System, in particular an installation, including a mobile part that is movable along a coding region, and method for operating such a system

A system, comprising:

• a mobile part movable along a coding region and including a camera connected to an evaluation unit of the mobile part, the coding region including successively arranged coded regions;
• and
• a one-part or multi-part cover that covers at least one of the coded regions;
• wherein the evaluation unit is adapted to temporally recurrently determine a deviation of a first coded region with respect to a viewing direction of the camera and/or to a straight line aligned in parallel with the viewing direction of the camera and passing through a central point of an image sensor of the camera and/or to a reference point arranged in the coding region and movable relative to the mobile part;
• and
• wherein the cover includes at least one part of a cover element and borders the first coded region, each coded region including a respective position in the system as information, each coded region having a first code encoded in a first color and a second code encoded in a second color, the first and second codes each encoding same information, the mobile part including a control device adapted to control a color of emitted light of a lighting device of the mobile part, the control device adapted to recognize and decode the first code and the second code by illumination by the lighting device, the system including a comparison device adapted to compare respectively decoded bits of information with each other and to trigger an error signal if the bits of information do not match.

A method, for operating a system that includes a mobile part movable along a coding region and including a camera connected to an evaluation unit of the mobile part, the coding region including successively arranged coded regions, each coded region including a code, and a one-part or multi-part cover that covers the code of at least one of the coded regions, the evaluation unit adapted to temporally recurrently determine a deviation of a first coded region with respect to a viewing direction of the camera and/or to a straight line aligned in parallel with the viewing direction of the camera and passing through a central point of an image sensor of the camera and/or to a reference point arranged in the coding region and movable relative to the mobile part, comprising:

• temporally recurrently recording, by the camera, an image of the first coded region through an opening of the cover;
• determining, by evaluating images taken of the first coded region, respective deviations of the first coded region with respect to the viewing direction of the camera and/or to the straight line aligned in parallel with the viewing direction of the camera and passes through the central point of the image sensor of the camera and/or to the reference point that is in the coding region and is immobile relative to the mobile part;
• and
• monitoring the determined deviations for an impermissibly large outlier;
• wherein each coded region includes a respective position in the system as information, each coded region has a first code encoded in a first color and a second code encoded in a second color, and the first and the second code each encode same information.