Gm Global Technolgoy Operations, Inc.

Dan Mepham

Hongguang Sun

Norman Joseph Weigert

Yun Qian Miao

Michael D Alarcon

Methods and apparatus are provided for determining a trailer dimension including a radar for generating a depth map wherein the depth map includes a detection of a first trailer surface, a camera for generating an image of the first trailer surface, a processor operative to determine a first dimension of the first trailer surface in response to the depth map and a second dimension of the first trailer surface in response to the first dimension and the image, and a vehicle controller controlling a vehicle in response to the first dimension and the second dimension.

Method and apparatus for determining trailer dimensions in a motor vehicle

A self-cleaning lens system disposed adjacent a camera is disposed. The system may incorporate a piezoelectric (PZT) lens system having a first PZT element secured to a first peripheral portion of the lens element, which may be responsive to an alternating current (AC) signal applied to the first PZT element. An AC signal may excite the first PZT element to cause shear displacements in opposite longitudinal directions and to create an oscillating shear motion for the first PZT element. The oscillating shear motion may cause an oscillating rotational movement of the lens element that removes the environmental element from a surface of the lens element.

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Whitby, Canada

Dan Mepham