CN109219196A - The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit - Google Patents
The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit Download PDFInfo
- Publication number
- CN109219196A CN109219196A CN201811198618.8A CN201811198618A CN109219196A CN 109219196 A CN109219196 A CN 109219196A CN 201811198618 A CN201811198618 A CN 201811198618A CN 109219196 A CN109219196 A CN 109219196A
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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]
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses the LED light bars of a kind of reverse-connection preventing circuit of dual input serially concatenated and the application circuit, belong to LED lamp field comprising power supply, main control chip and multiple sub-control chips；The data input pin of sub-control chip is connect with the data output end of upper sub-control chip, and sub-control chip data output end is connect with the data input pin of next sub-control chip；The preliminary data input terminal of next sub-control chip is connect with the data output end of upper sub-control chip；After mutually concatenating between multiple sub-control chips, the data input pin of the sub-control chip of head end receives the data input of main control chip；When single sub-control wafer damage or the sub-control wafer damage being spaced apart from each other, interval transmission data can be realized by preliminary data input terminal；Single sub-control wafer damage does not influence follow-up data；And it is connected in parallel on power supply respectively after the power input and Diode series of each sub-control chip；When being reversely connected, diode separates power supply and sub-control chip, and circuit will not be burned, after just connecing entire circuit may continue to using.
Description
Technical field
The present invention relates to LED lamp fields, specifically should for a kind of reverse-connection preventing circuit of dual input serially concatenated and application
The LED light bar of circuit.
Background technique
LED light bar is to do assembling wiring board with PCB hardboard, with the light bar that paster LED or straight cutting LED are assembled, depending on needing
Otherwise with and using different elements；Lamp bar paster LED has 18 LED, 24 LED, 30 LED, 36 LED, 40
The good plurality of specifications such as LED；There are the different sizes such as 18,24,36,48 with straight cutting LED, having positive also has side
, lateral emitting is called Wall-shaped lamp strip；LED light bar have been widely used for now furniture, automobile, advertisement, illumination, steamer with
And the industries such as house decoration；Specifically, household undercut fringing such as doorframe, bar desk, wine cabinet, wardrobe, cabinet for TV etc.；Car detailing is such as
Car body, vehicle bottom；City outline brightening includes the decoration such as building, advertising wall, signboard, Christmas landscape；The decoration of irregular design body
Such as hotel, nightclub, the polygon wall in the place KTV, water droplet and smallpox groove design.
Usually there are problems that two in existing LED light, first is the problem of lamp is burnt in reversal connection, during electric wire, if because
It will cause for operation error after being reversely connected power positive cathode, whole LED lamp bead can be all burned；However to guarantee thus
LED lamp bead does not occur operation error in wiring and is nearly impossible；Second due to being usually using string inside LED lamp bead
The mode of connection all can cause whole light bar not work after any one lamp bead damage；Conventional anti-reverse means are by two at present
Pole pipe or the realization of mos pipe are anti-reverse, but can not solve single lamp bead damage simultaneously does not influence whole lamp bar and anti-reverse two
A problem.
Summary of the invention
Shortcoming present in view of the above technology, the present invention provide a kind of reverse-connection preventing circuit of dual input serially concatenated
And the LED light bar using the circuit, LED light can not only be prevented to be burned in reversal connection, and after single lamp bead is damaged, do not influence
The use of whole lamp bar.
To achieve the above object, the present invention provides a kind of reverse-connection preventing circuit of dual input serially concatenated, including power supply, master control
Chip and multiple sub-control chips；The sub-control chip is equipped with power input, data output end, data input pin, power supply output
End and preliminary data input terminal；The data input pin of the sub-control chip is connect with the data output end of upper sub-control chip, institute
Sub-control chip data output end is stated to connect with the data input pin of next sub-control chip；The preliminary data of next sub-control chip
Input terminal is connect with the data output end of upper sub-control chip；After mutually being concatenated between multiple sub-control chips, the sub-control core of head end
The data input pin of piece receives the data input of main control chip；And divide after the power input and Diode series of each sub-control chip
It is not connected in parallel on the power supply.
Wherein, the diode cathode is connect with positive pole, the power input of the diode cathode and sub-control chip
End connection.
Wherein, the sub-control chip uses TX1813A chip.
Wherein, be additionally provided with light emitting diode in the TX1813A chip, the light emitting diode be located at the diode with
Between the power input, and the light emitting diode anode connects the diode cathode, the light emitting diode cathode
It is connect with the power input.
Wherein, the direct-current blocking-up voltage of diode is 10V, and the operating voltage of the sub-control chip is 5V.
Wherein, the power output end is connect with the power cathode, the power input and the power cathode it
Between be additionally provided with capacitance group in parallel.
Wherein, resistance is additionally provided between the data output end and the preliminary data input terminal.
To achieve the goals above, the present invention also provides a kind of LED light bars, including the anti-reverse of dual input serially concatenated
The reverse-connection preventing circuit of circuit and shell, the dual input serially concatenated is placed in the shell.
The beneficial effects of the present invention are: compared with prior art, the present invention includes power supply, main control chip and multiple sub-control cores
Piece；The data input pin of sub-control chip is connect with the data output end of upper sub-control chip, and sub-control chip data output end is under
The data input pin of one sub-control chip connects；The preliminary data input terminal of next sub-control chip and the data of upper sub-control chip are defeated
Outlet connection；After mutually concatenating between multiple sub-control chips, the data input pin of the sub-control chip of head end receives main control chip
Data input；When single sub-control wafer damage or the sub-control wafer damage being spaced apart from each other, preliminary data input terminal can be passed through
Realize interval transmission data；To which single sub-control chip or lamp bead damage do not influence follow-up data；And the power supply of each sub-control chip
It is connected in parallel on power supply respectively after input terminal and Diode series；But when being reversely connected due to operation error, diode separates power supply
With sub-control chip, circuit will not be burned, after just connecing entire circuit may continue to using.
Detailed description of the invention
Fig. 1 is circuit overall structure figure of the invention；
Fig. 2 is sub-control chip circuit figure of the invention.
Main element symbol description is as follows:
DIN, data input pin；DO, data output end；GND；Power output end；VDD, power input；FDIN, spare number
According to input terminal；NC, sky connect；U1, sub-control chip；R1, resistance；C, capacitor；D1, diode；D2, light emitting diode.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described with reference to the accompanying drawing.
Fig. 1 and Fig. 2 are please referred to, the present invention provides a kind of reverse-connection preventing circuit of dual input serially concatenated, including power supply, master control
Chip and multiple sub-control chip U1；Sub-control chip U1 be equipped with power input VDD, data output end DO, data input pin DIN,
Power output end GND and preliminary data input terminal FDIN；The data input pin DIN's of sub-control chip U1 and upper sub-control chip U1
Data output end DO connection, sub-control chip U1 data output end DO are connect with the data input pin DIN of next sub-control chip U1；Under
The preliminary data input terminal FDIN of one sub-control chip U1 is connect with the data output end DO of upper sub-control chip U1；Multiple sub-control cores
After mutually concatenating between piece U1, the data input pin DIN of the sub-control chip U1 of head end receives the data input of main control chip；And it is each
The power input VDD of sub-control chip U1 is connected in parallel on the power supply respectively after connecting with diode D1.
In the present embodiment, diode D1 anode is connect with positive pole, the electricity of diode D1 cathode and sub-control chip U1
Source input terminal VDD connection, the direct-current blocking-up voltage of diode D1 are 10V, and the operating voltage of sub-control chip U1 is 5V；Power supply just connects
It is diode D1 conducting, when reverse power connection, diode D1 is in an off state；Realize anti-reverse burning lamp；Sub-control chip U1 is point
It controls chip U1 and uses TX1813A chip, which is the intelligent external control LED for integrating control circuit and illuminating circuit
Light source；Light emitting diode D2 is equipped in TX1813A chip, light emitting diode D2 is located at diode D1 and the power input
Between VDD, and light emitting diode D2 cathode connecting diode D1 cathode, light emitting diode D2 cathode and power input VDD connect
It connects；Light emitting diode D2 is simultaneously turned on diode D1；Specific Light-Emitting Diode includes three kinds of red, green and blue, different colours
Light emitting diode D2 between it is parallel with one another；Intelligent digital interface data latch signal shaping is further comprised inside one single chip to put
Big driving circuit, power supply stabilization circuit, built-in constant-current circuit, high-precision RC oscillator, output driving use patent PWM skill
The high consistency of color of light in pixel has been effectively ensured in art.
In the present embodiment, power output end GND is connect with power cathode, between power output end GND and power cathode
It is additionally provided with capacitor C group in parallel, plays the role of decoupling, is posted caused by the positive feedback path that can prevent circuit from being formed by power supply
Raw oscillation；When preventing front and back circuital current size variation, the current fluctuation formed in power supply circuit is to the normal of circuit
Work has an impact, and in other words, decoupling capacitance C can effectively eliminate the parasitic couplings between circuit；So that the brightness of lamp bead
Be not in fluctuation, shine always uniform；Between data output end DO and preliminary data input terminal FDIN and data output end
Resistance R1 is equipped between DO and data input pin DIN, resistance R1 inhibits signal reflex, that is, absorbs the signal of reflection, be both to mention
High anti-jamming capacity and prevent communication port from being broken by twinkling signal.
In the present embodiment, which can apply in a kind of LED light bar, the reverse-connection preventing circuit of dual input serially concatenated
It is placed in the shell of lamp bar；When just connecing, for chip after electrification reset, sub-control chip U1 data input pin DIN receives master control
The data of chip transmission, after 24 bit that can't stand any longer, data transmission port starts to forward data, is transmitted to next sub-control chip U1
Data input pin DIN, before forwarding, the data output of sub-control chip U1 drags down always.Sub-control chip U1 at this time
It will not receive new data, for three light emitting diode D2 according to signal of the data receiver to different duty is received, the signal is all
Phase is in 4 ms；Next sub-control chip U1, can also be directly by spare other than directly receiving the output data of sub-control chip U1
Data input pin FDIN directly acquires the data of sub-control chip U1 data input pin DIN；Namely upper sub-control chip U1's is defeated
Data out, if a certain chips damage, or after the sub-control chip U1 damage being spaced apart from each other, do not influence data transmission, after
Continuous chip remains to normally receive data；When reverse power connection, diode disconnects the connection between sub-control chip U1 and power supply, each sub-control
Chip U1 does not work, will not be damaged, may continue to after just connecing using；Entire LED band has low voltage drive, environmental protection section
The advantages that energy, brightness is high, and scattering angle is big, and consistency is good, ultra low power, extra long life；Control circuit is integrated on LED
Face, circuit becomes simpler, small in size, installs easier.
Present invention has an advantage that
1, after mutually concatenating between multiple sub-control chips, the data input pin of the sub-control chip of head end receives the data of main control chip
Input；When single sub-control wafer damage or the sub-control wafer damage being spaced apart from each other, it can be realized by preliminary data input terminal
Interval transmission data；To which single sub-control chip or lamp bead damage do not influence follow-up data；
2, it is connected in parallel on power supply respectively after the power input and Diode series of each sub-control chip；But since operation error occurs
When reversal connection, diode separates power supply and sub-control chip, and circuit will not be burned, after just connecing entire circuit may continue to using.
Disclosed above is only several specific embodiments of the invention, but the present invention is not limited to this, any ability
What the technical staff in domain can think variation should all fall into protection scope of the present invention.
Claims (8)
1. a kind of reverse-connection preventing circuit of dual input serially concatenated, which is characterized in that including power supply, main control chip and multiple sub-control cores
Piece；The sub-control chip is equipped with power input, data output end, data input pin, power output end and preliminary data input
End；The data input pin of the sub-control chip is connect with the data output end of upper sub-control chip, and the sub-control chip data is defeated
Outlet is connect with the data input pin of next sub-control chip；The preliminary data input terminal of next sub-control chip and a upper sub-control
The data output end of chip connects；After mutually concatenating between multiple sub-control chips, the data input pin of the sub-control chip of head end is connect
Receive the data input of main control chip；And it is connected in parallel on the power supply respectively after the power input and Diode series of each sub-control chip
On.
2. the reverse-connection preventing circuit of dual input serially concatenated according to claim 1, which is characterized in that the diode cathode
It is connect with positive pole, the diode cathode is connect with the power input of sub-control chip.
3. the reverse-connection preventing circuit of dual input serially concatenated according to claim 1, which is characterized in that the sub-control chip is adopted
With TX1813A chip.
4. the reverse-connection preventing circuit of dual input serially concatenated according to claim 2 or 3, which is characterized in that the TX1813A
Light emitting diode is additionally provided in chip, the light emitting diode is between the diode and the power input, and institute
It states light emitting diode anode and connects the diode cathode, the light emitting diode cathode is connect with the power input.
5. the reverse-connection preventing circuit of dual input serially concatenated according to claim 1, which is characterized in that the direct current of diode hinders
Power-off pressure is 10V, and the operating voltage of the sub-control chip is 5V.
6. the reverse-connection preventing circuit of dual input serially concatenated according to claim 1, which is characterized in that the power output end
It is connect with the power cathode, capacitance group in parallel is additionally provided between the power input and the power cathode.
7. the reverse-connection preventing circuit of dual input serially concatenated according to claim 1, which is characterized in that the data output end
Resistance is additionally provided between the preliminary data input terminal.
8. a kind of LED light bar, reverse-connection preventing circuit including the described in any item dual input serially concatenateds of claim 1-7 and outer
The reverse-connection preventing circuit of shell, the dual input serially concatenated is placed in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198618.8A CN109219196A (en) | 2018-10-15 | 2018-10-15 | The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198618.8A CN109219196A (en) | 2018-10-15 | 2018-10-15 | The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit |
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| Publication Number | Publication Date |
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| CN109219196A true CN109219196A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811198618.8A Pending CN109219196A (en) | 2018-10-15 | 2018-10-15 | The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932964A (en) * | 2019-04-13 | 2019-06-25 | 上海亿算科技有限公司 | A kind of calculation power chip and calculation power chip system of connecting |
| CN110120198A (en) * | 2019-05-10 | 2019-08-13 | 深圳市惠博升科技有限公司 | A kind of LED lamp bead, LED display system and LED display |
| CN110381642A (en) * | 2019-08-07 | 2019-10-25 | 深圳市智童乐慧科技有限公司 | A kind of splicing lamp |
| CN112186718A (en) * | 2020-09-03 | 2021-01-05 | 四川遂宁市利普芯微电子有限公司 | Protection circuit for preventing reverse connection breakdown of power supply |
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| CN205566728U (en) * | 2016-03-21 | 2016-09-07 | 珠海市昱华电子科技有限公司 | Touch -sensitive luminescent plate |
| CN108430135A (en) * | 2018-04-24 | 2018-08-21 | 华域视觉科技(上海)有限公司 | A kind of sequential starting controlling circuit, lighting device and lighting system |
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| CN201000023Y (en) * | 2007-01-16 | 2008-01-02 | 钟再柏 | Flexible pipe lamp having flowing flicker effect |
| CN101545591A (en) * | 2008-03-26 | 2009-09-30 | 北京巨数数字技术开发有限公司 | PCB light bar used in LED display and transmission control system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932964A (en) * | 2019-04-13 | 2019-06-25 | 上海亿算科技有限公司 | A kind of calculation power chip and calculation power chip system of connecting |
| CN110120198A (en) * | 2019-05-10 | 2019-08-13 | 深圳市惠博升科技有限公司 | A kind of LED lamp bead, LED display system and LED display |
| CN110381642A (en) * | 2019-08-07 | 2019-10-25 | 深圳市智童乐慧科技有限公司 | A kind of splicing lamp |
| CN112186718A (en) * | 2020-09-03 | 2021-01-05 | 四川遂宁市利普芯微电子有限公司 | Protection circuit for preventing reverse connection breakdown of power supply |
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Application publication date: 20190115 |
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