Patent ID: 7548809
Filing Date: 2009-06-16
Classification: E05F,E05Y

Abstract:
1. An apparatus for controlling and sensing a closure member movable between an open position and a closed position, more particularly an electrically powered window pane in a motor vehicle, comprising: a sensor having a sensor electrode generating an electric field in an opening range of the closure member and a controller connected to the sensor and detecting any change in capacitance of the sensor electrode in providing a control signal, the controller detecting a change in capacitance of the sensor electrode on the basis of the presence of film of moisture on the closure member; wherein the sensor is operable in a first sensitivity mode and in a second sensitivity mode; wherein the controller detecting in the first sensitivity mode a change in capacitance of the sensor electrode due to the presence of an obstruction in the opening range of the closure member; and wherein the controller detecting in the second sensitivity mode a change in capacitance of the sensor electrode due to the presence of a film of moisture on the closure member.