CN205610645U

CN205610645U - LED communication and lighting system based on FPGA

Info

Publication number: CN205610645U
Application number: CN201620453514.7U
Authority: CN
Inventors: 刘建才; 兰春虎; 孔露倩
Original assignee: Nanjing University
Current assignee: Nanjing University
Priority date: 2016-05-13
Filing date: 2016-05-13
Publication date: 2016-09-28
Anticipated expiration: 2026-05-13

Abstract

The utility model discloses a LED communication and lighting system based on FPGA, compile decoder module, LED emission module, photoelectric detection receiving module including AD conversion module, FPGA to and DA conversion module, wherein, AD conversion module's input is connected with the signal source, and the output of coding module is connected with LED emission module's input, and photoelectric detection receiving module's output is connected with decoder module, and decoder module's output is connected with DA conversion module. Through free space transfer message, do not receive electromagnetic interference, realized the information transmission based on the visible light signal, the short distance communication service of large capacity, high speed can carry out.

Description

LED communication based on FPGA and illuminator

Technical field

This utility model relates to communication technical field, particularly relates to LED communication based on FPGA and illuminator.

Background technology

Visible ray wireless communication technology is as the wireless light communication technology that the development of White-light LED illumination technology is set up, and is based on white light LEDs The wireless light communication technology of device.And white light LED part has advantages such as low-power consumption, high service life and environmental protection, its Output optical power and driving Streaming current has high response sensitivity, it is possible to realize high-speed data communication.Utilize the high-speed response characteristic of white light LED part, same at light source lighting Time, utilize data outputting module and auxiliary circuit, information transmission can be carried out with the output electric current of High Speed Modulation device by the change of output intensity.

Visible ray wireless communication technology can realize merging with current wireless communication system.Along with rise and the development rapidly of LED industry, partly Conductor illumination will replace traditional illumination.Visible wavelength 380nm to 780nm is new frequency spectrum resource, not by complicated electromagnetic interference influence, is shining Being capable of ubiquitous communication while bright, unconfined frequency spectrum resource can provide jumbo communication service, on airport, station, hospital, market Wait under water under special occasions and have a extensive future.

Summary of the invention

Technical problem to be solved in the utility model is to provide one can not be by electromagnetic interference, it is achieved Large Copacity, the short haul connection of two-forty The LED communication based on FPGA of service and illuminator.

To achieve these goals, the technical solution of the utility model is:

Including A/D modular converter, coding module, LED emission module, photodetection receiver module, decoder module, and D/A modular converter； Wherein, the input of A/D modular converter is connected with signal source, and the outfan of A/D modular converter is connected with the input of coding/decoding module, encodes mould The outfan of block is connected with the input of LED emission module, and the outfan of photodetection receiver module is connected with decoder module, decoder module Outfan is connected with D/A modular converter.

Described coding module is the FPGA encoder carrying out signal modulation.

Described LED emission module is LED drive circuit and LED light array.

Described photodetection receiver module includes the silicon cell optical pickup apparatus receiving carrier signal, the outfan of silicon cell optical pickup apparatus It is connected with decoder module.

Connecting on the outfan of described silicon cell optical pickup apparatus and have silicon cell to receive circuit, silicon cell receives circuit and is connected with decoder module Connecing, wherein, silicon cell receives the second amplifying circuit that circuit includes being connected, this second amplifying circuit with silicon cell optical pickup apparatus outfan Outfan be connected with decoder module.

Described decoder module is FPGA decoder.

Prior art compares, and this utility model has the advantage that

This utility model provides LED communication based on FPGA and illuminator, utilizes white light LEDs to can be used as communication light source, and passes through visible ray Carrier signal is received, and transmits information by free space, it is achieved that the signal of white light LEDs transmission and receiving, it is to avoid environmental change is to signal The interference that transmission brings, further, since white light LEDs can provide stable illumination and the most common, therefore, white light LEDs communications energy Enough effectively saving the energy, and offer convenience for Consumer's Experience, the signal optical source further accessed for Broadband high-speed data sets up basis.

Accompanying drawing explanation

Fig. 1 is circuit theory diagrams of the present utility model；

Fig. 2 is the principle schematic of the second amplifying circuit in receiving terminal photodetection receiver module of the present utility model；

Detailed description of the invention

Below in conjunction with the accompanying drawings and example, detailed description of the invention of the present utility model is described in further detail.

As it is shown in figure 1, LED communication based on FPGA of the present utility model and illuminator, including A/D modular converter, coding module, LED Transmitter module, photodetection receiver module, decoder module, and D/A modular converter；Wherein, the input of A/D modular converter is connected with signal source, The outfan of A/D modular converter is connected with the input of coding/decoding module, and the outfan of coding module is connected with the input of LED emission module, The outfan of photodetection receiver module is connected with decoder module, and the outfan of decoder module is connected with D/A modular converter.Wherein, described LED Transmitter module includes LED drive circuit and LED light array.Described coding module is the FPGA encoder carrying out signal modulation.Described smooth electrical resistivity survey Surveying receiver module and include receiving the silicon cell reception device of carrier signal, the outfan of photodetection receiver module is connected with decoder module.Institute Stating to connect on the outfan of silicon cell reception device and have second amplifying circuit, this second amplifying circuit is connected with decoder module, described decoder module For FPGA decoder.

Concrete implementation process is:

Use special A/D sampling module to carry out signals collecting, encode in FPGA, amplify through oversampling circuit and sent optical information by LED, by Photodetection receiver module receives, and enters FPGA after treatment and is decoded, the most again by special D/A signal output waveform.

Claims

1. LED communication based on FPGA and illuminator, including: A/D modular converter, coding module, LED emission module, photoelectricity Detection receiver module, decoder module, and D/A modular converter；Wherein, the input of A/D modular converter is connected with signal source, The outfan of A/D modular converter is connected with the input of coding/decoding module, and the outfan of coding module is defeated with LED emission module Entering end to be connected, the outfan of photodetection receiver module is connected with decoder module, and the outfan of decoder module is changed with D/A Module is connected.

LED communication based on FPGA the most according to claim 1 and illuminator, it is characterised in that: described LED emission mould Block includes LED drive circuit and LED light array.

3. LED communication based on FPGA as claimed in claim 1 or 2 and illuminator, it is characterised in that: described coding module For carrying out the FPGA encoder of signal modulation.

4. LED communication based on FPGA as claimed in claim 1 and illuminator, it is characterised in that: described photodetection receives Module includes the silicon cell optical pickup apparatus receiving carrier signal, the outfan of silicon cell optical pickup apparatus and decoder module It is connected.

5. LED communication based on FPGA as claimed in claim 4 and illuminator, it is characterised in that: described silicon cell light connects Connecting on the outfan of receiving apparatus and have second amplifying circuit, this second amplifying circuit is connected with FPGA decoder module.

6. the LED communication based on FPGA as described in claim 1 or 4 and illuminator, it is characterised in that: described decoder module For FPGA decoder.