CN208400324U - A kind of airborne aviation management data set in CNI identification - Google Patents

Abstract

The utility model discloses the airborne aviation management data set in a kind of CNI identification, the aviation management system regions being related in aviation, the airborne aviation management data acquisition device includes cabin inside and outside video acquisition unit and cabin inside and outside audio-frequency information acquisition unit, cabin inside and outside video acquisition unit includes camera, the video synchronization signal separating chips being connect with camera, the high-speed a/d converter being connect with camera, the FIFO memory being connect with A/D converter, the data buffering chip being connect with FIFO memory, further include respectively with video separation chip, the processor that FIFO memory is connected with data buffer chip, the A/D converter, FIFO memory is connected with buffer chip same has source crystal oscillator, the crystal oscillator movement is conversion and the clock source read and write.The utility model solves the problems, such as that the video acquisition part in existing aviation management modular circuit is not suitable for the aviation management module in aircraft.

Description

A kind of airborne aviation management data set in CNI identification

Technical field

The utility model relates to the aviation management system regions in aviation more particularly to the airborne aviation management numbers in a kind of CNI identification According to device.

Background technique

CNI means that communication and navigation identifies.Aviation management means aviation management.Since the growth of air traffic amount is quick (about annual growth 10%), current flight management system can not do efficient traffic administration, and civil aviation has occurred successively The problems such as airplane crash of aircraft lost contact, air strike are hijacked a plane, further strengthens the concern that flight safety navigation management causes people.Existing boat Empty control system is to be lived using ground secondary radar and airborne answering machine cooperating by radio communication, to aircraft flight It is dynamic to be monitored and controlled, to guarantee to fly orderlyly.It is existing to be passed from theoretical degree based on aviation management system Basic parameter, flight condition parameter, cabin inside and outside video image, the cabin inside and outside audio-frequency information of defeated aircraft flight situation Deng.In all parameter acquisitions, the acquisition signal of video image is maximum.Currently, video image acquisition method both domestic and external is very It is more, it is divided into two major classes substantially: auto Image Collection and processor-based Image Acquisition.Auto Image Collection mostly uses special Video decoding chip, such as SAA7113, TVP5150 etc. are automatically performed analog-to-digital conversion, and export row, field signal to realize memory Address generates, and generally using DSP as primary processor, other than carrying out Initialize installation to acquisition mode, primary processor, which is not involved in, to be adopted The advantages of collection process, this method is the time that acquisition is not take up CPU, and real-time is preferable, is suitable for the precision to image data More demanding and algorithm complexity occasion, such as the application of lane identification, vehicle identification direction, but the program is to processor Speed has very high requirement, higher cost, and circuit complicated.Processor-based Image Acquisition is then using video synchronization signal point Off-chip piece generates row, field interrupt signal, and the acquisition of image, the acquisition of image are realized with the A/D converter of microprocessor internal The characteristics of journey is completed under CPU control, by CPU starting A/D conversion, obtains change data, the program is that circuit is simple, cost It is low, it is easy to accomplish, the needs of simple image acquisition system are able to satisfy, but data acquisition occupies the CPU time, acquire speed by micro- place Manage the limitation of device A/D transformation time.Both video capture methods are each beneficial, but are not all suitable for interior of aircraft.In fact, Although to be acquired to the video image of cabin inside and outside, the image of aircraft inside and outside is relative to common road information For, relatively simple, the especially image of aircraft exterior, within a very long time, external image is all cloud layer image, different In the lane identification of current traffic above-ground and the image of vehicle identification, and the aviation management module in aircraft should reduce resource as far as possible Waste, reduce complexity, therefore, while the video acquisition part in aviation management module has to meet high stability also not It can be excessively complicated.

Utility model content

The purpose of this utility model is that: it is shared to solve the video acquisition part discomfort in existing aviation management modular circuit In the aviation management module in aircraft the problem of, the utility model provides the airborne aviation management data set in a kind of CNI identification.

The technical solution of the utility model is as follows:

A kind of airborne aviation management data set in CNI identification, including secondary radar record answering machine, based on secondary radar and Record the flight parameter register instrument, airborne aviation management data acquisition device, decoder, letter based on wireless laser communication of answering machine Number receive demodulator, optical antenna, signal transmitting modulator, encoder and laser source, the airborne aviation management data acquisition device Including cabin inside and outside video acquisition unit and cabin inside and outside audio-frequency information acquisition unit, cabin inside and outside video acquisition Unit includes camera, connect with camera video synchronization signal separating chips, the high-speed a/d conversion being connect with camera Device, the FIFO memory being connect with A/D converter, the data buffering chip being connect with FIFO memory, further include respectively with view The processor that frequency separating chips, FIFO memory are connected with data buffer chip, the A/D converter, FIFO memory are gentle Rush that chip connection is same a source crystal oscillator, the crystal oscillator movement for conversion and read-write clock source.

Specifically, the Video Sync Separator Chip is LM1881 chip, and the HS interface and VS of the LM1881 chip connect Mouth connection processor.

Specifically, the A/D converter uses TLC5510 converter, and the D0-D7 interface of the TLC5510 converter connects Connect FIFO memory.

Specifically, the FIFO memory is uPD42280 memory, the Di0-Di7 interface of the uPD42280 memory A/D converter is connected, the Do0-Do7 interface of the uPD42280 memory connects the data buffering chip.

Specifically, the data buffering chip uses 74HCT245 chip, and the A0-A7 interface of the 74HCT245 chip connects Connect FIFO memory, the B0-B7 processor of interface connection of the 74HCT245 chip.

Specifically, the processor is MC9S12DGI28B chip, the PORTJ0 and PORTJ1 of MC9S12DGI28B chip Interface connects the Video Sync Separator Chip, the PORTK0-PORTK3 interface connection FIFO storage of MC9S12DGI28B chip Device, the PORTKB interfacing data buffer chip of MC9S12DGI28B chip.

The beneficial effects of the utility model are as follows:

(1) the utility model uses caching of the FIFO memory uPD42280 as video data, interruption service letter of being expert at It is carried out in number to write control, A/D change data is written in its memory, at the end of a field picture, interruption on the scene services letter Video data is read back by 8 I/O ports of single-chip microcontroller in number, in order to guarantee the stabilization of data, in single-chip microcontroller and FIFO memory Between added level-one 74HCT245, as data buffering, improve stability.

(2) simultaneously, in the utility model, other than carrying out Initialize installation to acquisition mode, primary processor, which is not involved in, to be adopted Collection process, improves speed.

(3) for guarantee acquisition synchronize, LC5510, uPD42280 and 74HCT245 using it is same have source crystal oscillator as conversion and The clock source of read-write further ensures the precision of the utility model data acquisition.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.By the way that shown in attached drawing, the above and other purpose, feature and advantage of the utility model will more Clearly.Identical appended drawing reference indicates identical part in all the attached drawings.Do not drawn by actual size equal proportion scaling deliberately Attached drawing processed, it is preferred that emphasis is show the purport of the utility model.

Fig. 1 is the cabin inside and outside video acquisition unit schematic diagram of the utility model；

Fig. 2 is the integral module figure of the utility model.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Airborne aviation management data set in a kind of CNI identification of the present embodiment, including secondary radar are recorded answering machine, are based on Secondary radar and the record flight parameter register instrument of answering machine, the airborne aviation management data based on wireless laser communication acquire dress It sets, decoder, signal receive demodulator, optical antenna, signal emit modulator, encoder and laser source, which is characterized in that institute Stating airborne aviation management data acquisition device includes cabin inside and outside video acquisition unit and cabin inside and outside audio-frequency information acquisition unit, Cabin inside and outside video acquisition unit includes camera, connect with camera video synchronization signal separating chips, with take the photograph The high-speed a/d converter connected as head, the FIFO memory connecting with A/D converter, the data that connect with FIFO memory are delayed Chip is rushed, further includes the processor being connect respectively with video separation chip, FIFO memory and data buffer chip, the A/D Converter, FIFO memory and buffer chip connect it is same have a source crystal oscillator, the crystal oscillator movement for conversion and read-write clock source.

The Video Sync Separator Chip is LM1881 chip, the HS interface and VS interface connection of the LM1881 chip Manage PORTJ0 the and PORTJ1 interface of device.The A/D converter uses TLC5510 converter, the TLC5510 converter D0-D7 interface connects FIFO memory, and the FIFO memory is uPD42280 memory, the uPD42280 memory Di0-Di7 interface connects A/D converter, and the Do0-Do7 interface of the uPD42280 memory connects the data buffering chip. Data buffering chip uses 74HCT245 chip, and the A0-A7 interface of the 74HCT245 chip connects FIFO memory, the institute State the B0-B7 processor of interface connection of 74HCT245 chip.Processor is MC9S12DGI28B chip, MC9S12DGI28B chip PORTJ0 with PORTJ1 interface connect the Video Sync Separator Chip, the PORTK0-PORTK3 of MC9S12DGI28B chip Interface connects FIFO memory, the PORTKB interfacing data buffer chip of MC9S12DGI28B chip.

The utility model is primarily adapted for use in the acquisition for meeting the simulation camera output vision signal of pal mode.It is general The main operational principle of simulation camera is: by certain resolution ratio, point in a manner of interleaved on sampled images, when sweeping Retouch certain point when, just by image sensor chip by the gradation conversion of image at the point at gray scale at one-to-one voltage Value, is then exported this voltage value by vision signal end.Meanwhile the output of vision signal end also implies field sync signal, row The information such as synchronization signal, odd even field sync signal, therefore reality output is composite video signal.

And originally practical use MC9S12DGl28B is as processor, for signal characteristic, firstly, same by special video Walk Signal separator chip LM1881 extract composite video signal horizontal synchronizing pulse, blanking pulse and field system chronizing impulse, and by it Be converted into straight connect of digital electric and be defeated by the middle fracture of single-chip microcontroller as control signal.High-speed a/d converter is used simultaneously TLC5510 carries out A/D conversion to vision signal, and the digital signal for making video voltage analog signal be converted to representative image gray scale is defeated Out.Then caching of the FIFO memory uPD42280 as video data is used, is expert to interrupt in service function and it is write Control, A/D change data is written in its memory.Finally, passing through list in interruption service function on the scene at the end of a field picture 8 I/O ports of piece machine read back video data.In order to guarantee the stabilization of data, one has been added between single-chip microcontroller and FIFO memory Grade 74HCT245, as data buffering.Specifically, LC5510, uPD42280 and 74HCT245 are using same to guarantee that acquisition synchronizes One has clock source of the source crystal oscillator as conversion and read-write.

For the whole device of the utility model, specific connection relationship is as shown in Fig. 2, the airborne response of secondary radar The effect of machine is to record the parameter for recording flight parameter recorder record based on secondary radar and answering machine, for example, aircraft is known Other code, basic flight parameter, basic flight parameter are such as the flying speed of aircraft, aircraft local environment temperature and air pressure, fly Oil level, engine behavior and record facility switching state etc., meanwhile, the flight parameter of answering machine is recorded based on radar Recorder is also connect with the airborne body aviation management data acquisition device based on wireless laser communication of the utility model emphasis description, base Collected data are sent to encoder, encoder and laser in the airborne body aviation management data acquisition device of wireless laser communication Connection signal emits modulator together in source, is modulated to the data after coding, is then emitted to ground by optical antenna Air management system, equally, for the data of the air management system transmitting on ground, optical antenna passes through signal after receiving data Receiver regulator is mediated, and then the data after conciliation are sent decoder by signal receiver regulator, and decoder again will letter It number is sent to wireless laser communication and records aviation management data acquisition device.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to It is any to belong to those skilled in the art within the technical scope disclosed by the utility model in this, the change that can be readily occurred in Change or replace, should be covered within the scope of the utility model.

Claims (6)

1. the airborne aviation management data set in a kind of CNI identification, including secondary radar is recorded answering machine, based on secondary radar and is answered Answer record the flight parameter register instrument, airborne aviation management data acquisition device, decoder, signal based on wireless laser communication of machine Receive demodulator, optical antenna, signal transmitting modulator, encoder and laser source, which is characterized in that the airborne aviation management data Acquisition device includes cabin inside and outside video acquisition unit and cabin inside and outside audio-frequency information acquisition unit, the cabin inside and outside Video acquisition unit includes camera, connect with camera video synchronization signal separating chips, the high speed being connect with camera A/D converter, the FIFO memory connecting with A/D converter, the data buffering chip connecting with FIFO memory, further include point The processor not connect with video separation chip, FIFO memory and data buffer chip, the A/D converter, FIFO storage Device connected with buffer chip it is same have a source crystal oscillator, the crystal oscillator movement for conversion and read-write clock source.

2. the airborne aviation management data set in a kind of CNI identification according to claim 1, which is characterized in that the video Sync Separator Chip is LM1881 chip, the HS interface and VS processor of interface connection of the LM1881 chip.

3. the airborne aviation management data set in a kind of CNI identification according to claim 1, which is characterized in that the A/D turns Parallel operation uses TLC5510 converter, and the D0-D7 interface of the TLC5510 converter connects FIFO memory.

4. the airborne aviation management data set in a kind of CNI identification according to claim 1, which is characterized in that the FIFO Memory is uPD42280 memory, and the Di0-Di7 interface of the uPD42280 memory connects A/D converter, described The Do0-Do7 interface of uPD42280 memory connects the data buffering chip.

5. the airborne aviation management data set in a kind of CNI identification according to claim 1, which is characterized in that the data Buffer chip uses 74HCT245 chip, and the A0-A7 interface of the 74HCT245 chip connects FIFO memory, described The B0-B7 processor of interface connection of 74HCT245 chip.

6. the airborne aviation management data set in a kind of CNI identification according to claim 1, which is characterized in that the processing Device is MC9S12DGI28B chip, PORTJ0 with the PORTJ1 interface of MC9S12DGI28B chip connects the videodataclus tearing The PORTK0-PORTK3 interface of chip, MC9S12DGI28B chip connects FIFO memory, MC9S12DGI28B chip PORTKB interfacing data buffer chip.