Shipboard wireless sensor networks utilizing Zigbee technology

Abstract

This thesis studies the feasibility of utilizing Zigbee standard devices to create a shipboard wireless sensor network. Two primary methods were used to demonstrate feasibility. The first method demonstrated initial feasibility with a series of laboratory tests. The tests included range, reliability, and battery life tests. In the second portion, a prototype pressure sensor was created by matching a low power pressure transducer to a Zigbee modem via an integrated DAQ unit. Supporting software was generated using LabVIEW 6.0 to act as a server program and allow a remote Integrated Condition Assessment System (ICAS) workstation to log in via a TCP/IP connection and monitor sensor data. The expected contribution from the research effort would a completely wireless sensor network which would result in a net savings in man hours required to maintain and monitor. The sensor network would be reliable, relatively inexpensive, and entirely COTS available. With an extended battery life of 18 to 24 months, even the battery replacement could be fit into a standard annual or bi-annual PMS cycle, minimizing the workload to maintain. Initial feasibility testing was completed satisfactorily and the prototype sensor was successfully created and integrated to interface with the existing sensor infrastructure.