Wireless signal relay switching method and system for unmanned aerial vehicle

Abstract

The wireless signal relay switching method and system for the unmanned aerial vehicles are used for communication between a ground station C and at least two first unmanned aerial vehicles A and second unmanned aerial vehicles B and communication among all the unmanned aerial vehicles. The switching method comprises the following steps: S1, receiving serial port data of a ground station computer or a remote controller at a ground station C, and orderly transmitting the serial port data; s2, when data of the first unmanned aerial vehicle A and the second unmanned aerial vehicle B are received, time slot numbers of data packets are followed up, downlink data of the first unmanned aerial vehicle A or the second unmanned aerial vehicle B are judged, and the downlink data are sent to different serial ports respectively; s3, a second unmanned aerial vehicle B serving as a relay receives data of the ground station C and the first unmanned aerial vehicle A, follows up the time slot number and transmits the time slot number; s4, the first unmanned aerial vehicle A receives the data of the ground station C and the second unmanned aerial vehicle B serving as the relay machine, follows up the time slot number and transmits the data out at the same time; and mutual relay between the first unmanned aerial vehicle A and the second unmanned aerial vehicle B is realized.

Description

【Technical field】 [0001] The invention relates to unmanned aerial vehicle control technology, in particular to a wireless signal relay switching method and system for unmanned aerial vehicles. 【Background technique】 [0002] UAVs can fly remotely or autonomously, and are widely used due to their advantages of flexibility and low cost. The drones on the market in the past generally fly within the line of sight and the flight distance is short. However, as the application environment becomes more complex and the task difficulty increases, due to the influence of terrain and obstacles, it is easy to lose the signal, resulting in no After the man-machine communication was interrupted and returned, the mission could not be performed normally. [0003] If a relay node can be introduced in the air, the UAV can relay the signal back to maintain reliable communication, so that the mission UAV can fly farther. The existing relay node technical scheme generally adopts a wifi hotspot,...

AI Technical Summary

Problems solved by technology

The existing relay node technical scheme generally adopts a wifi hotspot, and the drone and the ground station are connected to this wifi hotspot to form a relay connection. However, if this situation exists, insufficient power and some other failures will inevitably occur. Once the relay node is powered off, both ends cannot communicate normally

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