Self-adaptive adjusting device of vehicle-mounted multi-band array antenna

Abstract

The invention, which belongs to the technical field of the vehicle-mounted antenna, provides a self-adaptive adjusting device for a vehicle-mounted multi-band array antenna, the adjusting device comprises an adjusting unit, an array mounting plate, a bearing plate, a multi-sensor array and a control unit. The adjusting unit comprises a rotating platform and a pitching adjusting mechanism, the rotating platform is connected with the bearing plate, the pitching adjusting mechanism is mounted on the bearing plate and connected with the array surface mounting plate, and the rotating platform is used for being mounted on a vehicle-mounted base; the multi-sensor array comprises IMU sensors embedded in the four corners of the array plane mounting plate, a laser ranging grid distributed on the back of the array plane mounting plate, a millimeter wave radar mounted on the central axis of the rotating platform, and a temperature and humidity sensor mounted on the array plane mounting plate. The method is used for solving the problem that the communication quality is reduced due to the fact that an existing vehicle-mounted antenna cannot be effectively and adaptively adjusted in a complex environment.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted antennas, and in particular to an adaptive adjustment device for a vehicle-mounted multi-band array antenna. Background Art

[0002] With the continuous development of in-vehicle communication technology, the performance requirements for in-vehicle antennas are increasing. The in-vehicle environment is complex and changeable. Factors such as vibration and posture changes during vehicle operation, as well as electromagnetic interference from the surrounding environment, can significantly affect the signal reception and transmission quality of the antenna.

[0003] Multi-band antenna arrays, in particular, must maintain excellent performance across different frequency bands to meet the needs of diverse in-vehicle applications such as in-vehicle navigation, vehicle communications, and intelligent driving assistance. Traditional in-vehicle antennas often lack effective adaptive adjustment capabilities, making it difficult to adjust the antenna's posture and parameters in real time in complex in-vehicle environments. This leads to problems such as degraded communication quality and signal interruptions, and they cannot meet the requirements of modern in-vehicle communication systems for efficient and stable communication. Summary of the Invention

[0004] The present invention aims to provide an adaptive adjustment device for a multi-band vehicle-mounted antenna array. This device addresses the problem of existing vehicle-mounted antennas failing to effectively adjust themselves in complex environments, resulting in degraded communication quality. This device can sense the vehicle's operating status and surrounding environment in real time, automatically adjusting the antenna's posture and related parameters to ensure the multi-band antenna array maintains excellent communication performance under various operating conditions.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An adaptive adjustment device for a vehicle-mounted multi-band array antenna, comprising an adjustment unit, an array mounting plate, a carrier plate, a multi-sensor array, and a control unit;

[0007] The adjustment unit includes a rotating platform and a pitch adjustment mechanism. The rotating platform is connected to the carrier plate. The pitch adjustment mechanism is mounted on the carrier plate and connected to the array mounting plate. The rotating platform is used to be mounted on the vehicle base.

[0008] The multi-sensor array includes IMU sensors embedded in the four corners of the array mounting plate, a laser ranging grid distributed on the back of the array mounting plate, a millimeter-wave radar installed on the central axis of the rotating platform, and temperature and humidity sensors mounted on the array mounting plate.

[0009] The control unit includes an environmental perception module, a compensation decision module and an execution drive module. The environmental perception module is used to receive multi-sensor array data. The compensation decision module is connected to the environmental perception module. The input end of the execution drive module is connected to the compensation decision module, and the output end is connected to the mechanical adjustment unit.

[0010] Furthermore, a conductive slip ring is provided between the rotating platform and the vehicle-mounted base, the rotor end of the conductive slip ring is connected to the array mounting plate cable, and the stator end is connected to the control unit.

[0011] The laser ranging grid is arranged in a 20×20 dot matrix, and the multi-sensor array achieves clock synchronization through the WhiteRabbit protocol.

[0012] Furthermore, the rotating platform is rigidly connected to a magnetorheological fluid damper, a piezoelectric ceramic actuator is provided on the back of the array mounting plate, a MEMS micromirror array is provided on the surface of the antenna array element of the array mounting plate, and the magnetorheological fluid damper, piezoelectric ceramic actuator and MEMS micromirror array are connected to the control unit.

[0013] Among them, the compensation decision module includes a reinforcement learning decision unit and a fine-tuning compensation unit. The reinforcement learning decision unit generates the control quantity of the rotating platform and the adjustment unit, and the fine-tuning compensation unit is used to output the driving instructions of the piezoelectric ceramic actuator and the MEMS micromirror array.

[0014] Furthermore, the piezoelectric ceramic actuators are arranged in a 4×4 array, and each actuator is independently connected to the execution drive module.

[0015] Among them, the environmental perception module is used to fuse the IMU sensor and millimeter-wave radar data to build a dynamic coordinate system, and map the laser ranging grid data into the array curvature matrix.

[0016] Among them, the fine-tuning compensation unit receives the real-time vibration spectrum output by the environmental perception module and queries the phase compensation amount based on the vibration transfer function library.

[0017] Furthermore, the pitch adjustment mechanism includes a first support rod, a second support rod and a drive unit, one end of the first support rod and the second support rod are hinged on the supporting plate, the other end of the first support rod and the second support rod are hinged to the array mounting plate, and the above-mentioned first support rod, second support rod and array mounting plate form a triangular stable structure, the drive unit is connected to the first support rod, and is used to drive the formed triangular stable structure to rotate, and the drive unit is connected to the control unit.

[0018] The driving unit includes a telescopic rod, one end of which is hinged to the first support rod, and the other end of which is hinged to the bearing plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By incorporating a control unit, a multi-sensor array, and a control unit, the present invention can sense the vehicle's operating status and surrounding environment in real time, automatically adjusting the antenna's posture and parameters based on this information. The multi-sensor array, including an IMU sensor, a laser ranging grid, a millimeter-wave radar, and temperature and humidity sensors, collects data in real time. The control unit's environmental perception module receives this data, the compensation decision module makes a decision, and the execution drive module drives the control unit. This enables the antenna to maintain excellent communication performance in complex on-board environments, effectively improving the stability and reliability of on-board communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is the overall principle diagram of the adjustment method of the present invention.

[0024] Reference numerals:

[0025] 101 annular track, 102 array mounting plate, 103 bearing plate, 104 rotating platform, 105 pitch adjustment mechanism, 106 first support rod, 107 second support rod, 108 driving unit, 109 slider, 110 first driving unit, 111 groove. DETAILED DESCRIPTION

[0026] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly specified.

[0029] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0032] The following is combined with Figure 1 and Figure 2 The embodiments of the present invention are described in detail.

[0033] Example 1:

[0034] This embodiment discloses an adaptive adjustment device for a vehicle-mounted multi-band array antenna, comprising an adjustment unit, an array mounting plate 102, a carrier plate 103, a multi-sensor array, and a control unit.

[0035] The adjustment unit includes a rotating platform 104 and a pitch adjustment mechanism 105. The rotating platform 104 is connected to the carrier plate 103. The pitch adjustment mechanism 105 is installed on the carrier plate 103 and connected to the array mounting plate 102. The rotating platform 104 is used to be installed on the vehicle base.

[0036] The multi-sensor array includes IMU sensors embedded in the four corners of the array mounting plate 102, a laser ranging grid distributed on the back of the array mounting plate 102, a millimeter wave radar installed on the central axis of the rotating platform 104, and a temperature and humidity sensor mounted on the array mounting plate 102;

[0037] The control unit includes an environmental perception module, a compensation decision module and an execution drive module. The environmental perception module is used to receive multi-sensor array data. The compensation decision module is connected to the environmental perception module. The input end of the execution drive module is connected to the compensation decision module, and the output end is connected to the mechanical adjustment unit.

[0038] By incorporating a control unit, a multi-sensor array, and a control unit, the present invention can sense the vehicle's operating status and surrounding environment in real time, and automatically adjust the antenna's posture and parameters based on this information. For example, the multi-sensor array, including an IMU sensor, a laser ranging grid, a millimeter-wave radar, and a temperature and humidity sensor, collects data in real time. The control unit's environmental perception module receives this data, the compensation decision module makes a decision, and the execution drive module drives the control unit. This enables the antenna to maintain excellent communication performance in complex on-board environments, effectively improving the stability and reliability of on-board communications.

[0039] Furthermore, a conductive slip ring is installed between the rotating platform 104 and the vehicle-mounted base. The rotor end of the conductive slip ring is connected to the array mounting plate 102 cable, and the stator end is connected to the control unit. The installation of the conductive slip ring between the rotating platform 104 and the vehicle-mounted base ensures the stability of the electrical connection between the array mounting plate 102 cable and the control unit when the rotating platform 104 rotates, preventing cable entanglement and damage, improving system reliability and stability, and extending the service life of the device.

[0040] Furthermore, the laser ranging grid is arranged in a 20×20 grid, and the multi-sensor array achieves clock synchronization via the WhiteRabbit protocol. This ensures the time consistency of data acquisition, enabling the control unit to process data more accurately and quickly, improving the system's response speed and adjustment accuracy, allowing the antenna to adapt to environmental changes more promptly and accurately.

[0041] Furthermore, the rotating platform 104 is rigidly connected to a magnetorheological fluid damper, the array mounting plate 102 is backed by a piezoelectric ceramic actuator, and the antenna array element surface of the array mounting plate 102 is provided with a MEMS micromirror array. The magnetorheological fluid damper, piezoelectric ceramic actuator, and MEMS micromirror array are connected to a control unit. The connection between the rotating platform 104 and the magnetorheological fluid damper, the piezoelectric ceramic actuator, and the MEMS micromirror array on the array mounting plate 102 effectively suppresses vibration, compensates for array deformation, and optimizes radiation performance. When the vehicle encounters bumpy roads while driving, the magnetorheological fluid damper quickly adjusts the damping force to reduce vibration of the rotating platform 104, the piezoelectric ceramic actuator fine-tunes the array mounting plate 102, and the MEMS micromirror array optimizes electromagnetic radiation, ensuring that the antenna's communication performance is not affected.

[0042] Furthermore, the compensation decision module includes a reinforcement learning decision unit and a fine-tuning compensation unit. The reinforcement learning decision unit generates control variables for the rotating platform 104 and the adjustment unit, while the fine-tuning compensation unit outputs drive instructions for the piezoelectric ceramic actuator and MEMS micromirror array. These units, respectively, implement coarse and fine adjustments of the antenna's attitude, improving both accuracy and efficiency. The reinforcement learning decision unit generates control variables based on environmental information for coarse adjustments, while the fine-tuning compensation unit outputs drive instructions based on more precise data for fine adjustments. Together, these two units enable the antenna to more accurately adapt to diverse environments and operating conditions.

[0043] Furthermore, the piezoelectric ceramic actuators are arranged in a 4×4 array, with each actuator independently connected to the drive module. This improves the adjustment precision and flexibility of the array mounting plate 102. Minor deformations at different locations on the array mounting plate 102 can be independently controlled, enabling more refined adjustments and further optimizing antenna performance.

[0044] Furthermore, the MEMS micromirror array is embedded in the gap between antenna elements, and the mirror size is ≤λ / 10, where λ is the minimum wavelength of the antenna operating frequency band.

[0045] The environmental perception module further integrates IMU sensor and millimeter-wave radar data to construct a dynamic coordinate system and maps the laser ranging grid data into an array curvature matrix. This provides more accurate information to the compensation decision module, helping it make more reasonable adjustments. For example, the dynamic coordinate system accurately determines the antenna attitude and the relative position of surrounding objects, and the array curvature matrix intuitively reflects array deformation, enabling more targeted adjustments.

[0046] Furthermore, the fine-tuning and compensation unit receives the real-time vibration spectrum output by the environmental perception module and queries the phase compensation value based on the vibration transfer function library. This allows the fine-tuning and compensation unit to accurately compensate for antenna performance changes caused by vibration, improving communication quality in vibrating environments. When the vehicle vibrates while driving, antenna performance can be adjusted promptly and accurately to ensure stable communication.

[0047] Furthermore, the pitch adjustment mechanism 105 includes a first support rod 106, a second support rod 107 and a drive unit 108. One end of the first support rod 106 and the second support rod 107 are hinged on the supporting plate 103, and the other end of the first support rod 106 and the second support rod 107 are hinged to the array mounting plate 102. The above-mentioned first support rod 106, the second support rod 107 and the array mounting plate 102 form a triangular stable structure. The drive unit 108 is connected to the first support rod 106 for driving the formed triangular stable structure to rotate. The drive unit 108 is connected to the control unit.

[0048] The drive unit 108 includes a telescopic rod, one end of which is hinged to the first support rod 106 and the other end is hinged to the support plate 103. The pitch adjustment mechanism 105 utilizes a triangular stabilizing structure, ensuring the stability of the array mounting plate 102 during pitch adjustment, preventing shaking or deformation, and improving the reliability of antenna attitude adjustment. During the adjustment process, the triangular structure can withstand significant external forces, ensuring that the array mounting plate 102 is stably adjusted to the desired angle. The drive unit 108 utilizes a telescopic rod with a simple and easy-to-control structure, capable of precisely adjusting the pitch angle of the array mounting plate 102. Under the control of the control unit, the length of the telescopic rod can be precisely controlled, thereby achieving precise adjustment of the pitch angle of the array mounting plate 102 and meeting the requirements for antenna attitude adjustment under different operating conditions.

[0049] Example 2:

[0050] This embodiment is further optimized based on embodiment 1. In this embodiment, the first support rod 106 and the second support rod 107 are both telescopic rods, specifically hydraulic telescopic rods, pneumatic telescopic rods or electric telescopic rods. In this embodiment, the first support rod 106 and the second support rod 107 are both electric telescopic rods.

[0051] In actual application, when the angle is adjusted, the angle of the array mounting plate 102 is further adjusted by adjusting the length or shortening of the first support rod 106 and the second support rod 107 .

[0052] In this embodiment, both the first support rod 106 and the second support rod 107 of the pitch adjustment mechanism 105 are electrically retractable rods, playing a key role in the actual angle adjustment process. When the compensation decision module of the control unit determines that the pitch angle of the array mounting plate 102 needs to be adjusted based on the vehicle operating status, surrounding environment information, and antenna performance requirements provided by the environmental perception module, it generates a corresponding control instruction and transmits it to the execution drive module.

[0053] After receiving the command, the execution drive module sends a drive signal to the electric telescopic rods of the first support rod 106 and the second support rod 107. The electric telescopic rods are equipped with components such as a motor, a transmission mechanism, and a screw-nut assembly. The motors start rotating in response to the drive signal, and the transmission mechanism transmits power to the screw-nut assembly. The screw-nut assembly converts the motor's rotational motion into linear motion, thereby extending or retracting the electric telescopic rods.

[0054] Because the first and second support rods 106 and 107 are hinged at one end to the carrier plate 103 and at the other end to the array mounting plate 102, they form a stable triangular structure with the array mounting plate 102. When the electrically operated telescopic rods of the first and second support rods 106 and 107 extend or contract, they push or pull the array mounting plate 102 about the hinge point, thereby adjusting the vertical angle of the array mounting plate 102. By precisely controlling the extension or contraction of the electrically operated telescopic rods, the pitch angle of the array mounting plate 102 can be precisely adjusted, allowing the vehicle-mounted multi-band array antenna to be properly aligned with the signal source, optimizing the antenna's signal reception and transmission performance.

[0055] During the adjustment process, the multi-sensor array continues to operate. The IMU sensor monitors the attitude changes of the array mounting plate 102 in real time, and the laser ranging grid detects the distance between the surrounding environment and the array mounting plate 102. This feedback data is then transmitted to the control unit. Based on this feedback, the control unit adjusts and optimizes the movement of the electric telescopic rod in real time to ensure that the array mounting plate 102 can be accurately and stably adjusted to the target angle.

[0056] The pitch adjustment mechanism 105 of traditional vehicle-mounted antennas often suffers from insufficient adjustment precision during angle adjustment, making it difficult to meet the precise antenna pointing requirements of modern vehicle-mounted communication systems. This device uses electric telescopic rods as the first support rod 106 and the second support rod 107. These rods precisely control the extension or contraction of the rods by accurately controlling the rotation angle and speed of the motors. Combined with real-time feedback from the multi-sensor array, the control unit can precisely adjust the angle of the array mounting plate 102, enabling the antenna to more accurately align with the signal source. This effectively improves the antenna's signal reception strength and communication quality, resolving the issue of poor signal quality caused by the low angle adjustment precision of traditional devices.

[0057] Some existing vehicle-mounted antenna adjustment mechanisms are prone to shaking and instability during adjustment, which not only affects the antenna's adjustment performance but can also cause damage. In this embodiment, the stable triangular structure formed by the first and second support rods 106, 107, and array mounting plate 102, combined with the stable telescopic action of the electric telescopic rod, effectively resists external interference during angle adjustment and maintains the stability of array mounting plate 102. Even if the vehicle encounters bumps or vibrations during driving, the electric telescopic rod, under the control of the control unit, can quickly adjust to maintain the stability of the triangular structure and prevent shaking of array mounting plate 102, thereby ensuring the stability and reliability of the antenna during adjustment and resolving the instability problem of traditional adjustment mechanisms.

[0058] Due to the complexity and changeability of the vehicle-mounted environment, different driving scenarios and communication needs require the antenna to have flexible angle adjustment capabilities. The traditional vehicle-mounted antenna adjustment mechanism has a single adjustment method and is difficult to quickly adapt to changes in complex environments. The electric telescopic rod of this device can be quickly and flexibly extended or shortened according to the instructions of the control unit, and can achieve a wide range of angle adjustment of the array mounting plate 102 in a short period of time. Whether the vehicle is frequently turning on urban roads or the antenna angle needs to be adjusted due to terrain changes on mountain roads, the electric telescopic rod can respond quickly, allowing the antenna to quickly adjust to the appropriate posture to meet the communication needs in different scenarios, greatly improving the flexibility and adaptability of the antenna angle adjustment.

[0059] Example 3:

[0060] This embodiment is further optimized based on Example 2. In this embodiment, the movable end of the first support rod 106 is hinged on a slider 109, and the slider 109 is interactively mounted on the array mounting plate 102. The slider 109 is connected to a first driving unit 110, and the first driving unit 110 is used to drive the slider 109 to slide on the array mounting plate 102, so that the angle formed by the first support rod 106 and the first support rod 106 can be adjusted.

[0061] The first driving unit 110 may specifically be an electric telescopic rod.

[0062] In this embodiment, the movable end of the first support rod 106 is hinged to a slider 109, which slides on the array mounting plate 102 and is driven by a first drive unit 110. When the control unit determines that the angle formed by the first support rod 106 and the second support rod 107 needs to be adjusted based on the vehicle's operating status, surrounding environment information, and antenna performance requirements collected by the environmental perception module, it sends a drive command to the first drive unit 110. Upon receiving the command, the first drive unit 110 begins operation, and its internal structure can be adapted to different design types. If the first drive unit 110 is electrically driven, it typically includes a motor and a transmission mechanism (such as a screw-nut pair or a rack-and-pinion mechanism). The motor operates in response to the drive signal, and the transmission mechanism converts the motor's rotational motion into linear motion of the slider 109, causing the slider 109 to slide in a specific direction on the array mounting plate 102.

[0063] As the slider 109 slides, the movable end of the first support rod 106 is hinged to the slider 109. The displacement of the slider 109 causes the first support rod 106 to rotate about the hinge point, thereby changing the angle between the first support rod 106 and the second support rod 107. Furthermore, because the first and second support rods 106, 107, and the array mounting plate 102 form a stable triangular structure, this change in angle further affects the posture of the array mounting plate 102.

[0064] During this process, the multi-sensor array continuously monitors relevant data in real time. The IMU sensor monitors changes in the array mounting plate 102's posture, while the laser ranging grid detects data such as the distance between the surrounding environment and the array mounting plate 102, feeding this information back to the control unit. Based on this feedback, the control unit adjusts and optimizes the drive parameters of the first drive unit 110 in real time, ensuring that the angle between the first support rod 106 and the second support rod 107 is accurately adjusted to the target angle. This, in turn, allows the array mounting plate 102 to achieve the desired posture, ensuring optimal operating conditions for the vehicle-mounted multi-band array antenna.

[0065] The pitch adjustment mechanism 105 of a traditional vehicle-mounted antenna has a fixed structure, and the adjustment range of the angle between the first and second support rods is limited, resulting in insufficient adjustment range of the antenna's posture in the vertical direction, making it difficult to adapt to complex and changing signal environments. This new solution drives the slider 109 to slide on the array mounting plate 102 through the first drive unit 110, which can flexibly change the angle formed by the first support rod 106 and the second support rod 107. This design greatly expands the range of antenna pitch adjustment, allowing the antenna to be adjusted to a larger angle in the vertical direction. For example, when the vehicle is in special terrain or the signal source is in a tricky position, the device can break through the limitations of the traditional adjustment range and allow the antenna to align with the signal source in a more appropriate posture, effectively solving the problem of insufficient adjustment range of traditional antennas and improving the adaptability of the antenna in complex environments.

[0066] Previous antenna adjustment mechanisms were difficult to achieve precise control when fine-tuning the angle, which affected the antenna's accurate reception and transmission of signals. In an embodiment, the first drive unit 110 can accurately control the sliding distance and speed of the slider 109 according to the precise instructions of the control unit, thereby accurately changing the angle between the first support rod 106 and the second support rod 107. In addition, combined with the real-time feedback data from the multi-sensor array, the control unit can continuously optimize the driving strategy of the first drive unit 110 to achieve high-precision fine-tuning of the antenna posture. For example, when it is necessary to make subtle adjustments to the antenna angle to enhance signal strength, this solution can accurately control the angle change so that the antenna is accurately aligned with the signal source, effectively solving the problem of insufficient accuracy of traditional adjustment methods and improving the signal reception and transmission quality of the antenna.

[0067] Traditional vehicle-mounted antenna adjustment mechanisms have a relatively fixed adjustment method and poor flexibility when faced with multiple angle adjustment requirements under different operating conditions. In this new solution, the first drive unit 110 can respond quickly to the instructions of the control unit, driving the slider 109 to slide rapidly, thereby achieving rapid adjustment of the angle between the first support rod 106 and the second support rod 107. Whether the vehicle needs to quickly adjust the antenna angle due to changes in the signal source during high-speed driving, or frequently changing the driving direction in a complex urban environment, resulting in changes in signal reception conditions, this solution can flexibly respond and quickly adjust the antenna posture to meet the diverse needs for antenna angle adjustment under different operating conditions. This greatly improves the flexibility and real-time performance of antenna adjustment and solves the problem of poor flexibility in traditional antenna adjustment.

[0068] Furthermore, in some preferred embodiments, a groove 111 is provided on the supporting plate 103 , and the lower end of the first support rod 106 is located in the groove 111 , thereby increasing the adjustment stroke of the first support rod 106 .

[0069] Furthermore, an annular track 101 is provided between the carrying plate 103 and the rotating platform 104 to support the carrying plate 103 .

[0070] Example 4:

[0071] This embodiment discloses an adjustment method based on the above-mentioned vehicle-mounted multi-band antenna array adaptive adjustment device, the method comprising the following steps:

[0072] Step 1: Initialize the system. The control unit starts the multi-sensor array, completes the self-test and clock synchronization of each sensor, and establishes the initial coordinate system. The rotating platform 104 and the pitch adjustment mechanism 105 are reset to their initial positions. The magnetorheological fluid damper, piezoelectric ceramic actuator, and MEMS micromirror array are in the initial working state.

[0073] Step 2: The multi-sensor array collects data in real time and transmits it to the environmental perception module: the IMU sensor collects real-time attitude information of the array mounting plate 102, including acceleration, angular velocity, and inclination data; the laser ranging grid collects distance data between the array mounting plate 102 and the surrounding environment in the form of a 20×20 dot matrix; the millimeter wave radar detects obstacles around the vehicle and its relative motion status; and the temperature and humidity sensor collects the temperature and humidity parameters of the antenna working environment.

[0074] Step 3: The environmental perception module integrates and processes the received data: it integrates the IMU sensor and millimeter-wave radar data, updates the dynamic coordinate system, and reflects the spatial position relationship between the vehicle and the antenna in real time; maps the laser ranging grid data into the array curvature matrix to quantitatively characterize the deformation state of the array mounting plate 102; and combines temperature and humidity parameters to establish an environmental impact factor model.

[0075] Step 4: The compensation decision module makes a decision based on the processing results output by the environmental perception module: the reinforcement learning decision unit generates the rotation angle control value of the rotating platform 104 and the coarse adjustment instructions of the pitch adjustment mechanism 105 based on the dynamic coordinate system and obstacle information; the fine-tuning compensation unit receives the real-time vibration spectrum and the array curvature matrix, queries the vibration transfer function library to obtain the phase compensation value, and generates the driving instructions of the piezoelectric ceramic actuator and the adjustment parameters of the MEMS micromirror array.

[0076] Step 5: The execution drive module drives each actuator according to the output instructions of the compensation decision module: it drives the rotating platform 104 to rotate to the target angle, while ensuring the stability of the electrical connection through the conductive slip ring; it controls the first support rod 106 and the second support rod 107 (electric telescopic rod) of the pitch adjustment mechanism 105 to extend and retract, adjusting the pitch angle of the array mounting plate 102; when a wider range of adjustment is required, it activates the first drive unit 110 to drive the slider 109 to slide, changing the angle between the first support rod 106 and the second support rod 107;

[0077] The magnetorheological fluid damper is controlled to adjust the damping force to suppress the vibration of the rotating platform 104; the 4×4 array of piezoelectric ceramic actuators is driven to act independently to compensate for the micro-deformation of the array mounting plate 102; the posture of the MEMS micromirror array is adjusted to optimize the electromagnetic wave radiation direction of the antenna array element.

[0078] Step 6: The multi-sensor array continuously collects the adjusted state data and feeds it back to the control unit to form a closed-loop control; the control unit repeats steps 3 to 5 according to the deviation between the feedback data and the target state until the antenna performance reaches the optimal state.

[0079] Step 7: When the vehicle is turned off or the antenna stops working, the system enters a dormant state, the rotating platform 104 and the pitch adjustment mechanism 105 are reset, and each actuator stops working, leaving only the necessary sensor monitoring functions.

[0080] This embodiment combines multi-sensor data fusion with multi-level adjustment to achieve full-range adaptive adjustment of the vehicle antenna, from coarse to fine tuning. A reinforcement learning decision unit dynamically optimizes the adjustment strategy based on complex environments, improving the antenna's adaptability to changing vehicle environments. A sophisticated compensation mechanism based on the vibration transfer function ensures communication stability despite vehicle vibration. Closed-loop feedback control ensures the antenna maintains optimal operating posture, effectively improving the quality and reliability of in-vehicle communications.

[0081] Furthermore, in step 4, the reinforcement learning decision unit adopts a deep reinforcement learning algorithm, takes the antenna communication quality index as the reward function, and updates the decision model by continuously interacting with the environment to achieve autonomous optimization of the adjustment strategy.

[0082] Furthermore, in step 5, the driving module controls the electric telescopic rod using a PID algorithm, and adjusts the driving current in real time according to the deviation between the target angle and the actual angle to ensure that the adjustment accuracy reaches ±0.1°.

[0083] Furthermore, the closed-loop control period in step 6 is dynamically adjusted according to the vehicle's driving state: when driving on urban roads, the control period is 100ms; when driving on highways, the control period is shortened to 50ms; when driving on bumpy roads, the control period is further shortened to 20ms to quickly respond to posture changes caused by vibration.

[0084] Furthermore, since the temperature and humidity sensor is only mounted on the surface of the array mounting plate 102, it is easy to fail when the vehicle wades through water. Therefore, in actual application, a fiber Bragg grating temperature and humidity sensor is embedded inside the array mounting plate 102, and its optical fiber line is led out through the rotor end of the conductive slip ring and connected to the control unit. When the surface temperature and humidity sensor detects that the humidity is greater than 90% RH, the fiber Bragg grating sensor is started to perform data verification. If the surface sensor fails, the fiber Bragg grating data is directly used (accuracy ±0.5% RH).

[0085] Furthermore, since the magnetorheological fluid damper is only connected to the rotating platform, the high-frequency vibration of the array is insufficiently suppressed. In actual applications, a parallel magnetorheological fluid damper group is added between the array mounting plate 102 and the carrier plate 103. The overall layout is cross-shaped, and each damper is independently connected to the execution drive module. The IMU sensor detects the angular acceleration of the array X / Y axis; if the angular acceleration is greater than 10rad / s², the reinforcement learning decision unit outputs a damping force distribution instruction, and the cross-shaped damper group applies differential damping force according to the quadrant, ranging from 0.5-5kN·s / m. After testing, the array resonance peak is reduced by 15dB, which is suitable for off-road sections.

[0086] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adaptive adjustment device for a vehicle-mounted multi-band antenna array, characterized by: It includes an adjustment unit, an array mounting plate, a carrier plate, a multi-sensor array and a control unit; The adjustment unit includes a rotating platform and a pitch adjustment mechanism. The rotating platform is connected to the carrier plate. The pitch adjustment mechanism is mounted on the carrier plate and connected to the array mounting plate. The rotating platform is used to be mounted on the vehicle base. The multi-sensor array includes IMU sensors embedded in the four corners of the array mounting plate, a laser ranging grid distributed on the back of the array mounting plate, a millimeter-wave radar installed on the central axis of the rotating platform, and temperature and humidity sensors mounted on the array mounting plate. The control unit includes an environmental perception module, a compensation decision module and an execution drive module. The environmental perception module is used to receive multi-sensor array data. The compensation decision module is connected to the environmental perception module. The input end of the execution drive module is connected to the compensation decision module, and the output end is connected to the mechanical adjustment unit.

2. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 1, characterized in that: A conductive slip ring is provided between the rotating platform and the vehicle-mounted base. The rotor end of the conductive slip ring is connected to the array mounting plate cable, and the stator end is connected to the control unit.

3. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 1, characterized in that: The laser ranging grid is arranged in a 20×20 dot matrix, and the multi-sensor array achieves clock synchronization through the WhiteRabbit protocol.

4. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 1, characterized in that: The rotating platform is rigidly connected to a magnetorheological fluid damper, a piezoelectric ceramic actuator is arranged on the back of the array mounting plate, a MEMS micromirror array is arranged on the surface of the antenna array element of the array mounting plate, and the magnetorheological fluid damper, piezoelectric ceramic actuator and MEMS micromirror array are connected to a control unit.

5. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 4, characterized in that: The compensation decision module includes a reinforcement learning decision unit and a fine-tuning compensation unit. The reinforcement learning decision unit generates the control quantity of the rotating platform and the adjustment unit, and the fine-tuning compensation unit is used to output driving instructions for the piezoelectric ceramic actuator and the MEMS micromirror array.

6. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 4, characterized in that: The piezoelectric ceramic actuators are arranged in a 4×4 array, and each actuator is independently connected to the execution drive module.

7. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 4, characterized in that: The environmental perception module is used to fuse the IMU sensor and millimeter-wave radar data to build a dynamic coordinate system and map the laser ranging grid data into a front curvature matrix.

8. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 5, characterized in that: The fine-tuning compensation unit receives the real-time vibration spectrum output by the environmental perception module and queries the phase compensation amount based on the vibration transfer function library.

9. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to any one of claims 1 to 8, characterized in that: The pitch adjustment mechanism includes a first support rod, a second support rod and a drive unit. One end of the first support rod and the second support rod is hinged on the supporting plate, and the other end of the first support rod and the second support rod is hinged to the array mounting plate. The above-mentioned first support rod, the second support rod and the array mounting plate form a triangular stable structure. The drive unit is connected to the first support rod and is used to drive the formed triangular stable structure to rotate. The drive unit is connected to the control unit.

10. The adaptive adjustment device for a vehicle-mounted multi-band antenna array according to claim 9, characterized in that: The driving unit comprises a telescopic rod, one end of which is hinged to the first support rod, and the other end of which is hinged to the bearing plate.

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