An electromagnetic simulation method and system based on a working scene of a boom type engineering machine

Abstract

The application discloses an electromagnetic simulation method and system based on an arm support type engineering machine working scene, and aims at a simulated electromagnetic environment working scene, which comprises a corresponding metal structured model shell; electromagnetic interference signals in the simulated electromagnetic environment working scene are collected; feature extraction is performed according to the electromagnetic interference signals to determine electromagnetic interference source parameters; in the simulated electromagnetic environment working scene, the posture of the arm support type engineering machine is adjusted to a set posture; the electromagnetic interference source parameters are sent to an interference source terminal so that the interference source terminal emits an interference source determined by the electromagnetic interference source parameters to a specified position of the arm support type engineering machine; electromagnetic field data in the simulated electromagnetic environment working scene after the arm support type engineering machine receives the electromagnetic interference source are collected to perform simulation effect evaluation. The application can improve the electromagnetic anti-interference capability of the arm support type engineering machine through electromagnetic simulation analysis.

Description

Technical Field

[0001] This invention relates to electromagnetic simulation methods, specifically to electromagnetic simulation methods and systems based on boom-type engineering machinery operation scenarios, and belongs to the field of electromagnetic simulation technology for engineering machinery. Background Technology

[0002] Currently, electromagnetic simulation during the product design phase has become an essential step in product development to support forward design. In particular, with the introduction of a series of national mandatory standards for electromagnetic compatibility, electromagnetic compatibility simulation technology is being widely used to ensure that products can pass certification smoothly.

[0003] However, due to the diversity of operating scenarios for construction machinery, its working conditions are complex, resulting in various electromagnetic interference problems. Simulation and certification in standard laboratories alone often cannot solve the electromagnetic problems in some special scenarios, especially in places with harsh electromagnetic environments. In addition, when boom-type construction machinery is tested in the laboratory, the boom is generally in a horizontal working state. However, in actual operation, the boom will extend to different angles. The metal boom will generate a certain antenna effect, thereby introducing new sources of interference. Therefore, how to ensure the electromagnetic anti-interference capability of boom-type construction machinery under different operating scenarios is an urgent problem to be solved. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides a simulation method and system based on boom-type construction machinery operation scenarios. This method can perform electromagnetic simulation analysis by constructing typical operation scenarios for boom-type construction machinery and combining the machinery's operating posture.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution.

[0006] In a first aspect, the present invention provides an electromagnetic simulation method based on the operation scenario of boom-type engineering machinery, comprising: a simulated electromagnetic environment operation scenario model, a signal acquisition terminal, an interference source terminal, and a simulation computer terminal; wherein the signal acquisition terminal and the interference source terminal are both connected to the simulation computer terminal;

[0007] The simulated electromagnetic environment working scenario model is used to simulate the real working scenario of boom-type engineering machinery, including the metal structured model shell corresponding to the scenario.

[0008] The signal acquisition terminal is used to acquire electromagnetic interference signals in the simulated electromagnetic environment working scenario model and send them to the simulation computer terminal.

[0009] The simulation computer terminal is used to extract features based on electromagnetic interference signals to determine electromagnetic interference source parameters; in a simulated electromagnetic environment working scenario, adjust the attitude of the boom-type engineering machinery to a set attitude; and send the electromagnetic interference source parameters to the interference source terminal so that the interference source terminal can emit an interference source determined by the electromagnetic interference source parameters to a designated position of the boom-type engineering machinery.

[0010] The signal acquisition terminal is also used to collect electromagnetic field data in the simulated electromagnetic environment working scenario after the boom-type engineering machinery receives the electromagnetic interference source, and send it to the simulation computer terminal for simulation effect evaluation.

[0011] Furthermore, the simulation computer terminal includes a boom posture module, which is used to parametrically design the posture of the boom based on the typical working mode of boom-type engineering machinery.

[0012] Furthermore, the boom-type engineering machinery includes boom-type fire trucks and pump trucks.

[0013] Furthermore, the typical electromagnetic operating scenarios for boom-type fire trucks include shopping mall building scenarios and industrial environment scenarios; the typical electromagnetic operating scenario for pump trucks is construction sites.

[0014] Furthermore, the boom-type engineering machinery also includes boom-type cranes.

[0015] Furthermore, typical workplaces for boom cranes are high-voltage lines, wind turbines, power stations, and power plants.

[0016] Furthermore, the signal acquisition terminal is located directly in front of and on both sides of the cab of the boom-type construction machinery.

[0017] Secondly, the present invention also provides an electromagnetic simulation method based on the operation scenario of boom-type engineering machinery, including: for the constructed simulated electromagnetic environment operation scenario, the simulated electromagnetic environment operation scenario is used to simulate the real operation scenario of boom-type engineering machinery, including the corresponding metal structured model shell;

[0018] Collect electromagnetic interference signals in a simulated electromagnetic environment working scenario; extract features from the electromagnetic interference signals to determine the electromagnetic interference source parameters; adjust the attitude of the boom-type engineering machinery to a set attitude in the simulated electromagnetic environment working scenario.

[0019] The electromagnetic interference source parameters are sent to the interference source terminal so that the interference source terminal emits an interference source determined by the electromagnetic interference source parameters to a designated position of the boom-type construction machinery; after the boom-type construction machinery receives the electromagnetic interference source, electromagnetic field data in the simulated electromagnetic environment working scenario are collected, and the simulation effect is evaluated.

[0020] Furthermore, the collected electromagnetic field data is compared with historical measurement data. If the simulation accuracy meets the requirements, the electromagnetic interference source parameters and the corresponding electromagnetic environment working scenario are saved in the database.

[0021] Furthermore, electromagnetic interference signals were collected from the front and sides of the cab of the boom-type construction machinery to simulate the electromagnetic environment working scenario model.

[0022] The beneficial technical effects achieved by this invention are as follows:

[0023] This invention improves the electromagnetic anti-interference capability of boom-type construction machinery by setting up the environment of typical operating scenarios, introducing electromagnetic data sources collected on site, and combining the working posture of the machinery under different operating conditions to conduct electromagnetic simulation analysis. Attached Figure Description

[0024] Figure 1 A schematic diagram of an electromagnetic simulation system based on a work scenario provided in an embodiment of the present invention;

[0025] Figure 2 This is a diagram showing the on-site data acquisition of a high-voltage line according to an embodiment of the present invention;

[0026] Figure 3 A flowchart of the electromagnetic simulation method provided for the implementation of this invention;

[0027] Figure 4 The flowchart of the simulation module in the electromagnetic simulation method provided for the implementation of this invention is shown. Detailed Implementation

[0028] The specific implementation method of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example 1

[0030] An electromagnetic simulation system based on the operation scenarios of boom-type construction machinery, such as Figure 1 As shown, Figure 1 This invention patent presents an electromagnetic simulation system diagram based on a work scenario, comprising: a simulated electromagnetic environment work scenario model, a signal acquisition terminal, an interference source terminal, and a simulation computer terminal; the signal acquisition terminal and the interference source terminal are both connected to the simulation computer terminal.

[0031] Electromagnetic environment working scenarios are typical scenarios for boom-type engineering machinery.

[0032] The signal acquisition terminal collects data in typical operating scenarios of boom-type working machinery;

[0033] The simulation computer terminal also includes a boom attitude module, which is used to model the different attitude structures of the boom under different working conditions of the crane.

[0034] The chosen scenario is a typical electromagnetic environment, which refers to locations with severe electromagnetic conditions typical of boom-type construction machinery or locations where electromagnetic interference has occurred. A model structure affecting electromagnetic resonance was constructed within this scenario.

[0035] A signal acquisition terminal is used to collect data on the electromagnetic environment in typical scenarios. The signal acquisition terminal includes a signal analyzer and receiving antennas for different frequency bands, and sends the acquired signals to a simulation computer terminal.

[0036] The simulated computer terminal processes the acquired signals and then uses them as excitations to introduce them into the interference source terminal.

[0037] Boom-type engineering machinery modules refer to the posture of machinery operation under typical working conditions, especially the operating posture of the boom.

[0038] The following example illustrates electromagnetic interference occurring during crane operation in a typical high-voltage power line scenario, combined with... Figure 1 , Figure 2 , Figure 3 , Figure 4 This will further elaborate on the implementation and application of the solution.

[0039] When a crane operates in the electromagnetic environment of a high-voltage line and electromagnetic interference occurs, electromagnetic field data at the site is collected using a signal acquisition terminal. Since the crane's sensitive devices are concentrated in the cab, the data acquisition positions are arranged in front of the cab and on the left and right sides. During simulation, interference sources at each position are introduced for simulation analysis. Figure 2 Data collection information for a certain high-voltage power line.

[0040] Since high-voltage power line locations are generally in relatively open areas, the high-voltage power line buildings are used as the main scene for electromagnetic environment work scenario modeling. Their structural parameters, location parameters and other relevant information are reconstructed in 3D modeling, and the parameters are editable. When electromagnetic interference occurs in high-voltage power line locations of different levels, the relevant parameters can be directly edited, avoiding the complicated process of remodeling.

[0041] The signal acquisition terminal is used to collect electromagnetic environment data at construction sites where electromagnetic interference occurs. It uses specialized electromagnetic data acquisition equipment to collect data at different locations on the construction machinery, based on the structure and performance characteristics of the electrical system.

[0042] The boom attitude module determines the attitude mode of the crane when electromagnetic interference occurs in a high-voltage line environment, and the boom attitude is parametrically edited to facilitate the adjustment of different pitch angles to adapt to different working conditions.

[0043] After building the required electromagnetic environment working scenario model, introducing data sources and boom-type engineering machinery models, electromagnetic simulation of engineering machinery under typical electromagnetic environments is carried out.

[0044] The specific simulation process is as follows: Figure 3 As shown:

[0045] First, confirm the simulation task, select an appropriate electromagnetic environment working scene model based on the simulation task, define the boundary and other relevant parameters of the scene model, and perform mesh generation and processing on the scene model according to the simulation task.

[0046] Based on the simulation task, the crane is preprocessed by mesh generation, the processed model is imported, and relevant parameters such as model position and boom pitch angle are defined.

[0047] Import the interference sources to be loaded from the database as excitations, set the position, direction and other relevant parameters of the excitations, select the appropriate simulation algorithm and convergence requirements, and perform electromagnetic immunity simulation.

[0048] Furthermore, the fidelity of the simulation data is evaluated, and the feasibility of each module being permanently installed is assessed. According to... Figure 4 The process involves first comparing and analyzing the simulation data with the test data to determine whether the simulation system can meet the task requirements. If it can, the model and data are solidified and placed in various libraries. If the deviation is large, optimization is carried out from three aspects: scene model, data acquisition, and vehicle model processing, until the simulation data is accurate.

[0049] This invention provides an electromagnetic simulation method and system based on boom-type construction machinery operation scenarios. It can perform simulation analysis of the electromagnetic environment under different operation scenarios of boom-type construction machinery. Through the modular processing of scenario model library, interference source database and vehicle model, it can quickly and efficiently simulate the electromagnetic anti-interference capability of vehicles under different scenarios, ensuring the electromagnetic anti-interference capability of products under different scenarios during the design stage.

[0050] This invention requires an evaluation of the realism of the simulation data to assess whether each module can be solidified. First, the simulation data is compared and analyzed with the test data to determine whether the construction of the simulation system can meet the task requirements. If so, the simulation model and data are solidified and placed in various libraries. If the deviation is large, optimization is carried out from three aspects: scene model, data acquisition, and boom posture model processing, until the simulation data is accurate.

[0051] Example 2

[0052] Corresponding to the electromagnetic simulation system based on boom-type construction machinery operation scenarios provided in the above embodiments, this embodiment provides an electromagnetic simulation method based on boom-type construction machinery operation scenarios, including: for a constructed simulated electromagnetic environment operation scenario, the simulated electromagnetic environment operation scenario is used to simulate real boom-type construction machinery operation scenarios, including a corresponding metal structured model shell;

[0053] Collect electromagnetic interference signals in a simulated electromagnetic environment working scenario; extract features from the electromagnetic interference signals to determine the electromagnetic interference source parameters; adjust the attitude of the boom-type engineering machinery to a set attitude in the simulated electromagnetic environment working scenario.

[0054] The electromagnetic interference source parameters are sent to the interference source terminal so that the interference source terminal emits an interference source determined by the electromagnetic interference source parameters to a designated position of the boom-type construction machinery; after the boom-type construction machinery receives the electromagnetic interference source, electromagnetic field data in the simulated electromagnetic environment working scenario are collected to evaluate the simulation effect.

[0055] The scenarios selected in the embodiments mainly come from the following two aspects: First, the typical electromagnetic environment working scenarios of different boom-type engineering machinery are screened and defined. For example, the typical electromagnetic working scenarios of boom-type fire trucks are: shopping mall buildings, industrial environments, etc.; the typical electromagnetic working scenarios of pump trucks are: construction sites; the typical working scenarios of boom-type cranes are: high-voltage lines, fans, power stations, power plants, etc.; Second, the working scenarios in which boom-type engineering machinery has experienced electromagnetic interference can be used as key electromagnetic interference analysis scenarios.

[0056] Data solidification requires a specific evaluation process to avoid simulation distortion or resource waste due to excessive data volume. After the scene model and mechanical model are preprocessed, interference source data is loaded as stimulation, and corresponding simulation analysis is performed according to the simulation process. The simulation analysis results are compared with the field test data. If the requirements are met, the model and data can be solidified in each module; otherwise, further optimization processing of the scene model, mechanical model, and collected data is required until the requirements are met.

[0057] This invention builds models for typical operating scenarios of different boom-type construction machinery, collects data on the electromagnetic environment under these scenarios, processes the collected data signals and uses them as interference sources for simulation analysis, and applies them to the construction machinery. By further combining the posture of the mechanical boom during construction operations, electromagnetic simulation analysis can be performed under different operating scenarios and conditions to simulate the electromagnetic anti-interference capability of boom-type construction machinery under "real" conditions.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electromagnetic simulation system based on boom-type engineering machinery operation scenarios, characterized in that, include: The system includes a simulated electromagnetic environment working scenario model, a signal acquisition terminal, an interference source terminal, and a simulation computer terminal; both the signal acquisition terminal and the interference source terminal are connected to the simulation computer terminal. The simulated electromagnetic environment working scenario model is used to simulate the real working scenario of boom-type engineering machinery, including the metal structured model shell corresponding to the scenario. The signal acquisition terminal is used to acquire electromagnetic interference signals in the simulated electromagnetic environment working scenario model and send them to the simulation computer terminal. The simulation computer terminal is used to extract features based on electromagnetic interference signals to determine electromagnetic interference source parameters; in a simulated electromagnetic environment working scenario, adjust the attitude of the boom-type engineering machinery to a set attitude; and send the electromagnetic interference source parameters to the interference source terminal so that the interference source terminal can emit an interference source determined by the electromagnetic interference source parameters to a designated position of the boom-type engineering machinery. The signal acquisition terminal is also used to collect electromagnetic field data in the simulated electromagnetic environment working scenario after the boom-type engineering machinery receives the electromagnetic interference source, and send it to the simulation computer terminal for simulation effect evaluation.

2. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 1, characterized in that, The simulation computer terminal includes a boom posture module, which is used to parametrically design the boom posture according to the typical working mode of boom-type engineering machinery.

3. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 1, characterized in that, The boom-type engineering machinery includes boom-type fire trucks and pump trucks.

4. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 3, characterized in that, Typical electromagnetic operating scenarios for boom-type fire trucks include shopping mall building scenarios and industrial environments; typical electromagnetic operating scenarios for pump trucks are construction sites.

5. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 3, characterized in that, The boom-type construction machinery also includes boom-type cranes.

6. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 5, characterized in that, Typical workplaces for boom cranes are high-voltage lines, wind turbines, power stations, and power plants.

7. The electromagnetic simulation system based on the operation scenario of boom-type engineering machinery according to claim 1, characterized in that, The signal acquisition terminal is located directly in front of and on both sides of the cab of the boom-type construction machinery.

8. An electromagnetic simulation method based on boom-type engineering machinery operation scenarios, characterized in that, Includes: a constructed simulated electromagnetic environment working scenario, which is used to simulate the actual operation scenario of boom-type engineering machinery, including the corresponding metal structured model shell; Collect electromagnetic interference signals in a simulated electromagnetic environment working scenario; extract features from the electromagnetic interference signals to determine the electromagnetic interference source parameters; adjust the attitude of the boom-type engineering machinery to a set attitude in the simulated electromagnetic environment working scenario. The electromagnetic interference source parameters are sent to the interference source terminal so that the interference source terminal emits an interference source determined by the electromagnetic interference source parameters to a designated position of the boom-type construction machinery; after the boom-type construction machinery receives the electromagnetic interference source, electromagnetic field data in the simulated electromagnetic environment working scenario are collected to evaluate the simulation effect.

9. The electromagnetic simulation method based on the operation scenario of boom-type engineering machinery according to claim 8, characterized in that, The collected electromagnetic field data is compared with historical measurement data. If the simulation accuracy meets the requirements, the electromagnetic interference source parameters and the corresponding electromagnetic environment working scenario are saved in the database.

10. The electromagnetic simulation method based on the operation scenario of boom-type engineering machinery as described in claim 8, characterized in that, Electromagnetic interference signals were collected from the front and sides of the cab of boom-type construction machinery to simulate electromagnetic environment working scenario models.

Images