Communication method of iGPS measurement system and computer-graphics aided three-dimensional interactive application (CATIA) software data

Abstract

The invention provides a communication method of an iGPS measurement system and computer-graphics aided three-dimensional interactive application (CATIA) software data. The communication method includes the steps that a CAA is used for writing a virtual assembly module based on a CATIA assembling module, a virtual assembly is utilized to load virtual assembly part files, a middle software mysurveyor between a surveyor and a CATIA is developed, and the middle software mysurveyor provides real-time tracking measurement and single-point measurement according to request data content sent by the virtual assembly, combines measurement data with a model of a three-dimensional virtual assembly part, and reflects actual conditions of assembly sites into CATIA software by means of coordinate conversion. The communication method avoids the problems that the iGPS measurement system and the three-dimensional model are difficult to combine and communication between the CATIA software and external data is difficult, enables movable situations of the assembly part in the process of assembling to be observed in real time, and has certain reference value to airplane automatic assembly.

Description

technical field [0001] The invention belongs to the field of information technology, and relates to an iGPS measurement system and a method for data communication of CATIA software. Background technique [0002] In the assembly of large aircraft components, it is necessary to measure the reference point to adjust the position and attitude of the assembly, and it needs to meet high precision. The indoor measurement and positioning system iGPS is a new type of three-dimensional digital measurement technology. It has the unique advantages of large range space, overall measurement, multi-task, and high efficiency. It well matches the needs of aircraft digital assembly for three-dimensional measurement technology. In foreign advanced aircraft manufacturing technology, iGPS measurement technology has become one of the most important technical means in digital assembly, showing broad and attractive application prospects and values. [0003] iGPS measurement system consists of lase...

AI Technical Summary

Problems solved by technology

[0007] (1) iGPS system is difficult to combine with 3D model

[0008] The aircraft product models of modern aviation enterprises are basically modeled and assembled in CATIA V5. In the actual assembly process, it is necessary to observe the deformation of the actual assembly parts. It is difficult to combine the measurement data read by Surveyor with the 3D data model, although Suveyor can send data to SA (Spatial Analyzer) and other processing software that supports 3D models, but the digital model based on CATIA must be converted to the format allowed, such as converting the CATPart format of CATIA parts to igs format, which will increase the work amount, and some information may be lost during digital-to-analog conversion, which is not conducive to the combination of 3D model and actual measurement data

[0009] (2) Difficulties in communication between CATIA software and external data

[0010] CATIA software is a modular program written based on the Windows core API. It

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