A WIRELESS SURVEILLANCE SYSTEM FOR PRACTICALAPPLICATION IN CONDITION BASED MAINTENANCE

摘要

Advances in wireless technology, battery chemistry, and miniaturization havernmade large-scale wireless CBM data gathering systems practical. Wireless sensing nornlonger needs to be relegated to locations where access is difficult or cabling is notrnpractical. Wireless CBM data gathering can be cost effectively implemented in extensivernapplications that were historically handled by route running.rnTo receive the full benefit of an industrial condition based maintenance program,rnit is necessary to have up-to-date equipment condition. When compared with routernrunning, return on investment can be significantly higher for data gathering systems thatrnprovide machine condition four or more times a day. Most modern manufacturingrnfacilities are not able to fully implement surveillance systems due to the high capitalrncosts, installation difficulties, and the overall complexity of the system. Monthly orrnweekly route running remains the most common implementation of condit ion basedrnmaintenance (CBM).rnThe condition based maintenance practice of surveillance monitoring wouldrnbenefit significantly from intelligent, inexpensive, wireless sensors. The result would berna lower cost surveillance program, easier sensor node placeme nt, simpler data gathering,rnincreased safety, and seamless reconfiguration or expansion of sensor nodes. In short,rnsurveillance programs would be easier to apply to a wider variety of applications.rnThis publication will detail the major issues surrounding the development of arnwireless surveillance system for practical application in the factory environment. Arnwireless surveillance system must address the reliability of the wireless communicationrnnetwork, cost, battery life, ease of configuration, miniatur ization and intelligence, allrnwhile retaining the accuracy and bandwidth of traditional sensors. A careful balance isrnnecessary.