CN203608304U - Unmanned plane ultralow time-delay digital high-definition image emission module - Google Patents
Unmanned plane ultralow time-delay digital high-definition image emission module Download PDFInfo
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- CN203608304U CN203608304U CN201320755242.2U CN201320755242U CN203608304U CN 203608304 U CN203608304 U CN 203608304U CN 201320755242 U CN201320755242 U CN 201320755242U CN 203608304 U CN203608304 U CN 203608304U
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Abstract
本实用新型提出了一种无人机超低延时数字高清图像发射模块，包括用于接收摄像设备信号且产生并行视频电流的H.264编码板、用于产生射频信号且与H.264编码板连接的COFDM调制板、用于放大射频信号且与COFDM调制板连接的高线性功率放大器、用于发射信号且与高线性功率放大器连接的发射天线。解决了通信距离受到基站分布的限制，在荒郊或自然灾害严重的地区基本无法使用。同时使用了H.264编码板和COFDM调制板进行信号的处理，因此，单兵作战无线图像传输系统传输图像清晰度高、传输延时小、抗干扰能力强、体积重量小、使用方便。
The utility model proposes a UAV ultra-low-latency digital high-definition image transmission module, including an H.264 encoding board for receiving camera equipment signals and generating parallel video currents, for generating radio frequency signals and encoding with H.264 A COFDM modulation board connected to the board, a high linear power amplifier for amplifying radio frequency signals and connected with the COFDM modulation board, and a transmitting antenna for transmitting signals and connected with the high linear power amplifier. The communication distance is limited by the distribution of base stations, and it is basically unusable in the wilderness or areas with severe natural disasters. At the same time, the H.264 encoding board and COFDM modulation board are used for signal processing. Therefore, the individual combat wireless image transmission system has high image definition, small transmission delay, strong anti-interference ability, small volume and weight, and is easy to use.
Description
Technical field
The utility model relates to communication technical field, refers to especially the ultralow time delay digital high-definition of a kind of unmanned plane image emissions module.
Background technology
Unmanned plane IMAQ generally has two kinds of modes to process the view data gathering both at home and abroad at present, and the one, utilize the video camera with memory function, after unmanned plane landing, manually the data in video camera are copied to computer and are further processed; The 2nd, by wireless way for transmitting, to ground receiving wastewater facility, still, in a very long time, wireless transmission method is subject to the impact of the factors such as transmission bandwidth, time delay, air ambient, electromagnetic interference, fails advanced widely and apply in the past.
Along with the rise of various wireless communication technologys, so that its use is flexible, easy to operate etc., significant advantage is widely used wireless video transmission in unmanned plane equipment.Existing wireless image transmission technology has analog image transmission and two kinds of modes of Digital Image Transmission, the transmission technology of wherein simulating because of its poor image quality, affected seriously by weather and electromagnetic environment to be substituted by digital form gradually.
The technology that Digital Image Transmission mode relates to comprises video compression coding, modulation frequency conversion.The video coding technique that current market product uses mainly contains MPEG2/4, H.261/263 etc., the resolution of its standard P AL/NTSC standard is not less than 720*576, average code stream is 10Mbps, and mostly these equipment are to realize transfer of data by wireless communication technologys such as TD-SCDMA/WCDMA/GPRS, but the transmission rate of these technology is generally lower than 3Mbps, limit the lifting of video resolution, image quality has not reached the requirement of current people to wireless image transmission, and its communication distance is subject to the restriction of base station distribution, in wilderness or the serious area of natural calamity substantially cannot use.
Utility model content
The purpose of this utility model is to provide one and has that image definition is high, transmission delay is little, antijamming capability is strong, the ultralow time delay digital high-definition of the unmanned plane image emissions module that volume weight is little.
To achieve these goals, the utility model has adopted following technical scheme: the ultralow time delay digital high-definition of a kind of unmanned plane image emissions module, comprise for receive picture pick-up device signal and produce the H.264 encoding board of parallel video electric current, for generation of radiofrequency signal and with COFDM modulation panel that H.264 encoding board is connected, for the high linear power amplifier that amplifies radiofrequency signal and be connected with COFDM modulation panel, transmitting antenna for transmitting and being connected with high linear power amplifier.
Further, described H.264 encoding board is provided with Encoder main coding chip.
Further, described COFDM modulation panel be provided with FPGA processor, the DAC analog to digital conversion circuit being connected with FPGA processor, the PLL/VCO circuit being connected with DAC analog to digital conversion circuit.
Further, the lid that also comprises module cavity and coordinate with module cavity, described H.264 encoding board, COFDM modulation panel and high linear power amplifier are integrated in one and are located in module cavity.
Further, described H.264 encoding board is provided with the double contact pin of PCB, and described COFDM modulation panel is provided with the PCB double socket in mating connection with the double contact pin of PCB.
Further, on described module cavity, be also provided with SMA antenna stand, HDMI stand, two core power sockets, U-shaped holder.
Further, between described high linear power amplifier and transmitting antenna, pass through SMA antenna pedestal sub-connection.
The beneficial effects of the utility model are: adopt after said structure, each system module is integrated in one and is located on unmanned plane, make this trunk module flexibility high, solved communication distance and be subject to the restriction of base station distribution, in wilderness or natural calamity serious area substantially cannot use.Used H.264 encoding board and COFDM modulation panel to carry out the processing of signal, therefore, individual combat Wireless Image Transmission Systems transmitting image definition is high, transmission delay is little, antijamming capability is strong, volume weight is little, easy to use simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment technical scheme, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only that the utility model is in order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is stereogram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The ultralow time delay digital high-definition of a kind of unmanned plane image emissions module as shown in Figure 1, comprise for receive picture pick-up device signal and produce the H.264 encoding board 12 of parallel video electric current, for generation of radiofrequency signal and with COFDM modulation panel 11 that H.264 encoding board 12 is connected, for the high linear power amplifier 13 that amplifies radiofrequency signal and be connected with COFDM modulation panel 11, transmitting antenna 9 for transmitting and being connected with high linear power amplifier 13.
Wherein, be H.264 the common new-generation digital video compression format continue MPEG4 after proposing of International Organization for Standardization and International Telecommunication Union, be ITU-T take one of serial video coding and decoding technology standard as name nominating H.26x.Compared with other existing video encoding standard, H.264 more outstanding image quality is provided under identical bandwidth, can support to be up to the high definition resolution of 1920*1080.Particularly, H.264 encoding board 12 is provided with Encoder main coding chip, receives the signal from high-definition camera equipment, then enter Encoder main coding chip by HDMIReceiver interface, produce two-way parallel video stream signal TS0 and TS1, MCU is used for configuring main coding chip.
Wherein, COFDM modulation, i.e. the abbreviation of Coded Orthogonal Frequency Division Multiplexing (COFDM), is the most advanced and the most potential modulation technique in the current world.Its core competence is the ability that has remarkable diffraction and penetrate shelter, the multipath that is highly resistant to wireless signal disturbs, and be supported in the wireless transmission that (is greater than 150km/h) in high-speed motion, there is video definition high, transmission delay is little, and antijamming capability is strong, high reliability, particularly, described COFDM modulation panel 11 be provided with FPGA processor, the DAC analog to digital conversion circuit being connected with FPGA processor, the PLL/VCO circuit being connected with DAC analog to digital conversion circuit.H.264 encoding board 12 produces two-path video stream signal TS0 and TS1 are connected to COFDM modulation panel 11 by the double contact pin 8 of PCB, the double socket 7 of PCB, FPGA processor produces digital baseband signal after this signal is processed, produce orthogonal I, the Q signal of two-way through DAC analog to digital conversion circuit again, PLL/VCO circuit produces a radio-frequency (RF) local oscillator signal simultaneously, enter modulator Modulator with above-mentioned I, Q orthogonal signalling simultaneously, produce the required radiofrequency signal of this transmitter module, finally by crossing programmable attenuator Attenuator, to control power output size.
Further, the lid 6 that also comprises module cavity 5 and coordinate with module cavity 5, described H.264 encoding board 12, COFDM modulation panel 11 and high linear power amplifier 13 are integrated in one and are located in module cavity 5.Each like this module integration one is located in module cavity 5, makes transmitter module smaller volume, compact conformation.Module cavity 5 and lid 6, as the installation carrier of circuit module and interface, play the effect of shielded signal and heat radiation simultaneously simultaneously.
Further, described H.264 encoding board 12 is provided with the double contact pin 8 of PCB, and described COFDM modulation panel 11 is provided with the PCB double socket 7 in mating connection with the double contact pin 8 of PCB.
As shown in Figure 2, on described module cavity 5, be also provided with SMA antenna stand 1, HDMI stand 2, two core power sockets 3, U-shaped holder 4.Between high linear power amplifier 13 and transmitting antenna 9, be connected by SMA antenna stand 1, HDMI stand 2 is for connecting high-definition camera equipment, two core power sockets 3 are for giving the power supply of this transmitter module, and U-shaped holder 4 is for being fixed on this transmitter module in unmanned plane carrier.
Described high linear power amplifier 13 receives the radiofrequency signal producing from COFDM modulation panel 11, and by obtaining the transmitting power needing after prime amplifier PreAmplifier, driving amplifier Driver, power amplifier PWRAmplifier, be finally connected to transmitting antenna 9 by SMA antenna stand 1 and launch.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. the ultralow time delay digital high-definition of a unmanned plane image emissions module, is characterized in that: comprise for receive picture pick-up device signal and produce the H.264 encoding board (12) of parallel video electric current, for generation of radiofrequency signal and with COFDM modulation panel (11) that H.264 encoding board (12) is connected, for the high linear power amplifier (13) that amplifies radiofrequency signal and be connected with COFDM modulation panel (11), transmitting antenna (9) for transmitting and being connected with high linear power amplifier (13).
2. the ultralow time delay digital high-definition of unmanned plane according to claim 1 image emissions module, is characterized in that: described H.264 encoding board (12) is provided with Encoder main coding chip.
3. the ultralow time delay digital high-definition of unmanned plane according to claim 1 image emissions module, is characterized in that: described COFDM modulation panel (11) is provided with FPGA processor, the DAC analog to digital conversion circuit being connected with FPGA processor, the PLL/VCO circuit being connected with DAC analog to digital conversion circuit.
4. the ultralow time delay digital high-definition of unmanned plane according to claim 1 image emissions module, it is characterized in that: the lid (6) that also comprises module cavity (5) and coordinate with module cavity (5), described H.264 encoding board (12), COFDM modulation panel (11) and high linear power amplifier (13) are integrated in one and are located in module cavity (5).
5. the ultralow time delay digital high-definition of unmanned plane according to claim 1 image emissions module, it is characterized in that: described H.264 encoding board (12) is provided with the double contact pin of PCB (8), described COFDM modulation panel (11) is provided with the PCB double socket (7) in mating connection with the double contact pin of PCB (8).
6. the ultralow time delay digital high-definition of unmanned plane according to claim 4 image emissions module, is characterized in that: on described module cavity (5), be also provided with SMA antenna stand (1), HDMI stand (2), two core power sockets (3), U-shaped holder (4).
7. the ultralow time delay digital high-definition of unmanned plane according to claim 6 image emissions module, is characterized in that: between described high linear power amplifier (13) and transmitting antenna (9), be connected by SMA antenna stand (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755242.2U CN203608304U (en) | 2013-11-25 | 2013-11-25 | Unmanned plane ultralow time-delay digital high-definition image emission module |
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| CN201320755242.2U CN203608304U (en) | 2013-11-25 | 2013-11-25 | Unmanned plane ultralow time-delay digital high-definition image emission module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11368002B2 (en) | 2016-11-22 | 2022-06-21 | Hydro-Quebec | Unmanned aerial vehicle for monitoring an electrical line |
| US12097956B2 (en) | 2021-04-30 | 2024-09-24 | Hydro-Quebec | Drone with tool positioning system |
-
2013
- 2013-11-25 CN CN201320755242.2U patent/CN203608304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11368002B2 (en) | 2016-11-22 | 2022-06-21 | Hydro-Quebec | Unmanned aerial vehicle for monitoring an electrical line |
| US12097956B2 (en) | 2021-04-30 | 2024-09-24 | Hydro-Quebec | Drone with tool positioning system |
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| CF01 | Termination of patent right due to non-payment of annual fee |