Vehicle warning apparatus for generating warning signal depending upon operator's brake operating characteristics
First Claim
1. A warning apparatus for an automotive vehicle, operable to generate a warning signal when a distance between the vehicle and an object existing in front of the vehicle is shorter than a predetermined threshold value, comprising:
- a characteristic-value storage portion which stores at least one characteristic-value relationship between at least two of a plurality of brake operating characteristic values relating to a braking operation by an operator of the vehicle to brake the vehicle; and
a threshold-value determining portion operable to determine said threshold value of said distance, on the basis of at least one of;
an estimated braking state of the vehicle estimated on the basis of said at least one characteristic-value relationship stored in said characteristic-value storage portion;
a running-state quantity indicative of a running state of the vehicle; and
a moving-state quantity indicative of a moving state of said object.
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Accused Products
Abstract
Warning apparatus for an automotive vehicle, operable to generate a warning signal when a distance between the vehicle and an object in front of the vehicle is shorter than a predetermined threshold value, the apparatus including a characteristic-value storage portion which stores at least one characteristic-value relationship between at least two of a plurality of brake operating characteristic values relating to a braking operation by an operator of the vehicle to brake the vehicle, and a threshold-value determining portion operable to determine the threshold value of the distance, on the basis of at least one of an estimated braking state of the vehicle estimated on the basis of the characteristic-value relationship stored in the characteristic-value storage portion, a running-state quantity indicative of a running state of the vehicle, and a moving-state quantity indicative of a moving state of the object.
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Citations
16 Claims
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1. A warning apparatus for an automotive vehicle, operable to generate a warning signal when a distance between the vehicle and an object existing in front of the vehicle is shorter than a predetermined threshold value, comprising:
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a characteristic-value storage portion which stores at least one characteristic-value relationship between at least two of a plurality of brake operating characteristic values relating to a braking operation by an operator of the vehicle to brake the vehicle; and
a threshold-value determining portion operable to determine said threshold value of said distance, on the basis of at least one of;
an estimated braking state of the vehicle estimated on the basis of said at least one characteristic-value relationship stored in said characteristic-value storage portion;
a running-state quantity indicative of a running state of the vehicle; and
a moving-state quantity indicative of a moving state of said object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A warning apparatus for an automotive vehicle, operable to generate a warning signal when a distance between the vehicle and an object existing in front of the vehicle is shorter than a predetermined threshold value, comprising a threshold-value determining portion operable to determine said threshold value of said distance, on the basis of at least one of
(a) an estimated braking-delay time which is an estimated time duration between a moment at which an operator of the vehicle feels it necessary to initiate a braking operation to brake the vehicle and a moment at which said braking operation is actually initiated; -
(b) an estimated vehicle deceleration value which is an estimated value of deceleration of the vehicle as a result of said braking operation by the operator;
(c) a critical-relative-position quantity relating to a relative position between the vehicle and said object, at which the operator feels it necessary to initiate said braking operation; and
(d) a moving-state quantity indicative of a moving sate of said object.
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15. A warning apparatus for an automotive vehicle, operable to generate a warning signal when a relative-position quantity relating to a relative position between the vehicle and an object in front of the vehicle is on a predetermined one side of a predetermined threshold value on which a distance between the vehicle and said object is shorter than on the other side, comprising:
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a characteristic-value storage portion which stores at least one characteristic-value relationship between at least two of a plurality of brake operating characteristic values relating to a braking operation by an operator of the vehicle to brake the vehicle; and
a threshold-value determining portion operable to determine said threshold value of said relative-position quantity on the basis of at least one of;
an estimated braking state of the vehicle estimated on the basis of said at least one characteristic-value relationship stored in said characteristic-value storage portion; and
a moving-state quantity indicative of a moving state of said object.
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16. A warning apparatus for an automotive vehicle, operable to generate a warning signal when a distance between the vehicle and an object existing in front of the vehicle is shorter than a predetermined threshold value, characterized by comprising:
a threshold-value determining portion operable to determine said threshold value of said distance on the basis of at least one of (a) a running state of the vehicle and (b) a running environment of the vehicle, and at least one of (i) a running-state quantity indicative of said running state of the vehicle and (ii) a moving-state quantity indicative of a moving state of said object.
Specification