CODING APPARATUS AND POSITION-FINDING APPARATUS AND METHOD

摘要

A computer-implemented method for determining the position of a lift cabin in a lift shaft with the aid of a coding device, in which method is at least one of a section of the code band and the bearing device is recorded with an optical detection device as a pixel image in which the pixel image is larger than the position marker, the pixel image is processed and a binary code is decoded by means of an algorithm and converted into a position indication, a checksum of the position marker, which is formed by at least one of the binary code and grayscale values of the position marker, is compared to a predetermined value, and one of a barcode and a 2D code calculated from the position indication using an inverse of the algorithm and is compared with at least one recorded row outside of the position marker.

主权项

1. A coding device for marking positions in a lift shaft and for determining the position of lift cabins in the lift shaft comprising a code band, wherein:
the code band has at least three markings, which are arranged along a length of the code band in order to mark discrete positions in each case, the at least three markings are formed as at least one of a barcode and a 2D code, the at least three markings are arranged in such a way to form rows, the at least three markings are formed in such a way to include a position marker for each discrete position to be marked, the at least three markings are decodable by way of an algorithm, at least one bearing device is provided for bearing the code band in the lift shaft that can be moved longitudinally, the at least one bearing device formed to encompass the code band at least in part, and formed in such a way to carry a marking which is arranged in such a way to cover at least part of the marking of the code band in a readable manner when the code band is encompassed at least in part.