SEGA: Secured Edge Gateway Microservices Architecture for IIoT-Based Machine Monitoring

In this article, we propose SEGA, a secured edge gateway microservices architecture for industrial Internet of things-based monitoring of machines in industries. SEGA allows the secured collection, transmission, and temporary storage of data within the edge network. A k-nearest neighbors-based analytics module hosted on the edge gateway processes time-sensitive machine monitoring data on the gateway itself and identifies machines’ operational status. The system predicts the machine state and displays the monitored parameters such as current consumed, power factor, power consumption, and vibrational state of machinery. SEGA also enables secured offloading of data and advanced analytical functions from the edge gateway to the cloud. SEGA's deployment results show negligible changes in the edge gateway's performance due to the inclusion of various security and encryption mechanisms. However, the resource-constrained edge sensor nodes show an increase in wireless packet transmission latencies between them and the gateway by approximately 84.12 ms.