ADAPTIVE VEHICLE CONTROL SYSTEM WITH DRIVING STYLE RECOGNITION BASED ON MANEUVERS AT HIGHWAY ON/OFF RAMPS
First Claim
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1. A method for identifying whether a vehicle maneuver is an on-ramp or off-ramp maneuver, said method comprising:
- reading a vehicle speed signal and a vehicle yaw rate signal from vehicle sensors;
determining whether the vehicle is turning by determining whether the vehicle yaw rate signal is greater than a first yaw rate threshold and, if so, determining that the vehicle has entered a curve that may be a curve portion of a highway on/off ramp;
determining whether the vehicle has exited the curve by determining whether the vehicle yaw rate signal is less than a second yaw rate threshold;
determining whether the difference between the vehicle speed at the beginning of the curve and at the end of the is less than a first vehicle speed threshold and, if so, determining that the curve-handling maneuver is an off-ramp maneuver;
determining whether the increase in vehicle speed during a predetermined time window is less than a second speed threshold;
determining whether the vehicle speed during a predetermined time window of the maneuver is greater than a third speed threshold;
determining whether a difference of the vehicle speed during the time window minus the speed at the start time is greater than a fourth speed threshold; and
determining that the maneuver is an on-ramp maneuver if the increase in the vehicle speed becomes less than the second speed threshold and the speed of the vehicle during the predetermined time window is greater than the third speed threshold and the difference in the vehicle speed during the time window minus the speed of the vehicle at the start time is greater than the fourth speed threshold.
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Abstract
An adaptive vehicle control system that classifies a driver'"'"'s driving style based on highway on/off ramp maneuvers. Once the maneuver has been determined to be an on-ramp maneuver or an off-ramp maneuver, a style characterization processor can classify the maneuver using selected discriminant features obtain or derived from the maneuver.
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Citations
31 Claims
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1. A method for identifying whether a vehicle maneuver is an on-ramp or off-ramp maneuver, said method comprising:
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reading a vehicle speed signal and a vehicle yaw rate signal from vehicle sensors; determining whether the vehicle is turning by determining whether the vehicle yaw rate signal is greater than a first yaw rate threshold and, if so, determining that the vehicle has entered a curve that may be a curve portion of a highway on/off ramp; determining whether the vehicle has exited the curve by determining whether the vehicle yaw rate signal is less than a second yaw rate threshold; determining whether the difference between the vehicle speed at the beginning of the curve and at the end of the is less than a first vehicle speed threshold and, if so, determining that the curve-handling maneuver is an off-ramp maneuver; determining whether the increase in vehicle speed during a predetermined time window is less than a second speed threshold; determining whether the vehicle speed during a predetermined time window of the maneuver is greater than a third speed threshold; determining whether a difference of the vehicle speed during the time window minus the speed at the start time is greater than a fourth speed threshold; and determining that the maneuver is an on-ramp maneuver if the increase in the vehicle speed becomes less than the second speed threshold and the speed of the vehicle during the predetermined time window is greater than the third speed threshold and the difference in the vehicle speed during the time window minus the speed of the vehicle at the start time is greater than the fourth speed threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for identifying whether a vehicle maneuver is an on-ramp or off-ramp maneuver, said method comprising:
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reading a vehicle speed signal and a vehicle yaw rate signal in vehicle sensors; determining whether the vehicle is turning by determining whether the vehicle yaw rate signal is greater than a first yaw rate threshold and, if so, determining that the vehicle has entered a curve that may be a curve portion of a highway on/off ramp; determining whether the vehicle has exited the curve by determining whether the vehicle yaw rate signal is less than a second yaw rate threshold; determining whether the difference between the vehicle speed at the beginning of the curve and at the end of the is less than a first vehicle speed threshold and, if so, determining that the curve-handling maneuver is an off-ramp maneuver; determining whether the increase in vehicle speed during a predetermined time window is less than a second speed threshold; determining whether the vehicle speed during a predetermined time window of the maneuver is greater than a third speed threshold; determining whether a difference of the vehicle speed during the time window minus the speed at the start time is greater than a fourth speed threshold; determining that the maneuver is an on-ramp maneuver if the increase in the vehicle speed becomes less than the second speed threshold and the speed of the vehicle during the predetermined time window is greater than a third speed threshold and a difference in the vehicle speed during the time window minus the speed of the vehicle at the start time is greater than the fourth speed threshold; and classifying the vehicle maneuver to determine a driver'"'"'s driving style if the maneuver is an on-ramp or an off-ramp maneuver using selected discriminant features obtained or derived from the maneuver. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A system for identifying a vehicle maneuver as an on-ramp or off-ramp maneuver, said system comprising:
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vehicle sensors that provide a vehicle speed signal and a vehicle yaw rate signal; means for determining whether the vehicle is turning by determining whether the vehicle yaw rate signal is greater than a first threshold and, if so, determining that the vehicle has entered a curve that might be a curve portion of a highway on/off ramp; means for determining whether the vehicle has exited the curve by determining whether the vehicle yaw rate signal is less than a second yaw rate threshold; means for determining whether the difference between vehicle speed at the beginning of the curve and at the end of the curve is less than a first vehicle speed threshold and, if so, determining that the curve-handling maneuver is an off-ramp maneuver; means for determining whether the increase in vehicle speed during a predetermined time window is less than a second speed threshold; means for determining whether the vehicle speed during a predetermined time window of the maneuver is greater than a third speed threshold; means for determining whether a difference of the vehicle speed during the time window minus the speed at the start time is greater than a fourth speed threshold; and means for determining that the maneuver is an on-ramp maneuver if the increase in the vehicle speed becomes less than the second speed threshold and the speed of the vehicle during the predetermined time window is greater than the third speed threshold and the difference in the vehicle speed during the time window minus the of the vehicle at the start time speed is greater than the fourth speed threshold. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for identifying a vehicle highway on/off ramp maneuver, said method comprising:
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providing a vehicle speed signal from a speed sensor; providing a vehicle yaw rate signal from a vehicle yaw rate sensor; providing a steering angle signal from a steering angle sensor; providing a heading angle signal from a heading angle sensor; providing a vehicle acceleration signal from an acceleration sensor; providing a vehicle position signal from a position sensor; and using the sensor signals to determine whether the vehicle is in the highway on/off ramp maneuver.
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Specification