CN217877727U - Calibration testing device for inertia measurement unit - Google Patents

Abstract

The application provides an inertia measurement unit calibration testing device, and relates to the technical field of inertia measurement units. The method comprises the following steps: the first testing mechanism is provided with an accommodating cavity and a fixing part, the accommodating cavity is configured into a structure for accommodating at least one part of the inertia measuring unit, the fixing part is configured in the accommodating cavity along the vertical direction, and the fixing part penetrates through the inertia measuring unit; and the second testing mechanism is connected above the first testing mechanism and is provided with an abutting part, and the abutting part is adjusted along the vertical direction so as to abut against the inertia measuring unit. First accredited testing organization is provided with the fixed part, holds the chamber and holds when inertia measurement unit, fixes through the fixed part, second accredited testing organization set up in first accredited testing organization's top, and be provided with butt portion on the second accredited testing organization, butt portion can be followed the upper and lower direction and adjusted to exert the power of a vertical direction to inertia measurement unit, can eliminate the interference of stress, play the effect of result fidelity.

Description

Calibration testing device for inertia measurement unit

Technical Field

The application relates to the technical field of inertial measurement units, in particular to an inertial measurement unit calibration testing device.

Background

With the development of the MEMS technology, the MEMS inertial sensor based on the MEMS technology becomes an important research content in the field, and is also an important direction for the development of the inertial technology; due to the fact that the market demand of the MEMS inertial sensor is larger and larger, the realization of mass calibration is important, and on the other hand, due to the fact that the performance of the sensor can be influenced by the surrounding environment, the sensor needs to be calibrated again frequently to guarantee the measurement accuracy.

At present, in the process of testing a sensor, the sensor is often under the action of stress, and then the indexes of product testing are influenced.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an inertia measurement unit calibration testing device which can eliminate stress interference and play a role in result fidelity.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides an inertial measurement unit calibration testing apparatus, including: the first testing mechanism and the second testing mechanism are distributed along the up-down direction; the first testing mechanism is provided with an accommodating cavity and a fixing part, the accommodating cavity is configured to accommodate at least one part of an inertia measuring unit, the fixing part is configured in the accommodating cavity along the vertical direction, and the fixing part is used for fixing the inertia measuring unit; the second testing mechanism is connected above the first testing mechanism and is provided with a butting part which can be adjusted along the vertical direction so as to butt against the inertia measuring unit.

In the implementation process, the inertia measurement unit calibration testing device is used for testing the inertia measurement unit, wherein the first testing mechanism is provided with a fixing part, when the accommodating cavity accommodates the inertia measurement unit, the fixing part is used for fixing, the second testing mechanism is arranged above the first testing mechanism, the second testing mechanism is provided with an abutting part, and the abutting part can be adjusted along the vertical direction so as to apply a force in the vertical direction to the inertia measurement unit, so that the interference of stress can be eliminated, and the effect of result fidelity is achieved.

In some embodiments, the first test mechanism includes a first test structure and a mounting structure configured to receive a structure of at least a portion of the inertial measurement unit, the first test structure being configured to the mounting structure, the structure of at least a portion of the first test structure being disposed through the mounting structure, and the structure of the portion being configured to couple to the inertial measurement unit.

In the implementation process, the installation structure can contain the inertia measurement unit, the first test structure is connected below the installation structure, and at least one part of the first test structure penetrates through the installation structure and is connected with the inertia measurement unit to form the fixation of the inertia measurement unit.

In some embodiments, the first test structure includes a pin plate assembly and a floating plate, the pin plate assembly having probe members sequentially penetrating the mounting structure and the floating plate, at least a portion of the structure of the floating plate being disposed inside the mounting structure.

In the process of above-mentioned realization, the faller subassembly is provided with probe spare, and probe spare can be worn to locate the kickboard to form fixedly to inertia measurement unit, and set up the kickboard in mounting structure's inside, can increase overall structure's steadiness.

In some embodiments, the probe members are arranged in two rows along a front-to-back direction of the faller bar assembly, the probe members being configured to be at least partially receivable in abutment slots provided on the inertial measurement unit.

In the process of above-mentioned realization, the probe spare is provided with two rows, is provided with the butt groove that is used for holding the probe spare on the inertia measurement unit to through the adaptation in probe spare and butt groove, accomplish faller subassembly fixed to inertia measurement unit, but the frictional force that reduces greatly improves the convenience that inertia measurement unit got and was put.

In some embodiments, the faller assembly comprises an upper faller, a faller member and a lower faller which are sequentially stacked from top to bottom, the probe member is arranged on the lower faller, through grooves are arranged at positions corresponding to the upper faller, the faller member and the lower faller, and the probe member penetrates through the through grooves.

In some embodiments, the periphery of the floating plate is further provided with at least one fixing pin along the up-down direction, and the fixing pin is used for matching with a corresponding positioning through hole on the inertial measurement unit and fixing the inertial measurement unit.

At the in-process of above-mentioned realization, be provided with the fixed pin on the kickboard for when inertial measurement unit connects on the kickboard, inertial measurement unit can be worn to establish by the fixed pin, in order to form the fixed to inertial measurement unit, can avoid causing the harm to inertial measurement unit, also reduces frictional force greatly, improves the convenience that inertial measurement unit got and put.

In some embodiments, the second test mechanism includes a cover structure and a second test structure, the cover structure being hingedly connected to the mounting structure and configured to receive structure of at least a portion of the second test structure such that the structure of the portion abuts the inertial measurement unit when the second test structure is adjusted in the up-down direction relative to the cover structure.

In the process of the implementation, the second test structure is arranged on the cover body structure, and at least one part of the second test structure is located inside the cover body structure, so that when the second test structure is adjusted, the part of the structure can move in the vertical direction, the fixing of the inertia measurement unit in the vertical direction is completed, and the inertia measurement unit is conveniently tested by a product.

In some embodiments, the second testing structure includes an adjusting member and an abutting member, one end of the abutting member is connected to the adjusting member, and the other end of the abutting member is disposed inside the cover structure, so that when the adjusting member is adjusted, the abutting member moves along the up-down direction.

In the process of realizing, the abutting part is connected to the adjusting part, and when the adjusting part is adjusted, the abutting part can move in the vertical direction relative to the cover body structure, so that the inertia measuring unit is fixed in the vertical direction, and the stability of the inertia measuring unit in the test process is improved.

In some embodiments, the second test structure further includes a pressing member, the pressing member is connected to the cover structure, and an end of the abutting member away from the adjusting member abuts against the pressing member, so that when the adjusting member is adjusted, the pressing member moves in the up-down direction with respect to the cover structure.

In the process of the realization, the pressing piece is connected with the cover body structure, the abutting piece and the pressing piece form abutting, when the adjusting piece is adjusted, the abutting piece can drive the pressing piece to move downwards, and then the fixing of the inertia measuring unit is realized.

In some embodiments, a pressing block is protruded from a side of the pressing member facing away from the cover structure, and the pressing block corresponds to a structure of at least a part of the first test structure.

In some embodiments, the inertia measurement unit calibration testing device further comprises a lock catch, the lock catch is hinged to the second testing mechanism, a locking portion is configured on the first testing mechanism, the lock catch is matched with the locking portion, and the first testing mechanism and the second testing mechanism can be connected through connection of the lock catch and the locking portion, so that the inertia measurement unit is fixed, and the stability in the testing process is improved.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a cross-sectional view of an inertial measurement unit calibration test device disclosed in an embodiment of the present application.

Fig. 2 is an exploded schematic view of an inertial measurement unit calibration test device disclosed in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a first testing mechanism of an inertial measurement unit calibration testing device disclosed in an embodiment of the present application.

Fig. 4 is a schematic structural diagram of an inertial measurement unit calibration test device disclosed in an embodiment of the present application.

Reference numerals

100. A first testing mechanism; 101. a first test structure; 1011. a needle plate assembly; 1012. a floating plate; 10121. a probe member; 10122. a fixing pin; 102. a mounting structure; 200. a second testing mechanism; 201. a second test structure; 2011. an adjustment member; 20111. screwing a cover; 20112. c, hand buckling; 2012. an abutting member; 2013. a compression member; 20131. briquetting; 2014. a connecting plate; 202. a cover structure; 300. locking; 400. an inertial measurement unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.

Examples

The inventor finds that the inertial measurement unit is often required to be fixed in the process of calibrating and testing the inertial measurement unit, and the conventional method ensures that the product is fixed by applying a force to the periphery of the product and applying a force which cannot be adjusted to the upper part of the product; however, in the process of the change test, the test seat deforms under the temperature change, so that the stress influence is generated on the product, and the product test index is influenced; and because the product is fixed all around, the product is got and is put the in-process and can produce the friction with the test seat.

In view of the above, as shown in fig. 1, fig. 1 is a cross-sectional view of an inertial measurement unit calibration testing apparatus disclosed in the embodiment of the present application; in a first aspect, the present application provides an inertial measurement unit calibration testing apparatus, including: a first testing mechanism 100 and a second testing mechanism 200 distributed along the up-down direction; the first testing mechanism 100 has an accommodating cavity configured to accommodate at least a part of the inertial measurement unit 400, and a fixing portion configured to fix the inertial measurement unit 400 along the vertical direction; the second testing mechanism 200 is connected above the first testing mechanism 100, and the second testing mechanism 200 has an abutting portion that is adjustable in the vertical direction to abut against the inertia measuring unit 400.

Illustratively, the Inertial Measurement Unit calibration testing device is used for performing calibration testing on the Inertial Measurement Unit 400, and the Inertial Measurement Unit 400 (MIMU) is an important MEMS, and is composed of a micro gyroscope, a micro accelerometer, an Application Specific Integrated Circuit (ASIC), an embedded microcomputer and corresponding navigation software, and can provide position, velocity and attitude information of a moving carrier.

The first testing mechanism 100 is provided with a containing cavity, the containing cavity is used for containing the inertia measuring unit 400, the containing cavity is in clearance fit with the inertia measuring unit 400, a clearance can be set to be 0.1 mm-0.5 mm, for example, 0.2mm and the like, so that the friction force between the inertia measuring unit 400 and the first testing mechanism 100 can be reduced in the process of testing the inertia measuring unit 400 conveniently, and the convenience for taking and placing the inertia measuring unit 400 is improved.

In the implementation process, the calibration testing device for the inertia measurement unit is used for testing the inertia measurement unit 400, wherein the first testing mechanism 100 is provided with a fixing part, when the accommodating cavity accommodates the inertia measurement unit 400, the fixing part is used for fixing, the second testing mechanism 200 is arranged above the first testing mechanism 100, and the second testing mechanism 200 is provided with an abutting part which can be adjusted in the vertical direction so as to apply a vertical force to the inertia measurement unit 400, so that the interference of stress can be eliminated, and the effect of result fidelity is achieved.

As shown in fig. 2-3, the first testing mechanism 100 includes a first testing structure 101 and a mounting structure 102, the mounting structure 102 is configured to receive at least a portion of the inertial measurement unit 400, the first testing structure 101 is configured to be mounted to the mounting structure 102, and at least a portion of the first testing structure 101 is configured to be inserted into the mounting structure 102 and configured to be connected to the inertial measurement unit 400.

Illustratively, the mounting structure 102 has the receiving cavity, the first testing structure 101 is fixedly connected below the mounting structure 102, and the connection manner may be bolts, and the like, and at least a part of the first testing structure 101 is configured to penetrate through the mounting structure 102, so that when the inertial measurement unit 400 is placed on the mounting structure 102, the first testing structure 101 penetrating through the mounting structure 102 can limit the position of the inertial measurement unit 400, and ensure the stability of the inertial measurement unit 400 during the testing process.

In the implementation process, the mounting structure 102 may accommodate the inertia measurement unit 400, the first testing structure 101 is connected below the mounting structure 102, and at least a part of the first testing structure 101 penetrates through the mounting structure 102 and is connected with the inertia measurement unit 400 to fix the inertia measurement unit 400.

Referring to fig. 3 again, the first testing structure 101 includes a pin plate assembly 1011 and a floating plate 1012, the pin plate assembly 1011 has probe members 10121, the probe members 10121 sequentially penetrate through the mounting structure 102 and the floating plate 1012, and at least a part of the floating plate 1012 is disposed inside the mounting structure 102.

Exemplarily, faller subassembly 1011 includes faller, faller spare and goes up the faller down, down the faller spare reaches go up the faller edge the upper and lower direction distributes, just faller fixed connection down in the below of faller spare, go up faller fixed connection in the top of faller spare, accessible bolt wears to locate in proper order faller down faller spare reaches go up the faller, and be fixed in on the mounting structure 102, and it is right in order to realize faller subassembly 1011 protects, faller subassembly 1011 with be provided with connecting plate 2014 between the mounting structure 102, and pass through the bolt is fixed.

Wherein probe spare 10121 set up in on the faller down, go up the faller spare with the position department that the faller corresponds down is provided with logical groove, probe spare 10121 wears to locate in proper order logical groove reaches kickboard 1012, kickboard 1012 is located mounting structure 102 holds the intracavity, just the upper end height of kickboard 1012 can set to be not higher than mounting structure 102's upper end height, certainly also does not exclude the upper end of kickboard 1012 is higher than mounting structure 102's upper end.

In the above implementation process, the needle plate assembly 1011 is provided with the probe member 10121, the probe member 10121 can be arranged on the floating plate 1012 in a penetrating manner, the inertia measurement unit 400 is fixed, and the floating plate 1012 is arranged inside the mounting structure 102, so that the stability of the whole structure can be improved.

In some embodiments, the probe members 10121 are arranged in two rows along the front-back direction of the needle plate assembly 1011, and the probe members 10121 are configured to be at least partially received in the abutting grooves provided on the inertial measurement unit 400.

For example, the probe members 10121 are provided with a plurality of probe bodies, the plurality of probe bodies are distributed at intervals along the left and right direction of the needle plate assembly 1011, wherein the number and the distance between the probe bodies and the distance between two rows of probe members 10121 distributed along the front and back direction are not specially limited, and the probe bodies can be set according to the actual situation of the inertia measurement unit 400, which is not described in detail herein.

In the process of above-mentioned realization, probe spare 10121 is provided with two rows, is provided with the butt groove that is used for holding probe spare 10121 on the inertia measurement unit 400 to through the adaptation of probe spare 10121 with the butt groove, accomplish the fixed of faller subassembly 1011 to inertia measurement unit 400, can reduce frictional force greatly, improve the convenience that inertia measurement unit 400 got and was put.

In some embodiments, the peripheral edge of the floating plate 1012 is further provided with at least one fixing pin 10122 along the up-down direction, the fixing pin 10122 is configured at least one, and the fixing pin 10122 is used for matching with a corresponding positioning through hole on the inertial measurement unit 400 and fixing the inertial measurement unit 400. For example, the floating plate 1012 may be configured to accommodate at least a portion of the inertial measurement unit 400, and one or more fixing pins 10122 may be provided, and when two fixing pins 10122 are provided, two fixing pins 10122 may be provided at opposite corners of the inertial measurement unit 400, so that the inertial measurement unit 400 may be conveniently attached and detached.

In the process of the above-mentioned realization, be provided with the fixed pin 10122 on the kickboard 1012 for when inertial measurement unit 400 connects on the kickboard 1012, the fixed pin 10122 can wear to establish inertial measurement unit 400, in order to form the fixed to inertial measurement unit 400, can avoid causing the harm to inertial measurement unit 400, also reduces frictional force greatly, improves the convenience that inertial measurement unit 400 got and put.

Referring to fig. 3-4, the second testing mechanism 200 includes a cover structure 202 and a second testing structure 201, the cover structure 202 is hinged to the mounting structure 102, and the cover structure 202 is configured to accommodate at least a portion of the second testing structure 201, such that when the second testing structure 201 is adjusted relative to the cover structure 202 along the up-down direction, the portion of the second testing structure abuts against the inertia measurement unit 400.

Illustratively, the cover structure 202 is provided with through grooves distributed along the up-down direction, and a part of the second test structure 201 is located in the through grooves, so that when a user adjusts the second test structure 201, the part of the second test structure 201 can move relative to the through grooves, thereby compressing the inertia measurement unit 400 in the up-down direction.

In the implementation process, the second test structure 201 is disposed on the cover structure 202, and at least a part of the second test structure 201 is located inside the cover structure 202, so that when the second test structure 201 is adjusted, the part of the second test structure can move in the vertical direction, thereby fixing the inertia measurement unit 400 in the vertical direction, and facilitating a product to test the inertia measurement unit 400.

In some embodiments, the second testing structure 201 includes an adjusting member 2011 and an abutting member 2012, one end of the abutting member 2012 is connected to the adjusting member 2011, and the other end of the abutting member 2012 is disposed inside the cap structure 202, so that when the adjusting member 2011 is adjusted, the abutting member 2012 moves in the up-down direction and abuts against the inertia measuring unit 400.

Illustratively, the adjusting member 2011 includes a screw cap 20111 and a hand buckle 20112, the abutting member 2012 includes but is not limited to a screw rod, one end of the hand buckle 20112 is provided with the screw cap 20111, and the other end of the hand buckle 20112 is connected to the screw rod, wherein the hand buckle 20112 and the screw rod can be fixed in a threaded connection manner, and accordingly, an internal thread can be provided in a through groove of the cover structure 202 to adapt to the screw rod.

In the above implementation process, the abutting piece 2012 is connected to the adjusting piece 2011, and when the adjusting piece 2011 is adjusted, the abutting piece 2012 can move vertically relative to the cover structure 202, so that the inertial measurement unit 400 can be fixed vertically, and the stability of the inertial measurement unit 400 in the test process is improved.

In some embodiments, the second test structure 201 further includes a pressing element 2013, the pressing element 2013 is connected to the cover structure 202 (specifically, the pressing element 2013 may be connected to the cover structure 202 through an elastic structure, and the elastic structure may be a return spring, etc.), one end of the abutting element 2012 departing from the adjusting element 2011 abuts against the pressing element 2013, so as to adjust the adjusting element 2011, the pressing element 2013 moves in the up-down direction with respect to the cover structure 202, where the pressing element 2013 may also be fixed to the cover structure 202 through an elastic element (for example, an elastic element, as long as the pressing element 2013 can move up and down with respect to the cover structure 202).

In the implementation process, the pressing part 2013 is connected with the cover structure 202, the abutting part 2012 and the pressing part 2013 form an abutting joint, and when the adjusting part 2011 is adjusted, the abutting part 2012 can drive the pressing part 2013 to move down, so that the inertia measurement unit 400 is fixed.

In some embodiments, a pressing block 20131 protrudes from a side of the pressing member 2013 facing away from the cover structure 202, and the pressing block 20131 corresponds to a structure of at least a part of the first test structure 101; specifically, the pressing block 20131 is disposed above the probe 10121 of the first test structure 101, so that when the pressing block 2013 moves downward, the protrusion can also limit the inertia measurement unit 400 to a certain extent.

In some embodiments, the inertia measurement unit calibration testing apparatus further includes a lock catch 300, the lock catch 300 is hinged to the second testing mechanism 200, a locking portion is configured on the first testing mechanism 100, the lock catch 300 is adapted to the locking portion, and the first testing mechanism 100 and the second testing mechanism 200 can be connected through the connection between the lock catch 300 and the locking portion, so that the inertia measurement unit 400 is ensured to be fixed, and the stability in the testing process is improved.

Exemplarily, the hasp 300 has free end and locking end, the free end with the locking end sets up relatively, the locking end be used for with locking portion locks, the free end is located the top of locking end, second accredited testing organization 200 corresponds the position of free end can be provided with dodges the groove, so that be used for dodging when hasp 300 rotates, the operator can pass through from the end simultaneously, makes the hasp 300 can round second accredited testing organization 200 rotates, and then realizes the locking end with locking portion locking or unclamp.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. An inertial measurement unit calibration test device, comprising: the first testing mechanism and the second testing mechanism are distributed along the up-down direction;

the first testing mechanism is provided with an accommodating cavity and a fixing part, the accommodating cavity is configured to accommodate at least one part of an inertia measuring unit, the fixing part is configured in the accommodating cavity along the vertical direction, and the fixing part is used for fixing the inertia measuring unit;

the second testing mechanism is connected above the first testing mechanism and is provided with a butting part which can be adjusted along the vertical direction so as to butt against the inertia measuring unit.

2. The inertial measurement unit calibration test device of claim 1, wherein the first test mechanism comprises a first test structure and a mounting structure, the mounting structure configured to receive at least a portion of the structure of the inertial measurement unit, the first test structure configured to the mounting structure, at least a portion of the structure of the first test structure configured to be coupled to the inertial measurement unit, and the mounting structure through which the structure of the first test structure is configured to be coupled to the inertial measurement unit.

3. The inertial measurement unit calibration test device according to claim 2, wherein the first test structure comprises a pin plate assembly and a floating plate, the pin plate assembly having a probe member, the probe member sequentially penetrating through the mounting structure and the floating plate, at least a part of the structure of the floating plate being disposed inside the mounting structure.

4. The inertial measurement unit calibration test device of claim 3, wherein the probe pieces are arranged in two rows in a front-to-back direction of the faller bar assembly, the probe pieces being configured to be at least partially receivable in abutting slots provided on the inertial measurement unit.

5. The inertia measurement unit calibration testing device of claim 3, wherein the needle plate assembly comprises an upper needle plate, a needle plate member and a lower needle plate which are sequentially stacked from top to bottom, the probe member is disposed on the lower needle plate, through grooves are disposed at positions corresponding to the upper needle plate, the needle plate member and the lower needle plate, and the probe member is inserted in the through grooves.

6. The inertia measurement unit calibration test device of claim 3, wherein a fixing pin is further disposed on the periphery of the floating plate along the up-down direction, at least one fixing pin is disposed on the fixing pin, and the fixing pin is configured to match with a corresponding positioning through hole on the inertia measurement unit and fix the inertia measurement unit.

7. The inertial measurement unit calibration test device of claim 2, wherein the second test mechanism comprises a cover structure and a second test structure, the cover structure being hinged to the mounting structure and configured to receive at least a portion of the second test structure such that the portion of the second test structure abuts the inertial measurement unit when adjusted relative to the cover structure in the up-down direction.

8. The inertial measurement unit calibration test device of claim 7, wherein the second test structure comprises an adjustment member and an abutment member, one end of the abutment member is connected to the adjustment member, and the other end of the abutment member is disposed inside the cover structure, so that when the adjustment member is adjusted, the abutment member moves in the up-down direction.

9. The inertial measurement unit calibration testing device of claim 8, wherein the second testing structure further comprises a pressing member, the pressing member is connected to the cover structure, and an end of the abutting member, which is away from the adjusting member, abuts against the pressing member, so that when the adjusting member is adjusted, the pressing member moves in the up-and-down direction with respect to the cover structure.

10. The inertial measurement unit calibration test device of claim 9, wherein a pressing block is convexly provided on a side of the pressing member facing away from the cover structure, the pressing block corresponding to a structure of at least a portion of the first test structure.

11. The inertia measurement unit calibration test device of claim 1, further comprising a latch hinged to the second test mechanism, wherein the first test mechanism is configured with a locking portion, and the latch is adapted to the locking portion.

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