Digital instrumentation and control system of the data polling methods and nuclear power plant using the method

摘要

PROBLEM TO BE SOLVED: To provide a data polling method and a digital instrumentation control system for nuclear power plant using that method.;SOLUTION: A CPU 10 includes a data transmission instruction output processing section 11, an input means failure detection signal input processing section 13 for receiving a failure detection signal of an input means failure detection processing section 22 for detecting failure of input means 20, an input data storage memory 12 for storing the update data every time when the data is updated by the input data update processing section 21 of the input means 20, and a CPU arithmetic processing section 14 for acquiring the input data of the input data storage memory 12, and executing arithmetic processing by acquiring a detection signal of the input means failure detection signal input processing section 13. When the failure detection processing time of the input means failure detection processing section 22 is T22, and the data transmission instruction output period of the data transmission instruction output processing section 11 is T1, the CPU arithmetic processing section 14 acquires periodic data before a time indicated by {integer round-up of(T22÷T1)}×T1.;COPYRIGHT: (C)2014,JPO&INPIT