FPGA BASED RELIABILITY SYSTEM USING MODULAR REDUNDANCY TECHNIQUE

This article validates the reduction in hardware utilization to establish a reliable system at the cost of time. Redundancy is a technique to improve reliability and availability of a system. Triple modular redundancy uses three functionally equivalent units to provide a redundant backup and it has a majority voter circuit which produces a single output. An alternative way to have a fault less system and the idea of boosting the dependency of a system is fault tolerant system. The most fundamental method used for the fault tolerant system is triple modular redundancy in which the majority voter circuit obtains fault free response. Traditionally, for building a fifth modular redundant system, five different modules are required which increases the hardware substantially. Hence, to reduce the hardware, we have established a fifth modular redundant system using a combination of triple modular redundancy and time redundancy. In this study, we have used 2bit multiplier using different modular redundancy modules to verify our purpose.