CN116865857A - Internet surfing system based on LED visible light communication - Google Patents

Internet surfing system based on LED visible light communication Download PDF

Info

Publication number
CN116865857A
CN116865857A CN202311011606.0A CN202311011606A CN116865857A CN 116865857 A CN116865857 A CN 116865857A CN 202311011606 A CN202311011606 A CN 202311011606A CN 116865857 A CN116865857 A CN 116865857A
Authority
CN
China
Prior art keywords
led
surfing system
internet surfing
lifi
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311011606.0A
Other languages
Chinese (zh)
Inventor
徐璐
朱志扬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changshu Leifa Optoelectronic Technology Co ltd
Original Assignee
Changshu Leifa Optoelectronic Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changshu Leifa Optoelectronic Technology Co ltd filed Critical Changshu Leifa Optoelectronic Technology Co ltd
Priority to CN202311011606.0A priority Critical patent/CN116865857A/en
Publication of CN116865857A publication Critical patent/CN116865857A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/502—LED transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability

Abstract

The invention discloses an Internet surfing system based on LED visible light communication, which relates to the technical field of visible light communication and comprises the following components: the system comprises a photoelectric converter, a LiFi internet surfing system and a WiFi internet surfing system; the photoelectric converter is used for converting the optical signal into a digital signal; the LiFi surfing system comprises an LED driving modulation circuit, an LED light source module, a network card and a photosensitive sensor, wherein the LED driving modulation circuit is used for controlling high-frequency flicker of the LED light source module, and the photosensitive sensor is used for sensing the high-frequency flicker of the LED light source module; the WiFi Internet surfing system and the LiFi Internet surfing system are arranged in parallel, and the WiFi Internet surfing system and the LiFi Internet surfing system can be mutually compensated to ensure the stability of network signals. The invention can combine LiFi and WiFi, make the two compensate each other, cooperate to provide the stable network signal, can carry on the high-speed, high security, not interfered by electromagnetic signal on the Internet through LiFi, can realize the stable on the Internet continuously.

Description

Internet surfing system based on LED visible light communication
Technical Field
The invention relates to the technical field of visible light communication, in particular to an internet surfing system based on LED visible light communication.
Background
With the rapid development of industrial internet and intelligent manufacturing, communication means become the underlying technology restricting the development, which not only requires high speed and stability, but also puts higher demands on security requirements in communication.
In the information field, the wireless optical communication can well solve the problem of current information safety by the characteristics of unique physical characteristics, linear transmission, high frequency and the like. Meanwhile, the characteristics of large bandwidth, low time delay, high reliability, low cost and the like enable the wireless optical communication technology to be applicable to more scenes.
In response to the precision manufacturing requirements of high-end manufacturing industry, the electromagnetic interference-free characteristic of LiFi is the only feasible wireless communication control means at present. The communication control is immune to electromagnetic interference, and interference of the communication itself to other electronic equipment is avoided.
LiFi is a key technology for the next generation of communication technology (6G), and visible light communication is based on the light source brightness (0/1) characteristics to transfer information. Because the optical frequency is high, the optical communication system can embody the advantages of high speed, high safety, no electromagnetic signal interference and the like of optical communication.
However, the signaling of LiFi requires that the device cannot leave the range of the light source, which can result in signal interruption once the device is blocked or the light source is turned off. This presents a certain inconvenience to our use, as we cannot switch between different rooms as freely as with WiFi. So how to stably access the internet by using the LiFi communication technology is a current problem.
Accordingly, in view of the above-mentioned technical problems, it is necessary to provide a surfing system based on LED visible light communication.
Disclosure of Invention
The invention aims to provide an Internet surfing system based on LED visible light communication, which can realize stable Internet surfing through LiFi communication technology.
To achieve the above object, an embodiment of the present invention provides an internet surfing system based on LED visible light communication, including: the system comprises a photoelectric converter, a LiFi internet surfing system and a WiFi internet surfing system;
the photoelectric converter is used for converting the optical signal into a digital signal;
the LiFi surfing system comprises an LED driving modulation circuit, an LED light source module, a network card and a photosensitive sensor, wherein the LED driving modulation circuit is used for controlling high-frequency flicker of the LED light source module, and the photosensitive sensor is used for sensing the high-frequency flicker of the LED light source module;
the WiFi Internet surfing system and the LiFi Internet surfing system are arranged in parallel, and the WiFi Internet surfing system and the LiFi Internet surfing system can be mutually compensated to ensure the stability of network signals.
In one or more embodiments of the invention, the optoelectronic converter has at least two RJ45 electrical ports and at least two SC/ST/FC optical ports, enabling optoelectronic signal conversion between twisted pair and optical fiber.
In one or more embodiments of the invention, the electrical port can be adapted to a straight line or cross line connection.
In one or more embodiments of the present invention, the LiFi internet system and the WiFi internet system are both connected to a photoelectric converter.
In one or more embodiments of the present invention, a network automatic compensation system is further provided between the LiFi internet surfing system and the WiFi internet surfing system, where the network automatic compensation system is used to implement complementation of network signals of the LiFi internet surfing system and the WiFi internet surfing system.
In one or more embodiments of the present invention, the LED driving modulation circuit is connected to the LED light source module, and the LED driving modulation circuit controls a voltage using a triac and can cut an alternating current into a plurality of parts so that an average voltage of an output terminal thereof is compatible with a load voltage required by the LED light source module.
In one or more embodiments of the present invention, the network card is embedded inside the LED light source module, and is used for converting a digital signal into an analog signal in a network, so as to realize data transmission and communication between the terminal device and the network.
In one or more embodiments of the present invention, the photosensor is installed between the photoelectric converter and the LED light source module.
In one or more embodiments of the present invention, the photosensor and the photoelectric converter and the photosensor and the LED light source module are connected by wire or wirelessly.
In one or more embodiments of the present invention, the LED light source module is one or more combinations of a two-primary phosphor converted white LED light source, a three-primary phosphor converted white LED light source, or a multi-chip white LED light source.
Compared with the prior art, the embodiment of the invention has the following technical effects:
the invention can combine LiFi and WiFi, make the two compensate each other, cooperate to provide the stable network signal, can carry on the high-speed, high security, not interfered by electromagnetic signal on the Internet through LiFi, can realize the stable on the Internet continuously.
Drawings
Fig. 1 is a system block diagram of an LED visible light communication based internet surfing system in accordance with an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1, the LED visible light communication-based internet surfing system according to the preferred embodiment of the present invention comprises: photoelectric converter, liFi internet surfing system and wiFi internet surfing system.
The photoelectric converter is used for converting the optical signal into a digital signal. The photoelectric converter also has the functions of address filtering, network segmentation, intelligent alarm and the like, and can improve the network working efficiency and the network operation reliability.
Preferably, the optoelectronic converter has at least two RJ45 electrical ports and at least two SC/ST/FC optical ports, enabling optical-to-electrical signal conversion between twisted pair and optical fiber. Wherein, the electric port can self-adapt to the connection mode of the straight line or the cross line.
Specifically, at least two RJ45 electric ports and at least two SC/ST/FC optical ports enable the photoelectric sensor to be connected with the LiFi Internet surfing system and the WiFi Internet surfing system at the same time, so that the LiFi Internet surfing system and the WiFi Internet surfing system share one photoelectric sensor, and compensation control between the LiFi Internet surfing system and the WiFi Internet surfing system is easier.
The LiFi surfing system comprises an LED driving modulation circuit, an LED light source module, a network card and a photosensitive sensor. The LED driving modulation circuit is used for controlling the LED light source module to flash at high frequency.
The photosensitive sensor is used for sensing high-frequency flicker of the LED light source module. The photosensor is installed between the photoelectric converter and the LED light source module.
Preferably, the photosensitive sensor and the photoelectric converter are connected with the LED light source module by wire or wirelessly.
When a wired connection is used, the communication is more stable and secure. When the wireless connection is adopted, the installation and layout are simpler and more convenient, and the specific adoption of the wired connection or the wireless connection can be selected according to actual requirements.
Specifically, the LED driving modulation circuit may control the LED light source module to blink millions of times per second, with 1 being shown on and 0 being shown off. Because the frequency is too fast, the human eyes cannot perceive the light, and the normal lighting effect is not affected. But the photosensitive sensor can receive these changes. In this way, binary data is quickly encoded into a light signal and efficiently transmitted.
The LED drive modulation circuit is connected with the LED light source module, the LED drive modulation circuit adopts a triac to control voltage, and can cut alternating current into a plurality of parts, so that the average voltage of the output end of the LED drive modulation circuit is compatible with the load voltage required by the LED light source module.
The LED light source module is one or a combination of a plurality of two-primary-color fluorescent powder conversion white light LED light sources, three-primary-color fluorescent powder conversion white light LED light sources or multi-chip white light LED light sources.
Preferably, in the present embodiment, the LED light source module preferentially selects a multi-chip white LED light source. Compared with the two, the multi-chip white light LED light source avoids energy loss of fluorescent powder in the light conversion process in the use process, can obtain higher light efficiency, and is easy to control light intensity so as to be used in different scenes and generate adaptive visible light, thereby being convenient for meeting the requirement of surfing the internet through the visible light in different scenes.
The network card is embedded and installed inside the LED light source module and used for converting digital signals into analog signals in a network, so that data transmission and communication between the terminal equipment and the network are realized.
Specifically, through the network card of installing the adaptation in LED light source module inside for LED light source module can receive the digital signal from photoelectric converter, and converts this digital signal into the analog signal in the network, finally realizes data transmission and communication between terminal equipment and the LED light source module with the help of the visible light, thereby can go on the net through the visible light.
Since visible light does not interfere with other radio signals, it can be used in aircraft and other applications where electromagnetic compatibility issues are a concern. In addition, compared with the radio with limited frequency spectrum, the frequency spectrum of visible light is 10000 times larger than the former frequency spectrum, which means that the bandwidth of a single data channel in the LiFi network can be made large, and more channels can be accommodated for parallel transmission, so that the whole transmission rate is greatly improved.
LiFi provides faster, lower latency and interference free wireless communication, helping to overcome technical challenges, making VR and AR products truly wireless reliable products possible.
The characteristics of light determine that the light cannot pass through the wall to transmit signals, namely the light is high in safety, and the phenomenon of rubbing in WiFi use can be effectively avoided. Meanwhile, different from WiFi of a shared channel, the uplink channel and the downlink channel of LiFi are independently operated, and a hacker must be in the same room and invade the two channels to finish a real attack.
It is worth noting that the cellular network and the WiFi device widely used at present have the problems of large heat productivity and low energy conversion rate. Such as devices within a cellular network base station that are not high frequency but have insufficient energy conversion to convert much of the remaining energy to heat, often require the introduction of cooling devices to maintain proper operation. The LiFi does not have the problem, and the extremely low heating value makes it stable to operate without cooling equipment.
In conclusion, the internet surfing mode with large bandwidth, low time delay, high reliability and low cost can be realized by surfing through visible light.
The WiFi Internet surfing system and the LiFi Internet surfing system are arranged in parallel, and the WiFi Internet surfing system and the LiFi Internet surfing system can be mutually compensated to ensure the stability of network signals.
The LiFi internet surfing system and the WiFi internet surfing system are connected with the same photoelectric converter. So that the photoelectric signal conversion of the two is easy to control.
And a network automatic compensation system is further arranged between the LiFi internet surfing system and the WiFi internet surfing system, and the network automatic compensation system is used for realizing the complementation of network signals of the LiFi internet surfing system and the WiFi internet surfing system.
The network automatic compensation system is connected with the photoelectric converter and is used for signal conversion of the photoelectric converter.
Specifically, when the network signal conversion of the LiFi internet surfing system is weakened due to the shielding of visible light or other factors, that is, the running speed of the LiFi internet surfing system is reduced, the terminal equipment is blocked. The network automatic compensation system can start the network signal conversion of the WiFi internet system by self, so that the WiFi internet system can operate, and the WiFi internet system can compensate the network signal of the LiFi internet system, so that the high-speed operation of the network signal is maintained.
If the network signal conversion of the LiFi internet surfing system completely disappears, the network automatic compensation system directly controls the WiFi internet surfing system to operate so as to prevent the situation of network disconnection, and therefore the whole internet surfing system can operate stably and reliably.
In order to increase the compatibility of Li-Fi and Wi-Fi, IEEE (institute of electrical and electronics engineers) has issued corresponding standards, which lays a foundation for the combination of two technologies. This will further push the application and development of Li-Fi technology, creating a more convenient and secure wireless network environment for us. The method comprises the following steps:
the proposal specifies modifications to the existing physical layer (PHY) and medium access control layer (MAC) to achieve transparent operation of IEEE802.11 over wireless optical media, specifies that the PHY provide bi-directional operation in the 800nm to 1000nm frequency band, measures minimum and maximum throughput at the MAC data service access point (SPA) of 10Mb/s and 9.6Gb/s, respectively, and facilitates interoperability between solid state light sources with different modulation bandwidths.
When the LED light source module is used as a carrier, on the premise of not influencing normal illumination, the information is modulated by the LED drive modulation circuit, then the digital signal is carried on the LED light source module, and the LED light source module is used for transmitting information in a rapid light pulse wireless mode. The receiving end receives the visible light containing information by using the photoelectric converter, converts the visible light into an electric signal, then filters, shapes and amplifies the electric signal, and demodulates corresponding analog information from the electric signal. For the visible light communication base station, each base station is connected in parallel through a signal source connecting wire, in a downlink signal transmission system, an information receiving part is not needed, an optical signal is downlink only through an information transmitting part, and the optical signal is received by terminal equipment such as a computer or a mobile phone with an optoelectronic receiver/signal demodulator.
And secondly, the terminal equipment uses LiFi to perform high-speed surfing and combines WiFi compensation network signals, the network signals are stable enough, and when the light source signals cannot be received, the system can be automatically switched to WiFi to perform surfing so as to ensure continuous and stable connection of the network.
The invention can combine LiFi and WiFi, make the two compensate each other, cooperate to provide the stable network signal, can carry on the high-speed, high security, not interfered by electromagnetic signal on the Internet through LiFi, can realize the stable on the Internet continuously.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. Internet surfing system based on LED visible light communication, its characterized in that includes:
an optoelectronic converter for converting an optical signal into a digital signal;
the LiFi surfing system comprises an LED driving modulation circuit, an LED light source module, a network card and a photosensitive sensor, wherein the LED driving modulation circuit is used for controlling high-frequency flicker of the LED light source module, and the photosensitive sensor is used for sensing the high-frequency flicker of the LED light source module;
the WiFi surfing system is arranged in parallel with the LiFi surfing system, and the WiFi surfing system can compensate with the LiFi surfing system to ensure the stability of network signals.
2. The LED visible light communication based internet surfing system of claim 1 wherein said optoelectronic transducer has at least two RJ45 electrical ports and at least two SC/ST/FC optical ports enabling optical signal conversion between twisted pair and optical fibers.
3. The LED visible light communication based internet surfing system of claim 2 wherein said electrical port is capable of adapting to either a straight line or cross line connection.
4. The LED visible light communication based internet surfing system of claim 1 wherein the lif internet surfing system and the WiFi internet surfing system are both connected to a photoelectric converter.
5. The LED visible light communication based internet surfing system of claim 4 wherein a network automatic compensation system is further provided between the LiFi internet surfing system and the WiFi internet surfing system, wherein the network automatic compensation system is used for realizing the complementation of network signals of the LiFi internet surfing system and the WiFi internet surfing system.
6. The LED visible light communication based internet surfing system of claim 1 wherein the LED driver modulation circuit is connected to the LED light source module, wherein the LED driver modulation circuit uses a triac to control the voltage and is capable of cutting the ac into a plurality of sections such that the average voltage at its output is compatible with the load voltage required by the LED light source module.
7. The internet surfing system based on LED visible light communication according to claim 6, wherein the network card is embedded inside the LED light source module, and is used for converting digital signals into analog signals in a network, so as to realize data transmission and communication between the terminal equipment and the network.
8. The LED visible light communication based internet surfing system of claim 1 wherein the photosensor is mounted between the photoelectric converter and the LED light source module.
9. The LED visible light communication based internet surfing system of claim 8 wherein the photosensor and the photoelectric converter and the photosensor and the LED light source module are wired or wireless.
10. The LED visible light communication based internet surfing system of claim 1 wherein the LED light source module is one or a combination of two primary phosphor converted white LED light sources, three primary phosphor converted white LED light sources or multi-chip white LED light sources.
CN202311011606.0A 2023-08-11 2023-08-11 Internet surfing system based on LED visible light communication Pending CN116865857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311011606.0A CN116865857A (en) 2023-08-11 2023-08-11 Internet surfing system based on LED visible light communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311011606.0A CN116865857A (en) 2023-08-11 2023-08-11 Internet surfing system based on LED visible light communication

Publications (1)

Publication Number Publication Date
CN116865857A true CN116865857A (en) 2023-10-10

Family

ID=88230637

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311011606.0A Pending CN116865857A (en) 2023-08-11 2023-08-11 Internet surfing system based on LED visible light communication

Country Status (1)

Country Link
CN (1) CN116865857A (en)

Similar Documents

Publication Publication Date Title
Haas LiFi is a paradigm-shifting 5G technology
CN103427903B (en) A kind of visible light communication system based on WAP (wireless access point)
KR101683881B1 (en) Method and apparatus for transmitting decision of visibility frame in transmitter and receiver of visible light communications
WO2011034346A2 (en) Apparatus and method for generating high resolution frames for dimming and visibility support in visible light communication
EP2478651B1 (en) Flexible and integrated frame structure design for supporting multiple topologies with visible light communication
CN102412953B (en) Visible light local area network duplex communication method
CN102457331B (en) Method for utilizing LED illumination light to realize wireless local area network communication
JP2016503625A (en) Visible light communication method, apparatus and system
CN204089821U (en) A kind of visible light communication system
CN103684529A (en) Signal transmission method and device
CN104660331A (en) Information sending, receiving method and device of terminal, and the terminal
CN106301561A (en) A kind of wireless light communication device based on illumination LED and control method thereof
CN103795468A (en) Mixed type communication system based on multiplexing
CN106452582A (en) Close-range high-speed bidirectional data transmission system based on wavelength division multiplexing RGB-LED light source
JP2023525407A (en) Trigger-based optical wireless communication system
CN103840876B (en) visible light communication method and system
CN103812560A (en) Hybrid communication system based on visible lights and radio frequency
Adwani et al. Li-Fi: information transferring through LED's
CN109361459A (en) A kind of optic communication intelligence system and method
CN104038286A (en) Communication system
CN106953691B (en) Uplink and downlink time division multiplexing visible light full duplex communication system and method
CN116865857A (en) Internet surfing system based on LED visible light communication
Haas A light-connected world
Jurczak LiFi: enlightening communications
Ashida et al. A VLC receiving devise using audio jacks with a folding noise

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication