Patent ID: 9556727
Date: 2017-01-31
CPC Classifications: E21B,H04B,H04L

Claim:
1. A method of transmitting binary data axially along a length of metal pipe, the method comprising: providing an acoustic-electric channel, the acoustic-electric channel comprising: the method further comprising: the first transducer generating wideband shear-horizontal waves, the shear-horizontal waves being modulated to form a series of Chirp signals comprising binary data, wherein each Chirp signal has a varied frequency over the course of the Chirp signal, each Chirp signal has an initial frequency f wherein f said shear horizontal waves generated by the first transducer propagating through the first transition piece, into the pipe, thence into the second transition piece and the second transducer; the second transducer turning received shear horizontal wave energy into received electrical energy; and demodulating the received electrical energy as binary data, wherein the presence and absence of Chirp signals over time are interpreted as binary data by the second electronics.