Skip to Content
Find More Like This
Return to Search

Pressure sensor

United States Patent

9,146,168
September 29, 2015
View the Complete Patent at the US Patent & Trademark Office
Y-12 National Security Complex - Visit the Technology Transfer Website
Disclosed is a passive, in-situ pressure sensor. The sensor includes a sensing element having a ferromagnetic metal and a tension inducing mechanism coupled to the ferromagnetic metal. The tension inducing mechanism is operable to change a tensile stress upon the ferromagnetic metal based on a change in pressure in the sensing element. Changes in pressure are detected based on changes in the magnetic switching characteristics of the ferromagnetic metal when subjected to an alternating magnetic field caused by the change in the tensile stress. The sensing element is embeddable in a closed system for detecting pressure changes without the need for any penetrations of the system for power or data acquisition by detecting changes in the magnetic switching characteristics of the ferromagnetic metal caused by the tensile stress.
Mee; David K. (Knoxville, TN), Ripley; Edward B. (Knoxville, TN), Nienstedt; Zachary C. (Oak Ridge, TN), Nienstedt; Alex W. (Oak Ridge, TN), Howell, Jr.; Layton N. (Knoxville, TN)
Consolidated Nuclear Security, LLC (Reston, VA)
13/ 835,700
March 15, 2013
GOVERNMENT RIGHTS The U.S. Government has rights to this invention pursuant to contract number DE-ACO5-000R22800 between the U.S. Department of Energy and Babcock & Wilcox Technical Services Y-12, LLC.