CN204180343U - Edge signal counting device and led driver - Google Patents
Edge signal counting device and led driver Download PDFInfo
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- CN204180343U CN204180343U CN201420584724.0U CN201420584724U CN204180343U CN 204180343 U CN204180343 U CN 204180343U CN 201420584724 U CN201420584724 U CN 201420584724U CN 204180343 U CN204180343 U CN 204180343U
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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]
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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Abstract
The utility model discloses a kind of edge signal counting device and LED driver, this edge signal counting device, comprises edge counting unit, and the edge for the edge signal inputted power line counts, and exports count results; Charhing unit, for edge counting unit and initialization unit are powered, charges when power line signal is high level, discharges when power line signal is low level; Initialization unit, for carrying out initialization according to described power supply electrical level to edge counting unit.LED driver comprises edge signal counting device and the driver element for the count results driving LED according to edge signal counting device.The utility model utilizes edge signal counting device, the edge signal of power line input is carried out counting realization seven color luminescences are completed to the control of driver element and then driving LED, only need a power and ground, do not need additional signal lines, be conducive to circuit realiration LED driver chip.
Description
Technical field
The utility model relates to circuit engineering field, is specifically related to a kind of edge signal counting device and LED driver.
Background technology
Light-emitting diode (Light Emitting Diode, LED) is widely used in architectural lighting, vehicle head taillight, Landscape Lamp, Holiday lamp etc.The remarkable advantages such as LED has that efficiency is high, directivity is good, color stability is good, reliability is high, the life-span is long, the little and environmental safety of volume, are especially applicable to being applied to Landscape Lighting, Holiday lamp illumination.Red, green, blue three-color LED can realize the control of seven colours or more colors by control device, and allow LED lamp present excellent colourful beautiful scene, wherein control device is LED illumination System key component,
In recent years, along with the application of integrated circuit technique and computer technology, LED control method based on DMX512 agreement, DALI agreement, NRZ agreement etc. is applied more widely in field of LED decorative illumination acquisition, achieve the digitlization of LED control system, improve the flexibility ratio of LED control system.
DMX512 agreement is formulated in 1985 by arenas association of the U.S. the earliest, and the design of physical layer adopts RS-485 transceiver, and bus realizes Control Console with a pair twisted-pair feeder and is connected with dimmer.RS-485 adopts balance to send and differential received, and receiving sensitivity is high, and jamproof ability is strong, and signal transmission distance can reach km.DMX512 agreement adopts digital technology to the brightness regulation realizing lighting network control, and agreement has all done strict regulation to the data format of signal light control station information and physical layer, provides a standard interface to signal light control.Because DMX512 agreement has applicability widely, adopted by global manufacturer and user very soon, nearly all light control console and controlled plant are all compatible DMX512 consensus standard.
DALI is a kind of light control bus scheme that Europe puts forward, and is the open asynchronous serial digital communication protocol controlled for illuminator.DALI system adopts primary and secondary structure, and system can connect at most 64 from module, eachly uses unique individual marking address from module, and this address sets when system initialization, can revise the address from module in use procedure according to demand.
Also have at present and adopt NRZ agreement, transmission of control signals on single holding wire, realizes the control of multiple color by the duty ratio arranging red, green, blue LED.
The existing control device based on above agreement can obtain multiple color effect by controlling red, green, blue three-color LED duty ratio, but all need the holding wire transfer control signal by more than, not by power line control LED, the product occasion only having power line, ground wire can not be applied to.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of edge signal counting device and LED driver.
A kind of edge signal counting device, comprising:
Edge counting unit, the edge for the edge signal inputted power line counts, and exports count results;
Charhing unit, provides power supply electrical level for the edge signal inputted according to power line for edge counting unit and initialization unit, charges, discharge when edge signal is low level when edge signal is high level;
Initialization unit, for carrying out initialization according to described power supply electrical level to edge counting unit.
In edge signal counting device of the present utility model, each functional unit can be integrated into counting chip.
In the utility model, by initialization, Arbitrary Digit can be put to edge counting unit, set as required, be generally and put " zero " (namely resetting).
When power line signal is high level, charhing unit charges, and when the level that charhing unit provides reaches high level, edge counting unit and initialization unit power on successfully.
For ensureing that edge signal counting device normally works, the low level lasting duration of edge signal, the power supply electrical level that must be less than charhing unit is reduced to the duration needed for low level by high level.
Described edge counting unit comprises the d type flip flop of several series connection, exports count results with the output of each d type flip flop, wherein:
The clock signal input terminal of first d type flip flop is connected with power line, and in adjacent two d type flip flops, the clock signal input terminal of a rear d type flip flop is connected with the inverse output terminal of previous d type flip flop;
The reset terminal of each d type flip flop is connected with initialization unit, and each d type flip flop inverse output terminal is connected with trigger end.
Do not make specified otherwise in the present invention, first d type flip flop refers to the d type flip flop corresponding according to lowest order in counting unit.Using the d type flip flop of relative low level as previous in adjacent two d type flip flops, relatively high-order d type flip flop is as latter one.
D type flip flop can count for rising edge, also can count for trailing edge, can select according to demand.
The number of d type flip flop is more, and count range corresponding to edge counting unit is larger.As preferably, described edge counting unit comprises the d type flip flops of at least two series connection.Further preferably, described edge counting unit comprises the d type flip flop of 3 ~ 200 series connection.
Described charhing unit comprises diode, and the anode of described diode is connected with power line, and negative electrode passes through an energy-storage travelling wave tube ground connection,
Described charhing unit by the negative electrode of diode for edge counting unit and initialization unit provide power supply electrical level.
Energy-storage travelling wave tube is interpreted as the electronic component that can carry out discharge and recharge.As preferably, described energy-storage travelling wave tube is charged electrical perhaps metal-oxide-semiconductor.Due to charging capacitor and traditional CMOS technology incompatible, therefore can use with CMOS technology that compatible good metal-oxide-semiconductor is as equivalent capacity as energy-storage travelling wave tube, be convenient to integrated, when using metal-oxide-semiconductor, the source electrode of this metal-oxide-semiconductor and drain electrode short circuit, form equivalent capacity.
Prevent charging capacitor back discharge by diode, cause edge signal unstable, make count results occur mistake.
The utility model additionally provides a kind of LED driver, comprises above-mentioned edge signal counting device, and for the driver element of the count results driving LED according to edge signal counting device.
Driver element can need to adopt existing LED drive circuit to realize according to driving.
Compared with prior art, edge signal counting device is utilized in the utility model, undertaken counting realization by the edge signal inputted power line and seven color luminescences are completed to the control of driver element and then driving LED, only need a power and ground, do not need extra holding wire, be conducive to the integrated chip realizing LED driver.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the LED driver of the present embodiment;
Fig. 2 is the circuit theory diagrams of the edge counting unit of the present embodiment;
Fig. 3 is the circuit theory diagrams of the charhing unit of the present embodiment;
Fig. 4 is the circuit theory diagrams of the initialization unit of the present embodiment;
Fig. 5 is the sequential chart of the edge signal counting device of the present embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1 (shown in dotted line frame part), the edge signal counting device of the present embodiment, comprising:
Edge counting unit, the edge for the edge signal inputted power line counts, and exports count results;
Charhing unit, provides power supply electrical level for the edge signal inputted according to power line for edge counting unit and initialization unit, charges, discharge when edge signal is low level when edge signal is high level;
Initialization unit, for carrying out initialization according to described power supply electrical level to edge counting unit.
Fig. 2 is the edge counting unit of the present embodiment, the rising edge clock triggered D flip flop that the band low level comprising several series connection resets, and exports count results with the forward output of each d type flip flop.In the present embodiment, edge counting unit comprises 3 d type flip flops, is respectively the first d type flip flop F1, the second d type flip flop F2 and 3d flip-flop F3, and corresponding output is respectively Q1, Q2 and Q3, and corresponding count results is followed successively by Q1, Q2, Q3 from low to high.
The clock signal input terminal CK1 of the first d type flip flop is connected with power line, the inverse output terminal QB1 of the first d type flip flop is connected with the clock signal input terminal CK2 of the second d type flip flop, and the inverse output terminal QB2 of the second d type flip flop is connected with the clock signal input terminal CK3 of 3d flip-flop;
The reset terminal of each d type flip flop is connected with initialization unit (comprising reset terminal RD1, reset terminal RD2 and reset terminal RD3), and inverse output terminal is connected with trigger end (namely inverse output terminal QB1 connects trigger end D1, inverse output terminal QB2 connects trigger end D2, inverse output terminal QB3 connects trigger end D3).
The rising edge clock triggered D flip flop that the present embodiment select tape low level resets, counts the rising edge of edge signal.
Fig. 3 is the physical circuit of the charhing unit of the present embodiment, comprise diode D, the anode of diode D is connected with power line, and negative electrode is by an energy-storage travelling wave tube C ground connection (in the present embodiment, charging capacitor is the metal-oxide-semiconductor equivalent capacity of source and drain short circuit, and the size of equivalent capacity is 0.2 μ F).Whole charhing unit by the negative electrode of diode D for edge counting unit and initialization unit provide power supply electrical level.
Fig. 4 is the circuit theory diagrams of initialization unit, comprises four metal-oxide-semiconductors, is respectively p channel MOS tube T1, p channel MOS tube T2, n channel MOS tube T3 and p channel MOS tube T4, the first inverter V1, the second inverter V2.Concrete annexation is as follows:
The source electrode of metal-oxide-semiconductor T1 and drain electrode are all connected to the negative electrode of diode D1 in charhing unit, and grid is connected with the drain electrode of metal-oxide-semiconductor T3, and the grid of metal-oxide-semiconductor T3 is connected with the source electrode of metal-oxide-semiconductor T1, metal-oxide-semiconductor T3 source ground.The grid of metal-oxide-semiconductor T2 and source electrode are connected with the grid of metal-oxide-semiconductor T1 and source electrode respectively, after drain series one current-limiting resistance R (in the present embodiment, the size of current-limiting resistance is 500 Ω), be connected with the grid of metal-oxide-semiconductor T4, and the drain electrode of metal-oxide-semiconductor T4 and source electrode are connected with ground with the source electrode of metal-oxide-semiconductor T3 respectively.
The grid of metal-oxide-semiconductor T4 connects the first inverter V1 input, and the output of the first inverter V1 connects the second inverter V2 input, and the output of the second inverter V2 is that the output of initialization unit is to edge counting unit output reset signal.
The operation principle of the edge signal counting device of the present embodiment is as follows:
When this counting device does not power on, the power supply electrical level that charhing unit provides is low level, now initialization unit and edge counting unit electricity shortage, and whole counting device can not count.
When counting device powers on, and when edge signal is high level, the energy-storage travelling wave tube C in charhing unit is charged.In the sufficiently long situation of high level lasting time, it is high level that power supply electrical level is overturn by low level, and initialization unit and edge counting unit are by normal power supply.
Now, the metal-oxide-semiconductor T3 conducting in initialization unit, makes metal-oxide-semiconductor T2 conducting, and therefore, charhing unit can be charged to the metal-oxide-semiconductor T4 being used as electric capacity by current-limiting resistance R.To in metal-oxide-semiconductor T4 charging process, the voltage of metal-oxide-semiconductor T4 grid increases gradually, completes initialization when charging arrives after the reset signal making the second inverter V2 export turn to high level by low level.
The output of the second inverter V2 is connected with the reset terminal of each d type flip flop in edge counting unit, and when the second inverter V2 output low level, each d type flip flop resets, and namely edge counting unit resets.
In the present embodiment power line input edge signal, and now initialization unit and count results time diagram as shown in Figure 5, wherein count results adopts the output signal of the forward output of three d type flip flops to represent.After power supply electrifying, be reset to logical zero at T time three d type flip flops, namely count results resets.At the rising edge E1 place of edge signal, count results is 001; Rise on the power line along E2, count results is 010; Rise on the power line along E3, count results is 011; Rise on the power line along E4, count results is 100; Rise on the power line along E5, count results is 101; Rise on the power line along E6, count results is 110; Rise on the power line along E7, count results is 111; Rise on the power line along E8, counting device overflows, and count results is 000.
For ensureing in counting process, initialization unit and edge counting unit can normal power supplies, and in edge signal, low level lasting duration must be less than energy-storage travelling wave tube C in charhing unit and is discharged to low level electric discharge duration by high level.
In addition, due to the one-way conduction effect of diode, during electric discharge, charging capacitor can not carry out back discharge to power line.
Do not make specified otherwise in the present embodiment, the voltage magnitude that high level is corresponding is 3.0 ~ 5V, and low level is less than 1.0V.
The driver element that edge signal counting device can be used for control LED realizes colored control, as being applied to redgreenblue LED color light control, just only can sending edge control signal by power line, realizing the control of seven colours.During driving, the LED driver adopted as shown in Figure 1, comprises above-mentioned edge signal counting device, and for the driver element of the count results driving LED according to edge signal counting device.Driver element can adopt existing LED drive circuit to realize, and ensures that the input interface of LED drive unit adopted mates with the input interface of counting device.
The LED driver of the present embodiment only utilizes a power line input edge signal, by counting edge signal, making control drive unit drives complete seven colorful light-emittings of LED, not needing to use the holding wire transfer control signal more than.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model, as: between power line and edge counting unit input, increase filter circuit, delay circuit or negate circuit; Delay circuit or negate circuit is increased between the clock signal input terminal of a d type flip flop and the inverse output terminal of previous d type flip flop after adjacent two d type flip flops; Delay circuit is increased between the inverse output terminal of each d type flip flop and trigger end.
Claims (7)
1. an edge signal counting device, is characterized in that, comprising:
Edge counting unit, the edge for the edge signal inputted power line counts, and exports count results;
Charhing unit, provides power supply electrical level for the edge signal inputted according to power line for edge counting unit, charges, discharge when edge signal is low level when edge signal is high level;
Initialization unit, for carrying out initialization according to described power supply electrical level to edge counting unit.
2. edge signal counting device as claimed in claim 1, is characterized in that, described edge counting unit comprises the d type flip flop of several series connection, exports count results with the output of each d type flip flop, wherein:
The clock signal input terminal of first d type flip flop is connected with power line, and in adjacent two d type flip flops, the clock signal input terminal of a rear d type flip flop is connected with the inverse output terminal of previous d type flip flop;
The reset terminal of each d type flip flop is connected with initialization unit, and inverse output terminal is connected with trigger end.
3. edge signal counting device as claimed in claim 2, is characterized in that, described edge counting unit comprises the d type flip flop of at least two series connection.
4. edge signal counting device as claimed in claim 3, is characterized in that, described edge counting unit comprises the d type flip flop of 3 ~ 200 series connection.
5. edge signal counting device as claimed in claim 1, it is characterized in that, described charhing unit comprises diode, and the anode of described diode is connected with power line, and negative electrode passes through an energy-storage travelling wave tube ground connection,
Described charhing unit by the negative electrode of diode for edge counting unit and initialization unit provide power supply electrical level.
6. edge signal counting device as claimed in claim 5, it is characterized in that, described energy-storage travelling wave tube is charged electrical perhaps metal-oxide-semiconductor.
7. a LED driver, is characterized in that, comprises as the edge signal counting device in claim 1 ~ 6 as described in any one claim, and for the driver element of the count results driving LED according to edge signal counting device.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584724.0U CN204180343U (en) | 2014-10-10 | 2014-10-10 | Edge signal counting device and led driver |
| PCT/CN2014/089967 WO2016054848A1 (en) | 2014-10-10 | 2014-10-31 | Edge signal counting device and led driver |
| CN201480031528.3A CN105493628B (en) | 2014-10-10 | 2014-10-31 | Edge signal counting device and led driver |
| ES15849131T ES2834633T3 (en) | 2014-10-10 | 2015-09-22 | Counting device and LED drive unit activated by power cable edge signal |
| JP2017518252A JP6268330B2 (en) | 2014-10-10 | 2015-09-22 | Power cord edge signal trigger computing device and LED driver |
| EP15849131.6A EP3206463B1 (en) | 2014-10-10 | 2015-09-22 | Computing device and led driver triggered by power cord edge signal |
| PCT/CN2015/090213 WO2016054970A1 (en) | 2014-10-10 | 2015-09-22 | Computing device and led driver triggered by power cord edge signal |
| TW104132989A TWI571068B (en) | 2014-10-10 | 2015-10-07 | An operating device triggered by edge signal through power line and an led driver |
| US15/438,398 US9723679B2 (en) | 2014-10-10 | 2017-02-21 | Computing apparatus and LED driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584724.0U CN204180343U (en) | 2014-10-10 | 2014-10-10 | Edge signal counting device and led driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204180343U true CN204180343U (en) | 2015-02-25 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420584724.0U Withdrawn - After Issue CN204180343U (en) | 2014-10-10 | 2014-10-10 | Edge signal counting device and led driver |
| CN201480031528.3A Active CN105493628B (en) | 2014-10-10 | 2014-10-31 | Edge signal counting device and led driver |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480031528.3A Active CN105493628B (en) | 2014-10-10 | 2014-10-31 | Edge signal counting device and led driver |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN204180343U (en) |
| WO (1) | WO2016054848A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105493628A (en) * | 2014-10-10 | 2016-04-13 | 罗小华 | Edge signal counting device and led driver |
| WO2016054970A1 (en) * | 2014-10-10 | 2016-04-14 | 罗小华 | Computing device and led driver triggered by power cord edge signal |
| WO2016095648A1 (en) * | 2014-12-15 | 2016-06-23 | 罗小华 | Coloured lamp apparatus based on edge signal control over power line |
| US11737185B2 (en) | 2020-08-19 | 2023-08-22 | Jiangsu Caihuixin Electronic Technology Co., Ltd. | LED control system using modulated signal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087839B (en) * | 2020-08-28 | 2022-09-06 | 杭州昀芯光电科技有限公司 | Power line edge signal triggered arithmetic device with level time length counting function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2330870A1 (en) * | 2009-08-28 | 2011-06-08 | Freescale Semiconductor, Inc. | Sampling trigger device and method thereof |
| JP5708371B2 (en) * | 2010-10-28 | 2015-04-30 | ミツミ電機株式会社 | LIGHTING POWER SUPPLY DEVICE AND HOLDING CURRENT CONTROL METHOD |
| CN103095855B (en) * | 2011-10-27 | 2015-05-27 | 无锡力芯微电子股份有限公司 | I2C communication interface unit |
| CN104053283B (en) * | 2014-06-20 | 2016-06-01 | 陕西亚成微电子股份有限公司 | A kind of LED adjusting control circuit |
| CN204180343U (en) * | 2014-10-10 | 2015-02-25 | 罗小华 | Edge signal counting device and led driver |
-
2014
- 2014-10-10 CN CN201420584724.0U patent/CN204180343U/en not_active Withdrawn - After Issue
- 2014-10-31 CN CN201480031528.3A patent/CN105493628B/en active Active
- 2014-10-31 WO PCT/CN2014/089967 patent/WO2016054848A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105493628A (en) * | 2014-10-10 | 2016-04-13 | 罗小华 | Edge signal counting device and led driver |
| WO2016054970A1 (en) * | 2014-10-10 | 2016-04-14 | 罗小华 | Computing device and led driver triggered by power cord edge signal |
| CN105493628B (en) * | 2014-10-10 | 2017-05-10 | 罗小华 | Edge signal counting device and led driver |
| WO2016095648A1 (en) * | 2014-12-15 | 2016-06-23 | 罗小华 | Coloured lamp apparatus based on edge signal control over power line |
| US11737185B2 (en) | 2020-08-19 | 2023-08-22 | Jiangsu Caihuixin Electronic Technology Co., Ltd. | LED control system using modulated signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105493628B (en) | 2017-05-10 |
| WO2016054848A1 (en) | 2016-04-14 |
| CN105493628A (en) | 2016-04-13 |
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