Obstruction detection for a window

摘要

A system (20) for the detection of an obstruction in the path of a closing window (14) which is movable by an electric motor (16), the system comprising a FMCW radar transmitter (22) mountable on the window for transmitting a FMCW radar signal; a FMCW radar receiver (24) mountable on the window adjacent the transmitter for receiving the FMCW radar signal transmitted by the transmitter; and a control unit (26) for monitoring the FMCW radar signal received by the receiver, the control unit being connectable to the electric motor to control the operation of the motor dependent on the signal received by the receiver.