Vehicle braking assist device and vehicle braking assist method
First Claim
1. A vehicle braking assist device for a host vehicle comprising:
- a risk potential computing device that computes a risk potential of the host vehicle with respect to an obstacle in the travelling direction of the host vehiclebased on a computed arrival time or distance to the obstacle;
a sensor that detects an operation state of an accelerator;
a braking force application device; and
a controller that controls the braking force assist device to;
(1) apply a breaking force when the risk potential exceeds a first threshold, but not a second threshold, unless the operation state of the accelerator exceeds a prescribed value, thus overriding the breaking assist device; and
(2) apply a breaking force irrespective of the operation state of the accelerator when the risk potential exceeds the second threshold that is greater than the first threshold.
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Accused Products
Abstract
A vehicle braking assist device for a host vehicle includes a risk potential computing part that computes a risk potential of the host vehicle with respect to an obstacle in the travelling direction of the host vehicle, an accelerator operation state sensor that detects the operation state of an accelerator, and a braking force application device that applies a first braking force on the host vehicle when the risk potential is higher than a predetermined first threshold and the detected operation state of the accelerator indicates that the accelerator is not being operated, and that applies a second braking force on the host vehicle irrespective of the operation state of the accelerator when the risk potential is higher than a predetermined second threshold, the risk potential represented by the second threshold being higher than the risk potential represented by the first threshold.
14 Citations
17 Claims
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1. A vehicle braking assist device for a host vehicle comprising:
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a risk potential computing device that computes a risk potential of the host vehicle with respect to an obstacle in the travelling direction of the host vehicle based on a computed arrival time or distance to the obstacle; a sensor that detects an operation state of an accelerator; a braking force application device; and a controller that controls the braking force assist device to; (1) apply a breaking force when the risk potential exceeds a first threshold, but not a second threshold, unless the operation state of the accelerator exceeds a prescribed value, thus overriding the breaking assist device; and (2) apply a breaking force irrespective of the operation state of the accelerator when the risk potential exceeds the second threshold that is greater than the first threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of assisting vehicle braking of a host vehicle comprising:
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detecting a risk potential of the host vehicle with respect to an obstacle in a travelling direction of the host vehicle based on a computed arrival time or distance to the obstacle; detecting an operating state of an accelerator of the host vehicle; and (1) applying a breaking force when the risk potential exceeds a first threshold, but not a second threshold, unless the operation state of the accelerator exceeds a prescribed value, thus overriding a breaking assist device; and (2) applying a breaking force irrespective of the operation state of the accelerator when the risk potential exceeds the second threshold that is greater than the first threshold.
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17. A vehicle braking assist device for a host vehicle comprising:
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risk potential computing means that computes a risk potential of the host vehicle with respect to an obstacle in the travelling direction of the host vehicle based on a computed arrival time or distance to the obstacle; accelerator detecting means that detects an operation state of an accelerator; braking force application means; and a controller that controls the braking force assist device to; (1) apply a breaking force when the risk potential exceeds a first threshold, but not a second threshold, unless the operation state of the accelerator exceeds a prescribed value, thus overriding the breaking assist device; and (2) apply a breaking force irrespective of the operation state of the accelerator when the risk potential exceeds the second threshold that is greater than the first threshold.
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Specification