Patent ID: 9046342
Filing Date: 2015-06-02
Classification: G01B,G01L,Y10T

Abstract:
1. A coaxial cable Bragg grating sensing device configured for use in a frequency domain transmission or frequency domain reflection to detect and measure at least one of strain, temperature, pressure, corrosion, and environmental parameters applied thereto comprising: an inner conductor extending a length of the coaxial cable sensing device; an outer conductor extending the length of the coaxial cable sensing device; and an insulating material disposed between the inner conductor and the outer conductor, said insulating material electrically insulating the outer conductor from the inner conductor; wherein at least one of the inner conductor and the insulating material includes three or more impedance discontinuities along its respective length; wherein the distance between two successive impedance discontinuities is equal to a predefined periodic distance within an acceptable tolerance; wherein the two successive impedance discontinuities are configured to generate resonant peaks and valleys in the frequency domain; and wherein the spectral positions of the peaks and valleys are indicative of specific functions of the cable characteristics and of the period of the discontinuities.