Augmented reality maintenance system for multiple rovs

• US 5,706,195 A
• Filed: 09/05/1995
• Issued: 01/06/1998
• Est. Priority Date: 09/05/1995
• Status: Expired due to Fees

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Nafis, Christopher Allen, Solanas, Claude Homer III, Meenan, Peter Michael, Vickerman, David Clark, Corby, Nelson Raymond Jr.
• Primary Examiner(s): Chin, Gary
• Application Number:
  US08/523,420
• Time in Patent Office: 854 Days
• Field of Search: 364/423.098, 364/423.099, 364/424.034, 364/551.01, 364/506, 364/507, 364/508, 364/432, 364/424.027, 364/424.028, 364/424.029, 348/113, 348/114, 348/130, 250/336.1, 367/6
• US Class Current: 701/2
• CPC Class Codes: G05D 1/0027 involving a plurality of vehicles, e.g. fleet or convoy travelling fleet control of land vehicles from a control room G05D1/0297; traffic control systems for road vehicles G08G1/00; for marine craft G08G3/00; for aircraft G08G5/00
• CPC Class Codes: G05D 1/0044 by providing the operator with a computer generated representation of the environment of the vehicle, e.g. virtual reality, maps maps used for automatic navigation G05D1/0274; flight directors G01C23/005

Abstract

An enhanced reality maintenance system operates one or more remotely operated vehicles (ROVs) in a hazardous or inaccessible environment. A computer model of the environment is created from spatial parameters provided to the system. Positions and orientations of moving objects are monitored. The projected course of the moving objects is extrapolated and constantly updated. An automated flight planner, receives desired destinations from an operator, analyzes the environment, the projected courses of moving objects and planned trajectories of other ROVs, and selects a planned trajectory of a selected ROV through the environment without collision.

Claims

1. A remote maintenance system for inspection and repair of structures in an environment comprising:

a) a plurality of remotely operated vehicles (ROVs) each having

1. a sensor package, for inspecting physical characteristics of said structures in the environment, and

2. actuators for maneuvering the ROV;

b) a position and orientation sensing (P&

O) unit for providing a position and orientation, of any-moving objects and each of the ROVs;

c) an environment model storage device for retaining computer graphic information regarding the environment of the ROV;

d) an environment modeler for receiving parameters defining objects in the environment of the ROV and producing a computer generated model of the environment and storing the model in the environment model storage device;

e) an ROV model storage device for retaining computer graphic information regarding the ROV size and shape parameters;

f) an ROV modeler for receiving parameters defining the ROV and producing a computer generated model of the ROV for storing in the ROV model storage device;

g) an automated flight planner comprised of;

i. a pointing device allowing the operator to select an ROV and points on a path which the operator desires the selected ROV to follow,

ii. a time/space storage coupled to the environment model storage device unit for storing information defining locations in space occupied at different times,

iii. a course projector coupled to the P&

O unit and the ROV model storage device for planning a trajectory for each of the moving objects monitored by the P&

O unit, and indicating locations in space which are occupied by the moving objects at different times stored in the time/space storage device, and

iv. a control unit for receiving the shape of each ROV from the ROV model storage device, and sweeping the received shape of each ROV through the associated planned trajectory which indicates the occupied locations at different times stored in the time/space storage device for all planned trajectories, for planning a path based on the operator selected points which will not intersect any occupied locations.

2. The remote maintenance system of claim 1 further comprising a path execution unit coupled to the control unit and actuators, for receiving a selected trajectory from the control unit and causing the actuators to move the ROV along said selected trajectory.

3. The remote maintenance system of claim 1 further comprising a flight path monitoring unit coupled to the P&

O unit and the time/space storage unit, for reading a selected trajectory from the time/space storage unit, monitoring the actual location and position of a selected ROV over time, indicating the selected ROV'"'"'s actual path and displaying the selected trajectory and the actual path of the selected ROV.