The steady counting rates of neutron in reactor are measured by a conventional instrument(the start-up devices)to calibrate reactivity worth of a control rod.
利用常规仪器（堆控制室中的启动装置）测得反应堆中稳定的中子计数率来刻度控制棒的反应性当量。
2
In order to solve the problem about the reactor period calibrating instrument, a new software signal source based on numerical calculation is presented.
为了解决反应堆周期校验仪存在的问题，提出一种基于数值计算的软件信号源。
3
The results indicate that not only the disadvantage of uncertainty in measurement instrument is overcome, but also the reactor power can be properly predicted in some cases of partial data lack.