The ability to reliably transmit data through metallic barriers without intrusive procedures like hole drilling is useful, and sometimes necessary, for the safety of personal and equipment in hazardous conditions. Examples include submarine hulls, space vehicles, and nuclear reactors. Traditional means of communication via conductive wires compromise the integrity of the metal vessels while traditional wireless communications solutions like WiFi are limited by Faraday shielding imposed by metallic barriers. Acoustic communication solutions to this problem have been explored over the past 15 years but have not been widely deployed. The goal of this work was to develop a hand-held, battery operated system that is capable of wirelessly powering and communicating with electronics through a curved metallic barrier. Three systems were implemented using Digital Signal Processors (DSPs), Microcontroller Units (MCUs),or a combination of the two. An electronic system was developed on one side of the metallic barrier to excite vibrations at 1.25 MHz in a piezoelectric transducer attached to the barrier. Data was transmitted through the wall in both directions in half-duplex mode by amplitude modulating this carrier signal with Manchester encoded data. Energy from the carrier wave was harvested on the other side of the wall to power electronic systems. Successful acoustic communication at 10 kbps between MCUs separated by a metallic barrier was achieved, where one system was powered completely by the acoustic signal applied through the barrier.
|Advisor:||Saulnier, Gary J.|
|Commitee:||Julius, Agung, Vastola, Ken|
|School:||Rensselaer Polytechnic Institute|
|School Location:||United States -- New York|
|Source:||MAI 52/03M(E), Masters Abstracts International|
|Keywords:||Acoustic, Communication, Delivery, Microcontroller, Power, Wireless|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be