Inertial navigational guidance system for a driverless vehicle utilizing laser obstacle sensors

• US 20060276958A1
• Filed: 06/02/2005
• Published: 12/07/2006
• Est. Priority Date: 06/02/2005
• Status: Abandoned Application

• Current Assignee: Jervis B Webb Company (Daifuku Company Limited)
• Original Assignee: Jervis B Webb Company (Daifuku Company Limited)
• Inventors: Crumbaugh, Timothy Ross
• Application Number:
  US11/142,934
• Publication Number:
  US 20060276958A1
• Time in Patent Office: Days
• US Class Current: 701/200
• CPC Class Codes: G05D 1/024 in combination with a laser lasers per se H01S
• CPC Class Codes: G05D 1/027 comprising intertial navigation means, e.g. azimuth detector inertial navigation G01C21/16; inertial navigation combined with non-inertial navigation instruments G01C21/165

Abstract

A navigational control system for, and method of controlling the operation of, a driverless vehicle. The system includes a vehicle travel path and a visual object detection system for generating data relating to the position of the vehicle relative to objects in readable proximity to the travel path. The system includes an inertial guidance system for controlling operation of steering and drive mechanisms to direct the vehicle substantially along the travel path, and for correcting deviation from said travel path based upon data generated by said visual object detection systems, and for detecting impending obstacle contact.

Claims

1. A navigational control system comprising:

a vehicle travel path;

at least one object in readable proximity to the travel path; and

a vehicle having a steering mechanism and a drive mechanism, said vehicle movable along said travel path, said vehicle further having a visual object detection system for generating data relating to the position of said vehicle relative to said at least one object, said vehicle further having an inertial guidance system for controlling operation of said steering and drive mechanisms to direct said vehicle substantially along said travel path, said inertial guidance system further having means for correcting deviation from said travel path based upon data generated by said visual object detection system.

2. The system of claim 1 comprising a plurality of visual object detection systems.

3. The system of claim 2 wherein at least two of said visual object detection systems are located toward opposing sides of said vehicle from each other.

4. The system of claim 2 wherein at least two of said visual object detection systems are located toward opposing ends of said vehicle from each other.

5. The system of claim 1 wherein said visual object detection system measures the distance of said vehicle from said object.

6. The system of claim 1, said inertial guidance system further having means for mapping objects in readable proximity to said travel path.

7. The system of claim 1 wherein said visual object detection system repeatedly generates data relating to the position of said vehicle relative to a plurality of objects.

18. The system of claim 1 wherein said visual object detection system provides emergency obstacle avoidance warning.

8. A driverless vehicle a having:

a steering mechanism and drive mechanism to move said vehicle along a travel path;

at least one visual object detection system for generating data relating to the position of said vehicle relative to at least one object near said travel path;

an inertial guidance system for controlling operation of said steering mechanism and said drive mechanism to direct said vehicle substantially along a travel path, said inertial guidance system further having means for correcting deviation from said travel path based upon data generated by said visual object detection system.

9. The vehicle of claim 8 having a plurality of visual object detection systems.

10. The vehicle of claim 9 wherein at least two of said visual object detection systems are located toward opposing sides of said vehicle from each other.

11. The vehicle of claim 9 wherein at least two of said visual object detection systems are located toward opposing ends of said vehicle from each other.

12. The vehicle of claim 8 wherein said inertial guidance system further has means for mapping objects in readable proximity to said travel path.

19. The vehicle of claim 9 wherein said visual object detection system provides indicia of impending obstacle contact.

13. A method of controlling the operation of a driverless vehicle using an inertial guidance system to control operation of the steering mechanism and the drive mechanism of said driverless vehicle to direct said vehicle substantially along a travel path, said method comprising;

repeatedly collecting data from at least one visual object detection system relating to the position of said vehicle relative to at least one object near said travel path;

correcting deviation from said travel path based upon data collected from said visual object detection system.

14. The method of claim 13 further including collecting data from a plurality of visual object detection systems.

15. The method of claim 13 further including mapping objects in readable proximity to said travel path.

16. The method of claim 13 further including repeatedly collecting data relating to the position of said vehicle relative to a plurality of objects.

17. The method of claim 16 further including triangulating the position of said vehicle relative to at least three objects.

20. The method of claim 13 further including the step of altering said operation in response to receiving indication of an impending collision from said visual object detection system.