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提出了一种结构简单、工作可靠、测量精度较高的控制棒棒位探测器———数字模拟棒位探测器。该探测器由两个反饶串接的长电感线圈、两个短电感编码线圈与一根编码芯棒组成。其中，编码芯棒由一段导磁衔铁与一段非导磁材料组成。当编码芯棒在线圈中央轴向运行时，初级线圈上输入的交变励磁信号必在次级线圈上产生交变的感应信号，通过接收这些线圈的输出信号并进行处理从而判断控制棒在堆内的运行位置。实验结果表明：本数字模拟棒位探测器性能较好，完全可用于供热堆棒位测量
Proposed a simple structure, reliable, high precision measurement of the control rod rod detector --- digital simulation rod detector. The detector consists of two long anti-raccoon inductance coil, two short-inductance coding coil and a coding mandrel. Among them, the code mandrel by a section of magnetically conductive armature and a section of non-magnetic material. When the coding mandrel is operated in the axial direction of the coil, the alternating excitation signals input on the primary coil will produce alternating induction signals on the secondary coils. By receiving the output signals of these coils and processing them, it is judged that the control rods are on the pile Within the operating position. Experimental results show that: The digital simulation rod detector performance is better, can be used for heating reactor rod position measurement