New quadcopter tech allows drones to recharge on power lines

Scientists developed a quadcopter that recharges using a passively actuated gripper.

Battery life may no longer be a limitation for drones, thanks to an experimental quadcopter that can recharge on power lines. Developed by scientists at the University of Southern Denmark, the technology allows drones to stay aloft indefinitely.

The quadcopter, built on a Tarot 650 Sport frame, includes an electric propulsion system, a 7,000-mAh battery, and a variety of electronic components. A key feature is the passively actuated power-line-gripper, which allows the drone to attach itself to power lines for recharging.

Using onboard cameras and radar, the drone detects low battery levels and locates the nearest power line. It then flies towards the line, where the gripper securely attaches to recharge the battery. After recharging, the drone resumes its tasks, primarily aimed at inspecting power lines.

Field tests at Denmark's HCA Airport demonstrated the drone's capability, with successful recharging during multiple inspection sessions. Researchers are now enhancing the system's robustness for use in remote areas and adverse weather conditions.

This breakthrough could significantly extend the operational time of drones used in various applications, making them more efficient and reliable.