CN106067843A - A kind of visible light communication device based on analog switch switching control - Google Patents
A kind of visible light communication device based on analog switch switching control Download PDFInfo
- Publication number
- CN106067843A CN106067843A CN201610467484.XA CN201610467484A CN106067843A CN 106067843 A CN106067843 A CN 106067843A CN 201610467484 A CN201610467484 A CN 201610467484A CN 106067843 A CN106067843 A CN 106067843A
- Authority
- CN
- China
- Prior art keywords
- resistance
- analog switch
- multiselect
- visible light
- communication device
- 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
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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/502—LED transmitters
-
- 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
- H04B10/564—Power control
Abstract
The invention discloses a kind of visible light communication device based on analog switch switching control, including power supply, controller, LED, variable resistance module (Rx) and on-off circuit (Q1)；Power supply is to be powered with the branch road that variable resistance block coupled in series is formed by LED, on-off circuit and variable resistance wired in parallel, and on-off circuit is controlled by the signal of communication of controller output；Described variable resistance module is the resistance switching circuit being made up of 2^N resistance and multiselect one analog switch；Described multiselect one analog switch has 2^N input and 1 outfan；N is the natural number more than 2；^ is power symbol, and 2^i represents the i power of 2；Variable resistance module has N number of control end, and N number of control end connects N number of I/O port of controller respectively；The resistance of any two resistance is different.Should can realize multistage light modulation, simple circuit by visible light communication device based on analog switch switching control, it is easy to control.
Description
Technical field
The present invention relates to a kind of visible light communication device with electric resistance array.
Background technology
In visible light communication system, the on and off by LED (On and Off) are needed to realize signal transmission, but
In actual application, the light intensity of LED luminescence needs to adjust at any time, in existing brightness adjustment mode, and the progression of light modulation
Seldom, it is therefore necessary to design a kind of visible light communication device that can support multistage light modulation.
Summary of the invention
The technical problem to be solved is to provide a kind of visible light communication based on analog switch switching control dress
Put, should can realize multistage light modulation, simple circuit by visible light communication device based on analog switch switching control, it is easy to control.
The technical solution of invention is as follows:
A kind of visible light communication device based on analog switch switching control, including power supply, controller, LED, variable resistance mould
Block (Rx) and on-off circuit (Q1)；
Power supply is to be powered with the branch road that variable resistance block coupled in series is formed by LED, on-off circuit and variable resistance wired in parallel,
On-off circuit is controlled by the signal of communication of controller output；The resistance of variable resistance module is controlled by the switching letter of controller output
Number；
Described variable resistance module is the resistance switching circuit being made up of 2^N resistance and multiselect one analog switch；Described many
An analog switch is selected to have 2^N input and 1 outfan；N is the natural number more than 2；^ is power symbol, and 2^i represents 2
I power；Variable resistance module has N number of control end, and N number of control end connects N number of I/O port of controller respectively；Any two electricity
The resistance of resistance is different.
Further, 2^N input of multiselect one analog switch is connected to common point by 2^N described resistance respectively
P, the outfan of multiselect one analog switch is connected to common point S；P point and 2 end points that S point is variable resistance module；Arbitrarily choosing
One passage of logical multiselect one analog switch, then have a resistance to connect between P and S point.
As preferably, N is 3, and resistance is 8, and multiselect one analog switch is eight to select a variable connector, multiselect one analog switch
Control end be 3.
As preferably, N is 4, and resistance is 16, and multiselect one analog switch is 16 to select a variable connector, multiselect one to simulate
The control end of switch is 4.
The resistance of 2^N resistance is respectively R, 2R, 3R ..., (2^N-1) * R and 2^N*R, and R is resistance value, such as 100 Europe
Nurse, or 1 kilohm.
Or, the resistance of 2^N resistance is respectively R, 2R, 4R ..., 2^(2^N-2) and * R and 2^(2^N-1) * R, R be
Resistance value, such as 10 ohm, 100 ohm, or 1 kilohm.
Controller is also associated with light intensity detection circuit, for detecting the background luminance of site environment, as LED light modulation
Foundation, if background is the brightest, then controls the brighter display of LED.Background light intensity is the biggest, then the luminosity of LED is the biggest, it is ensured that
LED emits beam and there is the contrast of necessity between background light, in order to signal identification.
Further, controller is single-chip microcomputer, DSP or FPGA or CPLD.
The visible light communication device based on analog switch switching control of the present invention, uses based on multiselect one analog switch group
The resistance switching circuit become, as adjustable resistance module, can realize few I/O port and realize light modulation progression as much as possible, such as 3
Individual I/O port controls 8 resistance switchings, and 4 I/O port control 16 resistance and switch, and simple circuit, it is easy to control.It addition,
Resistance uses linear increment or progression to be incremented by, and according to service condition option and installment, can meet different application demands.And,
Use light intensity detection circuit detection background luminance, provide foundation for LED light modulation, thus realize more preferable communication efficiency.To sum up
Described, this visible light communication device based on analog switch switching control is easy to implement, controller resource (the IO end of needs
Mouthful) less, motility is good, it is easy to controls, advantageously ensures that excellent communication quality.
Accompanying drawing explanation
Fig. 1 is the electric theory diagram of the visible light communication device based on analog switch switching control of the present invention；
Fig. 2 is the schematic diagram of variable resistance module.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the present invention is described in further details:
Embodiment 1:
Embodiment 1:
As shown in Figure 1-2, a kind of visible light communication device based on analog switch switching control, including power supply, controller, LED
Lamp, variable resistance module Rx and on-off circuit Q1；
Power supply is to be powered with the branch road that variable resistance block coupled in series is formed by LED, on-off circuit and variable resistance wired in parallel,
On-off circuit is controlled by the signal of communication of controller output；The resistance of variable resistance module is controlled by the switching letter of controller output
Number；
The circuit structure of switching circuit is described below as a example by the resistance switching circuit of 8 resistance:
Described variable resistance module is the resistance switching circuit being made up of 8 resistance and multiselect one analog switch；Described multiselect
One analog switch has 8 inputs and 1 outfan；Variable resistance module has 3 and controls end, and 3 control end (i.e. Fig. 2
In A, B and C) connect 3 I/O port of controller respectively；The resistance of any two resistance is different.
8 inputs of multiselect one analog switch are connected to common point P, multiselect one mould by 8 described resistance respectively
The outfan intending switch is connected to common point S；P point and 2 end points that S point is variable resistance module；Arbitrarily gating multiselect one mould
Intend a passage of switch, then have a resistance to connect between P and S point.
The resistance of 8 resistance is respectively R, 2R, 3R ..., 7R and 8R, and R is resistance value, such as 100 ohm, or 1 kilohm.
Or, the resistance of 8 resistance is respectively R, 2R, 4R ..., 128R, and R is resistance value, such as 10 ohm, 100 Europe
Nurse, or 1 kilohm.
Controller is also associated with light intensity detection circuit.The foregoing is only presently preferred embodiments of the present invention, and need not
To limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, all should wrap
Within being contained in protection scope of the present invention.
Claims (7)
1. a visible light communication device based on analog switch switching control, it is characterised in that include power supply, controller, LED
Lamp, variable resistance module (Rx) and on-off circuit (Q1)；
Power supply is to be powered with the branch road that variable resistance block coupled in series is formed by LED, on-off circuit and variable resistance wired in parallel,
On-off circuit is controlled by the signal of communication of controller output；The resistance of variable resistance module is controlled by the switching letter of controller output
Number；
Described variable resistance module is the resistance switching circuit being made up of 2^N resistance and multiselect one analog switch；Described many
An analog switch is selected to have 2^N input and 1 outfan；N is the natural number more than 2；^ is power symbol, and 2^i represents 2
I power；Variable resistance module has N number of control end, and N number of control end connects N number of I/O port of controller respectively；Any two electricity
The resistance of resistance is different.
Visible light communication device based on analog switch switching control the most according to claim 1, it is characterised in that multiselect
2^N input of one analog switch is connected to common point P by 2^N described resistance respectively, multiselect one analog switch
Outfan is connected to common point S；P point and 2 end points that S point is variable resistance module；Arbitrarily gate multiselect one analog switch
One passage, then have a resistance to connect between P and S point.
Visible light communication device based on analog switch switching control the most according to claim 2, it is characterised in that N is
3, resistance is 8, and multiselect one analog switch is that eight to select a variable connector, the control end of multiselect one analog switch be 3.
Visible light communication device based on analog switch switching control the most according to claim 2, it is characterised in that N is
4, resistance is 16, and multiselect one analog switch is that 16 to select a variable connector, the control end of multiselect one analog switch be 4.
5. according to the visible light communication device based on analog switch switching control described in any one of claim 1-4, its feature
Being, the resistance of 2^N resistance is respectively R, 2R, 3R ..., (2^N-1) * R and 2^N*R, and R is resistance value.
6. according to the visible light communication device based on analog switch switching control described in any one of claim 1-4, its feature
Being, the resistance of 2^N resistance is respectively R, 2R, 4R ..., 2^(2^N-2) * R and 2^(2^N-1) * R, R be resistance value.
7. according to the visible light communication device based on analog switch switching control described in any one of claim 1-4, its feature
Being, controller is also associated with light intensity detection circuit, for detecting the background luminance of site environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467484.XA CN106067843A (en) | 2016-06-24 | 2016-06-24 | A kind of visible light communication device based on analog switch switching control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467484.XA CN106067843A (en) | 2016-06-24 | 2016-06-24 | A kind of visible light communication device based on analog switch switching control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106067843A true CN106067843A (en) | 2016-11-02 |
Family
ID=57420615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610467484.XA Pending CN106067843A (en) | 2016-06-24 | 2016-06-24 | A kind of visible light communication device based on analog switch switching control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106067843A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873108A (en) * | 2009-04-21 | 2010-10-27 | 上海线友电子有限公司 | Terminal resistor automatic match circuit in gas detector |
| CN101946285A (en) * | 2008-12-18 | 2011-01-12 | 松下电器产业株式会社 | Nonvolatile storage device and method for writing into the same |
| CN203118409U (en) * | 2012-10-17 | 2013-08-07 | 南京信息工程大学 | Self-adapting brightness adjusting LED display system |
| 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 |
| CN204884478U (en) * | 2015-08-18 | 2015-12-16 | 天津乐触科技有限公司 | Outdoor LED advertisement machine |
| CN105355173A (en) * | 2015-12-10 | 2016-02-24 | 武汉华星光电技术有限公司 | LED backlight color temperature adjustment circuit and display device therewith |
| CN105606133A (en) * | 2016-01-28 | 2016-05-25 | 东南大学 | Resistive sensor array test circuit based on two-wire system voltage feedback |
| CN105632459A (en) * | 2016-03-28 | 2016-06-01 | 山东超越数控电子有限公司 | Computer display screen brightness adaptive adjustment method |
-
2016
- 2016-06-24 CN CN201610467484.XA patent/CN106067843A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946285A (en) * | 2008-12-18 | 2011-01-12 | 松下电器产业株式会社 | Nonvolatile storage device and method for writing into the same |
| CN101873108A (en) * | 2009-04-21 | 2010-10-27 | 上海线友电子有限公司 | Terminal resistor automatic match circuit in gas detector |
| CN203118409U (en) * | 2012-10-17 | 2013-08-07 | 南京信息工程大学 | Self-adapting brightness adjusting LED display system |
| 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 |
| CN204884478U (en) * | 2015-08-18 | 2015-12-16 | 天津乐触科技有限公司 | Outdoor LED advertisement machine |
| CN105355173A (en) * | 2015-12-10 | 2016-02-24 | 武汉华星光电技术有限公司 | LED backlight color temperature adjustment circuit and display device therewith |
| CN105606133A (en) * | 2016-01-28 | 2016-05-25 | 东南大学 | Resistive sensor array test circuit based on two-wire system voltage feedback |
| CN105632459A (en) * | 2016-03-28 | 2016-06-01 | 山东超越数控电子有限公司 | Computer display screen brightness adaptive adjustment method |
Non-Patent Citations (1)
| Title |
|---|
| 刘春艳主编: "《电子技术基础》", 31 March 2016 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106304518A (en) | A kind of regulate LED colour temperature or the control circuit of brightness and method | |
| CN201191933Y (en) | LED regulating device with color temperature and color rendering adjustable | |
| CN104883789A (en) | Constant-current control circuit for LED display device and display device | |
| CN104918368A (en) | Colored lamp driving circuit and vehicle-mounted key backlight device | |
| CN106686832B (en) | A kind of diode control circuit and switching power circuit | |
| CN106067843A (en) | A kind of visible light communication device based on analog switch switching control | |
| CN106130650A (en) | A kind of visible light communication control method based on analog switch switching | |
| CN204130091U (en) | The charactron of integrated signal lamp and electronic equipment | |
| CN106130651A (en) | A kind of visible light communication device based on multistage light adjusting circuit | |
| CN207505176U (en) | A kind of biometrics multichannel Linear Control module and system | |
| CN206490857U (en) | The adjustable discoloration LED multi-path indicating circuit of brightness on a kind of automobile center console | |
| CN105978625A (en) | Visible light communication device with resistor array | |
| CN203554760U (en) | Bimodal light modulation circuit and illumination equipment | |
| CN209472805U (en) | A kind of LED illumination device circuit and lighting apparatus | |
| CN205827187U (en) | A kind of LED light source digitial controller | |
| CN207440481U (en) | The liquid crystal display device of intelligent dimming | |
| CN203167366U (en) | Backlight circuit and backlight keyboard | |
| CN201170944Y (en) | LED display control device | |
| CN206061203U (en) | Control device and light fixture | |
| CN104009798B (en) | A kind of visible light communication equipment and system | |
| CN203884023U (en) | Illumination driving system | |
| CN205726552U (en) | A kind of control circuit of the light fixture with multibeam optical system | |
| CN106027145A (en) | Visible light communication switching and controlling method | |
| CN201688232U (en) | LED light source used for seriplane neatness testing | |
| CN104066236A (en) | Lamplight device for automatically adjusting light beams |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161102 |
|
| RJ01 | Rejection of invention patent application after publication |