Method and apparatus for detecting the position of an elevator

Abstract

An elevator system (1) includes a load sensor (4, 24, 34, 44), a flexible member (2, 18, 22) and an elevator unit (10, 20, 28) arranged to move vertically in a hoistway. The system is arranged such that the load sensor (4, 24, 34, 44) detects a load from at least a fraction of the flexible member (2, 18, 22) and the fraction of the flexible member (2, 18, 22) that applies load to the load sensor (4, 24, 34, 44) changes as the elevator unit (10, 20, 28) moves vertically in the hoistway. The system further includes a non-volatile memory, arranged to store load conversion information for converting the detected load into an elevator unit position.

Dependencies are inferred from the claim text.