DE102008043445A1 - Digital three dimensional data model providing system for e.g. airplane part, has photogrammetric unit detecting changes made to component for generating digital three dimensional change data model - Google Patents

Abstract

The system has identification elements e.g. measuring marks (2a-2c), coding mark (3) and reference measuring rod (4), provided at modification positions of a component e.g. electric cable (1) and pipeline (R), and a camera for recording the component at the modification positions from different points of view for generating a digital image. A photogrammetric unit detects changes made to the component for generating a digital three dimensional change data model. A digital three dimensional data model of the component is updated automatically based on the three dimensional change data model. An independent claim is also included for a method for providing a digital three dimensional data model of a component.

Description

The The invention relates to a system and method for providing a digital three-dimensional data model of a component, in particular a Aircraft component.

Aircrafts consist of a variety of components, which according to plans and Construction documents are mounted in the fuselage. Examples of such Components are pipelines or electrical wiring in the Fuselage of the aircraft to be installed. In the assembly of such components, it may happen that a fitter of the specification of the construction document must differ. Represents, for example, the fitter during the laying of an electrical line, that this electrical If a pipeline or a carrier crosses, the electrical Line around the already laid pipeline or the carrier around be moved and thus deviates from the original routing requirement from. This change process leads to a change message DQN (Design Query Note), which is in a digital three-dimensional Model of the object is incorporated.

1 shows the conventional procedure for providing a digital three-dimensional data model in a component, in particular in an aircraft component.

In A database is a digital three - dimensional model of a Object, for example, an aircraft filed, which also is called DMU (Digital Mock Up). For this digital Model are derived two-dimensional construction documents, for example Views of the component to be laid on paper for each Fitter. Based on these construction documents, in addition to technical drawings also textual versions or Can contain instructions For example, an installer moves a duct inside the fuselage. Must the fitter in the execution the laying of cables from the building underlay of the object or the Specification deviates, a change message DQN is generated, the change made to document. This amendment or complaint message BM is created manually and to the Handover Development Department or Design Office (DO), which or proposed solution of the employee or the fitter checks. The complaint message BM or the proposed amendment DQN can be next to changes in the technical drawings and textual notes or written Details also photographs of the department of change contain. In the process, complex changes often involve a large number created from photographs.

If the development engineers or technicians in the Design Office find that the proposed change effectively corrects the error or deviation that has occurred, the change is incorporated into the existing three-dimensional digital model. In the case of a complaint message BM, the development engineers themselves design changes and incorporate them into the three-dimensional model, as in 1 shown. In turn, two-dimensional construction documents can be derived from the modified three-dimensional model.

In the 1 However, the conventional procedure shown has some significant disadvantages. The on-site, for example, when installing a line, created change suggestions DQN have a two-dimensional data format and are object-related. The incorporation of further design solutions in the three-dimensional model and the derivation of the construction documents, in particular the drawings will be made later by the Design Office, or by the development department. Within this period, the actual component state or assembly state is in a more advanced stage than the defined desired state of the three-dimensional data model. This involves various risks. The obsolete DMU or the no longer current three-dimensional model of the object and derived outdated building material sentence complicates the assessment and the elimination of other technical complaints, since for a correct assessment of the procedure of further necessary changes already existing not yet incorporated Amendments or complaints should be considered.

Another disadvantage of in 1 The conventional approach shown is that there is a media break between the two-dimensional correction proposals or change messages and the three-dimensional data model of the respective object. The change reports or complaints filed on site, some of which also contain photographs, must be manually incorporated into the three-dimensional data model after being checked by a technician. If an error occurs during the input or incorporation, this input error or this incorrect correction of the data model can in turn embarrass further errors that may possibly be detected at a later time during assembly and in turn lead to new change messages or complaint messages. The manual input of the necessary changes in the three-dimensional model is thus not only time consuming, but in turn susceptible to errors.

Another disadvantage of in 1 dargestell The conventional approach is that in the presence of complaint messages BM or proposed changes, which may contain a number of photographs in part, these are difficult to interpret by the technicians of the design office or the development department, so that queries may be necessary.

It Therefore, an object of the present invention is a system and a method of providing a digital three-dimensional Data model of a component to create the necessary changes incorporated into the data model in a simple and secure way can be.

These The object is achieved by a System solved by the features specified in claim 1.

The The invention provides a system for providing a digital three-dimensional Data model of a component, with changes to the component be made by photogrammetry for the generation of digital three-dimensional change data models captured by the digital three-dimensional data model of the component is updated automatically.

The inventive system offers the advantage that no media break between two-dimensional Photographs and three-dimensional data models are present and thus changes automatically updated and made error-free.

at an embodiment of the system according to the invention are at every change agency of the Component marking elements provided.

at an embodiment of the system according to the invention At least one camera is provided, which with marking elements provided component at the respective point of change of different Viewpoints from for the production of digital images photographically receives.

These Photo camera can be a conventional portable be digital camera for that the respective employee, for example, the fitter in a simple Can be operated, or a high-resolution calibratable photo camera.

at a possible embodiment The digital images generated by the camera are over a Transmit radio interface to a computer.

at a possible embodiment of the system according to the invention On the one hand, the marking elements have measuring marks on the component attached on the other hand coding marks for linking the different digital pictures. In addition, the Markers include reference scales.

at an embodiment of the system according to the invention a calculation unit is provided, which on the component provided measuring marks in the digital images taken automatically recorded and calculated their spatial coordinates.

at an embodiment of the system according to the invention calculates the calculation unit from the calculated space coordinates the acquired measurement marks a digital three-dimensional change data model at the respective change office of the component.

at an embodiment of the system according to the invention is a memory to the memory of a digital three-dimensional Data model of the entire component provided.

at an embodiment the system according to the invention the calculation unit updates the stored digital three-dimensional Data model of the entire component as a function of the generated change data models.

at a possible embodiment of the system according to the invention the measuring marks are glued to the respective component.

at a possible embodiment of the system according to the invention the component concerned is an aircraft component.

at a possible embodiment of the system according to the invention the component is a pipeline or an electrical line.

at The pipeline may be a hydraulic line, a gas line or act around a fuel line.

The The invention further provides a method for providing a digital three-dimensional data model of a component, one on the component made change using photogrammetry to generate a digital three-dimensional change data model through which the digital three-dimensional data model of the Component is updated automatically.

at an embodiment the method according to the invention is the component at each point of change, on which a change of the component is provided with marking elements.

at an embodiment the method according to the invention is the provided with marking elements component at the respective point of change from different points of view for the production of digital pictures Photographed.

at an embodiment the method according to the invention The marking elements have measuring marks on the component be attached, as well as markers for linking different digital images and reference standards.

at an embodiment the method according to the invention become the attached to the component marks from the digital Automatically extracts images and calculates their spatial coordinates.

at an embodiment the method according to the invention is calculated from the calculated spatial coordinates of the acquired measuring marks a digital three-dimensional change data model at the respective change office of the component generated.

at an embodiment the method according to the invention becomes a stored digital three-dimensional data model of the entire component by the for the change agencies generated change data models automatically updated.

at an embodiment the method according to the invention will be the updated digital three-dimensional data model of the entire component with a digital three-dimensional reference data model compared to calculate a model deviation.

at an embodiment the method according to the invention becomes an error handling action carried out, if the model deviation outside an adjustable tolerance range is.

at an embodiment the method according to the invention each generated three-dimensional change data model is merged with the associated digital images to document the respective change saved.

The The invention further provides a computer program with program instructions to carry out a Method for providing a digital three-dimensional data model a component, wherein a change made to the component means Photogrammetry for generating a digital three-dimensional change data model is captured, through which the digital three-dimensional data model of the component is updated automatically.

The The invention further provides a data carrier for storing a computer program with program instructions to carry out a method of providing a digital three-dimensional Data model of a component, wherein a change made to the component using photogrammetry to generate a digital three-dimensional change data model through which the digital three-dimensional data model of the Component is updated automatically.

in the further will be embodiments of the system according to the invention and the method of the invention to provide a digital three-dimensional data model a component with reference to the accompanying figures for explanation essential features described.

It demonstrate:

1 a diagram illustrating a conventional approach to provide a digital three-dimensional data model of a component;

2 a diagram illustrating the procedure according to the invention for providing a digital three-dimensional data model of a component;

3 a flowchart of a possible embodiment of the inventive method for providing a digital three-dimensional data model of a component;

4 a simple example of a change made to explain the method according to the invention for providing a data model;

5 a diagram illustrating the calculation of spatial coordinates, based on detected measurement marks in the inventive method;

6 a representation for explaining the procedure in the inventive method for providing a digital three-dimensional data model;

7 an example of a target / actual deviation in a digital three-dimensional data model, which is determined by the method according to the invention.

How to get out 2 can be seen in the system and method of the invention digital three-dimensional data model DMU of a component provided. This digital three-dimensional data model can be stored in a memory or a database. From the digital three-dimensional data model DMU construction documents of the object can be derived as target specifications in a known manner. These construction documents include, for example, three-dimensional engineering drawings and work instructions. This component is, for example, a conduit to be installed in an aircraft. This line may be a pipeline, which may be a hydraulic line, a gas line or a fuel line within the aircraft. In the event that due to the circumstances on site, the line, such as an electrical line or pipeline, can be moved only deviating from the plan specified in the construction plan a three-dimensional change data model is generated in the system and method according to the invention. For this purpose, the necessary changes made to the respective component, for example the electrical line, are recorded or measured by means of photogrammetry for generating the digital three-dimensional change data model. Subsequently, the existing or stored digital three-dimensional data model of the component is automatically updated by the generated three-dimensional change data model. How to get out 2 can recognize, the updating of the three-dimensional data model of the object is fully automatic without manual input by a development engineer. It also turns off 2 clearly that there is no media break between two-dimensional change proposals or complaint messages and the three-dimensional data model in the procedure according to the invention. This eliminates the risk of incorrect entries in the three-dimensional model. The three-dimensional model of the object is immediately updated without delay times, so that the three-dimensional data model and the construction documents derived therefrom are not obsolete. Photogrammetry allows a quick uncomplicated measurement of the actual state on a real object, for example within an aircraft fuselage.

3 shows a flowchart of a possible embodiment of the inventive method for providing a digital three-dimensional data model of a component.

In a step S1 is first every change agency of the component to which a change in the Component is to make, or has already been made, with marking elements Mistake. These marking elements have measuring marks, coding marks and reference standards. The optically detectable measuring marks are at the to be measured Component or object provided. The measuring marks can be attached directly to the component be or in the immediate vicinity of the component to be measured are attached. Furthermore are coding marks for linking different digital Images and, where appropriate, reference scales for measuring the distances provided.

To Attaching the marking elements in the inventive method in step S2, the component to be measured is at the respective point of change from different viewpoints to create multiple digital Photographs taken. In this case, preferably a high-resolution Fixed focal length camera used, which is calibrated. With this calibratable, high-resolution Camera with fixed focal length makes it possible for those in the digital images visible elements, in particular the marking elements whose To calculate coordinates.

The Coordinates of the marking elements are used in the method according to the invention in step S3 by a calculation unit, in particular a Computer, calculated. The measuring marks attached to the component become automatic by means of image recognition from the digital images extracted and calculated from their three-dimensional space coordinates. A photogrammetry software references the data of all digital Images into a common three-dimensional data system and calculated the coordinates of the marked measuring points.

In a further step S4 is the stored digital three-dimensional Data model of the entire part through the change data models generated for the change points automatically updated. The current three-dimensional data model, which updates the change model accordingly is, represents the current state or actual state of the component.

In a step S5, the previous existing before the update three-dimensional data model of the object, which is the original nominal state represents, be read out. In a step S6, a deviation between the updated three-dimensional data model and the original one be calculated three-dimensional data model. The updated digital three-dimensional data model of the entire component is thus in step S6 with a digital three-dimensional reference data model compared to calculate a model deviation.

In a further step S7 it can be checked whether the model deviation lies within or outside an adjustable tolerance range. If the model deviation is outside an adjustable tolerance range, a corresponding Error handling measure initiated and executed in step S8. If the model deviation lies within the tolerance range, a corresponding message is generated in step S9.

at a possible embodiment become the different generated three-dimensional change data models, those at the various change agencies be generated, along with the associated digital images for Documentation of the respective change stored in a database.

4 shows a simple example for explaining the system according to the invention and method for providing a digital three-dimensional data model in a component, in particular in an aircraft component.

During assembly, or laying of the electrical line while a mechanic notes that an electrical line 1 can not be laid according to the construction documents, as an obstacle in the form of a pipe R is present. The installer is therefore forced the electrical line 1 to lay around the pipe R around and thus deviate from the specification. To document this change and a corresponding change of the digital three-dimensional data model of the corresponding component 1 cause the fitter provides the object or the component 1 at the point of change with marking elements 2 , At the in 4 example shown brings the fitter measurement marks 2a . 2 B . 2c on the laid electrical line 1 at. The measuring marks 2 For example, on the jacket of the electric cable 1 glued on. Furthermore, a coding mark is made at the office of change 3 appropriate. This coding mark 3 serves to link the various digital images that the fitter with the help of a photo camera 7 from different angles. In addition, the fitter can set a benchmark at the point of change 4 , For example, a ruler or the like, visibly attach. After performing these actions, the point of change will be from different points of view using a high-resolution camera 7 photographed.

5 shows different digital pictures B1 to Bn taken by the camera 7 automatically to a calculation unit 5 which are transmitted to the component 1 provided measuring marks 2 automatically detects and from it three-dimensional spatial coordinates of the different measuring points 2 calculated. On the basis of the calculated spatial coordinates, a digital three-dimensional change data model can be used at the respective point of change by means of a software 1 be calculated.

6 shows a fitter 6 that is inside of a fuselage 8th located and by means of a camera 7 at a point of change a plurality of digital images B and receives a calculation unit 5 transfers. The measured points are overlapped by different viewpoints with a high-resolution camera 7 photographed. These digital images B can, for example, to a laptop or PC as a calculation unit 5 which automatically detects the measuring marks and calculates their spatial coordinates.

7 shows a simple example of a deviation between a digital three-dimensional reference data model and an updated three-dimensional model of an object. In the in 7 example shown is within an aircraft fuselage 8th a line as a component 1 laid. At a change point S, the laying of the component deviates 1 from the target course 9 of the reference data model. The current three-dimensional model of the object formed from the measured spatial coordinates can thus be compared directly with the associated original design. In the method according to the invention, the time required from the beginning of the measurement of the respective object to the presence of a possible comparison result is short and amounts to a few minutes to a few hours. At the in 1 The conventional approach is the required time for the incorporation of change suggestions including telephone inquiries often several days and depends strongly on the quality of the associated textual descriptions and the existing photos. The procedure according to the invention leads much faster to a comparison result. Moreover, in the procedure according to the invention, the calculation of the model deviation between desired and actual, ie between the reference data model and the updated digital three-dimensional data model, can be performed directly. There is thus no risk of misinterpretation, since the data model provided visualizes the real space coordinates actually implemented. The model deviation can be calculated directly and the appropriate measures can be carried out quickly.

The photographic measurement of the component can be made in the inventive method during the installation work. The high-resolution digital photos resulting from the photographic measurement can be used in addition to updating the digital three-dimensional model for documentation purposes. With the method according to the invention, additional points can be measured in addition to the explicitly marked measuring points. This means that the stored high-resolution digital images, due to the reference scales used can be used retrospectively to measure other points shown in the pictures, if necessary. The photographic measurement of points of change used in the method according to the invention allows contactless measurement of components by means of a calibrated camera 7 and other aids such as standardized reference scales 4 , wherein for the production of perspective coding marks 3 are provided in order to relate different digital images B to each other. For measuring and determining three-dimensional spatial coordinates, several digital images of the object to be measured are taken from different angles. The software creates three-dimensional spatial coordinates referenced from the digital images, the scales and the coding marks to the marked measuring points.

The The present invention provides a method and system for providing a digital three-dimensional data model of a component. there changes, which are made on the component, such as a line, by means of Photogrammetry for the generation of digital three-dimensional change data models detected. The digital three-dimensional data model of the component will follow dependent on from the generated change data models automatically updated.

1

component electrical line

2, 2a-2c

measuring marks

3

coding brand

4

reference scale

5

calculation unit

6

fitter

7

camera

8th

fuselage

9

desired course

Claims (15)

System for providing a digital three-dimensional data model of a component ( 1 ), with changes made to the component ( 1 ) are detected by means of photogrammetry for the generation of digital three-dimensional change data models, by which the digital three-dimensional data model of the component ( 1 ) is updated automatically. The system of claim 1, wherein at each point of change of the component ( 1 ) Marking elements ( 2 . 3 . 4 ) are provided. System according to claim 2, wherein at least one camera ( 7 ) provided with marking elements ( 2 . 3 . 4 ) provided component ( 1 ) at the respective point of change from different points of view for the production of digital images takes photographically. System according to claim 2 or 3, wherein the marking elements ( 2 . 3 . 4 ) Measuring marks ( 2 ) attached to the component ( 1 ) are attached or glued on, coding marks ( 3 ) for linking the various digital images and reference scales ( 4 ) exhibit. A system according to claim 4, wherein a calculation unit ( 5 ) is provided, which on the component ( 1 ) ( 2 ) are automatically detected in the recorded digital images and their spatial coordinates are calculated, and wherein the calculation unit ( 5 ) preferably from the calculated spatial coordinates of the detected measuring marks ( 2 ) a digital three-dimensional change data model at the respective point of change of the component ( 1 ). System according to one of the preceding claims, wherein a memory for storing a digital three-dimensional data model of the entire component ( 1 ) and that the calculation unit ( 5 ) preferably the stored digital three-dimensional data model of the entire component ( 1 ) depending on the generated change data models. System according to one of the preceding claims, wherein the component ( 1 ) An aircraft component is a pipeline or an electrical line. The system of claim 7, wherein the pipeline is a Hydraulic line, a gas line or a fuel line is. Method for providing a digital three-dimensional data model of a component ( 1 ), one on the component ( 1 ) is detected by means of photogrammetry to generate a digital three-dimensional change data model, by which the digital three-dimensional data model of the component ( 1 ) is updated automatically. Method according to claim 9, wherein the component ( 1 ) at each point of change where a modification of the component ( 1 ), with marking elements ( 2 . 3 . 4 ) (S1). The method of claim 10, wherein the labeling element (s) ( 2 . 3 . 4 ) provided component ( 1 ) is photographically photographed at the respective point of change from different viewpoints for the generation of digital images (S2) and wherein each generated three-dimensional change d is preferably stored together with the associated digital images for documentation of the respective change. Method according to claim 10 or 11, wherein the marking elements ( 2 . 3 . 4 ) Measuring marks ( 2 ) attached to the component ( 1 ), coding marks ( 3 ) for linking various digital images and reference scales ( 4 ) exhibit. Method according to claim 12, wherein the components 1 ) ( 2 ) are extracted automatically from the digital images and their spatial coordinates are calculated (S3) and where from the calculated spatial coordinates of the detected measuring marks ( 2 ) preferably a digital three-dimensional change data model at the respective point of change of the component ( 1 ) is generated (S4). The method of claim 13, wherein a stored digital three-dimensional data model of the entire component ( 1 ) is automatically updated by the change data models generated for the change locations, and wherein the updated digital three-dimensional data model of the entire component is preferably compared with a digital three-dimensional reference data model for calculating a model deviation (S6). The method of claim 14, wherein an error handling action is performed (S8), if the model deviation outside an adjustable tolerance range is.