Patent ID: 8408364
Filing Date: 2013-04-02
Classification: B66B

Abstract:
1. A measuring arrangement for measuring movement of an elevator car, the measuring arrangement comprising: identifiers disposed at set points in the elevator hoistway, each of the identifiers containing at least one property to be measured, the property to be measured being made to be variable in a direction of the movement of the elevator car; a plurality of RFID tags, each of the RFIDs being fixed to a corresponding one of the identifiers and containing identifier-specific identification of the corresponding one of the identifiers; and at least one measuring apparatus, the measuring apparatus being fitted in connection with the elevator car and the measuring apparatus being arranged to move in the elevator hoistway along with the elevator car, the measuring apparatus being to separately read the property to be measured of each of the identifiers after the measuring apparatus has moved in the elevator hoistway to the reading point individual for the identifier to be read; wherein the speed of the elevator car in the reading situation of the identifier is determined from the time variation of the property to be measured of the identifier in question.