Efficient calibration tool and calibration system

Abstract

The utility model discloses an efficient calibration tool and a calibration system, and the tool comprises a tool body which is provided with a plurality of product installation structures, signal connection modules which are disposed on the tool body and are in one-to-one correspondence with the product installation structures, and each signal connection module comprises a test accompanying module and a switching module. The first of the test accompanying module and the switching module is arranged on the tool body, and the second of the test accompanying module and the switching module is arranged on the side face, away from the tool body, of the first. According to the high-efficiency calibration tool provided by the utility model, the accompanying test module and the switching module are stacked in the vertical direction, so that compared with the existing design that an accompanying test plate and a switching plate are arranged in parallel, the occupied area size of a mounting position corresponding to a single product on the tool can be greatly reduced; and therefore, the tool can be provided with more product mounting structures. Compared with the existing tool for testing 10 products at most at one time, the tool provided by the utility model can be expanded to 20 products at most at one time, so that the testing efficiency of the tool is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, and in particular to a high-efficiency calibration tooling and calibration system. Background Technology

[0002] Inertial Measurement Units (IMUs) are widely used in aerospace, automotive, and robotics fields. To ensure the performance and accuracy of IMUs meet requirements, rigorous testing is necessary during their production and use. Existing IMU test fixtures typically include product placement positions and corresponding adapter and test plates. The dimensions of these adapter and test plates are roughly equivalent to the product dimensions, resulting in a large area occupied by each product within the IMU test fixture, limiting the number of products that can be placed on it. Current IMU test fixtures generally can only test a maximum of 10 products at a time. Furthermore, in existing IMU test fixtures, the materials of the product positioning carrier and the fixture body are inconsistent, leading to differences in their coefficients of thermal expansion. This makes such IMU test fixtures prone to momentary vibrations during aging tests. Additionally, the product placement positions in existing IMU test fixtures are difficult to maintain, requiring the removal of the test plates and adapters before the probe modules can be disassembled for maintenance. Utility Model Content

[0003] This utility model provides an efficient calibration fixture and calibration system to solve at least one of the above-mentioned problems in the prior art.

[0004] According to a first aspect of this utility model, a high-efficiency calibration fixture is provided, comprising:

[0005] The tooling body has several product mounting structures on it.

[0006] The signal connection module is mounted on the fixture body and corresponds one-to-one with the product mounting structure. It includes a test module and an adapter module. The first of the test module and the adapter module is mounted on the fixture body, and the second is mounted on the side of the first module away from the fixture body.

[0007] This utility model's high-efficiency calibration fixture, by vertically stacking the test module and the adapter module, significantly reduces the area occupied by the mounting position of a single product compared to existing designs that arrange the test board and adapter board side by side. This allows the fixture to accommodate more product mounting structures. Compared to existing fixtures that can test a maximum of 10 products at a time, this utility model's fixture can be expanded to test up to 20 products at a time, thus greatly improving the testing efficiency of the fixture during calibration testing.

[0008] In some embodiments, the tooling body includes a fixed base, and the product mounting structure and the signal connection module are both mounted on the fixed base.

[0009] Therefore, by adopting this configuration, an integrated fixed base can be used to replace the existing structure in which the product positioning carrier plate and the tooling body are made of different materials, thereby improving the overall stability of the tooling and making the overall tooling more stable during operation.

[0010] In some embodiments, the product mounting structure is detachably mounted on the tooling body, including a product mounting base, a product mounting groove provided on the product mounting base, and a probe assembly for connecting to the product disposed in the product mounting groove.

[0011] Therefore, this setup allows for the replacement of the product mounting structure according to the specifications of the product to be tested, adapting to different product models and specifications, and enabling simultaneous testing of multiple different models and specifications. Furthermore, since the probe assembly is mounted on the product mounting base, it can be disassembled and installed together with the product, significantly reducing the difficulty of tooling maintenance.

[0012] In some embodiments, a protective plate is provided on the side of the tooling body where the signal connection module is located, and the signal connection module is located between the tooling body and the protective plate.

[0013] Therefore, by setting it up in this way, the signal connection module can be protected using a protective plate.

[0014] In some embodiments, the tooling body is provided with a clamping device for fixing the product to the product mounting structure.

[0015] Therefore, by setting it up in this way, the product can be fixed on the product mounting structure using a clamping device, ensuring that it will not detach from the product mounting structure during testing.

[0016] In some embodiments, the clamping device includes a pressure plate disposed on one side of the tooling body where the product mounting structure is provided, and a tensioning component is provided between the pressure plate and the tooling body.

[0017] Therefore, this setup allows the product to be pressed together using pressure plates and tensioning components, preventing the product from detaching from the product mounting structure during testing.

[0018] In some embodiments, the tensioning assembly includes a guide stud disposed on the tooling body, and the pressure plate is provided with a positioning hole corresponding to the guide stud, and a nut matching the guide stud is disposed on the positioning hole.

[0019] Therefore, with this setup, the pressure plate can be positioned using guide studs and positioning holes, while the pressure plate can be pushed closer to the tooling body using nuts, so that the pressure plate presses against the product, preventing the product from detaching from the product mounting structure during testing.

[0020] In some embodiments, a pre-tightening assembly is further provided between the pressure plate and the tooling body, the pre-tightening assembly including locking blocks and buckles disposed on both sides of the tooling body.

[0021] Therefore, by using this configuration, the structure of the locking block and the buckle can be used to restrict the pressure plate from detaching from the tooling body, thereby forming a pre-compression of the product.

[0022] In some embodiments, the pressure plate is provided with elastic pressure heads that correspond one-to-one with the mounting structure of each product.

[0023] Therefore, by setting it up in this way, the product can be pressed by the elastic pressure head on the pressure plate. The elastic pressure head can prevent the pressure plate from forming rigid contact with the product, thus protecting the product from damage caused by excessive force.

[0024] According to a second aspect of the present invention, a calibration system is provided, comprising:

[0025] A calibration device is used to test and calibrate a product to be tested. The calibration device is equipped with the high-efficiency calibration fixture described in the first aspect above. The high-efficiency calibration fixture is provided with multiple product mounting structures for placing the product to be tested.

[0026] The control module, connected to the calibration equipment, is used to control the calibration equipment to perform test calibration on the product under test;

[0027] The data acquisition module connects to the product under test in the calibration equipment and is used to acquire data from the product under test in the calibration equipment.

[0028] The calibration system of this invention can utilize the aforementioned high-efficiency calibration fixture to simultaneously calibrate and test a large number of products, thereby significantly improving calibration and testing efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency calibration fixture according to one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the bottom structure of a high-efficiency calibration fixture according to one embodiment of the present invention;

[0032] Figure 3 This is an exploded view of the structure of a high-efficiency calibration fixture according to one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the product mounting structure and signal connection module of a high-efficiency calibration fixture according to one embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the detachable product mounting structure and fixed base of a high-efficiency calibration fixture according to one embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram of the calibration system according to one embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the calibration equipment in a calibration system according to an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the module connection of a calibration system according to one embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the module connection of a calibration system according to another embodiment of the present invention.

[0039] Explanation of reference numerals in the attached drawings: 1. Tooling body; 11. Fixed base; 12. Slot; 2. Product mounting structure; 21. Product mounting seat; 22. Product mounting slot; 23. Probe assembly; 3. Signal connection module; 31. Adapter module; 32. Accompanying test module; 4. Protective plate; 5. Clamping device; 51. Pressure plate; 52. Guide stud; 53. Nut; 54. Elastic pressure head; 6. Pre-clamping assembly; 61. Clamping block; 62. Buckle; 7. Mounting bracket; 71. Slide groove; 72. Stop; 73. High-efficiency calibration tooling; 81. Calibration equipment; 82. Control module; 83. Data acquisition module. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0042] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is solely for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] It should also be noted that, in this document, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terminology used herein is generally that commonly used by those skilled in the art; in case of any discrepancy with commonly used terminology, the terminology used herein shall prevail.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] The present invention will now be described in further detail with reference to the accompanying drawings.

[0047] Figure 1 and Figure 2 A schematic diagram illustrating the overall structure of a high-efficiency calibration fixture according to one embodiment of this utility model is shown. (Refer to...) Figure 1 and Figure 2 As shown, the high-efficiency calibration fixture of this utility model includes a fixture body 1 and a signal connection module 3. The fixture body 1 is provided with several product mounting structures 2. Each product mounting structure 2 is used to stably mount the product to be calibrated (and the components that need to be connected to the product during testing, such as circuit boards) onto the fixture body 1 for testing. The number of product mounting structures 2 can be one or multiple. The product mounting structures 2 can be integrated with the fixture body 1 or designed as separate modular units. When multiple product mounting structures 2 are provided, multiple products can be tested and calibrated simultaneously using only one fixture body 1, thereby effectively accelerating the efficiency of product testing and calibration.

[0048] The signal connection module 3 is used to electrically connect the product installed on the tooling body 1 for testing to the test system for product testing. Each signal connection module 3 corresponds one-to-one with a product mounting structure 2; that is, each product mounting structure 2 has one corresponding signal connection module 3. A single signal connection module 3 includes a test module 32 and an adapter module 31. The test module 32 can be configured as a test board, and the adapter module 31 can be configured as an adapter board. An adapter board is an electronic device used to connect or convert different interfaces or electrical signals. A test board is an auxiliary device for testing electronic equipment, typically used in conjunction with the device under test (DUT) for testing. Its main function is to provide the necessary interfaces and functions to evaluate and verify the performance of the DUT. The structure of the test board and adapter board can be designed according to relevant existing technology specifications, which will not be elaborated here. Through the test module 32 and adapter module 31, the product can be electrically connected to the test system, thereby enabling the test system to control the product or read product data. Specifically, in the signal connection module 3, the first of the test module 32 and the adapter module 31 is set on the fixture body 1, and the second is set on the side of the first away from the fixture body 1, so that the two are stacked in the vertical direction. Compared with the existing design of arranging the test board and the adapter board side by side, it can significantly reduce the area occupied by the installation position of a single product on the fixture, thereby allowing more product installation structures 2 to be set on the fixture body 1.

[0049] For the tooling body 1, in some possible embodiments, the tooling body 1 includes a fixed base 11, a product mounting structure 2, and a signal connection module 3, all of which are mounted on the fixed base 11. It should be noted that in the prior art, the tooling body 1 also includes a product positioning carrier plate for mounting several product mounting structures 2. This arrangement results in a difference in material between the product positioning carrier plate and the tooling body 1, especially in their coefficients of thermal expansion, which can easily lead to momentary vibrations during product aging tests. This invention only includes a fixed base 11, replacing the prior art structure where the product positioning carrier plate and the tooling body 1 are made of the same material, thus ensuring a consistent coefficient of thermal expansion. Furthermore, this design eliminates gaps between the product positioning carrier plate and the tooling body 1, thereby fundamentally preventing momentary vibrations caused by inconsistent coefficients of thermal expansion. This effectively improves the overall stability of the tooling, making it more stable during operation. For example, refer to... Figures 1 to 3 As shown, in Figures 1 to 3 In the illustrated embodiment, the product mounting structure 2 is disposed on the upper surface of the fixed base 11, and the signal connection module 3 is specifically disposed on the lower surface of the fixed base 11 at the corresponding position of the product mounting structure 2, so as to correspond one-to-one with the product mounting structure 2. The adapter plate has screw holes at its four corners, allowing it to be mounted on the tooling body 1 using screws. The test plate also has screw holes at its four corners and is mounted on the side of the adapter plate away from the tooling body 1 using screws. The four screw holes between the test plate and the adapter plate are arranged in four groups, with spacers between each group of screw holes to limit the distance between the test plate and the adapter plate, preventing them from being too close and interfering with each other.

[0050] In some possible implementations, the product mounting structure 2 can be configured as a detachable module, allowing the product mounting structure 2 to be separated from the tooling body 1 (or fixed base 11). This enables better maintenance of relevant parts within the product mounting structure 2, and also allows for the replacement of the product mounting structure 2 with those corresponding to different products, enabling simultaneous testing and calibration of multiple different products. Specifically, the product mounting structure 2 may include a product mounting base 21, and the tooling body 1 may have slots 12 corresponding to the product mounting base 21. The product mounting base 21 has a product mounting slot 22 for mounting the product. The shape of the product mounting slot 22 corresponds to the shape of the product to be tested or the shape of the device to be connected to the product, allowing the product to be better placed within the product mounting slot 22. The product mounting slot 22 also contains a probe module for connecting to the product, enabling electrical connection between the probe module and the product, connecting the product to the signal connection module 3, and connecting to other external modules or systems through the signal connection module 3 to obtain product parameters and data. For example, refer to... Figure 4 and Figure 5 As shown, in Figure 4 and Figure 5 In the illustrated embodiment, the product mounting structure 2 is formed by a product mounting base 21. The product mounting base 21 has screw holes and is detachably mounted and fixed to the slot 12 of the fixing base 11 using screws. A product mounting groove 22 is provided in the center of the product mounting base 21. The product mounting groove 22 is square in shape, matching the shape of a square circuit board containing the product. Protrusions are provided around all four sides of the product mounting groove 22. When the circuit board containing the product is mounted on the product mounting groove 22, the four sides of the circuit board are limited by the protrusions, preventing the product from shaking. Additionally, limit posts can also be provided on the product mounting groove 22. For details, refer to... Figure 4 and Figure 5As shown, two limiting posts are provided, located diagonally opposite each other in the product mounting slot 22. Limiting holes are provided at corresponding positions on the circuit board. When the circuit board is to be mounted in the product mounting slot 22, the limiting posts on the product mounting slot 22 are aligned and inserted into the limiting holes on the circuit board, allowing for proper mounting and positioning of the circuit board. A probe assembly 23 is located at the bottom of the product mounting slot 22. Specifically, the bottom of the product mounting slot 22 and the probe assembly 23 can be installed and removed using screws, facilitating maintenance of the probe assembly 23. Simultaneously, the probe assembly 23 passes through the product mounting slot 22 and connects to the adapter module 31, enabling testing of the circuit board mounted in the product mounting slot 22. Through the above configuration, the probe assembly 23 can be detached from the fixed base 11 together with the product mounting base 21, and the probe assembly 23 can also be detached separately from the product mounting base 21, facilitating maintenance of the probe assembly 23 and the structure of the product mounting slot 22.

[0051] In some possible implementations, a protective plate 4 may also be provided on the tooling body 1 to protect the signal connection module 3. Specifically, the signal connection module 3 may be disposed between the tooling body 1 and the protective plate 4, thereby protecting the signal connection module 3 from damage during storage or installation. The protective plate 4 may be made of conventional metal or plastic, or may be made of other materials with a multi-layered structure; this invention does not limit its application in this regard. For example, refer to... Figure 2 As shown, in Figure 2 In the embodiment shown, the protective plate 4 is disposed at the bottom of the fixed base 11, and a partition column is provided between the two to ensure that the gap between the protective plate 4 and the fixed base 11 is sufficient to install the signal connection module 3.

[0052] In some possible implementations, the tooling body 1 may also be provided with a clamping device 5 to clamp and fix the product mounted on the product mounting structure 2 onto the tooling body 1, preventing the product from detaching from the product mounting structure 2 during testing and calibration, thus avoiding damage to the product or affecting the testing process. Specifically, the clamping device 5 may include a pressure plate 51 disposed on one side of the tooling body 1 where the product mounting structure 2 is located, with a tensioning assembly between the pressure plate 51 and the tooling body 1. The tensioning assembly tensions and clamps the pressure plate 51 onto the product, thereby allowing the product to be stably and smoothly placed on the product mounting structure 2. The tensioning assembly may be implemented using a structure that allows for progressive clamping through graded adjustment or stepless adjustment. For example, refer to... Figure 3 As shown, in Figure 3In the illustrated embodiment, the tensioning assembly includes a guide stud 52 disposed on the side of the fixed base 11 where the product mounting structure 2 is located. The pressure plate 51 has a positioning hole corresponding to the guide stud 52. By simply passing the guide stud 52 through the positioning hole on the pressure plate 51 and tightening it with a nut 53 that matches the guide stud 52, the nut 53 presses against the pressure plate 51, thus allowing the product to be stably and smoothly placed on the product mounting structure 2. Specifically, in... Figure 3 In the illustrated embodiment, four sets of guide studs 52, positioning holes, and nuts 53 are provided and evenly arranged on the fixed base 11, thereby ensuring that the pressure plate 51 can press the product placed at various positions on the fixed base 11. In other embodiments, the tensioning assembly can also be configured as a structure composed of ratchet teeth and racks to achieve step-by-step pressing, or it can be configured as other structures commonly found in the prior art, which will not be listed in detail here.

[0053] For the pressure plate 51, an elastic pressure head 54 can also be provided on the side of the pressure plate 51 facing the product. This allows the pressure head 54 to contact the product, preventing rigid contact between the pressure plate 51 and the product and reducing the risk of the product being damaged by the pressure plate 51. Since the fixed base 11 can have multiple product mounting structures 2, and each product mounting structure 2 has a different location, the location and number of elastic pressure heads 54 on the pressure plate 51 must correspond to the product mounting structures 2. The end of the elastic pressure head 54 that contacts the product is made of a flexible or elastic material, such as rubber. For example, refer to... Figure 3 As shown, in Figure 3 In the embodiment shown, a plurality of elastic pressure heads 54 are provided on the side of the pressure plate 51 facing the product, each corresponding to a position of the product mounting structure 2.

[0054] In addition, in the embodiment described above with the clamping device 5, a pre-clamping component 6 can be added between the pressure plate 51 and the tooling body 1. The pre-clamping component 6 is used to pre-clamp the pressure plate 51 before tensioning it using the tensioning component, ensuring that even when the pressure plate 51 is large, the entire pressure plate 51 can be pressed down, avoiding uneven pressure on the product on the tooling body 1. The pre-clamping component 6 can be implemented using a single-stage clamping structure (i.e., a non-adjustable progressive clamping structure), such as a snap-fit ​​structure 62. For example, see reference... Figure 1 and Figure 3 As shown, in Figure 1 and Figure 3In the illustrated embodiment, the pre-tightening assembly 6 is implemented by including a locking block 61 and a latch 62 disposed on both sides of the fixed base 11 and the pressure plate 51. Specifically, the locking block 61 is fixedly disposed on the side of the fixed base 11 on which the product mounting structure 2 is disposed, and the latch 62 is rotatably disposed on one side of the pressure plate 51. When the pressure plate 51 is pressed down, simply rotating the latch 62 to engage with the locking block 61 achieves pre-tightening of the pressure plate 51. To improve the balance of pre-tightening, at least two sets of the pre-tightening assembly 6 can be arranged along the front and rear of this side, or one set can be arranged on each pair of sides. Figure 2 In the embodiment shown, at least two sets of pre-compression components 6 may be arranged along the side front and back.

[0055] This utility model's high-efficiency calibration fixture, by vertically stacking the test module 32 and the adapter module 31, significantly reduces the area occupied by the mounting position of a single product compared to existing designs that arrange the test board and adapter board side by side. This allows the fixture to accommodate more product mounting structures 2. Compared to existing fixtures that can test a maximum of 10 products at a time, this utility model's fixture can be expanded to test a maximum of 20 products at a time, thus greatly improving the testing efficiency of the fixture during calibration testing.

[0056] Figure 6 The schematic diagram illustrates the principle block diagram of a calibration system according to one embodiment of the present invention, with reference to... Figure 6 As shown, the calibration system of this utility model includes:

[0057] The calibration device 81 is used to test and calibrate the product to be tested. The calibration device 81 is equipped with the high-efficiency calibration fixture described in any of the above embodiments. The high-efficiency calibration fixture is provided with a plurality of product mounting structures 2 for placing the product to be tested.

[0058] The control module 82 is connected to the calibration equipment and is used to control the calibration equipment to perform test calibration on the product to be tested.

[0059] The data acquisition module 83 is connected to the product under test in the calibration equipment and is used to acquire data of the product under test in the calibration equipment.

[0060] The calibration device 81 is a device used for calibrating the product under test. It can vary depending on the product under test and the calibration test to be performed. For example, taking the calibration of an IMU as an example, the calibration device 81 can be a dual-axis turntable with a rotating platform and an angle adjustment device, allowing adjustment of the IMU's position and orientation for calibration testing. The calibration device 81 can also be a temperature chamber, enabling high and low temperature aging tests on the IMU. The calibration device 81 is equipped with a high-efficiency calibration fixture 73 according to any of the above embodiments, and this high-efficiency calibration fixture 73 has multiple product mounting structures 2. It is understood that the calibration device 81 can have multiple high-efficiency calibration fixtures 73, enabling it to simultaneously calibrate and test a large number of products. Specifically, the calibration device 81 can have mounting structures for installing the high-efficiency calibration fixtures 73. For example, referring to… Figure 7 As shown, Figure 7 The calibration device 81 is a dual-axis rotary table. This calibration device 81 includes a mounting frame 7, one side of which has an opening for mounting a high-efficiency calibration fixture 73 into the mounting frame 7. A sliding groove 71 is provided on the inner side of the mounting frame 7, allowing the two sides of the fixed base 11 on the high-efficiency calibration fixture 73 to engage with the sliding groove 71 and slide into the mounting frame 7. Multiple sets of sliding grooves 71 for mounting the high-efficiency calibration fixture 73 are provided vertically within the mounting frame 7, thus accommodating multiple high-efficiency calibration fixtures 73. A stop door 72 is provided on one side of the opening of the mounting frame 7, allowing the high-efficiency calibration fixture 73 to be mounted on the calibration device 81 by closing and locking the stop door 72.

[0061] The control module 82 is used to control the calibration device 81 to perform test calibration on the product under test. The control module 82 is connected to the calibration device 81, thereby enabling the transmission of control signals. For example, refer to... Figure 8 and Figure 9 As shown, the control module 82 can be implemented as including an industrial computer, which is connected to the calibration device 81 to transmit control signals. (Refer to...) Figure 8 As shown, in the embodiment where the calibration device 81 is a dual-axis rotary table, the control module 82 may further include a PLC (Programmable Logic Controller) device, which is connected between the calibration device 81 and the industrial computer. Specific wiring connections can be configured according to the actual connection method of the equipment, and this part will not be described in detail here.

[0062] The data acquisition module 83 is used to acquire data of the product under test in the calibration device 81. The data acquisition module 83 is connected to the product under test in the calibration device 81, thereby enabling the acquisition of data of the product under test. For example, refer to... Figure 8 and Figure 9 As shown, the data acquisition module 83 can be implemented by including a CAN box and an industrial control computer. The number of CAN boxes corresponds to the number of high-efficiency calibration fixtures 73 in the calibration equipment 81, and each CAN box is connected one-to-one with each high-efficiency calibration fixture 73. The industrial control computer is connected to the CAN box and is connected to a 12V programmable power supply, which can power both the industrial control computer and the CAN box. A single CAN box is connected to multiple products under test in the corresponding high-efficiency calibration fixture 73 in the calibration equipment 81 via a ribbon cable adapter. The ribbon cable adapter is connected to the programmable power supply, thereby acquiring the output data of the products under test and comparing it with standard data to evaluate the product performance. The industrial control computer also connects to the company network and servers (such as...) via a network. Figure 8 or Figure 9 It communicates with the data server or MES (Manufacturing Execution System) server in the system, thereby enabling the upload and storage of the output data of the product under test and the comparison results with standard data.

[0063] The calibration system of this invention can simultaneously calibrate and test a large number of products using the aforementioned high-efficiency calibration fixture 73, significantly improving calibration and testing efficiency. The dual-axis rotary table calibration device 81 can accurately simulate the posture and movement of IMU products under different working scenarios, ensuring accurate and reliable test results for the IMU products. Furthermore, due to the high-efficiency calibration fixture 73 on the calibration device 81, the overall calibration system is highly versatile and applicable to testing various models and specifications of IMUs.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A high-efficiency calibration fixture, characterized in that, include: The tooling body has several product mounting structures on it. The signal connection module is mounted on the fixture body and corresponds one-to-one with the product mounting structure. It includes a test module and an adapter module. The first of the test module and the adapter module is mounted on the fixture body, and the second is mounted on the side of the first module away from the fixture body.

2. The high-efficiency calibration fixture according to claim 1, characterized in that, The tooling body includes a fixed base, and the product mounting structure and the signal connection module are both mounted on the fixed base.

3. The high-efficiency calibration fixture according to claim 1, characterized in that, The product mounting structure is detachably mounted on the tooling body, including a product mounting base, a product mounting slot on the product mounting base, and a probe assembly for connecting to the product disposed in the product mounting slot.

4. The high-efficiency calibration fixture according to claim 1, characterized in that, A protective plate is provided on one side of the tooling body where the signal connection module is located, and the signal connection module is located between the tooling body and the protective plate.

5. The high-efficiency calibration fixture according to any one of claims 1 to 4, characterized in that, The tooling body is equipped with a clamping device for fixing the product to the product mounting structure.

6. The high-efficiency calibration fixture according to claim 5, characterized in that, The clamping device includes a pressure plate disposed on one side of the tooling body where the product mounting structure is provided, and a tensioning component is provided between the pressure plate and the tooling body.

7. The high-efficiency calibration fixture according to claim 6, characterized in that, The tensioning assembly includes a guide stud disposed on the tooling body, and the pressure plate is provided with a positioning hole corresponding to the guide stud, and a nut matching the guide stud is disposed on the positioning hole.

8. The high-efficiency calibration fixture according to claim 6, characterized in that, A pre-tightening assembly is also provided between the pressure plate and the tooling body. The pre-tightening assembly includes locking blocks and buckles disposed on both sides of the tooling body.

9. The high-efficiency calibration fixture according to claim 6, characterized in that, The pressure plate is equipped with elastic pressure heads that correspond one-to-one with the installation structure of each product.

10. A calibration system, characterized in that, include: A calibration device is used to test and calibrate a product to be tested. The calibration device is provided with a high-efficiency calibration fixture as described in any one of claims 1 to 9. The high-efficiency calibration fixture is provided with a plurality of product mounting structures for placing the product to be tested. The control module, connected to the calibration equipment, is used to control the calibration equipment to perform test calibration on the product under test; The data acquisition module connects to the product under test in the calibration equipment and is used to acquire data from the product under test in the calibration equipment.

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