Research on Autonomous Charging Method for Quad-Rotor Drone Based on Magnetic Induction Coupling

The limited battery capacity carried by drones has greatly affected their endurance. When the drone detects a low battery during operation, if it can replenish energy independently, it will greatly improve the drone's operating range and working time, which has profound significance for the normal operation of drones in automation scenarios. In response to the issue of autonomous charging for unmanned aerial vehicles, this article proposes a method for autonomous charging of quadcopter unmanned aerial vehicles. The method of using machine vision to recognize Apriltag markers enables the drone to accurately land at the charging position. The structure of a rounded rectangular coupling coil allows the drone to wirelessly obtain electricity. The system hardware circuit uses the LCC-S compensation structure to improve the transmission efficiency of the system. The experimental results indicate that this system can provide power to the drone. The method proposed in this article provides a reference for achieving autonomous energy acquisition of unmanned aerial vehicles.