ABSTRACT
In modern inspection and testing processes of technical objects, there is an increasing demand for flexible, fast and precise inspection systems. Especially with complex parts, the inspection can often not be carried out in one step with only a single sensor or measurement principle. Instead, different inspection steps have to be executed for individual subregions of the object’s surface. The defects to be inspected, as well as the appearance or condition of the surfaces can vary greatly. In order to realize such differing inspection tasks, the use of flexible, multisensor systems consisting of different sensors with individual properties is proposed.
This chapter aims to give an insight about the major topics that must be considered, especially in an automated data registration within such multisensor systems. At first, different sensor fusion strategies are presented. In order to fuse data obtained by different sensors or multiple acquisitions or compare the results with the given model, it is necessary to register all sensors, all axes, the object, and its model within one common coordinate system. Solutions to this in the context of scalable and varying optical sensors are then shown in the subsequent section. Afterwards, a combined sensor and view planning system is presented, which is used to automatically select the best sensors, their parameterization, and poses in order to obtain high-quality measurements for verifying a given specification for the subsurface under test. This chapter concludes with an exemplary setup for such an automated and flexible multisensor inspection system.
