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发明公开
CN104101292A 非接触式位置传感器，和非接触式位置传感器系统 无效 - 撤回

非接触式位置传感器，和非接触式位置传感器系统
摘要：
本发明涉及改进的非接触式位置传感器和结合该非接触式位置传感器的系统。这样的非接触式位置传感器包括至少两个传感器线圈，每个传感器线圈包括限定线圈轴线的导磁芯和绕组。至少两个传感器线圈被布置成使线圈轴线基本上彼此并联。传感器的电路激励至少两个传感器线圈的每个内的预定交流电流并确定至少两个传感器线圈的每个两端的电压的高频电压分量。预定交流电流包括低频电流分量，和高频电流分量。电路通过将两个确定的电压的高频电压分量的振幅水平彼此相减以及通过比较相减结果与预定的参考图案来检测铁磁目标的位置。
摘要（英）：

The invention relates to an improved contactless position sensor and a system incorporating same. Such a contactless position sensor comprises at least two sensor coils each comprising a magnetic permeable core and windings defining a coil axis. The at least two sensor coils are arranged with the coil axes essentially in parallel to each other. An electrical circuit of the sensor drives a predetermined alternating current within each of the at least two sensor coils and determines a high frequency voltage component of a voltage across each of the at least two sensor coils. The predetermined alternating current includes a low frequency current component, and a high frequency current component. The electrical circuit detects the position of a ferromagnetic target by subtracting from each other amplitude levels of the high frequency voltage components of two of the determined voltages and by comparing the subtraction result to a pre-determined reference pattern.

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