A Bio-network Based Fault-Tolerant Architecture for Supervisory System

Supervisory systems show increasing importance in many plants to ensure the secure and stable production. And the fault tolerance ability is a key problem. Concerned with the problem of low automation level and high operation cost, a layered Bio-Network is studied inspired by biology system, and Bio-Entity as its functional unit is analyzed. In the bottom layer, the communication infrastructure is built on Web Service to hide the difference among underlying heterogeneous systems. In the Bio-System layer, each Bio-Entity is delegated by an agent to gain the functions. Then, in the application layer, various services are encapsulated upon Bio-Entity. The application interface makes the integration with other systems more convenient. Based on Bio-Network, a novel framework of supervisory system for typical waterworks is proposed. The fault tolerant functions are analyzed in the context of Bio-Network. The practical application proves that Bio-Network based system configuration is improved and the cost is reduced.