Multi-redundancy unmanned aerial vehicle data transmission system and method
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A data transmission system and technology for unmanned aerial vehicles, applied in the field of redundant unmanned aerial vehicle data transmission, can solve the problems of difficult digital processing of video images, narrow coverage, etc. Effect
Active Publication Date: 2018-06-19
AVIC LIANCHUANG TECH CO LTD +1
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[0004] For some applications that require video shooting, UAVs also need to capture video images through airborne video acquisition equipment, because these video images are not easy to digitize, and the frequency of radio waves is about 10KHz~30,000,000KHz, or the wavelength of 30,000m~10μm Electromagnetic waves, the coverage is narrow, so the existing technology is only suitable for application in some fields that do not require high real-time and reliability
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Embodiment 1
[0070] Embodiment 1 of the present invention provides a redundant UAV data transmission system, its specific structure is as follows figure 1 shown, including:
[0071] UAV ground control station 10, ground data redundancy fusion computer 20, airborne data redundancy fusion computer 30, flight control computer 40 and airborne image acquisition device 50.
[0072] The above-mentioned flight control computer 40 performs flight control according to the airborne sensor data, etc., and collects flight control data; provides the flight control data to the actuation controller to control the operation of the UAV, and transmits relevant flight telemetry data to the aircraft. Load data redundancy fusion computer 30.
[0073] The above-mentioned airborne image collection device 50 is used to collect video image data in real time, and transmit the video image data to the airborne data redundancy fusion computer 30 in real time.
[0074] The aforementioned airborne data redundancy fusio...
Embodiment 2
[0098] Embodiment 2 of the present invention provides a transmission method based on the above-mentioned redundant UAV data transmission system, which includes the following steps:
[0099] Step S101, the onboard data redundancy fusion computer 30 acquires the flight telemetry data transmitted by the flight control computer 40 and the video image data collected by the airborne image acquisition device 50 in real time;
[0100] Step S102, the onboard data redundancy fusion computer 30 selects corresponding data for each link channel according to the link data selection mechanism, and performs data encapsulation according to the set communication protocol;
[0101] The link data selection mechanism is as follows:
[0102] The 4G communication link path selects all flight telemetry data and video image data for air-to-ground transmission;
[0103] The satellite communication link channel selects relatively critical UAV position, attitude and other data in the flight telemetry da...
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Abstract
The invention provides a multi-redundancy unmanned aerial vehicle data transmission system and method. An onboard data redundancy fusion computer obtains flight telemetry data and video image data inreal time; data are selected according to a link data selection mechanism and are packaged; the data are transmitted to a ground data redundancy fusion computer via a corresponding data link channel;and the ground data redundancy fusion computer receives data packets from the data link channels in real time and obtains a data type to which data contents belong according to a data type identifier,verifies the correctness of the data via a verification bit and discards the data of the same data type which arrive through the other data link channels according to a data sequence identifier. According to the multi-redundancy unmanned aerial vehicle data transmission system and method, transmission data contents are selectively selected corresponding to different data link characteristics through the link data selection mechanism, thereby improving the data transmission stability and reliability under the condition of meeting the data transmission content requirements maximally, and improving the information transmission breadth and speed.
Description
technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a redundant unmanned aerial vehicle data transmission technology. Background technique [0002] Unmanned aerial vehicle (Unmanned Aerial Vehicle, referred to as UAV) is an unmanned aircraft controlled by radio remote control equipment and its own program control device. With the rapid development of drone technology, drones have been widely used in civil industries such as urban management, agriculture, geology, meteorology, electric power, emergency rescue, and video shooting. [0003] Existing UAV data transmission systems usually use radio wave uplink and downlink channels to transmit data. The ground equipment packs the flight mission control commands into an instruction form and sends them to the UAV through the radio wave uplink channel. The on-board flight control computer of the UAV decodes the instructions to obtain signals such as switches or continuous instruc...
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