Data transmission device and unmanned aerial vehicle comprising same

Abstract

The invention provides a data transmission device and an unmanned aerial vehicle comprising the same, and the data transmission device comprises an antenna module, an interface module, a wireless baseband module and a route switching module. Wherein the antenna module is of a multi-antenna structure so as to realize multi-antenna sending and receiving of data; the wireless baseband module adopts an orthogonal frequency division multiplexing technology to improve spectrum efficiency, and the wireless baseband module is configured to be capable of dynamically allocating bandwidth and support multi-band data transmission; the routing switching module is provided with a plurality of internal interfaces so as to realize data transmission among multiple devices at the same time; the interface module is integrated with a plurality of external interfaces, and the plurality of internal interfaces are respectively connected with the corresponding external interfaces. The data transmission device provided by the invention solves the problems of long transmission delay, data transmission lagging, single application scene, incapability of being suitable for complex application scenes and the like during long-distance data transmission.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of data transmission, and particularly relates to a data transmission device and a drone comprising the same. BACKGROUND

[0002] With the progress of science and technology and the continuous change of use requirements, the application range and field of long-distance wireless transmission equipment are becoming wider and wider. In order to meet the operation requirements of various application fields, the wireless data transmission equipment needs to connect more and more load devices, needs to process and transmit more and more data, and needs to meet higher real-time stability requirements and longer distance requirements, which puts forward higher requirements on various performance indicators of wireless data transmission.

[0003] At present, long-distance wireless data transmission for non-satellite communication in the unmanned aerial vehicle industry can maintain a relatively good data and image transmission rate and stability within a range of 1-30 km. Limited by power amplifier technology, baseband technology and overall design technology, transmission quality will significantly decrease at a farther distance, data transmission rate will rapidly decrease, delay will be large, and video will frequently be frozen. In order to pursue a small size design, the number of interfaces of the data transmission device is limited, which leads to the transmission of only one video signal and cannot meet the requirements of multi-video and multiple serial port load data transmission. The existing data transmission device usually only supports one networking mode, and the data transmission frequency band is single, which makes it difficult to meet the requirements of unmanned aerial vehicle cluster multi-machine cooperation and complex and changeable application scenarios. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a data transmission device and a drone comprising the same, so as to solve the problems of large transmission delay, data transmission freezing, single application scenario and the like in long-distance data transmission.

[0005] In order to solve or improve the above technical problems to some extent, according to one aspect of the present application, a data transmission device is provided, comprising: an antenna module, an interface module, a wireless baseband module and a routing switching module.

[0006] The antenna module is a multi-antenna structure to realize multi-antenna sending and receiving of data.

[0007] The wireless baseband module adopts orthogonal frequency division multiplexing technology to improve spectral efficiency, and is configured to dynamically allocate bandwidth and support multi-band data transmission.

[0008] The routing switching module is configured with multiple internal interfaces to simultaneously realize data transmission between multiple devices.

[0009] The interface module is integrated with a plurality of external interfaces, and the plurality of internal interfaces are connected with corresponding external interfaces.

[0010] In some embodiments, the routing and switching module comprises a wifi unit, a router unit and a USB unit, wherein the data wireless transmission is realized through the wifi unit, the router unit is configured with a plurality of Ethernet RJ45 interfaces, and a plurality of serial interfaces are expanded based on the USB unit.

[0011] In some embodiments, the data transmission device further comprises a radio frequency power amplification module for gain amplification of radio frequency signals to ensure the stability of long-distance data transmission.

[0012] In some embodiments, the wireless baseband module is configured to automatically hop across frequency bands based on the data transmission environment to improve the anti-interference ability of data transmission.

[0013] In some embodiments, the wireless baseband module and the routing and switching module are arranged in a stacked form so that the wireless baseband module and the routing and switching module share a plurality of internal interfaces.

[0014] In some embodiments, the wireless baseband module adopts a flattened system architecture to reduce the number of levels in the system architecture, thereby reducing the data transmission path and simplifying the data processing complexity.

[0015] In some embodiments, the wireless baseband module is configured to configure corresponding resources and priorities based on data types to reduce the delay of high-priority data in end-to-end transmission.

[0016] In some embodiments, the wireless baseband module is configured to configure different networking modes based on the transmission requirements of data.

[0017] In some embodiments, the data transmission device comprises a shell, and the shell is made of an alumina alloy to improve the heat dissipation capacity and shielding effect of the data transmission device.

[0018] According to an embodiment of the present application, a kind of unmanned plane is provided, the data transmission device of any one embodiment described above.

[0019] Compared with the prior art, the data transmission device and the unmanned plane comprising the same have obvious advantages and beneficial effects. The data transmission device and the unmanned plane comprising the same can achieve considerable technical progress and practicality, and have wide industrial utilization value, which at least has the following advantages:

[0020] The data transmission device of the present application has innovative technical solutions and interface design, high-reliability radio frequency PCB design and whole machine EMC design, multiple interface conversion compatible design, realizes smaller size, improves transmission rate and distance, and can realize multiple networking modes, has stronger anti-interference capability, and at the same time, rich and perfect communication interfaces can simultaneously access multiple data acquisition and serial port devices, greatly expands the application range of the data link, improves the practicality, applicability and stability of the data transmission device, and also simplifies the difficulty of system integration design.

[0021] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A schematic block diagram of the data transmission device of an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined invention purpose, the specific embodiments of the data transmission device and the unmanned aerial vehicle comprising the same according to the present application and their effects are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] As shown in Figure 1 , the data transmission device of an embodiment of the present application comprises an antenna module 10, an interface module 20, a wireless baseband module 30 and a routing switching module 40.

[0025] The antenna module 10 adopts a multi-antenna structure to realize MIMO (Multi-Input & Multi-Output, i.e. multi-antenna transmission and reception of data transmission) of data transmission. The data transmission device of the present application can effectively improve the capacity, coverage range and signal-to-noise ratio of the system through the design of the multi-antenna structure, and can multiply the capacity and spectrum utilization of the data transmission device without increasing the bandwidth.

[0026] In a specific embodiment, the antenna module 10 adopts a dual-antenna structure, adopts 2x2 MIMO technology, and realizes the effect of double transmission and double reception of electromagnetic wave signals.

[0027] The wireless baseband module 30 adopts OFDM (Orthogonal Frequency Division Multiplexing) technology, and the wireless baseband module 30 is used in cooperation with the antenna module 10 to realize OFDM+MIMO, so as to improve the spectrum efficiency.

[0028] The wireless baseband module 30 is configured to dynamically allocate bandwidth and support multi-band data transmission.

[0029] Specifically, the wireless baseband module 30 can realize flexible allocation of bandwidth of 1.4 / 3 / 5 / 10 / 20 / 40 MHz. By dynamically adjusting the bandwidth based on different data transmission requirements, the transmission speed and data transmission quality can be guaranteed. The wireless baseband module 30 can support 500 MHz / 600 MHz / 1.4 GHz / 5.8 GHz frequency bands and can realize automatic frequency switching across frequency bands, so that the data transmission can adapt to complex environments and effectively improve the anti-interference ability of data transmission.

[0030] Of course, the frequency band of the wireless baseband module 30 can also be customized according to requirements, such as 230 MHz-6 GHz.

[0031] In an embodiment, the wireless baseband module 30 adopts a flattened system architecture to reduce the number of levels in the system architecture, thereby reducing the data transmission path and simplifying the data processing complexity.

[0032] The flattened system architecture is a more compact and efficient system design method achieved by reducing the management or processing level and compressing the function modules. In this embodiment, the core of the flattened system architecture of the wireless baseband module 30 is to simplify the protocol stack level, thereby reducing the path length of data transmission and the complexity of data processing.

[0033] In an embodiment, the wireless baseband module 30 is configured to configure corresponding resources and priorities based on data types to reduce the delay of high-priority data in end-to-end transmission.

[0034] In this embodiment, the wireless baseband module 30 allocates different resources (such as bandwidth, processing time, etc.) according to different data types. At the same time, based on the setting of the priority, when data transmission is congested, high-priority data (such as real-time voice, video stream, etc.) can be processed first to ensure that high-priority data can obtain sufficient transmission resources, thereby reducing the end-to-end delay of high-priority data.

[0035] In an embodiment, the wireless baseband module 30 is configured to configure different networking modes based on the transmission requirements of data.

[0036] In this embodiment, the wireless baseband module 30 uses MESH self-organizing network technology to realize various networking topologies. For example, point-to-point, point-to-multipoint, mesh topology, etc. Specifically, it can support 32 nodes, 31-hop relay, and support dynamic routing algorithm, support unicast, multicast, and broadcast.

[0037] The routing switching module 40 is configured with multiple internal interfaces to enable simultaneous data transmission between multiple devices, so that multiple devices can simultaneously access the data transmission device. The interface module 20 is integrated with multiple external interfaces, and the multiple internal interfaces of the routing switching module 40 are connected with the multiple external interfaces of the interface module 20 to realize connection with external devices.

[0038] Specifically, the routing switching module 40 includes a wifi unit 300, a router unit 302, and a USB unit 304, wherein the wifi unit 300 is configured to realize wireless data transmission, the router unit 302 is configured with multiple Ethernet RJ45 interfaces, and the USB unit 304 is configured to expand multiple serial interfaces.

[0039] In an embodiment, the routing switching module 40 is configured with 4 network interfaces, 3 serial interfaces, and 1 sbus (Serial Bus) interface. The interface module 20 is configured with 4 network interfaces, 3 serial interfaces, 1 USB interface, 1 sbus interface, and 1 UART (Universal Asynchronous Receiver / Transmitter) interface. The 4 network interfaces of the routing switching module 40 are connected with the 4 network interfaces of the interface module 20, the 3 serial interfaces of the routing switching module 40 are connected with the 3 serial interfaces of the interface module 20, and the sbus interface of the routing switching module 40 is connected with the sbus interface of the interface module 20.

[0040] Optionally, the 4 network interfaces of the routing switching module 40 and the interface module 20 are 100M network interfaces, and the 3 serial interfaces include 2 RS232 interfaces and 1 RS22 interface.

[0041] In an embodiment, the wireless baseband module 30 and the routing switching module 40 are both in the form of a PCB board. During assembly of the data transmission device, the wireless baseband module 30 and the routing switching module 40 are arranged in a stacked manner, i.e., the wireless baseband module 30 is stacked on the routing switching module 40, or the routing switching module 40 is stacked on the wireless baseband module 30.

[0042] In this embodiment, by arranging the wireless baseband module 30 and the routing switching module 40 in a stacked manner, the wireless baseband module 30 can share the multiple internal interfaces of the routing switching module 40.

[0043] In this embodiment, by controlling the line width, line thickness, and number of layers of the PCB board, the radio frequency impedance of the wireless baseband module 30 and the routing switching module 40 can be accurately controlled.

[0044] Specifically, the laminated layers of the PCB boards adopted by the wireless baseband module 30 and the routing switching module 40 are 4 layers, and the power distribution of the electric layers in the PCB boards is reasonably divided, so that the PCB boards have the advantages of good heat dissipation performance, strong anti-interference ability, high electromagnetic compatibility level and the like.

[0045] In an embodiment, the wireless baseband module 30 adopts the HARQ (Hybrid Automatic Repeat Request) technology, so that the data is retransmitted in the case that the data receiver fails to decode, and the data is decoded after being combined with the previously received data, thereby effectively reducing the error rate of data transmission.

[0046] The wireless baseband module 30 of the application adopts the key technologies such as OFDM and MIMO based on the LTE wireless communication standard, supports multiple bandwidth allocation, and has the characteristics of flat system architecture design, effectively reducing system delay, improving system transmission capacity, long transmission distance, large data throughput and strong anti-interference.

[0047] In an embodiment, the data transmission device further comprises a radio frequency power large module for gain amplifying the radio frequency signal in the data transmission process, so as to ensure the stability of long-distance data transmission.

[0048] Specifically, the double 1w radio frequency power amplification module 50 is adopted to improve the gain of the signal, and the maximum gain can reach 33dBm.

[0049] In an embodiment, the data transmission device comprises a shell made of aluminum oxide alloy material. On the one hand, the aluminum oxide alloy has smaller weight per unit volume than other metal materials, which can effectively reduce the weight of the data transmission device. On the other hand, the shell made of aluminum oxide alloy material can quickly transfer the heat generated inside the data transmission device, effectively improving the heat dissipation capacity of the data transmission device. On the other hand, the shell made of aluminum oxide alloy material can have good shielding effect, which can ensure the stable operation of the data transmission device in complex electromagnetic environment.

[0050] Further, the shell of the data transmission device is provided with a cooling fan, so that the heat conducted by the shell can be quickly released, further improving the heat dissipation performance of the data transmission device.

[0051] In an embodiment, the data transmission device is provided with a plurality of indicator lights embedded on the shell, which are used to display the running state of the data transmission device, so that the user can intuitively understand the running state of the data transmission device, and the data transmission device can provide a basis for fault detection when a fault occurs.

[0052] Specifically, the data transmission device is provided with five indicator lights, which are arranged on opposite two surfaces of the shell according to their corresponding functions. Among them, two indicator lights are arranged on one surface of the shell, which respectively display the power-on state and the wifi connection state of the data transmission device, and three indicator lights are arranged on the opposite surface, which are used to display the networking state of the data transmission device.

[0053] Of course, the number of indicator lights can be configured according to actual use requirements, and the configuration of five indicator lights is only one specific embodiment of the present application, and does not limit the specific number and function of the indicator lights.

[0054] According to another embodiment of the present application, a UAV is provided, which comprises the data transmission device of any of the above embodiments.

[0055] In this embodiment, the application of the data transmission device of the present application to the UAV is only one specific embodiment, and the data transmission device of the present application can be applied to any device with data transmission requirements.

[0056] The innovative technical solution and interface design of the data transmission device of the present application, high-reliability RF PCB design and whole-machine EMC design, multiple interface conversion compatible design, not only realize smaller size, but also improve transmission rate and distance, and can realize multiple networking modes, have stronger anti-interference ability, and at the same time, rich and perfect communication interface can simultaneously access multiple data acquisition and serial port devices, greatly expand the application range of the data link, improve the practicality, applicability and stability of the data transmission device, and also simplify the difficulty of system integration design.

[0057] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A data transmission apparatus characterized by comprising: The data transmission device comprises an antenna module, an interface module, a wireless baseband module and a routing switching module. The antenna module is a multi-antenna structure to realize multi-antenna sending and receiving of data. The wireless baseband module adopts orthogonal frequency division multiplexing technology to improve spectral efficiency. The wireless baseband module is configured to dynamically allocate bandwidth and support multi-band data transmission. The routing switching module is configured with multiple internal interfaces to enable simultaneous data transmission between multiple devices. The interface module is integrated with multiple external interfaces, and the multiple internal interfaces are respectively connected to the corresponding external interfaces.

2. The data transmission device of claim 1, wherein The routing switching module comprises a wifi unit, a router unit and a USB unit.

3. The data transmission apparatus according to claim 1, wherein The wifi unit is used for wireless data transmission.

4. The data transmission apparatus of claim 1, wherein The router unit is configured with multiple Ethernet RJ45 interfaces.

5. The data transmission apparatus of claim 1, wherein The USB unit is used to expand multiple serial interfaces.

6. The data transmission apparatus of claim 1, wherein The data transmission device further comprises a radio frequency power amplification module for gain amplification of radio frequency signals to ensure the stability of long-distance data transmission.

7. The data transmission apparatus of claim 1, wherein The wireless baseband module is configured to automatically hop across frequency bands based on the data transmission environment to improve the anti-interference ability of data transmission.

8. The data transmission apparatus of claim 1, wherein The wireless baseband module and the routing switching module are arranged in a stacked manner to share multiple internal interfaces.

9. The data transmission apparatus of claim 1, wherein The wireless baseband module adopts a flat system architecture to reduce the number of levels in the system architecture, thereby reducing the data transmission path and simplifying the data processing complexity.

10. A drone, characterized in that, The wireless baseband module is configured to configure corresponding resources and priorities based on data types to reduce the delay of high-priority data in end-to-end transmission. The wireless baseband module is configured to configure different networking modes based on the transmission requirements of data. The data transmission device comprises a shell made of aluminum oxide alloy to improve the heat dissipation and shielding effect of the data transmission device. The data transmission device comprises the data transmission device of any one of claims 1-9.

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