Development of input output simulator for core protection calculator system

The protection systems should be tested periodically to verify that its functions are performed against pre-defined conditions. The Core Protection Calculator System(CPCS) performs the Departure from Nucleate Boiling Ratio(DNBR) and Local Power Density(LPD) trip functions. The CPCS is tested periodically with simulated inputs to verify that the system will function as intended. The input/output simulator has been developed for CPCS testing. The input/output simulator provides analog signals, pulse signals, digital signals, and receives contact signals, digital signals. The generation of analog signals should consider required rate of change, accuracy, etc. for the signal. The pulse signals and digital signals should meet the simulated signal characteristics and timing requirements of the target system. The input/output simulator for the real time system should be designed to meet timing requirements of the target system and simulated signal characteristics with through understanding of the target system