Method and apparatus for generating and using driver specific vehicle controls

• US 9,573,600 B2
• Filed: 12/19/2014
• Issued: 02/21/2017
• Est. Priority Date: 12/19/2014
• Status: Active Grant

• Current Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Gunaratne, Pujitha
• Primary Examiner(s): Dager, Jonathan M
• Application Number:
  US14/577,958
• Publication Number:
  US 20160176412A1
• Time in Patent Office: 795 Days
• US Class Current: 1/1
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2050/0005 Processor details or data handling, e.g. memory registers or chip architecture
• CPC Class Codes: B60W 2050/0014 Adaptive controllers
• CPC Class Codes: B60W 2050/0095 Automatic control mode change
• CPC Class Codes: B60W 2420/403 Image sensing, e.g. optical camera
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2540/30 Driving style
• CPC Class Codes: B60W 2552/05 Type of road, e.g. motorways, local streets, paved or unpaved roads
• CPC Class Codes: B60W 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2554/406 Traffic density
• CPC Class Codes: B60W 2554/802 Longitudinal distance
• CPC Class Codes: B60W 2555/20 Ambient conditions, e.g. wind or rain
• CPC Class Codes: B60W 2556/00 Input parameters relating to data
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 2720/30 Wheel torque
• CPC Class Codes: B60W 30/02 Control of vehicle driving stability
• CPC Class Codes: B60W 40/09 : Driving style or behaviour
• CPC Class Codes: B60W 50/12 : Limiting control by the driver depending on vehicle state, e.g. interlocking means for the control input for preventing unsafe operation

Abstract

A driver-specific vehicle control method is provided that can adjust one or more vehicle control systems in response to a difference in current driver driving characteristics with respect to safe driver driving characteristics on the same roadway type and vehicle operating conditions. The method maintains a driver score for each driver of a vehicle, in the form of a set of the driver'"'"'s driving characteristics scores for each different roadway type. The method, via a control apparatus, determines a current position of the vehicle on a roadway and the roadway features to select the appropriate driver score for comparison. When the driver'"'"'s score exceeds a threshold difference from a safe driver score on the same roadway type, the method can adjust a control system parameter.

Claims

1. A method for implementing driver specific vehicle controls in a vehicle operating in a manual operational mode, the method comprising:

determining a driver'"'"'s driving characteristics for a plurality of roadway features, roadway conditions, traffic conditions, and weather conditions in a vehicle having a plurality of adjustable vehicle control systems;

determining a current roadway type over which the vehicle is moving;

accessing a driver'"'"'s driving characteristics score for the current roadway type;

comparing the driver'"'"'s driving characteristics score for the current roadway type with safe driver driving characteristics for the current roadway type;

determining a number of times the vehicle drifts from the center of a lane in the current roadway type; and

in response to determining the number of vehicle drifts exceeds a predetermined threshold for the current roadway type, manipulating individual vehicle wheel torque to control the vehicle.

2. The method of claim 1 further comprising:

based on the comparison, selecting an additional vehicle control system parameter for adjustment if the driver'"'"'s driving characteristics exceeds the safe driver driving characteristics by a threshold amount; and

actuating a vehicle control system by the selected vehicle control system parameter for adjustment, wherein the adjustable vehicle control systems include at least one of vehicle traction control, vehicle stability control, vehicle acceleration, and vehicle braking.

3. The method of claim 1 further comprising:

determining the number of times the vehicle drifts from a center of a lane of a roadway using at least one camera mounted on the vehicle, wherein the camera is positioned to image lane markers on both sides of a lane on the roadway.

4. The method of claim 1 further comprising:

determining different driver driving characteristic scores for one or more of a straight roadway, a curved roadway, an urban roadway, a highway, a rural roadway and a multilane roadway.

5. The method of claim 1 further comprising:

determining different driver driving characteristic scores for one or more of a straight urban roadway, a straight highway, a straight rural roadway, a curved urban roadway, a curved highway, a curved rural roadway, a congested traffic urban roadway, a congested traffic highway, an urban traffic light, and an urban stop sign.

6. The method of claim 1 further comprising:

determining a driver'"'"'s driving characteristic score based on one or more of a driver'"'"'s skill level, a driver'"'"'s years of driving experience, a driver'"'"'s driving violations, and a driver'"'"'s collisions.

7. The method of claim 1 further comprising:

providing vehicle sensor outputs including one or more of outputs from at least one camera, a radar, map data, a GPS, a collision, acceleration and deceleration, and braking pedal force.

8. A method for implementing driver specific vehicle controls in a vehicle operating in a manual operational mode and having a plurality of vehicle control systems with adjustable parameters, the method comprising:

providing a vehicle with one or more sensors capturing one or more outputs from at least one camera, a radar, map data, GPS, collision detectors, acceleration and deceleration sensors, and braking pedal force sensors;

providing a processor executing a control program with instructions to;

determine a driver'"'"'s driving characteristics for a plurality of roadway features, roadway conditions, traffic conditions and weather condition;

determine a current roadway type over which the vehicle is moving;

access a driver'"'"'s driving characteristics score for the current roadway type;

compare the driver'"'"'s driving characteristics score for the current roadway type with safe driver driving characteristics for the current roadway type;

determining a number of times the vehicle drifts from the center of a lane in the current roadway type; and

in response to determining the number of vehicle drifts exceeds a predetermined threshold for the current roadway type, manipulating individual vehicle wheel torque to control the vehicle.

9. The method of claim 8 wherein the processor is further configured to:

based on the comparison, select an additional vehicle control system parameter for adjustment if the driver'"'"'s driving characteristics exceeds the safe driver driving characteristics by a threshold amount; and

actuate a vehicle control system by the selected vehicle control system parameter for adjustment, wherein the adjustable vehicle control systems includes at least one of vehicle traction control, vehicle stability control, vehicle acceleration, and vehicle braking.

10. The method of claim 8 wherein the processor is further configured to:

determine the number of times the vehicle drifts from a center of a lane of a roadway using at least one camera mounted on the vehicle, wherein the camera is positioned to image lane markers on both sides of a lane on the roadway.

11. The method of claim 8 wherein the processor is further configured to:

determine different driver driving characteristic scores for one or more of a straight roadway, a curved roadway, an urban roadway, a highway, a rural roadway, and a multilane roadway.

12. The method of claim 8 wherein the processor is further configured to:

determine different driver driving skill characteristic scores for one or more of a straight urban roadway, a straight highway, a straight rural roadway, a curved urban roadway, a curved highway, a curved rural roadway, a congested traffic urban roadway, a congested traffic highway, an urban traffic light, and an urban stop sign.

13. The method of claim 8 wherein the processor is further configured to:

determine the driver'"'"'s driving characteristic score based on one or more of a driver'"'"'s skill level, a driver'"'"'s years of driving experience, a driver'"'"'s driving violations, and a driver'"'"'s collisions.