State of the Art of 3d Measurement Systems for Industrial and Engineering Applications
نویسندگان
چکیده
Industrial 3D measurement systems have been in a rapid development phase during the last ten years. The rapid change has been generated primarily by demands for accuracy and efficiency from the aerospace and manufacturing industries, along with very strong competition amongst commercial providers of systems and services. The current trends are toward total automation of the measurement set up and acquisition process, user-directed real time measurement, and provision for direct input of three dimensional coordinates, strings or geometric objects into a CAD model, within a user defined reference frame. Almost as a minor consequence, the precision and reliability of the acquired data are steadily improving, due to both better system design and increased computer processing capability. Inevitably such systems are now seen by users as "off the shelf" tools to produce the desired results for a particular application in the most appropriate and efficient way. Optical techniques such as theodolite and vision metrology systems, mechanical systems such as portable coordinate measuring machines, and hybrid systems such as the integration of vision metrology and motorised control, are described and discussed.
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