CN102723986A - Underwater light-emitting diode (LED) communication system based on universal serial bus (USB) interface - Google Patents
Underwater light-emitting diode (LED) communication system based on universal serial bus (USB) interface Download PDFInfo
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- CN102723986A CN102723986A CN2012102171585A CN201210217158A CN102723986A CN 102723986 A CN102723986 A CN 102723986A CN 2012102171585 A CN2012102171585 A CN 2012102171585A CN 201210217158 A CN201210217158 A CN 201210217158A CN 102723986 A CN102723986 A CN 102723986A
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Abstract
The invention discloses an underwater light-emitting diode (LED) communication system based on a universal serial bus (USB) interface, which comprises external communication equipment, the USB interface, a pulse encoding circuit, an LED driving circuit, an LED device, a photoelectric detector, a signal amplifying circuit and a pulse decoding circuit. According to the underwater LED communication system based on the USB interface, high-speed communication can be realized underwater, and the anti-interference capability is strong.
Description
Technical field
The present invention relates to a kind of USB interface-based communication system of LED under water.
Background technology
Wireless technology develop rapidly, Wireless Network Applications are universal day by day, ubiquitous, high-quality radio communication that people are desirable to provide, and the increasing demand that high bandwidth support, service quality are guaranteed increases.Compare with wire access technology, wireless access has deployment speed soon, does not need cable and optical cable laying, flexible, the fast advantage of market startup of networking, and wireless access is being brought into play important effect as a kind of important means of communication always.
Subsurface communication, especially deep-sea, ocean communication are the important topics the communications field in always, and that how can realize under water communicating by letter is unimpeded and free, realization under water tell communication, be important instantly problem.See that light underwater wireless communication system can realize with present underwater sound wave communication system having complementary advantages.At present; Visible light underwater wireless communication system can realize the underwater wireless communication of short-distance and medium-distance; Its anti-multipath effect capability is strong, transport tape is wide, transmission rate is high; While visible light underwater wireless communication system also has the little good portability of equipment volume, characteristics such as manufacturing process is simple, power consumption is little, long service life, therefore has broad application prospects in the communication under water.Believe that in future along with the development of technology, the visible light wireless communication system also can be used for the subsurface communication of long distance under water.
The develop rapidly of optical communication and Primary Component thereof; Make visible light communication become whole world research focus; And the visible light access technology will become the hot technology of information technology; It need not the demand frequency resource, does not receive electromagnetic interference, and environmental protection can be used as the access technology of the WLAN or the Wireless Personal Network at terminal.
Summary of the invention
Technical problem to be solved by this invention provides and a kind ofly can realize high-speed communication under water, the USB interface-based communication system of LED under water that antijamming capability is strong.
The present invention adopts following technical scheme for solving the problems of the technologies described above: the present invention has designed a kind of USB interface-based communication system of LED under water; Comprise external communication device, USB interface, pulse moder, led drive circuit, LED device, photodetector, signal amplification circuit and pulse decoding circuit, wherein:
The output of said USB interface connects the input of pulse moder, and USB interface receives the baseband signal of external communication device, and said baseband signal is transferred to pulse moder;
The output of said pulse moder connects the input of led drive circuit, and pulse moder carries out pulse code with baseband signal to be handled, and converts the signal of telecommunication into, and transfers to led drive circuit;
The output of said led drive circuit connects the input of LED device, and led drive circuit carries out bias treatment with above-said current signal, produces coupled electrical signal, and said coupled electrical signal is transferred to the LED device, and the driving LED device is luminous;
Said LED device is used for converting coupled electrical signal to light signal, through Wireless transmission mode with said optical signal transmission to photodetector;
The output of said photodetector connects the input of signal amplification circuit, and photodetector receives above-mentioned light signal, and transfers to signal amplification circuit after converting said light signal into the signal of telecommunication;
The output of said signal amplification circuit connects the input of pulse decoding circuit, and signal amplification circuit carries out power amplification with above-said current signal, and the signal of telecommunication after the power amplification is transferred to the pulse decoding circuit;
The output of said pulse decoding circuit connects the input of external communication device, and the signal of telecommunication of pulse decoding circuit after with above-mentioned power amplification transfers baseband signal to, transfers to external communication device through USB interface.
As a kind of optimizing structure of the present invention: said LED device is selected white light LED part or blue-ray LED device for use.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
The USB interface-based communication system of LED under water that the present invention designed can realize underwater high-speed communication, and antijamming capability is strong.
Description of drawings
Fig. 1 is the structured flowchart of the USB interface-based communication system of LED under water that the present invention designed.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is done further detailed description:
As shown in Figure 1; The present invention has designed a kind of USB interface-based communication system of LED under water; Comprise external communication device, USB interface, pulse moder, led drive circuit, LED device, photodetector, signal amplification circuit and pulse decoding circuit, wherein:
The output of said USB interface connects the input of pulse moder, and USB interface receives the baseband signal of external communication device, and said baseband signal is transferred to pulse moder;
The output of said pulse moder connects the input of led drive circuit, and pulse moder carries out pulse code with baseband signal to be handled, and converts the signal of telecommunication into, and transfers to led drive circuit;
The output of said led drive circuit connects the input of LED device, and led drive circuit carries out bias treatment with above-said current signal, produces coupled electrical signal, and said coupled electrical signal is transferred to the LED device, and the driving LED device is luminous;
Said LED device is used for converting coupled electrical signal to light signal, through Wireless transmission mode with said optical signal transmission to photodetector;
The output of said photodetector connects the input of signal amplification circuit, and photodetector receives above-mentioned light signal, and transfers to signal amplification circuit after converting said light signal into the signal of telecommunication;
The output of said signal amplification circuit connects the input of pulse decoding circuit, and signal amplification circuit carries out power amplification with above-said current signal, and the signal of telecommunication after the power amplification is transferred to the pulse decoding circuit;
The output of said pulse decoding circuit connects the input of external communication device, and the signal of telecommunication of pulse decoding circuit after with above-mentioned power amplification transfers baseband signal to, transfers to external communication device through USB interface.
As a kind of optimizing structure of the present invention: said LED device is selected white light LED part or blue-ray LED device for use.
In specific embodiment, the said USB interface-based communication system of LED under water is arranged in the water-tight device, also can be fixed under water, as fixing permanent communication equipment.
Claims (2)
1. USB interface-based communication system of LED under water is characterized in that: comprise external communication device, USB interface, pulse moder, led drive circuit, LED device, photodetector, signal amplification circuit and pulse decoding circuit, wherein:
The output of said USB interface connects the input of pulse moder, and USB interface receives the baseband signal of external communication device, and said baseband signal is transferred to pulse moder;
The output of said pulse moder connects the input of led drive circuit, and pulse moder carries out pulse code with baseband signal to be handled, and converts the signal of telecommunication into, and transfers to led drive circuit;
The output of said led drive circuit connects the input of LED device, and led drive circuit carries out bias treatment with above-said current signal, produces coupled electrical signal, and said coupled electrical signal is transferred to the LED device, and the driving LED device is luminous;
Said LED device is used for converting coupled electrical signal to light signal, through Wireless transmission mode with said optical signal transmission to photodetector;
The output of said photodetector connects the input of signal amplification circuit, and photodetector receives above-mentioned light signal, and transfers to signal amplification circuit after converting said light signal into the signal of telecommunication;
The output of said signal amplification circuit connects the input of pulse decoding circuit, and signal amplification circuit carries out power amplification with above-said current signal, and the signal of telecommunication after the power amplification is transferred to the pulse decoding circuit;
The output of said pulse decoding circuit connects the input of external communication device, and the signal of telecommunication of pulse decoding circuit after with above-mentioned power amplification transfers baseband signal to, transfers to external communication device through USB interface.
2. the USB interface-based communication system of LED under water according to claim 1, it is characterized in that: said LED device is selected white light LED part or blue-ray LED device for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102171585A CN102723986A (en) | 2012-06-28 | 2012-06-28 | Underwater light-emitting diode (LED) communication system based on universal serial bus (USB) interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102171585A CN102723986A (en) | 2012-06-28 | 2012-06-28 | Underwater light-emitting diode (LED) communication system based on universal serial bus (USB) interface |
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| Publication Number | Publication Date |
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| CN102723986A true CN102723986A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102171585A Withdrawn CN102723986A (en) | 2012-06-28 | 2012-06-28 | Underwater light-emitting diode (LED) communication system based on universal serial bus (USB) interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485995A (en) * | 2014-12-15 | 2015-04-01 | 昆山国显光电有限公司 | Light fidelity access device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112446A1 (en) * | 2004-05-17 | 2005-11-24 | Sanyo Electric Co., Ltd. | Image processing device |
| CN102289634A (en) * | 2011-08-31 | 2011-12-21 | 北京航空航天大学 | Restrictive region permission authentication device based on visible optical communication and file encryption method |
| CN202257581U (en) * | 2011-08-31 | 2012-05-30 | 北京航空航天大学 | Device for carrying out authority authentication on defined areas based on visible-light communication |
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2012
- 2012-06-28 CN CN2012102171585A patent/CN102723986A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112446A1 (en) * | 2004-05-17 | 2005-11-24 | Sanyo Electric Co., Ltd. | Image processing device |
| CN102289634A (en) * | 2011-08-31 | 2011-12-21 | 北京航空航天大学 | Restrictive region permission authentication device based on visible optical communication and file encryption method |
| CN202257581U (en) * | 2011-08-31 | 2012-05-30 | 北京航空航天大学 | Device for carrying out authority authentication on defined areas based on visible-light communication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485995A (en) * | 2014-12-15 | 2015-04-01 | 昆山国显光电有限公司 | Light fidelity access device |
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20121010 |