| 摘要 |
The invention relates to an arrangement and a method for determining the position of an elevator car (1) in the elevator hoistway (2). The arrangement comprises a measuring apparatus (3) fitted in connection with the elevator car (1). The measuring apparatus is arranged to form an electromagnetic radiofrequency measuring signal (5), for determining the position of the elevator car. The arrangement also comprises a position identifier (4) fitted in a selected location in relation to the elevator hoistway (2). The position identifier is arranged to connect inductively to the aforementioned electromagnetic measuring signal (5), and also after it has connected to send a determined pulse pattern using the aforementioned measuring signal (5). The means (11) for measuring an external magnetic field are arranged in the measuring apparatus (3), that the position identifier (4) comprises a permanently-magnetized marking piece (12), which marking piece comprises at least two consecutive magnetic areas (13,13'). The magnetic poles of which consecutive magnetic areas are of opposite directions to each other, and which consecutive magnetic areas are arranged at a determined distance from each other in the direction of movement of the elevator car. |
