WO2012152182A1 - Nœud de diffusion générale de données optiques, récepteur d'informations, système et procédé de réseau de diffusion générale - Google Patents

Nœud de diffusion générale de données optiques, récepteur d'informations, système et procédé de réseau de diffusion générale Download PDF

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Publication number
WO2012152182A1
WO2012152182A1 PCT/CN2012/074586 CN2012074586W WO2012152182A1 WO 2012152182 A1 WO2012152182 A1 WO 2012152182A1 CN 2012074586 W CN2012074586 W CN 2012074586W WO 2012152182 A1 WO2012152182 A1 WO 2012152182A1
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WIPO (PCT)
Prior art keywords
optical data
optical
signal
data broadcasting
illumination light
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Ceased
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PCT/CN2012/074586
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English (en)
Chinese (zh)
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明明
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Nationz Technologies Inc
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Nationz Technologies Inc
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Publication date
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Publication of WO2012152182A1 publication Critical patent/WO2012152182A1/fr
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    • 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

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to an optical data broadcasting node, an optical data information receiver, an optical data broadcasting network system and a method for realizing data broadcasting by using an optical signal.
  • the technical problem to be solved by the present invention is to provide an optical data broadcast node, an optical data information receiver, an optical data broadcast network system and a method, which solve the problem that the existing wireless communication technology has high requirements for users when laying out, and judges the wireless broadcast network. Inconvenient coverage issues.
  • an optical data broadcast network system comprising an optical data broadcast node and an optical data information receiver; wherein the optical data broadcast node is configured to use the first data to be transmitted Converting to an illumination light signal for transmitting, and converting the received illumination light signal into a second corresponding to the first data that the optical data broadcast node needs to transmit data.
  • the invention has the beneficial effects that the invention transmits data by illuminating optical signals, so that the user does not need to learn and understand complex radio knowledge, and can easily and quickly determine the optical signal coverage condition by adjusting the light intensity to adjust the optical data broadcast while obtaining illumination.
  • the node placement position allows the entire network to achieve optimal coverage.
  • the light transmitted by the optical data broadcasting network is higher than the radio wave frequency. According to the Shannon formula, the data rate that the optical data broadcasting network can transmit is higher, and the emitted light has no radiation harm to the human body.
  • the user can adjust the optical network coverage by adjusting the intensity of the illumination light signal or using the screen to adjust the coverage of the optical network. Users can quickly complete the network layout without the need for relevant expertise, and also make network management easier.
  • the present invention can also be improved as follows.
  • the optical data broadcast node includes a first data conversion module, an optical data broadcast module, and a first main control module; wherein the first data conversion module is configured to modulate data to be transmitted into a data format for optical data broadcast a first digital signal; the optical data broadcast module is configured to convert the first digital signal into an illumination optical signal; the first main control module is configured to control the first data conversion module and the optical data broadcast module.
  • optical data broadcasting module is at least two, and each of the optical data broadcasting modules is different in frequency from the illumination optical signal transmitted by the other optical data broadcasting module.
  • the illumination light signal is an optical signal of a visible light frequency or an optical signal mixed with a visible light frequency and a non-visible light frequency.
  • the optical data broadcasting module is a controllable light emitting device, and the controllable light emitting device may be a light emitting diode.
  • the optical data information receiver includes an optical data broadcast receiving module, a second data conversion module, and a second main control module; wherein the optical data broadcast receiving module is configured to receive the illumination sent by the optical data broadcast node An optical signal, and demodulating the illumination optical signal into a second digital signal; the second data conversion module is configured to convert the demodulated second digital signal into second data; And controlling the optical data broadcast receiving module and the second data conversion module.
  • the invention also provides an optical data broadcasting method, comprising:
  • the optical data broadcasting node modulates the first data to be transmitted into a first digital signal in a data format for optical data broadcasting, and converts the first digital signal into an illumination light signal;
  • the optical data information receiver receives the illumination light signal and demodulates the illumination light signal into a second digital signal and converts the second digital signal into second data corresponding to the first data transmitted by the optical data broadcast node.
  • optical data broadcasting module encodes the digital signal into illumination light signals of different light intensity levels.
  • the illumination light signal light intensity switching frequency is higher than the human eye identifiable frequency.
  • FIG. 1 is a structural block diagram of an optical data broadcast node according to the present invention.
  • FIG. 2 is a structural block diagram of an optical data broadcast node having a plurality of optical data broadcasting modules in the present invention
  • FIG. 3 is a structural block diagram of an optical data information receiver
  • FIG. 4 is a block diagram showing the structure of an optical data information receiver having a plurality of optical data broadcast receiving modules
  • FIG. 5 is a schematic block diagram showing the structure of an optical network system according to the present invention.
  • an optical data broadcast network system As an aspect of the technical solution of the present invention, an optical data broadcast network system is provided. As shown in FIG. 5, the system includes an optical data broadcast node 1 and an optical data information receiver 2, wherein the optical data broadcast node 1 is responsible for transmitting data to the outside. The optical data information receiver 2 is responsible for receiving data.
  • the optical data broadcast node 1 includes three parts: a first data conversion module 11 , a first main control module 12 , and an optical data broadcast module 13 ; optical data can be added to the optical data broadcast node 1 according to application requirements.
  • the number of the broadcast modules 13 is extended by the optical data broadcast module 13 of the application and the different optical frequencies, as shown in FIG. 2; wherein the first data conversion module 11 is configured to modulate the data to be transmitted into the data format for optical data broadcasting.
  • the digital data broadcasting module is configured to convert the digital signal into an illumination optical signal; the main control module is configured to control the data conversion module and the optical data broadcasting module, such as performing signaling on the entire broadcast node, light intensity and the like. control.
  • the optical data information receiver 2 includes an optical data broadcast receiving module 21, a second main control module 22, and a second data conversion module 23.
  • the number of optical data broadcast receiving modules 21 can be increased according to application requirements.
  • the optical data broadcast receiving module 21 is configured to receive an illumination optical signal sent by the optical data broadcast node, and demodulate the illumination optical signal into a digital signal; Converting the demodulated digital signal into data;
  • the second main control module 22 is configured to control the optical data broadcast receiving module 21 and the second data conversion module 23, such as controlling signaling, receiving sensitivity, etc. of the entire optical data receiver. Indicators are controlled.
  • optical data broadcasting network system of the present invention The specific implementation manner of the optical data broadcasting network system of the present invention will be briefly described below.
  • the optical data broadcast node can be established at the actual application site. Under the control of the first main control module of the optical data broadcast node, the optical data broadcast module converts the signal received by the first data conversion module into an uninterrupted optical signal. issue.
  • the optical signal is encoded by the optical data broadcasting module into a light intensity of different brightness and darkness, and the encoding mode is not limited to being represented only by light or no light, and may also be encoded by different levels of brightness and darkness. Considering that different coding methods have different signal-to-noise ratio requirements for the light source, the optical data broadcasting module can set different coding modes by manual or automatic means.
  • Optical coding using LED can achieve controllable fast brightness switching.
  • the switching frequency is much higher than the human eye identifiable frequency, considering the light-emitting device as the light source.
  • Application characteristics a certain length of bright time can be inserted in the encoding to ensure its application characteristics as a light source or to integrate non-visible light emitting devices to transmit optical data through non-visible frequencies while using ordinary light source illumination. These designs are designed to make the user unable to Perceive changes in the light source while achieving data transfer.
  • the light intensity is transmitted by the optical data broadcast node
  • the user confirms the coverage of the optical data network
  • the optical network coverage is set by adjusting the light intensity of the optical data broadcast node or dividing the area by using the screen.
  • the user can judge the optical data coverage according to common sense, and can also determine the optical signal intensity and the receivable optical signal rate of the location where the receiver is located according to the indication of the optical data information receiver.
  • the optical data information receiver 12 is disposed within the coverage of the optical network, and a plurality of optical data information receivers can be disposed according to the needs of the system.
  • the optical data broadcast receiving module Under the control of the second main control module of the optical data information receiver, the optical data broadcast receiving module automatically searches for the optical signal emitted by the optical data broadcast module, and transmits the received optical signal to the uninterrupted output of the second data conversion module. .
  • the same coverage area may have multiple optical network broadcast systems working at the same time.
  • different optical broadcast systems may be used to split optical frequencies or use time slots or other collision avoidance modes to make different optical broadcast systems in the same coverage area. jobs.
  • the invention also provides an optical data broadcasting method, comprising:
  • the optical data broadcasting node modulates the data to be transmitted into a digital signal in a data format for optical data broadcasting, and converts the digital signal into an illumination light signal.
  • the illumination light signal is encoded by the optical data broadcast node into a light intensity of different brightness and darkness, and the coding mode is not limited to being represented only by light or no light, and may also be encoded by different levels of brightness and darkness.
  • the optical data information receiver receives the illumination light signal, demodulates the illumination light signal into a digital signal, and converts the digital signal into data corresponding to the data transmitted by the optical data broadcast node.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

La présente invention concerne un système de réseau de diffusion générale de données optiques, comprenant un nœud de diffusion générale de données optiques et un récepteur d'informations de données optiques, le nœud de diffusion générale de données optiques étant utilisé pour convertir des premières données à émettre en un signal optique d'éclairement et pour émettre celui-ci. Le récepteur d'informations de données optiques est utilisé pour recevoir le signal optique d'éclairement et convertir celui-ci en des secondes données qui correspondent aux premières données à émettre par le nœud de diffusion générale de données optiques. Comme les données sont transmises par le signal optique d'éclairement, l'utilisateur n'a pas besoin d'étudier ou de comprendre un système radio complexe et il est commode et rapide d'analyser la situation de couverture du signal optique en fonction de l'intensité de l'éclairement obtenu, afin d'ajuster la position de déploiement du nœud de diffusion générale de données optiques et de permettre au réseau dans son ensemble d'obtenir la meilleure couverture possible.
PCT/CN2012/074586 2011-05-06 2012-04-24 Nœud de diffusion générale de données optiques, récepteur d'informations, système et procédé de réseau de diffusion générale Ceased WO2012152182A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110116764.3A CN102769856B (zh) 2011-05-06 2011-05-06 一种光数据广播网络系统及方法
CN201110116764.3 2011-05-06

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WO2012152182A1 true WO2012152182A1 (fr) 2012-11-15

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WO (1) WO2012152182A1 (fr)

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CN103117826A (zh) * 2013-02-01 2013-05-22 东南大学 可见光无线通信语音广播装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11122186A (ja) * 1997-10-14 1999-04-30 Sharp Corp ワイヤレス光通信システム
CN1259805A (zh) * 1999-01-05 2000-07-12 阿尔卑斯电气株式会社 光通信装置
CN1933369A (zh) * 2005-09-13 2007-03-21 株式会社东芝 可见光通信系统及其方法
CN101095299A (zh) * 2004-09-20 2007-12-26 兹克斯托克资产有限责任公司 用于自由空间光传输的发送设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040101312A1 (en) * 2002-08-29 2004-05-27 Florencio Cabrera AC power source light modulation network
JP2007274566A (ja) * 2006-03-31 2007-10-18 Nakagawa Kenkyusho:Kk 照明光通信装置
CN101656011A (zh) * 2009-05-27 2010-02-24 北京奥腾讯达科技有限公司 全能感烟火灾探测器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11122186A (ja) * 1997-10-14 1999-04-30 Sharp Corp ワイヤレス光通信システム
CN1259805A (zh) * 1999-01-05 2000-07-12 阿尔卑斯电气株式会社 光通信装置
CN101095299A (zh) * 2004-09-20 2007-12-26 兹克斯托克资产有限责任公司 用于自由空间光传输的发送设备
CN1933369A (zh) * 2005-09-13 2007-03-21 株式会社东芝 可见光通信系统及其方法

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CN102769856A (zh) 2012-11-07

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