Mulitimeter is used widely. But in the case of error operation, especially when using electricity to measure voltage , it is damaged easyly.

万用表是一种常用的测量仪表，但使用不当，特别是误用电流档去测量电压时很容易烧毁保险甚至损坏万用表。

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Practice has proved that the system has good real-time and reliability. Meanwhile, the system has realized the remote control of spot anti-error operation.

实践证明该系统具有较好的实时性和可靠性，同时，实现了对现场防误操作的远程控制。

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This dissertation puts forward a way on judging an image whether in focus by a single frame, and avoiding an error operation when the image in focus to spring focus.

提出了一种可单帧判断图像是否清晰的方法，消除了图像在清晰情况下却触发调焦的误操作，从而提高了跟踪的可靠性和精度。

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All that is very tempting: unfortunately, as they become embedded in an operation, they increase the risk of data corruption or human error.

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