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介绍了１０ＭＷ高温气冷堆燃料元件装卸系统双向探测器的基本原理和实现方法。该法采用穿过式线圈和单通道双线圈电桥的电路结构形式，具有很强的抑制温漂的能力。双向探测器不仅能够对燃料元件进行计数，而且能够对燃料元件的运动方向进行判别
The basic principle and realization method of bi-directional detector of 10MW high-temperature gas-cooled reactor fuel element handling system are introduced. The method uses through-type coil and single-channel dual-coil bridge circuit structure, has a strong ability to inhibit temperature drift. The bidirectional detector not only counts the fuel element, but also determines the direction of movement of the fuel element