Trailer anti-sway system
AssigneeHyundai Mobis Co., Ltd.
InventorDong Ho Song
Life of this patent
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Abstract
Proposed is a trailer anti-sway system including a front camera, a front and side radar, a tow truck IMU, a hinge angle sensor configured to measure a hinge angle between the tow truck and a trailer, a rear camera configured to photograph a rear side of the trailer, a rear and side radar configured to monitor the rear and side of the trailer, a trailer IMU mounted to the trailer, and a controller configured to receive a signal of at least one of the front camera, the front and side radar, the tow truck IMU, the hinge angle sensor, the rear camera, the rear and side radar, the trailer IMU, predict the possibility of the sway occurrence to warn a driver of the possibility of the sway occurrence, and perform stability control for the tow truck and the trailer by stages according to a predetermined reference condition.
Claims9
A trailer anti-sway system comprising:
- a front sensor installed on a front of a tow truck relative to the tow truck and a trailer;
- a tow truck inertial measurement unit (IMU) mounted to the tow truck;
- a hinge angle sensor configured to measure a hinge angle between the tow truck and the trailer;
- a rear sensor installed on a rear of the trailer relative to the tow truck and the trailer;
- a trailer IMU mounted to the trailer;
- and
- a controller configured to receive a signal from one or more selected from the front sensor, the tow truck IMU, the hinge angle sensor, the rear sensor, and the trailer IMU, predict a possibility of a sway occurrence to warn a driver of the possibility of the sway occurrence based on the received signal, and perform stability control for one or more of the tow truck and the trailer by a stage based on a predetermined reference condition,
- wherein, while the tow truck and the trailer are in stop states, the controller is configured to:
- save first vanishing points of images captured by a front camera before the trailer is connected to the tow truck;
- save second vanishing points of images captured by the front camera after the trailer is connected to the tow truck;
- calculate a pitch change of the tow truck based on a change between the first vanishing points and the second vanishing points;
- determine that an alignment failure between the tow truck and the trailer occurs when the pitch change exceeds a predetermined threshold;
- and
- warn a driver of the alignment failure so that a height of the tow truck is manually or automatically adjusted.
Dependencies are inferred from the claim text.