Vehicle-mounted beacon antenna calibration tool

Abstract

The utility model discloses a vehicle beacon antenna calibration frock relates to communication technical field, including vibration table, dynamic adjustment mechanism is installed in the top middle part of vibration table, dynamic adjustment mechanism includes reinforcing chassis, six first connecting pieces, six drive assemblies, six second connecting pieces and dynamic adjustment frame, reinforcing chassis is installed in the top of vibration table, the utility model effectively solved the problem that traditional calibration frock cannot simulate the dynamic posture in vehicle driving, with the help of universal adjusting characteristic of connecting piece, dynamic adjustment frame can be adjusted on multiple dimensions flexibly, and under the driving effect of drive assembly, can accurate simulation vehicle acceleration's pitch angle change, the dynamic posture such as the roll angle deviation when turning, and then reproduce the complex scene in vehicle actual driving, make antenna calibration more close to actual use situation, improved the accuracy and reliability of calibration result.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, specifically to a vehicle-mounted beacon antenna calibration fixture. Background Technology

[0002] Vehicle-mounted beacon antennas are specialized communication components designed specifically for vehicles. They are typically installed in suitable locations on the exterior of the vehicle body. Their core function is to receive or transmit beacon signals in specific frequency bands, enabling stable interaction between the vehicle and external beacon systems. They are adaptable to high-speed vehicle movement, complex road conditions, and different weather environments, ensuring reliable signal transmission. They have a wide range of applications in practical applications. During the production process of vehicle-mounted beacon antennas, calibration fixtures are required to calibrate the antennas.

[0003] Traditional calibration fixtures are mostly statically positioned, which can only perform antenna performance calibration in a fixed posture. They cannot reproduce the dynamic scenarios in actual vehicle driving, such as pitch angle changes when the vehicle accelerates, roll angle shifts when turning, and high-frequency vibrations caused by bumpy roads. These dynamic postures directly change the relative angle, distance, and signal propagation path between the antenna and the roadside beacon. Static calibration cannot simulate such dynamic interaction processes, resulting in deviations between the calibration results and the actual performance after installation on the vehicle. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle-mounted beacon antenna calibration fixture to solve the problem that existing static calibration fixtures cannot simulate the dynamic attitude of a vehicle while it is in motion.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted beacon antenna calibration fixture, including a vibration table;

[0006] A dynamic adjustment mechanism is installed at the top center of the vibration table;

[0007] The dynamic adjustment mechanism includes a reinforced base frame, six first connecting members, six drive components, six second connecting members, and a dynamic adjustment frame. The reinforced base frame is installed on the top of the vibration table. The six first connecting members are installed in pairs at the triangular position at the top of the reinforced base frame. The six drive components are respectively installed on the top of the six first connecting members. The six second connecting members are respectively installed on the top of the six drive components. The dynamic adjustment frame is installed between the tops of the six second connecting members.

[0008] A tooling base is installed on the top of the dynamic adjustment mechanism;

[0009] The antenna body is mounted on the top center of the tooling base.

[0010] Furthermore, a storage groove is provided at the bottom center of the tooling base, a three-axis accelerometer is installed in the center of the top inner wall of the storage groove, a gyroscope is installed on one side of the top of the tooling base, a magnetometer is installed on the other side of the top of the tooling base, an electromagnetic plate is installed in the center of the top of the tooling base, and a positioning block is installed in the center of the top of the electromagnetic plate.

[0011] Furthermore, a vibration motor is installed on both sides of the bottom end of the vibration table, and an air spring is installed at each of the four corners of the bottom end of the vibration table. A mounting base is installed between the bottom ends of the four air springs.

[0012] Furthermore, a temperature and humidity sensor is installed at the bottom center of the vibration table, and a laser rangefinder is installed at the top center of the mounting base.

[0013] Furthermore, both the reinforced base frame and the dynamic adjustment frame are configured with a herringbone structure, and both the first and second connecting parts are configured as universal joints.

[0014] Furthermore, the bottom end of the antenna body is provided with a groove that is compatible with the electromagnetic plate and the positioning block, and the electromagnetic plate and the positioning block are engaged with the groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) This utility model effectively solves the problem that traditional calibration fixtures cannot simulate the dynamic attitude of a vehicle during driving by working together with the reinforced base frame, the first connector, the drive component, the second connector and the dynamic adjustment frame. With the help of the universal adjustment characteristics of the connector, the dynamic adjustment frame can be flexibly adjusted in multiple dimensions. Under the driving action of the drive component, it can accurately simulate the dynamic attitude of the vehicle, such as the pitch angle change when accelerating and the roll angle shift when turning, thereby reproducing the complex scene in actual vehicle driving, making the antenna calibration closer to the actual use situation, and improving the accuracy and reliability of the calibration results.

[0017] (2) Through the coordinated work of the tooling base, antenna body, three-axis accelerometer, gyroscope, magnetometer, electromagnetic plate and positioning block, the three-axis accelerometer can accurately measure the acceleration change of the antenna during the calibration process, the gyroscope can monitor the angular velocity and attitude change of the antenna in real time, the magnetometer is used to measure the magnetic field strength and direction of the surrounding environment, and at the same time, through the snap-fit ​​cooperation between the electromagnetic plate and the positioning block and the bottom groove of the antenna body, the antenna body can be quickly and accurately installed and positioned. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the dynamic adjustment mechanism is provided for an embodiment of this utility model;

[0021] Figure 3 A structural cross-sectional view of the tooling base is provided for an embodiment of this utility model;

[0022] Figure 4 A structural schematic diagram of the vibration assembly is provided for an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Vibration table; 2. Dynamic adjustment mechanism; 3. Tooling base; 4. Antenna body; 5. Three-axis accelerometer; 6. Gyroscope; 7. Magnetometer; 8. Electromagnetic plate; 9. Positioning block; 10. Temperature and humidity sensor; 11. Vibration motor; 12. Air spring; 13. Mounting base; 14. Laser rangefinder; 15. Storage slot; 21. Reinforced base frame; 22. First connector; 23. Drive assembly; 24. Second connector; 25. Dynamic adjustment frame. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] Example 1:

[0028] This utility model provides a vehicle-mounted beacon antenna calibration fixture, including a vibration table 1, which is used to simulate the high-frequency vibration scenario generated by bumpy road surface during vehicle driving, and to provide a real vibration environment for antenna calibration.

[0029] The dynamic adjustment mechanism 2 is installed at the top center of the vibration table 1, serving as the core execution component for realizing dynamic adjustment of the antenna attitude;

[0030] The dynamic adjustment mechanism 2 includes a reinforced base frame 21, six first connecting parts 22, six drive components 23, six second connecting parts 24, and a dynamic adjustment frame 25. The reinforced base frame 21 is installed on the top of the vibration table 1 and serves to support and stabilize the overall structure of the dynamic adjustment mechanism 2. The six first connecting parts 22 are installed in pairs at the top triangular position of the reinforced base frame 21 to form a stable three-point support layout. The six drive components 23 are respectively installed on the top of the six first connecting parts 22. The drive components 23 adopt servo electric cylinders and have high-precision displacement adjustment capabilities. The six second connecting parts 24 are respectively installed on the top of the six drive components 23. The dynamic adjustment frame 25 is installed between the tops of the six second connecting parts 24 and can achieve multi-dimensional attitude adjustment under the coordinated drive of the six drive components 23.

[0031] Tooling base 3 is installed on top of dynamic adjustment mechanism 2;

[0032] The antenna body 4 is mounted on the top center of the tooling base 3;

[0033] Vibration motors 11 are installed on both sides of the bottom of the vibration table 1. The two vibration motors 11 can generate vibrations with an adjustable frequency of 10-50Hz when they work synchronously. Air springs 12 are installed at the four corners of the bottom of the vibration table 1. They have shock absorption and buffering functions, which can reduce the transmission of vibration to the mounting base 13. The mounting base 13 is installed between the bottom ends of the four air springs 12. The bottom is provided with anti-slip pads to ensure the stability of the tooling as a whole.

[0034] A temperature and humidity sensor 10 is installed at the bottom center of the vibration table 1 to monitor the temperature and humidity parameters of the calibration environment in real time, providing environmental data support for the accuracy of the calibration results. A laser rangefinder 14 is installed at the top center of the mounting base 13. The detection direction of the laser rangefinder 14 is vertically upward, used to measure the vibration amplitude and displacement of the vibration table 1 in real time.

[0035] Both the reinforced base frame 21 and the dynamic adjustment frame 25 are designed with a V-shaped structure. This structure has the characteristics of high strength and high stability, which can effectively disperse the force during the dynamic adjustment process. The first connector 22 and the second connector 24 are both designed as universal joints, which have 360° rotational freedom, ensuring that the power transmission of the drive component 23 is not limited by angle, and realizing flexible attitude adjustment of the antenna body 4.

[0036] Working principle: During use, the antenna body 4 is installed at the top center of the fixture base 3 for signal transmission and reception. The vibration table 1 provides a basic vibration environment. The vibration motor 11 generates vibration to simulate the high-frequency scenario of a bumpy road surface, thereby verifying the signal stability of the antenna body 4 under vibration. The air springs 12 at the four corners serve to dampen vibration and stabilize the overall fixture, while also ensuring efficient transmission of vibration energy to the antenna body 4. The temperature and humidity sensor 10 monitors the ambient temperature and humidity in real time, providing environmental data reference for calibration results. The laser rangefinder 14 verifies the damping effect of the air springs 12 through distance measurement. When it is necessary to simulate the dynamic posture of a vehicle in motion, the control system controls the drive components 23 to start. It can independently receive control signals and output precise power. The first connector 22 serves as the connection hub between the drive component 23 and the reinforced base frame 21, and the second connector 24 serves as the connection hub between the drive component 23 and the dynamic adjustment frame 25. The universal joint structure adopted by both gives the dynamic adjustment frame 25 multi-dimensional flexible adjustment capability, so that under the synergistic effect of the drive component 23, it can accurately simulate the dynamic attitude of the vehicle, such as the pitch angle change during acceleration and the roll angle shift during turning, thereby reproducing the complex scenario of actual vehicle driving, making the antenna calibration closer to the actual use situation, and effectively improving the accuracy and reliability of the calibration results. This calibration fixture successfully solves the problem that traditional static calibration cannot simulate the dynamic attitude of the vehicle, and significantly improves the accuracy of antenna calibration.

[0037] Example 2:

[0038] This embodiment is basically the same as the previous embodiment, except that a storage groove 15 is provided in the middle of the bottom of the tooling base 3, a three-axis accelerometer 5 is installed in the middle of the top inner wall of the storage groove 15, which is used to collect the acceleration data of the antenna body 4 in real time during the dynamic adjustment process, a gyroscope 6 is installed on one side of the top of the tooling base 3, which is used to accurately detect the attitude angle change of the antenna body 4, a magnetometer 7 is installed on the other side of the top of the tooling base 3, which is used to assist in positioning the spatial orientation of the antenna body 4, an electromagnetic plate 8 is installed in the middle of the top of the tooling base 3, which has an electric adsorption function to enhance the fixed stability of the antenna body 4, and a positioning block 9 is installed in the middle of the top of the electromagnetic plate 8. The positioning block 9 has a cylindrical structure and is used to realize the rapid positioning of the antenna body 4.

[0039] The bottom of the antenna body 4 is provided with a groove that is compatible with the electromagnetic plate 8 and the positioning block 9. The inner wall of the groove is provided with anti-slip texture, and the electromagnetic plate 8 and the positioning block 9 are engaged with the groove. Combined with the adsorption force of the electromagnetic plate 8, the antenna body 4 can be effectively prevented from shifting or falling off during dynamic calibration.

[0040] Working principle: During use, the antenna body 4 is used to receive or transmit beacon signals in a specific frequency band. The triaxial accelerometer 5 can accurately measure the acceleration changes of the antenna body 4 during the calibration process, including the acceleration in the horizontal and vertical directions, providing important data support for analyzing the dynamic performance of the antenna. The gyroscope 6 can monitor the angular velocity and attitude changes of the antenna body 4 in real time, accurately capturing the rotation and tilt of the antenna during dynamic adjustment. The magnetometer 7 is used to measure the magnetic field strength and direction of the surrounding environment, assisting in determining the spatial orientation of the antenna body 4. At the same time, through the snap-fit ​​cooperation between the electromagnetic plate 8, the positioning block 9 and the groove at the bottom of the antenna body 4, the control system activates the electromagnetic plate 8 to generate magnetic force to attract the antenna body 4, thereby realizing the rapid and accurate installation and positioning of the antenna body 4, ensuring the positional accuracy of the antenna body 4 during the calibration process, and ultimately improving the accuracy and repeatability of the calibration.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A calibration fixture for a vehicle-mounted beacon antenna, characterized in that, include: Vibration table (1); A dynamic adjustment mechanism (2) is installed at the top center of the vibration table (1); The dynamic adjustment mechanism (2) includes a reinforced base frame (21), six first connectors (22), six drive components (23), six second connectors (24), and a dynamic adjustment frame (25). The reinforced base frame (21) is installed on the top of the vibration table (1). The six first connectors (22) are installed in pairs at the top triangular position of the reinforced base frame (21). The six drive components (23) are respectively installed on the top of the six first connectors (22). The six second connectors (24) are respectively installed on the top of the six drive components (23). The dynamic adjustment frame (25) is installed between the tops of the six second connectors (24). Tooling base (3) is installed on the top of the dynamic adjustment mechanism (2); The antenna body (4) is installed at the top center of the tooling base (3).

2. The vehicle-mounted beacon antenna calibration fixture according to claim 1, characterized in that, The tooling base (3) has a storage groove (15) at the bottom center. A three-axis accelerometer (5) is installed in the middle of the top inner wall of the storage groove (15). A gyroscope (6) is installed on one side of the top of the tooling base (3). A magnetometer (7) is installed on the other side of the top of the tooling base (3). An electromagnetic plate (8) is installed in the middle of the top of the tooling base (3). A positioning block (9) is installed in the middle of the top of the electromagnetic plate (8).

3. The vehicle-mounted beacon antenna calibration fixture according to claim 1, characterized in that, Vibration motors (11) are installed on both sides of the bottom end of the vibration table (1), and air springs (12) are installed at the four corners of the bottom end of the vibration table (1). A mounting base (13) is installed between the bottom ends of the four air springs (12).

4. The vehicle-mounted beacon antenna calibration fixture according to claim 3, characterized in that, A temperature and humidity sensor (10) is installed at the bottom center of the vibration table (1), and a laser rangefinder (14) is installed at the top center of the mounting base (13).

5. The vehicle-mounted beacon antenna calibration fixture according to claim 1, characterized in that, The reinforced base frame (21) and the dynamic adjustment frame (25) are both configured as A-frame structures, and the first connector (22) and the second connector (24) are both configured as universal joints.

6. The vehicle-mounted beacon antenna calibration fixture according to claim 2, characterized in that, The bottom end of the antenna body (4) is provided with a groove that is compatible with the electromagnetic plate (8) and the positioning block (9), and the electromagnetic plate (8) and the positioning block (9) are engaged with the groove.

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