CN108770123A - A kind of control method of full-color LED lamp band - Google Patents
A kind of control method of full-color LED lamp band Download PDFInfo
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- CN108770123A CN108770123A CN201810621705.3A CN201810621705A CN108770123A CN 108770123 A CN108770123 A CN 108770123A CN 201810621705 A CN201810621705 A CN 201810621705A CN 108770123 A CN108770123 A CN 108770123A
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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]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- 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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to LED light product technical field, the control method of a kind of full-color LED lamp band or lamp string is refered in particular to.The control method is：One group or multigroup negative narrow pulse signal are generated on power supply, the negative narrow pulse signal forms one group of coding, the coding includes the address code and numeric data code of all parallel connection LEDs, and shining for each LED in light bar is controlled using the pulse address code and numeric data code that are sent out on power bus；The corresponding address code of LED Auto-matchings on i.e. all access power bus and numeric data code, corresponding variation is realized according to the difference of coding.After above-mentioned technical proposal, the present invention is with respect to the advantages of existing product, the light bar or lamp string made through the invention, due to without excessive line, each lamps and lanterns are externally only with two power cords of setting simultaneously, and enabling the structure of product in this way, the volume of product can be minimized into simple, and it produces simply, wire rod and cost of labor can be greatlyd save.
Description
Technical field：
The present invention relates to LED light product technical field, the control method of a kind of full-color LED lamp band or lamp string is refered in particular to.
Background technology：
In current seven color synchronous LED products, conventional has following two control models.
The first is RGB three primary colours bus types, in LED light, every group of all red LEDs resistance of series connection one, then
It is connected in parallel in R buses；Every group of all green LEDs resistance of series connection one, is then connected in parallel in G buses；All blue leds are every
Group one resistance of series connection, is then connected in parallel in B buses；Along with an at least power bus.Externally just there are four buses in this way.
LED light can connect, in parallel, and connection in series-parallel realizes all LED styles synchronous controls by peripheral control unit.This mode is mesh
Preceding most common seven color synchronous LED product working method.Its existing deficiency is：It produces cumbersome.With the promotion of human cost.
It is gradually expensive using the LED product production cost of this operating mode.The production capacity of this product is difficult to be promoted simultaneously, while resistance
It is more with line, high failure rate.Additionally there are small product sizes to minimize, and LED is unable to current constant control, between every group of lamps and lanterns
Consistency cannot be guaranteed.
Second is seven firework samples built in each pixel, is powered using AC power, utilizes the 50HZ- of AC power
The sine wave signal of 60HZ is as synchronizing signal.This working method, the use also very universal in large LED lamps and lanterns.But
It is also to have several significant drawbacks：LED lamp is powered it is desirable that direct current, direct current will be converted into after AC power rectification by, which needing, supplies electricity to
Lamps and lanterns are powered, and component is more in circuit, and lamps and lanterns volume can not minimize；Efficiency is low, and energy consumption is very big, not energy-efficient.
The present inventor, by constantly researching and developing, proposes following technical scheme to overcome the shortcomings of present in existing product.
Invention content：
Technical problem to be solved by the present invention lies in deficiency of the prior art is overcome, a kind of producer is provided
Just, the control method of a kind of cost-effective full-color LED lamp band or lamp string.
In order to solve the above-mentioned technical problem, present invention employs following technical proposals：A kind of controlling party of full-color LED lamp band
Method, it is characterised in that：One group or multigroup negative narrow pulse signal are generated on power supply, which forms one group of volume
Code, the coding include the address code and numeric data code of all parallel connection LEDs, utilize the pulse address code and data sent out on power bus
Code controls the luminous of each LED in light bar；The corresponding address code of LED Auto-matchings on i.e. all access power bus
And numeric data code, corresponding variation is realized according to the difference of coding.
Furthermore, in above-mentioned technical proposal, each LED uses RGB tri coloured lanterns.
Furthermore, in above-mentioned technical proposal, when coded address code uses 6 bit address codes, every group of volume on power bus
The format of code is as follows：
A0A1A2A3A4A5D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5 D6D7E are wherein：
A0A1A2A3A4A indicates 6 bit address codes, addressable ranging from 26=64 groups LED；
D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D includes three groups of 8 data encodings, table
Show the data of three street lamp R, G, B in corresponding RGB tri coloured lanterns, realizes 28=256 grades of light modulations；
E is expressed as end code.
Alternatively, when for coded address code using 8 bit address codes, the format of every group of coding is as follows on power bus：
A0A1A2A3A4A5A6A7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3 D4D5D6D7E its
In：A0A1A2A3A4A A6A7 indicate 8 bit address codes, addressable ranging from 28=256 groups LED；
D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D includes three groups of 8 data encodings, table
Show the data of three street lamp R, G, B in corresponding RGB tri coloured lanterns, realizes 28=256 grades of light modulations；
E is expressed as end code.
Furthermore, in above-mentioned technical proposal, the end code indicates operation level.
Furthermore, in above-mentioned technical proposal, it is to the pulse signal extracting mode generated on power supply：First to power supply
Voltage Vdd is divided, and is then compared the voltage after the partial pressure with a stable reference voltage V ref, is generated 0 and is arrived
The data-signal of vdd overturnings.
The operation principle of the present invention is that：It is full-color to control using the pulse address code and numeric data code that are sent out on power bus
LED light string or light bar, according to the difference of coding, 6 bit address codes at most can and connect 64 different address position lamp beads, 8 bit address codes
It at most can and connect the lamp bead that different address is in 256.Corresponding RGB data is written in each LED lamp bead, it is each to realize
Dynamic change between LED light string or light bar completes various styles.
After adopting the above technical scheme, the present invention is with respect to the advantages of existing product, the light bar made through the invention
Or lamp string, due to without excessive line, while each lamps and lanterns enable product so externally only with two power cords of setting
Structure into simple, the volume of product can minimize, and produce simple, can greatly save wire rod and cost of labor.
Description of the drawings：
Fig. 1 is the negative narrow pulse signal figure of power bus that one group of coding of the invention is all 0；
Fig. 2 is the negative narrow pulse signal figure of power bus that one group of coding of the invention is all 1；
Fig. 3 is that power bus of the present invention bears burst pulse digital simulation pretreatment circuit diagram.
Specific implementation mode：
With reference to specific embodiments and the drawings, the present invention is further described.
The present invention is a kind of control method of full-color LED lamp band, which is that one group or more is generated on power supply
The negative narrow pulse signal of group, the negative narrow pulse signal form one group of coding, which includes the address code and data of all parallel connection LEDs
Code controls the luminous of each LED in light bar using the pulse address code and numeric data code that are sent out on power bus；I.e. all accesses
The corresponding address code of LED Auto-matchings on power bus and numeric data code realize corresponding variation according to the difference of coding.
The coding mode in the control method is further detailed below, control method of the present invention is applied to each
LED is using in the product of RGB tri coloured lanterns.
First, we are by taking coded address code uses 6 bit address codes on power bus as an example, while supply voltage Vdd=5V.
Then the format of every group of coding is as follows：
A0A1A2A3A4A5D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7E
Wherein：A0A1A2A3A4A indicates 6 bit address codes, addressable ranging from 26=64 groups LED；
D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D includes three groups of 8 data encodings, table
Show the data of three street lamp R, G, B in corresponding RGB tri coloured lanterns, realizes 28=256 grades of light modulations；
E is expressed as end code, judges that this group of data transmission finishes by the corresponding pulse signal of end code.
Above-mentioned every group of coding represents a frame data, and 6+3*8+1=31 numeric data code is shared per frame data.Each numeric data code is
" 0 " or " 1 ".Corresponding 0 yard of high level is 12.5us, and 0 yard of low level is 7.5us~12us；1 yard of high level is 12.5us, 1 yard
Low level is 14us~24us.
High level is vdd, and low level is set as vdd-1.8, i.e. Delta=1.8V, by rationally designing Detla numerical value
Size, so that it may adjust the working range of power supply vdd.
By calculating, it is known that 31 numeric data code holding times of above-mentioned each frame are about 0.9~1.3ms, as long as rationally
Design internal circuit, so that it may will not cause shadow to internal circuit to obtain ripple shakes of the power bus vdd within the 1.3ms times
It rings.
In conjunction with shown in Fig. 1, this is according to above-mentioned coding mode, and the power bus that one group of coding is all 0 bears narrow pulse signal
Figure.According to Fig. 1, this group of coded representation is：
000000 00000000 00000000 00000000 0
Address code 000000 addresses corresponding address and is encoded to 000000 LED in the coding, while corresponding to RGB in the LED
Light modulation numerical value correspond to R:00000000, G:00000000, B:00000000, according to design, this group of numeric data code is represented by
The color that LED is shown is pure red (certainly, according to initial setting, can carry out arbitrary setting as needed).Due to this hair
In bright, 8 data encodings are used for every group in numeric data code, in this way can 256 grades of light modulations, full-color light variation can be achieved completely.
The wavelength of the last one pulse is obviously wider in wherein Fig. 1, be exactly in the present embodiment using significant difference its
The pulse of his wavelength is as end code, to judge that this group of coding transmission finishes.
In conjunction with shown in Fig. 2, this is the negative narrow pulse signal figure of power bus that one group of coding is all 0.This group of coded representation be：
111111 11111111 11111111 11111111 1
As described above, address code 111111 addresses the LED that corresponding address is encoded to 111111, while the LED in the coding
The light modulation numerical value of interior corresponding RGB corresponds to R:11111111, G:11111111, B:11111111, according to design, this group of numeric data code
It is pure blue to be represented by the color that LED is shown.
In above-described embodiment, the negative saltus step pulse format that 31 codes are vdd-Delta to vdd on power bus, in order to incite somebody to action
This data extracts, and needs further to vdd processing.As shown in Figure 3, the mode that the present invention uses for：First will it need first
Vdd is divided, and is then compared with a stable benchmark Vref (1.2V), and the data-signal of 0 to vdd overturning is generated.In conjunction with
Shown in figure, it can be seen that
It can be seen that by the data on two-way comparator processing power bus, the full voltage work of covering vdd that can be larger
Make range；If only with the processing of single comparator, the voltage range that can be worked is limited.Using dual comparator, two paths of data letter is generated
Number DIN1 and DIN2, supply digital module processing, dexterously solves the problems, such as that voltage range is limited.
In above-mentioned coding mode, more addresses can also be used using 6 bit address codes in address code as needed
Code, for example, when for coded address code using 8 bit address codes, the format of every group of coding is as follows on power bus：
A0A1A2A3A4A5A6A7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7E
Wherein：A0A1A2A3A4A A6A7 indicate 8 bit address codes, addressable ranging from 28=256 groups LED；
More LED can be controlled using 8 bit address codes.
In addition, being to the pulse signal extracting mode generated on power supply：
Supply voltage Vdd is divided first, then by the voltage and a stable reference voltage after the partial pressure
Vref is compared, and generates the data-signal of 0 to vdd overturning.
Certainly, the above is only a specific embodiment of the present invention, be not to limit the scope of the present invention, it is all according to
The equivalent change or modification that structure, feature and principle described in scope of the present invention patent is done should all be included in Shen of the present invention
It please be in the scope of the claims.
Claims (5)
1. a kind of control method of full-color LED lamp band, it is characterised in that：One group or multigroup negative burst pulse letter are generated on power supply
Number, which forms one group of coding, which includes the address code and numeric data code of all parallel connection LEDs, utilize power supply
The pulse address code that is sent out in bus and numeric data code control shining for each LED in light bar；On i.e. all access power bus
The corresponding address code of LED Auto-matchings and numeric data code, corresponding variation is realized according to the difference of coding.
2. a kind of control method of full-color LED lamp band according to claim 1, it is characterised in that：Each LED is adopted
With RGB tri coloured lanterns.
3. a kind of control method of full-color LED lamp band according to claim 1, it is characterised in that：When being compiled on power bus
Code address code uses 6 bit address codes, the format of every group of coding as follows：
A0A1A2A3A4A5D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5 D6D7E are wherein：
A0A1A2A3A4A indicates 6 bit address codes, addressable ranging from 26=64 groups LED；
D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D includes three groups of 8 data encodings, expression pair
The data of three street lamp R, G, B in RGB tri coloured lanterns are answered, realize 28=256 grades of light modulations；
E is expressed as end code.
4. a kind of control method of full-color LED lamp band according to claim 1, it is characterised in that：When being compiled on power bus
Code address code uses 8 bit address codes, the format of every group of coding as follows：
A0A1A2A3A4A5A6A7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7E
Wherein：A0A1A2A3A4A A6A7 indicate 8 bit address codes, addressable ranging from 28=256 groups LED；
D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D includes three groups of 8 data encodings, expression pair
The data of three street lamp R, G, B in RGB tri coloured lanterns are answered, realize 28=256 grades of light modulations；
E is expressed as end code.
5. a kind of control method of full-color LED lamp band according to any one of claim 1-4, it is characterised in that：It is right
The pulse signal extracting mode generated on power supply is：
Supply voltage Vdd is divided first, then by after the partial pressure voltage and a stable reference voltage V ref into
Row compares, and generates the data-signal of 0 to vdd overturning.
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| CN201810621705.3A CN108770123A (en) | 2018-06-15 | 2018-06-15 | A kind of control method of full-color LED lamp band |
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| CN201810621705.3A CN108770123A (en) | 2018-06-15 | 2018-06-15 | A kind of control method of full-color LED lamp band |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368455A (en) * | 2018-12-19 | 2019-02-22 | 上海昶屹机电科技有限公司 | Elevator visible light indoor locating system and method |
| CN112188678A (en) * | 2020-09-02 | 2021-01-05 | 宗仁科技(平潭)有限公司 | LED driving chip, LED driving method and system |
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| CN109368455A (en) * | 2018-12-19 | 2019-02-22 | 上海昶屹机电科技有限公司 | Elevator visible light indoor locating system and method |
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Effective date of registration: 20190510 Address after: 523000 4th Floor, 93 Daling Village Column Road, Dalingshan Town, Dongguan City, Guangdong Province Applicant after: Dongguan Huacaiwei Technology Co., Ltd. Address before: 523000 5 Tower Road, Daling village, Daling mountain town, Dongguan, Guangdong, 95 Applicant before: Dongguan Hua Wei Electronic Co., Ltd. |
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Application publication date: 20181106 |