Vehicle lane departure warning system and method
First Claim
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1. A vehicle lane departure warning system comprising:
- a position sensor for sensing position of a vehicle;
memory storing learned vehicle path data;
a controller for processing the sensed position and determining a stored learned vehicle path that the vehicle is travelling on, said controller comprising logic for comparing the sensed position to the stored learned vehicle path and determining if the vehicle is sufficiently departing from the stored learned path bysensing position of a vehicle and generating position data,processing the sensed position data of the vehicle,determining a learned vehicle path that the vehicle is travelling on based on the sensed position data,applying a confidence level to the learned vehicle path, wherein the confidence level provides an indication as to the number of times the vehicle path has been traveled by the vehicle,updating a learned path when the confidence level is less than the threshold value;
storing the learned vehicle path in memory,updating the stored learned vehicle path as the vehicle repeatedly travel on the path;
comparing the sensed position to the stored learned vehicle path,determining whether the vehicle is sufficiently departing from the stored learned vehicle path based on the comparison, andproviding a warning signal indication output if the vehicle is determined to be departing from the stored learned vehicle path; and
an output for providing a warning signal indicative of the vehicle departing from the stored learned path.
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Abstract
A vehicle lane departure warning system and method are provided. The system includes a position sensor for sensing position of a vehicle and memory storing learned vehicle path data. The system further includes a controller for processing the position data and determining a stored learned vehicle path that the vehicle is travelling on. The controller comprises logic for comparing the sensed position data to the stored learned vehicle path and determining if the vehicle is sufficiently departing from the stored learn vehicle path. The system further includes an output for providing a warning signal indicative of the vehicle departing from the stored learned vehicle path. The stored learned vehicle path is updated as the vehicle repeatedly travels on the path.
14 Citations
15 Claims
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1. A vehicle lane departure warning system comprising:
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a position sensor for sensing position of a vehicle; memory storing learned vehicle path data; a controller for processing the sensed position and determining a stored learned vehicle path that the vehicle is travelling on, said controller comprising logic for comparing the sensed position to the stored learned vehicle path and determining if the vehicle is sufficiently departing from the stored learned path by sensing position of a vehicle and generating position data, processing the sensed position data of the vehicle, determining a learned vehicle path that the vehicle is travelling on based on the sensed position data, applying a confidence level to the learned vehicle path, wherein the confidence level provides an indication as to the number of times the vehicle path has been traveled by the vehicle, updating a learned path when the confidence level is less than the threshold value; storing the learned vehicle path in memory, updating the stored learned vehicle path as the vehicle repeatedly travel on the path; comparing the sensed position to the stored learned vehicle path, determining whether the vehicle is sufficiently departing from the stored learned vehicle path based on the comparison, and providing a warning signal indication output if the vehicle is determined to be departing from the stored learned vehicle path; and an output for providing a warning signal indicative of the vehicle departing from the stored learned path. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of monitoring movement of a vehicle on a roadway and warning of a lane departure, said method comprising the steps of:
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sensing position of a vehicle and generating position data; processing the sensed position data of the vehicle; determining a learned vehicle path that the vehicle is travelling on based on the sensed position data; applying a confidence level to the learned vehicle path, wherein the confidence level provides an indication as to the number of times the vehicle path has been traveled by the vehicle; updating a learned path when the confidence level is less than the threshold value; storing the learned vehicle path in memory; updating the stored learned vehicle path as the vehicle repeatedly travel on the path; comparing the sensed position to the stored learned vehicle path; determining whether the vehicle is sufficiently departing from the stored learned vehicle path based on the comparison; and providing a warning signal indication output if the vehicle is determined to be departing from the stored learned vehicle path. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification
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Current AssigneeAptiv Technologies AG
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Original AssigneeDelphi Technologies, Inc. (BorgWarner Incorporated)
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InventorsMurphy, Morgan D., Nunan, Douglas A.
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Primary Examiner(s)Mehmood, Jennifer
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Assistant Examiner(s)Rushing, Mark
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Application NumberUS12/334,627Publication NumberTime in Patent Office1,121 DaysField of Search340/435, 340/436, 340/439, 340/905, 340/937, 340/939, 701/29, 701/36, 701/300, 701/301, 348/148US Class Current340/436CPC Class CodesB60W 30/12 Lane keepingB62D 1/02 vehicle-mountedB62D 15/029 Steering assistants using w...
