Patent ID: 9638652
Date: 2017-05-02
CPC Classifications: G01L,G01N,G01R

Claim:
1. A method comprising; providing an electrical measurement system for measuring an electrical characteristic of a concrete structure; generating with the electrical measurement system an electrical pulse which is applied with a first probe to a first part of the concrete structure; measuring with the electrical measurement system an output electrical signal with a second probe applied to a second part of the concrete structure, the output electrical signal being the result of application of the electrical pulse to the first part of the concrete structure; applying a predetermined signal processing algorithm to the output electrical signal to generate a low frequency electrical characteristic of the concrete structure; providing at least one beacon of a plurality of beacons, each beacon including a predetermined portion of a transceiver providing pulses of a predetermined format; providing a global positioning system to provide a global position; determining at least a relative location of a plurality of relative locations, each relative location being that of the electrical measurement system relative to a predetermined subset of the plurality of beacons; and storing at least one of the output electrical signal and the low frequency electrical characteristic together with the plurality of relative locations and the global position.