CN108495047A - A kind of unmanned aerial vehicle onboard digital camera control system and control method - Google Patents
A kind of unmanned aerial vehicle onboard digital camera control system and control method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
- B64D47/08—Arrangements of cameras
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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Abstract
The present invention relates to a kind of unmanned aerial vehicle onboard digital camera control system and its control methods, including camera control unit, airborne Transmit-Receive Unit, GPS receiver and digital camera.The system can carry different cameral producer, the digital camera of different model is taken photo by plane demand with meeting difference；The system comprises GPS receiver, for acquiring moment GPS information, cut out, splice and analyze convenient for the photo later stage；The system power supply establishes one's own system, and camera does not need battery, and there is no under low temperature the problem of battery work unreliable, the camera battery not enough power supply that works long hours；The system can extract real-time photograph as needed, unmanned plane can be met and shoot demand under high risk, adverse circumstances；The system further includes aperture, focal length, lens control in addition to traditional shutter control to digital camera control；In addition, the system can also monitor camera status parameter in real time.
Description
Technical field
The invention belongs to unmanned plane application field, it is related to the controls such as a kind of digital camera shutter, aperture, focal length, ISO, shines
Piece is read in real time, and camera status obtains online, the unmanned aerial vehicle onboard camera control of the information such as moment longitude and latitude, height above sea level addition
System and control method.
Background technology
Unmanned plane can be widely applied to national ecological environmental protection, mineral resources exploration, marine environmental monitoring, soil
Utilize investigation, water resources development, crop growth monitoring and the yield by estimation, agricultural operation, Natural calamity monitoring and assessment, urban planning
It is protected and the fields such as monitoring, public safety and advertisement photography with municipal administration, forest disease and pest.
Currently, digital camera has tens brands on the market, and each brand segments different series.It takes photo by plane according to difference
Demand, needs to carry different types of digital camera and is shot.Existing unmanned aerial vehicle onboard digital camera control passes through control mostly
Cable release processed is taken pictures, and does not have focal length, aperture, ISO controls, it is (as empty in stored also to lack photograph On-line testing, camera status
Between, scene mode, sensitivity, battery capacity, camera time etc.) sophisticated functions such as monitoring, can not meet unmanned plane of taking photo by plane will
The requirement of photo files is written in the data such as longitude and latitude, the height above sea level of photograph taking moment.
It is entitled " unmanned plane Zoom control system " at patent application publication number " CN107395949A ", provide one
Unmanned plane Zoom control system is planted, the camera control plate in patent is adjusted using optical coupled switch control camera focus, is not had
The Premium Features such as standby complicated photo extract real-time, camera status are read, aperture controls；What patent proposed utilizes optical coupled switch control
Mode processed, hence it is evident that backward in technique；The described control digital camera zoom of the patent up to 30 times of zooms more than, it is dumb, no
The wide scope selection taken photo by plane to digital camera can be met.
It is entitled " a kind of unmanned aerial vehicle onboard intelligent digital camera controller " in number of patent application " 201621036834.9 ",
The camera controller of offer does not have external GPS receiver, thus lacks the GPS data acquisition of photograph moment.What it was provided
Scheme does not also include system power supply module, thus cannot be airborne digital camera, GPS receiver power supply, this can reduce its reality
Border application range, especially low temperature environment and for a long time execution task.
Invention content
Present invention solves the technical problem that being：It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of nothings
Man-machine airborne digital camera control system, to solve the problems, such as to propose in above-mentioned technical background.
The technical scheme is that：A kind of unmanned aerial vehicle onboard digital camera control system, which is characterized in that including camera
Control unit, airborne Transmit-Receive Unit, GPS receiver and digital camera；The camera control unit include embedded-type ARM CPU,
Usb interface module, Ports Serial Communication Ports, ethernet interface module, Nand flash storages module and system power supply module；With
Too network interface module receives the control instruction that is sent from ground based terminal console, and reaches embedded-type ARM CPU, embedded
After ARM CPU are decoded control instruction, digital camera is passed to by usb interface module, digital camera executes the control and refers to
It enables；
Airborne Transmit-Receive Unit receives adjustment digital camera focal length size from ground based terminal console, aperture size, mirror
After the far and near control instruction signal of head, embedded-type ARM CPU is transmitted to by Ethernet interface, embedded-type ARM CPU is to control instruction
After signal is decoded, it is transmitted to digital camera through usb interface module, digital camera executes the control instruction of adjustment；
Airborne Transmit-Receive Unit receives the photographing instruction sent from ground based terminal console, passes through ethernet interface module
It is sent to embedded-type ARM CPU, photographing instruction is sent to digital camera by embedded-type ARM CPU by usb interface module, simultaneously
The unmanned plane longitude and latitude of moment, altitude data information are reached Nand by GPS receiver through Ports Serial Communication Ports
It is stored in flash storage module；
When ground terminal console need to extract the current parameter state of digital camera, airborne Transmit-Receive Unit is looked into reception
It sees command signal, through ethernet interface module, is sent to embedded-type ARM CPU, embedded-type ARM CPU is to checking command signal solution
After code, it is sent to digital camera through usb interface module, digital camera feeds back to parameter state through usb interface module embedded
ARM CPU are passed to too network interface module, are passed through ethernet interface module after embedded-type ARM CPU carries out data framing processing
To airborne Transmit-Receive Unit, treated that data carry out secondary framing, coding by framing for airborne Transmit-Receive Unit, is sent to ground based terminal
Console realizes monitoring of the ground based terminal console to digital camera real-time status；
When ground terminal console need to extract the specified photo captured by digital camera, airborne Transmit-Receive Unit will receive
Control terminal instruction in ground is sent to embedded-type ARM CPU through ethernet interface module, and embedded-type ARM CPU is by Instruction decoding
Afterwards, digital camera is sent to by usb interface module, specified photo is sent to embedded-type ARM CPU by digital camera, embedded
The corresponding GPS information of photo files is written in photo files and completes framing by ARM CPU, and machine is reached through ethernet interface module
Transmit-Receive Unit is carried, the data received are carried out secondary framing, ground based terminal console is sent to after coding by airborne Transmit-Receive Unit；System
System power module is camera control unit, GPS receiver and digital camera power supply；
Camera control unit, airborne Transmit-Receive Unit and GPS receiver are respectively positioned on unmanned plane；Digital camera is located at unmanned plane
Airborne tripod head on.
The further technical solution of the present invention is：The usb interface module includes TPS2065D chips and two
TPD2E001 chips, wherein TPS2065D chips are output to USB interface as power splitter, by the voltage isolation of system；
TPD2E001 chips protect chip as the ESD of usb data signal.
The present invention further technical solution be：A kind of control method of unmanned aerial vehicle onboard digital camera control system,
It is characterized in that, includes the following steps：
Step 1：When unmanned plane during flying, ground based terminal console is sent to digital camera shutter switch, focal length size, light
The control instruction signal of size, camera lens distance is enclosed, control instruction signal reaches airborne Transmit-Receive Unit, and airborne Transmit-Receive Unit will control
After the processing of command signal demodulation coding, embedded-type ARM CPU is reached through ethernet interface module, after embedded-type ARM CPU decodings,
Digital camera is reached by usb interface module, digital camera executes corresponding control instruction；
Step 2：Airborne Transmit-Receive Unit receives the photographing instruction sent from ground based terminal console, passes through Ethernet
Interface module is sent to embedded-type ARM CPU, and photographing instruction is sent to number by embedded-type ARM CPU by usb interface module
Camera, digital camera start to take pictures；While digital camera shoots each photo, ARM CPU acquisition moments come from GPS
The unmanned plane longitude and latitude of receiver, altitude data information generate record, store into Nand flash storage modules；
Step 3：When ground terminal console will check that the instruction of photograph is sent to airborne Transmit-Receive Unit, airborne transmitting-receiving is single
Member is sent to camera control unit, camera control unit will shine by after the instruction demodulation coding received according to agreement frame format
Piece reads instruction and is sent to camera, and specified photo files are sent to camera control unit, ARM by camera by usb interface module
CPU after GPS parameter read-in photo files corresponding with photo, through being packaged, framing, will be reached airborne by ethernet interface module
The information received is carried out secondary framing coding through airborne Transmit-Receive Unit, is sent to ground control terminal platform by Transmit-Receive Unit；
Step 4：When ground terminal console need to check camera parameter state, transmission checks command signal to airborne receipts
Bill member is passed to embedded-type ARM after airborne Transmit-Receive Unit is to checking the processing of command signal demodulation coding through ethernet interface module
CPU is decoded, and decoded signal is passed to digital camera through usb interface module；Digital camera passes through current parameter state
Usb interface module is passed to embedded-type ARM CPU；After embedded-type ARM CPU carries out data framing processing, it is passed to Ethernet interface
Module reaches airborne Transmit-Receive Unit by ethernet interface module, through airborne Transmit-Receive Unit by the parameter status information received into
After the secondary framing coding of row, it is sent to ground control terminal platform.
Technique effect
The present invention having the technical effect that compared with the existing technology：A kind of unmanned aerial vehicle onboard digital camera control system can take
Carry different manufacturers, the digital camera of different model is taken photo by plane demand to meet difference；The camera control system includes GPS receiver
Machine is cut out, splices and is analyzed convenient for the photo later stage for acquiring moment GPS information；The system power supply establishes one's own system,
Camera does not need battery, and there is no under low temperature the problem of battery work unreliable, the camera battery not enough power supply that works long hours；Institute
The system of stating can extract real-time photograph as needed, unmanned plane can be met and shoot demand under high risk, adverse circumstances, also
It is：It is not required to unmanned plane to make a return voyage, the photo for target of taking photo by plane can be obtained in real time；The system removes traditional shutter to digital camera control
Control is outer, further includes aperture, focal length, lens control；In addition, the system can also supervise camera status parameter in real time
It surveys.
Description of the drawings
Fig. 1 is present system schematic diagram；
Fig. 2 is camera control unit internal frame diagram；
Fig. 3 camera control unit principle total figures；
Fig. 4 system power supply module principle figures；
Fig. 5 usb interface module schematic diagrams；
Fig. 6 ethernet interface module schematic diagrams；
Fig. 7 Nand flash storage module principle figures；
Fig. 8 DDR memory philosophy figures；
Fig. 9 embedded-type ARM CPU schematic diagrams；
Figure 10 serial received module principle figures
Specific implementation mode
A kind of technical solution of unmanned aerial vehicle onboard digital camera control system is：Including digital camera, camera control unit,
Airborne Transmit-Receive Unit, GPS receiver, referring to Fig. 1.
Digital camera is mounted on airborne tripod head, camera control unit by usb interface module and system power supply module with
Connection.
Airborne Transmit-Receive Unit is attached with camera control unit by ethernet interface module.
Airborne GPS receiver is connect with camera control unit by serial interface module and system power supply module.
The camera control unit includes that ethernet interface module, embedded-type ARM CPU, system power supply module, USB connect
Mouth mold block, DDR memories, Nand flash storages module, serial interface module etc., referring to Fig. 2.
System power supply module provides power supply for each module, Airborne Camera and GPS receiver inside camera control unit；
Usb interface module is used as data communication interface between camera control unit and camera；
DDR memories, Nand flash storage modules are that ARM CPU run necessary hardware environment；
Ethernet interface module is for camera control unit and airborne Transmit-Receive Unit data exchange；
Ports Serial Communication Ports are used to receive the information such as longitude and latitude, the height above sea level from GPS receiver.
Further, on the one hand the camera control sent from ground based terminal console is instructed and is sent out by airborne Transmit-Receive Unit
Camera control unit is given, the information such as the picture data of camera control unit, camera parameter are on the other hand sent to ground control
Platform processed.
Further, GPS receiver acquires the information such as longitude and latitude, height residing for unmanned plane in real time, and sends it to
Camera control unit.
Further, the camera control unit include embedded-type ARM CPU, usb interface module, Ports Serial Communication Ports,
Ethernet interface module, Nand flash storages module and system power supply module.Embedded-type ARM CPU is responsible for Instruction decoding,
Data framing, the work such as GPS information acquisition；Usb interface module is the interface of camera control unit and digital camera；Ethernet connects
Mouth mold block is airborne Transmit-Receive Unit and camera control unit communication interface；Camera control unit passes through serial ports receiving module and GPS
Receiver communicates；System power supply module be camera control unit inside, GPS receiver and digital camera power supply.
Further, after airborne Transmit-Receive Unit receives the photographing instruction that ground based terminal console is sent, pass through Ethernet
Interface is transmitted to camera control unit, after embedded-type ARM CPU is decoded the control instruction signal received, through USB interface mould
Block is transmitted to digital camera, and digital camera executes action of taking pictures, meanwhile, embedded-type ARM CPU passes through Ports Serial Communication Ports and acquires bat
Longitude and latitude of the moment from GPS receiver, altitude data information are taken the photograph, data information is recorded and is stored to Nand Flash
In memory module.
Further, when to receive the digital camera focal length that sends from ground based terminal console big for airborne Transmit-Receive Unit
After small, aperture size, camera lens distance control instruction signal, camera control unit, embedded-type ARM are transmitted to by Ethernet interface
After CPU is decoded the control instruction signal received, it is transmitted to digital camera through usb interface module, digital camera executes corresponding
Control instruction.
Further, when ground terminal console need to extract the current parameter state of digital camera, airborne Transmit-Receive Unit
The parameter of reception is checked into command signal, through ethernet interface module, is sent to embedded-type ARM CPU, CPU pairs of embedded-type ARM
After control instruction signal is decoded, it is sent to digital camera through usb interface module, digital camera passes through parameter current state
Usb interface module feeds back to embedded-type ARM CPU, and after embedded-type ARM CPU carries out data framing processing, incoming Ethernet connects
Mouth mold block reaches airborne Transmit-Receive Unit by ethernet interface module, and treated that data carry out by framing for airborne Transmit-Receive Unit
After secondary framing, coding, it is sent to ground control terminal, realizes monitoring of the ground control terminal to digital camera real-time status.
Further, when ground control terminal need to extract the specified photo captured by digital camera, airborne Transmit-Receive Unit
The ground control terminal instruction that will be received, the embedded-type ARM CPU in camera control unit is sent to through ethernet interface module,
Embedded-type ARM CPU is sent to digital camera, digital camera sends specified photo by after Instruction decoding by usb interface module
Embedded-type ARM CPU, embedded-type ARM CPU is given to be written in photo files and complete framing by the corresponding GPS information of photo files,
Airborne Transmit-Receive Unit is reached through ethernet interface module, and the data received are carried out secondary framing by airborne Transmit-Receive Unit, after coding
It is sent to ground control terminal.
Fig. 3~Figure 10 is a specific embodiment circuit diagram of the camera control unit of the present invention, design chips choosing
It selects, configure and its function is described as follows：
001：The main company of camera control unit total figure (Fig. 3), each module in description camera control unit inside and intermodule
Connect relationship；
002：System power supply module section (Fig. 4), the part be responsible for the+12V that aircraft is provided power supplys be converted to camera,
GPS receiver and camera control unit inside chip correspond to level demand.
System power supply module design is as follows：
It is+12V according to unmanned aerial vehicle onboard power supply voltage, thus：A) in order to meet digital camera+7.2V power supply and
+ the 3.3V of GPS receiver powers, and design selects chip TPS54290 that+12V voltages are converted to+7.2V and+3.3V.B) consider
It is+5V to most LDO power management chips input voltage on the market, such as the TPS65053 chosen in design, USB interface chip
TPS2065D etc..Therefore, design selects TPS5420 that+12V is converted to+5V.C) serial interface module of camera control unit needs
+ 3.3V is wanted to power, ethernet interface module needs+3.3V and+1.8V power, NAND flash storage module for power supply+3.3V,
+ 1.8V the power supplies of DDR memory needs, embedded-type ARM CPU needs+1.2V ,+1.8V ,+3.3V power supplies, in order to meet these demands,
+ 5V is converted to+1.2V ,+1.8V and+3.3V by design alternative TPS65053.+ the 3.3V of battery is become in addition, choosing SPX3819
It is changed to+1.2V, is powered to ARM CPU RTC clocks.
Based on above-mentioned design scheme, the power management chip configuration of selection is as follows：
1) TI companies chip TPS5420：Airborne supply voltage+12V is converted into+5V.Chip configures：Chip requirement
VSENSE=1.221V, will allow output voltage of power management chip Vout=+5V, according to formula：Vout×R118/(R117+
R118)=1.221V takes R117=10K Ω, calculates：R118≈3.24KΩ.
2) TI company's Ts PS65053 plurality of voltages conversion chips are responsible for+5V level conversions being inside camera control unit
The level that chip needs, including DC/DC voltages conversion configurations and LDO voltage conversion configurations two parts：
DC/DC partial powers are converted：5V voltages are converted into+1.2V and+3.3V, are configured according to chip output voltage public
Formula：Vout=Vref × (1+R1/R2), wherein Vref=+0.6V.Work as Vout=+1.2V：R108=150K Ω are taken, are calculated
R104=150k Ω；Work as Vout=+3.3V, take R109=680K Ω, obtains R104 ≈ 150K Ω.
LDO voltage conversion configurations：Input 5V voltages are converted into+1.8V and+3.3V.Allocation formula：Vout=Vref ×
(1+R1/R2), wherein Vref=+1V when Vout=+1.8V, take R110=120K Ω, obtain R106=150K Ω；Vout=+
When 3.3V, R111=230K Ω are taken, obtain R107=100K Ω；
3) power management chip SPX3819 is responsible for input+3.3V voltages being converted to+1.8V, in ARM cpu chips
Portion's clock power supply uses.
4) TPS54290 is responsible for airborne+12V voltages being converted to+7.2V (adjustable) and+3.3V (adjustable), is Airborne Camera
It powers with GPS receiver, resistance configuration is carried out according to formula Rbias=Vfb × Rfb/ (Vout-Vfb), wherein Vfb=+
0.8V。
003：Usb interface module (Fig. 5)：
1)+5V voltages the isolation of system is output to USB interface by TPS2065D as power splitter；
2) TPD2E001 protects chip as the ESD of usb data signal.
004：Ethernet interface module (Fig. 6) selects KSZ8001SL1 to make physical interface chip, and HR601680E is network
Isolating transformer；
005：Nand flash storages module (Fig. 7) uses Samsung storage chip K9G8G08U0A, capacity 1GB；
006：DDR memories (Fig. 8) MT47H64M16BT, memory size 128MB；
007：ARM CPU (Fig. 9) select the OMAP138L of TI companies to make camera control unit CPU；
008：Ports Serial Communication Ports (Figure 10) part selects MAX3232 as RS232 serial port level conversion interface chips,
74LV244 is used as input and output isolation buffer, and digital switch ADG822 is used as the occasion for needing to take pictures using shutter line traffic control；
The foregoing describe the main chip of each module, peripheral filter capacitance, resistance, the inductance of each module main chip are auxiliary
Circuit is helped, crystal oscillator, no further details to be given herein for connector etc., referring specifically to attached drawing.
In camera control unit, embedded-type ARM CPU is responsible for processing and comes from airborne receipts as camera control unit core
The message of bill member decodes, and is required to realize that camera zoom, aperture are adjusted, shooting, camera status is read and photograph is carried according to instruction
The operations such as take；Meanwhile ARM CPU receive the information such as longitude and latitude, height above sea level from GPS receiver, record and when needed
By the corresponding photo files of write-in in.During the present invention is implemented, it should be noted that airborne Transmit-Receive Unit is sent to camera control
The message format of unit is described as follows：
Wherein, flag bit, " 0xAA55 " indicate that the message is camera control message；
Camera control instruction field is three bytes, and three byte contents are the same, in order to solve to instruct error code in transmission,
Using two from three judgement (the identical i.e. approval instruction of two bytes is legal, is executed).The field is multiplexed for multiple instructions, specific fixed
Justice is as follows：
" 0x999999 " expression is taken pictures；
" 0x101010 " indicates that aperture is adjusted；
" 0xF0F0F0 " indicates to read camera status；
" 0x010101 " indicates zoom, and zoom magnification is determined in conjunction with 2 byte parameters of field below；
" 0x404040 " is indicated to read photo, is extracted according to 2 byte contents of field below and specify photo；
Such as：It receives instruction " 0xAA554040400003 " and indicates extraction the 3rd photo of camera.
It should be pointed out that camera control unit is sent to the control instruction of camera by USB interface and camera returns
Status data to define be that the agreement that the camera manufacturer carried by platform provides determines that manufacturer has not due to different cameral
With agreement, do not describe specifically herein.In addition, the control function of camera can also expand according to the agreement that camera manufacturer provides
Exhibition is not limited to the control function of description.
In the present invention is implemented, the photo and camera status data extracted from camera is needed according to certain message lattice
Formula is sent to airborne Transmit-Receive Unit：
| Field name | Flag bit | Camera status | Frame number | Data length | Picture data |
| Byte number | 2 | 2 | 1 | 2 | 0~65535 |
Wherein, flag bit, 0xeb90 indicate that the message is camera data；
" camera status " field needs to be defined according to camera manufacturer offer agreement if front refers to；
" frame number " field, photo files transmission need to carry out subpackage to photo files, and packetized data is known with frame number
Not, range " 0x00~0xFF "；
" data length " field length is 2 bytes, indicates the byte number for the picture data that picture data field includes,
0x0000~0xFFFF；
Picture data length is 0~65535 byte.
As long as the JPG photos for the camera shooting carried are exif2.1 or more versions, photo files include the information of GPS
Block.ARM CPU are responsible for acquiring the information such as longitude and latitude, height above sea level of the moment from GPS receiver, and by write-in JPG
In the GPS information block of photo, completes photograph taking geographical location information and add function.
Finally, it should be noted that above-mentioned inventive embodiments are for illustration only, can not represent the quality of embodiment.It should
It points out, for those of ordinary skill in the art, under the premise of not departing from inventive concept, several deformations can also be made
And improvement, these are all within the scope of protection of the present invention.
Claims (3)
1. a kind of unmanned aerial vehicle onboard digital camera control system, which is characterized in that single including camera control unit, airborne transmitting-receiving
Member, GPS receiver and digital camera；The camera control unit includes embedded-type ARM CPU, usb interface module, serial interface
Module, ethernet interface module, Nand flash storages module and system power supply module；Ethernet interface module reception comes from
The control instruction that ground based terminal console is sent, and reach embedded-type ARM CPU, embedded-type ARM CPU to control instruction into
After row decoding, digital camera is passed to by usb interface module, digital camera executes the control instruction；
It is remote that airborne Transmit-Receive Unit receives adjustment digital camera focal length size from ground based terminal console, aperture size, camera lens
After nearly control instruction signal, embedded-type ARM CPU is transmitted to by Ethernet interface, embedded-type ARM CPU is to control instruction signal
After being decoded, it is transmitted to digital camera through usb interface module, digital camera executes the control instruction of adjustment；
Airborne Transmit-Receive Unit receives the photographing instruction sent from ground based terminal console, is sent by ethernet interface module
Give embedded-type ARM CPU, embedded-type ARM CPU that photographing instruction is sent to digital camera, while GPS by usb interface module
Receiver reaches Nand Flash by the unmanned plane longitude and latitude of moment, altitude data information, through Ports Serial Communication Ports
It is stored in memory module；
When ground terminal console need to extract the current parameter state of digital camera, airborne Transmit-Receive Unit checks finger by reception
Signal is enabled, through ethernet interface module, is sent to embedded-type ARM CPU, embedded-type ARM CPU is to checking that command signal decodes
Afterwards, it is sent to digital camera through usb interface module, parameter state is fed back to embedded-type ARM by digital camera through usb interface module
CPU is passed to too network interface module, machine is reached through ethernet interface module after embedded-type ARM CPU carries out data framing processing
Transmit-Receive Unit is carried, framing treated data are carried out secondary framing, coding, are sent to ground based terminal control by airborne Transmit-Receive Unit
Platform realizes monitoring of the ground based terminal console to digital camera real-time status；
When ground terminal console need to extract the specified photo captured by digital camera, ground that airborne Transmit-Receive Unit will receive
Control terminal instructs, and embedded-type ARM CPU is sent to through ethernet interface module, embedded-type ARM CPU by after Instruction decoding, by
Usb interface module is sent to digital camera, and specified photo is sent to embedded-type ARM CPU, embedded-type ARM CPU by digital camera
The corresponding GPS information of photo files is written in photo files and is completed framing, it is single to reach airborne transmitting-receiving through too network interface module
The data received are carried out secondary framing, ground based terminal console are sent to after coding by member, airborne Transmit-Receive Unit；System power supply mould
Block is camera control unit, GPS receiver and digital camera power supply；
Camera control unit, airborne Transmit-Receive Unit and GPS receiver are respectively positioned on unmanned plane；Digital camera is located at the machine of unmanned plane
It carries on holder.
2. a kind of unmanned aerial vehicle onboard digital camera control system as described in claim 1, which is characterized in that the USB interface
Module includes TPS2065D chips and two TPD2E001 chips, and wherein TPS2065D chips are as power splitter, by the electricity of system
Pressure isolation is output to USB interface；TPD2E001 chips protect chip as the ESD of usb data signal.
3. the control method based on unmanned aerial vehicle onboard digital camera control system described in claim 1, which is characterized in that including with
Lower step：
Step 1：When unmanned plane during flying, integer code camera shutter switch, focal length size, light are exchanged in the transmission of ground based terminal console
The control instruction signal of size, camera lens distance is enclosed, control instruction signal reaches airborne Transmit-Receive Unit, and airborne Transmit-Receive Unit will control
After the processing of command signal demodulation coding, embedded-type ARM CPU is reached through ethernet interface module, after embedded-type ARM CPU decodings,
Digital camera is reached by usb interface module, digital camera executes corresponding control instruction；
Step 2：Airborne Transmit-Receive Unit receives the photographing instruction sent from ground based terminal console, passes through Ethernet interface
Module is sent to embedded-type ARM CPU, and photographing instruction is sent to digital camera by embedded-type ARM CPU by usb interface module,
Digital camera starts to take pictures；While digital camera shoots each photo, ARM CPU acquisition moments come from GPS receiver
The unmanned plane longitude and latitude of machine, altitude data information generate record, store into Nand flash storage modules；
Step 3：When ground terminal console will check that the instruction of photograph is sent to airborne Transmit-Receive Unit, airborne Transmit-Receive Unit will
After the instruction demodulation coding received, it is sent to camera control unit according to agreement frame format, camera control unit reads photo
Instruction fetch is sent to camera, and specified photo files are sent to camera control unit, ARM CPU by camera by usb interface module
After GPS parameter read-in photo files corresponding with photo, through being packaged, framing, airborne receipts will be reached by ethernet interface module
The information received is carried out secondary framing coding through airborne Transmit-Receive Unit, is sent to ground control terminal platform by bill member；
Step 4：When ground terminal console need to check camera parameter state, transmission checks that command signal is single to airborne transmitting-receiving
Member is passed to embedded-type ARM CPU after airborne Transmit-Receive Unit is to checking the processing of command signal demodulation coding through ethernet interface module
It is decoded, decoded signal is passed to digital camera through usb interface module；Digital camera is by current parameter state through USB
Interface module is passed to embedded-type ARM CPU；After embedded-type ARM CPU carries out data framing processing, it is passed to Ethernet interface mould
Block reaches airborne Transmit-Receive Unit by ethernet interface module, carries out the parameter status information received through airborne Transmit-Receive Unit
After secondary framing coding, it is sent to ground control terminal platform.
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