Vehicle interaction communication system

• US 7,382,274 B1
• Filed: 01/21/2000
• Issued: 06/03/2008
• Est. Priority Date: 01/21/2000
• Status: Expired due to Term

• Current Assignee: Carrum Technologies, LLC (Pratima Instruments, LLC)
• Original Assignee: Agere Systems Incorporated (Broadcom, Inc.)
• Inventors: Kermani, Bahram Ghaffarzadeh, Curtin, Steven DeArmond, McLellan, Scott Wayne
• Primary Examiner(s): Pope, Daryl C
• Application Number:
  US09/489,467
• Time in Patent Office: 3,056 Days
• Field of Search: 340/901, 340/903, 340/905, 340/933, 340/435, 340/436
• US Class Current: 340/901
• CPC Class Codes: B60K 2360/191 Highlight information
• CPC Class Codes: B60K 31/0058 responsive to externally generated signalling
• CPC Class Codes: B60K 35/29 Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
• CPC Class Codes: B60W 40/04 Traffic conditions
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G08G 1/096725 where the received information generates an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096741 where the source of the transmitted information selects which information to transmit to each vehicle
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: G08G 1/163 involving continuous checking

Abstract

The information available to a driver of a vehicle is greatly expanded using wireless communications (e.g., using Bluetooth wireless communication devices). In one embodiment, information regarding an adjacent vehicle such as a brake light, a turn light, speed, distance, direction, etc., is transmitted from one vehicle to a nearby or adjacent other vehicle. The received information is used in any appropriate manner, such as causing the receiving vehicle to change vehicle speed or brake, to turn to avoid a collision, etc. In a second embodiment, roadside wireless transceivers collect information regarding passing vehicles, and central database is compiled relating to a traffic conditions. The traffic condition information can be passed back to the passing vehicles for appropriate use, e.g., causing the driver to slow down, or even causing a navigation device in the receiving vehicle to manually prompt for or automatically recalculate a best route to an intended destination. In yet another embodiment, broadcast transmitters can be established at signs and other significant locations transmitting information to passing vehicles. The broadcast information may be as simple as indicating the existence of the sign, or depending upon the range of the particular wireless transmitter, the existence of a particular sign, bump in road, curve, etc., can be forewarned far in advance of when the driver will actually see the relevant object. Alternatively, the broadcast information may be quite detailed, e.g., containing a detailed itemization and directions to a large number of gas stations, restaurants, etc., reachable from a particular exit from a highway.

Claims

1. A vehicle safety system, comprising:

a wireless piconet transmitter to transmit a piconet signal to a second vehicle;

a measurer to measure at least one of a round-trip delay time of said piconet signal between said first vehicle and said second vehicle, and a received signal strength indicator (RSSI) from said second vehicle; and

a rudimentary ranging information determiner to determine rudimentary ranging information from at least one of said round-trip delay time and said RSSI.

2. The vehicle safety system according to claim 1, wherein:

at least one of a braking system, an accelerator control, and a steering control are at least one of enabled, disabled, and variably controlled based on said rudimentary ranging information.

3. The vehicle safety system according to claim 1, wherein:

a current speed of said first vehicle is adjusted based on said rudimentary ranging information.

4. The vehicle safety system according to claim 1, wherein:

said rudimentary ranging information allows a determination of a current direction of said second vehicle.

5. The vehicle safety system according to claim 1, wherein:

said rudimentary ranging information allows a determination of a desired fore and aft separation distance between said first vehicle and said second vehicle.

6. The vehicle safety system according to claim 1, wherein:

said rudimentary ranging information allows a determination of a desired separation distance between a side of said first vehicle and a side of said second vehicle.

7. The vehicle safety system according to claim 1, wherein:

a cruise control system is controlled in a variable fashion using said rudimentary ranging information.

8. A method of maintaining safety between vehicles, comprising:

transmitting a piconet signal to a second vehicle;

measuring at least one of a round-trip delay time of said piconet signal between said first vehicle and said second vehicle, and a received signal strength indicator (RSSI) from said second vehicle; and

determining rudimentary ranging information from at least one of said round-trip delay time and said RSSI.

9. The method of maintaining safety between vehicles according to claim 8, wherein:

at least one of a braking system, an accelerator control, and a steering control are at least one of enabled, disabled, and variably controlled based on said rudimentary ranging information.

10. The method of maintaining safety between vehicles according to claim 8, wherein:

a current speed of said first vehicle is adjusted based on said rudimentary ranging information.

11. The method of maintaining safety between vehicles according to claim 8, wherein:

said rudimentary ranging information allows a determination of a current direction of said second vehicle.

12. The method of maintaining safety between vehicles according to claim 8, wherein:

said rudimentary ranging information allows a determination of a desired fore and aft separation distance between said first vehicle and said second vehicle.

13. The method of maintaining safety between vehicles according to claim 8, wherein:

said rudimentary ranging information allows a determination of a desired separation distance between a side of said first vehicle and a side of said second vehicle.

14. The method of maintaining safety between vehicles according to claim 8, wherein:

a cruise control system is controlled in a variable fashion using said rudimentary ranging information.

15. Apparatus for maintaining safety between vehicles, comprising:

means for transmitting a piconet signal to a second vehicle;

means for measuring at least one of a round-trip delay time of said piconet signal between said first vehicle and said second vehicle, and a received signal strength indicator (RSSI) from said second vehicle; and

means for determining rudimentary ranging information from at least one of said round-trip delay time and said RSSI.

16. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

at least one of a braking system, an accelerator control, and a steering control are at least one of enabled, disabled, and variably controlled based on said rudimentary ranging information.

17. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

a current speed of said first vehicle is adjusted based on said rudimentary ranging information.

18. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

said rudimentary ranging information allows a determination of a current direction of said second vehicle.

19. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

said rudimentary ranging information allows a determination of a desired fore and aft separation distance between said first vehicle and said second vehicle.

20. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

said rudimentary ranging information allows a determination of a desired separation distance between a side of said first vehicle and a side of said second vehicle.

21. Apparatus for maintaining safety between vehicles according to claim 15, wherein:

a cruise control system is controlled in a variable fashion using said rudimentary ranging information.