Abstract
Power monitoring system is one of the most important parts of nuclear planet. Due to the fact that the neutron flux in the reactor core is proportional to the reactor power, the wide range neutronmonitor system (WRNM) plays an important role in controlling and monitoring the situation of the reactor core. It can provide two main functions. First, it offers the information about the power variation; second, it provides the trip signals for the reactor protecting system in order to adjust the control rod. The classic WRNM systems were built by analog circuit system for the most parts. It is difficult to tune the parameters among different reactor system. Comparing to the analog cir-cuit system, the digital circuit system is flexible to redesign the parameters, providing a wide adaptability to different reactor systems; Moreover, analog circuit system is sensitive to the noise more than digital circuit system does, hence the readout could have errors for analog circuit system. Thanks to the rapid growing of IC technology, the efficiency of ADCs, the memory spaces of system, and the capability of realizing DSP algorithms becomes better and better these years. Using digital system to achieve the real-time processing as what can be done by classic analog system is possible for today’s WRNM. Therefore, the goal of our research is to evaluate the feasibility of digitizing the classic WRNM system, especially for the Campbell technique realization.