US6092005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle driving condition prediction device and warning device
Assignee: Toyota Motor Corp
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Filing: 1997-07-14
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Granted: 2000-07-18
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Expires: 2017-07-14
Abstract
Abstract A vehicle driving condition prediction device, a warning device using this prediction device, and a recording medium for storing data for prediction, wherein during use of the prediction function of an approach speed of the vehicle to a curve ahead, the acceleration at the present moment is maintained for a condition maintaining period of time, and thereafter the vehicle speed is slowed down at a fixed deceleration, and using such an assumed deceleration pattern a vehicle speed in future is predicted, by which a warning can be given taking the chances of driver's deceleration into consideration.
Inventors
- 👤 Akio Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:42
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/26; G01P; G01P15/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
68 words
A device for predicting a lateral acceleration of a vehicle in an upcoming curve, comprising: a detector which detects a current acceleration or deceleration of the vehicle, wherein a vehicle speed upon entering a curve is predicted according to a predetermined acceleration/deceleration pattern, the predetermined acceleration/deceleration pattern determined based on the current acceleration/deceleration of the vehicle and said lateral acceleration is predicted according to said predicted vehicle speed.
Claim 2
Independent Claim
68 words
A device for predicting a lateral acceleration of a vehicle in an upcoming curve, comprising: a detector which detects a current acceleration or deceleration of the vehicle, wherein a vehicle speed upon entering a curve is predicted according to a predetermined acceleration/deceleration pattern, the predetermined acceleration/deceleration pattern determined based on the current acceleration/deceleration of the vehicle and said lateral acceleration is predicted according to said predicted vehicle speed.
Claim 3
Dependent Claim
22 words
A vehicle driving condition prediction device according to claim 1, wherein said predetermined acceleration/deceleration pattern takes a present driving condition into consideration.
Claim 4
Dependent Claim
29 words
A vehicle driving condition prediction device according to claim 2, wherein said acceleration/deceleration pattern takes said present driving condition into consideration for a predetermined condition maintaining period of time.
Claim 5
Dependent Claim
41 words
A vehicle driving condition prediction device according to claim 1, wherein said acceleration/deceleration pattern is such that said present driving condition is maintained for said predetermined period of time, and thereafter the vehicle speed is slowed down at a predetermined deceleration.
Claim 6
Dependent Claim
20 words
A vehicle driving condition prediction device according to claim 1, said predetermined acceleration/deceleration pattern takes a longitudinal slope into consideration.
Claim 7
Dependent Claim
51 words
A vehicle driving condition prediction device according to claim 5, wherein said acceleration/deceleration pattern is such that said present acceleration/deceleration is maintained for a predetermined period of time, and the vehicle speed is slowed down at a predetermined deceleration, said predetermined deceleration taking said longitudinal slope of the road into consideration.
Claim 8
Dependent Claim
27 words
A vehicle driving condition prediction device according to claim 6, wherein said predetermined deceleration has the fixed deceleration varied according to said longitudinal slope of the road.
Claim 9
Dependent Claim
30 words
A vehicle driving condition prediction device according to claim 1, wherein said predetermined acceleration/deceleration pattern takes a speed limit of the road on which the vehicle is running into consideration.
Claim 10
Dependent Claim
48 words
A vehicle driving condition prediction device according to claim 1, further comprising a data base containing data on curvatures of curves and data on longitudinal slopes of roads, wherein said lateral acceleration is predicted from both a curvature of a curve and a longitudinal slope of a road.
Claim 11
Dependent Claim
89 words
A warning device for predicting a lateral acceleration of a vehicle in an upcoming curve and producing a warning according to a predicted lateral acceleration, comprising: a vehicle speed predicting device that predicts a vehicle speed as a vehicle approaches an upcoming curve according to a predetermined acceleration/deceleration pattern; and a warning element, wherein a maximum lateral acceleration in a curve ahead is predicted according to the predicted vehicle speed, and wherein if said predicted maximum lateral acceleration is higher than a predetermined lateral acceleration, a warning is issued.
Claim 12
Dependent Claim
89 words
A warning device for predicting a lateral acceleration of a vehicle in an upcoming curve and producing a warning according to a predicted lateral acceleration, comprising: a vehicle speed predicting device that predicts a vehicle speed as a vehicle approaches an upcoming curve according to a predetermined acceleration/deceleration pattern; and a warning element, wherein a maximum lateral acceleration in a curve ahead is predicted according to the predicted vehicle speed, and wherein if said predicted maximum lateral acceleration is higher than a predetermined lateral acceleration, a warning is issued.
Claim 13
Dependent Claim
43 words
A warning device according to claim 10, further comprising: a data base containing data on curvatures of curves and data on cants of roads, wherein said lateral acceleration is predicted from both a curvature of a curve and a cant of a road.
Claim 14
Independent Claim
80 words
A device for predicting a lateral acceleration of a vehicle when passing through an upcoming curve, comprising: a detector which detects a current acceleration/deceleration of the vehicle, wherein a vehicle speed upon entering the upcoming curve is predicted according to a predetermined acceleration/deceleration pattern, said predetermined acceleration/deceleration pattern including a first phase of maintaining the current state during a first predetermined period and a second phase of deceleration, and said lateral acceleration is predicted according to the predicted vehicle speed.
Claim 15
Independent Claim
80 words
A device for predicting a lateral acceleration of a vehicle when passing through an upcoming curve, comprising: a detector which detects a current acceleration/deceleration of the vehicle, wherein a vehicle speed upon entering the upcoming curve is predicted according to a predetermined acceleration/deceleration pattern, said predetermined acceleration/deceleration pattern including a first phase of maintaining the current state during a first predetermined period and a second phase of deceleration, and said lateral acceleration is predicted according to the predicted vehicle speed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-18 | 2004-01-17 | 2004-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-18 | 2008-01-17 | 2008-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-18 | 2012-01-17 | 2012-07-18 | $7700.00 | Window Closed / Lapsed |