Vehicular anti-pinch system with rain compensation
AssigneeMagna Closures Inc.
InventorMirko Pribisic
Life of this patent
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Abstract
A method for preventing a vehicular door or window panel from pinching an obstruction extending through an aperture of the vehicle by measuring a capacitance of a field extending through the aperture using a capacitive sensor as a motor drives the panel between the open and closed positions, correlating the measured capacitance to panel position to create closing data, comparing the closing data to a reference map to create a compare value, and detecting an object in a path of the panel as it moves toward the closed position when the compare value exceeds a threshold value. The threshold value is dependent on the relative wetness of the sensor, which is determined by comparing the capacitance of the sensor at predetermined panel positions against a calibration wetness profile.
Claims7
A method for preventing a closure panel for an aperture of a motor vehicle from pinching an object extending through the aperture when the closure panel is moved between an open position and a closed position, the method comprising:
- measuring a capacitance of a capacitive sensor proximate the aperture as the closure panel is moved between the open and closed positions;
- identifying a position of the closure panel using a position sensor as the closure panel is moved between the open and closed positions;
- correlating the measured capacitance to the position identified to create closing data for the position;
- comparing the closing data for the position to a reference map for the position to create a compare value;
- detecting the object in the aperture as the closure panel moves through the position toward the closed position when the compare value exceeds a threshold value dependent on a relative wetness of the capacitive sensor;
- and
- preventing the closure panel from continuing to move toward the closed position upon detection of the object.
Dependencies are inferred from the claim text.