Vision Monitoring of Half Journal Bearings

Abstract

This paper describes a Machine Vision system developed to continuously monitor the wear in a system made up of half journal bearings that can form part of a smart factory. The continuous monitoring facilitates the estimation of wear characteristics such as wear rate, and remaining life that is not possible in the traditional observation of Mean Time Between Failures. It was also found that the system is amenable to be part of the IoT network in a Smart Factory. A centrally loaded shaft supported by two half-journal bearings and driven at 28 rpm by an ordinary AC electric motor through a worm gear (reduction 50:1) is considered. A Logitech C920 camera was set to monitor a half-journal bearing. MATLAB Image Processing Toolbox was used to program the acquiring of images and the processing of the acquired images. Wear at specified time intervals were obtained and tabulated. The data in the Table were used to estimate and monitor wear characteristics. The system and the software developed can be used as part of a smart factory where journal bearings form part of it and the operation of the bearings can be made autonomous during their lifetime.