Patent ID: 7812554
Filing Date: 2010-10-12
Classification: E05F,E05Y

Abstract:
1. A control device for opening/closing member comprising: a speed detecting unit for detecting a rotation speed of a motor for opening/closing the opening/closing member; a variation calculating unit for calculating variation in the rotation speed based on a present value and a past value of the rotation speed detected by the speed detecting unit; a judgment unit for comparing the variation calculated by the variation calculating unit and a predetermined threshold value and judging whether or not a foreign object is entrapped in the opening/closing member based on the comparison result; a control unit for controlling the motor to open or stop the opening/closing member when judged that the foreign object is entrapped by the judgment unit; and a state detecting unit for detecting a state of the opening/closing member or state of surrounding of the opening/closing member; wherein the variation calculating unit selects an earlier past value or a past value close to the present as the past value of the rotation speed according to the state detected by the state detecting unit, and calculates the variation in the rotation speed using the selected past value and the present value.