Method for assembling and testing three-axis accelerometer combination device

Abstract

The invention provides an assembling and testing method for a triaxial accelerometer combination device, and the method comprises the steps: enabling an external adapter, a circuit-accelerometer converter, an IF conversion circuit board, a temperature control circuit board, a plurality of supporting adapter tables and a cover plate assembly to be installed into a whole in a lamination manner, and forming a signal output structure; mounting a signal output structure on a circuit lamination mounting base of the integrated mounting table body; a balancing device and a shock absorber are installed at the corresponding positions of the integrated installation table body respectively; mounting the triaxial accelerometer at a corresponding position on the triaxial accelerometer orthogonal mounting table; the isolation outer cover and the integrated mounting table body are connected into a whole; the overall structure of the three-axis accelerometer combination device is sealed; the three-axis accelerometer combination device is installed on a system platform or a test rotary table to obtain an acceleration signal and a temperature signal. The three-axis accelerometer combination device can solve the technical problems that a three-axis accelerometer combination device in the prior art is large in size, complex in structure and poor in environmental adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of accelerometer design, and in particular to an assembly and testing method of a three-axis accelerometer assembly device. Background Art

[0002] Quartz flexible accelerometers (hereinafter referred to as accelerometers) are used to measure the linear acceleration of carriers and are widely used in various inertial measurement fields. With the development of inertial navigation systems, accelerometers are required to achieve three-axis linear acceleration measurement in some fields such as satellites and aviation helicopters, and multi-axis accelerometer combination products have emerged. At present, traditional three-axis accelerometer combinations generally have the characteristics of large size, high weight, no shock absorber, and complex internal connection lines. Under the goal of modern inertial equipment to pursue "small, reliable, and accurate", large-volume, high-weight three-axis accelerometer combinations run counter to the goal. The lack of shock absorbers greatly reduces the environmental adaptability of the three-axis accelerometer, and the complex internal lines make maintenance extremely difficult. In general, the characteristics of the traditional accelerometer combination itself have greatly reduced its scope of use. Therefore, a new type of three-axis accelerometer combination implementation device is needed to match the development of modern inertial measurement equipment. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] According to one aspect of the present invention, a method for assembling and testing a triaxial accelerometer assembly device is provided, and the method for assembling and testing the triaxial accelerometer assembly device comprises:

[0005] Step 1: Install the external adapter, the circuit-accelerometer converter, the IF conversion circuit board, the temperature control circuit board, several support transfer tables and the cover assembly into one piece by stacking to form a signal output structure;

[0006] Step 2: Install the signal output structure on the circuit stack mounting base of the integrated mounting platform, install the circuit-accelerometer converter in the converter connection slot on the top surface of the circuit stack mounting base, and place the external adapter in the external adapter connection slot on the side of the circuit stack mounting base;

[0007] Step 3, installing the trimmer and the shock absorber at corresponding positions of the integrated mounting platform respectively;

[0008] Step 4: Install the X, Y, and Z three-axis accelerometers at corresponding positions on the three-axis accelerometer orthogonal mounting platform, and connect the accelerometer power supply and signal terminals to the circuit-accelerometer converter through test cables;

[0009] Step 5, connecting the isolation cover and the integrated mounting platform into one;

[0010] Step 6, sealing the entire structure of the triaxial accelerometer assembly device;

[0011] Step seven, install the three-axis accelerometer assembly on the system platform or test turntable, connect the corresponding test acquisition equipment, turn on the power, apply excitation, the accelerometer obtains acceleration information, the IF conversion circuit realizes signal conversion, the temperature control circuit realizes temperature control in the structure, and obtains acceleration signal and temperature signal.

[0012] Furthermore, step one specifically includes: fixing four fixed truncated tables on the cover plate of the cover plate assembly, fixing the temperature control circuit board on the four fixed truncated tables through four supporting adapters evenly distributed along the circumference, stacking the IF conversion circuit board on top of the temperature control circuit board through four supporting adapters evenly distributed along the circumference, connecting the temperature control circuit board and the IF conversion circuit board to the circuit-accelerometer converter respectively, and connecting the temperature control circuit board and the IF conversion circuit board to the external adapter respectively.

[0013] Furthermore, in step 2, the cover plate is fixed to the circuit stack mounting base of the integrated mounting platform, and the cover plate encloses the circuit-accelerometer converter, IF conversion circuit board, temperature control circuit board and several supporting transfer platforms in the circuit accommodating cavity of the circuit stack mounting base.

[0014] Furthermore, in step 2, the external adapter connection groove is arranged above the fixing block of the cover plate assembly, and the fixing block serves as a support and support for the external adapter.

[0015] Furthermore, in step three, the balancer is mounted on the top surface of the circuit stack mounting base, and the shock absorber is mounted on the side surface of the orthogonal mounting platform of the triaxial accelerometer.

[0016] Furthermore, in step 4, the X, Y and Z three-axis accelerometers are arranged orthogonally in pairs on the three-axis accelerometer orthogonal mounting platform.

[0017] Furthermore, in step five, the isolation cover is connected to the circuit stack mounting base, and the triaxial accelerometer and the triaxial accelerometer orthogonal mounting platform are placed in the accommodating cavity of the isolation cover.

[0018] Furthermore, in step six, the sealing treatment of the overall structure of the three-axis accelerometer assembly device is performed by bonding or welding.

[0019] According to another aspect of the present invention, a three-axis accelerometer assembly device is provided. The three-axis accelerometer assembly device is assembled and tested using the assembly and testing method of the three-axis accelerometer assembly device described above.

[0020] Furthermore, the three-axis accelerometer assembly device includes: an external adapter, a circuit-accelerometer converter, an IF conversion circuit board, a temperature control circuit board, a plurality of support adapters, a cover assembly, an integrated mounting platform, a three-axis accelerometer and an isolation cover, wherein the external adapter is respectively connected to the IF conversion circuit board, the temperature control circuit board and the external circuit, and is used to transmit the internal signal to the external circuit; the circuit-accelerometer converter is respectively connected to the three-axis accelerometer and the IF conversion circuit board and the temperature control circuit board; the integrated mounting platform includes an orthogonal mounting platform for the three-axis accelerometer and a circuit stacking mounting base stacked up and down, as well as a shock absorber and a balancer, and the three-axis accelerometer is orthogonal. The cross mounting platform has three accelerometer mounting grooves which are arranged orthogonally in pairs, and the accelerometer mounting grooves are used to install the accelerometers; the circuit stacking mounting base supports the setting of the three-axis accelerometer orthogonal mounting platform, and has a circuit accommodating cavity for installing an IF conversion circuit board and a temperature control circuit board; the shock absorber is located on the side of the three-axis accelerometer orthogonal mounting platform; the balancer is located on the top surface of the circuit stacking mounting base; the isolation cover is connected to the circuit stacking mounting base, the isolation cover has an accommodating cavity, and the three-axis accelerometer and the three-axis accelerometer orthogonal mounting platform are located in the accommodating cavity of the isolation cover; the IF conversion circuit board and the temperature control circuit board are stacked on the cover assembly through a number of supporting transfer platforms.

[0021] By applying the technical solution of the present invention, a method for assembling and testing a three-axis accelerometer assembly is provided. The method for assembling and testing a three-axis accelerometer assembly is used to integrally install a three-axis accelerometer, a circuit board assembly, a circuit-accelerometer converter, and an external adapter through an integrated mounting platform. The three-axis accelerometer assembly assembled by the present invention has high component integration, small size, light weight, strong environmental adaptability, simple internal circuit connection, etc., and can effectively adapt to the development of modern inertial measurement equipment. Compared with the prior art, the technical solution of the present invention can solve the technical problems of the three-axis accelerometer assembly in the prior art, such as large size, complex structure, and poor environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A cross-sectional view of a triaxial accelerometer assembly device provided according to a specific embodiment of the present invention is shown;

[0024] Figure 2 A top view of the internal structure of a three-axis accelerometer assembly device provided according to a specific embodiment of the present invention is shown;

[0025] Figure 3 A working principle diagram of a three-axis accelerometer assembly device provided according to a specific embodiment of the present invention is shown;

[0026] Figure 4 The overall structural diagram of the three-axis accelerometer assembly device provided according to a specific embodiment of the present invention is shown;

[0027] Figure 5 A cross-sectional view of an integrated mounting platform provided according to a specific embodiment of the present invention is shown;

[0028] Figure 6 A top view of an integrated mounting platform provided according to a specific embodiment of the present invention is shown;

[0029] Figure 7 A schematic structural diagram of a cover plate assembly provided according to a specific embodiment of the present invention is shown;

[0030] Figure 8 A schematic diagram showing the connection between a circuit board assembly and a cover assembly provided according to a specific embodiment of the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 1. Isolation cover; 2. Integrated mounting platform; 21. Orthogonal mounting platform for three-axis accelerometer; 22. Circuit stack mounting base; 23. Shock absorber; 24. Balancer; 3. Three-axis accelerometer; 4. External adapter; 5. Circuit-accelerometer converter; 6. Cover assembly; 61. Cover; 62. Fixed round table; 63. Fixed block; 7. Temperature control circuit board; 8. IF conversion circuit board; 9. Support adapter. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] According to a specific embodiment of the present invention, a method for assembling and testing a triaxial accelerometer assembly device is provided. The method for assembling and testing a triaxial accelerometer assembly device comprises:

[0037] Step 1: The external adapter 4, the circuit-accelerometer converter 5, the IF conversion circuit board 8, the temperature control circuit board 7, a plurality of support transfer tables 9 and the cover assembly 6 are installed as a whole in a stacked form to form a signal output structure;

[0038] Step 2: Install the signal output structure on the circuit stack mounting base 22 of the integrated mounting platform 2, install the circuit-accelerometer converter 5 in the converter connection groove on the top surface of the circuit stack mounting base 22, and place the external adapter 4 in the external adapter connection groove on the side of the circuit stack mounting base 22;

[0039] Step 3, install the balancer 24 and the shock absorber 23 at corresponding positions of the integrated mounting platform 2 respectively;

[0040] Step 4: Install the X, Y, and Z three-axis accelerometers at corresponding positions on the three-axis accelerometer orthogonal mounting platform 21, and connect the accelerometer power supply and signal terminals to the circuit-accelerometer converter 5 through a test cable;

[0041] Step 5, connecting the isolation cover 1 and the integrated mounting platform 2 into one;

[0042] Step six, sealing the entire structure of the triaxial accelerometer assembly device;

[0043] Step seven, install the three-axis accelerometer assembly on the system platform or test turntable, connect the corresponding test acquisition equipment, turn on the power, apply excitation, the accelerometer obtains acceleration information, the IF conversion circuit realizes signal conversion, the temperature control circuit realizes temperature control in the structure, and obtains acceleration signal and temperature signal.

[0044] By applying this configuration, an assembly and testing method for a three-axis accelerometer assembly device is provided. The assembly and testing method for the three-axis accelerometer assembly device integrally installs a three-axis accelerometer, a circuit board assembly, a circuit-accelerometer converter and an external adapter through an integrated mounting platform. The three-axis accelerometer assembly device assembled by the present invention has high component integration, small size, light weight, strong environmental adaptability, simple internal circuit connection and the like, and can effectively adapt to the development of modern inertial measurement equipment.

[0045] Furthermore, in the present invention, step one specifically includes: fixing four fixed truncated tables on the cover plate of the cover plate assembly, fixing the temperature control circuit board on the four fixed truncated tables through four supporting adapters evenly distributed along the circumference, stacking the IF conversion circuit board on top of the temperature control circuit board through four supporting adapters evenly distributed along the circumference, connecting the temperature control circuit board and the IF conversion circuit board to the circuit-accelerometer converter respectively, and connecting the temperature control circuit board and the IF conversion circuit board to the external adapter respectively.

[0046] In step 2, the cover plate is fixed to the circuit stack mounting base of the integrated mounting platform, and the cover plate encloses the circuit-accelerometer converter, IF conversion circuit board, temperature control circuit board and several supporting transfer platforms in the circuit accommodating cavity of the circuit stack mounting base.

[0047] In step 2, the external adapter connection groove is arranged above the fixing block of the cover plate assembly, and the fixing block serves as a support and support for the external adapter.

[0048] In step three, the balancer is mounted on the top surface of the circuit stack mounting base, and the shock absorber is mounted on the side of the orthogonal mounting platform of the triaxial accelerometer.

[0049] In step 4, the X, Y and Z three-axis accelerometers are arranged orthogonally in pairs on the three-axis accelerometer orthogonal mounting table.

[0050] In step five, the isolation cover is connected to the circuit stack mounting base, and the triaxial accelerometer and the triaxial accelerometer orthogonal mounting platform are placed in the accommodating cavity of the isolation cover.

[0051] In step six, the sealing treatment of the overall structure of the triaxial accelerometer assembly device is carried out by bonding or welding.

[0052] As a specific embodiment of the present invention, the components of the signal output structure are integrally mounted by fastening screws. The gap between the cover plate 61 and the circuit stack mounting base 22 can be sealed by gluing. The accelerometer power supply and signal terminals are connected to the circuit-accelerometer converter 5 by welding through the test cable. The isolation cover 1 and the integrated mounting platform 2 are connected by bonding or laser welding. The sealing treatment of the overall structure of the triaxial accelerometer assembly device can be treated by bonding or welding.

[0053] According to another aspect of the present invention, Figures 1 to 8 As shown, a three-axis accelerometer assembly device is provided, which includes: a three-axis accelerometer 3, a circuit board assembly, an integrated mounting platform 2, a circuit-accelerometer converter 5 and an external adapter 4, the circuit board assembly is used to realize the control, conversion and processing of the internal signal of the three-axis accelerometer assembly device; the integrated mounting platform 2 includes a three-axis accelerometer orthogonal mounting platform 21 and a circuit stacking mounting base 22 stacked up and down, the three-axis accelerometer orthogonal mounting platform 21 has three accelerometer mounting grooves arranged orthogonally in pairs, and the accelerometer mounting grooves are used to install the accelerometer; the circuit stacking mounting base 22 supports the three-axis accelerometer orthogonal mounting platform 21 and has a circuit accommodating cavity for installing the circuit board assembly; the circuit-accelerometer converter 5 is respectively connected to the three-axis accelerometer 3 and the circuit board assembly for transmitting the internal signal to the circuit board assembly; the external adapter 4 is respectively connected to the circuit board assembly and the external circuit for transmitting the internal signal to the external circuit.

[0054] As a specific embodiment of the present invention, the integrated mounting platform 2 is the main structure of the entire three-axis accelerometer assembly device. The integrated mounting platform 2 can be made of a material with good temperature stability and high strength, such as titanium alloy TC4, and adopts a light weight structure while ensuring high strength.

[0055] In addition, an integrated mounting platform 2 can be provided with the bottom surface as a reference to ensure flatness, and verticality between the side surface and the bottom surface is ensured, the bottom surface includes the mounting reference, and the side surface is the device mounting surface.

[0056] Furthermore, in the present invention, the configurable circuit board assembly includes an IF conversion circuit board 8 and a temperature control circuit board 7. The IF conversion circuit board 8 and the temperature control circuit board 7 are stacked up and down in the circuit accommodating cavity, and are respectively connected to the three-axis accelerometer 3 through the circuit-accelerometer converter 5. The IF conversion circuit board 8 is used to convert the accelerometer analog signal into a digital signal and output it; the temperature control circuit board 7 is used to control the internal temperature of the three-axis accelerometer combination device and output a temperature signal.

[0057] As a specific embodiment of the present invention, the configurable circuit-accelerometer converter 5 is a matching type, which is divided into two parts: a male head and a female head. The male head is mainly used to realize line connection with the three-axis accelerometer 3, and the female head is mainly connected to the circuit board, which is responsible for transmitting the acceleration signal and the temperature signal to the IF conversion circuit and the temperature control circuit.

[0058] In addition, an external adapter 4 can also be configured as a matching type, which is divided into two parts, a male head and a female head. The male head mainly provides external terminals to transmit internal signals to the external circuit, and the female head is mainly connected to the circuit board and is responsible for transmitting acceleration signals and temperature signals.

[0059] Furthermore, in order to facilitate the installation of the circuit-accelerometer converter 5 and the external adapter 4, the top surface of the circuit stack mounting base 22 can be configured to have a converter connection groove, and the side surface can have an external adapter connection groove, the circuit-accelerometer converter 5 is located in the converter connection groove, and the external adapter 4 is located in the external adapter connection groove. By setting the converter connection groove and the external adapter connection groove, the electrical connection of each component can be realized and simplified in the limited space of the three-axis accelerometer assembly device, thereby further reducing the volume of the three-axis accelerometer assembly device.

[0060] In the present invention, the position of the converter connection slot should ensure that the position of the circuit-accelerometer converter 5 does not interfere with the X-axis accelerometer to avoid affecting the accuracy of the acceleration data.

[0061] Furthermore, in order to improve the adaptability of the triaxial accelerometer assembly in a vibration environment, the integrated mounting platform 2 may further include a shock absorber 23, which is located on the side of the triaxial accelerometer orthogonal mounting platform 21. The shock absorber can provide a shock absorbing and buffering effect on the triaxial accelerometer orthogonal mounting platform 21.

[0062] In the present invention, the specific position of the shock absorber can be adjusted to match the positions of the triaxial accelerometer 3, the triaxial accelerometer orthogonal mounting platform 21, and other components. As a specific embodiment of the present invention, the number of shock absorbers that can be configured is multiple, such as Figure 6 As shown, there are two shock absorbers 23 , which are respectively located on two sides of the orthogonal mounting platform 21 of the three-axis accelerometer.

[0063] Furthermore, in order to improve the stability of the triaxial accelerometer assembly, the integrated mounting platform 2 may further include a balancer 24, which is located on the top surface of the circuit stack mounting base 22 and is used to balance the triaxial accelerometer assembly. In the present invention, the environmental adaptability of the triaxial accelerometer assembly can be further improved by the vibration damper and the balancer 24.

[0064] Furthermore, in order to provide a stable testing environment for the triaxial accelerometer 3, the triaxial accelerometer assembly device can be configured to also include an isolation cover 1, which is connected to the circuit stack mounting base 22, and the isolation cover 1 has a accommodating cavity, and the triaxial accelerometer 3 and the triaxial accelerometer orthogonal mounting platform 21 are located in the accommodating cavity of the isolation cover 1.

[0065] As a specific embodiment of the present invention, the isolation cover 1 can be made of a material with good thermal conductivity, for example, copper. In the present invention, the plane size of the connection end between the isolation cover 1 and the circuit stack mounting base 22 can be set to be smaller than the plane size of the circuit stack mounting base 22 to avoid affecting the positioning accuracy. In addition, there is no mutual interference between the positional relationship between the X, Y and Z accelerometers and the isolation cover 1.

[0066] Furthermore, in order to protect the circuit board assembly and provide a stable internal environment for the circuit board assembly, the triaxial accelerometer assembly device may be configured to further include a cover assembly 6, which includes a cover 61, which is located at the opening of the circuit accommodating cavity of the circuit stack mounting base 22, and is used to close the circuit accommodating cavity. By isolating the outer cover 1 and the cover 61, the overall structure of the acceleration assembly device is in a sealed state, so as to provide a stable internal environment for the circuit board assembly.

[0067] As a specific embodiment of the present invention, the cover plate 61 can be made of a material with good thermal conductivity and high strength. For example, it can be made of copper alloy. The plane size of the cover plate 61 should be smaller than the plane size of the circuit stack mounting base 22 to avoid affecting the positioning accuracy.

[0068] Furthermore, in order to facilitate the fixed installation of the circuit board assembly in the circuit accommodating cavity, the cover plate assembly 6 may be configured to further include a plurality of fixed truncated platforms 62, which are placed on the side of the cover plate 61 facing the circuit accommodating cavity, and the triaxial accelerometer assembly device may further include a plurality of supporting transfer platforms 9, on which the IF conversion circuit board 8 and the temperature control circuit board 7 are stacked through the plurality of supporting transfer platforms 9. The fixed truncated platforms 62 and the supporting transfer platforms 9 may provide a certain gap between the mounting platform body-IF conversion circuit-temperature control circuit, thereby ensuring that the circuit components have a certain placement space.

[0069] As a specific embodiment of the present invention, the number and position of the fixed truncated platform 62 and the support transfer platform 9 can be set according to the actual support needs. Figure 8 As shown, the configurable temperature control circuit board 7 is fixed on four fixed circumferential tables 62 through four supporting transfer tables 9 evenly distributed along the circumference, and the IF conversion circuit board 8 is stacked on the temperature control circuit board 7 through four supporting transfer tables 9 evenly distributed along the circumference.

[0070] In the present invention, the circuit accommodating cavity of the circuit stack mounting base 22 should have enough space to accommodate the mounting circuit board assembly. Figure 1 As shown, in this embodiment, the height of the circuit stack mounting base 22 should be higher than the sum of the heights of the cover plate 61 , the fixed truncated table 62 , the temperature control circuit board 7 , the IF conversion circuit board 8 and the two supporting transfer tables 9 .

[0071] In the present invention, the support transfer platform 9 can be made of insulating materials or adopt insulating measures, such as aluminum alloy anodizing process, to meet the insulation requirements. The support transfer platform 9 can be set to a cylindrical shape and used in conjunction with the fixed truncated platform 62.

[0072] Furthermore, in order to facilitate the installation and fixation of the external adapter 4, the cover plate assembly 6 may be configured to further include a fixing block 63, which is located on the side of the circuit stack mounting base 22 and connected to the cover plate 61. The side of the circuit stack mounting base 22 has an external adapter connection groove, which is opened above the fixing block 63. The fixing block 63 plays a role of leaning against and supporting the external adapter 4. In the present invention, the size of the fixing block 63 matches that of the external adapter connection groove.

[0073] The three-axis accelerometer assembly device of the present invention has the characteristics of small size, light weight, strong environmental adaptability, simple internal circuit connection, etc., and can effectively adapt to the development of modern inertial measurement equipment.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembly test method for a triaxial accelerometer assembly device, characterized in that: The assembly and testing method of the triaxial accelerometer assembly device comprises: Step 1: Install the external adapter, the circuit-accelerometer converter, the IF conversion circuit board, the temperature control circuit board, several support transfer tables and the cover assembly into one piece by stacking to form a signal output structure; Step 2: Install the signal output structure on the circuit stack mounting base of the integrated mounting platform, install the circuit-accelerometer converter in the converter connection groove on the top surface of the circuit stack mounting base, and place the external adapter in the external adapter connection groove on the side of the circuit stack mounting base; Step 3, installing the trimmer and the shock absorber at corresponding positions of the integrated mounting platform respectively; Step 4: Install the X, Y, and Z three-axis accelerometers on the corresponding positions of the three-axis accelerometer orthogonal mounting platform of the integrated mounting platform, and connect the accelerometer power supply and signal terminals to the circuit-accelerometer converter through the test cable; Step 5, connecting the isolation cover and the integrated mounting platform into one; Step six, sealing the entire structure of the triaxial accelerometer assembly device; Step seven, install the three-axis accelerometer assembly on the system platform or test turntable, connect the corresponding test acquisition equipment, turn on the power, apply excitation, the accelerometer obtains acceleration information, the IF conversion circuit realizes signal conversion, the temperature control circuit realizes temperature control in the structure, and obtains acceleration signal and temperature signal.

2. The assembly and testing method of the triaxial accelerometer assembly device according to claim 1, characterized in that: Step one specifically includes: fixing four fixed truncated tables on the cover plate of the cover plate assembly, fixing the temperature control circuit board on the four fixed truncated tables through four supporting transfer tables evenly distributed along the circumference, stacking the IF conversion circuit board on top of the temperature control circuit board through four supporting transfer tables evenly distributed along the circumference, connecting the temperature control circuit board and the IF conversion circuit board to the circuit-accelerometer converter respectively, and connecting the temperature control circuit board and the IF conversion circuit board to the external adapter respectively.

3. The assembly and testing method of the triaxial accelerometer assembly device according to claim 2, characterized in that: In step 2, the cover plate is fixed to the circuit stack mounting base of the integrated mounting platform, and the cover plate encloses the circuit-accelerometer converter, IF conversion circuit board, temperature control circuit board and several supporting transfer platforms in the circuit accommodating cavity of the circuit stack mounting base.

4. The assembly and testing method of the triaxial accelerometer assembly according to any one of claims 1 to 3, characterized in that: In step 2, the external adapter connection groove is arranged above the fixing block of the cover plate assembly, and the fixing block serves as a support and support for the external adapter.

5. The assembly and testing method of the triaxial accelerometer assembly device according to claim 1, characterized in that: In step three, the balancer is mounted on the top surface of the circuit stack mounting base, and the shock absorber is mounted on the side of the orthogonal mounting platform of the triaxial accelerometer.

6. The assembly and testing method of the triaxial accelerometer assembly device according to claim 1, characterized in that: In step 4, the X, Y and Z three-axis accelerometers are arranged orthogonally in pairs on the three-axis accelerometer orthogonal mounting table.

7. The assembly and testing method of the triaxial accelerometer assembly device according to claim 1, characterized in that: In step five, the isolation cover is connected to the circuit stack mounting base, and the triaxial accelerometer and the triaxial accelerometer orthogonal mounting platform are placed in the accommodating cavity of the isolation cover.

8. The assembly and testing method of the triaxial accelerometer assembly according to any one of claims 1 to 7, characterized in that: In step six, the sealing treatment of the overall structure of the triaxial accelerometer assembly device is carried out by bonding or welding.

9. A three-axis accelerometer assembly device, characterized in that: The three-axis accelerometer assembly device is assembled and tested using the assembly and testing method for a three-axis accelerometer assembly device according to any one of claims 1 to 8.

10. The three-axis accelerometer assembly according to claim 9, characterized in that: The triaxial accelerometer assembly device comprises: an external adapter, a circuit-accelerometer converter, an IF conversion circuit board, a temperature control circuit board, a plurality of support adapters, a cover assembly, an integrated mounting platform, a triaxial accelerometer and an isolation cover. The external adapter is respectively connected to the IF conversion circuit board, the temperature control circuit board and the external circuit, and is used to transmit the internal signal to the external circuit; The circuit-accelerometer converter is connected to the three-axis accelerometer and the IF conversion circuit board and the temperature control circuit board respectively; The integrated mounting platform body comprises a three-axis accelerometer orthogonal mounting platform and a circuit stacking mounting base stacked up and down, as well as a shock absorber and a balancer. The three-axis accelerometer orthogonal mounting platform has three accelerometer mounting slots arranged orthogonally in pairs, and the accelerometer mounting slots are used to install accelerometers; the circuit stacking mounting base supports the three-axis accelerometer orthogonal mounting platform and has a circuit accommodating cavity for installing the IF conversion circuit board and the temperature control circuit board; the shock absorber is located on the side of the three-axis accelerometer orthogonal mounting platform; the balancer is located on the top surface of the circuit stacking mounting base; The isolation cover is connected to the circuit stack mounting base, the isolation cover has a receiving cavity, and the triaxial accelerometer and the triaxial accelerometer orthogonal mounting platform are located in the receiving cavity of the isolation cover; The IF conversion circuit board and the temperature control circuit board are stacked on the cover plate assembly through a plurality of supporting transfer platforms.

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