Self-harvesting water energy power supply water-saving system for restroom and intelligent monitoring method thereof

The present invention discloses a self-harvesting water energy power supply water-saving system for a restroom and an intelligent monitoring method thereof. The system comprises a self-generating electric module, an electric power storage module and a control module. The self-generating electric module comprises a hydraulic generator and a voltage stabilization module; the electric power storage module comprises a lithium ion battery, a battery protection circuit and a voltage reduction module; and the control module comprises a controller, an infrared detection module and an execution module.The method comprises the steps of: 1, obtaining signals of the infrared detection module and a voltage of the lithium ion battery; 2, determining whether the voltage of the lithium ion battery is smaller than a voltage threshold value; 3, charging the lithium ion battery; 4, determining whether there is a user using a restroom or not; and 5, opening a solenoid valve for drainage, and performing charging of the lithium io