Method and apparatus for detecting position of elevator car

An elevator system (1) comprises 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 suchthat the load sensor (4, 24, 34, 44) detects a load from at least a small portion of the flexible member (2, 18, 22) and applies the load to the small portion of the flexible member (2, 18, 22) of theload sensor (4, 24, 34, 44) as the elevator unit (10, 20, 28) moves vertically in the hoistway. The system also includes a non-volatile memory arranged to store load conversion information for converting the detected load into an elevator unit position. 一种电梯系统(1)包括载荷传感器(4,24,34,44)、柔性部件(2,18,22)，以及布置成在井道中垂直地移动的电梯单元(10,20,28)。系统布置成使得载荷传感器(4,24,34,44)至少从柔性部件(2,18,22)的小部分检测载荷，并且将载荷施加于载荷传感器(4,24,34,44)的柔性部件(2,18,22)的小部分在电梯单元(10,20,28)在井道中垂直地移动时变化。系统还包括非易失性存储器，其布置成储存用于将检测的载荷转换成电梯单元位置的载荷转换信息。