CN204408536U - The large discharge graphic transmission equipment of unmanned plane during flying device - Google Patents
The large discharge graphic transmission equipment of unmanned plane during flying device Download PDFInfo
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Abstract
Description
技术领域 technical field
本实用新型涉及无人机技术领域,更具体地说,是涉及一种无人机飞行器用的大流量图像传输设备。 The utility model relates to the technical field of unmanned aerial vehicles, in particular to a large-flow image transmission device for unmanned aerial vehicles.
背景技术 Background technique
无人机又叫无人飞行器,即是不需要设飞行员驾驶舱的、无人驾驶的小型飞行器。无人机作为空中机器人,在军事上可用与侦查、监视等,在民用上可用于大地测量、遥感等,主要用于获取高分辨率、能描述物体集合形态的二位或三维图像,但是高分辨率图像数据量相当大,而且随着地面分辨率提高,需要传输的图像数据量呈几何级数增长,数据码数率也迅速增长,因此,图像的高速传输已经成为制约无人机应用的重要问题。 Unmanned aerial vehicles, also known as unmanned aerial vehicles, are unmanned small aircraft that do not require a pilot's cockpit. UAV, as an aerial robot, can be used for military reconnaissance, surveillance, etc., and can be used for geodesy, remote sensing, etc. in civilian use. It is mainly used to obtain high-resolution two-dimensional or three-dimensional images that can describe the shape of an object collection. The amount of resolution image data is quite large, and as the ground resolution increases, the amount of image data to be transmitted increases geometrically, and the data bit rate also increases rapidly. Therefore, high-speed image transmission has become a constraint for the application of drones. important question.
现有的旋翼无人机通常采用模拟信号实现无人机与地面之间的数据传输,因而难以提供分辨率高的高清图像数据。 Existing rotary-wing drones usually use analog signals to transmit data between the drone and the ground, so it is difficult to provide high-resolution high-definition image data.
实用新型内容 Utility model content
本实用新型要解决的技术问题是,提供一种无人机飞行器用的大流量图像传输设备,通过无线通讯向地面站传输高分辨率图像,减小误码率、提高实时性,以克服现有技术的不足。 The technical problem to be solved by the utility model is to provide a large-flow image transmission device for unmanned aerial vehicles, which transmits high-resolution images to the ground station through wireless communication, reduces the bit error rate, improves real-time performance, and overcomes the current There are technical deficiencies.
本实用新型解决其技术问题所采用的技术方案是:一种无人机飞行器用的大流量图像传输设备,包括机载电子设备,在无人机上设置有微波盒,所述微波盒内设置有飞行器姿态信息数据接口、视频数据接口、视频转换模块、CPU、网卡、数字电台模块,所述飞行器姿态信息数据接口通过UART数据线连接数字电台模块,所述视频数据接口通过视频转换模块连接CPU,所述CPU通过网卡连接数字电台模块,所述视频数据接口用于采集机载电子设备的视频信号,所述CPU内置压缩模块,所述压缩模块用于将机载电子设备的视频信号进行压缩并将压缩后形成的H.264压缩包并发送至数字电台模块。 The technical scheme adopted by the utility model to solve the technical problem is: a large-flow image transmission device for unmanned aerial vehicles, including airborne electronic equipment, a microwave box is arranged on the unmanned aerial vehicle, and a microwave box is arranged in the microwave box. Aircraft attitude information data interface, video data interface, video conversion module, CPU, network card, digital radio module, described aircraft attitude information data interface connects digital radio module by UART data line, described video data interface connects CPU by video conversion module, The CPU is connected to the digital radio module through a network card, the video data interface is used to collect video signals of the airborne electronic equipment, the CPU has a built-in compression module, and the compression module is used to compress the video signals of the airborne electronic equipment and The H.264 compression package formed after compression is sent to the digital radio module.
所述视频数据接口包括HDMI接口,所述视频数据接口还包括CVBS接口、或YPbPr接口。 The video data interface includes an HDMI interface, and the video data interface further includes a CVBS interface or a YPbPr interface.
还包括MCU模块,所述MCU模块通过UART数据线连接数字电台模块与CPU,所述MCU用于接收外部指令及视频输入格式的切换。 It also includes an MCU module, the MCU module is connected to the digital radio module and the CPU through a UART data line, and the MCU is used for receiving external instructions and switching of video input formats.
与现有技术相比,本实用新型的有益效果是: Compared with the prior art, the beneficial effects of the utility model are:
本实用新型通过微波盒的电台模块,将信息数据通过数字信号传输到地面站,支持1080I,并具有8兆的带宽,可以实现高清图像传输,并减小误码率与提高实时性,实现了大范围、可靠的数据传输,解决了无人机图像数据实时快速传输的瓶颈问题。地面站将无人机采集回传的信息进行可视化表达,从而为应急指挥决策提供更为直观的数据。 The utility model transmits the information data to the ground station through the digital signal through the radio module of the microwave box, supports 1080I, and has a bandwidth of 8 megabytes, can realize high-definition image transmission, and reduces the bit error rate and improves real-time performance, realizing Large-scale and reliable data transmission solves the bottleneck problem of real-time and fast transmission of UAV image data. The ground station visualizes the information collected and returned by the UAV, so as to provide more intuitive data for emergency command and decision-making.
本实用新型还能通过微波盒的电台模块,将飞行参数实时获取与显示,进行采集数据分析及可视化处理等。 The utility model can also acquire and display the flight parameters in real time through the radio module of the microwave box, and perform data collection analysis and visualization processing.
附图说明 Description of drawings
图1为本实用新型的微波盒电路原理框图。 Fig. 1 is a schematic block diagram of the microwave box circuit of the present invention.
图2为本实用新型的地面站接收机电路原理框图。 Fig. 2 is a schematic block diagram of the ground station receiver circuit of the present invention.
图3为本实用新型的地面站数字电台模块接口电路图。 Fig. 3 is the interface circuit diagram of the ground station digital radio module of the present invention.
图4为本实用新型的地面站USB网卡电路图。 Fig. 4 is the circuit diagram of the USB network card of the ground station of the present invention.
图5为本实用新型的微波盒数字电台模块(DDL)接口电路图。 Fig. 5 is the interface circuit diagram of the digital radio module (DDL) of the microwave box of the present invention.
图6为本实用新型的微波盒网卡及CPU相关电路图。 Fig. 6 is a circuit diagram related to the microwave box network card and CPU of the present invention.
具体实施方式 Detailed ways
下面结合附图及实施例对本实用新型作进一步描述。 Below in conjunction with accompanying drawing and embodiment the utility model is described further.
对于无人驾驶的飞行器系统,包括空中和地面两大部分。空中部分包括:无人机、机载电子设备和辅助设备等,主要完成飞行任务。地面部分包括:飞行器定位系统、飞行器控制系统、导航系统以及发射回收系统,主要完成对飞行器的遥控、遥测和导航任务,空中与地面系统通过数据链路建立起紧密联系。发明人基于对无人飞行器的数据传输进行了研究和探讨,对无人机地面站、无线通信、飞行控制中的数据传输环节,在硬件电路、软件程序、可靠性措施等方面进行了大量的试验,得以确定本发明的方案。 For unmanned aircraft systems, it includes two parts: air and ground. The air part includes: UAV, airborne electronic equipment and auxiliary equipment, etc., mainly to complete the flight mission. The ground part includes: aircraft positioning system, aircraft control system, navigation system, and launch recovery system. It mainly completes the remote control, telemetry and navigation tasks of the aircraft. The air and ground systems are closely connected through data links. Based on the research and discussion of the data transmission of unmanned aerial vehicles, the inventor has carried out a lot of research on the data transmission links in the ground station of the unmanned aerial vehicle, wireless communication, and flight control in terms of hardware circuits, software programs, and reliability measures. Test, be determined the scheme of the present invention.
参见图1-6,本实用新型的微波盒电台模块,将信息数据通过数字信号传输到地面站,采用RTSP实时流传输协议有效地通过IP网络传送多媒体数据,协议支持1080I,并具有8兆的带宽,可以实现高清图像传输,并减小误码率与提高实时性。电台模块采用Microhard Systems Inc.生产的IPnDDL2450,而CPU则使用恩智浦半导体NXP生产的ASC8850AET。无人机上的微波盒设置有视频转换模块、CPU、网卡、数字电台模块,无人机上的机载电子设备(摄录机)可通过HDMI接口、CVBS接口、YPbPr接口等三个接口经过视频转换模块后进入CPU,CPU的芯片自带软件包,将信息压缩产生压缩包,通过数字电台模块发射出去。视频数据的输入方式有三种,每种输入方式的数据文件名不相同,通过检测文件名识别数据流的输入方式。HDMI接口能够传递无损的高清视频内容,可以传输9个通道的无损或压缩之后的音频内容,使地面站可收到大流量高清视频,将无人机采集回传的信息进行可视化表达,从而为应急指挥决策提供更为直观的数据,并实时获取与显示飞行参数,方便研究和数据分析及数据的可视化处理。H.264是视频压缩的一种方式,压缩后的内容与地面站的通讯协议为标准rtsp,另CPU通过网卡与数字电台模块连接,视频压缩包走的也是这条通路,当有数据从CPU通过网卡流进数字电台模块时,数字电台模块即将数据发送到地面接收设备。当地面站通过rtsp客户端发出播放视频请求时,CPU即对视频信号进行编码压缩及发送至数字电台模块,视频帧率为30fps,视频压缩包由CPU定时存取。接收机端的数字电台模块接收到发射机端的电台模块发射出的数据后,通过USB网卡传输至地面站,地面站即进行解码显示。 Referring to Figures 1-6, the microwave box radio module of the present invention transmits information data to the ground station through digital signals, adopts RTSP real-time streaming transmission protocol to effectively transmit multimedia data through the IP network, the protocol supports 1080I, and has 8 megabytes bandwidth, it can realize high-definition image transmission, reduce bit error rate and improve real-time performance. The radio module uses IPnDDL2450 produced by Microhard Systems Inc., while the CPU uses ASC8850AET produced by NXP Semiconductors. The microwave box on the UAV is equipped with a video conversion module, CPU, network card, and digital radio module. The onboard electronic equipment (camcorder) on the UAV can undergo video conversion through three interfaces including HDMI interface, CVBS interface, and YPbPr interface. After the module enters the CPU, the chip of the CPU has its own software package, which compresses the information to generate a compressed package, and transmits it through the digital radio module. There are three input methods of video data, each input method has a different data file name, and the input method of the data stream is identified by detecting the file name. The HDMI interface can transmit lossless high-definition video content, and can transmit 9 channels of lossless or compressed audio content, so that the ground station can receive large-flow high-definition video, and visualize the information collected and returned by the drone, so as to provide Emergency command decision-making provides more intuitive data, and real-time acquisition and display of flight parameters facilitates research, data analysis, and data visualization. H.264 is a way of video compression. The communication protocol between the compressed content and the ground station is standard rtsp, and the CPU is connected to the digital radio module through the network card. The video compression package also takes this path. When there is data from the CPU When the data flows into the digital radio module through the network card, the digital radio module will send the data to the ground receiving equipment. When the ground station sends a video playback request through the rtsp client, the CPU encodes and compresses the video signal and sends it to the digital radio module. The video frame rate is 30fps, and the video compression package is regularly accessed by the CPU. After the digital radio module at the receiver end receives the data transmitted by the radio module at the transmitter end, it is transmitted to the ground station through the USB network card, and the ground station decodes and displays it.
而且,微波盒上还有飞行器运行数据接口,通过数据线连接数字电台模块,由数字电台模块直接发回地面。MCU模块通过UART数据线连接数字电台模块与外部UART接口,所述MCU用于接收外部指令及视频输入格式的切换。 Moreover, there is an aircraft operation data interface on the microwave box, which is connected to the digital radio module through a data cable, and is directly sent back to the ground by the digital radio module. The MCU module is connected to the digital radio module and the external UART interface through the UART data line, and the MCU is used for receiving external commands and switching of video input formats.
在地面站,相应设置数字电台模块用于接收来自无人机微波盒发射的多媒体数据,经过USB网卡和HUB多端口的转发器,传输到地面站来。UART的数据转USB后经HUB多端口的转发器传输给地面站。 At the ground station, a digital radio module is set up to receive the multimedia data transmitted from the microwave box of the UAV, and transmit it to the ground station through the USB network card and the HUB multi-port transponder. The UART data is transferred to USB and then transmitted to the ground station through the HUB multi-port transponder.
微波盒使用H264编码,使用新一代数字视频压缩标准,采用分层技术,从形式上将编码和信道隔离开来,标准对编码视频比特流的语法结构和对该比特流解码的方法进行定义,支持4X4和16X16两种帧内编码模式,而且是对预测误差进行编码,因此编码效率更高,因此,能减小误码率、提高实时性。 The microwave box uses H264 encoding, uses a new generation of digital video compression standards, and adopts layered technology to isolate the encoding and channel in form. The standard defines the syntax structure of the encoded video bit stream and the method of decoding the bit stream. It supports 4X4 and 16X16 intra-frame encoding modes, and encodes the prediction error, so the encoding efficiency is higher, so it can reduce the bit error rate and improve real-time performance.
本实用新型可完成遥控指令、监测音讯图像的实时回放与显示,飞行记录的存储与显示,充分满足无人机的测控需求。 The utility model can complete remote control commands, real-time playback and display of monitoring audio images, storage and display of flight records, and fully meets the measurement and control requirements of drones.
以上公开仅为本实用新型的具体实施例,并不构成对本实用新型保护范围的限制,对于本实用新型所属技术领域的普通技术人员来说,在不脱离本实用新型的整体构思前提下,依据本实用新型技术方案所作的无需经过创造性劳动的变化和替换,都应落在本实用新型的保护范围之内。 The above disclosure is only a specific embodiment of the utility model, and does not constitute a limitation to the protection scope of the utility model. The changes and replacements made by the technical solution of the utility model without creative labor shall fall within the protection scope of the utility model.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105979264A (en) * | 2016-04-19 | 2016-09-28 | 成都翼比特自动化设备有限公司 | Long-distance large-data-volume wireless communication method for unmanned aerial vehicle |
CN109194382A (en) * | 2018-09-12 | 2019-01-11 | 北京航空航天大学东营研究院 | A kind of unmanned plane during flying verification data-link data fusion method and system |
CN118138802A (en) * | 2024-04-30 | 2024-06-04 | 哈尔滨商业大学 | Deep learning-fused 5G broadcast television image communication method |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105979264A (en) * | 2016-04-19 | 2016-09-28 | 成都翼比特自动化设备有限公司 | Long-distance large-data-volume wireless communication method for unmanned aerial vehicle |
CN109194382A (en) * | 2018-09-12 | 2019-01-11 | 北京航空航天大学东营研究院 | A kind of unmanned plane during flying verification data-link data fusion method and system |
CN118138802A (en) * | 2024-04-30 | 2024-06-04 | 哈尔滨商业大学 | Deep learning-fused 5G broadcast television image communication method |
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