The flow control system for bathroom based on embedded system

China is a country lack of water resources and the phenomenon of wasting water is very serious. Especially, the irrationality of the bathrooms' management has caused the heavy waste of water. To improve the present situation, a flow control system for bathroom based on embedded was designed in this paper. Using scientific billing methods according to flow and humanized control management, this system can achieve the goal of water-using rationalization and the high efficiency of management in bathroom. Experimental use proved that the system is reliable, economical and practical, which can be put into use.