Dynamic multiplexing method for multi-payload data of unmanned aerial vehicles

A technology for data dynamics and data load, applied in digital transmission systems, adjustment of transmission methods, electrical components, etc., can solve the problems of wasting link resources, efficient multiplexing, and low effective utilization of transmission channels, and achieves a reduction in resource bandwidth. The effect of using, improving the effective utilization, and occupying less bandwidth resources

Active Publication Date: 2018-05-04
10TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that there is a certain idea of ​​simple data fusion, but it is only simple or fixed data multiplexing, and there are also defects such as waste of link resources, low efficiency of multiplexing and effective utilization of transmission channels.

Method used

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  • Dynamic multiplexing method for multi-payload data of unmanned aerial vehicles
  • Dynamic multiplexing method for multi-payload data of unmanned aerial vehicles

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] refer to figure 1 . The hardware device implementing the method of the present invention is mainly a protocol processing device composed of a programmable gate array chip FPGA and a digital signal processing DSP chip. Among them, the FPGA chip mainly realizes the interface function, which is used to access load equipment including RS422, RS232, LVDS, USB, network, optical fiber and other interfaces; the DSP chip mainly realizes the protocol processing function, including data segmentation and adaptation. , storage, multiplex framing and other operations. After each payload data access protocol processes the terminal equipment, preprocessing operations such as data segmentation, data adaptation, and storage are performed separately. After the scheduled multiplexing command is initiated, the multiplexing and framing are performed. At this time, the DSP chip scan...

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Abstract

The invention provides a multi-load data dynamic multiplexing method of an unmanned aerial vehicle. The unmanned aerial vehicle communication is divided into three application scenarios in high speed, middle speed and low speed; in combination with an actual feature of each application scenario, a protocol processing device composed of a field programmable gate chip (FPGA) and a digital signal processing chip is used for initiating the multiplexing of a transmission frame according to timing cycle; a mixed multiplexing scheme of the fixed multiplexing based on low-speed data and the dynamic multiplexing based on high-speed data is adopted under the high-speed scenario; a dynamic multiplexing scheme based on a fixed length unit is adopted under the middle-speed scenario; and a pure dynamic multiplexing scheme is adopted under the low-speed scenario. The operation flows such as the data segment, data adaptive, storage, dynamic multiplexing framing and the like are orderly performed after each data load is accessed into the protocol processing device. Compared with the prior art, the method provided by the invention has the features of being less in bandwidth resource occupation and high in multiplexing efficiency, the content of the transmission frame is dynamic optimized in real time, and the effective utilization of a link transmission channel is extremely improved.

Description

technical field [0001] The invention relates to a multi-load data dynamic multiplexing method used in the UAV measurement and control communication protocol. Background technique [0002] In recent years, the application of unmanned aerial vehicle systems has become more and more extensive, and the user's demand for multi-task and multi-load access capabilities of unmanned aerial vehicles is also increasing. There are more and more types of information interacted between users and measurement and control communication systems. The interface form also tends to be diversified. The UAV and the ground equipment rely on the link communication protocol for data communication and transmission. The data types include telemetry information, ranging information, real-time image information, etc. At present, the existing communication transmission methods mainly include the following types: (1) Various data are transmitted by their own link channels, and the transmission channels betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0008
Inventor 罗伟黄华园宗周兵
Owner 10TH RES INST OF CETC
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