Electron Tube performance monitoring via remote means

Murray, Adam (2018) Electron Tube performance monitoring via remote means. [USQ Project]


While the use of Electron Tubes has greatly decreased over the years, there are specialised applications where these devices remain in use. The final output stage on high power RF transmitters is one such application, where they continue to be used due to their ability to handle high amounts of power. One example where these Electron Tubes are used is in the final output stage of high powered transmitters (5-20kW) used for FM radio transmission deployed in various locations across the country. As these devices have a finite life their performance decreases over time and they require replacement to ensure transmission equipment is achieving the desired level of performance. Currently the common approach is to replace these units on a time in-service basis ensuring they are replaced before there is a noticeable decrease in performance. As these devices and the labour associated with their replacement is a considerable cost, better performance monitoring will allow for considerable cost savings through a more informed replacement approach. In addition to this, improved real-time monitoring will allow for improved failure prediction and will ensure an increase in system reliability. The first objective of this project was to determine the typical changes to an Electron Tube in service. An understanding of these changes will help to determine how best to measure the performance of an Electron Tube in service. After analysis of the failure mechanisms a system was developed to measure the performance of an Electron Tube in real-time. With this system in place its performance was evaluated to determine its effectiveness in measuring and recording in-service performance measurement data. Over time as more performance data is gathered a prediction model can be developed to predict the remaining lifespan of Electron Tubes deployed in the field. This improved insight into the remaining lifespan of the Electron Tubes can be used for more informed replacement planning and fault prediction.

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Item Type: USQ Project
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors: Maxwell, Andrew
Qualification: Bachelor of Engineering (Honours) (Electrical and Electronic)
Date Deposited: 08 Sep 2021 04:50
Last Modified: 29 Jun 2023 02:03
URI: https://sear.unisq.edu.au/id/eprint/40631

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