| 摘要 |
A method and system for supervising the safety of an elevator car 2 is disclosed. Various parameters relating to the travel of the elevator car, such as position, speed and acceleration, are compared with similar parameters sensed at the motor 12 driving the car. If the comparison shows a large deviation between the parameters an emergency stop is initiated. Otherwise one of the travel parameters, measured at either the car or motor, is output as a verified signal that is compared with predetermined permitted values. If the verified signal is outside the permitted range then an emergency stop is initiated. |
