CN110598359A - 3D modeling system for aircraft structure maintenance - Google Patents
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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
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
In recent years, visual management of aircraft structural repair solutions has been a trend presented by the civil aviation industry. Internationally, a passenger company develops and designs a Repair Manager system (upgraded to a 3D Repair system) for visual Repair and engineering management of an aircraft, and a boeing company also develops and designs a Toolbox structure Repair scheme visual management system. The air passenger and boeing system is a maintenance visual management system developed by aircraft manufacturers independently by using the data of aircraft design, is a mature management tool, is not open source, and can be purchased by airlines to perform online maintenance management work by using the systems of the manufacturers, but the use cost is too high.
Along with the rapid development of the domestic civil aviation industry, the sizes of the fleets owned by all airlines are gradually enlarged, the borne maintenance tasks are gradually increased, the value of the fleets is utilized to the maximum extent, and the establishment of a structural maintenance scheme system which reduces the workload of maintenance personnel and engineering personnel, is low in cost and has high model accuracy degree becomes the most important factor of all the noble airlines.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned shortcomings of the prior art and providing a 3D modeling system for aircraft structural repair.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a 3D modeling system for aircraft structure maintenance, 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.
The unmanned aerial vehicle acquisition points of the aircraft structure data acquisition unit comprise an aircraft body, wings, windows, doors and a stabilizing surface.
The power device data acquisition units are provided with a plurality of groups, and each group of power device data acquisition units are arranged at the outer contour of the hanger, the engine and the power device connecting piece.
The data processing module comprises an aircraft structure image data processor connected with a camera of the unmanned aerial vehicle, an aircraft structure point cloud data processor connected with a laser scanner of the unmanned aerial vehicle, a power device image data processor connected with a shooting camera and a power device point cloud data processor connected with a three-dimensional laser scanner.
The three-dimensional modeling module comprises two three-dimensional modeling servers and a model synthesis server, wherein one three-dimensional modeling server is connected with the airplane structure image data processor and the airplane 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. Each three-dimensional modeling server is respectively provided with a CAD + CATIA modeling tool, the model synthesis server is internally provided with a CAD + CATIA modeling tool and 3DVIA Composer software, and the mobile terminal can be internally provided with a 3DVIA Player utility program corresponding to the 3DVIA Composer.
Preferably, the system further comprises a cloud server and a mobile terminal, wherein the output end of the model synthesis server is connected with the cloud server, and the cloud server is connected with the mobile terminal.
Preferably, the mobile terminal includes a PC, a smart phone, and a tablet computer.
The system of the invention has the following working procedures:
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.
The step 2) specifically comprises the following steps:
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.
Compared with the prior art, the invention has the following advantages:
1. the invention is provided with an airplane structure data acquisition unit and a power device data acquisition unit for acquiring modeling data of an airplane structure and an airplane power device, and the acquired modeling data is sent to a corresponding three-dimensional modeling server for three-dimensional modeling, so that the value utilization of an airplane fleet can be maximized;
2. the unmanned aerial vehicle and the three-dimensional laser scanner are used as acquisition tools of three-dimensional geometric data of the airplane, the cost is low, the airplane three-dimensional model for maintenance can be acquired without expensive maintenance scheme management tools, the workload of maintenance personnel and engineering personnel is reduced, and the limitation that the prior art can only utilize a system developed by an airplane manufacturer is overcome;
3. according to the invention, the two three-dimensional modeling servers are used for respectively modeling the aircraft structure and the aircraft power device, and the model synthesis servers are used for synthesizing, so that specific data acquisition and subsequent analysis can be carried out on details of each place, the details of each place of the aircraft can be displayed in detail, and an accurate data base is provided for effective aircraft maintenance;
4. the aircraft structure data acquisition unit and the power device data acquisition unit are respectively provided with the corresponding cameras and the shooting cameras, and the vivid three-dimensional virtual model can be further acquired by combining the acquired image data, so that the accuracy of the acquired model is improved, and delay and stopping fields of a fleet caused by structure damage are reduced;
5. the three-dimensional virtual model obtained by the invention is connected with the cloud server, and the cloud server is connected with the mobile terminal, so that the obtained synthetic three-dimensional entity model can be displayed, shared and managed in real time, and convenience is brought to the digital management of aircraft maintenance.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic flow diagram of the system of the present invention;
the reference numbers in the figures indicate:
1. unmanned aerial vehicle, 2, three-dimensional laser scanner, 3, shoot the 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, three-dimensional modeling server, 9, model synthesis server, 10, high in the clouds server, 11, mobile terminal, 12, aircraft.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
The invention relates to a 3D modeling system for aircraft structure maintenance, which comprises a data acquisition module, a data processing module, a three-dimensional modeling module, a cloud server and a mobile terminal.
The data acquisition module comprises an airplane structure data acquisition unit and a power device data acquisition unit.
The aircraft structure data acquisition unit is equipped with wireless communication module including unmanned aerial vehicle 1 that has camera and laser scanner on unmanned aerial vehicle 1, acquires point cloud data and image data including aircraft fuselage, wing, window, door, stabilizer through controlling unmanned aerial vehicle.
The power device data acquisition unit is provided with the multiunit, and each group includes three-dimensional laser scanner 2, shoots camera 3 and controller, and the controller is connected with three-dimensional laser scanner 2, shooting camera 3 respectively. Each group of power device data acquisition units are arranged at the outer contours of the related connecting pieces of the hanger, the engine and the airplane and are used for acquiring entity point cloud data and image data of the outer contours of the hanger, the engine and the related connecting pieces.
The data processing module comprises an airplane structure image data processor 5, an airplane structure point cloud data processor 4, a power device image data processor 7 and a power device point cloud data processor 6. The camera on the unmanned aerial vehicle 1 is connected with the aircraft structure image data processor 5 through a wireless communication module, and the laser scanner on the unmanned aerial vehicle 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 with the input end of the power device point cloud data processor 6, and the shooting camera 3 is connected with the power device image data processor 7.
The three-dimensional modeling module comprises 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, and the other three-dimensional modeling server is connected with the power device image data processor 7 and the power device point cloud data processor 6. Each three-dimensional modeling server 8 is provided with a CAD + CATIA modeling tool.
The two three-dimensional modeling servers 8 are commonly connected with a model synthesis server 9 and used for synthesizing the three-dimensional models detected respectively, and a CAD + CATIA modeling tool and 3DVIA Composer software are arranged in the model synthesis server 9. The output end of the model synthesis server 9 is connected with a cloud server 10, and the cloud server 10 is connected with a mobile terminal 11, and is used for displaying, sharing and managing the acquired synthetic three-dimensional solid model in real time.
The mobile terminal 11 includes a PC, a smart phone, and a tablet computer, and can view and use the acquired synthetic three-dimensional solid model in real time. Preferably, a 3DVIA Player utility corresponding to the 3DVIA Composer may be provided in the mobile terminal for viewing.
The system of the invention has the following working procedures:
firstly, data acquisition.
1. Acquiring airplane structure data:
and controlling the unmanned aerial vehicle to perform laser scanning on the body, wings, windows, doors and stabilizing surfaces of the airplane and shoot images of all scanning positions by using the camera. When controlling unmanned aerial vehicle, need to make unmanned aerial vehicle's camera and laser scanner can obtain the point cloud data and the image data of following structure:
1.1 fuselage
The model achievement of the airplane body section comprises the linear display of the whole airplane body and the modeling and display of the related airplane body structure;
the machine body of the whole machine is divided into: the aircraft nose, fuselage anterior segment, fuselage middle section, fuselage back end and tail. The source of the modeling data structure for each fuselage section should at least comprise: fuselage skin, stringers, bulkheads, cabin floor structures (including floor beams, floor stringers, support bars), and cargo compartment floor beam structures;
the modeling data structure source of the aircraft nose further comprises an aircraft radome; the source of the modeling data structure for the mid-fuselage section also includes modeling of the keel beam.
1.2) wings
The aircraft wing model achievement comprises the display of wing airfoil profile, and the modeling and display of flap, slat, spoiler, aileron, wingtip and wing rib.
1.3) Window
The modeling data structure source of the part mainly comprises: cockpit windows, passenger cabin windows.
1.4) door
Sources of modeling data structures for aircraft door cabins include: cockpit doors, passenger cabin doors, cargo cabin doors, emergency cabin doors, landing gear cabin doors, electronic cabin doors, aircraft service doors, and the like.
1.5) Amylum Tritici testa
The sources of the aircraft stabilizer modeling data structure mainly comprise: horizontal stabilizers, elevators, vertical stabilizers, rudders, and related structural ribs.
2. Acquiring data of a power device:
the method comprises the steps that a plurality of power device data acquisition units are arranged at the outer contours of a hanging bracket, an engine and a relevant connecting piece of an airplane, a three-dimensional laser scanner scans entities of all parts of the airplane power device to obtain entity point cloud data, and a first shooting camera shoots all parts of the power device at the same time to obtain image data. The power device acquisition unit needs to complete data collection of the outer contours of the hanger, the engine and the related connecting pieces so as to meet the requirement of displaying the complete airplane model. If refinement is required, the internal structure can then be re-acquired.
And secondly, processing data and carrying out three-dimensional modeling.
2.1 three-dimensional virtual model of airplane structure:
the acquired airplane structure image data and the acquired point cloud data are sent to an airplane structure image data processor and an airplane structure point cloud data processor; the aircraft structure point cloud data processor is used for preprocessing point cloud data, generating a complete full-color point cloud model by combining an aircraft related handbook and drawing data, and sending the full-color point cloud model to a CAD + CATIA modeling tool in the three-dimensional modeling server. And the CAD + CATIA modeling tool is used for repairing the loopholes of the cloud model molded surfaces of all points in the full-color point cloud model to generate a three-dimensional entity model. And combining the pictures of all components acquired by the camera, and performing texture mapping processing by using software to further acquire a vivid three-dimensional virtual model of the airplane structure.
2.2 three-dimensional virtual model of the power device:
the three-dimensional laser scanner sends the point cloud data to a power device point cloud data processor; the power device point cloud data processor is used for preprocessing point cloud data, generating a complete full-color point cloud model by combining an airplane related handbook and drawing data and sending the full-color point cloud model to a CAD (computer-aided design and computer aided three-dimensional interactive application) modeling tool in the three-dimensional modeling server; and the CAD + CATIA modeling tool is used for repairing the loopholes of the cloud model molded surfaces of all points in the full-color point cloud model to generate a three-dimensional entity model. And the image acquired by the first shooting camera is matched, and the texture mapping processing is carried out by using software, so that a vivid three-dimensional virtual model of the power device can be further acquired.
2.3 model Synthesis
The two modeling servers respectively send the obtained three-dimensional virtual model of the airplane structure and the three-dimensional virtual model of the power device to the model synthesis server, the model synthesis server assembles the two three-dimensional virtual models into a whole machine model through a CAD + CATIA modeling tool, and document content is created by using 3DVIA Composer software, so that the obtained 3D model is light and can better convey information. The document content can be sent to the mobile terminal through the cloud server to be displayed, shared and managed in real time, the subsequent repair scheme can be made conveniently, the structure airworthiness file can be called, the structure is modified and managed, and convenience is brought to digital management of airplane maintenance.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to 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.
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| CN113593014A (en) * | 2021-07-23 | 2021-11-02 | 浙江原心网络科技有限公司 | Three-dimensional scanning modeling system in unknown space based on multi-axis aircraft |
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