Systems and methods for anticipatory tire pressure control

• US 9,511,634 B2
• Filed: 10/30/2014
• Issued: 12/06/2016
• Est. Priority Date: 10/30/2014
• Status: Expired due to Fees

• Current Assignee: Elwha LLC (Intellectual Ventures LLC)
• Original Assignee: Elwha LLC (Intellectual Ventures LLC)
• Inventors: Chan, Alistair K., Deane, Geoffrey F., Duncan, William D., Eckhoff, Philip A., Ferren, Bran, Gates, William, Hillis, W. Daniel, Hyde, Roderick A., Ishikawa, Muriel Y., Jung, Edward K. Y., Kare, Jordin T., Latham, John, Myhrvold, Nathan P., Petroski, Robert C., Tegreene, Clarence T., Tuckerman, David B., Weaver, Thomas A., Whitmer, Charles, Wood, Lowell L. Jr., Wood, Victoria Y. H.
• Primary Examiner(s): Kan, Yuri
• Application Number:
  US14/528,709
• Publication Number:
  US 20160121666A1
• Time in Patent Office: 768 Days
• Field of Search: 701/1, 701/36, 701/123, 455/3.05, 348/148, 340/442
• US Class Current: 1/1
• CPC Class Codes: B60C 23/002 by monitoring conditions other than tyre pressure or deformation
• CPC Class Codes: B60C 23/20 Devices for measuring or signalling tyre temperature only

Abstract

A vehicle tire pressure control system includes a road sensor configured to acquire road data regarding a road at an advanced location ahead of a current location of a vehicle; a pressure regulator configured to control the air pressure within a tire of the vehicle during operation of the vehicle; and a controller configured to control operation of the pressure regulator and vary the air pressure within the tire based on the road data.

Claims

1. A vehicle tire pressure control system, comprising:

a road sensor configured to acquire road data regarding a road at an advanced location ahead of a current location of a vehicle;

a pressure regulator configured to control the air pressure within a tire of the vehicle during operation of the vehicle; and

a controller configured to determine a target pressure for the tire based on the road data corresponding to the advanced location, and control operation of the pressure regulator based on the target pressure and the advanced location such that the air pressure of the tire is at the target pressure before the vehicle arrives at the advanced location.

2. The system of claim 1, wherein the road sensor includes at least one of a radar device, a lidar device, a multi-spectral sensor, a polarization sensor, an infrared sensor device, and an ultraviolet sensor.

3. The system of claim 1, wherein the road sensor includes a micropower impulse radar device.

4. The system of claim 1, wherein the road sensor includes a Doppler sensor.

5. The system of claim 1, wherein the road sensor includes at least one of a still image camera and a video camera.

6. The system of claim 1, wherein the road data includes a surface state of the road at the advanced location.

7. The system of claim 6, wherein the surface state includes at least one of a degree of wetness, a depth of water, a presence of snow or ice, a presence of oil, a presence of a hole, a presence of surface roughness, or a presence of an obstacle.

8. The system of claim 1, wherein the road data includes a surface type of the road at the advanced location.

9. The system of claim 8, wherein the surface type includes at least one of gravel, dirt, concrete, asphalt, or pavement.

10. The system of claim 1, wherein the road data provides an indication of an upcoming curve in the road.

11. The system of claim 1, wherein the road data provides an indication of an upcoming change in elevation of the road.

12. The system of claim 1, further comprising a tire sensor configured to acquire tire data regarding the tire;

wherein the controller is further configured to control operation of the pressure regulator based on the tire data.

13. The system of claim 12, wherein the tire data further includes at least one of a temperature of the tire, a tread condition of the tire, a tread pattern of the tire, a width of the tire, and a compliance of the tire.

14. The system of claim 1, wherein the controller is configured to:

determine a predicted tire condition for the advanced location;

monitor an actual tire condition at the advanced location; and

adjust a target air pressure for the tire based on the predicted and actual tire conditions at the advanced location.

15. A vehicle, comprising:

a tire configured to support at least a portion of the vehicle; and

a tire pressure control system configured to control the air pressure within the tire during operation of the vehicle, the tire pressure control system including;

a road sensor configured to acquire road data regarding a road at an advanced location ahead of a current location of the vehicle;

a pressure regulator configured to control the air pressure within the tire during operation of the vehicle; and

a controller configured to determine a target pressure for the tire based on the road data corresponding to the advanced location, and control operation of the pressure regulator based on the target pressure and the advanced location such that the air pressure of the tire is already at the target pressure when the vehicle arrives at the advanced location.

16. The vehicle of claim 15, wherein the road sensor includes at least one of a radar device, a lidar device, a multi-spectral sensor, a polarization sensor, an infrared sensor device, and an ultraviolet sensor.

17. The vehicle of claim 15, wherein the road sensor includes a micropower impulse radar device.

18. The vehicle of claim 15, wherein the road sensor includes a Doppler sensor.

19. The vehicle of claim 15, wherein the road sensor includes at least one of a still image camera and a video camera.

20. The vehicle of claim 15, further comprising a tire sensor configured to acquire tire data regarding the tire;

wherein the controller is further configured to control operation of the pressure regulator based on the tire data.

21. The vehicle of claim 20, wherein the tire data further includes at least one of a temperature of the tire, a tread condition of the tire, a tread pattern of the tire, a width of the tire, and a compliance of the tire.

22. The vehicle of claim 15, wherein the controller is configured to control operation of the pressure regulator further based on at least at least one of a weight of the vehicle and a load distribution of the vehicle.

23. The vehicle of claim 15, wherein the controller is configured to control operation of the pressure regulator to optimize at least one of a speed, handling, and a fuel efficiency at the advanced location based on a user input.

24. The vehicle of claim 15, wherein the controller is configured to:

determine a predicted tire condition for the advanced location;

monitor an actual tire condition at the advanced location; and

adjust a target air pressure for the tire based on the predicted and actual tire conditions at the advanced location.

25. A tire pressure control system, comprising:

a road sensor configured to acquire road data regarding an advanced location ahead of a current location of a vehicle on a road;

an environment sensor configured to acquire environment data regarding an environment at an exterior of the vehicle;

a vehicle sensor configured to acquire vehicle data regarding operation of the vehicle;

a pressure regulator configured to control an internal pressure of a tire; and

a controller configured to;

determine a target air pressure for the tire based on the road data, environment data, and the vehicle data; and

control operation of the pressure regulator based on the target pressure and a current air pressure of the tire such that the air pressure of the tire is at the target pressure as the vehicle arrives at the advanced location.

26. The system of claim 25, wherein the road data provides an indication of an upcoming curve in the road.

27. The system of claim 25, wherein the road data provides an indication of an upcoming change in elevation of the road.

28. The system of claim 25, wherein the tire includes a plurality of tires, and wherein the controller is configured to control operation of the pressure regulator to vary the air pressure between tires.

29. The system of claim 25, wherein the controller is configured to control operation of the pressure regulator to vary the air pressure between tires based on at least one of an anticipated turn in the road, a loading distribution of the vehicle, a tire condition for each of the plurality of tires, and a spatial difference between road conditions.

30. The system of claim 25, wherein the controller is configured to:

determine a predicted tire condition at the advanced location;

monitor an actual tire condition at the advanced location; and

adjust a target air pressure for the tire based on the predicted and actual tire conditions at the advanced location.

31. The system of claim 30, wherein the controller includes a memory, and wherein the controller is configured to store historic data regarding at least one of a tire pressure, tire data, and a road condition for the current location of the vehicle in the memory.

32. The system of claim 31, wherein the controller is configured to control operation of the pressure regulator further based on the historic data.