Position and orientation determination system and method

• US 9,678,219 B2
• Filed: 08/11/2015
• Issued: 06/13/2017
• Est. Priority Date: 08/18/2010
• Status: Active Grant

• Current Assignee: Battelle Savannah River Alliance LLC
• Original Assignee: Savannah River Nuclear Solutions LLS
• Inventors: Foley, Trevor Q., Farfan, Eduardo B., Harpring, Lawrence J., Gordon, John R., Jannik, Gerald T.
• Primary Examiner(s): Makiya, David J
• Assistant Examiner(s): Jo, Taeho
• Application Number:
  US14/823,196
• Publication Number:
  US 20150346355A1
• Time in Patent Office: 672 Days
• Field of Search: 250394
• CPC Class Codes: G01T 1/167 Measuring radioactive content of objects, e.g. contamination whole body counters G01T1/163
• CPC Class Codes: G01T 1/169 Exploration, location of contaminated surface areas
• CPC Class Codes: G01T 7/00 Details of radiation-measuring instruments
• CPC Class Codes: G21K 1/025 using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation

Abstract

A position determination system and method is provided that may be used for obtaining position and orientation information of a detector in a contaminated room. The system includes a detector, a sensor operably coupled to the detector, and a motor coupled to the sensor to move the sensor around the detector. A CPU controls the operation of the motor to move the sensor around the detector and determines distance and angle data from the sensor to an object. The method includes moving a sensor around the detector and measuring distance and angle data from the sensor to an object at incremental positions around the detector.

Claims

1. A position determination system, comprising:

a base;

a radiosensitive detector carried by the base;

a distance sensor carried by the base and capable of sensing a distance to an object, wherein the distance sensor is capable of being rotated 360°

with respect to the base and the radiosensitive detector; and

a CPU that receives information from the distance sensor to determine a distance to the object.

2. The position determination system as set forth in claim 1, wherein the object is a wall of a room, and wherein the radiosensitive detector does not rotate with respect to

the base, and wherein the CPU is carried by the base.

3. The position determination system as set forth in claim 1, wherein the CPU determines a perpendicular distance to the object and determines an angular position of the object.

4. The position determination system as set forth in claim 1, wherein the distance to the object is determined from an origin that is selected from the group consisting of a center of the radiosensitive detector, a face of the distance sensor, a center of the base, or a center of a rotational axis of the distance sensor.

5. A position determination system, comprising:

a radiosensitive detector;

a distance sensor operably coupled to the radiosensitive detector;

a motor coupled to the distance sensor to rotate the distance sensor to 360°

around the radiosensitive detector; and

a CPU that controls the operation of the motor to move the distance sensor around the radiosensitive detector and determines distance and angle data from the distance sensor to an object.

6. The position determination system as in claim 5, wherein the CPU determines an orientation of the radiosensitive detector.

7. The position determination system as in claim 5, wherein the CPU determines a perpendicular distance from the radiosensitive detector to the object.

8. The position determination system as in claim 5, further comprising a rotatable connection between the radiosensitive detector and the distance sensor.

9. A method for determining a position of a radiosensitive detector, comprising:

rotating a distance sensor to 360°

around the radiosensitive detector; and

measuring distance and angle data from the distance sensor to an object at incremental positions around the radiosensitive detector.

10. The method as in claim 9, further comprising determining an Orientation of the radiosensitive detector.

11. The method as in claim 9, further comprising determining a perpendicular distance from the radiosensitive detector to the object.

12. The method as in claim 9, further comprising determining if the object is on a wall segment.

13. The method as in claim 12, further comprising determining a perpendicular distance to the wall segment.