CN205265852U - Image transmission under water - Google Patents
Image transmission under water Download PDFInfo
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- CN205265852U CN205265852U CN201620002997.9U CN201620002997U CN205265852U CN 205265852 U CN205265852 U CN 205265852U CN 201620002997 U CN201620002997 U CN 201620002997U CN 205265852 U CN205265852 U CN 205265852U
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Abstract
The utility model discloses an image transmission under water, send part and receiving part including what realize the image data simultaneous transmission and reception to realize the image data transmission of full duplex, characterized in that: the sending part divides including camera, image acquisition and compressor circuit, channel coding and modulated circuit, DA conversion module, power amplification under water and sends and change the circuit and send the transducer, it includes that receiving transducer, receiving converter and amplification and filtering circuit, AD conversion module, demodulation and channel decoding circuit and figure decompress and rebuild the circuit to state receiving part. The utility model discloses an image transmission under water can adopt ARM+DSP's framework, on the performance basis of guaranteeing full duplex communication, can satisfy requirement miniaturized, the low -power consumption. The utility model discloses an image transmission under water can use under water robot, underwater operation system etc. Under water in the image transmission system, and this system has low power dissipation, with low costs, characteristics such as the circuit is simple, reliability height.
Description
Technical field
The utility model relates to a kind of underwater picture transmitting device, in particular, relates in particular to a kind of underwater picture transmitting device with full duplex image transmission function.
Background technology
Along with deepening continuously that ocean is explored, the demand of underwater picture transmission is day by day urgent. Underwater picture transmitting device is a kind of logical equipment of seeing, and he can be used as the eyes of underwater robot or the remote monitoring module of automatic system under water, by IMAQ and send and receive the other side and send over image and show. It is abundant in content that underwater picture transmits, and can show photo information beyond expression of words in voice communication, plays the effect of " very clear ". Underwater acoustic channel is extremely complicated random Space Time-frequency variable-parameter channel, has the factors such as arrowband, height are made an uproar, strong multipath interference. These factors seriously limit the high speed of underwater acoustic channel and propagate, thus Bandwidth-Constrained. For the image of high quality in limited under water bandwidth, develop a kind of underwater picture transmitting device based on ARM+DSP hardware platform.
Summary of the invention
The utility model, in order to overcome the shortcoming of above-mentioned technical problem, provides a kind of underwater picture transmitting device.
Underwater picture transmitting device of the present utility model, comprises and realizes transmitting portion and the receiving unit that view data is received and dispatched simultaneously, to realize the image data transmission of full duplex; It is characterized in that: described transmitting portion comprises underwater camera head, IMAQ and compressor circuit, chnnel coding and modulation circuit, D/A modular converter, power amplification and sends conversion circuit and send transducer, the view data that IMAQ and compressor circuit obtain underwater camera head gathers and compressed encoding processing, and data after treatment are sent to chnnel coding and modulation circuit, so that the view data of input is added to synchronous head, Error Correction of Coding and modulation treatment successively, then data after treatment are inputed to D/A modular converter and be converted into analog signal; Power amplification and send change-over circuit the analog signal after transforming amplified and change after, input to transmission transducer, transmission transducer is converted into by the signal of input the form that can propagate in underwater acoustic channel and sends;
Described receiving unit comprises receiving transducer, receives conversion and filtering and amplifying circuit, A/D modular converter, demodulation and channel decoding circuit and figure decompress(ion) and reconstruction circuit, the signal of propagating in underwater acoustic channel is after the reception of receiving transducer, input to and receive conversion and filtering and amplifying circuit is changed, amplification, filtering processing, then input in A/D modular converter and be converted into data signal; Data signal after demodulation and channel decoding circuit are changed A/D is carried out the processing of demodulation, error correction decoding, removal synchronous head, and data after treatment are inputed in figure decompress(ion) and reconstruction circuit; Figure decompress(ion) and reconstruction circuit to the data that receive decompress, image reconstruction process, and show by LCD display, realize the reception of view data.
Underwater picture transmitting device of the present utility model, described IMAQ and compressor circuit and image decompression and reconstruction circuit are made up of ARM microprocessor, ARM microprocessor is connected with LCD display with underwater camera head by data wire, control line, and ARM microprocessor is also connected with SDRAM memory and NANDFLASH memory by data wire, address wire and control line;
Described chnnel coding and modulation circuit and demodulation and channel decoding circuit are made up of DSP microprocessor, and DSP microprocessor is connected by data wire, holding wire and control line with ARM microprocessor, to realize data transmission and reception; DSP microprocessor is connected with FLASH memory and is connected with A/D modular converter with D/A modular converter.
Underwater picture transmitting device of the present utility model, described ARM microprocessor adopts the chip that model is S3C6410, DSP microprocessor adopts the chip that model is TMS320C6713, ARM microprocessor is connected as data wire by UART serial line interface with DSP microprocessor, to realize the transmitting-receiving of data.
The beneficial effects of the utility model are: underwater picture transmitting device of the present utility model, the IMAQ of transmitting portion and compressor circuit, chnnel coding and the modulation circuit signal to the output of underwater camera head, gather respectively, compressed encoding and interpolation synchronous head, Error Correction of Coding, modulation treatment, after allowing, again signal is carried out to D/A conversion, power amplification processing successively, be converted into the form that can transmit in underwater acoustic channel, realize the transmission under water of view data. Receiving unit first to the signal receiving change, amplification, filtering and A/D conversion process, then in demodulation, decompress(ion) and image reconstruction process through demodulation and channel decoding circuit, image decompression and reconstruction circuit, and show by LDC display screen, realize the reception of image.
Underwater picture transmitting device of the present utility model, can adopt the framework of ARM+DSP, can realize the image transmission/reception of full-duplex mode; Arm processor has that volume is little, low in energy consumption, management and the advantage such as processing capability in real time is strong, and DSP has the ability of processing in real time fast; The image transmission of ARM+DSP framework is ensureing, in the performance basis of full-duplex communication, can to meet the requirement of miniaturization, low-power consumption. Underwater picture transmitting device of the present utility model can be applied in the underwater picture such as underwater robot, underwater work system transmission system, and that this system has is low in energy consumption, cost is low, circuit is simple, reliability high.
Brief description of the drawings
Fig. 1 is the theory diagram of underwater picture transmitting device of the present utility model;
Fig. 2 is the circuit theory diagrams of underwater picture transmitting device of the present utility model.
In figure: 1 underwater camera head, 2 IMAQs and compressor circuit, 3 chnnel codings and modulation circuit, 4D/A modular converter, 5 power amplifications and transmission change-over circuit, 6 send transducers; 7 receiving transducers, 8 receive conversion and filtering and amplifying circuit, 9A/D modular converter, 10 demodulation and channel decoding circuit, 11 image decompressions and reconstruction circuit, 12LCD display screen.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, provided the theory diagram of underwater picture transmitting device of the present utility model, it is made up of transmitting portion and receiving unit, and the transmitting portion in underwater picture transmitting device and receiving unit can be worked simultaneously, forms full-duplex communication device. Transmitting portion is by underwater camera head 1, IMAQ and compressor circuit 2, chnnel coding and modulation circuit 3, D/A modular converter 4, power amplification and send change-over circuit 5, send transducer 6 forms, underwater camera head 1 is for obtaining underwater picture, the image that IMAQ and compressor circuit 2 are exported underwater camera head 1 gathers and compressed encoding processing, and view data after treatment is sent in chnnel coding and modulation circuit 3. Chnnel coding and modulation circuit add synchronous head, Error Correction of Coding and modulation treatment successively to the data that receive, and then input in D/A modular converter 4.
The numerical data of input is converted into analog signal by D/A modular converter 4, the analog signal that power amplification and transmission change-over circuit 5 are exported D/A modular converter 4 is amplified, conversion process, and send it in transmission transducer 6, to be converted to the form that can propagate in underwater acoustic channel, realize the propagation of image in water body medium.
Shown receiving unit by receiving transducer 7, receive conversion and filtering and amplifying circuit 8, A/D modular converter 9, demodulation and channel decoding circuit 10 and image decompression and reconstruction circuit 11 and form, after receiving transducer 7 receives the picture signal of propagating in underwater acoustic channel, be sent to and receive in conversion and filtering and amplifying circuit 8, by receive conversion and filtering and amplifying circuit 8 to signal change, amplification and filtering processing, and input in A/D change-over circuit 9, analog signal is converted to data signal.
The data signal of conversion is through the processing of the demodulation of demodulation and channel decoding circuit 10, error correction decoding, removal synchronous head, then inputs in image decompression and reconstruction circuit 11. Image decompression and reconstruction circuit 11 are to the view data the receiving design of graphics picture again that decompresses also, and the image of structure shows through LCD display 12, realizes the reception of image.
As shown in Figure 2, the circuit theory diagrams of underwater picture transmitting device of the present utility model are provided, shown ARM microprocessor has formed IMAQ and compressor circuit 2 and image decompression and reconstruction circuit 11, ARM microprocessor is connected with LCD display 12 with underwater camera head 1 with control line by data wire, the view data gathering to receive underwater camera head 1, and show by LCD display 12 image receiving. ARM microprocessor is also connected with SDRAM memory and NANDFLASH memory.
ARM microprocessor can adopt the S3C6410 chip of Samsung, and what this chip adopted is ARM1176JZF-S core, and operation dominant frequency is 553MHZ. Inner integrated multiple powerful hardware accelerators, have been used for that video image processing, audio frequency processing, 2D figure are accelerated and the task such as demonstration. S3C6410 has abundant interface, wherein comprises CAMERA interface, 24 very color TFT-LCD control unit interfaces, I2C EBI, 4 UART passages, 32 DMA passages, general purpose I/O port and clock interfaces, DRAM port, FLASH/ROM port etc. CAMERA interface is mainly used in connecting underwater camera head module. 24 very color TFT-LCD control unit interfaces are used for connecting LCD LCDs. Under I2C bus water supply, camera module sends and controls data. UART interface is for carrying out data communication with DSP. DRAM port can be supported DDR and SDRAM by configuration, and FLASH/ROM port can be supported the external memory storage such as NORFLASH, NANDFLASH. S3C6410, by complete as far as possible system peripheral interface is provided, reduces costs to greatest extent, and this chip has the features such as low in energy consumption, peripheral circuit is simple simultaneously, is highly suitable for cost, power consumption requires in harsh application.
Shown DSP microprocessor has formed chnnel coding and modulation circuit 3 and demodulation and channel decoding circuit 10, DSP microprocessor is connected by data wire, holding wire and control line with ARM microprocessor, to realize the transfer of data between DSP microprocessor and ARM microprocessor. DSP microprocessor is connected with D/A modular converter 4, A/D modular converter 9, and DSP microprocessor is also connected with FLASH memory.
DSP microprocessor can adopt the TMS320C6713 of TI company, and this chip is the Floating-point DSP that operational capability is strong. Have the dominant frequency up to 200MHZ, maximum disposal ability can be up to 1800MIPS. This chip has abundant interface, comprising: serial bus interface, EMIF EBI, spi bus interface etc. Serial line interface is for communicating with ARM; EMIF EBI is used for expanding external SRAM and FLASH; Spi bus interface is for being connected with A/D, D/A chip.
D/A modular converter 4, A/D modular converter 9 can adopt the AD73311L of AD company, and this chip is A/D, the D/A converter of 16bit serial. This chip adopts 3.0V single power supply, can realize light connection by SPI interface with DSP.
Like this, make underwater picture transmitting device of the present utility model there is ARM+DSP framework, can realize the image transmission/reception of full-duplex mode. Arm processor has that volume is little, low in energy consumption, management and the advantage such as processing capability in real time is strong, and DSP has the ability of processing in real time fast. The image transmission of ARM+DSP framework is ensureing, in the performance basis of full-duplex communication, can to meet the requirement of miniaturization, low-power consumption.
In IMAQ, compression and transfer of data flow process, image is long process frame by frame, if the data that read do not expire a frame, continues reads image data; If a full frame carries out doing the processing of two aspects: (1) judges whether to continue to gather, if need to continue to gather next frame, reads image data, if do not need to gather, closes image transmission; (2) call image compression algorithm image is carried out to compressed encoding, the data after coding send to DSP by UART.
In modulation, in demodulation flow process, DSP microprocessor receives after full frame data, to data add synchronously, channel Error Correction of Coding, modulation operations, finally send to D/A modular converter 4 to change by spi bus modulation signal. After the full frame of data that DSP microprocessor receives by spi bus, DSP microprocessor carries out demodulation to the data of A/D modular converter input, data after demodulation, through channel error correction decoding, after removing synchronously, send to arm processor by image coded data by UART serial ports.
Claims (3)
1. a underwater picture transmitting device, comprises and realizes transmitting portion and the receiving unit that view data is received and dispatched simultaneously, to realize the image data transmission of full duplex, it is characterized in that: described transmitting portion comprises underwater camera head (1), IMAQ and compressor circuit (2), chnnel coding and modulation circuit (3), D/A modular converter (4), power amplification and transmission conversion circuit (5) and transmission transducer (6), the view data that IMAQ and compressor circuit obtain underwater camera head gathers and compressed encoding processing, and data after treatment are sent to chnnel coding and modulation circuit, so that the view data of input is added to synchronous head successively, Error Correction of Coding and modulation treatment, then data after treatment are inputed to D/A modular converter and be converted into analog signal, power amplification and send change-over circuit the analog signal after transforming amplified and change after, input to transmission transducer, transmission transducer is converted into by the signal of input the form that can propagate in underwater acoustic channel and sends,
Described receiving unit comprises receiving transducer (7), receives conversion and filtering and amplifying circuit (8), A/D modular converter (9), demodulation and channel decoding circuit (10) and figure decompress(ion) and reconstruction circuit (11), the signal of propagating in underwater acoustic channel is after the reception of receiving transducer, input to and receive conversion and filtering and amplifying circuit is changed, amplification, filtering processing, then input in A/D modular converter and be converted into data signal; Data signal after demodulation and channel decoding circuit are changed A/D is carried out the processing of demodulation, error correction decoding, removal synchronous head, and data after treatment are inputed in figure decompress(ion) and reconstruction circuit; Figure decompress(ion) and reconstruction circuit to the data that receive decompress, image reconstruction process, and show by LCD display, realize the reception of view data.
2. underwater picture transmitting device according to claim 1, it is characterized in that: described IMAQ and compressor circuit (2) and image decompression and reconstruction circuit (11) are made up of ARM microprocessor, ARM microprocessor is connected with LCD display (12) with underwater camera head (1) by data wire, control line, and ARM microprocessor is also connected with SDRAM memory and NANDFLASH memory by data wire, address wire and control line;
Described chnnel coding and modulation circuit (3) and demodulation and channel decoding circuit (10) are made up of DSP microprocessor, and DSP microprocessor is connected by data wire, holding wire and control line with ARM microprocessor, to realize data transmission and reception; DSP microprocessor is connected with FLASH memory and is connected with A/D modular converter (9) with D/A modular converter (4).
3. underwater picture transmitting device according to claim 2, it is characterized in that: described ARM microprocessor adopts the chip that model is S3C6410, DSP microprocessor adopts the chip that model is TMS320C6713, ARM microprocessor is connected as data wire by UART serial line interface with DSP microprocessor, to realize the transmitting-receiving of data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002997.9U CN205265852U (en) | 2016-01-05 | 2016-01-05 | Image transmission under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002997.9U CN205265852U (en) | 2016-01-05 | 2016-01-05 | Image transmission under water |
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| CN205265852U true CN205265852U (en) | 2016-05-25 |
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| CN201620002997.9U Expired - Fee Related CN205265852U (en) | 2016-01-05 | 2016-01-05 | Image transmission under water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186752A (en) * | 2018-09-22 | 2019-01-11 | 天津大学 | Underwater sound signal acquisition, transmission and detection system based on graphics processor |
| CN109587443A (en) * | 2018-10-18 | 2019-04-05 | 杭州瑞利科技有限公司 | A kind of optics fish finding and image delivering system and method |
-
2016
- 2016-01-05 CN CN201620002997.9U patent/CN205265852U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186752A (en) * | 2018-09-22 | 2019-01-11 | 天津大学 | Underwater sound signal acquisition, transmission and detection system based on graphics processor |
| CN109587443A (en) * | 2018-10-18 | 2019-04-05 | 杭州瑞利科技有限公司 | A kind of optics fish finding and image delivering system and method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20210105 |