CN110366298A - A kind of intelligent lamp rod system with visible light communication - Google Patents
A kind of intelligent lamp rod system with visible light communication Download PDFInfo
- Publication number
- CN110366298A CN110366298A CN201910748538.3A CN201910748538A CN110366298A CN 110366298 A CN110366298 A CN 110366298A CN 201910748538 A CN201910748538 A CN 201910748538A CN 110366298 A CN110366298 A CN 110366298A
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- Prior art keywords
- visible light
- illumination
- intelligent lamp
- rod system
- light communication
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- 238000004891 communication Methods 0.000 title claims abstract description 28
- 238000005286 illumination Methods 0.000 claims abstract description 55
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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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
The intelligent lamp rod system with visible light communication that the present invention relates to a kind of, the difference is that: it includes transmitting unit, for issuing visible light comprising AC network, power frequency full bridge rectifier, flyback parallel resonance converter, high-frequency rectification circuit and the illumination array being sequentially connected electrically；Illumination and data modulation unit can generate train of pulse and export to the flyback parallel resonance converter, and the train of pulse contains visible light modulating signal and intensity of illumination adjustment signal；And demodulation output unit, for obtaining the visible light that the illumination array issues and the data that demodulation is modulated.Illumination brightness of the present invention is adjustable, can automatically adjust brightness of illumination under different ambient lights photograph, not influenced by output voltage.
Description
Technical field
The present invention relates to the intelligent lighting communications field, especially a kind of intelligent lamp rod system with visible light communication.
Background technique
Visible light communication is using white light LEDs as light source, using photoactor or optical imaging device as photoelectricity
Detector will send the wireless light communication skill that communicates on the visible light that LED is issued of signal modulation using atmosphere as channel
Art.
Because LED has much broader modulation bandwidth compared with the conventional light sources such as incandescent lamp and fluorescent lamp, can be with higher
Frequency carries out switching, this makes it possible to carry out high-speed communication using LED as light source.Since modulating frequency is very high, people
Eye is not aware of the flashing of light.In general, visible light communication can be used as the second function of LED light, complete while lighting
Communication.And the method that visible light communication uses the control of discontinuous, brightness is non-adjustable, and is easy the shadow by the voltage exported
It rings.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of intelligent lamp leverage with visible light communication
System, illumination brightness is adjustable, can automatically adjust brightness of illumination under different ambient lights photograph, not influenced by output voltage.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of intelligent lamp leverage with visible light communication
System, the difference is that:
It includes transmitting unit, for issuing visible light comprising AC network, the power frequency full-bridge rectification electricity being sequentially connected electrically
Road, flyback parallel resonance converter, high-frequency rectification circuit and illumination array；
Illumination and data modulation unit can generate train of pulse and export to the flyback parallel resonance converter, the train of pulse
Contain visible light modulating signal and intensity of illumination adjustment signal；
And
Output unit is demodulated, for obtaining the visible light that the illumination array issues and the data that demodulation is modulated.
By above technical scheme, the power frequency full bridge rectifier includes diode D1, diode D2, diode D3With two
Pole pipe D4。
By above technical scheme, the transmitting unit further includes humorous set on the power frequency full bridge rectifier and flyback parallel connection
Filter circuit between vibration converter.
By above technical scheme, the filter circuit includes filter capacitor C1。
By above technical scheme, the flyback parallel resonance converter includes switch element Q1And loosely coupled transformer, institute
The primary side for stating loosely coupled transformer is parallel with capacitor C2, the secondary side of loosely coupled transformer is parallel with capacitor C3。
By above technical scheme, the high-frequency rectification circuit includes diode D5, diode D6, diode D7And diode
D8。
By above technical scheme, the transmitting unit further includes being set between the high-frequency rectification circuit and illumination array
High-frequency filter circuit.
By above technical scheme, the high-frequency filter circuit includes high-frequency filter capacitor C4。
By above technical scheme, the illumination array includes multiple concatenated light emitting diodes.
The prior art is compared, beneficial features of the invention: this has the intelligent lamp rod system of visible light communication, transmitting unit
In flyback parallel resonance converter there is the characteristic of constant current output, be conducive to drive illumination array, avoid complicated constant current
Control circuit；The alternating current of AC network output constant current source after transmitting unit rectification powers to illumination array, illuminates battle array
Column power is more stable, is not influenced by output voltage.Illumination and the pulsewidth modulation of data modulation unit have double attribute: adjusting and shine
The brightness of bright matrix lamp, while realizing the data communication based on visible light；It can be seen that light modulating signal and intensity of illumination are adjusted
Signal is integrated in illumination and data modulation unit, and the light that illumination array can not only be automatically adjusted under different ambient lights photograph is defeated
Brightness out, and the resolution ratio for receiving data is improved, also reduce hardware cost.
Detailed description of the invention
Fig. 1 is the intelligent lamp rod system structure diagram that the embodiment of the present invention has visible light communication；
Fig. 2 is transmitting unit operation principle schematic diagram in the embodiment of the present invention；
Fig. 3 is illumination and data modulation unit operation principle schematic diagram in the embodiment of the present invention；
Fig. 4 is that output unit operation principle schematic diagram is demodulated in the embodiment of the present invention；
Wherein: 1- transmitting unit (101- AC network, 102- power frequency full bridge rectifier, 103- flyback parallel resonance converter,
104- high-frequency rectification circuit, 105- illumination array, 106- filter circuit, 107- high-frequency filter circuit), 2- illumination and data modulation
Unit, 3- demodulation output unit (301- visible light obtains circuit, 302- in-phase amplification circuit, 303- second-order filter circuit).
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.
Please refer to figs. 1 to 4, and the embodiment of the present invention has the intelligent lamp rod system of visible light communication comprising transmitting is single
Member 1, illumination and data modulation unit 2 and demodulation output unit 3.Wherein transmitting unit 1 is for issuing visible light, transmitting unit 1
AC network 101, power frequency full bridge rectifier 102, flyback parallel resonance converter 103, high frequency including being sequentially connected electrically are whole
The alternating current of current circuit 104 and illumination array 105, AC network 101 obtains continuous current source after the rectification of transmitting unit 1
Illumination array 105 is driven to issue visible light, 1 flyback parallel resonance converter 103 has the spy of constant current output in transmitting unit
Property, be conducive to drive illumination array, avoid complicated constant-current control circuit.Illumination and data modulation unit 2 can generate pulse
It goes here and there and exports to the flyback parallel resonance converter 103, the train of pulse contains visible light modulating signal and intensity of illumination tune
Save signal, it is seen that light modulating signal and intensity of illumination adjustment signal are integrated in illumination and data modulation unit 2, can not only be not
With ambient light according to it is lower automatic adjustment illumination array 105 light output brightness, and improve receive data resolution ratio, and also
Reduce hardware cost；Illumination and the pulsewidth modulation of data modulation unit 2 have double attribute: adjusting illumination array 105 and illuminate
Brightness, while realizing the data communication based on visible light.Demodulation output unit 3 is sent out for obtaining the illumination array 105
The data that visible light and demodulation out is modulated.
Referring to FIG. 2, in the present embodiment, the power frequency full bridge rectifier 102 includes diode D1, diode D2, two
Pole pipe D3With diode D4.Transmitting unit 1 further includes converting set on the power frequency full bridge rectifier 102 and flyback parallel resonance
Filter circuit 106 between device 103, the filter circuit 106 include filter capacitor C1.In order to which primary and secondary side is isolated, institute
Stating flyback parallel resonance converter 103 includes switch element Q1And loosely coupled transformer.Switch element Q1 is metal-oxide-semiconductor.In order to make
Loosely coupled transformer high-transmission energy reduces magnetic loss caused by loosely coupled transformer, realizes Sofe Switch ZVS, makes the spy of output
Property be current source in favor of the working characteristics of LED illumination, the primary side of the loosely coupled transformer is parallel with capacitor C2, loose coupling change
The secondary side of depressor is parallel with capacitor C3.The high-frequency rectification circuit 104 includes diode D5, diode D6, diode D7With two poles
Pipe D8.Transmitting unit 1 further includes set on the high-frequency filter circuit between the high-frequency rectification circuit 104 and illumination array 105
107, the high-frequency filter circuit 107 includes high-frequency filter capacitor C4.Illumination array 105 includes multiple concatenated light emitting diodes
LED.Referring to FIG. 2, in the present embodiment, the specific workflow of transmitting unit 1 are as follows: the alternating-current voltage source of AC network 101
Successively DC voltage source is obtained after the power frequency full bridge rectifier 102 and filter circuit 106.As the switch element Q1
After opening, L1It is magnetized, C2It is electrically charged, primary side is by Implantation Energy；As switch element Q1After shutdown, L1And C2Parallel resonance is constituted,
Since electromagnetic induction is in resonant state, secondary side receives energy and is converted to source of high frequency current.High-frequency rectification circuit 104 hands over high frequency
Galvanic electricity is converted into DC current source, powers after high-frequency filter circuit 107 to concatenated illumination array 105, not by light-emitting diodes
The influence of pipe LED quantity.
Referring to FIG. 3, in the present embodiment, illumination and data modulation unit 2 include comparator and DQ trigger.Triangular wave
Frequency and data frequency it is equal, the instruction of intensity of illumination setting and triangular wave through the comparator relatively after to obtain illumination strong
The pulse information of degree setting is input to the clock end of DQ trigger, and data to be transferred is needed then to pass to the end D of DQ trigger.
Referring to FIG. 2, the system of primary side provides clock signal, its frequency are as follows:.Triangular wave is the signal of carrier wave, it
Frequency and clock signal of system frequency it is equal, the setting of intensity of illumination be by an amplitude can be changed sinusoidal signal constitute,
Referring to FIG. 3, the two is sent by the digital signal after comparator comparison just as adjustable pulse width to the clock end of DQ trigger,
It needs data to be transferred then to pass to the end D of DQ trigger, later, obtains the adjustable digital signal of duty ratio, and illumination is strong
The information of the modulation of degree is converted to duty ratio d, and d is bigger, and the intensity for indicating illumination is bigger, the output end output of DQ trigger
The clock of the system of adjustable pulse data and primary side carries out operation, finally obtains train of pulse, such train of pulse and containing visible
The information of light, and the instruction of the adjusting containing intensity of illumination.The power drive signal of illumination array 105 and the modulation letter of visible light
It number is integrated, reduces the cost of hardware.The communication of visible light uses the drive form of train of pulse, improves reception number
According to resolution ratio.Illumination and data modulation unit 2 generate the carrier frequency of resonance, adjustable duty ratio data frequency and
Act on metal-oxide-semiconductor Q1On pulsed power signal.The brightness of 105 Light-emitting diode LED of illumination array can accounting for by signal path
Sky can automatically adjust the brightness of the light output of Light-emitting diode LED than control under different ambient lights photograph.
Referring to Fig.4, in the present embodiment, the demodulation output unit 3 includes that the visible light being sequentially connected electrically obtains electricity
Road 301, adjustable gain in-phase amplification circuit 302 and second-order filter circuit 303.Wherein, it is seen that it includes one that light, which obtains circuit 301,
A photodiode D9With a divider resistance R1.The setting of in-phase amplification circuit 302 is to adapt to different ambient lights according to strong
Degree.Second-order filter circuit 303 is by resistance R3, resistance R4, capacitor C5, capacitor C6, resistance R5, resistance R6It is constituted with operational amplifier.
It demodulates output unit 3 and uses photodiode D9The selection of data is carried out, in-phase amplification circuit 302, which improves, receives signal
Gain.The low-pass filter circuit 303 of second order selects the frequency equal with signal frequency, demodulates the signal modulated.
The above content is combine specific embodiment to the further description of the invention done, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For the those of ordinary skill of the technical field belonging to the present invention, not
Under the premise of being detached from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to guarantor of the invention
Protect range.
Claims (9)
1. a kind of intelligent lamp rod system with visible light communication, it is characterised in that:
It includes transmitting unit, for issuing visible light comprising AC network, the power frequency full-bridge rectification electricity being sequentially connected electrically
Road, flyback parallel resonance converter, high-frequency rectification circuit and illumination array；
Illumination and data modulation unit can generate train of pulse and export to the flyback parallel resonance converter, the train of pulse
Contain visible light modulating signal and intensity of illumination adjustment signal；
And
Output unit is demodulated, for obtaining the visible light that the illumination array issues and the data that demodulation is modulated.
2. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the power frequency full-bridge is whole
Current circuit includes diode D1, diode D2, diode D3With diode D4。
3. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the transmitting unit is also
Including the filter circuit being set between the power frequency full bridge rectifier and flyback parallel resonance converter.
4. as claimed in claim 3 with the intelligent lamp rod system of visible light communication, it is characterised in that: the filter circuit packet
Include filter capacitor C1。
5. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the flyback parallel connection is humorous
The converter that shakes includes switch element Q1And loosely coupled transformer, the primary side of the loosely coupled transformer are parallel with capacitor C2, loose coupling
The secondary side of transformer is parallel with capacitor C3。
6. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the high-frequency rectification electricity
Road includes diode D5, diode D6, diode D7With diode D8。
7. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the transmitting unit is also
Including the high-frequency filter circuit being set between the high-frequency rectification circuit and illumination array.
8. as claimed in claim 7 with the intelligent lamp rod system of visible light communication, it is characterised in that: the High frequency filter electricity
Road includes high-frequency filter capacitor C4。
9. as described in claim 1 with the intelligent lamp rod system of visible light communication, it is characterised in that: the illumination array packet
Include multiple concatenated light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748538.3A CN110366298B (en) | 2019-08-14 | 2019-08-14 | Intelligent lamp post system with visible light communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748538.3A CN110366298B (en) | 2019-08-14 | 2019-08-14 | Intelligent lamp post system with visible light communication |
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| Publication Number | Publication Date |
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| CN110366298A true CN110366298A (en) | 2019-10-22 |
| CN110366298B CN110366298B (en) | 2024-08-02 |
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| CN201910748538.3A Active CN110366298B (en) | 2019-08-14 | 2019-08-14 | Intelligent lamp post system with visible light communication |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030030386A1 (en) * | 1998-04-15 | 2003-02-13 | Leeb Steven B. | Non-flickering illumination based communication |
| CN103841732A (en) * | 2014-03-21 | 2014-06-04 | 北京理工大学 | Indoor visible light communication method simultaneously achieving brightness control and data transmission |
| CN207560383U (en) * | 2017-09-27 | 2018-06-29 | 百家丽（中国）照明电器有限公司 | A kind of lighting device based on LED visible light communication |
| CN108811261A (en) * | 2018-09-13 | 2018-11-13 | 福州大学 | A kind of visible light communication modulator approach of single-stage LED drive circuit |
| CN210518943U (en) * | 2019-08-14 | 2020-05-12 | 湖北省电力装备有限公司 | Intelligent lamp pole system with visible light communication function |
-
2019
- 2019-08-14 CN CN201910748538.3A patent/CN110366298B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030030386A1 (en) * | 1998-04-15 | 2003-02-13 | Leeb Steven B. | Non-flickering illumination based communication |
| CN103841732A (en) * | 2014-03-21 | 2014-06-04 | 北京理工大学 | Indoor visible light communication method simultaneously achieving brightness control and data transmission |
| CN207560383U (en) * | 2017-09-27 | 2018-06-29 | 百家丽（中国）照明电器有限公司 | A kind of lighting device based on LED visible light communication |
| CN108811261A (en) * | 2018-09-13 | 2018-11-13 | 福州大学 | A kind of visible light communication modulator approach of single-stage LED drive circuit |
| CN210518943U (en) * | 2019-08-14 | 2020-05-12 | 湖北省电力装备有限公司 | Intelligent lamp pole system with visible light communication function |
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| CN110366298B (en) | 2024-08-02 |
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