Driving assist apparatus of vehicle
First Claim
1. A driving assist apparatus of a vehicle driven by a driver, comprising:
- at least one sensor to detect a moving object existing around the vehicle; and
an electronic control unit to perform an attention operation to the driver of the vehicle by being configured to;
set two predicted moving routes for two end sides of the vehicle, the two predicted moving routes having different radii, each of the two predicted moving routes being set such that;
when the driver turns the vehicle left;
after the driver has started to turn the vehicle left;
calculate a curvature radius of a first moving route of the vehicle based on an operation made by the driver to turn the vehicle left;
calculate a change rate of a yaw rate of the vehicle based on yaw rate information detected by a yaw rate sensor of the vehicle;
identify a specific point in the first moving route where the curvature radius of the first moving route is predicted to become smallest using the change rate of the yaw rate of the vehicle, based on a presumption that the curvature radius of the first moving route decreases when the yaw rate of the vehicle increases by the change rate of the yaw rate on a moment-to-moment basis while the vehicle turns left;
set, as a predicted minimum left turn radius, the curvature radius at the identified specific point in the first moving route; and
set a route curved along an arc having the predicted minimum left turn radius as the predicted moving route; and
when the driver turns the vehicle right;
after the driver has started to turn the vehicle right;
calculate a curvature radius of a second moving route of the vehicle based on an operation made by the driver to turn the vehicle right;
calculate the change rate of the yaw rate of the vehicle;
identify a specific point in the second moving route where the curvature radius of the second moving route is predicted to become smallest using the change rate of the yaw rate of the vehicle, based on a presumption that the curvature radius of the second moving route decreases when the yaw rate of the vehicle increases by the change rate of the yaw rate on a moment-to-moment basis while the vehicle turns right;
set, as a predicted minimum right turn radius, the curvature radius at the identified specific point in the second moving route; and
set a route curved along an arc having the predicted minimum right turn radius as the predicted moving route; and
perform the attention operation when a time predicted for the vehicle to reach a point where the moving object crosses at least one of the two predicted moving routes is smaller than or equal to a threshold time.
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Accused Products
Abstract
A driving assist apparatus of a vehicle of the invention predicts, as a predicted minimum left turn radius, a curvature radius of a moving route of the vehicle at a point where a curvature radius of the moving route is predicted to become smallest when the vehicle turns left, and sets a route curved along an arc having the predicted minimum left turn radius as a predicted moving route predicted for the vehicle to move. The apparatus predicts, as a predetermined minimum right turn radius, the curvature radius of the moving route of the vehicle at the point where the curvature radius is predicted to become smallest when the vehicle turns right, and sets the route curved along the arc having the predicted minimum right turn radius as the predicted moving route.
52 Citations
5 Claims
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1. A driving assist apparatus of a vehicle driven by a driver, comprising:
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at least one sensor to detect a moving object existing around the vehicle; and an electronic control unit to perform an attention operation to the driver of the vehicle by being configured to; set two predicted moving routes for two end sides of the vehicle, the two predicted moving routes having different radii, each of the two predicted moving routes being set such that; when the driver turns the vehicle left; after the driver has started to turn the vehicle left; calculate a curvature radius of a first moving route of the vehicle based on an operation made by the driver to turn the vehicle left; calculate a change rate of a yaw rate of the vehicle based on yaw rate information detected by a yaw rate sensor of the vehicle; identify a specific point in the first moving route where the curvature radius of the first moving route is predicted to become smallest using the change rate of the yaw rate of the vehicle, based on a presumption that the curvature radius of the first moving route decreases when the yaw rate of the vehicle increases by the change rate of the yaw rate on a moment-to-moment basis while the vehicle turns left; set, as a predicted minimum left turn radius, the curvature radius at the identified specific point in the first moving route; and set a route curved along an arc having the predicted minimum left turn radius as the predicted moving route; and when the driver turns the vehicle right; after the driver has started to turn the vehicle right; calculate a curvature radius of a second moving route of the vehicle based on an operation made by the driver to turn the vehicle right; calculate the change rate of the yaw rate of the vehicle; identify a specific point in the second moving route where the curvature radius of the second moving route is predicted to become smallest using the change rate of the yaw rate of the vehicle, based on a presumption that the curvature radius of the second moving route decreases when the yaw rate of the vehicle increases by the change rate of the yaw rate on a moment-to-moment basis while the vehicle turns right; set, as a predicted minimum right turn radius, the curvature radius at the identified specific point in the second moving route; and set a route curved along an arc having the predicted minimum right turn radius as the predicted moving route; and perform the attention operation when a time predicted for the vehicle to reach a point where the moving object crosses at least one of the two predicted moving routes is smaller than or equal to a threshold time. - View Dependent Claims (2, 3, 4, 5)
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Specification