Design and Implementation of Fault Tolerant Soft Processors Inspired By Endocrine Cellular Communication

In self repairing digital system, fault tolerance is a crucial operational aspect. Rerouting process followed by cell replacement is impractical. Moreover, efficiency cannot be achieved due to the addition of extra functional circuits. Endocrine cellular communication, a collection of cells and tissues of organisms that secrets hormone when an endocrine cell dies in a specific process.Its connections are maintained through blood vessels. Inspired by this communication system a system is proposed which reduces hardware overhead and minimizes unutilized hardware to maintain good fault coverage. In this paper, a fault unit recovering system was proposed by the use of genetic algorithm to increase the lifetime of circuits. Spare cells are used as a replacement in case failure occurs in working cells. Comparing with existing methods, the mechanism proposed is efficient for the real fault tolerant systems.