Driving support apparatus
First Claim
1. A driving support apparatus comprising:
- object information acquisition means for acquiring object information including a position of an object existing around an own vehicle with respect to said own vehicle, a moving direction of said object, and a moving speed of said object, using a first sensor apparatus mounted in said own vehicle;
own vehicle information acquisition means for acquiring own vehicle information including an own vehicle speed which is a vehicle speed of said own vehicle, a yaw rate of said own vehicle, and a direction indicator signal showing a state of a direction indicator of said own vehicle, using a second sensor apparatus mounted in said own vehicle;
turning-right-or-left-start-determination-means for determining whether or not said own vehicle is trying to start turning left or right based on said own vehicle information;
expected route estimation means for estimating an expected route of said own vehicle at a current point in time based on said own vehicle speed and said yaw rate upon determining that said own vehicle is trying to start turning left or right;
alert request means for generating a request signal to alert a driver of said own vehicle based on said object information and said expected route; and
alerting means for conducting an operation to alert said driver in response to said request signal, wherein;
said expected route estimation means is configured to use a formula of a circle as an expected route formula expressing said expected route,a center of said circle is positioned at a position shifted from a current position of said own vehicle in a direction perpendicular to a traveling direction of said own vehicle at a current point in time by a length of an estimated turning radius estimated using at least said yaw rate at said current point in time to a left side with respect to said traveling direction when said own vehicle is turning left and to a right side with respect to said traveling direction when said own vehicle is turning right,a radius of said circle is said estimated turning radius, andsaid alert request means is configured to;
calculate a turning angle of said own vehicle from a point in time upon determining that said own vehicle is trying to start turning left or right by said turning-right-or-left-start-determination-means to said current point in time, using at least said yaw rate;
calculate a value based on a product of said estimated turning radius and a remaining turning angle, which is an angle obtained by subtracting said calculated turning angle from a predetermined angle, as an effective length of said expected route;
determine whether or not a target object of alerting exists, which is an object that crosses a part within said effective length of said expected route within a predetermined time, using said object information; and
generate said request signal upon determining that said target object of alerting exists.
1 Assignment
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Accused Products
Abstract
A driving support apparatus estimates an expected route of an own vehicle, calculates an effective length of the expected route, and alerts a driver of the own vehicle when it is determined that there exists an object which crosses a part within the effective length within a predetermined time. A formula of a circle with a radius of an estimated turning radius is used for an expected route formula expressing the expected route. Once it is determined that the own vehicle is trying to start turning left or right, the driving support apparatus calculates a turning angle of the own vehicle, and calculates the effective length of the expected route using a value based on a product of the estimated turning radius and a remaining turning angle which is an angle obtained by subtracting the turning angle from a predetermined angle.
8 Citations
10 Claims
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1. A driving support apparatus comprising:
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object information acquisition means for acquiring object information including a position of an object existing around an own vehicle with respect to said own vehicle, a moving direction of said object, and a moving speed of said object, using a first sensor apparatus mounted in said own vehicle; own vehicle information acquisition means for acquiring own vehicle information including an own vehicle speed which is a vehicle speed of said own vehicle, a yaw rate of said own vehicle, and a direction indicator signal showing a state of a direction indicator of said own vehicle, using a second sensor apparatus mounted in said own vehicle; turning-right-or-left-start-determination-means for determining whether or not said own vehicle is trying to start turning left or right based on said own vehicle information; expected route estimation means for estimating an expected route of said own vehicle at a current point in time based on said own vehicle speed and said yaw rate upon determining that said own vehicle is trying to start turning left or right; alert request means for generating a request signal to alert a driver of said own vehicle based on said object information and said expected route; and alerting means for conducting an operation to alert said driver in response to said request signal, wherein; said expected route estimation means is configured to use a formula of a circle as an expected route formula expressing said expected route, a center of said circle is positioned at a position shifted from a current position of said own vehicle in a direction perpendicular to a traveling direction of said own vehicle at a current point in time by a length of an estimated turning radius estimated using at least said yaw rate at said current point in time to a left side with respect to said traveling direction when said own vehicle is turning left and to a right side with respect to said traveling direction when said own vehicle is turning right, a radius of said circle is said estimated turning radius, and said alert request means is configured to; calculate a turning angle of said own vehicle from a point in time upon determining that said own vehicle is trying to start turning left or right by said turning-right-or-left-start-determination-means to said current point in time, using at least said yaw rate; calculate a value based on a product of said estimated turning radius and a remaining turning angle, which is an angle obtained by subtracting said calculated turning angle from a predetermined angle, as an effective length of said expected route; determine whether or not a target object of alerting exists, which is an object that crosses a part within said effective length of said expected route within a predetermined time, using said object information; and generate said request signal upon determining that said target object of alerting exists. - View Dependent Claims (2, 3, 4, 5)
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6. A driving support apparatus comprising:
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a driving support electronic control unit configured to; acquire object information including a position of an object existing around an own vehicle with respect to said own vehicle, a moving direction of said object, and a moving speed of said object, using a first sensor apparatus mounted in said own vehicle; acquire own vehicle information including an own vehicle speed which is a vehicle speed of said own vehicle, a yaw rate of said own vehicle, and a direction indicator signal showing a state of a direction indicator of said own vehicle, using a second sensor apparatus mounted in said own vehicle; determine whether or not said own vehicle is trying to start turning left or right based on said own vehicle information; estimate an expected route of said own vehicle at a current point in time based on said own vehicle speed and said yaw rate upon determining that said own vehicle is trying to start turning left or right, where a formula of a circle is used as an expected route formula expressing said expected route; and generate a request signal to alert a driver of said own vehicle based on said object information and said expected route; and a warning electronic control unit configured to conduct an operation to alert said driver in response to said request signal, wherein; a center of said circle is positioned at a position shifted from a current position of said own vehicle in a direction perpendicular to a traveling direction of said own vehicle at a current point in time by a length of an estimated turning radius estimated using at least said yaw rate at said current point in time to a left side with respect to said traveling direction when said own vehicle is turning left and to a right side with respect to said traveling direction when said own vehicle is turning right, a radius of said circle is said estimated turning radius, and said driving support electronic control unit is configured to; calculate a turning angle of said own vehicle from a point in time upon determining that said own vehicle is trying to start turning left or right to said current point in time, using at least said yaw rate; calculate a value based on a product of said estimated turning radius and a remaining turning angle, which is an angle obtained by subtracting said calculated turning angle from a predetermined angle, as an effective length of said expected route; determine whether or not a target object of alerting exists, which is an object that crosses a part within said effective length of said expected route within a predetermined time, using said object information; and generate said request signal upon determining that said target object of alerting exists. - View Dependent Claims (7, 8, 9, 10)
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Specification