Pmdtechnologies Ag

Ifm Electronic Gmbh

Christian Prestele

Ralph Wilks

Klaus Kohlmann

Ville Olbrich

Andreas Gebhard

A method for operating a camera system for detecting codings, in which positions of contour points of the codings are determined in relation to edges of a search zone of the camera system, wherein a reading reliability of the search zone is determined from a distance of the contour points from the edges of the search zone.

Camera system for detecting codings

A light transit time camera system and method for operating such a system which can be operated with at least three modulation frequencies, having the steps a) determining a phase shift (&#x3c6;) of an emitted signal (Sp) and a received signal (Sp) for a modulation frequency (f, f, f) in a phase-measuring cycle (PM, PM, . . . ), b) carrying out a plurality of phase-measuring cycles (PM, PM, . . . ), c) determining a distance value (d) on the basis of the phase shifts (&#x3c6;, &#x3c6;) determined in two successive phase-measuring cycles (PM, PM), in a distance-measuring cycle (M, M, . . . ), d) carrying out a plurality of distance-measuring cycles (M, M, . . . ), e) determining a distance deviation (&#x394;d) between the distance values of successive distance-measuring cycles, f) outputting of a distance value (d) as a valid distance value if the distance deviation (&#x394;d) is within a tolerance limit (&#x394;d) is provided.

Time of flight camera system

A light propagation time camera system and a method for operating such a system, in which&#x2014;in a distance measurement a first range-related variable is ascertained using a phase shift in an emitted and received signal for a first modulation frequency,&#x2014;and in a control measurement a second range-related variable is ascertained, wherein the control measurement is performed at a second modulation frequency, which differs from the first modulation frequency, and the control measurement is performed with a smaller number of phases than the distance measurement is provided.

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Friedrichshafen, Germany

Christian Prestele