Quad-rotor unmanned aerial vehicle safety distance keeping system and method

The invention relates to a quad-rotor unmanned aerial vehicle safety distance keeping system, which comprises a flight controller, a power supply module and a driving module which are connected with one another in an unmanned aerial vehicle, and an optical flow module, a distance measuring module and a vision module which are connected with the flight controller, wherein the optical flow module isused for detecting flight position information, the distance measuring module is used for detecting flight height information, the vision module is used for collecting image information and carryingout cable detection according to the image information, the power supply module is used for supplying power to the driving module and the flight controller, and the driving module is used for receiving signals of the flight controller and controlling actions of the unmanned aerial vehicle. Compared with the prior art, the system and method provided by the invention have the advantages of real-timeness and accuracy, ensuran