Multisensorisches Messsystem zur dreidimensionalen Inspektion technischer Oberflächen

Keck, Alexander; Böhm, Michael; Knierim, Karl Lukas; Sawodny, Oliver; Gronle, Marc; Lyda, Wolfram

doi:10.1515/teme-2014-0402

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…The inspection is executed with a multi-axis measurement machine, depicted in figure 10. This machine is equipped with three translational axes x, y and z as well as one axis of rotation with the mount for the objects [35]. Hence, only four degrees of freedom are available for the positioning.…”

Section: Examplesmentioning

confidence: 99%

View and sensor planning for multi-sensor surface inspection

Gronle

2016

Surf. Topogr.: Metrol. Prop.

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Modern manufacturing processes enable the precise fabrication of high-value parts with high precision and performance. At the same time, the demand for flexible on-demand production of individual objects is continuously increasing. These requirements can only be met if inspection systems provide appropriate answers. One solution is the use of flexible, multi-sensor setups where multiple optical sensors with different fields of application are combined in one system. However, the challenge is then to assist the user in planning the inspection for individual parts. A manual planning requires an expert knowledge of the performance and functionality of every sensor. Therefore, software assistant systems help the user to objectively select the right sensors for a given inspection task. The planning step becomes still more difficult if the manufactured part has a complex form. The implication is that a sensor's position must also be part of the planning process since it significantly influences the quality of the inspection. This paper describes a view and sensor planning approach for a multi-sensor surface inspection system in the context of optical topography measurements in the micro-and meso-scale range. In order to realize an online processing of the assistant system, a significant part of the calculations are done on the graphics processing unit (GPU).

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Section: Examplesmentioning

confidence: 99%

View and sensor planning for multi-sensor surface inspection

Gronle

2016

Surf. Topogr.: Metrol. Prop.

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“…Besides the explained four steps, there are other approaches for combining measurement data, e.g. presented in Puente León and Kammel (2003), Komander et al (2014) and Keck et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Qualification concept for optical multi-scale multi-sensor systems

Loderer¹,

Hausotte²

2016

J. Sens. Sens. Syst.

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Abstract. This article describes a new qualification concept for dimensional measurements on optical measuring systems. Using the example of a prototypical multi-scale multi-sensor fringe projection system for production-related inspections of sheet-bulk metal-formed parts, current measuring procedures of the optical system are introduced. Out of the shown procedures' deficiencies, a new concept is developed for determining the orientations and positions of the sensors' measuring ranges in a common coordinate system. The principle element of the concept is a newly developed flexible reference artefact, adapted to the measuring task of the fringe projection system. Due to its dull surface, the artefact is optimized for optical measuring systems, like the used fringe projection sensors. By measuring the reference artefact with each fringe projection sensor and aligning the resulting data sets on a digital reference model of the artefact, sensor-specific transformation matrices can be calculated which allow transformation of the sensors' data sets into a common coordinate system, without the need for any overlapping areas. This approach is concluded in an automated measuring procedure, using alignment algorithms from commercial available software where necessary. With the automated measuring procedure, geometrical relations between individual measured features can be determined and dimensional measuring beyond the measuring range of a sensor became possible. Due to a series of experiments, the advantages of the new qualification concept in comparison with the current measuring procedures are finally revealed.

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