Apparatus and method for detecting a feature of a running material web

A method for detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated by one or more individually addressable light sources in a selected lighting configuration;
• the light emitted by the illuminated section as an optical response is detected, spatially resolved, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the light sources are addressed in different lighting configurations, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, an optimal lighting configuration for further detection is determined.

An apparatus for detecting a substantially longitudinally extending feature of a running material web comprising:

• an illumination unit for illuminating a section of the material web containing the feature to be detected;
• a spatially resolving detection unit for recording the light emitted by the illuminated section as an optical response in one of multiple different settable detection configurations, and for transmitting to an analysis unit a data signal corresponding to the recorded light;
• an analysis unit for determining from the transmitted data signal one or more characteristic parameters of the feature to be detected;
• and
• a selection unit for automatically determining an optimal detection configuration that is arranged and adapted to address the detection unit in the different settable detection configurations, to rate according to a pre-selected criterion the characteristic parameters determined in each case for the feature to be detected, and based on this rating, to determine the optimal detection configuration for further detection.

A method for detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated;
• the light emitted by the illuminated section as an optical response is detected, spatially resolved, in one of multiple different settable detection configurations, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the detection unit for automatically determining an optimal detection configuration is addressed in different of the settable detection configurations, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, the optimal detection configuration for further detection is determined.

A method f or detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated by one or more individually addressable light sources in a selected lighting configuration;
• the light emitted by the illuminated section as an optical response is detected, spatially resolved, in one of multiple different settable detection configurations, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the light sources are addressed in different lighting configurations, for each lighting configuration, the detection unit in different settable detection configurations is addressed, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, an optimal combination of lighting configuration and detection configuration for further detection is determined.

An apparatus for detecting a substantially longitudinally extending feature of a running material web comprising:

• a plurality of individually addressable light sources for illuminating, in one of multiple different lighting configurations, a section of the material web containing the feature to be detected;
• a spatially resolving detection unit for recording the light reflected by the illuminated section as an optical response and for transmitting to an analysis unit a data signal corresponding to the recorded light;
• an analysis unit for determining from the transmitted data signal one or more characteristic parameters of the feature to be detected;
• and
• a selection unit for automatically determining an optimal lighting configuration, that is arranged and adapted to address the light sources in different lighting configurations, to rate according to a preselected criterion the characteristic parameters determined in each case for the feature to be detected, and based on this rating, to determine the optimal lighting configuration for further detection.

A method for detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated by one or more individually addressable light sources in a selected lighting configuration;
• the light reflected by the illuminated section as an optical response is detected, spatially resolved, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the light sources are addressed in different lighting configurations, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, an optimal lighting configuration for further detection is determined.

An apparatus for detecting a substantially longitudinally extending feature of a running material web comprising:

• an illumination unit for illuminating a section of the material web containing the feature to be detected;
• a spatially resolving detection unit for recording the light reflected by the illuminated section as an optical response in one of multiple different settable detection configurations, and for transmitting to an analysis unit a data signal corresponding to the recorded light;
• an analysis unit for determining from the transmitted data signal one or more characteristic parameters of the feature to be detected;
• and
• a selection unit for automatically determining an optimal detection configuration that is arranged and adapted to address the detection unit in the different settable detection configurations, to rate according to a pre-selected criterion the characteristic parameters determined in each case for the feature to be detected, and based on this rating, to determine the optimal detection configuration for further detection.

A method for detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated;
• the light reflected by the illuminated section as an optical response is detected, spatially resolved, in one of multiple different settable detection configurations, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the detection unit for automatically determining an optimal detection configuration is addressed in different of the settable detection configurations, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, the optimal detection configuration for further detection is determined.

A method for detecting a substantially longitudinally extending feature of a running material web in which:

• a section of the material web containing the feature to be detected is illuminated by one or more individually addressable light sources in a selected lighting configuration;
• the light reflected by the illuminated section as an optical response is detected, spatially resolved, in one of multiple different settable detection configurations, and a data signal corresponding to the detected light is generated;
• one or more characteristic parameters of the feature to be detected are determined from the data signal generated;
• and
• the light sources are addressed in different lighting configurations, for each lighting configuration, the detection unit in different settable detection configurations is addressed, the characteristic parameters determined in each case for the feature to be detected are rated according to a pre-selected criterion, and based on this rating, an optimal combination of lighting configuration and detection configuration for further detection is determined.