DUAL CONTROL APPARATUS BASED ON FIELD PROGRAMMABLE GATE ARRAY AND DUAL CHANGE METHOD

摘要

Disclosed are a dual control apparatus applied to an instrumentation and control system of a nuclear power plant based on a field programmable gate array (FPGA); and a dual switching method. According to embodiments of the present invention, even though a failure occurs in one FPGA board among the duplicated FPGA control apparatuses, a normal operation can be maintained under another FPGA board by performing dual switching by determining failure according to whether a beat signal is received or not. Further, when applied to the instrumentation and control system of the nuclear power plant, the dual control apparatus can perform a main arithmetic function by substituting analog and digital signal processor (DSP) boards. Utilization of the control apparatus is further improved by using the duplicated FPGA. [Reference numerals] (AA,JJ) Memory; (BB) First calculation FPGA; (CC,GG,LL,PP) Signal input/output unit; (DD,MM,RR) Beat signal; (EE,NN) Forced stop; (FF) First monitoring FPGA; (HH,QQ) Redundant switching signal processor; (II) First FPGA board; (KK) Second calculation FPGA; (OO) Second monitoring FPGA; (SS) Second FPGA board