Remote vibration sensing through opaque media using permanent magnets

DWPI Title: Method for sensing vibrations or displacements remotely, invlves detecting damage or degradation to object in number of vibrating objects by detecting shifts in natural frequency
Abstract: A method of sensing vibrations or displacements remotely is provided. Magnets are attached to vibrating objects or the vibrating objects themselves are magnetic. A number of magnetic sensors are placed a specified distance from the magnets. Vibrational displacement of the vibrating objects is determined according to a model that maps changes in magnetic field to vibrations or spatial displacements.
Use: Method for sensing vibrations or displacements remotely.
Advantage: The optimal configuration of magnets or sensors minimizes inversion noise. The magnetic tracking system is able to measure the motion of the beam accurately when compared with video taken from a separate test with the aluminum box removed.
Novelty: The method involves attaching a number of magnets to a number of vibrating objects. The number of magnetic field sensors a specified distance is placed from the number of magnets. The changes are detected in magnetic field by the number of magnetic field sensors. The vibrational displacement of the number of vibrating objects is determined according to a model that maps changes in the magnetic field to vibrations or spatial displacement. The damage or degradation is determined to an object in number of vibrating objects by detecting shifts in natural frequency and changes in mode shapes of the number of vibrating objects.
Filed: 10/24/2018
Application Number: US16169168A
Tech ID: SD 14830.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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