Small constant-tension power supply system for unmanned aerial vehicle

Abstract

The invention discloses a small constant-tension power supply system for an unmanned aerial vehicle. The system includes a power supply subsystem, a reel and release subsystem, a detection subsystem and a drive subsystem. The power supply subsystem includes a sliding ring and a power supply cable, one end of the power supply cable is connected with a ground power station through the sliding ring,and the other end of the system winds an outer roller and is connected with the unmanned aerial vehicle for supply power to the unmanned aerial vehicle after lead-out; the reel and release subsystem includes an inner roller, the outer roller and a torsion spring installed between the inner roller and the outer roller, cable reel and release can be achieved through rotation of the outer roller, thetorsion spring generates torque acting on the outer roller, and it is ensured that a power supply cable still keeps tension; the detection subsystem detects the angle difference between the inner roller and the outer roller, and a control signal is generated to drive a stepper motor to move. The system provides power for the unmanned aerial vehicle through a light power supply cable, and the functions of automatic reeling and releasing can be achieved according to the flying height and distance of the unmanned aerial vehicle, and the unmanned aerial vehicle can fly in air for a long time.

Description

technical field [0001] The invention relates to the field of robots and automation, in particular to a constant tension power supply system for a small unmanned aerial vehicle. Background technique [0002] Small unmanned aerial vehicles, typically represented by multi-rotor aircraft, are small in size, light in weight, easy to carry, less restricted by the site for takeoff and landing, flexible in operation, hoverable, and low in price, and can easily enter various harsh environments that are difficult for people to enter Environmental and other advantages, it has been widely used in many fields such as aerial photography, film and television shooting, regional monitoring, power inspection, environmental protection monitoring, agriculture, forestry and plant protection, aerial base stations, disaster rescue, surveying, mapping and exploration. With the development of the smart electronics industry, the application scenarios of small UAVs are becoming more and more extensive...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of small unmanned aerial vehicles, such as insufficient battery life and the inability to fly or hover for a long time, the purpose of the present invention is to propose a constant tension power supply system for small unmanned aerial vehicles. Cable tension or UAV flight height and distance to retract and release the power supply cable, supply power or charge it during its work, and improve the UAV's airborne time

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