direction, adjacent first mass blocks are connected through first coupling connecting rods for strong coupling, and adjacent second mass blocks are connected through second coupling connecting rods for strong coupling. The accuracy of the displacement ratio of the first mass block and the second mass block is improved, and the working accuracy and stability of the dual-axis gyroscope are improved. Meanwhile, the requirement for the machining precision of the first mass block and the second mass block is reduced, and the machining cost of the dual-axis gyroscope and the electronic device is reduced.

Description

[Technical Field]

[0001] This invention relates to the field of gyroscope technology, and more particularly to a dual-axis gyroscope and electronic device. [Background Technology]

[0002] A dual-axis gyroscope is a typical micro-sensor of angular velocity, capable of detecting the angular velocity of an electronic device as it rotates around a first axis and a second axis. Due to its advantages such as small size, low power consumption, and ease of processing, it has a very wide range of applications in the electronics market.

[0003] Existing dual-axis gyroscopes include multiple first mass blocks and multiple second mass blocks. The first mass blocks are used to detect the angular velocity of the electronic device when it rotates around a first axis, and the second mass blocks are used to detect the angular velocity of the electronic device when it rotates around a second axis. There is weak coupling between adjacent first mass blocks and between adjacent second mass blocks. That is, during the process of detecting angular velocity by the dual-axis gyroscope, there are significant differences in motion parameters such as the moving distance and rotation angle between the multiple first mass blocks. Similarly, there are significant differences in motion parameters such as the moving distance and rotation angle between the multiple second mass blocks, which affects the detection accuracy, the accuracy of the detection results, and the reliability of the gyroscope.

[0004] Therefore, it is necessary to provide a dual-axis gyroscope with smaller differences in motion parameters between the mass blocks. [Summary of the Invention]

[0005] The purpose of this invention is to provide a dual-axis gyroscope with small differences in motion parameters between mass blocks.

[0006] The technical solution of the present invention is as follows:

[0007] The first aspect of the present invention provides a dual-axis gyroscope, comprising:

[0008] The first mass block is capable of swinging about the first anchor point in the first plane, and the first mass block is capable of swinging about the first central axis of the first anchor point.

[0009] The second mass block is capable of swinging about the second anchor point in the first plane, and the second mass block is capable of swinging about the second central axis of the second anchor point.

[0010] The plane containing the length and width directions of the dual-axis gyroscope is the first plane. The first central axis and the second central axis are both located in the first plane. Of the first central axis and the second central axis, one is parallel to the length direction of the dual-axis gyroscope, and the other is parallel to the width direction of the dual-axis gyroscope.

[0011] The first mass block and the second mass block are distributed along the first direction, and multiple first mass blocks are distributed along the second direction. The swing directions of adjacent first mass blocks are opposite. The multiple second mass blocks are distributed along the second direction. The swing directions of adjacent second mass blocks are opposite. In the first direction and the second direction, one is the length direction of the dual-axis gyroscope, and the other is the width direction of the dual-axis gyroscope.

[0012] Adjacent first mass blocks are strongly coupled together by a first coupling link, and adjacent second mass blocks are strongly coupled together by a second coupling link;

[0013] A driving device is connected to the first mass block and the second mass block respectively to drive the first mass block and the second mass block to swing in the first plane;

[0014] The detection device is capable of detecting the swing angle of the first mass block around the first central axis and the swing angle of the second mass block around the second central axis.

[0015] In some embodiments, the first coupling link includes a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion and the second connecting portion are disposed opposite to each other on both sides of the third connecting portion along a first direction. At least a portion of the first connecting portion and at least a portion of the second connecting portion extend along a second direction, and the first connecting portion and the second connecting portion are respectively connected to an adjacent first mass block.

[0016] In some embodiments, the second coupling link includes a fourth connecting portion, a fifth connecting portion, and a sixth connecting portion. The fourth connecting portion and the fifth connecting portion are disposed opposite to each other on both sides of the sixth connecting portion along a first direction. At least a portion of the fourth connecting portion and at least a portion of the fifth connecting portion extend along a second direction, and the fourth connecting portion and the fifth connecting portion are respectively connected to an adjacent second mass block.

[0017] In some embodiments, the driving device includes a driving member, a driving decoupling structure, and a coupling beam. The driving member is fixedly connected to the driving decoupling structure. The driving decoupling structure is connected to the first mass block through the coupling beam. The driving decoupling structure is connected to the second mass block through the coupling beam. The driving member can drive the decoupling structure to move along a second direction to drive the first mass block and the second mass block to swing in a first plane.

[0018] In some embodiments, multiple drive decoupling structures are distributed along a first direction, a first mass block is located between adjacent drive decoupling structures, a second mass block is located between adjacent drive decoupling structures, and the first mass block and the second mass block are connected by a coupling beam and a drive decoupling structure.

[0019] In some embodiments, the driving element includes a capacitor driving structure and / or an inductor driving structure.

[0020] In some embodiments, at least a portion of the coupling beam is a deformable structure, and at least a portion of the coupling beam can undergo elastic deformation when the first mass block swings about a first central axis and the second mass block swings about a second central axis.

[0021] In some embodiments, the dual-axis gyroscope further includes a torsion beam, and the first mass block and the first anchor point, as well as the second mass block and the second anchor point, are connected by the torsion beam;

[0022] When the first mass block and the second mass block swing, at least a portion of the torsion beam can undergo elastic deformation.

[0023] In some embodiments, the detection device includes a differential detection structure, which includes a differential capacitor and / or a differential inductor.

[0024] A second aspect of the present invention provides an electronic product comprising:

[0025] ontology;

[0026] The dual-axis gyroscope described in any of the above items is mounted on the main body.

[0027] The beneficial effects of this invention are as follows: Strong coupling between the first and second mass blocks of the dual-axis gyroscope reduces the rotation angle errors between the first and second mass blocks during operation, thereby improving the accuracy of the displacement ratio between the first and second mass blocks, enhancing the operational accuracy and stability of the dual-axis gyroscope, and consequently improving the operational stability of the electronic device. Simultaneously, the improved accuracy of the displacement ratio between the first and second mass blocks through strong coupling reduces the precision requirements for their machining, thus lowering the manufacturing cost of the dual-axis gyroscope and the electronic device. Furthermore, the increased frequency difference between the driving and detection modes and interference modes of the dual-axis gyroscope enhances its anti-interference performance, further improving its operational stability and reliability. Meanwhile, when the dual-axis gyroscope is in detection mode, the motion between the first mass block and the second mass block is decoupled. That is, in the first detection mode, the first mass block oscillates, while there is no relative motion between the second mass block and the second anchor point. In the second detection mode, the second mass block oscillates, while there is no relative motion between the first mass block and the first anchor point. This reduces the cross-interference between the angular velocities in the first and second directions, reduces the impact of orthogonal errors, and improves the signal-to-noise ratio of the device. [Attached Image Description]

[0028] Figure 1 A schematic diagram of the structure of a dual-axis gyroscope provided by the present invention in one embodiment;

[0029] Figure 2 for Figure 1 A top view showing the dual-axis gyroscope in a non-operating state;

[0030] Figure 3 for Figure 1 A top view showing the dual-axis gyroscope in drive mode;

[0031] Figure 4 for Figure 1 A schematic diagram of the structure of the dual-axis gyroscope in the first detection mode;

[0032] Figure 5 for Figure 1 A schematic diagram of the structure of the dual-axis gyroscope in the second detection mode;

[0033] Figure 6 for Figure 2 Enlarged view of Part I;

[0034] Figure 7 for Figure 2 Enlarged view of Part II;

[0035] Figure 8 for Figure 2 Enlarged view of section III.

[0036] Figure label:

[0037] 1-First motion component;

[0038] 11 - First mass block;

[0039] 12 - First Anchor Point;

[0040] 13-First coupling link;

[0041] 131 - First connecting part;

[0042] 132 - Second connecting part;

[0043] 133 - Third connecting part;

[0044] 14 - First extension rod;

[0045] 15 - Second extension rod;

[0046] 16 - Third Anchor Point;

[0047] 2-Second motion component;

[0048] 21-Second mass block;

[0049] 22 - Second Anchor Point;

[0050] 23-Second coupling link;

[0051] 231-Fourth connecting part;

[0052] 232-Fifth connecting part;

[0053] 233-Sixth connecting part;

[0054] 3-Drive device;

[0055] 31-Driver;

[0056] 32-Drive decoupling structure;

[0057] 321 - First drive decoupling structure;

[0058] 322 - Second drive decoupling structure;

[0059] 323 - Third drive decoupling structure;

[0060] 33-Coupled beam;

[0061] 34-Drive beam;

[0062] 4- Torsion beam;

[0063] 5 - Fourth anchor point.

Detailed Implementation Methods

[0064] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0065] The first aspect of this invention provides a dual-axis gyroscope, such as... Figures 1 to 5 As shown, the dual-axis gyroscope includes a first motion component 1, a second motion component 2, a drive device 3, and a detection device (not shown in the figure). Figure 3 , Figure 4 and Figure 5 As shown, the first motion component 1 includes a first mass block 11 and a first anchor point 12. The first mass block 11 can swing around the first anchor point 12 in a first plane, and the first mass block 11 can swing around the first central axis of the first anchor point 12. The second motion component 2 includes a second mass block 21 and a second anchor point 22. The second mass block 21 can swing around the second anchor point 22 in a first plane, and the second mass block 21 can swing around the second central axis of the second anchor point 22. The driving device 3 is connected to the first mass block 11 and the second mass block 21 respectively to drive the first mass block 11 and the second mass block 21 to swing in the first plane. The detection device is used to detect the swing angle of the first mass block 11 around the first central axis and the swing angle of the second mass block 21 around the second central axis, so as to detect the angular velocity applied by the external environment received by the dual-axis gyroscope.

[0066] like Figure 1 and Figure 2As shown, the plane containing the length and width directions of the dual-axis gyroscope is the first plane. The first central axis and the second central axis are both located in the first plane. Of the first central axis and the second central axis, one is parallel to the length direction of the dual-axis gyroscope, and the other is parallel to the width direction of the dual-axis gyroscope. For ease of description, in this invention, the width direction of the dual-axis gyroscope is the first direction X, the length direction of the dual-axis gyroscope is the second direction Y, the height direction of the dual-axis gyroscope is the third direction Z, the first central axis is parallel to the second direction Y, and the second central axis is parallel to the first direction X.

[0067] When the dual-axis gyroscope is not powered on, the dual-axis gyroscope is in a state such as Figure 1 and Figure 2 The non-working state shown refers to the state when the dual-axis gyroscope is powered on, such as... Figure 3 As shown, the first mass block 11 and the second mass block 21 swing around the first anchor point 12 and the second anchor point 22 under the action of the driving device 3. At this time, the dual-axis gyroscope is in the driving mode. When the dual-axis gyroscope is subjected to an externally applied angular velocity, taking the dual-axis gyroscope installed on an electronic device as an example, that is, when the electronic device rotates around the first direction X, as... Figure 4 As shown, the first mass block 11 oscillates around the first central axis under the action of the Coriolis force. The first central axis is parallel to the second direction Y, causing the dual-axis gyroscope to switch to the first detection mode. At this time, the detection device detects the rotation angle of the first mass block 11 and transmits the detection data to the computing system (not shown in the figure). The computing system calculates the magnitude of the angular velocity applied to the dual-axis gyroscope based on the received data. When the electronic device rotates around the second direction Y, as... Figure 5 As shown, the second mass block 21 swings around the second central axis under the action of the Coriolis force. The second central axis is parallel to the first direction X, causing the dual-axis gyroscope to switch to the second detection mode. At this time, the detection device will detect the rotation angle of the second mass block 21 and transmit the detection structure to the computing system (not shown in the figure). The computing system calculates the magnitude of the angular velocity applied to the dual-axis gyroscope based on the received data.

[0068] Specifically, such as Figure 1 and Figure 2 As shown, the first motion component 1 and the second motion component 2 are distributed along the first direction X, and multiple first motion components 1 are distributed along the second direction Y, and multiple second motion components 2 are distributed along the second direction Y. That is, the first mass block 11 and the second mass block 21 are distributed along the first direction X, and multiple first mass blocks 11 are distributed along the second direction Y. The swing directions of adjacent first mass blocks 11 are opposite, and the swing directions of adjacent second mass blocks 21 are opposite. Adjacent first mass blocks 11 are strongly coupled together by the first coupling link 13, and adjacent second mass blocks 21 are strongly coupled together by the second coupling link 23.

[0069] In this embodiment, adjacent first mass blocks 11 are strongly coupled together by a first coupling link 13, and adjacent second mass blocks 21 are strongly coupled together by a second coupling link 23. This reduces the risk of large swing angle errors between adjacent first mass blocks 11 and adjacent second mass blocks 21, thereby improving the displacement ratio between adjacent first mass blocks 11 and adjacent second mass blocks 21. This, in turn, improves the accuracy of the testing device in detecting the rotation angles of the first mass blocks 11 and the second mass blocks 21, and further improves the working stability and accuracy of the dual-axis gyroscope.

[0070] Meanwhile, in addition to the driving mode and the detection mode, the dual-axis gyroscope also includes an interference mode. The adjacent first mass blocks 11 are strongly coupled and the adjacent second mass blocks 21 are strongly coupled, which increases the frequency difference between the driving mode, the detection mode and the interference mode of the dual-axis gyroscope, thereby improving the anti-interference performance of the dual-axis gyroscope, and thus improving the working stability and reliability of the dual-axis gyroscope.

[0071] Adjacent first mass blocks 11 are connected by a first coupling link 13, such as Figure 3 As shown, when a first mass block 11 rotates clockwise around the first anchor point 12, the adjacent first mass block 11 will rotate counterclockwise around the first anchor point 12 under the pull of the first coupling link 13. Similarly, adjacent second mass blocks 21 are connected by a second coupling link 23. When a second mass block 21 rotates clockwise around the second anchor point 22, the adjacent second mass block 21 will rotate counterclockwise around the second anchor point 22 under the pull of the second coupling link 23. Therefore, by connecting adjacent first mass blocks 11 with the first coupling link 13 and adjacent second mass blocks 21 with the second coupling link 23, the opposite motion directions between adjacent first mass blocks 11 and adjacent second mass blocks 21 are achieved, while simplifying the structure of the first motion component 1 and the second motion component 2, thereby reducing the production cost of the dual-axis gyroscope.

[0072] Specifically, such as Figure 2 and Figure 6 As shown, the first coupling link 13 includes a first connecting part 131, a second connecting part 132 and a third connecting part 133. The first connecting part 131 and the second connecting part 132 are disposed opposite to each other on both sides of the third connecting part 133 along the first direction X. At least a portion of the first connecting part 131 and at least a portion of the second connecting part 132 extend along the second direction Y, and the first connecting part 131 and the second connecting part 132 are respectively connected to the adjacent first mass block 11.

[0073] In this embodiment, the first coupling link 13 has a Z-shaped structure. When one end of the first coupling link 13 rotates clockwise under the drive of the first mass block 11, the other end of the first coupling link 13 can drive the adjacent first mass block 11 to rotate counterclockwise, thereby realizing the reverse swing between the adjacent first mass blocks 11. Therefore, the first coupling link 13 is configured as a first connecting part 131 extending along the second direction Y, a third connecting part 133 extending along the first direction X, and a second connecting part 132 extending along the second direction Y, which simplifies the structure of the first coupling link 13 and reduces the processing cost of the first coupling link 13. In addition, the first coupling link 13 can also be other deformed structures to increase the structural flexibility of the first coupling link 13.

[0074] like Figure 6 As shown, the third connecting part 133 is also connected to a first extension rod 14 and a second extension rod 15 extending along the second direction Y. The first extension rod 14 and the second extension rod 15 extend in opposite directions, and the first extension rod 14 and the second extension rod 15 are respectively connected to the third anchor point 16. Along the first direction X, the first extension rod 14 and the second extension rod 15 are located between the first connecting part 131 and the second connecting part 132.

[0075] like Figure 2 and Figure 7 As shown, the second coupling link 23 includes a fourth connecting part 231, a fifth connecting part 232 and a sixth connecting part 233. The fourth connecting part 231 and the fifth connecting part 232 are disposed opposite to each other on both sides of the sixth connecting part 233 along the first direction X. At least a portion of the fourth connecting part 231 and at least a portion of the fifth connecting part 232 extend along the second direction Y, and the fourth connecting part 231 and the fifth connecting part 232 are respectively connected to the adjacent second mass block 21.

[0076] In this embodiment, the second coupling link 23 has a Z-shaped structure. When one end of the second coupling link 23 rotates clockwise under the drive of the second mass block 21, the other end of the second coupling link 23 can drive the adjacent second mass block 21 to rotate counterclockwise, thereby realizing the reverse swing between the adjacent second mass blocks 21. Therefore, the first coupling link 13 is configured as a fourth connecting part 231 extending along the second direction Y, a fifth connecting part 232 extending along the first direction X, and a sixth connecting part 233 extending along the second direction Y, which simplifies the structure of the second coupling link 23 and reduces the processing cost of the second coupling link 23. In addition, the second coupling link 23 can also be other deformed structures to increase the structural flexibility of the second coupling link 23.

[0077] The second coupling link 23 has a different structure from the first coupling link 13 to distinguish between the first detection mode and the second detection mode, thereby improving the reliability of the monitoring results of the dual-axis gyroscope.

[0078] like Figure 2 As shown, the driving device 3 includes a driving component 31, a driving decoupling structure 32, and a coupling beam 33. The driving component 31 is fixedly connected to the driving decoupling structure 32. The driving decoupling structure 32 is connected to the first mass block 11 and to the second mass block 21 through the coupling beam 33. The driving component 31 can drive the decoupling structure 32 to move along the second direction Y, so as to drive the first mass block 11 and the second mass block 21 to swing in the first plane.

[0079] The driving component 31 includes a capacitor driving structure and / or an inductor driving structure.

[0080] In this embodiment, the driving device 31 can be implemented in ways including but not limited to a capacitor driving structure and an inductor driving structure. This application does not impose any special limitations on the specific implementation of the driving device 31 in order to increase the structural flexibility of the driving device 31 and thus increase the applicability of the driving device 31.

[0081] Specifically, such as Figure 2 As shown, multiple drive decoupling structures 32 are distributed along the first direction X. The first mass block 11 is located between adjacent drive decoupling structures 32, and the second mass block 21 is located between adjacent drive decoupling structures 32. The first mass block 11 and the second mass block 21 are connected by a coupling beam 33 and the drive decoupling structure 32.

[0082] In this embodiment, as Figure 2 As shown, the drive decoupling structure 32 includes a first drive decoupling structure 321, a second drive decoupling structure 322, and a third drive decoupling structure 323 distributed along the first direction X. The first motion component 1 is located between the first drive decoupling structure 321 and the second drive decoupling structure 322, and the second motion component 2 is located between the second drive decoupling structure 322 and the third drive decoupling structure 323. The first mass block 11 and the second mass block 21 are connected by a coupling beam 33 and the second drive decoupling structure 322. When the dual-axis gyroscope is in drive mode, the first drive decoupling structure 321, the second drive decoupling structure 322, and the third drive decoupling structure 323 all move along the second direction Y. The first drive decoupling structure 321 and the third drive decoupling structure 323 move in the same direction, while the first drive decoupling structure 321 moves in the opposite direction to the second drive decoupling structure 322, and the third drive decoupling structure 323 moves in the opposite direction to the second drive decoupling structure 322, thereby causing the first mass block 11 and the second mass block 21 to swing in opposite directions.

[0083] like Figure 2 As shown, at least a portion of the coupling beam 33 is a deformable structure. When the first mass block 11 swings around the first central axis and the second mass block 21 swings around the second central axis, at least a portion of the coupling beam 33 can undergo elastic deformation.

[0084] In this embodiment, the first mass block 11 is connected to the first drive decoupling structure 321 and the second drive decoupling structure 322, and the second mass block 21 is connected to the second drive decoupling structure 322 and the third drive decoupling structure 323 via coupling beams 33. The coupling beams 33 have high rigidity within the first plane and can undergo elastic deformation in the plane outside the first plane. That is, when the dual-axis gyroscope is in drive mode, the drive unit 31 can drive the rotation of the first mass block 11 and the second mass block 21 by driving the decoupling structure 32 and the coupling beams 33 in the second direction Y. Because the coupling beams 33 have high rigidity within the first plane, the accuracy of the drive unit 31 in controlling the motion state of the first mass block 11 and the second mass block 21 is improved. When the dual-axis gyroscope is in detection mode, such as... Figure 4 and Figure 5 As shown, when the first mass block 11 or the second mass block 21 rotates to outside the first plane, the coupling beam 33 can undergo elastic deformation, thereby reducing the influence of the coupling beam 33 on the motion state of the first mass block 11 and the second mass block 21, and improving the stability and accuracy of the motion state of the first mass block 11 and the second mass block 21 outside the first plane. At the same time, the first mass block 11 and the second mass block 21 are respectively connected to the drive decoupling structure 32 through the coupling beam 33. When the dual-axis gyroscope is in the detection mode, the coupling beam 33 can undergo elastic deformation, reducing the risk of the drive decoupling structure 32 moving under the drive of the first mass block 11 or the second mass block 21, thereby realizing the motion decoupling between the first mass block 11 and the drive decoupling structure 32, and between the second mass block 21 and the drive decoupling structure 32, and improving the working stability of the dual-axis gyroscope.

[0085] like Figure 2 As shown, multiple first anchor points 12 are provided along the second direction Y, and one first mass block 11 is connected to one first anchor point 12. Similarly, multiple second anchor points 22 are provided along the second direction Y, and one second mass block 21 is connected to one second anchor point 22. Along the second direction Y, coupling beams 33 are connected to the first mass blocks 11 located at both ends and to the second mass blocks 21 located at both ends, thereby simplifying the connection method between coupling beams 33 and the first mass blocks 11, and between coupling beams 33 and the second mass blocks 21.

[0086] In any of the above embodiments, the driving element 31 is mounted on the driving decoupling structure 32, and the plurality of driving elements 31 are spaced apart along the extension direction of the driving decoupling structure 32.

[0087] In any of the above embodiments, such as Figure 2As shown, the drive device 3 also includes a drive beam 34, and the drive decoupling structure 32 is connected to the fourth anchor point 5 through the drive beam 34. Multiple drive beams 34 and fourth anchor points 5 are arranged along the second direction Y.

[0088] In any of the above embodiments, such as Figure 2 and Figure 8 As shown, the dual-axis gyroscope also includes a torsion beam 4. The first mass block 11 and the first anchor point 12, and the second mass block 21 and the second anchor point 22 are all connected by the torsion beam 4. The first mass block 11 and the first anchor point 12 are connected by the first torsion beam, and the second mass block 21 and the second anchor point 22 are connected by the second torsion beam.

[0089] In this embodiment, when the dual-axis gyroscope is in the first detection mode, the first mass block 11 rotates while the second torsion beam remains stationary, thus preventing relative motion between the second mass block 21 and the second anchor point 22. Similarly, when the dual-axis gyroscope is in the second detection mode, the second mass block 21 rotates while the first torsion beam remains stationary, preventing relative motion between the first mass block 11 and the first anchor point 12. This reduces the mutual influence between the motion states of the first mass block 11 and the second mass block 21, thereby reducing the cross-coupling between the first mass block 11 and the second mass block 21 and improving the working stability and signal-to-noise ratio of the dual-axis gyroscope.

[0090] In any of the above embodiments, the detection device includes a differential detection structure. The first mass block 11 and the second mass block 21 are differentially detected through the differential detection structure, thereby reducing the interference of external electrical and mechanical noise and improving the signal-to-noise ratio of the dual-axis gyroscope.

[0091] The differential detection structure includes differential capacitors and / or differential inductors.

[0092] In this embodiment, the differential detection structure can be implemented in ways including but not limited to capacitor structures and inductor structures. This application does not impose any special limitations on the specific implementation of the differential detection structure in order to increase the structural flexibility of the differential detection structure and thus increase the applicability of the differential detection structure.

[0093] A second aspect of the present invention provides an electronic product comprising: a body and a dual-axis gyroscope as described in any of the above embodiments, the dual-axis gyroscope being mounted on the body.

[0094] During the operation of electronic products, a dual-axis gyroscope can calculate the angular velocity of the electronic product's rotation around the first direction X and the second direction Y, facilitating the control of the electronic product. The dual-axis gyroscope features strong coupling between the first mass blocks 11 and between the second mass blocks 21, reducing the rotation angle errors between the first mass blocks 11 and the second mass blocks 21 during operation. This improves the accuracy of the displacement ratio between the first mass blocks 11 and the second mass blocks 21, thereby enhancing the accuracy and stability of the dual-axis gyroscope and consequently improving the operational stability of the electronic device. Simultaneously, the improved accuracy of the displacement ratio between the first mass blocks 11 and the second mass blocks 21 through strong coupling reduces the precision requirements for the machining of the first mass blocks 11 and the second mass blocks 21, thus lowering the manufacturing cost of the dual-axis gyroscope and the electronic device. Meanwhile, when the dual-axis gyroscope is in detection mode, the motion between the first mass block 11 and the second mass block 21 is decoupled. That is, in the first detection mode, the first mass block 11 swings, while there is no relative motion between the second mass block 21 and the second anchor point 22. In the second detection mode, the second mass block 21 swings, while there is no relative motion between the first mass block 11 and the first anchor point 12. This reduces the cross-interference between the angular velocity of the first direction X and the angular velocity of the second direction Y, reduces the impact of orthogonal error, and improves the signal-to-noise ratio of the device.

[0095] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A dual-axis gyroscope, characterized in that, The dual-axis gyroscope includes: The first mass block (11) is capable of swinging about the first anchor point (12) in the first plane, and the first mass block (11) is capable of swinging about the first central axis of the first anchor point (12). The second mass block (21) is capable of swinging about the second anchor point (22) in the first plane, and the second mass block (21) is capable of swinging about the second central axis of the second anchor point (22); The plane containing the length and width directions of the dual-axis gyroscope is the first plane. The first central axis and the second central axis are both located in the first plane. One of the first central axis and the second central axis is parallel to the length direction of the dual-axis gyroscope, and the other is parallel to the width direction of the dual-axis gyroscope. The first mass block (11) and the second mass block (21) are distributed along the first direction (X), and a plurality of the first mass blocks (11) are distributed along the second direction (Y). The swing directions of adjacent first mass blocks (11) are opposite. The plurality of second mass blocks (21) are distributed along the second direction (Y). The swing directions of adjacent second mass blocks (21) are opposite. In the first direction (X) and the second direction (Y), one is the length direction of the dual-axis gyroscope, and the other is the width direction of the dual-axis gyroscope. The adjacent first mass blocks (11) are strongly coupled together by a first coupling link (13), and the adjacent second mass blocks (21) are strongly coupled together by a second coupling link (23). The structures of the first coupling link (13) and the second coupling link (23) are different. A driving device (3) is connected to the first mass block (11) and the second mass block (21) respectively to drive the first mass block (11) and the second mass block (21) to swing in the first plane; The detection device is capable of detecting the swing angle of the first mass block (11) around the first central axis and the swing angle of the second mass block (21) around the second central axis.

2. The dual-axis gyroscope according to claim 1, characterized in that, The first coupling link (13) includes a first connecting part (131), a second connecting part (132) and a third connecting part (133). The first connecting part (131) and the second connecting part (132) are disposed opposite to each other on both sides of the third connecting part (133) along the first direction (X). At least a portion of the first connecting part (131) and at least a portion of the second connecting part (132) extend along the second direction (Y). The first connecting part (131) and the second connecting part (132) are respectively connected to the adjacent first mass block (11).

3. The dual-axis gyroscope according to claim 1, characterized in that, The second coupling link (23) includes a fourth connecting part (231), a fifth connecting part (232) and a sixth connecting part (233). The fourth connecting part (231) and the fifth connecting part (232) are disposed opposite to each other on both sides of the sixth connecting part (233) along the first direction (X). At least a portion of the fourth connecting part (231) and at least a portion of the fifth connecting part (232) extend along the second direction (Y). The fourth connecting part (231) and the fifth connecting part (232) are respectively connected to the adjacent second mass block (21).

4. The dual-axis gyroscope according to claim 1, characterized in that, The driving device (3) includes a driving component (31), a driving decoupling structure (32), and a coupling beam (33). The driving component (31) is fixedly connected to the driving decoupling structure (32). The driving decoupling structure (32) is connected to the first mass block (11) through the coupling beam (33). The driving decoupling structure (32) is connected to the second mass block (21) through the coupling beam (33). The driving component (31) can drive the driving decoupling structure (32) to move along the second direction (Y) to drive the first mass block (11) and the second mass block (21) to swing in the first plane.

5. The dual-axis gyroscope according to claim 4, characterized in that, Multiple drive decoupling structures (32) are distributed along the first direction (X), the first mass block (11) is located between adjacent drive decoupling structures (32), the second mass block (21) is located between adjacent drive decoupling structures (32), and the first mass block (11) and the second mass block (21) are connected by the coupling beam (33) and the drive decoupling structure (32).

6. The dual-axis gyroscope according to claim 4, characterized in that, The driving element (31) includes a capacitor driving structure and / or an inductor driving structure.

7. The dual-axis gyroscope according to claim 4 or 5, characterized in that, At least a portion of the coupling beam (33) is a deformable structure. When the first mass block (11) swings around the first central axis and the second mass block (21) swings around the second central axis, at least a portion of the coupling beam (33) can undergo elastic deformation.

8. The dual-axis gyroscope according to any one of claims 1 to 6, characterized in that, The dual-axis gyroscope also includes a torsion beam (4), through which the first mass block (11) and the first anchor point (12) are connected, and the second mass block (21) and the second anchor point (22) are connected; When the first mass block (11) and the second mass block (21) swing, at least a portion of the torsion beam (4) can undergo elastic deformation.

9. The dual-axis gyroscope according to any one of claims 1 to 6, characterized in that, The detection device includes a differential detection structure, which includes a differential capacitor and / or a differential inductor.

10. An electronic product, characterized in that, The electronic products include: ontology; The dual-axis gyroscope of claim 1, wherein the dual-axis gyroscope is mounted on the body.

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