Shape Sensing System And Method For Anthropomorphic Test Devices
AssigneeHumanetics Innovative Solutions, Inc.
InventorsRogerio Tadeu Ramos, Christopher Emslie
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Abstract
A shape sensing system for an anthropomorphic test device is disclosed that includes a plurality of body parts and at least one optical fiber that has a plurality of cores in a spaced and parallel relationship with one another that extend between ends of the optical fiber for sensing positions of the body parts. Each of the cores have a plurality of grating sensors disposed along a length thereof capable of determining a position and orientation of the body parts.
Claims20
A system for sensing a shape of an anthropomorphic test device comprising:
- a plurality of body parts forming the anthropomorphic test device and simulating at least a part of a human body;
- at least one optical fiber supported by at least one of said body parts with said optical fiber extending between a first end and a second end;
- and
- said at least one optical fiber having a plurality of cores extending between said first and said second ends and being in a spaced and parallel relationship with one another between said first and said second ends and each of said cores having a plurality of grating sensors inscribed integrally therein with said sensors spaced along a length between said first and said second ends;
- wherein said grating sensors reflect an initial instance of light having a predetermined band of wavelengths as a first reflection, said first reflection corresponds to an initial position and orientation of said body parts prior to undergoing movement of said plurality of body parts and wherein said grating sensors reflect a second instance of light after movement from said initial position and orientation as a second reflection, said second reflection corresponds to a reposition and reorientation of said body parts to compare to said first reflection of said initial position and orientation.
A method for repeatably positioning an anthropomorphic test device within a test fixture, said method comprising the steps of:
- disposing at least one optical fiber throughout a plurality of body parts forming the anthropomorphic test device, the optical fiber having a plurality of cores extending between a first end and a second end with each of the cores being in a spaced and parallel relationship with one another between the first and the second ends and each of the cores having a plurality of grating sensors inscribed integrally therein with the sensors spaced along a length between the first and the second ends;
- positioning the anthropomorphic test device within the test fixture in an initial position and orientation of the body parts;
- emitting an initial instance of a light through the cores of the optical fibers;
- detecting an initial reflected light of the initial instance of the light from the sensors that corresponds to the initial position and orientation;
- subjecting the anthropomorphic test device to a sudden impact causing the body parts to move from the initial position and orientation;
- repositioning the anthropomorphic test device within the test fixture with the at least one optical fiber disposed thereabout;
- emitting a second instance of a light through the cores of the optical fibers;
- detecting a second reflected light of the second instance of the light from the sensors;
- continuing to reposition and reorient the anthropomorphic test device until the second reflection correlates with the initial reflection such that the position and orientation of the anthropomorphic test device corresponds to the initial position and orientation.
Dependencies are inferred from the claim text.