The Redundant Virtual Sensors via Edge Computing

In the paper, we share our research results and experiences with the redundant virtual sensors. The main focus is paid on the creation of the model for redundant virtual sensors, applying the concept of “digital twins” that are associated with physical sensors. Virtual sensor can be implemented as a software instance in Cloud (SaS) or physical device via Edge computing. The goal is to create a common model which would enable a generic approach independently on vendors' implementation. MQTT protocol was selected as the main integration platform that is supported by various IoT devices and mainly sensors. To enable feasible implementation of a redundant sensor, Edge computing is used as a platform to host digital twins for physical devices. The redundant sensors can be applied for variety fail-safe applications, such control systems of tunnels.