Force balance accelerometer based on Beidou time service

Abstract

The utility model discloses a force balance accelerometer based on Beidou time service, which belongs to the technical field of accelerometers and comprises a main body provided with a support column extending in the height direction. The two fixed pole piece assemblies are respectively connected with the supporting column, the two fixed pole piece assemblies are arranged at intervals in the height direction, and at least one fixed pole piece assembly can selectively move relative to the supporting column in the height direction; one end of the adjusting assembly is movably connected with the supporting column; the movable pole piece assembly is connected with the other end of the adjusting assembly, and the movable pole piece assembly is arranged between the two fixed pole piece assemblies. According to the force balance accelerometer based on Beidou time service designed by the utility model, the magnetic field intensity is adjusted by adjusting the distance between the two fixed pole piece assemblies, so that the induction efficiency is adjusted, and the force balance accelerometer can be applied to situations with a wider acceleration range and a narrower acceleration range; and the application range of the force balance accelerometer is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of accelerometers, and particularly relates to a force balance accelerometer based on Beidou time service. Background Art

[0002] In related technologies, capacitive accelerometers usually measure acceleration based on capacitance changes. The core components of such accelerometers include a moving pole piece (moving electrode) and a fixed pole piece (fixed electrode). When acceleration acts on the accelerometer, the moving pole piece will displace, resulting in a change in the capacitance between it and the fixed pole piece. By detecting this capacitance change, the magnitude of the acceleration can be deduced.

[0003] In the prior art, capacitive accelerometers often can only be applied in a relatively narrow acceleration range, or capacitive accelerometers often can only be applied in a relatively wide acceleration range, that is, different capacitive accelerometers need to be used in different scenarios, and the applicability of capacitive accelerometers is low. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to propose a force balance accelerometer based on Beidou time service. According to the force balance accelerometer based on Beidou time service designed by the utility model, by adjusting the distance between two fixed pole piece assemblies, the magnetic field strength is adjusted, so as to adjust the induction efficiency, enabling the force balance accelerometer of the present application to be applicable to scenarios with a relatively wide acceleration range and a relatively narrow acceleration range, and improving the applicable range of the force balance accelerometer.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] The utility model provides a force balance accelerometer based on Beidou time service, including: a main body, the main body is provided with a support column extending in the height direction; fixed pole piece assemblies, there are two fixed pole piece assemblies, the two fixed pole piece assemblies are respectively connected to the support column, and the two fixed pole piece assemblies are spaced apart in the height direction, and at least one fixed pole piece assembly can selectively move relative to the support column in the height direction; an adjustment assembly, one end of the adjustment assembly is movably connected to the support column, and the adjustment assembly can selectively move in the height direction; a moving pole piece assembly, the moving pole piece assembly is connected to the other end of the adjustment assembly, and the moving pole piece assembly is arranged between the two fixed pole piece assemblies; a sensor is arranged on one side of the moving pole piece assembly, and the sensor is used to collect the working conditions of the moving pole piece assembly; a controller, the controller is placed in the main body, the controller is used to access the Beidou server, the controller is signal-connected to the sensor, and the sensor transmits the collected working condition data of the pole piece assembly to the controller, and the controller records the working condition data and the acquisition time.

[0007] According to the force balance accelerometer based on Beidou timing of the utility model, by allowing at least one fixed pole piece assembly to selectively move in the height direction relative to the support column to adjust the distance between the two fixed pole piece assemblies, thereby adjusting the magnetic field strength, and then adjusting the induction efficiency, the force balance accelerometer of the present application can be applied to scenarios with a wide acceleration range and a narrow acceleration range, thereby improving the application scope of the force balance accelerometer. At the same time, the adjustment assembly moves in the height direction to adjust the position of the moving pole piece assembly to avoid the moving pole piece assembly colliding with the fixed pole piece assembly when moving in the height direction.

[0008] Furthermore, the adjustment assembly includes: an adjustment slider, which is movably mounted on the outer periphery of the support column; and an elastic member, one end of which is connected to the adjustment slider and the other end of which is connected to the moving pole piece assembly.

[0009] Furthermore, the outer peripheral wall of the support column is provided with a first external thread, and the adjusting slider is provided with a first threaded hole, and the first threaded hole is threadably matched with the first external thread.

[0010] Furthermore, the adjusting slider is provided with a first sliding groove extending in the circumferential direction, and a first slider is provided at one end of the elastic member, and the first slider is movably provided in the first sliding groove.

[0011] Furthermore, the support column is provided with a second slide groove extending in the height direction, and the fixed pole piece assembly is provided with a second slider, and the second slider is movably arranged in the second slide groove.

[0012] Further, the second slide groove penetrates the support column in the radial direction, the cross-section of the second slider is circular, and the outer peripheral wall of the second slider is provided with a second external thread; wherein the force balance accelerometer also includes: a fastening nut, the fastening nut is located on the side of the support column away from the fixed pole piece assembly, and the fastening nut is threadably matched with the second external thread.

[0013] Furthermore, the fixed pole piece assembly includes a plurality of fixed pole pieces, and the plurality of fixed pole pieces are stacked in a height direction.

[0014] Furthermore, the connecting piece of the fixed pole piece is trapezoidal or elliptical.

[0015] Other advantages, objectives and features of the utility model will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the following drawings are provided for the description of the present utility model:

[0017] Figure 1 Front view of the force balance accelerometer of the present utility model;

[0018] Figure 2 Structural schematic diagram of the support column of the present utility model;

[0019] Figure 3 Schematic diagram of the cooperation between the support column and the adjustment slider of the present utility model.

[0020] The markings in the drawings are as follows:

[0021] 1. Force balance accelerometer;

[0022] 10. Main body; 11. Support column; 111. First external thread; 112. Second chute; 113. Stop surface;

[0023] 20. Fixed pole piece assembly;

[0024] 31. Adjustment slider; 311. First chute; 32. Elastic member;

[0025] 40. Moving pole piece assembly. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and shall not be construed as a limitation of the present utility model.

[0027] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that the present utility model does not have to be implemented with these specific details. In other instances, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the present utility model.

[0028] Throughout the specification, references to "an embodiment", "embodiments", "an example" or "examples" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention. Thus, the phrases "an embodiment", "embodiments", "an example" or "examples" that appear throughout the specification do not necessarily all refer to the same embodiment or example. Additionally, the particular features, structures, or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. Furthermore, those of ordinary skill in the art should understand that the diagrams provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention.

[0030] Embodiment 1:

[0031] As Figures 1 - 3 shown, the present invention provides a force balance accelerometer 1 based on Beidou time service, including: a main body 10, a fixed pole piece assembly 20, an adjustment assembly, and a moving pole piece assembly 40. The main body 10 is provided with a support column 11 extending in the height direction. There are two fixed pole piece assemblies 20, and the two fixed pole piece assemblies 20 are respectively connected to the support column 11, and the two fixed pole piece assemblies 20 are spaced apart in the height direction. At least one fixed pole piece assembly 20 can be selectively moved relative to the support column 11 in the height direction. One end of the adjustment assembly is movably connected to the support column 11, and the adjustment assembly can be selectively moved in the height direction. The moving pole piece assembly 40 is connected to the other end of the adjustment assembly, and the moving pole piece assembly 40 is disposed between the two fixed pole piece assemblies 20.

[0032] A sensor is provided on one side of the moving pole piece assembly 40, and the sensor is used to collect the working conditions of the moving pole piece assembly 40; a controller is placed in the main body. The controller is used to access the Beidou server, and the controller is signal-connected to the sensor. The sensor transmits the working condition data of the pole piece assembly 40 collected to the controller, and the controller records the working condition data and the collection time.

[0033] For reference, the controller is an existing controller with a built-in Beidou time service module. The controller obtains the device coordinates and time through the Beidou service. When necessary, the controller controls the communication module, and the communication module is externally connected to the network to achieve remote data transfer / interaction. The network can be an existing local area network or Ethernet.

[0034] Thus, the controller can accurately record the time of each data acquisition, ensure the accuracy of the data, contribute to subsequent data analysis, improve the reliability and effectiveness of the data. At the same time, by accessing the Beidou server, remote monitoring and data transmission can be achieved, and the remote monitoring center can obtain the working status of the force balance accelerometer 1 in real time, facilitating the management and maintenance of the force balance accelerometer 1.

[0035] In some embodiments, support columns 11 are provided on the main body 10. The number of support columns 11 can be 1, 2, 3, 4 or more, without limitation here. When the number of support columns 11 is two, the two support columns 11 are spaced apart and arranged at the top of the main body 10. The two ends of the fixed pole piece assembly 20 are respectively connected to the support columns 11, and the two fixed pole piece assemblies 20 are spaced apart in the height direction. The support columns 11 are movably connected to an adjustment assembly, and the adjustment assembly is connected to the moving pole piece assembly 40.

[0036] It can be understood that the main body 10 is an integral structure. The main body 10 serves as the basic support for all components to provide necessary structural support and positioning. The support columns 11 extend in the height direction and are used to fix the fixed pole piece assembly 20 and the adjustment assembly. The support columns 11 provide a stable mechanical framework for the entire system and ensure the relative positions of the various components. One of the fixed pole piece assemblies 20 or both fixed pole piece assemblies 20 can move relative to the support columns 11 in the height direction to adjust the distance from the moving pole piece assembly 40.

[0037] One end of the adjustment assembly is movably connected to the support column 11. The adjustment assembly can move relative to the support column 11 in the height direction to adjust the position of the moving pole piece assembly 40. The moving pole piece assembly 40 is connected to the other end of the adjustment assembly, and the moving pole piece assembly 40 moves with the movement of the adjustment assembly to form a capacitor with the fixed pole piece assembly 20 for detecting acceleration.

[0038] It should be noted that the force balance accelerometer 1 further includes a coil and a neodymium iron boron permanent magnet. The neodymium iron boron permanent magnet is located below the moving pole piece assembly 40 and is configured as a ring to provide an annular magnetic gap. The coil is disposed in the annular magnetic gap, and the coil is connected to the moving pole piece assembly 40 and is located below the moving pole piece assembly 40.

[0039] When there is no external acceleration, the distance between the moving pole piece assembly 40 and the fixed pole piece assembly 20 is fixed, forming a certain initial capacitance value. At this time, the system is in a balanced state.

[0040] When acceleration acts on the system, the moving pole piece assembly 40 will be displaced under the action of force. This displacement will cause the distance between the moving pole piece assembly 40 and the fixed pole piece assembly 20 to change, thereby causing a change in the capacitance value. At this time, in order to restore the moving pole piece assembly 40 to its initial position (i.e., achieve force balance), an electromagnetic force will be generated by the coil. The electromagnetic force is equal in magnitude but opposite in direction to the force generated by the acceleration. By detecting the magnitude of the current applied to the coil, the magnitude of the original acceleration can be calculated.

[0041] When the distance between the moving pole piece assembly 40 and the fixed pole piece assembly 20 returns to the initial state, the system is in a balanced state again.

[0042] It is worth mentioning that the distance between the two fixed pole piece assemblies 20 will affect the magnetic field strength, that is, reducing the distance between the two moving pole piece assemblies 40 can enhance the magnetic field strength, thereby achieving improved induction efficiency. At this time, the force balance accelerometer 1 can be applied to scenarios with a relatively narrow acceleration range; conversely, increasing the distance between the two moving pole piece assemblies 40 can reduce the magnetic field strength, thereby achieving reduced induction efficiency. At this time, the force balance accelerometer 1 can be applied to scenarios with a relatively wide acceleration range. Thus, the force balance accelerometer 1 of the present application can adjust the magnetic field strength by adjusting the distance between the two fixed pole piece assemblies 20, thereby achieving the adjustment of induction efficiency, enabling the force balance accelerometer 1 to be used in both environments with a relatively wide acceleration range and a relatively narrow acceleration range, improving the applicable range of the force balance accelerometer 1.

[0043] Of course, by adjusting the position of the moving pole piece assembly 40 by moving the adjustment component in the height direction, the moving pole piece assembly 40 can be adjusted to the position of the balanced state, avoiding the moving pole piece assembly 40 from colliding with the fixed pole piece assembly 20 when it is affected by acceleration and moves in the height direction.

[0044] According to the force balance accelerometer 1 based on Beidou time service of the present utility model, by making at least one fixed pole piece assembly 20 selectively move relative to the support column 11 in the height direction to achieve the adjustment of the distance between the two fixed pole piece assemblies 20, thereby achieving the adjustment of the magnetic field strength, and further achieving the adjustment of induction efficiency, enabling the force balance accelerometer 1 of the present application to be applied to scenarios with a relatively wide acceleration range and a relatively narrow acceleration range, improving the applicable range of the force balance accelerometer 1. At the same time, the adjustment component moves in the height direction to adjust the position of the moving pole piece assembly 40 to avoid the moving pole piece assembly 40 from colliding with the fixed pole piece assembly 20 when it moves in the height direction.

[0045] Embodiment 2:

[0046] Based on the first embodiment, in this embodiment, the adjusting assembly includes an adjusting slider 31 and an elastic member 32. The adjusting slider 31 is movably sleeved on the outer periphery of the support column 11. One end of the elastic member 32 is connected to the adjusting slider 31, and the other end of the elastic member 32 is connected to the moving pole piece assembly 40.

[0047] It can be understood that the adjusting slider 31 is movably sleeved on the outer periphery of the support column 11. The adjusting slider 31 can move on the support column 11 to adjust the position of the elastic member 32, so as to realize the adjustment of the position of the moving pole piece assembly 40. One end of the elastic member 32 is connected to the adjusting slider 31, and the other end of the elastic member 32 is connected to the moving pole piece assembly 40. It should be noted that the elastic member 32 can be configured as a spring, and the elastic member 32 can also be configured as a reed, which is not limited herein.

[0048] When an acceleration acts on the system, the moving pole piece assembly 40 will move in the height direction relative to the moving pole piece assembly 40 under the action of the elastic member 32. The movement of the moving pole piece assembly 40 will drive the coil to move in the height direction. At this time, a current is applied to the coil to balance the acceleration. Finally, the magnitude of the original acceleration can be calculated by detecting the magnitude of the current applied to the coil.

[0049] According to some embodiments of the present invention, a first external thread 111 is provided on the outer peripheral wall of the support column 11, and a first threaded hole is provided on the adjusting slider 31. The first threaded hole is in threaded cooperation with the first external thread 111.

[0050] In some embodiments, the adjusting slider 31 is provided with a first threaded hole extending in the height direction. The inner peripheral wall of the first threaded hole is provided with a first internal thread, and the first external thread 111 is in threaded cooperation with the first internal thread. Thus, by rotating the adjusting slider 31 relative to the support column 11, the height of the adjusting slider 31 relative to the support column 11 can be controlled. The adjustment method of the adjusting slider 31 is simple and easy to implement. In particular, the threaded cooperation method between the adjusting slider 31 and the support column 11 has a self-locking function, that is, when the adjusting slider 31 is adjusted to a preset height, the adjusting slider 31 can be stably located at the preset height.

[0051] According to some embodiments of the present invention, the adjusting slider 31 is provided with a first sliding groove 311 extending in the circumferential direction, and one end of the elastic member 32 is provided with a first slider, and the first slider is movably arranged in the first sliding groove 311.

[0052] It can be understood that the adjusting slider 31 is provided with an annular first slide groove 311, and the first slider of the elastic member 32 is movably provided in the first slide groove 311. Therefore, when the adjusting slider 31 is rotated to adjust its own height, the first slider can move relative to the first slide groove 311 to avoid the elastic member 32 from rotating when the adjusting slider 31 rotates, thereby facilitating the adjustment of the adjusting slider 31 in the height direction and improving the operational convenience of the adjusting component.

[0053] Embodiment three:

[0054] In this embodiment, based on the first embodiment, the support column 11 is provided with a second slide groove 112 extending in the height direction, and the pole piece assembly 20 is provided with a second slider, which is movably disposed in the second slide groove 112 .

[0055] It can be understood that the inner circumferential wall of the second slide groove 112 can limit the outer circumferential wall of the second slider, so that the second slider can stably move along the extension direction of the second slide groove 112, thereby allowing the fixed pole piece assembly 20 to move stably in the height direction.

[0056] According to some embodiments of the utility model, the second slide groove 112 penetrates the support column 11 in the radial direction, the cross-section of the second slider is circular, and the outer peripheral wall of the second slider is provided with a second external thread; wherein the force balance accelerometer 1 also includes: a fastening nut, the fastening nut is located on the side of the support column 11 away from the fixed pole piece assembly 20, and the fastening nut is threadably matched with the second external thread.

[0057] In some embodiments, the support column 11 is provided with a second slide groove 112 extending in the height direction, the second slide groove 112 penetrates the support column 11 in the radial direction, the second slider passes through the second slide groove 112 and extends to the other side of the support column 11, the outer peripheral wall of the second slider is provided with a second external thread, and the nut is threadedly matched with the second external thread. When the fixed pole piece assembly 20 moves to the preset position, the nut moves toward the support column 11 and stops and locks with the support column 11, thereby fixing the fixed pole piece assembly 20 at the preset position.

[0058] Preferably, a stop surface 113 is provided on the side of the support column 11 facing away from the fixed pole piece assembly 20, and the stop surface 113 is suitable for contacting with the nut, that is, the stop surface 113 can increase the stop area between the support column 11 and the nut, thereby increasing the locking effect of the support column 11 and the nut, and further improving the fixing effect of the fixed pole piece assembly 20.

[0059] Embodiment 4:

[0060] Based on Embodiment 2, in this embodiment, the stationary pole piece assembly 20 includes a plurality of stationary pole pieces, and the plurality of stationary pole pieces are stacked in the height direction. It can be understood that stacking a plurality of stationary pole pieces can increase the total capacitance value, thereby improving the sensitivity and response speed of the system.

[0061] According to some embodiments of the present invention, the tab of the stationary pole piece is trapezoidal or elliptical. It can be understood that the trapezoidal or elliptical shape can improve the electromagnetic field distribution and enhance the induction efficiency.

[0062] Thus, by stacking a plurality of stationary pole pieces and adopting a trapezoidal or elliptical shape of the stationary pole piece, higher sensitivity and better electromagnetic field distribution can be achieved, which not only improves the measurement accuracy, but also enhances the stability and reliability of the system. At the same time, by optimizing the design of the stationary pole piece assembly 20, the force balance accelerometer 1 of the present application can adapt to different acceleration ranges and maintain good performance under various conditions.

[0063] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A force balance accelerometer based on Beidou time service, characterized in that, include: A main body (10), wherein the main body (10) is provided with a support column (11) extending in a height direction; A fixed pole piece assembly (20), wherein the number of the fixed pole piece assemblies (20) is two, the two fixed pole piece assemblies (20) are respectively connected to the support column (11), and the two fixed pole piece assemblies (20) are arranged at intervals in the height direction, and at least one of the fixed pole piece assemblies (20) can be selectively moved relative to the support column (11) in the height direction; An adjustment component, one end of which is movably connected to the support column (11), and the adjustment component can be selectively moved in a height direction; A moving pole piece assembly (40), the moving pole piece assembly (40) being connected to the other end of the adjusting assembly, the moving pole piece assembly (40) being arranged between the two fixed pole piece assemblies (20); a sensor is arranged on one side of the moving pole piece assembly (40), the sensor being used to collect the working condition of the moving pole piece assembly (40); A controller is disposed in the main body and is used to access a Beidou server. The controller is connected to a sensor signal, and the sensor transmits the collected working condition data of the pole piece assembly (40) to the controller, and the controller records the working condition data and the collection time.

2. The force balance accelerometer based on Beidou time service according to claim 1, wherein The adjustment component comprises: An adjusting slider (31), the adjusting slider (31) being movably sleeved on the outer circumference of the supporting column (11); An elastic member (32), one end of the elastic member (32) is connected to the adjusting slider (31), and the other end of the elastic member (32) is connected to the moving pole piece assembly (40).

3. The force balance accelerometer based on Beidou time service according to claim 2, characterized in that, The outer peripheral wall of the support column (11) is provided with a first external thread (111), and the adjusting slider (31) is provided with a first threaded hole, and the first threaded hole is threadably matched with the first external thread (111).

4. The force balance accelerometer based on Beidou time service according to claim 3, characterized in that, The adjusting slider (31) is provided with a first sliding groove (311) extending in the circumferential direction, and one end of the elastic member (32) is provided with a first slider, which is movably arranged in the first sliding groove (311).

5. The force balance accelerometer based on Beidou time service according to claim 1, characterized in that The support column (11) is provided with a second slide groove (112) extending in the height direction, and the fixed pole piece assembly (20) is provided with a second slider, and the second slider is movably arranged in the second slide groove (112).

6. The force balance accelerometer based on Beidou time service according to claim 5, wherein The second slide groove (112) penetrates the support column (11) in the radial direction, the cross section of the second sliding block is circular, and the outer peripheral wall of the second sliding block is provided with a second external thread; wherein The Beidou timing-based force balance accelerometer (1) further comprises: a fastening nut, the fastening nut being located on a side of the support column (11) away from the fixed pole piece assembly (20), the fastening nut being threadably matched with the second external thread.

7. The force balance accelerometer based on Beidou time service according to claim 1, characterized in that The fixed pole piece assembly (20) comprises a plurality of fixed pole pieces, and the plurality of fixed pole pieces are stacked in a height direction.

8. The force balance accelerometer based on Beidou time service according to claim 7, characterized in that, The connecting piece of the fixed pole piece is trapezoidal or elliptical.

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