基于对磁位计特点的分析，介绍了以磁位计为采样元件的交流大电流自动测量方法。

On the basis of the feature analysis made on the magnetic potentiometer, the automatic measurement of heavy A.

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通过采用比率采样技术，在保持元件性能不变的前提下，可提高测量精度。

By using the ratio sampling technology, the measurement accuracy can be improved to the extent that the performance of components is kept unchanged.

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这样，安装在红外光焦点运动轨迹上的热释电敏感元件被红外光焦点不断扫描而产生自主采样的热释电信号。

So, the pyroelectric sensor that is located on the moving track of the infrared focus is scanned by the infrared focus signal continuously and generates the autonomous sampling pyroelectric signal.

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