Three-way acceleration sensor testing device

Abstract

The utility model belongs to the technical field of testing devices, and particularly relates to a three-direction acceleration sensor testing device, a first rotating part is rotatably arranged on a testing table by taking a first direction as a rotating axis, and a first locking structure is arranged on the testing table and / or the first rotating part and is used for fixing the first rotating part; the second rotating part is rotationally arranged on the first rotating part with the second direction as the rotating axis, and a second locking structure is arranged on the first rotating part and / or the second rotating part and used for fixing the second rotating part. The third rotating part is used for installing a three-direction acceleration sensor, the third rotating part is rotationally arranged on the second rotating part with the third direction as the rotating axis, and a third locking structure is arranged on the second rotating part and / or the third rotating part and used for fixing the third rotating part; the first direction, the second direction and the third direction are correspondingly three positive axis directions of the three-dimensional coordinate system. According to the utility model, the orientation of the three-direction acceleration sensor can be rapidly switched on the same testing device, the operation of switching the testing direction is simplified, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing devices, and particularly relates to a three-axis acceleration sensor testing device. Background Art

[0002] A three-axis acceleration sensor can measure the acceleration values in three axial directions (X, Y, and Z). In order to ensure the measurement accuracy of the three-axis acceleration sensor during use, it needs to be tested and calibrated before use. During specific testing, the single-axis acceleration sensor is fixed on a movable or rotatable test bench through a corresponding support. Since the three-axis acceleration sensor needs to be tested separately in three directions, after the test in a single direction is completed, it is necessary to remove the three-axis acceleration sensor and its support, replace the support suitable for other directions, install the three-axis acceleration sensor, and then fix the support on the test bench to perform the test in another direction. The operation is rather troublesome and the efficiency is low. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a three-axis acceleration sensor testing device that can quickly switch the orientation of the three-axis acceleration sensor on the same testing device, simplifies the operation of switching the testing direction, and improves the testing efficiency.

[0004] The content of the utility model includes:

[0005] A test bench that can be moved or rotated;

[0006] A first rotating member that is rotatably arranged on the test bench with a first direction as the rotation axis, and a first locking structure is provided on the test bench and / or the first rotating member for fixing the first rotating member;

[0007] A second rotating member that is rotatably arranged on the first rotating member with a second direction as the rotation axis, and a second locking structure is provided on the first rotating member and / or the second rotating member for fixing the second rotating member;

[0008] A third rotating member for installing the three-axis acceleration sensor, which is rotatably arranged on the second rotating member with a third direction as the rotation axis, and a third locking structure is provided on the second rotating member and / or the third rotating member for fixing the third rotating member;

[0009] The first direction, the second direction, and the third direction correspond to the three positive axis directions of a three-dimensional coordinate system.

[0010] Furthermore, the first locking structure includes a pressing block and a first bolt. The pressing block is fixedly arranged on the test bench, the first bolt is threadedly penetrated through the pressing block, and the end of the first bolt faces the first rotating member or the rotating connection between the first rotating member and the test bench.

[0011] Further, the rotation axes of the first rotating member, the second rotating member, and the third rotating member correspondingly pass through their central regions. The installation position of the triaxial acceleration sensor on the third rotating member is centrally arranged in the central region of the third rotating member, and the perpendicular line passing through the central region of the third rotating member and perpendicular to the test bench passes through the central regions of the second rotating member and the first rotating member.

[0012] Further, there are two or more supports arranged on the first rotating member. The second rotating member is located between two or more of the supports and is rotatably connected to at least one of the supports. The second locking structure is arranged on at least one of the two or more supports. The second locking structure is a second bolt, and the second bolt is threadedly inserted through the support where it is located, and the end of the second bolt faces the second rotating member or the rotational connection between the second rotating member and the first rotating member.

[0013] Further, there are four supports. The four supports are circumferentially and equidistantly arranged on the first rotating member around the rotation axis of the first rotating member. The second rotating member is rotatably connected to two relatively arranged supports among them, and the second bolts are threadedly inserted through all four supports.

[0014] Further, the second rotating member is annular, and the third rotating member is rotatably arranged inside the second rotating member.

[0015] Further, the third locking structure is a third bolt. The third bolt is threadedly inserted through the second rotating member, and the end of the third bolt faces the third rotating member or the rotational connection between the third rotating member and the second rotating member.

[0016] Further, the test bench rotates. The position of the first rotating member on the test bench is eccentric with respect to the rotation axis of the test bench, and several counterweights are detachably arranged at the position symmetrical to the position of the first rotating member on the test bench.

[0017] Further, several threaded holes are arranged at the position symmetrical to the position of the first rotating member on the test bench, and threads matching the threaded holes are arranged on several counterweights.

[0018] Further, it further includes a rotary drive mechanism and a slip ring. The rotating shaft of the rotary drive mechanism is connected to the test bench. The slip ring is arranged on the rotating shaft of the rotary drive mechanism. The wire of the stationary part of the slip ring is used to connect to an external device, and the wire of the rotating part of the slip ring is used to connect to the triaxial acceleration sensor.

[0019] The beneficial effects of the present utility model are as follows. After the three-axis acceleration sensor is installed on the rotating member three, there is no need to remove the three-axis acceleration sensor after testing in a single direction and then reinstall it using a support suitable for other directions. By respectively adjusting and fixing the angles of the rotating member one, the rotating member two, and the rotating member three, the orientation of the three-axis acceleration sensor can be quickly switched on the same testing device, realizing the attitude adjustment of the three-axis acceleration sensor in the three orientations of X, Y, and Z, performing acceleration tests and acquisitions in multiple directions, meeting the multi-orientation testing requirements. During the testing process, the steps of repeatedly disassembling and assembling the three-axis acceleration sensor and its support are omitted, thereby simplifying the operation of switching the testing direction and improving the testing efficiency. Moreover, the switching of the above orientations is achieved by a mechanical structure, without the connection of electrical components, and also avoids problems such as wiring difficulties and complex circuit connections caused by adding electrical components.

[0020] In addition, since the rotating member three is arranged on the rotating member two and the rotating member two is arranged on the rotating member one in the present utility model, the installation area required on the testing table is smaller, which is beneficial to controlling the size of the testing table and reducing the testing error caused by the inertia of the testing table. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the first use attitude of the three-axis acceleration sensor testing device of the present utility model.

[0022] Figure 2 For the present utility model Figure 1 is a top view.

[0023] Figure 3 It is a schematic structural diagram of the second use attitude of the three-axis acceleration sensor testing device of the present utility model.

[0024] Figure 4 For the present utility model Figure 3 is a top view.

[0025] Figure 5 It is a schematic structural diagram of the third use attitude of the three-axis acceleration sensor testing device of the present utility model.

[0026] Figure 6 For the present utility model Figure 5 is a top view.

[0027] In the figure: 1, testing table; 11, pressing block; 12, bolt one; 13, threaded hole; 2, rotating member one; 21, support; 22, bolt two; 3, rotating member two; 31, bolt three; 4, rotating member three; 5, rotation driving mechanism; 6, slip ring; 7, weighted acceleration sensor; 8, three-axis acceleration sensor. Detailed Embodiments

[0028] As Figures 1-6As shown in the figure, the utility model includes a test bench 1, a first rotating member 2, a second rotating member 3 and a third rotating member 4. The test bench 1 can move or rotate. The first rotating member 2 is rotatably arranged on the test bench 1 with the first direction as the rotation axis, and a first locking structure is arranged on the test bench 1 and / or the first rotating member 2 for fixing the first rotating member 2 after it rotates to the corresponding position. The second rotating member 3 is rotatably arranged on the first rotating member 2 with the second direction as the rotation axis, and a second locking structure is arranged on the first rotating member 2 and / or the second rotating member 3 for fixing the second rotating member 3 after it rotates to the corresponding position. The third rotating member 4 is used for installing a three-axis acceleration sensor 8. The third rotating member 4 is rotatably arranged on the second rotating member 3 with the third direction as the rotation axis, and a third locking structure is arranged on the second rotating member 3 and / or the third rotating member 4 for fixing the third rotating member 4 after it rotates to the corresponding position. Among them, the first direction, the second direction and the third direction respectively correspond to the three positive axis directions (X, Y, Z) of a three-dimensional coordinate system. Based on the above settings, the first rotating member 2, the second rotating member 3 and the third rotating member 4 together form a three-axis flipping mechanism on the test bench 1 that can install the three-axis acceleration sensor 8. By rotating the test bench 1 to provide angular velocity, the horizontal distance between the three-axis acceleration sensor 8 and the rotation axis of the test bench 1 is r, the acceleration direction is radial (pointing to the rotation axis of the test bench 1), and the acceleration a = ω 2 r.

[0029] Based on the above settings, after the three-axis acceleration sensor 8 is installed on the third rotating member 4, there is no need to remove the three-axis acceleration sensor 8 after testing in a single direction and then reinstall it using a support suitable for other directions. By respectively adjusting the angles of the first rotating member 2, the second rotating member 3 and the third rotating member 4 and fixing them, the orientation of the three-axis acceleration sensor 8 can be quickly switched on the same test device, realizing the attitude adjustment of the three-axis acceleration sensor 8 in the three XYZ orientations, conducting acceleration test acquisitions in multiple directions, meeting the multi-orientation test requirements, and omitting the steps of repeatedly disassembling and assembling the three-axis acceleration sensor 8 and its support during the test process. Thus, the operation of switching the test direction is simplified and the test efficiency is improved. The switching of the above orientations is realized by a mechanical structure, without the connection of electrical components, and also avoids problems such as wiring difficulties and complex circuit connections caused by adding electrical components.

[0030] In addition, compared with the setting form in which three supports applicable to different test directions are independently arranged on the test bench 1 and the three-axis acceleration sensor 8 is installed on different supports to adjust the direction for testing, since it is necessary to arrange multiple supports on the test bench 1, the area of the installation area required will increase, and the relative position of the three-axis acceleration sensor 8 on the test bench 1 will change. In the present utility model, since the rotating member three 4 is arranged on the rotating member two 3 and the rotating member two 3 is arranged on the rotating member one 2, the area of the installation area required on the test bench 1 is smaller, which is beneficial to the control of the size of the test bench 1 and reduces the test error caused by the inertia of the test bench 1.

[0031] The first locking structure includes a pressing block 11 and a first bolt 12. The pressing block 11 is fixedly arranged on the test bench 1. The first bolt 12 is threadedly inserted through the pressing block 11, and the end of the first bolt 12 faces the rotating member one 2 or the rotating connection between the rotating member one 2 and the test bench 1. Taking the case where the end of the first bolt 12 faces the rotating member one 2 as an example, by loosening the first bolt 12, the rotating member one 2 can rotate under the action of an external force. After rotating in place, the first bolt 12 is tightened so that the end of the first bolt 12 abuts against the rotating member one 2 or the end of the first bolt 12 penetrates into the screw hole opened on the rotating member one 2, and thus the rotating member one 2 can be fixed. This adjustment method is simple and convenient, with low setting cost and firm and reliable.

[0032] In a preferred embodiment of the present utility model, the rotation axis of the rotating member one 2 passes through its central region (central point), the rotation axis of the rotating member two 3 passes through its central region, the rotation axis of the rotating member three 4 passes through its central region. The installation position of the three-axis acceleration sensor 8 on the rotating member three 4 is centrally arranged in the central region of the rotating member three 4, and the perpendicular line of the central region of the rotating member three 4 perpendicular to the test bench 1 passes through the central regions of the rotating member two 3 and the rotating member one 2, that is, the central regions of the rotating member one 2, the rotating member two 3, and the rotating member three 4 are located on the same perpendicular line perpendicular to the test bench 1. Based on this setting, the three-axis acceleration sensor 8 is always centrally arranged relative to the rotating member one 2, the rotating member two 3, and the rotating member three 4 after adjusting the orientation, that is, the relative position of the three-axis acceleration sensor 8 on the test bench 1 does not change after adjusting the orientation. In the solution where the test bench 1 is a rotating table and a counterweight is arranged on the test bench 1 to eliminate the test error caused by the angular momentum difference, after adjusting the orientation of the three-axis acceleration sensor 8, it is not necessary to readjust the position and quantity of the counterweight to maintain balance, further simplifying the operation during orientation switching and improving the test efficiency.

[0033] Based on the foregoing preferred embodiments, two or more supports 21 are provided on the first rotating member 2. The second rotating member 3 is located between two or more of the supports 21 and is rotatably connected to at least one of the supports 21. The second locking structure is provided on at least one of the two or more supports 21. The second locking structure is a second bolt 22. The second bolt 22 is threadedly inserted through the support 21 where it is located, and the end of the second bolt 22 is arranged towards the second rotating member 3, or towards the rotational connection between the second rotating member 3 and the first rotating member 2. Taking the example where the end of the second bolt 22 is arranged towards the second rotating member 3, by loosening the second bolt 22, the second rotating member 3 can be rotated under the action of an external force. After rotating to the appropriate position, the second bolt 22 is tightened so that the end of the second bolt 22 abuts against the second rotating member 3, or the end of the second bolt 22 is inserted into a threaded hole opened on the second rotating member 3, thereby fixing the second rotating member 3. This setting method not only realizes that the central regions of the first rotating member 1 and the second rotating member 2 are on the same vertical line perpendicular to the test bench 1, but also has a simple and convenient adjustment method, low setting cost, and is stable and reliable.

[0034] Among them, when the second rotating member 3 is a disc-shaped structure, after it rotates 90°, as Figure 3 shown, the second rotating member 3 is in a vertical posture, and the second bolt 22 used to lock the second rotating member 3 in the original horizontal posture can no longer cooperate with the second rotating member 3. Therefore, threaded holes can be provided at multiple positions on the support 21. When the second rotating member 3 rotates to a vertical posture, after the second bolt 22 is screwed into the threaded hole on the support 21 corresponding to the vertical posture of the second rotating member 3, then the end of the second bolt 22 is made to abut against the second rotating member 3, or the end of the second bolt 22 is inserted into a threaded hole opened on the second rotating member 3 to realize the fixation of the second rotating member 3 in the vertical posture; when the second rotating member 3 rotates to a horizontal posture, after the second bolt 22 is screwed into the threaded hole on the support 21 corresponding to the horizontal posture of the second rotating member 3, then the end of the second bolt 22 is made to abut against the second rotating member 3, or the end of the second bolt 22 is inserted into a threaded hole opened on the second rotating member 3 to realize the fixation of the second rotating member 3 in the horizontal posture.

[0035] In the present utility model, there are four supports 21. The four supports 21 are circumferentially and equidistantly arranged on the first rotating member 2 around the rotation axis of the first rotating member 2. The second rotating member 3 is rotatably connected to two relatively arranged supports 21 among them through a rotating shaft to ensure the rotational support stability of the second rotating member 3. The second bolts 22 are threadedly inserted through all four supports 21 to ensure the reliability of fixing the second rotating member 3 in the horizontal posture.

[0036] The second rotating member 3 is annular, and the third rotating member 4 is rotatably arranged inside the second rotating member 3 through a rotating shaft. Based on this setting method, it not only realizes that the central regions of the first rotating member 2, the second rotating member 3, and the third rotating member 4 are on the same vertical line perpendicular to the test bench 1, but also the second rotating member 3 can be used as the installation structure of the third rotating member 4, reducing the setting of additional brackets.

[0037] The locking structure three is the bolt three 31. The bolt three 31 is threaded through the rotating member two 3, and the end of the bolt three 31 faces the rotating member three 4, or faces the rotation connection between the rotating member three 4 and the rotating member two 3. Taking the end of the bolt two 22 facing the rotation connection between the rotating member three 4 and the rotating member two 3 as an example, a rotating shaft is provided on the side of the rotating member three 4. The rotating shaft is threaded through the rotating member two 3 and is rotationally matched with the rotating member two 3. By loosening the bolt three 31, the rotating member three 4 can rotate under the action of an external force. After rotating in place, the bolt three 31 is tightened so that the end of the bolt three 31 abuts against the rotating shaft on the side of the rotating member three 4, and the rotating member three 4 can be fixed. This adjustment method is simple and convenient, with low setting cost and firm and reliable.

[0038] Based on the above settings, taking Figure 1 and Figure 2 the shown perspective as the initial posture for explanation, when the rotating member two 3 and the rotating member three 4 maintain their original postures, by changing the angle of the rotating member one 2, the posture of the three-axis acceleration sensor 8 can be changed in the corresponding direction; as Figure 3 and Figure 4 shown, when the rotating member one 2 and the rotating member three 4 maintain their original postures, by changing the angle of the rotating member two 3, the posture of the three-axis acceleration sensor 8 can be changed in the corresponding direction; as Figure 5 and Figure 6 shown, when the rotating member one 2 and the rotating member two 3 maintain their original postures, by changing the angle of the rotating member three 4, the posture of the three-axis acceleration sensor 8 can be changed in the corresponding direction; when changing the angles of at least two of the rotating member one, the rotating member two 3 and the rotating member three 4, the posture of the three-axis acceleration sensor 8 can be changed in multiple directions.

[0039] When the test bench 1 is moving, it moves in a straight line, and the movement of the test bench 1 is driven by a corresponding linear drive mechanism.

[0040] Preferably, in the present invention, the test bench 1 specifically rotates, that is, it is a rotary table structure. Compared with the straight-line movement method, the variable-speed control difficulty is lower and the test stability is better. The position of the rotating member one 2 on the test bench 1 is eccentric with respect to the rotation axis of the test bench 1. A plurality of counterweights are detachably arranged at the position symmetrical to the position of the rotating member one 2 on the test bench 1. The moment of inertia can be adjusted by adding or reducing the counterweights to eliminate the angular momentum difference on the test bench 1, so that the test bench 1 can maintain balance during the test.

[0041] A plurality of threaded holes 13 are provided at a position on the test bench 1 that is symmetric to the position of the first rotating member 2. Threads that cooperate with the threaded holes 13 are provided on the plurality of counterweight members. The disassembly and assembly of the counterweight members are realized by means of threaded connection, making it simpler and more convenient to increase or decrease the counterweight members. Moreover, the added counterweight members have high stability on the test bench 1 and are not easily loosened due to rotation. Preferably, a counterweight acceleration sensor 7 is further provided on the test bench 1. This counterweight acceleration sensor 7 uses the same type of sensor as the triaxial acceleration sensor 8 to be measured, and is symmetric to the triaxial acceleration sensor 8 to be measured with respect to the rotation axis of the test bench 1. On the one hand, it can play a role in participating in the counterweight. On the other hand, it can also be set as a reference acceleration sensor according to actual test requirements. By comparing its data with the data measured by the triaxial acceleration sensor 8 for the target test, it can reflect whether there is a deviation in the test result.

[0042] The present invention further includes a rotation drive mechanism 5 and a slip ring 6. The rotation axis of the rotation drive mechanism 5 is connected to the test bench 1, and the axis of the rotation axis of the rotation drive mechanism 5 is the rotation axis of the test bench 1. The slip ring 6 is provided on the rotation axis of the rotation drive mechanism 5. The wires of the stationary part of the slip ring 6 are used to connect to external devices, and the wires of the rotating part of the slip ring 6 are used to connect to the triaxial acceleration sensor 8. Based on this setting method, the power supply and signal transmission between the rotating triaxial acceleration sensor 8 and the fixed external device are realized, solving the problem of the contradiction between the external connection of the triaxial acceleration sensor on the test bench 1. Further, surge suppression can be used to absorb the interference overvoltage signal generated by the wear of the slip ring 6, and a filter circuit can be used to filter the high-frequency clutter of the signal line and the overvoltage surge on the power supply, solving the problem of signal "glitches".

[0043] The present invention further includes a host computer, an inverter, and a speed acquisition module. The rotation drive mechanism 5 is a servo motor, and the speed acquisition module can specifically be an optical encoder. The host computer is used for the overall control of the system, installs control and data processing software, and sends the processed results or abnormal alarms to the display module. The optical encoder acquires the speed signal and transmits it back to the host computer. Under the speed command of the host computer, it outputs an SPWM wave to drive the servo motor to rotate. The power supply provides the alternating current required by the inverter and the low-voltage direct current power supply required by the acceleration sensor respectively. Through the closed-loop control of the inverter, the servo motor, and the optical encoder, the rotation speed of the servo motor can be accurately controlled, and an accurate acceleration can be provided for the triaxial acceleration sensor 8 to be measured.

[0044] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments in this application as described above, which are not provided in detail for the sake of brevity.

[0045] One or more embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this application shall be included within the scope of protection of this application.

Claims

1. A three-axis acceleration sensor testing device, characterized in that: include: A test bench (1), wherein the test bench (1) is movable or rotatable; A rotating member 1 (2), the rotating member 1 (2) being rotatably arranged on the test bench (1) with a first direction as a rotation axis, and a locking structure 1 being arranged on the test bench (1) and / or the rotating member 1 (2) for fixing the rotating member 1 (2); Rotating member 2 (3), the rotating member 2 (3) being rotatably arranged on the rotating member 1 (2) with the second direction as the rotation axis, and a locking structure 2 is arranged on the rotating member 1 (2) and / or the rotating member 2 (3) for fixing the rotating member 2 (3); Rotating member three (4) is used to mount a three-axis acceleration sensor (8), the rotating member three (4) being rotatably arranged on rotating member two (3) with the third direction as the rotation axis, and a locking structure three is arranged on rotating member two (3) and / or rotating member three (4) for fixing rotating member three (4); The first direction, the second direction and the third direction correspond to three positive axis directions of the three-dimensional coordinate system.

2. The three-axis acceleration sensor testing device according to claim 1, characterized in that: The locking structure 1 comprises a pressure block (11) and a bolt 1 (12); the pressure block (11) is fixedly arranged on the test bench (1); the bolt 1 (12) is threadedly inserted into the pressure block (11); and the end of the bolt 1 (12) is arranged toward the rotating member 1 (2), or toward the rotating connection between the rotating member 1 (2) and the test bench (1).

3. The three-axis acceleration sensor testing device according to claim 1 or 2, characterized in that: The rotation axes of the rotating member 1 (2), the rotating member 2 (3) and the rotating member 3 (4) pass through their central areas respectively; the installation position of the three-axis acceleration sensor (8) on the rotating member 3 (4) is centrally arranged in the central area of ​​the rotating member 3 (4), and a vertical line perpendicular to the test bench (1) along the central area of ​​the rotating member 3 (4) passes through the central areas of the rotating member 2 (3) and the rotating member 1 (2).

4. The three-axis acceleration sensor testing device as claimed in claim 3, characterized in that: The rotating member 1 (2) is provided with more than two supports (21), the rotating member 2 (3) is located between the more than two supports (21) and is rotatably connected to at least one of the supports (21), the locking structure 2 is provided on at least one of the more than two supports (21), the locking structure 2 is a bolt 2 (22), the bolt 2 (22) is threadedly inserted into the support (21) where it is located, and the end of the bolt 2 (22) is arranged toward the rotating member 2 (3), or toward the rotational connection between the rotating member 2 (3) and the rotating member 1 (2).

5. The three-axis acceleration sensor testing device as claimed in claim 4, characterized in that: There are four supports (21), which are equidistantly arranged on the rotating member (2) around the rotation axis of the rotating member (2). The rotating member (2) is rotatably connected to two supports (21) arranged opposite to each other, and bolts (22) are threadedly penetrated on the four supports (21).

6. The three-axis acceleration sensor testing device as claimed in claim 4, characterized in that: The second rotating member (3) is annular, and the third rotating member (4) is rotatably arranged inside the second rotating member (3).

7. The three-axis acceleration sensor testing device according to claim 6, characterized in that: The locking structure three is a bolt three (31), which is threadedly inserted into the rotating member two (3), and the end of the bolt three (31) is arranged toward the rotating member three (4), or toward the rotating connection between the rotating member three (4) and the rotating member two (3).

8. The three-axis acceleration sensor testing device according to any one of claims 1, 2, 4-7, characterized in that: The test bench (1) is designed to rotate, the position of the rotating part 1 (2) on the test bench (1) is eccentrically arranged relative to the rotation axis of the test bench (1), and a plurality of counterweights are detachably arranged on the test bench (1) at positions symmetrical to the rotating part 1 (2).

9. The three-axis acceleration sensor testing device as claimed in claim 8, characterized in that: A plurality of threaded holes (13) are provided on the test bench (1) at positions symmetrical to the rotating member 1 (2), and a plurality of the counterweight members are provided with threads matching the threaded holes (13).

10. The three-axis acceleration sensor testing device according to any one of claims 1, 2, 4-7, and 9, characterized in that: It also includes a rotary drive mechanism (5) and a slip ring (6), wherein the rotary shaft of the rotary drive mechanism (5) is connected to the test bench (1), the slip ring (6) is arranged on the rotary shaft of the rotary drive mechanism (5), the wire of the stationary part of the slip ring (6) is used to connect to an external device, and the wire of the rotating part of the slip ring (6) is used to connect to a three-dimensional acceleration sensor (8).

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