System and method for rapidly monitoring levelness of ultra-large-diameter loop antenna

Abstract

The invention discloses a system for rapidly monitoring the levelness of an ultra-large aperture loop antenna. The system comprises a servo rotation levelness rapid monitor, a plurality of high-precision horizontal reflectors, a multi-channel controller and a bracket, the servo rotation levelness rapid monitor comprises a one-dimensional horizontal turntable and an electronic level gauge; the high-precision horizontal reflector is mounted at the node of the antenna truss; the servo rotation levelness rapid monitor is positioned at the bottom of the central position of the antenna ring; the multi-channel controller is respectively connected with the one-dimensional horizontal turntable, the electronic level gauge and the upper computer; the support is used for supporting the servo rotation levelness rapid monitor. The reflector installed at the lower end of the vertical rod of the antenna truss is automatically rotated and scanned under angle path planning, automatic height measurement is carried out through image recognition, the levelness of the antenna truss is analyzed, the adjustment amount of each node is given, a traditional manual measurement mode is completely replaced, and the measurement efficiency is improved. The problems of heavy levelness test task and long development period of the existing ultra-large-diameter loop antenna can be effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of antenna mechanical measurement technology, and relates to a rapid monitoring system and method for the levelness of an ultra-large aperture loop antenna. Background Technology

[0002] The levelness test and adjustment of the deployment truss of a spaceborne ultra-large aperture loop antenna is one of the main procedures in the process of adjusting the accuracy of the loop antenna profile, and it is a key link to ensure the antenna profile adjustment index. The traditional levelness test method is as follows: after the loop antenna is deployed, a mm steel ruler is attached at the same position on all hinges at the lower end of the deployment truss as a reference ruler. A leveled electronic theodolite is placed at the center of the bottom of the loop antenna. The relative height of all nodes is tested by manually aiming at the steel ruler point by point and manually rotating the antenna. The levelness test results are manually recorded and analyzed, and then the levelness is adjusted.

[0003] However, this levelness testing method has the following shortcomings: (1) Each reflector needs to undergo dozens of deployment tests. Each deployment test requires several tests and adjustments. Each test requires measuring all measuring points one by one, and then adjusting them again based on the measurement results. Since the measurement results are not very helpful for real-time guidance of the adjustment process, the points need to be measured again after adjustment. This process is repeated. Generally, one measurement and calculation takes 1 hour, and the entire measurement and adjustment process takes 2 to 3 hours, which is extremely inefficient. (2) The levelness testing process mainly relies on operators to manually measure, manually read the theodolite aiming data and record it. It is time-consuming, inefficient, and has poor data consistency. Human resources are scarce and the development cycle is long. Testing levelness requires a lot of manpower and time costs. At the same time, resources such as theodolites are limited and coordination is difficult, which affects the length of the process and further extends the product delivery cycle.

[0004] Therefore, there is an urgent need for a high-efficiency, ultra-large aperture loop antenna leveling rapid monitoring system and method. Summary of the Invention The purpose of this invention is to propose a rapid monitoring system and method for the levelness of ultra-large aperture loop antennas, so as to solve the problems of heavy workload and long development cycle in the current levelness testing of ultra-large aperture loop antennas.

[0005] To achieve the above objectives, the present invention employs the following technical solution: On one hand, this invention provides a rapid leveling monitoring system for ultra-large aperture loop antennas, including a servo-rotating rapid leveling monitor, multiple high-precision level reflectors, a multi-channel controller, and a support frame; wherein: The servo-rotating levelness rapid monitoring instrument includes a one-dimensional horizontal turntable and an electronic level mounted on the one-dimensional horizontal turntable. The one-dimensional horizontal turntable is used to drive the electronic level to rotate in the horizontal plane, and the electronic level is used to continuously scan and measure the levelness during the rotation. The multiple high-precision horizontal reflectors are all barcode rulers and are installed at the antenna truss nodes respectively. The servo rotation level rapid monitoring instrument is located at the bottom of the center of the annular space. The high-precision horizontal reflectors are used to image in the field of view of the electronic level during its rotation, and the electronic level converts the image data into readable height values. The multi-channel controller is connected to the one-dimensional horizontal turntable, the electronic level, and the host computer via cables; the multi-channel controller is used to realize data and command communication between the level, the one-dimensional horizontal turntable, and the host computer. The bracket is used to support the servo-driven rotational level monitoring instrument.

[0006] On the other hand, the present invention provides a method for rapid monitoring of the levelness of an ultra-large aperture loop antenna. Based on the above-mentioned rapid monitoring system for the levelness of an ultra-large aperture loop antenna of the present invention, the method includes the following steps: Step 1: After the antenna truss is fully extended and stationary, the servo rotation level rapid monitoring instrument is mounted on the center of the antenna using a bracket. The level rapid monitoring instrument is installed and the centering laser is turned on. The mounting position is adjusted to be in the center of the antenna according to the centering laser. The circular level of the electronic level is leveled, and the various parts of the test system of this invention are connected. Step 2: Install the horizontal mirror reflector at the antenna truss node, making sure the zero mark of the horizontal mirror reflector is aligned with the root of the node. Install the horizontal mirror reflector at all measurement points on the antenna truss and keep it plumb. Step 3: Mark the positions of all truss structure measuring points, take the position of any node as the initial zero point, and use the software to automatically set the angle interval position to plan the angle path for subsequent automatic measurement. Step 4: The multi-channel controller controls the rotation of the one-dimensional horizontal turntable of the servo rotating level rapid monitoring instrument according to the planned angle path, thereby driving the electronic level to rotate. During the rotation, the electronic level continuously scans and images the horizontal mirror reflector, and the automatic measurement begins. Step 5: The high-precision horizontal reflector installed at the antenna truss node is imaged in its field of view by the electronic level during rotation. The electronic level converts the image data into readable values, automatically measures the height through image recognition, and saves the height value. Then, the height value is sent to the multi-channel controller in real time. The multi-channel controller analyzes the levelness of the antenna truss based on the height value of each point according to the pre-loaded conventional software.

[0007] Step 6: Take the first point as the initial zero point, calculate the adjustment amount for each point based on the initial height measurement value and the subsequent measurement values ​​of other points, and save it. Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The system of this invention consists of a servo-driven rotating levelness rapid monitoring instrument, a high-precision level reflector, a multi-channel controller, cables, a precision bracket, and a display device. Under angle path planning, the servo-driven rotating levelness rapid monitoring instrument automatically rotates and scans the high-precision level reflector installed at the lower end of the antenna truss vertical rod. Through image recognition, it automatically measures and saves the height, automatically analyzes the levelness of the antenna truss, and realizes automated scanning measurement of the levelness of ultra-large aperture loop antennas. It can also provide the adjustment amount of each node in report and graphical form, replacing the repetitive manual measurement method of rotating theodolite, manually aiming, manually reading, manually recording, and manually calculating. This reduces labor costs, improves testing efficiency, and enhances product quality.

[0008] (2) This invention covers the processes of data acquisition, data transmission, and data visualization, forming a closed loop of perception-analysis-feedback in the levelness test process. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the connection of the ultra-large aperture loop antenna level rapid monitoring system of the present invention; Figure 2 The system automatically displays the results of on-site tests for rapid levelness monitoring in real time. Detailed Implementation

[0010] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0011] The present invention provides a rapid monitoring system for the levelness of an ultra-large aperture loop antenna, such as... Figure 1 As shown, it includes a servo-driven rotational levelness rapid monitoring instrument, multiple high-precision level reflectors, a multi-channel controller, a support frame, and a display device. Among them: The servo-driven rotating levelness rapid monitoring instrument includes a one-dimensional leveling turntable and an electronic level mounted on the turntable. The turntable drives the electronic level to rotate in the horizontal plane, and the electronic level continuously scans and measures the levelness during rotation. Specifically, the electronic level uses a serial port connection for communication, meeting the measurement transmission distance requirements, with a measurement elevation error ≤0.03mm and a single measurement time ≤2s.

[0012] Multiple high-precision horizontal reflectors, each employing a barcode scale, are installed at the antenna truss nodes (the antenna truss is a circular structure composed of multiple vertical rods connected together, with each connection point being a truss node). A servo-rotating levelness rapid monitoring instrument is located at the bottom center of the antenna truss circular space. The high-precision horizontal reflectors are used to image within the field of view of the electronic level during its rotation. The electronic level then converts the image data into readable height values ​​to achieve accurate elevation measurement. Indium steel high-precision scales are preferred.

[0013] The multi-channel controller is connected to the one-dimensional leveling stage, the electronic level, and the host computer via cables. The multi-channel controller enables data and command communication between the level, the one-dimensional leveling stage, and the host computer. Preferably, the multi-channel controller is an Ethernet-to-RS232 converter, which uses a network communication protocol for data communication and offers advantages such as good stability, long network cable length, and good compatibility with the host computer. Preferably, the cable length is ≥20m.

[0014] The bracket adopts an industrial measuring tripod to support the servo-rotating level rapid monitoring instrument to ensure its stability. Its load capacity is ≥15kg, which meets the weight requirements of the level measuring instrument.

[0015] The display device is connected to the host computer. The display device is a screen used to display the monitoring results.

[0016] The above technical solution can completely replace the traditional measurement method of manually rotating the theodolite, manually aiming, manually reading, manually recording, and manually calculating.

[0017] The method for rapid monitoring of the levelness of an ultra-large aperture loop antenna provided in this invention includes the following steps: Step 1: After the antenna truss is fully extended and stationary, the servo rotation level rapid monitoring instrument is mounted on a tripod at the center of the antenna. The level rapid monitoring instrument is installed and the centering laser is turned on. The mounting position is adjusted to be in the center of the antenna according to the centering laser. The circular level of the electronic level is leveled and the various parts of the test system of this invention are connected. Step 2: Install the horizontal mirror reflector to the antenna truss node (preferably by adhesive bonding), ensuring that the zero mark (yellow edge) of the horizontal mirror reflector is aligned with the root of the node. Install the horizontal mirror reflector at all measuring points on the antenna truss and keep it plumb. Step 3: Mark the positions of all truss structure measuring points, take the position of any node as the initial zero point, and use the software to automatically set the angle interval position to plan the angle path for subsequent automatic measurement. Step 4: The multi-channel controller controls the rotation of the one-dimensional horizontal turntable of the servo rotating level rapid monitoring instrument according to the planned angle path, thereby driving the electronic level to rotate. During the rotation, the electronic level continuously scans and images the horizontal mirror reflector, and the automatic measurement begins. Step 5: The high-precision horizontal reflector installed at the antenna truss node is imaged in its field of view by the electronic level during rotation. The electronic level converts the image data into readable values, automatically measures the height through image recognition, and saves the height value. Then, the height value is sent to the multi-channel controller in real time. The multi-channel controller analyzes the levelness of the antenna truss based on the height value of each point according to the pre-loaded conventional software.

[0018] Step 6: Take the first point as the initial zero point, and calculate the adjustment amount (±c) for each point according to ba=±c (unit mm) based on the initial height measurement value (a) and the subsequent measurement values ​​of other points (b), and save it. Preferably, the method further includes the following steps: Step 7: The operator draws a diagram of the antenna adjustment simulation and provides the adjustment amount at each node location (i.e., the point) in the form of a report and diagrams, such as... Figure 2 As shown. The antenna level and trend are adjusted, and the system automatically updates the adjustment amount during the unloading adjustment process.

[0019] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A rapid monitoring system for the levelness of an ultra-large aperture loop antenna, characterized in that, Includes a servo-driven rotational level monitoring instrument, multiple high-precision level reflectors, a multi-channel controller, and a support frame; among which: The servo-rotating levelness rapid monitoring instrument includes a one-dimensional horizontal turntable and an electronic level mounted on the one-dimensional horizontal turntable. The one-dimensional horizontal turntable is used to drive the electronic level to rotate in the horizontal plane, and the electronic level is used to continuously scan and measure the levelness during the rotation. The multiple high-precision horizontal reflectors are all barcode rulers and are installed at the antenna truss nodes respectively. The servo rotation level rapid monitoring instrument is located at the bottom of the center of the annular space. The high-precision horizontal reflectors are used to image in the field of view of the electronic level during its rotation, and the electronic level converts the image data into readable height values. The multi-channel controller is connected to the one-dimensional horizontal turntable, the electronic level, and the host computer, respectively; the multi-channel controller is used to realize data and command communication between the level, the one-dimensional horizontal turntable, and the host computer. The bracket is used to support the servo-driven rotational level monitoring instrument.

2. The rapid leveling system for ultra-large aperture loop antennas as described in claim 1, characterized in that, The high-precision horizontal reflector uses an indium steel high-precision ruler.

3. The rapid leveling system for ultra-large aperture loop antennas as described in claim 1, characterized in that, The multi-channel controller is a network port to RS232 converter.

4. The rapid leveling system for ultra-large aperture loop antennas as described in any one of claims 1, characterized in that, The support is an industrial measuring tripod.

5. The rapid leveling system for ultra-large aperture loop antennas as described in claims 1-4, characterized in that, It also includes a display device that connects to a host computer to display the monitoring results.

6. A method for rapid monitoring of the levelness of an ultra-large aperture loop antenna, based on the rapid monitoring system for the levelness of an ultra-large aperture loop antenna according to any one of claims 1 to 5, characterized in that, Includes the following steps: Step 1: After the antenna truss is fully extended and stationary, the servo rotation level rapid monitoring instrument is mounted on the center of the antenna using a bracket. The level rapid monitoring instrument is installed and the centering laser is turned on. The mounting position is adjusted to be in the center of the antenna according to the centering laser. The circular level of the electronic level is leveled, and the various parts of the test system of this invention are connected. Step 2: Install the horizontal mirror reflector at the antenna truss node, making sure the zero mark of the horizontal mirror reflector is aligned with the root of the node. Install the horizontal mirror reflector at all measurement points on the antenna truss and keep it plumb. Step 3: Mark the positions of all truss structure measuring points, take the position of any node as the initial zero point, and use the software to automatically set the angle interval position to plan the angle path for subsequent automatic measurement. Step 4: The multi-channel controller controls the rotation of the one-dimensional horizontal turntable of the servo rotating level rapid monitoring instrument according to the planned angle path, thereby driving the electronic level to rotate. During the rotation, the electronic level continuously scans and images the horizontal mirror reflector, and the automatic measurement begins. Step 5: The high-precision horizontal reflector installed at the antenna truss node is imaged in its field of view by the electronic level during rotation. The electronic level converts the image data into readable values, automatically measures the height through image recognition and saves the height value. Then, the height value is sent to the multi-channel controller in real time. The multi-channel controller analyzes the levelness of the antenna truss based on the height value of each point according to the pre-loaded conventional software. Step 6: Take the first point as the initial zero point, calculate the adjustment amount for each point based on the initial height measurement value and the subsequent measurement values ​​of other points, and save it.

7. The method for rapid monitoring of the horizontality of an ultra-large aperture loop antenna as described in claim 6, characterized in that, It also includes step 7, which illustrates the antenna adjustment simulation diagram and provides the adjustment amount at each node position in the form of reports and diagrams.

8. The method for rapid monitoring of the levelness of an ultra-large aperture loop antenna as described in claim 6, characterized in that, It also includes step 8, which adjusts the antenna according to the adjustment amount.

9. The method for rapid monitoring of the horizontality of an ultra-large aperture loop antenna as described in claim 6, characterized in that, In step 2, the horizontal mirror reflector is attached and installed at the antenna truss node.

10. The method for rapid monitoring of the levelness of an ultra-large aperture loop antenna as described in claim 6, characterized in that, In step 6, the adjustment amount for each point is calculated according to ba=±c, where a is the initial height measurement value, b is the measurement value of other points later, and ±c is the adjustment amount for the corresponding point.

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