MONITORING LIFT STATUS Russian patent published in 2009 - IPC B66B1/28 B66B5/02 

FIELD: physics.

SUBSTANCE: system for monitoring safety of a lift with a cabin (2), driven by an actuating device (12), mounted in the shaft (4) of the lift, in which the parametre (X_ABS, X"_ACC> X'_IGB) of movement of the cabin (2) is determined and constantly compared with a similarly determined parametre (X'_IG) of movement of the actuating device. If the result of the comparison shows large deviation between these two parametres, emergency stopping is initiated. Otherwise, one of the parametres (X_ABS, X"_ACC> X'_IGB, X'_IG) of movement is output as a checked signal (X; X'). The checked signal is then compared with given permitted values. If the value lies outside the limits of the permitted range, emergency stopping is initiated.

EFFECT: significant simplification of components used in the architecture of the safety circuit, with simultaneous improvement of operating characteristics of the lift using modern systems of collecting information on the shaft of the lift.

13 cl, 7 dwg