The big advantage of this technology is that users do not need a separate safety controller and cabling.

此技术最大的优势是用户不需要单独的安全控制器和另外布线。

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The purpose is to design an automatic adjusted, and power output safety controller. An incident current control method is used by the utility model.

目的就是要设计一种能自动调节，而且能量输出安全的控制装置。

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But the overall air system's safety is built on redundancy, and taking away the controller's extra set of eyes is like removing stop signs or traffic lights from city intersections and forcing drivers to be more vigilant and cautious, says Paul Rinaldi, president of the National Air Traffic Controllers Association.

NPR: FAA To Close 149 Air Traffic Towers Under Cuts