Patent ID: 11885699
Assignee: HUMANETICS INNOVATIVE SOLUTIONS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A system for detecting forces during a collision test where the system undergoes a sudden impact causing deformation in a short time span, said system comprising:
a plurality of body parts forming an anthropomorphic test device and simulating at least a part of a human body;
at least one first optical fiber supported by at least one of said body parts, said first optical fiber extending between a first end and a second end along a fiber axis, said first optical fiber comprising a plurality of cores extending between said first and said second ends, 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;
a plurality of components forming a part of at least one of a vehicle and/or a testing stand; at least one second optical fiber supported by at least one of said components, said second optical fiber extending between a first end and a second end along a fiber axis, said second optical fiber comprising a plurality of cores extending 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;
an emitter in communication with said first and said second optical fibers for emitting a light having a predetermined band of wavelengths through said plurality of cores of said first and second optical fibers that is reflected by said sensors; and
an interrogator in communication with said first and said second optical fibers for detecting said reflected light from said plurality of grating sensors such that changes to the reflected light indicate a strain on said optical fibers;
wherein said plurality of cores of at least one of said first and said second optical fibers are further defined as having at least one location along said respective length where said plurality of cores are helically wound about each other along said fiber axis; and
wherein deformation of either of said body part and said component causes strain on said first or said second optical fiber that stretches and compresses said grating sensors thereby changing the reflection of the light from each of said plurality of cores that is used to measure torsion thereof.