国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Aiming at the real-time monitoring of water qualities, an wireless water quality monitoring and early warning terminal is designed, it can monitor water temperature, dissolved oxygen, pH, and other parameters, and has local storage, display, remote transmission and Warning alarm function. It use ATmega128A microcontroller as the core controller, and use electrochemical sensors as the sampling module, and remote communication by GPRS network. Dormancy and some power outages were used to saving energy. A linear regression model were used to design early warning mechanism, the deviation between estimate value and real value is less than 1 unit. Experimental results show that the monitoring accuracy in less than 3% of full scale.