DES Supervisor realization of the Safe Switching Mechanism of Soft-Sensors

A supervisory scheme is proposed, toward the Discrete Event Systems (DES) realization of the safe switching architecture for a bank of observers composing soft sensors for water distribution networks (WDNs). The bank of observers combined with the switching mechanism are used to cope with the nonlinear characteristics of the hydraulic and water quality variables’ dynamics in WDNs. The switching mechanism among the observers of the bank, as well as the proposed supervisor for safe switching are represented in DES form. This way, a hybrid soft sensor system, including a continuous time subsystem and a DES subsystem, is proposed.