WO2012152182A1

WO2012152182A1 - Optical data broadcasting node, information receiver, broadcasting network system and method

Info

Publication number: WO2012152182A1
Application number: PCT/CN2012/074586
Authority: WO
Inventors: 明明
Original assignee: 国民技术股份有限公司
Priority date: 2011-05-06
Filing date: 2012-04-24
Publication date: 2012-11-15
Also published as: CN102769856B; CN102769856A

Abstract

The present invention relates to an optical data broadcasting network system, including an optical data broadcasting node and an optical data information receiver, wherein the optical data broadcasting node is used for converting first data to be transmitted into an illumination optical signal and sending the same; and the optical data information receiver is used for receiving the illumination optical signal and converting the same into second data corresponding to the first data to be transmitted by the optical data broadcasting node. Since the data is transmitted by the illumination optical signal, the user need not study or understand the complicated radio system, and it is convenient and fast to judge the optical signal coverage condition according to the illumination intensity while obtaining illumination so as to adjust the deployment position of the optical data broadcasting node and enable the entire network to obtain the best coverage effect.

Description

Optical data broadcasting node, information receiver, broadcast network system and method

Technical field

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.

Background technique

With the advancement of technology and social development, information transmission plays an increasingly important role in people's daily life. The relationship between people's production and life and the transmission of information is getting closer and closer, and information is transmitted quickly and easily. People are increasingly demanding. The development of information radio broadcasting technology has enabled people to get rid of the constraints of transmission cables and to move freely. Traditional wireless broadcast communication generally adopts radio communication technology. When using this technology to deploy a wireless broadcast network, the user needs to have certain knowledge of radio communication technology, otherwise there will be coverage blind spots, signal differences, etc.; and because of the wearing of radio signals Permeability and invisibility, the user can not easily distinguish whether the deployed wireless broadcast network leaks outside the coverage area. At the same time, in the already deployed radio broadcast network, it is not convenient to divide the area and control the wireless signal coverage to an arbitrary shape.

technical problem

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.

Technical solution

The technical solution of the present invention to solve the above technical problem is as follows: an optical data broadcast network system, the 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.

Beneficial effect

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. In addition, 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.

Based on the above technical solutions, the present invention can also be improved as follows.

Further, 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.

Further, the 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.

Further, 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.

Further, the optical data broadcasting module is a controllable light emitting device, and the controllable light emitting device may be a light emitting diode.

Further, 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.

Further, the optical data broadcasting module encodes the digital signal into illumination light signals of different light intensity levels.

Further, the illumination light signal light intensity switching frequency is higher than the human eye identifiable frequency.

DRAWINGS

1 is a structural block diagram of an optical data broadcast node according to the present invention;

2 is a structural block diagram of an optical data broadcast node having a plurality of optical data broadcasting modules in the present invention;

3 is a structural block diagram of an optical data information receiver;

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.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the invention

The principles and features of the present invention are described in the following with reference to the accompanying drawings.

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.

As shown in FIG. 1 , 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.

As shown in FIG. 3, 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. At the same time, the number of optical data broadcast receiving modules 21 can be increased according to application requirements. As shown in FIG. 4, 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.

The specific implementation manner of the optical data broadcasting network system of the present invention will be briefly described below.

First, 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 (Light Emitting Diode, light-emitting diodes or other controllable light-emitting devices can achieve controllable fast brightness switching. With high-speed flicker or fast light intensity 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.

Secondly, in the actual application site, the light intensity is transmitted by the optical data broadcast node, the user confirms the coverage of the optical data network, and 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.

In use, 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.

Finally, 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. 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. .

In an application, the same coverage area may have multiple optical network broadcast systems working at the same time. In this case, 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.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Industrial applicability

Sequence table free content

Claims

An optical data broadcast node, comprising: a first conversion module and a first main control module; wherein the first conversion module is configured to convert first data that needs to be transmitted into illumination light And transmitting the signal; the first main control module is configured to control the first conversion module.
The optical data broadcasting node according to claim 1, wherein the first conversion module comprises a first data conversion module and an optical data broadcasting module; wherein the first data conversion module is configured to: Data is modulated into a first digital signal in a data format for optical data broadcasting; the optical data broadcasting module is configured to convert the first digital signal into an illumination optical signal and transmit the first digital control module; The first data conversion module and the optical data broadcast module perform control.
The optical data broadcasting node according to claim 2, wherein 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 node according to claim 2, wherein the illumination light signal transmitted by the optical data broadcasting module has a different brightness time.
The optical data broadcasting node according to claim 2, wherein said optical data broadcasting module encodes said first digital signal into illumination light signals having different light intensity levels.
The optical data broadcasting node according to claim 5, wherein said illumination light signal light intensity switching frequency is higher than a human eye identifiable frequency.
The optical data broadcasting node according to claim 2, wherein said optical data broadcasting module is at least two.
The optical data broadcasting node according to claim 7, wherein each of the optical data broadcasting modules transmits an illumination light signal having a different frequency.
The optical data broadcasting node according to any one of claims 2 to 8, wherein the optical data broadcasting module is a controllable light emitting device.
The optical data broadcasting node according to claim 9, wherein said controllable light emitting device is a light emitting diode.
An optical data information receiver, wherein the optical data information receiver comprises a second conversion module and a second main control module; wherein the second conversion module is configured to receive an externally transmitted illumination light signal, and Converting the illumination light signal into second data; the second main control module is configured to control the second conversion module.
The optical data information receiver according to claim 11, wherein the second conversion module comprises an optical data broadcast receiving module and a second data conversion module; wherein the optical data broadcast receiving module is configured to receive an external transmission Illuminating the 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; the second master The module is configured to control the optical data broadcast receiving module and the second data conversion module.
An optical data broadcasting network system, characterized in that the system comprises at least one optical data broadcasting node according to any one of claims 1 to 10, and at least one optical data information according to claim 11 or Receiver;

The optical data broadcast node is configured to convert the first data to be transmitted into an illumination light signal for transmitting; the optical data information receiver is configured to receive the illumination light signal, and convert the received illumination light signal into the The optical data broadcast node needs to transmit the second data corresponding to the first data.
An optical data broadcasting method based on the optical data broadcasting network system of claim 13, comprising:

The optical data broadcast node converts the first data to be transmitted into an illumination light signal and transmits the same;

The optical data information receiver receives the illumination light signal and converts the illumination light signal into second data corresponding to the first data transmitted by the optical data broadcast node.
The optical data broadcasting method according to claim 14, wherein the method for the optical data broadcasting node to convert the first data to be transmitted into the illumination optical signal comprises:

The optical data broadcast node modulates the first data to be transmitted into a first digital signal in a data format for optical data broadcasting;

Converting the first digital signal to an illumination light signal.
The optical data broadcasting method according to claim 14, wherein said optical data information receiver receives said illumination light signal and converts said illumination light signal into a first transmission with said optical data broadcasting node The method of corresponding second data of the data includes:

The optical data information receiver receives the illumination light signal and demodulates the illumination light signal into a second digital signal;

Converting the second digital signal to second data corresponding to the first data transmitted by the optical data broadcast node.
The optical data broadcasting method according to any one of claims 14 to 16, wherein the illumination light signal is an optical signal of a visible light frequency or an optical signal in which a visible light frequency and a non-visible light frequency are mixed.
The optical data broadcasting method according to any one of claims 14 to 16, wherein the illumination light signal transmitted by the optical data broadcasting node has a different brightness time.
The optical data broadcasting method according to any one of claims 14 to 16, characterized in that the frequency of the illumination light signals transmitted by the optical data broadcasting node is different.
The optical data broadcasting method according to any one of claims 14 to 16, characterized in that the light intensity level of the illumination light signal transmitted by the optical data broadcasting node is different.
The optical data broadcasting method according to claim 20, wherein the illumination light signal light intensity switching frequency is higher than a human eye identifiable frequency.