CN102510598A - Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method - Google Patents
Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method Download PDFInfo
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- CN102510598A CN102510598A CN2011102572196A CN201110257219A CN102510598A CN 102510598 A CN102510598 A CN 102510598A CN 2011102572196 A CN2011102572196 A CN 2011102572196A CN 201110257219 A CN201110257219 A CN 201110257219A CN 102510598 A CN102510598 A CN 102510598A
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Abstract
The invention relates to the technical field of electronics, in particular to a control system and a method. The current-adjustable multi-channel LED (Light-emitting Diode) drive control system comprises a drive module, at least two paths of LED luminous units and a power supply module; the at least two paths of LED luminous units are respectively connected with the drive module; and one path of LED luminous unit is connected with the drive module through a switch module. The control system also comprises a current adjusting module and an LED control module, wherein the signal output end of the current adjusting module is connected with the signal input end of the drive module; and the signal output end of the LED control module is connected with the signal input end of the current adjusting module and the signal input end of the switch module respectively. As the technical scheme is adopted, the current-adjustable multi-channel LED drive control system and the control method have the advantages that the cost is reduced, the circuit is simplified, the dimensions are reduced, and the system reliability is enhanced.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of control system and method.
Background technology
At present, the drive controlling method of LED multi-path mainly adopts every paths of LEDs to use different drive circuits that drive current is provided respectively, and especially when every paths of LEDs needed the different driving electric current, LED needed one road constant-current source that electric current is provided.This method has following shortcoming: (1) cost is high; (2) drive circuit and control circuit more complicated all, reliability is lower; (3) size is big, is unfavorable for some portable use etc.
Summary of the invention
The objective of the invention is to, a kind of LED multi-path driving control system of adjustable current is provided, solve above technical problem.
Another object of the present invention is to, a kind of LED multi-path drive controlling method of adjustable current is provided, solve above technical problem.
The technical problem that the present invention solved can adopt following technical scheme to realize:
A kind of LED multi-path driving control system of adjustable current; Comprise driver module, two paths of LED luminescence unit at least; Also being included as said driver module and LED luminescence unit provides the power module of electric energy; It is characterized in that the said LED luminescence unit of two-way connects said driver module respectively at least, the said LED luminescence unit in every road connects said driver module through a switch module;
Also comprise a current regulating module, the signal output part of said current regulating module connects the signal input part of said driver module;
Also comprise a LED control module, the signal output part of said LED control module connects the signal input part of said current regulating module, the signal input part of said switch module respectively.
The present invention adds the multichannel control switching circuit on the basis of the existing circuit that contains the LED chip for driving, obtain Drive and Control Circuit a kind of scalable drive current, that be suitable for driving LED multi-path.LED control module of the present invention is used for to the current regulating module output signal of telecommunication; The signal of telecommunication of current regulating module output can be voltage, electric current, PWM or the other types signal of telecommunication, and driver module is according to the output signal of telecommunication output driving current of current regulating module.The LED control module is the conducting and the shutoff of control switch module also, makes corresponding LED luminescence unit luminous.The present invention adopts above-mentioned design, has reducing cost, simplifies circuit, remarkable advantage such as reduced in size, enhance system reliability.
Said LED luminescence unit is 2～9 the tunnel.
Said LED control module can be controlled at least two all conductings of said switch module, also can control at least two said switch module alternate conduction, can also control conducting of at least two said switch module parts or not conducting of part.Realized that the LED control module can control the multiple conduction mode of LED multi-path luminescence unit.
Said LED control module can be through the said current regulating module of control; And then control and driving module; Make the LED luminescence unit operating current on each road identical or different, the signal of telecommunication of current regulating module output can be voltage, electric current, PWM or other signals of telecommunication.
The operating current of said LED luminescence unit is 0.1A～40A.
One tunnel said LED luminescence unit is a LED.Also can be the LED of at least two parallel connections.The LED model of at least two parallel connections is identical.Also can be the LED of at least two series connection.Can also be the LED of at least three serial or parallel connection combinations.
A kind of LED multi-path drive controlling method of adjustable current is characterized in that, comprises the steps:
1) power module provides DC power supply to LED control module, current regulating module, driver module, at least two switch modules;
2) the LED control module selects at least two switch modules of control all to break off;
3) the LED control module is provided with the output signal of current regulating module;
4) the LED control module is selected at least one switch module conducting of control, and remaining switch module breaks off;
5) driver module is according to the output signal output driving current of current regulating module;
6) the LED luminescence unit that is connected with the switch module of conducting is luminous;
7) repeat above step and realize the luminous in turn of LED multi-path luminescence unit.
Said LED luminescence unit is 2～9 the tunnel; Said step 3) and 4) order can be changed.The said LED luminescence unit in every road connects said driver module through a switch module.
In the step 4), said LED control module can be controlled at least two all conductings of said switch module, also can control at least two said switch module alternate conduction, can also control conducting of at least two said switch module parts or not conducting of part.
The said LED control module of step 5) can be through the said current regulating module of control; And then control and driving module; Make the LED luminescence unit operating current on each road identical or different, the signal of telecommunication of current regulating module output can be voltage, electric current, PWM or other signals of telecommunication.
The operating current of said LED luminescence unit is 0.1A～40A.
One tunnel said LED luminescence unit is a LED.Also can be the LED of at least two parallel connections.The LED model of at least two parallel connections is identical.
Beneficial effect: owing to adopt technique scheme, the present invention has following advantage: the LED multi-path switching controls; The switching of LED multi-path luminescence unit is the highest can to reach 1kHz; The LED multi-path luminescence unit is worked under three kinds of patterns such as mode of operation, alternation pattern and part is worked simultaneously, part alternation at the same time; The operating current of LED multi-path luminescence unit can be provided with different current values respectively; The operating current of LED multi-path luminescence unit can reach 0.1ADC～40ADC.
Description of drawings
Fig. 1 is a circuit diagram of the present invention;
Fig. 2 is a schematic flow sheet of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1; A kind of LED multi-path driving control system of adjustable current; Comprise driver module 11, two paths of LED luminescence unit 121～LED luminescence unit 12n at least, also be included as the power module 16 that driver module 11 and LED luminescence unit 121～LED luminescence unit 12n provide electric energy, LED luminescence unit 121～LED luminescence unit 12n connects driver module 11 respectively; Also comprise switch module 131～switch module 13n, every paths of LEDs luminescence unit connects driver module 11 through a switch module.Also comprise a current regulating module 14, the signal output part of current regulating module 14 connects the signal input part of driver module 11.Also comprise a LED control module 15, the signal output part of LED control module 15 connects the signal input part of current regulating module 14, the signal input part of switch module 131～switch module 13n respectively.
The present invention adds the multichannel control switching circuit on the basis of the existing circuit that contains the LED chip for driving, obtain Drive and Control Circuit a kind of scalable drive current, that be suitable for driving LED multi-path.LED control module 15 of the present invention is used for to the output voltage signal of current regulating module 14 output voltages with Control current adjustment module 14; Driver module 11 is according to the output signal of telecommunication of current regulating module 14; The signal of telecommunication of current regulating module output can be voltage, electric current, PWM or the other types signal of telecommunication, output driving current.LED control module 15 is gone back the conducting and the shutoff of control switch module, makes corresponding LED luminescence unit luminous.
The LED luminescence unit is 2～9 the tunnel.Promptly the present invention includes LED luminescence unit 121～LED luminescence unit 129.The operating current of LED luminescence unit 121～LED luminescence unit 12n is 0.1A～40A.Each LED luminescence unit is a LED.Also can be the LED of at least two parallel connections.The LED model of at least two parallel connections is identical.Also can be the LED of at least two series connection.Can also be the LED of at least three serial or parallel connection combinations.
LED control module 15 can all conductings of control switch module 131～switch module 13n, also can control switch module 131～switch module 13n alternate conduction, and can also 13n part conducting of control switch module 131～switch module or not conducting of part.LED control module 15 can be passed through Control current adjustment module 14; And then control and driving module 11; Make the LED luminescence unit operating current on each road identical or different, the signal of telecommunication of current regulating module 14 outputs can be voltage, electric current, PWM or other signals of telecommunication.
A kind of LED multi-path drive controlling method of adjustable current comprises the steps:
1) power module 16 provides DC power supply to LED control module 15, current regulating module 14, driver module 11, switch module 131～switch module 13n.
2) LED control module 15 selects control switch module 131～switch module 13n all to break off.
3) LED control module 15 is provided with the output signal of current regulating module 14.
4) LED control module 15 is selected at least one switch module conducting of control, and remaining switch module breaks off.
5) driver module 11 is according to the output signal output driving current of current regulating module 14.
6) the LED luminescence unit that is connected with the switch module of conducting is luminous.
7) repeat above step and realize the luminous in turn of n paths of LEDs luminescence unit.
N value among the present invention is 2～9 positive integer; Step 3) and 4) order can be changed.Each LED luminescence unit all passes through a switch module and connects driver module 11.Be that the LED luminescence unit is 2～9 the tunnel.Switch module also has 2～9.N paths of LEDs luminescence unit is parallel with one another, and the operating current of LED luminescence unit is 0.1A～40A.The LED luminescence unit is a LED.Also can be the LED of at least two parallel connections.The LED model of at least two parallel connections is identical.Also can be the LED of at least two series connection.Can also be the LED of at least three serial or parallel connection combinations.
In the 4th step, LED control module 15 can control switch module 131～switch module 13n in a switch module conducting, remaining switch module breaks off.LED control module 15 is all conductings of controllable switch module 131～switch module 13n also.Also can control switch module 131～switch module 13n alternate conduction, can also control switch module 131～switch module 13n in part conducting or not conducting of part.
In the 5th step; LED control module 15 can be passed through Control current adjustment module 14; And then control and driving module 11, make the LED luminescence unit operating current on each road identical or different, the signal of telecommunication of current regulating module 14 outputs can be voltage, electric current, PWM or other signals of telecommunication.
Embodiment one, with reference to Fig. 1, Fig. 2:
The first step connects according to circuit diagram as shown in Figure 1, and power module 16 provides DC power supply to LED control module 15, current regulating module 14, driver module 11, switch module 131～switch module 13n.
In second step, LED control module 15 selects control switch module 131～switch module 13n all to break off.
In the 3rd step, LED control module 15 is provided with the output signal of current regulating module 14.
In the 4th step, LED control module 15 is selected 131 conductings of control switch module, and remaining switch module breaks off.
In the 5th step, driver module 11 is according to the output signal output driving current of current regulating module 14.
In the 6th step, LED luminescence unit 121 is luminous.
The 3rd step and the 4th step order can be changed.Repeat second and went on foot for the 6th step, make LED control module 15 in the 4th step, actuating switch module 131～switch module 13n one by one, then LED luminescence unit 121～LED luminescence unit 12n is luminous in turn.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.
Claims (10)
1. the LED multi-path driving control system of an adjustable current; Comprise driver module, two paths of LED luminescence unit at least; Also being included as said driver module and LED luminescence unit provides the power module of electric energy; It is characterized in that at least two said LED luminescence units connect said driver module respectively, the said LED luminescence unit in every road connects said driver module through a switch module;
Also comprise a current regulating module, the signal output part of said current regulating module connects the signal input part of said driver module;
Also comprise a LED control module, the signal output part of said LED control module connects the signal input part of said current regulating module, the signal input part of said switch module respectively.
2. the LED multi-path driving control system of a kind of adjustable current according to claim 1, it is characterized in that: said LED luminescence unit is 2～9 the tunnel.
3. the LED multi-path driving control system of a kind of adjustable current according to claim 1, it is characterized in that: the operating current of said LED luminescence unit is 0.1A～40A.
4. according to the LED multi-path driving control system of claim 1,2 or 3 described a kind of adjustable currents, it is characterized in that: a said LED luminescence unit is the LED of at least two parallel connections.
5. the LED multi-path drive controlling method of an adjustable current is characterized in that, comprises the steps:
1) power module provides DC power supply to LED control module, current regulating module, driver module, at least two switch modules;
2) the LED control module selects at least two switch modules of control all to break off;
3) the LED control module is selected at least one switch module conducting of control, and remaining switch module breaks off;
4) the LED control module is provided with the output signal of current regulating module;
5) driver module is according to the output signal output driving current of current regulating module;
6) the LED luminescence unit that is connected with the switch module of conducting is luminous;
7) repeat above step and realize the luminous in turn of LED multi-path luminescence unit.
6. the LED multi-path drive controlling method of a kind of adjustable current according to claim 5, it is characterized in that: said LED luminescence unit is 2～9 the tunnel, the said LED luminescence unit in every road connects said driver module through a switch module.
7. the LED multi-path drive controlling method of a kind of adjustable current according to claim 5 is characterized in that: in the step 4), and at least two all conductings of said switch module of said LED control module control.
8. the LED multi-path drive controlling method of a kind of adjustable current according to claim 5; It is characterized in that: the said LED control module of step 5) is through the said current regulating module of control; And then control and driving module; Make the LED luminescence unit operating current on every road identical or different, the output signal of current regulating module is a kind of in voltage, electric current or the PWM signal of telecommunication.
9. the LED multi-path drive controlling method of a kind of adjustable current according to claim 8, it is characterized in that: the operating current of said LED luminescence unit is 0.1A～40A.
10. the LED multi-path drive controlling method of a kind of adjustable current according to claim 9 is characterized in that: said LED luminescence unit is the LED of at least two parallel connections.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102572196A CN102510598A (en) | 2011-09-01 | 2011-09-01 | Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method |
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| CN2011102572196A CN102510598A (en) | 2011-09-01 | 2011-09-01 | Current-adjustable multi-channel LED (Light-emitting Diode) drive control system and control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889089A (en) * | 2012-12-19 | 2014-06-25 | 深圳市海洋王照明工程有限公司 | Driving circuit and lamp |
| CN104159374A (en) * | 2014-08-18 | 2014-11-19 | 赵鹏程 | LED lamp with sound/light multiple driving control |
| CN104768290A (en) * | 2012-12-28 | 2015-07-08 | 电子科技大学 | Multi-path current source switching device |
| CN106205504A (en) * | 2016-08-12 | 2016-12-07 | 江西康铭盛光电科技有限公司 | A kind of LED backlight light adjusting system |
| CN111679621A (en) * | 2020-07-15 | 2020-09-18 | 南京科远智慧科技集团股份有限公司 | Circuit method for improving current output reliability in triple redundancy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201388310Y (en) * | 2008-12-30 | 2010-01-20 | 深圳市中联数源电子有限公司 | LED constant current drive circuit |
| CN201515523U (en) * | 2009-05-27 | 2010-06-23 | 彩虹集团公司 | Driving device of light-emitting diode LED |
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- 2011-09-01 CN CN2011102572196A patent/CN102510598A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201388310Y (en) * | 2008-12-30 | 2010-01-20 | 深圳市中联数源电子有限公司 | LED constant current drive circuit |
| CN201515523U (en) * | 2009-05-27 | 2010-06-23 | 彩虹集团公司 | Driving device of light-emitting diode LED |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889089A (en) * | 2012-12-19 | 2014-06-25 | 深圳市海洋王照明工程有限公司 | Driving circuit and lamp |
| CN103889089B (en) * | 2012-12-19 | 2016-05-04 | 深圳市海洋王照明工程有限公司 | A kind of drive circuit and light fixture |
| CN104768290A (en) * | 2012-12-28 | 2015-07-08 | 电子科技大学 | Multi-path current source switching device |
| CN104768290B (en) * | 2012-12-28 | 2017-06-09 | 电子科技大学 | Multipath current-source switching device |
| CN104159374A (en) * | 2014-08-18 | 2014-11-19 | 赵鹏程 | LED lamp with sound/light multiple driving control |
| CN106205504A (en) * | 2016-08-12 | 2016-12-07 | 江西康铭盛光电科技有限公司 | A kind of LED backlight light adjusting system |
| CN111679621A (en) * | 2020-07-15 | 2020-09-18 | 南京科远智慧科技集团股份有限公司 | Circuit method for improving current output reliability in triple redundancy |
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Application publication date: 20120620 |