CN103825656A - Visible light communication system based on TCP/IP and method - Google Patents
Visible light communication system based on TCP/IP and method Download PDFInfo
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Abstract
The invention discloses a visible light communication system based on TCP/IP. The system comprises a transmitter and a receiver. The transmitter comprises a digital transmission unit, a light transmission unit and a light transmission module, wherein the digital transmission unit, the light transmission unit and the light transmission module are connected in turn. The receiver comprises a light receiving module, a light receiving unit and a digital receiving unit, wherein the light receiving module, the light receiving unit and the digital receiving unit are connected in turn. The system and the method, which are provided by the invention, have the advantages of high transmission power, spectrum applying preventing, electromagnetic interference preventing, safety, confidentiality and high available bandwidth, and are capable of realizing high bandwidth and high rate wireless communication access at low cost.
Description
Technical field
The invention belongs to visible light communication technical field, be specifically related to a kind of visible light communication system and method based on TCP/IP.
Background technology
In recent years, use the visible light communication system of visible ray to have stable development.Propose to adopt the visible light communication system of LED lighting source as light source.
Also propose a kind of visible light communication technology, in this technology, carried out high speed transmission information by adopting with the visually optical communication of the high-speed flicker LED of None-identified.
Visible light communication system adopts such as AM(amplitude modulation) and so on modulator approach as communication means, this is variation based on visible ray brightness.Carry out according to transmitting data (digital signal string) visible ray that modulated light source is sent especially, and using the light of modulating as visible light signal transmission.
Simultaneously, in the communication means that adopts LED as light source, conventionally adopt light transformation technology, utilize light that fluorescent material absorbs the shorter wavelength that sends of LED chip as blue light, inspire the light of longer wavelength, the light producing by excitated fluorescent powder and former chip utilizing emitted light are mixed to get white light, and white light is modulated.
In the visible light communication system that uses LED as light source, the size of can take effect transfer equipment and receiving equipment, and can reduce power consumption.Therefore, for example, as the communication system that uses mobile terminal, this communication system is useful.In the time will realizing high-speed communication by increase modulation rate, due to the response characteristic of for example LED, will be difficult to realize this high-speed communication.But by adopt balancing technique in transmitting and receiving device, and at receiving terminal narrow-band-filter, can improve modulating speed.
By transmitter and receiving equipment and organic connection of visible light communication gateway based on TCP/IP, visible light communication gateway adopts embedded platform, in embedded system, operation has TCP/IP application layer program, this program to realize data to be encoded to from Ethernet receive channel the overall process that binary data forwards.At receiving terminal, the photoelectric conversion signal of PIN photodetector, this signal can, directly by visible light communication gateway reception & disposal, convert chnnel coding to and send to Ethernet.
At present do not find domestic explanation or the report that has technology similar to the present invention, not yet collect both at home and abroad similarly data yet.
Summary of the invention
In order to overcome the defect existing in prior art, the invention provides a kind of visible light communication system and method based on TCP/IP, concrete technical scheme is as follows:
Based on a visible light communication system of TCP/IP, comprise transmitter and receiver;
Transmitter comprises the digital transmission unit, Optical Transmit Unit and the light emission component that connect successively; Wherein, light emission component comprises that one is emitting led, and digital transmission unit comprises the transmitting ethernet controller, transmit signal processor and the D/A converter that connect successively, and D/A converter is connected with Optical Transmit Unit;
Transmitting ethernet controller is used for receiving Ethernet data, and Ethernet data is converted to bit stream, then bit stream is sent to transmit signal processor; In bit stream, comprise chnnel coding; Transmit signal processor, for bit stream is processed, is converted to binary data by chnnel coding, and exports corresponding digital signal; D/A converter is for being converted to digital signal analog signal output; Optical Transmit Unit is for analog signal is carried out to power amplification and bias treatment, and output one unipolarity power signal is to light emission component; Light emission component is for launching visible ray according to unipolarity power signal;
Receiver comprises the optical fiber receive module, light receiving unit and the digital received unit that connect successively; Wherein, optical fiber receive module comprises a photodetector, and digital received unit comprises the A/D converter, reception signal processor and the reception ethernet controller that connect successively, and light receiving unit is connected with A/D converter;
Optical fiber receive module is used for receiving visible ray, and visible ray is converted to analog signal; Light receiving unit for analog signal is amplified successively, filtering, amplification and gain process, and analog signal after treatment is sent to A/D converter; A/D converter is for being converted to analog signal digital signal output, and this digital signal is binary data; Receive signal processor for digital signal is processed, binary data is converted to chnnel coding, and exports corresponding bit stream; Receive ethernet controller and be used for receiving bit stream, and bit stream is converted to Ethernet data output.
As prioritization scheme, transmit signal processor comprises the frame emission processing module, front end coding fifo module, coding module, back-end code fifo module, interpolation synchronizing sequence module and the NRZ code modulation module that connect successively; Wherein, frame emission processing module is connected with transmitting ethernet controller, and NRZ code modulation module is connected with D/A converter;
Frame emission processing module, for bit stream being separated to mac frame and being set up the processing of physical frame, is obtained data; Front end coding fifo module is for adopting the mode of first-in first-out to send data to coding module; Coding module is for encoding to data; Back-end code fifo module is exported the data after encoded for the mode that adopts first-in first-out; Add synchronizing sequence module and add synchronizing sequence for the data to after coding; NRZ code modulation module is for becoming NRZ by Data Modulation, output digit signals.
As prioritization scheme, receive signal processor and comprise the synchronization module, solution mediation detection module, front end decoding fifo module, decoder module, rear end decoding fifo module and the received frame processing module that connect successively; Wherein, synchronization module and solution mediation detection module are connected with A/D converter respectively, and received frame processing module is connected with reception ethernet controller;
Synchronization module is for receiving analog signal from A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous given to separate and be in harmonious proportion detection module; Separate and be in harmonious proportion detection module for receiving the analog signal from A/D converter, and separate to be in harmonious proportion according to the analog signal after synchronous and detect, obtain data; Front end decoding fifo module is for adopting the mode of first-in first-out to send data to decoder module; Decoder module is used for decoding data; Rear end decoding fifo module is for adopting the mode of first-in first-out to export through decoded data; Received frame processing module is for data being separated to physical frame and setting up the processing of mac frame, then output bit flow.
As prioritization scheme, Optical Transmit Unit comprises the power amplifier and the bias device that connect successively; Wherein, power amplifier is connected with digital transmission unit, and bias device is connected with emitting led.
As prioritization scheme, light receiving unit comprises the trans-impedance amplifier, low pass filter, base amplifier and the automatic gain controller that connect successively; Wherein, trans-impedance amplifier is connected with photodetector, and automatic gain controller is connected with digital received unit.
As prioritization scheme, optical fiber receive module also comprises filter plate and collector lens.
A visible light communication method based on TCP/IP, comprises light step of transmitting and light-receiving step:
Light step of transmitting specifically comprises:
Utilize transmitting ethernet controller to receive Ethernet data, and Ethernet data is converted to bit stream, then bit stream is sent to the processing module that transmits; In bit stream, comprise chnnel coding;
Utilize transmit signal processor to process bit stream, chnnel coding is converted to binary data, and export corresponding digital signal to D/A converter;
Utilize D/A converter that digital signal is converted to analog signal, and analog signal output is arrived to Optical Transmit Unit;
Utilize Optical Transmit Unit to carry out power amplification and bias treatment to analog signal, output one unipolarity power signal is given emitting led;
Utilize emitting led according to unipolarity power signal transmitting visible ray;
Light-receiving step specifically comprises:
Utilize optical fiber receive module to receive visible ray, and visible ray is converted to analog signal, then analog signal is sent to light receiving unit;
Utilize light receiving unit to analog signal amplify successively, filtering, amplification and gain process, and analog signal after treatment is sent to A/D converter;
Utilize A/D converter that analog signal is converted to digital signal, and output digit signals is given reception signal processor; This digital signal is binary data;
Utilize reception signal processor to process digital signal, binary data is converted to chnnel coding, and export corresponding bit stream to receiving ethernet controller;
Utilize and receive ethernet controller reception bit stream, and bit stream is converted to Ethernet data output.
As prioritization scheme, the step of utilizing transmit signal processor to process and export corresponding digital signal to bit stream is specially:
Utilize frame emission processing module to separate mac frame and set up the processing of physical frame bit stream, obtain data;
Utilize front end coding fifo module to adopt the mode of first-in first-out to send data to coding module;
Utilize coding module to encode to data;
Utilize back-end code fifo module to adopt the mode of first-in first-out to export the data after encoded;
Utilize and add synchronizing sequence module to the data interpolation synchronizing sequence after encoding;
Utilize NRZ code modulation module Data Modulation to be become to NRZ, output digit signals.
As prioritization scheme, the step of utilizing reception signal processor digital signal to be processed and exported corresponding bit stream is specially:
Utilize synchronization module to receive from the analog signal of A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous given to separate and be in harmonious proportion detection module;
Utilize and separate the analog signal of mediation detection module reception from A/D converter, and separate to be in harmonious proportion according to the analog signal after synchronous and detect, acquisition data;
Utilize front end decoding fifo module to adopt the mode of first-in first-out to send data to decoder module;
Utilize decoder module to decoding data;
Utilize rear end decoding fifo module to adopt the mode of first-in first-out to export through decoded data;
Utilize received frame processing module to separate physical frame and set up the processing of mac frame data, then output bit flow.
Compared with prior art, the present invention has following beneficial effect:
(1) transmitting power is high;
(2) without application frequency spectrum;
(3) without electromagnetic interference;
(4) safe and secret;
(5) available bandwidth is high;
(6) can realize with lower cost the radio communication access of high bandwidth and high speed rate.
Accompanying drawing explanation
Fig. 1 is the block diagram of the visible light communication system based on TCP/IP;
Fig. 2 is the flow chart of the course of work of transmitter;
Fig. 3 is the flow chart of the course of work of receiver;
Fig. 4 is the flow chart of the course of work of transmit signal processor;
Fig. 5 is the flow chart that receives the course of work of signal processor;
Fig. 6 is for explaining the balanced front and back channel amplitude-frequency response according to the first embodiment;
Fig. 7 is the fluorescent material that uses the luminous excitating surface of blue-ray LED, obtains the required white light LEDs spectrum of naked eyes thereby produce gold-tinted;
Fig. 8 is the flow chart of light step of transmitting;
Fig. 9 is the flow chart of light-receiving step.
Embodiment
Core concept of the present invention is, provides a kind of based on the high-power visible light communication system of TCP/IP and method thereof, and Fig. 7 is the fluorescent material that uses the luminous excitating surface of blue-ray LED, obtains the required white light LEDs spectrum of naked eyes thereby produce gold-tinted.As shown in Figure 7, this technology has advantages of that cost is low, it is simple to make, easily industrialization.The only incoherent light that illuminating LED sends, can only adopt intensity modulated, by the weak transmission of information of light intensity, do not adopt transmitting terminal and receiving terminal preequalization and receiving terminal narrow-band-filter etc. under the condition of technology, only 2 ~ 3 Mbps of the modulation rate upper limit that this type of illuminative high-power LED can use.Fig. 6 is for adopting balanced front and back channel amplitude-frequency response, and before actual measurement is balanced, channel three dB bandwidth is about 15MHz, brings up to about 80MHz after equilibrium, can support the highest 150Mbps modulating speed.
Describe the present invention below in conjunction with accompanying drawing in detail in the mode of embodiment.
Embodiment 1:
As shown in Figure 1, based on the visible light communication system of TCP/IP, comprise transmitter and receiver.
As illustrated in fig. 1 and 2, transmitter comprises the digital transmission unit, Optical Transmit Unit and the light emission component that connect successively; Wherein, light emission component comprises that one is emitting led, and digital transmission unit comprises the transmitting ethernet controller, transmit signal processor and the D/A converter that connect successively, and D/A converter is connected with Optical Transmit Unit.In the present embodiment, the emitting led LED that is 4 rated power are 3W is in series.
Described transmitting ethernet controller is used for receiving Ethernet data, and described Ethernet data is converted to bit stream, then bit stream is sent to described transmit signal processor; In described bit stream, comprise chnnel coding; Described transmit signal processor, for bit stream is processed, is converted to binary data by chnnel coding, and exports corresponding digital signal; Described D/A converter is for being converted to digital signal analog signal output; Described Optical Transmit Unit is for analog signal is carried out to power amplification and bias treatment, and output one unipolarity power signal is given described light emission component; Described light emission component is for launching visible ray according to described unipolarity power signal.
In the present embodiment, Optical Transmit Unit comprises the power amplifier and the bias device that connect successively; Wherein, power amplifier is connected with digital transmission unit, and bias device is connected with emitting led.In the present embodiment, for bias device (Bias Tee) loads a direct current offset signal, bias device is carried out bias treatment according to this direct current biasing signal to the signal of input.
As shown in figures 1 and 3, receiver comprises the optical fiber receive module, light receiving unit and the digital received unit that connect successively; Wherein, optical fiber receive module comprises a photodetector, and digital received unit comprises the A/D converter, reception signal processor and the reception ethernet controller that connect successively, and light receiving unit is connected with A/D converter.In the present embodiment, optical fiber receive module also comprises filter plate and collector lens, and before photodetector receives visible ray, filter plate carries out filtering to visible ray, and collector lens carries out optically focused to filtered visible ray again.
Described optical fiber receive module is used for receiving described visible ray, and described visible ray is converted to analog signal; Described light receiving unit for analog signal is amplified successively, filtering, amplification and gain process, and analog signal after treatment is sent to described A/D converter; Described A/D converter is for being converted to analog signal digital signal output, and this digital signal is binary data; Described reception signal processor, for digital signal is processed, is converted to chnnel coding by binary data, and exports corresponding bit stream; Described reception ethernet controller is used for receiving bit stream, and bit stream is converted to Ethernet data output.
In the present embodiment, light receiving unit comprises the trans-impedance amplifier, low pass filter, base amplifier and the automatic gain controller that connect successively; Wherein, trans-impedance amplifier is connected with photodetector, and automatic gain controller is connected with digital received unit.
As shown in Figure 4, transmit signal processor comprises the frame emission processing module, front end coding fifo module, coding module, back-end code fifo module, interpolation synchronizing sequence module and the NRZ code modulation module that connect successively; Wherein, frame emission processing module is connected with transmitting ethernet controller, and NRZ code modulation module is connected with D/A converter.
In the present embodiment, transmit signal processor is a conversion chip FPGA, and operation TCP/IP application layer program in this chip, for being converted to binary data by the chnnel coding receiving from Ethernet.
Frame emission processing module, for bit stream being separated to mac frame and being set up the processing of physical frame, is obtained data; In the bit stream that frame emission processing module receives, comprise chnnel coding to be converted.Front end coding fifo module is for adopting the mode of first-in first-out to send data to coding module; Coding module is for encoding to data; Back-end code fifo module is exported the data after encoded for the mode that adopts first-in first-out; Add synchronizing sequence module and add synchronizing sequence for the data to after coding; NRZ code modulation module is for becoming NRZ by Data Modulation, output digit signals.The digital signal of this output is the binary data obtaining after conversion.
As shown in Figure 5, receive signal processor and comprise the synchronization module, solution mediation detection module, front end decoding fifo module, decoder module, rear end decoding fifo module and the received frame processing module that connect successively; Wherein, synchronization module and solution mediation detection module are connected with A/D converter respectively, and received frame processing module is connected with reception ethernet controller.
In the present embodiment, receiving signal processor is a conversion chip FPGA, and operation TCP/IP application layer program in this chip, for being converted to chnnel coding by the binary data receiving.
Synchronization module is for receiving analog signal from A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous given to separate and be in harmonious proportion detection module; Separate and be in harmonious proportion detection module for receiving the analog signal from A/D converter, and separate to be in harmonious proportion according to the analog signal after synchronous and detect, obtain data.Wherein, the analog signal of being exported by A/D converter is binary data to be converted.Front end decoding fifo module is for adopting the mode of first-in first-out to send data to decoder module; Decoder module is used for decoding data; Rear end decoding fifo module is for adopting the mode of first-in first-out to export through decoded data; Received frame processing module is for data being separated to physical frame and setting up the processing of mac frame, then output bit flow.In the bit stream of output, comprise the chnnel coding obtaining after conversion.
Visible light communication method based on TCP/IP, comprises light step of transmitting and light-receiving step:
As shown in Figure 8, light step of transmitting specifically comprises:
Utilize transmitting ethernet controller to receive Ethernet data, and Ethernet data is converted to bit stream, then bit stream is sent to the processing module that transmits; In bit stream, comprise chnnel coding;
Utilize transmit signal processor to process bit stream, chnnel coding is converted to binary data, and export corresponding digital signal to D/A converter;
Utilize D/A converter that digital signal is converted to analog signal, and analog signal output is arrived to Optical Transmit Unit;
Utilize Optical Transmit Unit to carry out power amplification and bias treatment to analog signal, output one unipolarity power signal is given emitting led;
Utilize emitting led according to unipolarity power signal transmitting visible ray.
As shown in Figure 9, light-receiving step specifically comprises:
Utilize optical fiber receive module to receive visible ray, and visible ray is converted to analog signal, then analog signal is sent to light receiving unit;
Utilize light receiving unit to analog signal amplify successively, filtering, secondary amplifies and gain process, and analog signal after treatment sent to A/D converter;
Utilize A/D converter that analog signal is converted to digital signal, and output digit signals is given reception signal processor; This digital signal is binary data;
Utilize reception signal processor to process digital signal, binary data is converted to chnnel coding, and export corresponding bit stream to receiving ethernet controller;
Utilize and receive ethernet controller reception bit stream, and bit stream is converted to Ethernet data output.
In the present embodiment, the step of utilizing transmit signal processor to process and export corresponding digital signal to bit stream is specially:
Utilize frame emission processing module to separate mac frame and set up the processing of physical frame bit stream, obtain data;
Utilize front end coding fifo module to adopt the mode of first-in first-out to send data to coding module;
Utilize coding module to encode to data, this coding adopts Manchester's code or 8B10B coding;
Utilize back-end code fifo module to adopt the mode of first-in first-out to export the data after encoded;
Utilize and add synchronizing sequence module to the data interpolation synchronizing sequence after encoding;
Utilize NRZ code modulation module Data Modulation to be become to NRZ, output digit signals.
In the present embodiment, the step of utilizing reception signal processor digital signal to be processed and exported corresponding bit stream is specially:
Utilize synchronization module to receive from the analog signal of A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous given to separate and be in harmonious proportion detection module;
Utilize and separate the analog signal of mediation detection module reception from A/D converter, and separate to be in harmonious proportion according to the analog signal after synchronous and detect, acquisition data;
Utilize front end decoding fifo module to adopt the mode of first-in first-out to send data to decoder module;
Utilize decoder module to decoding data;
Utilize rear end decoding fifo module to adopt the mode of first-in first-out to export through decoded data;
Utilize received frame processing module to separate physical frame and set up the processing of mac frame data, then output bit flow.
Disclosed is above only the application's a specific embodiment, but the not limited thereto the changes that any person skilled in the art can think of of the application all should drop in the application's protection range.
Claims (9)
1. the visible light communication system based on TCP/IP, is characterized in that, comprises transmitter and receiver;
Described transmitter comprises the digital transmission unit, Optical Transmit Unit and the light emission component that connect successively; Wherein, described light emission component comprises that one is emitting led, and described digital transmission unit comprises the transmitting ethernet controller, transmit signal processor and the D/A converter that connect successively, and described D/A converter is connected with described Optical Transmit Unit;
Described transmitting ethernet controller is used for receiving Ethernet data, and described Ethernet data is converted to bit stream, then bit stream is sent to described transmit signal processor; In described bit stream, comprise chnnel coding; Described transmit signal processor, for bit stream is processed, is converted to binary data by chnnel coding, and exports corresponding digital signal; Described D/A converter is for being converted to digital signal analog signal output; Described Optical Transmit Unit is for analog signal is carried out to power amplification and bias treatment, and output one unipolarity power signal is given described light emission component; Described light emission component is for launching visible ray according to described unipolarity power signal;
Described receiver comprises the optical fiber receive module, light receiving unit and the digital received unit that connect successively; Wherein, described optical fiber receive module comprises a photodetector, and described digital received unit comprises the A/D converter, reception signal processor and the reception ethernet controller that connect successively, and described light receiving unit is connected with described A/D converter;
Described optical fiber receive module is used for receiving described visible ray, and described visible ray is converted to analog signal; Described light receiving unit for analog signal is amplified successively, filtering, amplification and gain process, and analog signal after treatment is sent to described A/D converter; Described A/D converter is for being converted to analog signal digital signal output, and this digital signal is binary data; Described reception signal processor, for digital signal is processed, is converted to chnnel coding by binary data, and exports corresponding bit stream; Described reception ethernet controller is used for receiving bit stream, and bit stream is converted to Ethernet data output.
2. the visible light communication system based on TCP/IP according to claim 1, it is characterized in that, described transmit signal processor comprises the frame emission processing module, front end coding fifo module, coding module, back-end code fifo module, interpolation synchronizing sequence module and the NRZ code modulation module that connect successively; Wherein, described frame emission processing module is connected with described transmitting ethernet controller, and described NRZ code modulation module is connected with described D/A converter;
Described frame emission processing module, for bit stream being separated to mac frame and being set up the processing of physical frame, is obtained data; Described front end coding fifo module is for adopting the mode of first-in first-out to send data to coding module; Described coding module is for encoding to data; Described back-end code fifo module is exported the data after encoded for the mode that adopts first-in first-out; Described interpolation synchronizing sequence module is added synchronizing sequence for the data to after coding; Described NRZ code modulation module is for becoming NRZ by Data Modulation, output digit signals.
3. the visible light communication system based on TCP/IP according to claim 1, it is characterized in that, described reception signal processor comprises the synchronization module, solution mediation detection module, front end decoding fifo module, decoder module, rear end decoding fifo module and the received frame processing module that connect successively; Wherein, described synchronization module and described solution mediation detection module are connected with described A/D converter respectively, and described received frame processing module is connected with described reception ethernet controller;
Described synchronization module is for receiving analog signal from described A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous is in harmonious proportion detection module to described solution; Described solution is in harmonious proportion detection module for receiving the analog signal from described A/D converter, and separates to be in harmonious proportion according to the analog signal after synchronous and detect, and obtains data; Described front end decoding fifo module is for adopting the mode of first-in first-out to send data to decoder module; Described decoder module is used for decoding data; Described rear end decoding fifo module is for adopting the mode of first-in first-out to export through decoded data; Described received frame processing module is for data being separated to physical frame and setting up the processing of mac frame, then output bit flow.
4. the visible light communication system based on TCP/IP according to claim 1, is characterized in that, described Optical Transmit Unit comprises the power amplifier and the bias device that connect successively; Wherein, described power amplifier is connected with described digital transmission unit, described bias device and described emitting led connection.
5. the visible light communication system based on TCP/IP according to claim 1, is characterized in that, described light receiving unit comprises the trans-impedance amplifier, low pass filter, base amplifier and the automatic gain controller that connect successively; Wherein, described trans-impedance amplifier is connected with described photodetector, and described automatic gain controller is connected with described digital received unit.
6. the visible light communication system based on TCP/IP according to claim 1, is characterized in that, described optical fiber receive module also comprises filter plate and collector lens.
7. the visible light communication method based on TCP/IP, utilizes the visible light communication system based on TCP/IP as claimed in claim 1 to communicate, and it is characterized in that, comprises light step of transmitting and light-receiving step:
Described smooth step of transmitting specifically comprises:
Utilize transmitting ethernet controller to receive Ethernet data, and described Ethernet data is converted to bit stream, then bit stream is sent to the processing module that transmits; In described bit stream, comprise chnnel coding;
Utilize transmit signal processor to process bit stream, chnnel coding is converted to binary data, and export corresponding digital signal to D/A converter;
Utilize D/A converter that digital signal is converted to analog signal, and analog signal output is arrived to Optical Transmit Unit;
Utilize Optical Transmit Unit to carry out power amplification and bias treatment to analog signal, output one unipolarity power signal is given emitting led;
Utilize emitting led according to described unipolarity power signal transmitting visible ray;
Described light-receiving step specifically comprises:
Utilize optical fiber receive module to receive described visible ray, and described visible ray is converted to analog signal, then analog signal is sent to light receiving unit;
Utilize light receiving unit to analog signal amplify successively, filtering, amplification and gain process, and analog signal after treatment is sent to described A/D converter;
Utilize A/D converter that analog signal is converted to digital signal, and output digit signals is given described reception signal processor; This digital signal is binary data;
Utilize reception signal processor to process digital signal, binary data is converted to chnnel coding, and export corresponding bit stream to described reception ethernet controller;
Utilize and receive ethernet controller reception bit stream, and bit stream is converted to Ethernet data output.
8. the visible light communication method based on TCP/IP according to claim 7, is characterized in that, the step of utilizing transmit signal processor to process and export corresponding digital signal to bit stream is specially:
Utilize frame emission processing module to separate mac frame and set up the processing of physical frame bit stream, obtain data;
Utilize front end coding fifo module to adopt the mode of first-in first-out to send data to coding module;
Utilize coding module to encode to data;
Utilize back-end code fifo module to adopt the mode of first-in first-out to export the data after encoded;
Utilize and add synchronizing sequence module to the data interpolation synchronizing sequence after encoding;
Utilize NRZ code modulation module Data Modulation to be become to NRZ, output digit signals.
9. the visible light communication method based on TCP/IP according to claim 7, is characterized in that, the step of utilizing reception signal processor digital signal to be processed and exported corresponding bit stream is specially:
Utilize synchronization module to receive from the analog signal of described A/D converter, and analog signal is synchronously processed, then the analog signal of output after synchronous is in harmonious proportion detection module to described solution;
Utilize and separate the analog signal of mediation detection module reception from described A/D converter, and separate to be in harmonious proportion according to the analog signal after synchronous and detect, acquisition data;
Utilize front end decoding fifo module to adopt the mode of first-in first-out to send data to decoder module;
Utilize decoder module to decoding data;
Utilize rear end decoding fifo module to adopt the mode of first-in first-out to export through decoded data;
Utilize received frame processing module to separate physical frame and set up the processing of mac frame data, then output bit flow.
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| CN108242954A (en) * | 2017-12-14 | 2018-07-03 | 中国空间技术研究院 | A kind of visible light communication system and method applied to data transmission in spacecraft module |
| CN110474692A (en) * | 2019-08-28 | 2019-11-19 | 深圳市科楠科技开发有限公司 | A kind of optical communication equipment, optical communication system, data transmission method and storage medium |
| CN111064511A (en) * | 2019-11-29 | 2020-04-24 | 徐州智谷光频产业研究院有限公司 | Visible light communication video telephone |
| CN111082865A (en) * | 2019-11-29 | 2020-04-28 | 徐州智谷光频产业研究院有限公司 | Novel point-to-point visible light communication transceiver of wireless network bridge |
| WO2020181433A1 (en) * | 2019-03-08 | 2020-09-17 | Oppo广东移动通信有限公司 | Free space optical communications method, and transmitter and receiver |
| CN114019618A (en) * | 2021-10-26 | 2022-02-08 | 中航光电科技股份有限公司 | Ethernet changes wireless optical transmission subassembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090353A (en) * | 2007-07-17 | 2007-12-19 | 中南大学 | LED display screen data communication equipment and method based on embedded Ethernet technology |
| CN101169903A (en) * | 2007-10-19 | 2008-04-30 | 黄辉先 | Intelligent traffic control system for controlling access connection traffic flow |
| CN102324974A (en) * | 2011-07-08 | 2012-01-18 | 北京邮电大学 | A kind of visible light communication system and device thereof based on the OCDMA technology |
| CN102710329A (en) * | 2012-05-09 | 2012-10-03 | 中国人民解放军信息工程大学 | Method and system for transparently transmitting full-IP (internet protocol) visible light data |
-
2013
- 2013-12-10 CN CN201310663171.8A patent/CN103825656A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090353A (en) * | 2007-07-17 | 2007-12-19 | 中南大学 | LED display screen data communication equipment and method based on embedded Ethernet technology |
| CN101169903A (en) * | 2007-10-19 | 2008-04-30 | 黄辉先 | Intelligent traffic control system for controlling access connection traffic flow |
| CN102324974A (en) * | 2011-07-08 | 2012-01-18 | 北京邮电大学 | A kind of visible light communication system and device thereof based on the OCDMA technology |
| CN102710329A (en) * | 2012-05-09 | 2012-10-03 | 中国人民解放军信息工程大学 | Method and system for transparently transmitting full-IP (internet protocol) visible light data |
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| CN104038285A (en) * | 2014-06-16 | 2014-09-10 | 上海航天电子通讯设备研究所 | TCP/IP (Transmission Control Protocol/Internet Protocol) based indoor visible light communication node and two-way communication system |
| CN104022824A (en) * | 2014-06-21 | 2014-09-03 | 滁州惠智科技服务有限公司 | LED street lamp system with communication function |
| CN104104439A (en) * | 2014-07-15 | 2014-10-15 | 东南大学 | Examination listening broadcasting system based on visible light communication |
| CN104104448A (en) * | 2014-07-16 | 2014-10-15 | 上海航天电子通讯设备研究所 | Visible light communication receiving and transmitting integrated device based on Ethernet |
| CN104901739A (en) * | 2015-05-11 | 2015-09-09 | 南昌大学 | Multilingual audio commentary device and method thereof based on visible light communication technology |
| CN105262547A (en) * | 2015-10-30 | 2016-01-20 | 上海航天测控通信研究所 | Visible light communication reception method and device based on audio interface |
| CN105406916A (en) * | 2015-12-31 | 2016-03-16 | 中广核工程有限公司 | Communication terminal, visible light communication user external connection device and communication method thereof |
| CN106059667A (en) * | 2016-08-09 | 2016-10-26 | 浪潮电子信息产业股份有限公司 | Visible light-based communication method and display equipment thereof |
| CN107071991A (en) * | 2016-12-13 | 2017-08-18 | 广州市浩洋电子股份有限公司 | A kind of stage lamp control system and control method based on visible light communication |
| WO2018107809A1 (en) * | 2016-12-13 | 2018-06-21 | 广州市浩洋电子股份有限公司 | Stage light control system based on visible light communication, and control method |
| CN108242954A (en) * | 2017-12-14 | 2018-07-03 | 中国空间技术研究院 | A kind of visible light communication system and method applied to data transmission in spacecraft module |
| WO2020181433A1 (en) * | 2019-03-08 | 2020-09-17 | Oppo广东移动通信有限公司 | Free space optical communications method, and transmitter and receiver |
| US11799545B2 (en) | 2019-03-08 | 2023-10-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Free space optical communications method, and transmitter and receiver |
| CN110474692A (en) * | 2019-08-28 | 2019-11-19 | 深圳市科楠科技开发有限公司 | A kind of optical communication equipment, optical communication system, data transmission method and storage medium |
| CN110474692B (en) * | 2019-08-28 | 2021-02-26 | 深圳市科楠科技开发有限公司 | Optical communication device, optical communication system, data transmission method and storage medium |
| CN111064511A (en) * | 2019-11-29 | 2020-04-24 | 徐州智谷光频产业研究院有限公司 | Visible light communication video telephone |
| CN111082865A (en) * | 2019-11-29 | 2020-04-28 | 徐州智谷光频产业研究院有限公司 | Novel point-to-point visible light communication transceiver of wireless network bridge |
| CN111064511B (en) * | 2019-11-29 | 2022-05-17 | 徐州智谷光频产业研究院有限公司 | Visible light communication video telephone |
| CN114019618A (en) * | 2021-10-26 | 2022-02-08 | 中航光电科技股份有限公司 | Ethernet changes wireless optical transmission subassembly |
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