The detection circuit uses alternating current capacitance bridge method and the principle is based on the correlated demodulation.
检测电路为基于相关检测原理的交流电容电桥的方法。
Mutual capacitance: A layer of driving lines carries current.
互电容 ：一层含有电流的驱动线路。
The method obviously improves the precision of capacitance current calculation and will be further used in practice.
该方法显著提高了电容电流的计算精度，并将进一步在实践中应用。
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