Wireless charging method for sensing network node

The invention discloses a wireless charging method for a sensing network node. When an electric quantity of the sensing network node is extremely low, a charging request is sent to a terminal control unit; the terminal control unit receives the charging request and sends a charging instruction to a four-rotor-wing mobile charging unit; after receiving the charging instruction, the four-rotor-wing mobile charging unit firstly detects the own electric quantity; if the electric quantity is insufficient, the terminal control unit charges the four-rotor-wing mobile charging unit until the electric quantity of the four-rotor-wing mobile charging unit is sufficient; the four-rotor-wing mobile charging unit flies to a target node and stops on a node stopping frame to charge the node according to a coordinate position in the charging instruction; and the sensing network node detects that the electric quantity of the node is sufficient or the four-rotor-wing mobile charging unit detects that the own electric quantity is insufficient, charging is stopped; and the four-rotor-wing mobile charging unit returns to a terminal stopping frame to be charged. The wireless charging method is high in self-control capacity; and the electric energy complementation problem of the sensing network node in a complicated environment is solved.