| 摘要 |
Lift installation with a length measuring system for determining a cage position of a lift cage (2) movable along at least one guide rail (7), a code mark pattern (20) mounted near the lift cage and parallel to the travel direction (8), a code reading device (12) , which is mounted on the lift cage, for contactless scanning of the code mark pattern and an evaluating unit (17) for evaluating scanned code mark patterns , characterized in that n successive code marks (21) for the code mark pattern form a code word, that code words are unambiguously arranged in an n-digit pseudo random sequence of different code words, that the code words form a single -track code mark pattern and that a scanned code word represents an absolute cage position (35).
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