Research on Reactor Control Rod Position Indication Information Monitoring Technology Based on SOPC

A new monitoring technology for control rod position is developed by utilizing the FPGA（Field-Programmable Gate Array） platform and using the SOPC（System On Programmable Chip） technology.In this SOPC system,Nios II CPU,VGA（Video Graphics Array）display controller and CAN（Controller Area Network） bus controller are integrated in one FPGA chip.Thus the SOPC hardware platform with comprehensive functionality is constructed.Based on this SOPC platform,the real time data of control rod position indication system can be vividly displayed on the LCD and stored in the external nonvolatile RAM as history records.Therefore,the operator can obtain the overall operation status of control rod position indication system quickly and conveniently.The developed prototype has proved the feasibility of this technology.