CN205142193U - Airborne medium radio frequency data terminal - Google Patents

Abstract

The utility model discloses a radio frequency data terminal in machine carries, this data terminal includes: the radio frequency transceiving module is used for performing transceiving of a main link, transceiving of an auxiliary link and frequency agile receiving of the main/auxiliary link; the baseband processing module is used for framing, framing and transmitting video stream with the DSP; the image processing module is used for receiving the video code stream and compressing the video code stream; the clock management module is used for providing power for the radio frequency transceiving module, the baseband processing module, the image processing module and the clock management module. The embodiment of the utility model provides an in, integrated baseband processing, well radio frequency modulation and up-down conversion function simultaneously on a circuit board, improved the equipment integration level, reduced weight, volume and the consumption of equipment.

Description

A kind of airborne middle rf data terminal

Technical field

The application relates to communication technical field, particularly relates to a kind of airborne middle rf data terminal.

Background technology

Unmanned Aerial Vehicle Data terminal is as the important component part of unmanned plane inspection system, and set up communication link between earth command station, except the remote-control romote-sensing realized unmanned plane, track and localization and data information transfer function, real time monitoring and record are carried out to state of flight and mission bit stream simultaneously.Its transmission rate determines unmanned plane and performs the ageing of line walking task; Antijamming capability determines the fail safe of unmanned plane self and the reliability of line walking information; Interface compatibility ability determines the autgmentability of unmanned plane line walking task.

Existing Unmanned Aerial Vehicle Data terminal is mostly by power panel, baseband board, IF board, rf board is formed, remote measurement and picture signal are first via after the process of baseband board framing, deliver to IF board to encode, modulation, finally enter frequency conversion and the transmitting of rf board settling signal, remote signal is then introduced into rf board and down-converts to intermediate-freuqncy signal, then send into IF board and carry out demodulation, decoding, finally deliver to baseband board to carry out tearing frame and distribution open, current Unmanned Aerial Vehicle Data terminal volume and power consumption higher, and transmission rate is mostly 2M/4M/8M, interface is mostly serial ports, SMA, YPbPr, the requirement of multiple-task load for transmission rate and interface type cannot be met.

Utility model content

The utility model embodiment provides a kind of airborne middle rf data terminal, higher in order to solve current Unmanned Aerial Vehicle Data terminal volume and power consumption in prior art, and transmission rate is mostly 2M/4M/8M, interface is mostly serial ports, SMA, YPbPr, cannot meet the problem of multiple-task load for the requirement of transmission rate and interface type.

Its concrete technical scheme is as follows:

A kind of airborne middle rf data terminal, described data terminal comprises:

Radio-frequency (RF) receiving and transmission module, receives for carrying out primary link transmitting-receiving, secondary link transmit-receive and master/slave link frequency agility;

Baseband processing module, for framing, framing and and DSP between transmitting video-frequency flow;

Image processing module, for receiver, video code stream, and carries out compression process to video code flow;

Clock management module, for providing work clock for described radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module;

Power module, for providing power supply for described radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module.

Optionally, described radio-frequency (RF) receiving and transmission module comprises 3 zero-intermediate-frequency architecture victories and becomes transceiver, in the binary channels that the victory of described zero-intermediate-frequency architecture becomes transceiver, master/slave link and receipts/a send out link to be staggered settings, and using a slice independently zero-intermediate-frequency architecture prompt change transceiver receive as primary link.

Optionally, described zero-intermediate-frequency architecture victory becomes transceiver and has independently receive path and transmission channel, supports TDD mode and mode of frequency division duplexing.

Optionally, the coaxial radio-frequency interface in described radio-frequency (RF) receiving and transmission module is by the staggered layout of two rows.

Optionally, described radio-frequency (RF) receiving and transmission module also comprises ground shield, carries out shielding protection for becoming transceiver to described zero-intermediate-frequency architecture victory.

Optionally, described Clock management module, specifically for the 40M clock of input is exported to radio-frequency (RF) receiving and transmission module and baseband processing module through the clock distributor of 1 point 6, and clock is produced the clock of clock as image processing module of each frequency that device produces respectively.

Optionally, described data terminal also comprises:

The data monitored for the voltage of module each in monitor data terminal, electric current and temperature, and are sent to baseband processing module by monitoring module.

Optionally, described data terminal also comprises:

Interfacing expansion module, by general micro-rectangular connector and each model calling, and for other interfaces compatible.

The utility model embodiment provides a kind of airborne middle video data terminal, this data terminal comprises: radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module, power module, and radio-frequency (RF) receiving and transmission module is used for carrying out primary link transmitting-receiving, secondary link transmit-receive and master/slave link frequency agility and receives; Baseband processing module be used for framing, framing and and DSP between transmitting video-frequency flow; Image processing module is used for receiver, video code stream, and carries out compression process to video code flow; Clock management module is used for providing power supply for radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module.In the utility model embodiment, one piece of circuit board is integrated with Base-Band Processing, middle rf modulations and Up/Down Conversion function simultaneously, improves device integration, reduce the weight of equipment, volume and power consumption.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of airborne middle video data terminal in the utility model embodiment;

Fig. 2 is the schematic diagram that in the utility model embodiment, power module is powered;

Fig. 3 is the flow chart of a kind of airborne middle radio frequency data processing method in the utility model embodiment.

Embodiment

Higher in order to solve current Unmanned Aerial Vehicle Data terminal volume and power consumption in prior art, and transmission rate is mostly 2M/4M/8M, interface is mostly serial ports, SMA, YPbPr, the problem of multiple-task load for the requirement of transmission rate and interface type cannot be met, the utility model embodiment provides a kind of airborne middle video data terminal, this data terminal comprises: radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module, power module, radio-frequency (RF) receiving and transmission module is used for carrying out primary link transmitting-receiving, secondary link transmit-receive and master/slave link frequency agility receive, baseband processing module be used for framing, framing and and DSP between transmitting video-frequency flow, image processing module is used for receiver, video code stream, and carries out compression process to video code flow, Clock management module is used for providing power supply for radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module.In the utility model embodiment, one piece of circuit board is integrated with Base-Band Processing, middle rf modulations and Up/Down Conversion function simultaneously, improves device integration, reduce the weight of equipment, volume and power consumption.

Below by accompanying drawing and specific embodiment, technical solutions of the utility model are described in detail, be to be understood that, the explanation of concrete technical characteristic in the utility model embodiment and embodiment just to technical solutions of the utility model, instead of limit, when not conflicting, the concrete technical characteristic in the utility model embodiment and embodiment can combine mutually.

Be illustrated in figure 1 the structural representation of a kind of airborne middle rf data terminal in the utility model embodiment, this data terminal comprises:

Radio-frequency (RF) receiving and transmission module 101, receives for carrying out primary link transmitting-receiving, secondary link transmit-receive and master/slave link frequency agility;

Baseband processing module 102, for framing, framing and and DSP between transmitting video-frequency flow;

Image processing module 103, for receiver, video code stream, and carries out compression process to video code flow;

Clock management module 104, for providing work clock for radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module;

Power module 105, for providing power supply for radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module.

Specifically, in the utility model embodiment, radio-frequency (RF) receiving and transmission module 101 transmits for receiving baseband processing module 102 the base band data of coming, and base band data is carried out frequency conversion and transmitting, this radio-frequency (RF) receiving and transmission module 101 have employed 3 zero-intermediate-frequency architecture victories and becomes transceiver AD9361, this victory becomes the radio-frequency (RF) transceiver that transceiver is integrated with the 2*2 of 12 ADC and DAC, and every a slice victory becomes transceiver and has independently receive path and transmission channel.The prompt working frequency range becoming transceiver is generally between 70MHz to 6GHz, and support TDD mode and mode of frequency division duplexing, primary link transmitting-receiving, secondary link transmit-receive and the victory of master/slave link can be carried out simultaneously and become reception work, two independently RADIO FREQUENCY SYNTHESIZER are integrated with because victory becomes transceiver, one for receiver, that is: receives phase-locked loop; Another is for reflector, that is: receive phase-locked loop.The radiofrequency signal of different frequency so the receive path of prompt change transceiver and transmission channel can be sampled, and victory is become to receive path and the transmission channel of transceiver, two autonomous channels wherein use same local oscillator all the time, so a victory becomes the signal that transceiver can adopt same frequency.The utility model adopts frequency agility transceiver directly baseband signal to be converted into radiofrequency signal and exports, frequency coverage UHF is to low C frequency range, support the transmission rate of maximum 64M, the operating frequency demand of most UAS can be met, and circuit level is high, baseband board, IF board and channel plate are synthesized rf board in a piece, compared with traditional data terminal, while minimizing volume, power consumption and weight, improve downlink transmission rate, meet the demand of more line walking tasks.

Further, due to the narrow space of circuit board, width is generally at 103mm, prompt change transceiver size is 10mm × 10mm, and all external interfaces are all positioned at the same side of plank, in order to reduce the interference between adjacency channel, increase Signal segregation degree, in the binary channels that victory becomes transceiver, master/slave link and a receipts/link are staggered, and the primary link of most critical receives exclusive a slice victory becomes transceiver, ensure the reliability in unmanned plane during flying process to greatest extent, such puts the isolation sequentially added between primary link and secondary link, reduces signal disturbing.

In addition, can also increase the distance between interference source, when sacrificing longitudinal space, coaxial radio-frequency interface is by the staggered layout of two rows.

Further, in the utility model embodiment, can also increase ground shield, carry out grounding near each radio frequency cabling, ground level is introduced in interference, each victory becomes transceiver and installs metallic shield additional.So just further can reduce outside interference.

Further, in the utility model embodiment, radio-frequency (RF) receiving and transmission module 101 can carry out transfer of data by choice for use full-duplex mode, and victory is become transceiver into one one receipts double data rate, register configuration is: 0x010=0x08; 0x011=0x00; 0x12=0x10.

Image processing module 103 choice for use XC7K325T is as master signal, complete framing, framing function, and the video streaming be responsible between DSP, also for configuring SD video capture processor, field programmable gate array is (English: Field-ProgrammableGateArray, be called for short: FPGA) adopt SPI serial configuration, FPGA configuring chip type is SPIflash, and model is: M25P128, the highest 54MHz of speed, capacity 128Mb.FPGA powers up setup time, can be controlled, the highest 50MHz by the loading clock rate of SPI.

Image processing module 103, the image that the transmission of this image processing module 103 receiving interface expansion module 107 comes, and image Compression is carried out to the image received, then the image after compression is sent to baseband processing module 102 and processes.This image processing module 103 adopts TMS320DM368 as video compression chip, video input interface be 1 tunnel Composite Video Baseband Signal CVBS, adopt video AD chip ADV7180, support CVBS, Y/C, YPbPr video.DM368 peripheral hardware comprises DDR2, NANDFLASH, Ethernet chip, and DDR2 selects MT47H64M16NF-25EXIT:M, data-interface 16bit, 8M memory cell, totally 8 bank, memory capacity is 128Mbyte, clock cycle is 2.5ns, frequency 400MHz, and data rate is 800M.NANDFLASH selects MT29F4G16ABADAWP-IT, and memory capacity is 512MByte, data-interface 16bit.Ethernet chip selects KSZ8001LI, and this chip is physical layer interface, supports 10/100Mbps speed and complete/semiduplex mode.DDR chip connects the DDREMIF interface of DM368, and NANDFLASH connects the AEMIF interface of DM368, and meanwhile, FPGA is also connected with the AEMIF interface of DM368, at FPGA internal configurations FIFO or RAM, can receive the H.264 code stream that DM368 produces.

Clock module 104, adopts 40MTXCO crystal oscillator WTX-705A to provide work clock for each chip of whole plate.GTX module due to the fpga chip of responsible high-speed serial communication needs external difference clock to input, therefore have employed the 530EC125M000DGR of SILICONLABS company, in order to ensure whole plate clock synchronous, the 40M clock of input is exported to three AD9361, two panels FPGA and next stage and is frequently combined AD9577 after the clock distributor NB3H83905C of 1 point 6, and this clock generator produces the work clock of clock as DSP, network interface chip and Video Decoder ADV7180 of 24MHz, 25MHz, 28.6363MHz respectively.The power unit of crystal oscillator adopts Pi type filter circuit, carries out filtering to electric power network; Prevent the noise of external power source network from causing interference to crystal oscillator output frequency signal; Meanwhile, also prevent crystal oscillator acting in opposition in electric power network.Meanwhile, the output serial connection impedance matching resistor of crystal oscillator WTX-705AE57C3.340MHz.

The power supply that power module 105 provides for receiving outside, and be converted into that corresponding magnitude of voltage is image processing module, baseband processing module, radio-frequency (RF) receiving and transmission module, Clock management module and monitoring module provide power supply to supply.Concrete voltage conversion value as shown in Figure 1.

Further, in the utility model embodiment, this data terminal also comprises:

Monitoring mould 106: the monitoring comprising voltage, electric current, temperature, namely monitors video receiving module 101, baseband processing module 102, image processing module 103, Clock management module 104.Wherein the monitoring of voltage and temperature has been come by ADM1063,10 road information of voltage, 2 road temperature informations can be monitored at most, the SMBus interface that can also be carried by chip, the control of voltage sequential has been configured by MCU, the monitoring of electric current is realized by MAX9938, and these monitor messages finally all transfer to master control FPGA by MCUC8051F550.The utility model adopts master/slave link backup communication system, and has master/slave Link State Real-Time Monitoring, frequency Interference Detection and frequency agility function, improves the reliability of equipment.

Further, in the utility model embodiment, this data terminal also comprises:

Interfacing expansion module 107: be connected with other modules by general micro-rectangular connector, interfacing expansion module 107 is for receiving image, and by image transmitting to image processing module 103, this interfacing expansion module 107 also will receive remote measuring and controlling signal, and this remote measuring and controlling signal is sent to baseband processing module 102 will process.This interfacing expansion module 107 comprises the interface chip of the multiple interfaces such as SDI, LVDS, cameralink, Ethernet, CAN, RAPIDIO, if need other interfaces compatible, realizes by the interfacing expansion module more renewed.The utility model can the multiple interfaces such as compatible to SD I, LVDS, cameralink, Ethernet, CAN, RAPIDIO, and by changing interfacing expansion module compatibility other interfaces more, adapt to more how different interfaces by only changing interface module simultaneously, improve compatibility and the extensibility of system, the demand with multiple-task load collocation operation can be met.

Further, in the utility model embodiment, additionally provide a kind of airborne middle radio frequency data processing method, be illustrated in figure 3 the flow chart of a kind of airborne middle radio frequency data processing method in the utility model embodiment, the method comprises:

S301, receives view data by interfacing expansion module;

S302, carries out compression process by image processing module to the view data received, and obtains the view data after compressing;

S303, carries out conversion processing by baseband processing module to the image graph picture after compression, obtains base band data;

S304, is sent to designated equipment by radio-frequency (RF) receiving and transmission module by described base band data.

Specifically, in the utility model embodiment, the method is applied in an airborne middle rf data terminal, and this airborne middle rf data terminal at least comprises: radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module and power module.

When this airborne middle rf data terminal operating, this airborne middle rf data terminal receives view data by interfacing expansion module, then by image processing module, compression process is carried out to the view data received, obtain the view data after compressing, by baseband processing module, conversion processing is carried out to the image graph picture after compression, obtain base band data, finally by radio-frequency (RF) receiving and transmission module, described base band data is sent to designated equipment.

Further, in the utility model embodiment, by the independent primary link in radio-frequency (RF) receiving and transmission module, base band data can be sent to designated equipment.

Further, in the utility model embodiment, this airborne middle rf data terminal for described interfacing expansion module, image processing module, baseband processing module and radio-frequency (RF) receiving and transmission module provide clock information, keeps clock synchronous to make described interfacing expansion module, image processing module, baseband processing module and radio-frequency (RF) receiving and transmission module by clock module.

Further, in the utility model embodiment, the voltage of interfacing expansion module, image processing module, baseband processing module and radio-frequency (RF) receiving and transmission module, electric current and temperature is obtained by monitoring module, and the data monitored are sent to baseband processing module, with the running status making described baseband processing module know other modules.Can process timely like this and occur abnormal module.

Although described the preferred embodiment of the application, one of ordinary skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.

Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.

Claims (8)

1. an airborne middle rf data terminal, it is characterized in that, described data terminal comprises:

Radio-frequency (RF) receiving and transmission module, receives for carrying out primary link transmitting-receiving, secondary link transmit-receive and master/slave link frequency agility;

Baseband processing module, for framing, framing and and DSP between transmitting video-frequency flow;

Image processing module, for receiver, video code stream, and carries out compression process to video code flow;

Clock management module, for providing work clock for described radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module;

Power module, for providing power supply for described radio-frequency (RF) receiving and transmission module, baseband processing module, image processing module, Clock management module.

2. data terminal as claimed in claim 1, it is characterized in that, described radio-frequency (RF) receiving and transmission module comprises 3 zero-intermediate-frequency architecture victories and becomes transceiver, in the binary channels that the victory of described zero-intermediate-frequency architecture becomes transceiver, master/slave link and receipts/a send out link to be staggered settings, and using a slice independently zero-intermediate-frequency architecture prompt change transceiver receive as primary link.

3. data terminal as claimed in claim 2, is characterized in that, described zero-intermediate-frequency architecture victory becomes transceiver and has independently receive path and transmission channel, supports TDD mode and mode of frequency division duplexing.

4. data terminal as claimed in claim 1, is characterized in that, the coaxial radio-frequency interface in described radio-frequency (RF) receiving and transmission module is by the staggered layout of two rows.

5. data terminal as claimed in claim 2, it is characterized in that, described radio-frequency (RF) receiving and transmission module also comprises ground shield, carries out shielding protection for becoming transceiver to described zero-intermediate-frequency architecture victory.

6. data terminal as claimed in claim 1, it is characterized in that, described Clock management module, specifically for the 40M clock of input is exported to radio-frequency (RF) receiving and transmission module and baseband processing module through the clock distributor of 1 point 6, and clock is produced the clock of clock as image processing module of each frequency that device produces respectively.

7. data terminal as claimed in claim 1, it is characterized in that, described data terminal also comprises:

The data monitored for the voltage of module each in monitor data terminal, electric current and temperature, and are sent to baseband processing module by monitoring module.

8. data terminal as claimed in claim 1, it is characterized in that, described data terminal also comprises:

Interfacing expansion module, by general micro-rectangular connector and each model calling, and for other interfaces compatible.