Method of generating hoistway information to serve an elevator control

摘要

The shaft information generation method uses visually detectable patterns provided along the elevator shaft, provided by structured surfaces of shaft components having a different function. Images are generated by stepped detection of the patterns, the image data fed to a correlator providing an estimated position from the incremental position of a new image and the absolute position of a preceding image and fed to a second correlator providing an absolute position for the lift control.