CN110598359A - A 3D Modeling System for Aircraft Structure Maintenance - Google Patents

Abstract

The invention relates to a 3D modeling system for aircraft structure maintenance, which comprises a data acquisition module, a data processing module and a three-dimensional modeling module which are sequentially connected, wherein the data acquisition module comprises an aircraft structure data acquisition unit and a power device data acquisition unit, the aircraft structure data acquisition unit comprises an unmanned aerial vehicle provided with a camera and a laser scanner, the power device data acquisition unit comprises a three-dimensional laser scanner and a shooting camera, and each data acquisition unit is respectively provided with a corresponding data processor. Compared with the prior art, the invention has the advantages of maximally utilizing the value of the fleet, reducing the workload of maintenance personnel and engineering personnel, lowering the cost and the like.

Description

A 3D Modeling System for Aircraft Structure Maintenance

technical field

The invention relates to the field of aircraft maintenance and engineering management, in particular to a 3D modeling system for aircraft structure maintenance.

Background technique

In recent years, the visual management of aircraft structure maintenance programs is a trend in the civil aviation industry. Internationally, Airbus has developed and designed the Repair Manager system (upgraded to 3D Repair system) to solve the visual maintenance and engineering management of aircraft, and Boeing has also developed the Toolbox Structures maintenance plan visual management system. The systems of Airbus and Boeing are maintenance visualization management systems independently developed by aircraft manufacturers using aircraft design data. They are relatively mature management tools. The systems are not open source, and airlines can purchase and use the manufacturers' systems for online maintenance. Management works, but is expensive to use.

With the rapid development of the domestic civil aviation industry, the size of the fleets owned by various airlines has gradually expanded, and the maintenance tasks undertaken by them have also gradually increased. How to maximize the value of the fleet and establish a system that reduces maintenance personnel and The structural maintenance plan system with low engineering workload, low cost and high model accuracy has become the top priority of every aviation company.

Contents of the invention

The object of the present invention is to provide a 3D modeling system for aircraft structure maintenance in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A 3D modeling system for aircraft structure maintenance, comprising a data acquisition module, a data processing module, and a three-dimensional modeling module connected in sequence, the data acquisition module comprising an aircraft structure data acquisition unit and a power plant data acquisition unit, the The aircraft structure data acquisition unit includes a drone equipped with a camera and a laser scanner, the power plant data acquisition unit includes a three-dimensional laser scanner and a camera, and each data acquisition unit is respectively equipped with a corresponding data processor.

The collection points of the drone in the aircraft structure data collection unit include aircraft fuselage, wings, windows, doors and stabilizers.

There are multiple sets of power plant data acquisition units, and each set of power plant data acquisition units is arranged on the outer contour of the hanger, the engine, and the power plant connector.

The data processing module includes an aircraft structure image data processor connected with the camera of the drone, an aircraft structure point cloud data processor connected with the laser scanner of the drone, and a power unit image data processor connected with the shooting camera The device and the point cloud data processor of the power unit connected with the 3D laser scanner.

Described three-dimensional modeling module comprises two three-dimensional modeling servers and a model synthesis server, one three-dimensional modeling server connects aircraft structure image data processor, aircraft structure point cloud data processor, another three-dimensional modeling server Connect the image data processor of the power unit and the point cloud data processor of the power unit, and connect the two 3D modeling servers to the model synthesis server. Each 3D modeling server is equipped with CAD+CATIA modeling tools, the model synthesis server is equipped with CAD+CATIA modeling tools and 3DVIA Composer software, and the 3DVIA Player utility program corresponding to 3DVIA Composer can be set in the mobile terminal.

Preferably, the system further includes a cloud server and a mobile terminal, the output end of the model synthesis server is connected to the cloud server, and the cloud server is connected to the mobile terminal.

Preferably, the mobile terminals include PCs, smart phones, and tablet computers.

The workflow of the system of the present invention is:

1) Data collection:

Manipulate the drone, scan the fuselage, wings, windows, doors, and stabilizer of the aircraft with laser, obtain point cloud data, and use the camera to take images of each scanning place;

Set multiple power unit data acquisition units at the outer contours of the hanger, engine, and power unit connectors, use a 3D laser scanner to scan each part of the entity to obtain entity point cloud data, and the first camera simultaneously takes pictures to obtain image data ;

2) Data processing and modeling:

The data processor connected to each acquisition unit preprocesses the acquired data, and combines the image data to generate a three-dimensional virtual model of the aircraft structure and a three-dimensional virtual model of the power plant;

3) Model synthesis:

The model synthesis server synthesizes the two virtual models to obtain the 3D virtual model of the whole machine, and uses 3DVIA Composer to create document content for real-time display, sharing and management of mobile terminals.

Step 2) specifically includes the following:

1) Establishment of 3D virtual model of aircraft structure:

The obtained aircraft structure image data and point cloud data are sent to the aircraft structure image data processor, aircraft structure point cloud data processor, and the aircraft structure point cloud data processor preprocesses the point cloud data to generate a complete full-color point cloud model And sent to the CAD+CATIA modeling tool in the 3D modeling server, the CAD+CATIA modeling tool repairs the loopholes of each point cloud model surface in the full-color point cloud model, generates a 3D solid model, and combines the various data acquired by the camera The image data of the component is processed by line texture mapping to obtain the final 3D virtual model of the aircraft structure;

2) Establishment of 3D virtual model of power plant:

The 3D laser scanner sends point cloud data to the point cloud data processor of the power plant, and the point cloud data processor of the power plant preprocesses the point cloud data to generate a complete full-color point cloud model and send it to the CAD in the 3D modeling server +CATIA modeling tool, CAD+CATIA modeling tool repairs the loopholes of each point cloud model surface in the full-color point cloud model, generates a three-dimensional solid model, and combines the image obtained by the first shooting camera for texture mapping processing to obtain the final 3D virtual model of the power plant.

Compared with the prior art, the present invention has the following advantages:

1. The present invention is provided with an aircraft structure data acquisition unit and a power unit data acquisition unit for aircraft structure and aircraft power unit modeling data acquisition, and the collected modeling data is sent to a corresponding three-dimensional modeling server for three-dimensional modeling, which can Maximize fleet value utilization;

2. UAVs and 3D laser scanners are used as acquisition tools for aircraft 3D geometric data. The cost is low, and the desired 3D model of the aircraft for maintenance can be obtained without expensive maintenance plan management tools, reducing maintenance personnel and engineering. The workload of personnel overcomes the limitation that the existing technology can only use the system developed by the aircraft manufacturer;

3. The present invention uses two three-dimensional modeling servers to model the aircraft structure and aircraft power plant respectively, and synthesizes them through the model synthesis server, so that specific data acquisition and subsequent analysis can be carried out for each detail, which is beneficial to the aircraft The details of each place are displayed in detail to provide an accurate data basis for effective aircraft maintenance;

4. The aircraft structure data acquisition unit and the power plant data acquisition unit of the present invention are respectively provided with a corresponding camera and a shooting camera, combined with the image data acquired, can further acquire a realistic three-dimensional virtual model, improve the accuracy of the acquired model, reduce Fleet delays and stoppages due to structural damage;

5. The three-dimensional virtual model obtained by the present invention is connected to the cloud server, and the cloud server is connected to the mobile terminal, and the obtained synthetic three-dimensional solid model can be displayed, shared and managed in real time, which brings convenience to the digital management of aircraft maintenance.

Description of drawings

Fig. 1 is the structural representation of the system of the present invention;

Fig. 2 is a schematic flow chart of the system of the present invention;

The numbers in the figure indicate:

1. UAV, 2. 3D laser scanner, 3. Shooting camera, 4. Aircraft structure point cloud data processor, 5. Aircraft structure image data processor, 6. Power device point cloud data processor, 7. Power Device image data processor, 8. 3D modeling server, 9. model synthesis server, 10. cloud server, 11. mobile terminal, 12. aircraft.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Example

The invention relates to a 3D modeling system for aircraft structure maintenance, comprising a data acquisition module, a data processing module, a three-dimensional modeling module, a cloud server and a mobile terminal.

The data acquisition module includes an aircraft structure data acquisition unit and a power unit data acquisition unit.

The aircraft structure data acquisition unit includes a UAV 1 with a camera and a laser scanner. The UAV 1 is provided with a wireless communication module. point cloud data and image data.

The data acquisition unit of the power plant is provided with multiple groups, and each group includes a three-dimensional laser scanner 2, a shooting camera 3 and a controller, and the controller is connected to the three-dimensional laser scanner 2 and the shooting camera 3 respectively. Each group of power plant data acquisition units is set at the outer contours of hangers, engines, and aircraft-related connectors, and is used to collect solid point cloud data and image data of the outer contours of hangers, engines, and related connectors.

The data processing module includes an aircraft structure image data processor 5 , an aircraft structure point cloud data processor 4 , a power unit image data processor 7 , and a power unit point cloud data processor 6 . The camera on the drone 1 is connected with the aircraft structure image data processor 5 through a wireless communication module, and the laser scanner on the drone is connected with the aircraft point cloud data processor 6 through a wireless communication module. The output end of the three-dimensional laser scanner 2 of the power device acquisition unit is connected to the input end of the power device point cloud data processor 6 , and the photographing camera 3 is connected to the power device image data processor 7 .

The three-dimensional modeling module includes two three-dimensional modeling servers 8, one three-dimensional modeling server 8 is connected with the aircraft structure image data processor 5 and the aircraft structure point cloud data processor 4, one three-dimensional modeling server is connected with the power plant image data The processor 7 and the power unit point cloud data processor 6 are connected. Each three-dimensional modeling server 8 is respectively equipped with CAD+CATIA modeling tools.

The two 3D modeling servers 8 are jointly connected to the model synthesis server 9 for synthesizing the 3D models detected respectively. The model synthesis server 9 is provided with CAD+CATIA modeling tools and 3DVIA Composer software. The output end of the model synthesis server 9 is connected to the cloud server 10, and the cloud server 10 is connected to the mobile terminal 11 for real-time display, sharing and management of the acquired synthetic 3D solid model.

The mobile terminal 11 includes a PC, a smart phone, and a tablet computer, and can view and use the obtained synthetic three-dimensional solid model in real time. Preferably, a 3DVIA Player utility program corresponding to 3DVIA Composer can be set in the mobile terminal for viewing.

The workflow of the system of the present invention is:

1. Data collection steps.

1. Acquisition of aircraft structure data:

Manipulate the drone, scan the aircraft's fuselage, wings, windows, doors, and stabilizers with lasers, and use the camera to capture images of each scanning location. When operating a drone, it is necessary to enable the camera and laser scanner of the drone to obtain point cloud data and image data of the following structure:

1.1 Fuselage

The results of the model of the aircraft fuselage section should include the display of the line shape of the entire aircraft fuselage and the modeling and display of related fuselage structures;

Decompose the fuselage of the whole machine into: the nose, the front section of the fuselage, the middle section of the fuselage, the rear section of the fuselage and the tail of the fuselage. The modeling data structure source of each fuselage section shall at least include: fuselage skin, girders, bulkheads, cabin floor structure (including floor beams, floor longitudinal beams, support bars) and cargo floor beam structure;

The modeling data structure source of the aircraft nose also includes the aircraft radome; the modeling data structure source of the middle section of the fuselage also includes the modeling of the keel beam.

1.2) Wing

The results of the aircraft wing model should include the display of the wing airfoil, as well as the modeling and display of flaps, slats, spoilers, ailerons, wingtips, and wing ribs.

1.3) Windows

The modeling data structure sources of this part mainly include: cockpit windows and cabin windows.

1.4) Door

The modeling data structure sources of aircraft door cabin include: cockpit door, passenger cabin door, cargo cabin door, emergency cabin door, landing gear cabin door, electronic cabin door, aircraft service door, etc.

1.5) Stabilizer

The data structure sources of aircraft stabilizer modeling mainly include: horizontal stabilizer, elevator, vertical stabilizer, rudder and related structural ribs.

2. Power plant data collection:

Multiple power plant data acquisition units are placed on the outer contours of the hanger, engine, and aircraft-related connectors. The three-dimensional laser scanner scans the entities of each part of the aircraft power plant to obtain solid point cloud data. The first camera simultaneously scans the power plant Each part is photographed to obtain image data. The power plant acquisition unit needs to complete the data collection of the hanger, the engine and the outer contours of related connecting parts to meet the needs of the aircraft model display. Its internal structure can be recaptured later if refinement is required.

2. Data processing and 3D modeling steps.

2.1 Three-dimensional virtual model of aircraft structure:

The obtained aircraft structure image data and point cloud data are sent to the aircraft structure image data processor and aircraft structure point cloud data processor; the aircraft structure point cloud data processor is used to preprocess the point cloud data, combined with aircraft related manuals and drawings Data, generate a complete full-color point cloud model and send it to the CAD+CATIA modeling tool in the 3D modeling server. The CAD+CATIA modeling tool is used to repair the loopholes of each point cloud model surface in the full-color point cloud model and generate a 3D solid model. Combining the pictures of each component captured by the camera, using software for texture mapping processing, a realistic three-dimensional virtual model of the aircraft structure can be further obtained.

2.2 Three-dimensional virtual model of power plant:

The 3D laser scanner is sent to the power unit point cloud data processor; the power unit point cloud data processor is used to preprocess the point cloud data, combined with aircraft-related manuals and drawings, to generate a complete full-color point cloud model and send it to The CAD+CATIA modeling tool in the 3D modeling server; the CAD+CATIA modeling tool is used to repair the loopholes of each point cloud model surface in the full-color point cloud model and generate a 3D solid model. Cooperating with the image acquired by the first shooting camera, using software for texture mapping processing, a realistic three-dimensional virtual model of the power plant can be further obtained.

2.3 Model Synthesis

The two modeling servers respectively send the obtained 3D virtual model of the aircraft structure and the 3D virtual model of the power plant to the model synthesis server. 3DVIA Composer software creates document content that makes the resulting 3D model lightweight and better convey information. The content of this document can be sent to the mobile terminal through the cloud server for real-time display, sharing and management, which facilitates the formulation of subsequent repair plans, access to structural airworthiness documents, structural modification management, etc., and brings convenience to the digital management of aircraft maintenance.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any worker familiar with the technical field can easily think of various equivalents within the technical scope disclosed in the present invention. Modifications or replacements shall all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. The utility model provides a 3D modeling system for aircraft structure maintenance, its characterized in that, is including the data acquisition module, data processing module, the three-dimensional modeling module that connect gradually, data acquisition module include aircraft structure data acquisition unit and power device data acquisition unit, aircraft structure data acquisition unit including the unmanned aerial vehicle that is equipped with camera and laser scanner, power device data acquisition unit include three-dimensional laser scanner and shoot the camera, each data acquisition unit is equipped with corresponding data processor respectively.

2. The 3D modeling system for aircraft structural repairs of claim 1, wherein said acquisition points of the drone of the aircraft structural data acquisition unit include aircraft fuselage, wings, windows, doors, and stabilizers.

3. The 3D modeling system for aircraft structural repair of claim 1, wherein there are multiple sets of powerplant data acquisition units, each set of powerplant data acquisition units being located at an outer profile of a pylon, an engine, and a powerplant attachment.

4. The 3D modeling system for aircraft structural repair of claim 1, wherein the data processing module comprises an aircraft structural image data processor connected to the camera of the UAV, an aircraft structural point cloud data processor connected to the laser scanner of the UAV, a power plant image data processor connected to the camera, and a power plant point cloud data processor connected to the three-dimensional laser scanner.

5. The 3D modeling system for aircraft structure maintenance according to claim 4, wherein the three-dimensional modeling module comprises two three-dimensional modeling servers and a model synthesis server, one three-dimensional modeling server is connected with the aircraft structure image data processor and the aircraft structure point cloud data processor, the other three-dimensional modeling server is connected with the power device image data processor and the power device point cloud data processor, and the two three-dimensional modeling servers are connected with the model synthesis server together.

6. The 3D modeling system for aircraft structural maintenance according to claim 5, further comprising a cloud server and a mobile terminal, wherein the output end of the model composition server is connected to the cloud server, and the cloud server is connected to the mobile terminal.

7. The 3D modeling system for aircraft structural repairs of claim 6, wherein the mobile terminal comprises a PC, a smart phone, or a tablet PC.

8. The 3D modeling system for aircraft structural repair of claim 7, wherein each three-dimensional modeling server is provided with a CAD + CATIA modeling tool, the model synthesis server is provided with a CAD + CATIA modeling tool and 3DVIA Composer software, and the mobile terminal is provided with a 3DVIA Player utility corresponding to the 3DVIA Composer.

9. A 3D modelling system for aircraft structural repair according to claim 8, wherein the system has a workflow of:

1) data acquisition:

controlling an unmanned aerial vehicle, carrying out laser scanning on a fuselage, wings, windows, doors and a stabilizing surface of the airplane to obtain point cloud data, and shooting images of all scanning positions by using a camera;

arranging a plurality of power device data acquisition units at the outer contours of a hanger, an engine and a power device connecting piece, scanning each part of entity by using a three-dimensional laser scanner to obtain entity point cloud data, and simultaneously photographing by using a first photographing camera to obtain image data;

2) data processing and modeling:

the data processor connected with each acquisition unit preprocesses the acquired data and generates an airplane structure three-dimensional virtual model and a power device three-dimensional virtual model by combining the image data;

3) model synthesis:

and the model synthesis server synthesizes the two virtual models to obtain a three-dimensional virtual model of the whole machine, and creates document contents by using the 3DVIA Composer for real-time display, sharing and management of the mobile terminal.

10. A 3D modelling system for aircraft structural repair according to claim 9, wherein step 2) comprises in particular the following:

1) establishing a three-dimensional virtual model of an airplane structure:

the acquired airplane structure image data and point cloud data are sent to an airplane structure image data processor and an airplane structure point cloud data processor, the airplane structure point cloud data processor preprocesses the point cloud data to generate a complete full-color point cloud model and sends the full-color point cloud model to a CAD + CATIA modeling tool in a three-dimensional modeling server, the CAD + CATIA modeling tool repairs the loopholes of each point cloud model molded surface in the full-color point cloud model to generate a three-dimensional solid model, texture mapping processing is carried out by combining the image data of each component acquired by a camera to acquire a final airplane structure three-dimensional virtual model;

2) establishing a three-dimensional virtual model of the power device:

the method comprises the steps that a three-dimensional laser scanner sends point cloud data to a power device point cloud data processor, the power device point cloud data processor carries out pretreatment on the point cloud data, a complete full-color point cloud model is generated and sent to a CAD + CATIA modeling tool in a three-dimensional modeling server, the CAD + CATIA modeling tool repairs leaks of cloud model molded surfaces of all points in the full-color point cloud model, a three-dimensional entity model is generated, texture mapping processing is carried out by combining images obtained by a first shooting camera, and a final three-dimensional virtual model of the power device is obtained.