Calibration device
By coordinating the clamping and calibration components, the problems of low efficiency and poor accuracy in base station calibration in the prior art are solved, and efficient, accurate and reliable data acquisition for base station calibration is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-03-27
AI Technical Summary
The existing technology for base station calibration using traditional methods such as manual visual inspection is inefficient and inaccurate.
A calibration device is adopted, including a clamping assembly and a calibration assembly. The clamping assembly achieves stable clamping of the base station body through a detachable clamping plate and spring structure. The calibration assembly collects acceleration, angular velocity, attitude information and levelness data in real time through IMU sensors and electronic level and transmits them to external control equipment.
It improves the efficiency and accuracy of calibration work, avoids errors caused by manual measurement, ensures that the base station body maintains a fixed and accurate position during the calibration process, and enhances the accuracy and reliability of calibration.
Smart Images
Figure CN224052402U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wireless positioning, and in particular to a calibration device. Background Technology
[0002] In today's technological applications, Bluetooth AOA (Angle of Arrival) base stations play a crucial role in the field of wireless positioning. They can accurately locate target devices by receiving the angle of arrival of Bluetooth signals, and are widely used in many fields such as indoor positioning, smart warehousing, and smart parking.
[0003] Calibration is crucial to ensure that Bluetooth AOA base stations can accurately and stably perform their positioning functions. The main purpose of calibration is to precisely calibrate and set various parameters of the base station to correct measurement errors caused by environmental factors and the characteristics of the equipment itself, thereby improving the accuracy and reliability of base station positioning.
[0004] Current calibration work mainly relies on manual operation, using traditional methods such as laser rangefinders, measuring tapes, and visual inspection to determine the precise location of base stations. This is not only time-consuming but also prone to errors. Utility Model Content
[0005] The purpose of this invention is to provide a calibration device to solve the technical problems of low efficiency and poor accuracy in the existing technology of base station calibration by traditional methods such as manual visual inspection.
[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:
[0007] A calibration device, comprising:
[0008] The clamping assembly includes two clamping plates arranged opposite each other, the two clamping plates being detachably clamped to the base station body, and at least one of the clamping plates being able to move in a direction toward or away from the other clamping plate, thereby adjusting the distance between the two clamping plates;
[0009] A calibration component is connected to the clamping component. The calibration component is used to acquire calibration data of the base station body and transmit the calibration data to an external control device. The calibration data includes acceleration, angular velocity, attitude information, and levelness.
[0010] Preferably, a spring is provided between the two clamping plates, with both ends of the spring connected to the two clamping plates respectively, and the spring can contract to bring the two clamping plates closer to each other.
[0011] Preferably, two springs are provided, and the two springs are located on the same side of the clamping plate, with the two springs arranged at intervals.
[0012] Preferably, the clamping assembly further includes a guide rod that passes through the spring, the guide rod has an adjustable height along its own axis, and both ends of the guide rod are respectively connected to the two clamping plates.
[0013] Preferably, one of the clamping plates has at least two oppositely arranged sliding grooves, and each sliding groove has a slidably connected gripper. The multiple grippers can slide relative to each other in the direction close to the base station body and abut against the base station body, thereby fixing the base station body.
[0014] Preferably, a coil spring structure is provided for each of the grippers, the coil spring structure being used to apply a pushing force to the gripper so that it slides closer to the base station body.
[0015] Preferably, four slides are provided, and the four slides are arranged in a circular array at intervals, with the base station body located at the center of the four slides.
[0016] Preferably, the clamping plate has an opening for clearance, through which at least a portion of the base station body can be exposed.
[0017] Preferably, the base station body is provided with a buckle, which can be exposed from the clearance opening and can be detachably connected to an external device.
[0018] Preferably, the calibration component includes a housing, a data acquisition module, and a communication module. The data acquisition module and the communication module are disposed inside the housing. The housing is connected to the clamping component. The data acquisition module is used to acquire the calibration data of the base station body, and the communication module is used to transmit the calibration data to an external control device.
[0019] The beneficial effects of this utility model are:
[0020] The calibration device proposed in this invention comprises a clamping assembly consisting of two opposing clamping plates with an adjustable spacing. In practical operation, the clamping assembly can be precisely adapted to base station bodies of different sizes and shapes. Because the spacing between the clamping plates can be freely adjusted, the base station body can be securely clamped regardless of its size, evenly distributing the clamping force, improving stability, and ensuring that the base station body does not shift or deform due to uneven local force during calibration. Therefore, when acquiring calibration data, the base station body remains in a fixed and accurate position, improving the accuracy and consistency of the calibration data. The calibration assembly is connected to the clamping assembly and can achieve real-time, high-speed, and accurate calibration data acquisition from the base station body. In summary, this calibration device, through the coordinated operation of the clamping and calibration assemblies, improves the efficiency and quality of calibration work, avoids errors and uncertainties caused by manual measurement, and enhances the accuracy and reliability of calibration. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the calibration device and the base station body provided in this embodiment of the utility model.
[0022] Figure 2 This is an exploded structural diagram of the calibration device and the base station body provided in this embodiment of the utility model.
[0023] Figure 3 This is a first structural schematic diagram of the calibration device provided in this embodiment of the present invention;
[0024] Figure 4 This is a second structural schematic diagram of the calibration device provided in this embodiment of the present invention.
[0025] In the picture:
[0026] 100. Base station main body; 101. Clip;
[0027] 1. Clamping assembly; 11. Clamping plate; 111. Slide groove; 112. Clearance opening; 12. Spring; 13. Guide rod; 14. Gripper;
[0028] 2. Calibration components; 21. IMU sensor; 22. Electronic level. Detailed Implementation
[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0033] See Figures 1 to 4 The calibration device provided in this embodiment of the present invention includes a clamping assembly 1 and a calibration assembly 2. The clamping assembly 1 includes two clamping plates 11 arranged opposite to each other, which are detachably clamped onto the base station body 100. At least one clamping plate 11 can move towards or away from the other clamping plate 11 to adjust the distance between the two clamping plates 11. The calibration assembly 2 is connected to the clamping assembly 1 and is used to acquire calibration data of the base station body 100 and transmit the calibration data to an external control device. The calibration data includes acceleration, angular velocity, attitude information, and levelness.
[0034] The calibration device proposed in this invention comprises a clamping assembly 1 consisting of two opposing clamping plates 11 with an adjustable spacing. In actual operation, the clamping assembly 1 can be precisely adapted to base station bodies 100 of different sizes and shapes. Because the spacing between the clamping plates 11 can be freely changed, the base station body 100 can be securely clamped regardless of its size, evenly distributing the clamping force, improving stability, and ensuring that the base station body 100 does not shift or deform due to uneven local force during calibration. Therefore, when acquiring calibration data, the base station body 100 remains in a fixed and accurate position, improving the accuracy and consistency of the calibration data. The calibration assembly 2 is connected to the clamping assembly 1 and can achieve real-time, high-speed, and accurate calibration data acquisition from the base station body 100. In summary, this calibration device, through the coordinated operation of the clamping assembly 1 and the calibration assembly 2, improves the efficiency and quality of calibration work, avoids errors and uncertainties caused by manual measurement, and improves the accuracy and reliability of calibration.
[0035] The base station body 100 is a technical device that is already in use in this field. Those skilled in the art will understand its working principle and specific structure, so it will not be described in detail here.
[0036] The specific structure of the calibration device is described below.
[0037] The clamping assembly 1 achieves the clamping effect on the base station body 100 by bringing the two clamping plates 11 closer together. Specifically, a spring 12 is provided between the two clamping plates 11, with each end of the spring 12 connected to one of the two clamping plates 11. The spring 12 can contract to bring the two clamping plates 11 closer together. In use, when it is necessary to clamp the base station body 100, the two clamping plates 11 are pulled apart, at which point the spring 12 is stretched. After the clamping plates 11 are released, the contraction force of the spring 12 brings the two clamping plates 11 closer together, thereby achieving the clamping of the base station body 100. The elastic potential energy of the spring 12 provides automatic reset and clamping force for the clamping action. The presence of the spring 12 makes the clamping operation more convenient and efficient, reduces the tedious steps of manually adjusting the position of the clamping plates 11, and can also adapt to base station bodies 100 of different sizes within a certain range, enhancing the versatility and practicality of the device.
[0038] For example, when facing base station bodies 100 of different thicknesses, a thicker base station body 100 will cause the spring 12 to stretch a longer distance, but the spring 12 will always tend to contract to ensure sufficient clamping force. For a thinner base station body 100, the spring 12 stretches less, but can still provide a stable clamping effect.
[0039] Specifically, two springs 12 are provided, located on the same side of the clamping plate 11, giving the clamping plate 11 on the side away from the spring 12 a higher degree of freedom. In actual operation, when the base station body 100 needs to be placed between the two clamping plates 11, the clamping plate 11 on the side away from the spring 12 is not obstructed by the spring 12, and has a larger range of motion and higher degree of freedom, making it easier to open and providing more spacious space for the base station body 100 to enter. The two springs 12 are arranged at intervals, which can provide a more uniform and stable clamping force, further enhancing the reliability and stability of clamping and ensuring that the base station body 100 can maintain an accurate position during calibration.
[0040] Furthermore, the clamping assembly 1 also includes a guide rod 13, which passes through the spring 12. The guide rod 13 is height-adjustable along its own axial direction, and its two ends are connected to the two clamping plates 11 respectively. The guide rod 13, passing inside the spring 12, provides stable guidance for the extension and retraction of the spring 12. During clamping operations, the extension and retraction of the spring 12 is prone to irregular deformation. The presence of the guide rod 13 effectively limits the twisting and bending of the spring 12, ensuring that the spring 12 extends and retracts along the axial direction of the guide rod 13. This makes the relative movement of the two clamping plates 11 smoother and more precise, improving the stability and reliability of the clamping. The height-adjustable guide rod 13 avoids restricting the relative movement of the two clamping plates 11, ensuring that the two clamping plates 11 can move flexibly to achieve accurate clamping under various conditions.
[0041] Specifically, the guide rod 13 consists of an outer rod and an inner rod. The outer rod is a hollow tubular structure, and the inner rod is coaxially sleeved inside the outer rod. One end of the outer rod is fixedly connected to one of the clamping plates 11, and one end of the inner rod is fixedly connected to the other clamping plate 11. In use, when the two clamping plates 11 move closer or further apart, the inner rod will slide axially within the outer rod accordingly to achieve guidance and height adjustment. In other embodiments, the guide rod 13 can also be configured to be electrically telescopic to achieve height adjustment, which will not be elaborated here.
[0042] Regarding the method of adjusting the distance between the two clamping plates 11, besides the method provided in this embodiment using the cooperation of spring 12 and guide rod 13, in other embodiments, a screw and nut mechanism can also be used to adjust the distance between the clamping plates 11. A screw is installed between the two clamping plates 11, with one end connected to one of the clamping plates 11 via a bearing, allowing it to rotate freely, and the other end passing through the other clamping plate 11 and threadedly engaging with it. An adjustment knob is installed at the end of the screw; rotating the adjustment knob drives the screw to rotate, thereby moving the threaded clamping plate 11 along the screw axis, thus adjusting the distance between the clamping plates 11. Other methods can also be used; the specific implementation method is not limited here, as long as the distance between the two clamping plates 11 is adjustable.
[0043] By clamping the base station body 100 with two clamping plates 11, the base station body 100 can be limited and fixed in the height direction. However, in some cases, the base station body 100 may also shift or sway in the horizontal direction between the two clamping plates 11, affecting the calibration effect. Therefore, at least two oppositely arranged sliding grooves 111 are provided on one of the clamping plates 11. Each sliding groove 111 is slidably connected with a claw 14. The multiple claws 14 can slide relative to each other in the direction close to the base station body 100 and abut against the base station body 100, thereby fixing the base station body 100.
[0044] In use, after the base station body 100 is initially clamped and fixed by the two clamping plates 11, each gripper 14 is pushed to slide relative to the base station body 100 within its corresponding groove 111. Since the sliding directions of the grippers 14 are relative, they can gradually approach the base station body 100 and eventually abut against its side. Multiple grippers 14 contact the base station body 100 from different directions, forming a horizontal clamping force on the base station body 100, thereby effectively fixing the base station body 100 and preventing it from shifting or shaking in the horizontal direction. Simultaneously, the sliding connection of the grippers 14 within the groove 111 makes operation flexible and convenient, adaptable to base station bodies 100 of different shapes and sizes, and improves the versatility and practicality of the device.
[0045] Specifically, four slide grooves 111 are provided, and the four slide grooves 111 are arranged in a circumferential array at intervals. The base station body 100 is located at the center of the four slide grooves 111, which reduces local stress concentration, balances the clamping force on the base station body 100, and further improves the stability of the base station body 100.
[0046] Furthermore, a coil spring structure is provided for each gripper 14. The coil spring structure is used to apply a pushing force to the gripper 14, causing it to slide towards the base station body 100. The coil spring structure includes a fixed end and a movable end. The fixed end is connected to the end of the slide groove 111 away from the base station body 100, and the movable end is connected to the gripper 14. Since the coil spring structure has a certain elastic potential energy, when the gripper 14 is in a position away from the base station body 100, the coil spring is in a compressed state, thereby allowing the coil spring structure to store energy.
[0047] In use, the base station body 100 is first placed between the two clamping plates 11, and positioned approximately at the center of the four sliding grooves 111. At this time, since the coil spring is in a naturally extended state, the gripper 14 is located in the sliding groove 111 near one end of the base station body 100.
[0048] As the base station body 100 is inserted, the coil spring is compressed, generating an elastic restoring force, which applies a pushing force to the gripper 14. Under the action of the coil spring's pushing force, the gripper 14 automatically slides along the slide groove 111 towards the base station body 100. During the sliding process of the gripper 14, no additional manual operation is required; the coil spring continuously pushes the gripper 14 until it is in close contact with the side of the base station body 100. When it is necessary to replace the base station body 100 for calibration, the current base station body 100 is removed, the coil spring returns to its natural extended state, and the gripper 14 returns to the end of the slide groove 111 near the base station body 100, ready for the fixation operation of the next base station body 100. Throughout the process, the coil spring structure automatically functions to push the gripper 14 and fix the base station body 100, making the operation simple and efficient, and effectively improving the efficiency and accuracy of calibration work.
[0049] In other embodiments, in addition to the coil spring structure, the movement of the gripper 14 in the slide groove 111 can also be achieved by devices such as electric push rods and cylinders, which will not be described in detail here.
[0050] Furthermore, the clamping plate 11 has a clearance opening 112, through which at least a portion of the base station body 100 can be exposed. On one hand, this reduces the contact area between the clamping plate 11 and the base station body 100, minimizing potential wear or scratches to the surface of the base station body 100 caused by an excessively large contact area, thus protecting the appearance integrity and performance stability of the base station body 100. On the other hand, the clearance opening 112 facilitates direct operation, observation, or connection of external equipment to specific parts of the base station body 100 during calibration, improving the convenience and flexibility of the calibration work.
[0051] Specifically, the base station body 100 is provided with a latch 101, which protrudes from the clearance opening 112. The latch 101 can be detachably connected to external equipment, thereby facilitating the connection operation between the base station body 100 and external equipment without disassembling the clamping device, thus improving work efficiency. Since the latch 101 can be accurately exposed from the clearance opening 112, the positioning and adjustment steps during the connection process are reduced, lowering the operational difficulty and the possibility of errors.
[0052] External devices can be fixed devices, protective housings, heat dissipation devices, signal enhancement antennas, etc., located at the installation location, which will not be elaborated here.
[0053] The calibration component 2 includes a housing, a data acquisition module, and a communication module. The data acquisition module and the communication module are housed inside the housing. The housing is connected to the clamping component 1. The data acquisition module is used to acquire calibration data from the base station body 100, and the communication module is used to transmit the calibration data to an external control device, thereby achieving real-time transmission of calibration data.
[0054] The acquisition module includes an IMU sensor 21 and an electronic level 22. The IMU sensor 21 is used to acquire the acceleration, angular velocity and attitude information of the base station body; the electronic level 22 is used to acquire the levelness of the base station body.
[0055] Specifically, calibration component 2 also includes a storage module for storing calibration data so that the calibration data can be read later.
[0056] More specifically, calibration component 2 also includes a communication interface, which is disposed on the housing and electrically connected to the communication module. The communication interface is used for wired connection with external control equipment.
[0057] In addition, calibration component 2 also includes a calibration button, which is located on the housing and electrically connected to the acquisition module. The calibration button is used to start the acquisition module with one click and execute the calibration action logic.
[0058] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A calibration device, characterized by The utility model relates to a kind of base station, including: Clamping assembly (1), including oppositely arranged two clamping plates (11), two The clamping plate (11) can be detachably clamped on base station body (100), at least one The clamping plate (11) can move in the direction of approaching or away from another The clamping plate (11), to adjust the distance between two The clamping plate (11); Calibration assembly (2) is connected with the clamping assembly (1), and the calibration assembly (2) is used to obtain calibration data of the base station body (100), and the calibration data is transmitted to an external control device, wherein the calibration data includes acceleration, angular velocity, attitude information and levelness.
2. The calibration device of claim 1, wherein Two The clamping plate (11) is provided with spring (12), and the two ends of the spring (12) are connected with two The clamping plate (11) respectively, and the spring (12) can be contracted so that two The clamping plate (11) is close to each other.
3. The calibration device of claim 2, wherein, The spring (12) is provided with two, and the two springs (12) are located on the same side of the clamping plate (11), and the two springs (12) are arranged at intervals.
4. The calibration device of claim 2, wherein The clamping assembly (1) further includes a guide rod (13), the guide rod (13) is provided in the spring (12), the height of the guide rod (13) is adjustable along the axis direction of itself, and the two ends of the guide rod (13) are connected with two The clamping plate (11) respectively.
5. The calibration device of claim 1, wherein At least two oppositely arranged sliding grooves (111) are formed in one of the clamping plates (11), each sliding groove (111) is slidably connected with a clamping jaw (14), and a plurality of clamping jaws (14) can slide relative to each other in the direction of approaching the base station body (100) and abut against the base station body (100), thereby fixing the base station body (100).
6. The calibration device of claim 5, wherein A coil spring structure is provided corresponding to each clamping jaw (14), which is used to apply a pushing force to the clamping jaw (14) to slide it in the direction of approaching the base station body (100).
7. The calibration device of claim 5, wherein The sliding groove (111) is provided with four, and the four sliding grooves (111) are arranged in a circumferential array at intervals, and the base station body (100) is located at the center position of the four sliding grooves (111).
8. The calibration device of claim 1, wherein An avoiding opening (112) is formed in the clamping plate (11), and at least part of the base station body (100) can be exposed from the avoiding opening (112).
9. The calibration device of claim 8, wherein, A buckle (101) is provided on the base station body (100), the buckle (101) can be exposed from the avoiding opening (112), and the buckle (101) can be detachably connected with an external device.
10. The calibration device according to any one of claims 1 to 9, characterized in that The calibration assembly (2) includes a housing, an acquisition module and a communication module, the acquisition module and the communication module are arranged in the housing, the housing is connected with the clamping assembly (1), the acquisition module is used to acquire the calibration data of the base station body (100), and the communication module is used to transmit the calibration data to an external control device.