2results about How to "Avoid error control" patented technology

The invention relates to the technical field of audio and video transmission, in particular to an inspection unmanned aerial vehicle audio and video high-reliability transmission method based on a wireless network, and the method comprises the steps: periodically collecting the flight speed and the network throughput of an inspection unmanned aerial vehicle, and carrying out the time reference alignment of the flight speed and the network throughput; fitting a linear model between the motion and throughput of the unmanned aerial vehicle on the premise of effective motion of the unmanned aerial vehicle, so as to determine an association slope and a trend confidence coefficient between the motion and throughput of the unmanned aerial vehicle; constructing a predicted bandwidth function changing along with time, calculating the predicted available capacity of a transmission link in a future local time period so as to evaluate the congestion possibility of the link under a future transmission demand, and executing a quantitative packet loss strategy; and setting a three-dimensional trigger condition, capturing an interrupt signal of a link in advance, and executing atomic operation of key frame preemptive sending. The video transmission reliability and the operation safety of the unmanned aerial vehicle in the non-line-of-sight fly-around scene are improved.

The application discloses a kind of passage control method, system and passage control device, wherein passage control method includes the following steps: a carrier determines its movement to the upstream end of a cross track section passage request point, sends passage request to passage control program;Passage control program confirms whether the carrier can pass;If not, send the message of not passable and wait to the carrier;If yes, send the message of passable to the carrier, simultaneously, passage control program determines that cross track section switches to not passable state;Carrier determines its movement to release point, sends release request to passage control program;Passage control program determines that cross track section restores to passable state.The application changes the conventional mode of prior art using hardware ZCU, uses passage control program to carry out the passage control of cross track section, only needs a device with passage control program to realize corresponding control, greatly reduces equipment cost and construction difficulty.