CN108650751A - A kind of color LED lamp bead of two lines communication - Google Patents
A kind of color LED lamp bead of two lines communication Download PDFInfo
- Publication number
- CN108650751A CN108650751A CN201810809788.9A CN201810809788A CN108650751A CN 108650751 A CN108650751 A CN 108650751A CN 201810809788 A CN201810809788 A CN 201810809788A CN 108650751 A CN108650751 A CN 108650751A
- Authority
- CN
- China
- Prior art keywords
- lamp bead
- color led
- led lamp
- chip
- communication
- 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.)
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Classifications
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- 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
Abstract
The present invention discloses a kind of color LED lamp bead of two lines communication, the enclosure interior be packaged with control chip for judging communication coding, the tri- kinds of colors of RGB being electrically connected with the control chip lamp bead chip, and the power and ground drawn by controlling the positive and negative anodes of chip, the state of color LED lamp bead is controlled by modulating ground wire or power cord and being communicated to realize.Color LED lamp bead of the present invention can complete communication process by two lines, when forming lamp string, simplify the cumbersome of cabling and economize on line cost.On the other hand since controlled circuit is all integrated into inside color LED lamp bead so that peripheral control circuits become simpler and small.
Description
Technical field
The invention belongs to LED lights communication technique fields, and in particular to a kind of color LED lamp bead of two lines communication.
Background technology
When preparing the product of color LED lamp string, common packaged colored controllable LED lamp bead is typically three leads
Or it is more, include a signal wire, a power cord, also a ground wire by taking three leads as an example.It is making in this way
3 lines are required when lamp string, production cost is higher, and cabling is also troublesome.
Invention content
The technical problem to be solved by the invention is to provide a kind of color LED lamp beads of two line communication, solve existing skill
The technical problem that lamp string causes production cost high due to number of leads problem in art.
In order to solve the above technical problems, the technical solution adopted by the present invention：A kind of color LED lamp bead of two lines communication, packet
Include shell, the RGB that the enclosure interior is packaged with control chip for judging communication coding, is electrically connected with the control chip
The lamp bead chip of three kinds of colors, and by control chip positive and negative anodes draw power and ground, by modulate ground wire or
Power cord communicates the state for controlling color LED lamp bead in turn to realize.
In one embodiment, the peripheral control circuits of the color LED lamp bead include microcontroller chip, resistance R with
And NPN type triode U, one end of the output end connection resistance R of microcontroller chip, the base of the other end connecting triode U of resistance R
Pole, the emitter ground connection of triode U, the multiple color LED lamp bead anodes of serial or parallel connection together connect power supply, cathode
Connect the collector of the triode U.
In one embodiment, described for judging that the Principle of Communication of the control chip of communication coding is：Work as color LED
When lamp bead power on/off, it is encapsulated in the control chip inside color LED lamp bead judges it is 0 according to the interval time of power on/off twice
Code, 1 yard or invalid code.
In one embodiment, include 6 codes, 7 codes, the color LED lamp of 8 codes and 12 codes according to function difference
Pearl.
In one embodiment, the control built-in chip type test pattern, after the energization of color LED lamp bead, if temporarily
Communication signal then testing results pattern is not received.
In one embodiment, after the control chip receives communication signal, judge whether to receive complete coding,
If it is not, coding is then reexamined, if so, running the corresponding function of the coding.
Beneficial effects of the present invention：Color LED lamp bead of the present invention can complete communication process, group by two lines
When at lamp string, simplifies the cumbersome of cabling and economize on line cost.On the other hand since controlled circuit is all integrated into color LED
Inside lamp bead so that peripheral control circuits become simpler and small.
Description of the drawings
Fig. 1 is the overall structure diagram for the color LED lamp bead that two lines communicate in the present embodiment；
Peripheral circuit application drawing when Fig. 2 is the color LED lamp bead parallel connection that two lines communicate in the present embodiment；
The color LED lamp bead code value figure that Fig. 3 is two in the present embodiment.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of color LED lamp bead of two lines communication, as shown in Figure 1, including shell 1, which is useful for sentencing
The control chip 2 of disconnected communication coding, the lamp bead chip of the tri- kinds of colors of RGB being electrically connected with the control chip 2, and pass through control
The power cord 3 and ground wire 4 that the positive and negative anodes of chip are drawn are controlled colored by modulating ground wire 4 or power cord 3 and being communicated to realize
The state of LED lamp bead.Control chip 2 is integrated in inside lamp bead so that peripheral control circuits become simpler.
With reference to figure 2, the peripheral control circuits of the color LED lamp bead include three pole of microcontroller chip, resistance R and NPN type
Pipe U, one end of the output end connection resistance R of microcontroller chip, the base stage of the other end connecting triode U of resistance R, triode U
Emitter ground connection, serial or parallel connection multiple color LED lamp bead anodes together connect power supply, and cathode connects the triode
The collector of U.When the output end voltage of microcontroller chip is 0, it is in cut-off state, does not have electric current in circuit.Work as microcontroller
When the output end voltage of chip is not 0, triode U conductings are equivalent to be joined with color LED lamp bead string, and electric current is generated in circuit, more
The color LED lamp bead of a serial or parallel connection together completes power up.
Further, after the color LED lamp bead of multiple serial or parallel connections together completes power up, due to the colour
The 2 built-in testing pattern of control chip of LED lamp bead, the testing results pattern if temporarily not receiving communication signal.Test pattern is
The lamp bead cycling jump of different model shows different colors, such as 939 lamp beads are warm whites, and 929 be cool white, and 919 are
RGB.After the control chip receives communication signal, then further determine whether to receive complete coding, it is poor according to function
Extraordinary splendor color LED lamp bead includes 6 codes, 7 codes, 8 codes and 12 codes.If imperfect, coding is reexamined, until obtaining
To the coding of complete digit, then the corresponding function of the coding is run.
Specifically, this is used to judge that the Principle of Communication of the control chip 2 of communication coding to be：When color LED lamp bead power on/off
When, it is encapsulated in the control chip inside color LED lamp bead judges it is 0 yard, 1 yard or nothing according to the interval time of power on/off twice
Imitate code.With reference to figure 3, when setting reseting interval is 5ms, chip is considered 0, when reseting interval is 15ms, and chip is considered 1, when
Then it is invalid code when more than 20ms or less than 2ms.500uS is the time that electricity is disconnected to color LED lamp bead, the judgement of code value
To be controlled by chip interior, range can be adjusted voluntarily, the code value in figure be two, i.e., 01.6 codes known to similarly, 7
Code, the color LED lamp bead oscillogram of 8 codes and 12 codes.
Beneficial effects of the present invention：Color LED lamp bead of the present invention can complete communication process, group by two lines
When at lamp string, simplifies the cumbersome of cabling and economize on line cost.On the other hand since controlled circuit is all integrated into color LED
Inside lamp bead so that peripheral control circuits become simpler and small.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (6)
1. a kind of color LED lamp bead of two lines communication, including shell, which is characterized in that the enclosure interior is packaged with for sentencing
The lamp bead chip of the control chip of disconnected communication coding, the tri- kinds of colors of RGB being electrically connected with the control chip, and pass through control
The power and ground that the positive and negative anodes of chip are drawn controls color LED by modulating ground wire or power cord and being communicated to realize
The state of lamp bead.
2. the color LED lamp bead of two lines communication according to claim 1, it is characterised in that：The periphery of the color LED lamp bead
Control circuit includes microcontroller chip, resistance R and NPN type triode U, and the output end of microcontroller chip connects the one of resistance R
End, the base stage of the other end connecting triode U of resistance R, the emitter ground connection of triode U, serial or parallel connection together multiple
The color LED lamp bead anode connects power supply, and cathode connects the collector of the triode U.
3. the color LED lamp bead of two lines communication according to claim 1, it is characterised in that：It is described to be used to judge communication coding
The Principle of Communication of control chip be：When color LED lamp bead power on/off, the control chip that is encapsulated in inside color LED lamp bead
Judge it is 0 yard, 1 yard or invalid code according to the interval time of power on/off twice.
4. the color LED lamp bead of two lines communication according to claim 1, it is characterised in that：It include 6 according to function difference
Code, 7 codes, the color LED lamp bead of 8 codes and 12 codes.
5. the color LED lamp bead of two lines communication according to claim 1, it is characterised in that：The control built-in chip type test
Pattern, after the energization of color LED lamp bead, the testing results pattern if temporarily not receiving communication signal.
6. the color LED lamp bead of the two lines communication according to claim 4 or 5, it is characterised in that：The control chip receives
After communication signal, judge whether to receive complete coding, if it is not, coding is then reexamined, if so, it is corresponding to run the coding
Function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809788.9A CN108650751A (en) | 2018-07-23 | 2018-07-23 | A kind of color LED lamp bead of two lines communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809788.9A CN108650751A (en) | 2018-07-23 | 2018-07-23 | A kind of color LED lamp bead of two lines communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108650751A true CN108650751A (en) | 2018-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809788.9A Pending CN108650751A (en) | 2018-07-23 | 2018-07-23 | A kind of color LED lamp bead of two lines communication |
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