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System and method for operating an autonomous navigation system

  • US 5,640,323 A
  • Filed: 05/01/1995
  • Issued: 06/17/1997
  • Est. Priority Date: 02/05/1990
  • Status: Expired due to Term
First Claim
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1. A method of operating an autonomous navigation system for a vehicle comprising the steps of:

  • (1) initializing the autonomous navigation system;

    (2) waiting for messages to arrive in a message queue located in the autonomous navigation system;

    (3) upon receipt of a message, determining and setting a series of status flags in the autonomous navigation system to place the autonomous navigation system in a known state particular to said message;

    (4) carrying out an appropriate action in accordance with said message to operate the autonomous navigation system; and

    (5) returning to step (2),wherein the step of determining and setting a series of flags includes the steps of;

    (a) determining if a received message is a tele-mode message and if true, then in step (4) setting the vehicle to tele-operation mode;

    (b) determining if a received message is a manual-mode message and if true, then in step (4) setting the vehicle to manual operation mode;

    (c) determining if a received message is an auto-mode message and if true, then in step (4) setting the vehicle to autonomous operation mode; and

    (d) determining if a received message is a ready mode message and if true, then in step (4) setting the vehicle to ready operation mode.

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