Automatic entrance barrier system with dc motor

Abstract

ASSA ABLOY Entrance Systems AB has developed a method for determining a load on a DC motor (24) of an automatic entrance barrier system comprises the steps of: receiving quadrature values and/or total current values absorbed by the motor (24) and obtained during a test run of the automatic entrance barrier system; determining an average value for the quadrature and/or for the total current absorbed by the motor (24) during a closed loop operation phase (16) of the motor (24); determining, based at least on the respective average value, a load parameter of the automatic entrance barrier system; and outputting a signal based on the determined load parameter or storing the load parameter. Further, a corresponding computer program product, a control unit (26) and a DC motor (24) comprising such control unit (26) are shown.

Dependencies are inferred from the claim text.