method for monitoring the tu00fcrenmechanismus for an elevator

摘要

The invention relates to a method for monitoring the condition of the door of an elevator and determining its need for maintenance, the door comprising a door mechanism, door panels and a door operator. The signals (10) of the control system of a door in good condition are measured and a set of characteristics descriptive of the operation of the door is generated from them. The signals (10) of the door control system are measured the operation during the opening and closing movements of the door is divided into stages according to which parts of the door are functioning at each stage. From the measured signals (10), a set of characteristics descriptive of the operation of the door is generated. The set of characteristics thus generated is compared to the set of characteristics for a normal operating condition stored in memory, at least in one stage of operation. Based on the comparison of the two sets of characteristics, a diagnosis is performed to determine where and how the operation of the door and its components deviates from normal operation, and the result of the diagnosis is utilized to establish the need for servicing and a servicing date.