We have proposed a magnetic motion capture system using an LC resonant magnetic marker. The proposed system is composed of an exciting coil, an LC marker, and a 5 X 5-matrix search coil array (25 search coils). The LC marker is small and has a minimal circuit with no battery and can be driven wirelessly by the action of electromagnetic induction. It consists of a Ni-Zn ferrite core (3 mm phi X 10 mm) with a wound coil and a chip capacitor, forming an LC series circuit with a resonant frequency of 186 kHz. The relative position accuracy of the system is less than 1 mm within the area of 100 mm~3 up to 150 mm from the search coil array. Compared with dc magnetic systems, the proposed system is applicable for precision motion capture in optically isolated spaces without magnetic shielding because the system is not greatly influenced by earth field noise.
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机译：我们提出了一种使用LC谐振磁性标记的磁运动捕获系统。所提出的系统由令人兴奋的线圈，LC标记和5×5矩阵搜索线圈阵列（25个搜索线圈）组成。 LC标记小，并且具有最小电路，没有电池，可以通过电磁感应的动作无线地驱动。它由Ni-Zn铁氧体磁芯（3mm Phi x 10 mm）组成，带有卷绕线圈和芯片电容器，形成LC系列电路，具有186 kHz的谐振频率。系统的相对位置精度在100mm〜3的面积内小于1mm，距离搜索线圈阵列高达150 mm。与直流磁性系统相比，所提出的系统适用于光学隔离的空间中的精确运动捕获，而没有磁屏蔽，因为该系统不会受到地球场噪声的大大影响。
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