CN109803467A - LED multi-path driving device and method - Google Patents
LED multi-path driving device and method Download PDFInfo
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- CN109803467A CN109803467A CN201910130816.9A CN201910130816A CN109803467A CN 109803467 A CN109803467 A CN 109803467A CN 201910130816 A CN201910130816 A CN 201910130816A CN 109803467 A CN109803467 A CN 109803467A
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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
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- 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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Abstract
The present embodiment provides a kind of LED multi-path driving device and methods.Device includes: the first drive module, the second drive module, switch module and control module；First drive module is used to drive the first LED in LED multi-path；It is connected between second drive module and first drive module by switch module, the second drive module is used to drive the 2nd LED in LED multi-path, and provides operating voltage for first drive module；Control module is connect with the switch module, for controlling switch module disconnection access when the first LED is closed the first drive module is stopped working.The present embodiment provides LED multi-path driving device and method, the primary circuit of the supply access and the first LED that cut off the first drive module by switch module is driven, and is reduced stand-by power consumption, is met environmentally protective requirement.
Description
Technical field
The present embodiment is related to LED technology field more particularly to a kind of LED multi-path driving device and method.
Background technique
Light emitting diode (Light Emitting Diode, abbreviation LED) is existed with its high efficiency, high integration and high life
Emerging energy-conserving light source field is widely applied.
As environmentally protective idea is increasingly rooted in the hearts of the people, for the whole light effect and stand-by power consumption of intelligent LED lighting product
Requirement it is higher and higher.In the prior art, the mode for generalling use raising LED drive current improves the illuminating effect (light of LED
Effect), the stand-by power consumption of LED increases with it (when LED load is extinguished) when leading to standby, is unsatisfactory for environmentally protective requirement.
Summary of the invention
The present embodiment provides a kind of LED multi-path driving device and methods, to reduce stand-by power consumption.
In a first aspect, the present embodiment provides a kind of LED multi-path driving devices, comprising: the first drive module, the second driving mould
Block, switch module and control module；
Wherein, first drive module is used to drive the first LED in the LED multi-path；
It is connected between second drive module and first drive module by the switch module, described second drives
Dynamic model block is used to drive the 2nd LED in the LED multi-path, and provides operating voltage for first drive module；
The control module is connect with the switch module, for controlling the switching molding when the first LED is closed
Block disconnects access and first drive module is stopped working.
In a kind of possible design, second drive module includes constant voltage source unit；
The constant voltage source unit is used to provide operating voltage for first drive module；And/or
The constant voltage source unit is used to provide operating voltage for the control module.
In a kind of possible design, second drive module further includes driving unit and switch unit；
It is connected between the driving unit and the constant voltage source unit by the switch unit, the driving unit is used
In driving the 2nd LED in the LED multi-path, the constant voltage source unit is used to provide operating voltage for the driving unit；
The control module is connect with the switch unit, is also used to control the switch when the first LED is closed
Unit disconnects access and the driving unit is stopped working.
In a kind of possible design, the driving unit includes Isobarically Control subelement and constant current driving subelement；
The Isobarically Control subelement is connect with constant current driving subelement, for generating burning voltage；
Constant current driving subelement is connect with the control module, under the control of the control module, according to
The burning voltage generates light modulation electric current, and the light modulation electric current is for driving the 2nd LED.
In a kind of possible design, the constant current driving subelement is linear power supply or Switching Power Supply.
In a kind of possible design, second drive module includes voltage regulation unit and the second driving unit；
The voltage regulation unit is connect with second driving unit, for generating driving voltage；The voltage regulation unit is used for
Operating voltage is provided for the control module；
Second driving unit is connect with the control module, under the control of the control module, according to institute
It states driving voltage and generates driving current, the driving current is for driving the 2nd LED.
In a kind of possible design, second drive module further includes pressure regulation unit；
The pressure regulation unit is connect with the voltage regulation unit, described defeated for adjusting the output voltage of the voltage regulation unit
Voltage is used to provide operating voltage for the control module out.
In a kind of possible design, the control module includes: wireless communication unit and control unit；
The wireless communication unit is connect with described control unit, for receiving the switch letter of control of intelligent terminal transmission
Number；Wherein, the switching signal is the signal that the switch module access is opened or closed；
Described control unit is connect with the switch module, for responding the switching signal, so that the switch module
Access is opened or closed.
In a kind of possible design, control module includes multiple pulse width modulation (PWM) signaling interfaces, each pulse width
Modulation (PWM) signaling interface is inputted with the PWM input interface of first drive module and the PWM of second drive module respectively
Interface is connected, for providing pulse width modulation (PWM) signal to first drive module and second drive module.
In a kind of possible design, first drive module is decompression transducer, step-down/up type converter and anti-
Any one in excitation type converter.
Second aspect, the present embodiment provides a kind of LED multi-path driving method, this method drives suitable for a kind of LED multi-path
Device, the driving device include the first drive module, the second drive module, switch module and control module；
Wherein, it is connected between first drive module and second drive module by the switch module,
The control module is connect with the switch module；
The described method includes:
First drive module drives the first LED in LED multi-path；
Second drive module drives the 2nd LED in LED multi-path；
Second drive module provides operating voltage by switch module for first drive module；
Control module controls the switch module when the first LED is closed and disconnects access, so that first driving
Module from service.
In a kind of possible design, it is disconnected that the control module controls the switch module when the first LED is closed
Road is opened, so that first drive module stops working and includes:
The switch state of control module acquisition the first LED and/or the 2nd LED；Wherein, the first LED and the 2nd LED extinguish
When be standby mode；
If standby mode, the control module, which generates, disconnects control signal, and the disconnection control signal is opened for controlling
It closes module and disconnects access, so that the first drive module stops working.
LED multi-path driving device and method provided in this embodiment, are loaded based on the first LED, are born supplemented by the 2nd LED
It carries, the first LED is driven by the first drive module, the 2nd LED is driven by the second drive module；First drive module uses one
Grade the first LED of circuit drives reduces power loss when multi-level pmultistage circuit carries out the first LED illumination；Second drive module is the
One drive module provides operating voltage, and when standby (when the first LED and the 2nd LED extinguish), control module is cut by switch module
The supply access of disconnected first drive module, close the first drive module reduces standby so that the first drive module stops working
When power consumption.The present embodiment provides LED multi-path driving device and method, the power supply for cutting off the first drive module by switch module is logical
The driving of the primary circuit of road and the first LED, reduces stand-by power consumption, while having reached higher illumination light efficiency and lower standby
Power consumption meets environmentally protective requirement.
Detailed description of the invention
It, below will be to embodiment or existing skill in order to illustrate more clearly of the present embodiment or technical solution in the prior art
Attached drawing needed in art description is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram for the LED multi-path driving device that an exemplary embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for the LED multi-path driving device that another exemplary embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram for the LED multi-path driving device that the another exemplary embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram for the LED multi-path driving device that the another exemplary embodiment of the present invention provides；
Fig. 5 is the flow diagram for the LED multi-path driving method that an exemplary embodiment of the invention provides；
Fig. 6 is the flow diagram for the LED multi-path driving method that another exemplary embodiment of the present invention provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of the present embodiment clearer, below in conjunction with the attached drawing in the present embodiment,
Technical solution in the present embodiment is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Description and claims of this specification and the term " first " in above-mentioned attached drawing, " second " are for distinguishing class
As object, without being used to describe a particular order or successive number.Term " the packet of description and claims of this specification
Include " and " having " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps
Process or the device of structure those of be not necessarily limited to be clearly listed structure or step but may include being not clearly listed
Or other steps or structure intrinsic for these processes or device.
Belong to "and/or" herein, only a kind of relationship for describing affiliated partner, indicates may exist three kinds of relationships,
For example, A and/or B, can indicate, individualism A exists simultaneously A and B, these three situations of individualism B.
The concrete scene of the present embodiment is that the scene of LED illumination is driven based on multiple-channel output.
The luminous intensity of LED is determined that stable LED luminous intensity needs constant electric current to drive by the electric current for flowing through LED.
The AC/DC converter that alternating current is become to direct current and several grades of constant current controls in multipath LED drive circuit including Isobarically Control
The DC/DC converter that a DC voltage is converted into other DC voltages of system, every paths of LEDs load is by individual DC/DC
Converter realizes constant current drive control, every increase level-one DC/DC converter, and drive efficiency accordingly reduces, and leads to the light of the whole lamp of LED
It imitates poor；When closing LED, AC/DC converter and DC/DC converter are in unloaded operation state, lead to stand-by power consumption
It is larger.Wherein, standby to refer to that all LED are closed.
LED multi-path driving device and method provided in this embodiment, it is intended to solve above-mentioned technical problem, and following solution is provided
Certainly thinking: being loaded based on the first LED, loaded supplemented by the 2nd LED, drives the first LED by the first drive module, by the
Two drive modules drive the 2nd LED；First drive module drives the first LED using primary circuit, reduces multi-level pmultistage circuit progress
Power loss when the first LED illumination；Second drive module provides operating voltage for the first drive module, (the first LED when standby
When extinguishing with the 2nd LED), control module cuts off the supply access of the first drive module by switch module, closes the first driving
Module, so that the first drive module stops working, power consumption when reducing standby.
How technical solution of the present invention and technical solution of the present invention are solved with specifically embodiment below above-mentioned
Technical problem is described in detail.These specific embodiments can be combined with each other below, for the same or similar concept
Or process may repeat no more in certain embodiments.Below in conjunction with attached drawing, the embodiment of the present invention is described.
Fig. 1 is the structural schematic diagram for the LED multi-path driving device that an exemplary embodiment of the invention provides.As shown in Figure 1
LED multi-path driving device includes the first drive module 11, the second drive module 12, switch module 13 and control module 14；The
One drive module 11 is used to drive the first LED15 in LED multi-path；Lead between second drive module 12 and the first drive module 11
The connection of switch module 13 is crossed, the second drive module 12 is used to drive the 2nd LED16 in LED multi-path, and is the first drive module
11 provide operating voltage；Control module 14 is connect with switch module 13, for controlling switch module 13 when the first LED15 is closed
Disconnecting access makes the first drive module 11 stop working.Optionally, the brightness of the first LED15 is greater than the brightness of the 2nd LED16.
During specific implementation, the input terminal of the first drive module 11 is connect with AC power source, output end and first
The input terminal of LED15 connection, the second drive module 12 is connect with AC power source, and output end is connect with the 2nd LED16；Optionally,
Second drive module 12 provides operating voltage to the first drive module 11 and control module 14 simultaneously.It is generated according to control module 14
The first brightness regulated signal, the first drive module 11 generate first light modulation electric current, drive the first LED15；According to control module
14 the second brightness regulated signals generated, the second drive module 12 generate the second light modulation electric current, drive the 2nd LED；Wherein, first
Brightness regulated signal and the second brightness regulated signal are pulse width modulation (Pulse Width Modulation, PWM) letter
Number；First LED is the main load of LED, and for ensureing light efficiency in LED illumination, the 2nd LED is the auxiliary load of LED, and the 2nd LED can be with
It include Multi-path LED load, every paths of LEDs loads a corresponding pwm signal.
In a kind of possible implementation, control module 14 includes single-chip microcontroller, and control module 14 includes multiple pulse widths
Modulation (PWM) signaling interface, each pulse width modulation (PWM) signaling interface respectively with the PWM input interface of the first drive module 11 and
The PWM input interface of second drive module 12 is connected, for mentioning to the first drive module 11 and second drive module 12
For pulse width modulation (PWM) signal.In practical application, register is controlled by the PWM that software adjusts control module 14 to adjust
The duty ratio of PWM adjusts brightness to control the size of light modulation electric current with this.
The switching signal that 13 response module 14 of switch module issues, carries out the disconnection and closure of access.Switch module
13 both ends are separately connected the operating voltage input terminal of the first drive module 11 and the operating voltage output of the second drive module 12
The disconnection and closure of access are realized by switch module 13, and then carries out the on-off of the operating voltage of the first drive module 11 in end
Control.
First drive module 11 is level-one constant-current drive circuit, reduces power loss when the first LED illumination.
In one implementation, the first drive module 11 be with the single tube converter for outputting and inputting isolation, it is defeated
Enter and export isolation, and multiple-channel output may be implemented.Specifically, can be inverse excitation type converter (Flyback converter), flyback
Formula converter is during main switch conducting, and circuit is only stored without transmitting energy；During main switch shutdown, just to negative
Carry a kind of circuit framework of transmitting energy.Using inverse excitation type converter, realize the first drive module 11 output and input every
From.
In another implementation, the first drive module 11 is non-isolated power supply conversion topologies structure, specifically can be with
For any one in decompression transducer, step-down/up type converter.Decompression transducer (Buck converter) is a kind of output
Voltage, which is less than, is input into the single tube of voltage not isolated DC converter.Step-down/up type converter (Buck/Boost converter) is a kind of
Output voltage, which both can be lower than or be higher than, is input into the single tube of voltage not isolated DC converter, but the polarity of its output voltage with it is defeated
It is opposite into voltage.
In practical application, the first drive module 11 and the second drive module 12 respectively drive the first LED15 and second
LED16, the first drive module 11 use level-one driving current；Control module 14 obtains the switch shape of the first LED and the 2nd LED16
State, when the first LED and the 2nd LED extinguishes (when i.e. standby), 14 control switch module 13 of control module disconnects access, so that the
One drive module 11 stops working.Since the first drive module 11 is for generating the first light modulation electric current, power consumption is very big, and first
Drive module 11 stops working, and first drive module 11 does not stop working in the prior art, when standby compares, and can be greatly reduced
Stand-by power consumption.
It should be understood that control module 14 obtains the switch state of the first LED, control switch when only the first LED extinguishes
Module 13, which disconnects Tonglu, can also realize the lower work function of LED multi-path driving device so that the first drive module 11 stops working
Consumption.
Fig. 2 is the structural schematic diagram for the LED multi-path driving device that an exemplary embodiment of the invention provides.Fig. 2 is in Fig. 1
On the basis of the embodiment described, the composition of the second drive module is optimized.
It is as described in Figure 2:
Second drive module 12 includes constant voltage source unit 121；Constant voltage source unit 121 is used to be the first drive module 11
Constant voltage source unit described in operating voltage is provided, constant voltage source unit 121 can be used for providing work electricity for control module 14
Pressure.Constant voltage source unit 121 is independent power module, to ensure that power conversion efficiency, constant voltage source unit can be switch
Power supply.
In one possible implementation, the second drive module 12 further includes the first driving unit 122 and switch unit
123；It is connected between first driving unit 122 and constant voltage source unit 121 by switch unit 123；Control module 14 and switch
Unit 123 connects, and is also used to the control switch unit 123 disconnection access when the first LED15 is closed and makes the first driving unit 122
It stops working.In the present embodiment, the 2nd LED16 in the first driving unit 122 driving LED multi-path, constant voltage source unit 121
Operating voltage is provided for the first driving unit 122.It should be understood that switch unit 123 can be identical with switch module 13
Structure carries out the disconnection and closure of access for the switching signal that response module 14 issues.
In a kind of possible implementation, the first driving unit 122 includes that Isobarically Control subelement and constant current driving are single
Member；Isobarically Control subelement is connect with constant current driving subelement, for generating burning voltage；Constant current drives subelement and control mould
Block 14 connects, and under the control of control module 14, generates light modulation electric current according to burning voltage, and light modulation electric current is for driving the
Two LED16.It should be understood that light modulation electric current herein is the second light modulation electric current in Fig. 1 embodiment.
Optionally, constant current driving subelement is linear power supply or Switching Power Supply.
In the present embodiment, the first drive module 11, control module 14 and the first driving unit 122 are by constant voltage source list
Member 121 provides operating voltage, the first drive module of 13 both ends of switch module connection 11 and constant voltage source unit 121, switch unit
The first driving unit of 123 both ends connection 122 and constant voltage source unit 121；When work, control module 14 obtains the first LED and the
The switch state of two LED, when the first LED and the 2nd LED extinguishes (when i.e. standby), control switch module 13 and switch unit
123 disconnect access, so that the first drive module 11 and the first driving unit 122 stop working.At this point, only permanent in driving device
Power supply unit 121 and control module 14 are in running order, lower low-power consumption when realizing standby.
Fig. 3 is the structural schematic diagram for the LED multi-path driving device that the another exemplary embodiment of the present invention provides.
Fig. 3 is that the composition of the second drive module is optimized on the basis of Fig. 1 the embodiment described.
It is as described in Figure 3:
Second drive module 12 includes voltage regulation unit and the second driving unit；Voltage regulation unit is connect with the second driving unit,
For generating driving voltage；Voltage regulation unit is used to provide operating voltage for control module 14；Second driving unit and control module
14 connections, for generating driving current according to the driving voltage, driving current is for driving under the control of institute's control module 14
Dynamic 2nd LED16.
Voltage regulation unit is constant pressure control unit, voltage regulation unit can for the single tube converter for outputting and inputting isolation,
May be decompression transducer (Buck converter).Optionally, it is equipped with voltage regulating module between voltage regulation unit and control module, uses
In the output services voltage swing for adjusting voltage regulation unit, voltage regulating module is DC/DC module.
Voltage regulation unit passes through the voltage input end of switch module 13 and the first drive module 11, is used for the first drive module 11
Operating voltage is provided.In the present embodiment, voltage regulation unit is that the first drive module 11 and control module 14 provide operating voltage, simultaneously
Driving voltage is provided for the second driving unit, realizes the integrated of circuit.
Fig. 4 is the structural schematic diagram for the LED multi-path driving device that the another exemplary embodiment of the present invention provides.Fig. 4 be
On the basis of above-described embodiment, such as on the basis of Fig. 1 the embodiment described, the composition of control module is optimized.Such as
Described in Fig. 4:
Control module 14 includes wireless communication unit and control unit, and wireless communication unit connect with control unit, is used for
Receive the switching signal that control of intelligent terminal 17 is sent；Wherein, switching signal is the letter that 13 access of switch module is opened or closed
Number, control of intelligent terminal 17 includes any one of following: smart phone, computer, personal digital assistant and intelligent wearable device.
Wireless communication unit can be the circuit comprising communication chip, be specifically used for passing through wireless networking arrangement from intelligent control
Terminal 17 processed receives the switching signal of the first LED15.The wireless networking arrangement can be following any one: Wireless Fidelity
(Wireless Fidelity, Wi-Fi) router, ZigBee protocol (ZigBee) gateway and radio frequency route coordination machine.
The application program for sending control signal is installed, user sends the by the application program on control of intelligent terminal 17
The switch state of one LED and the 2nd LED, optionally, user can pass through the application setting the first LED's and the 2nd LED
Brightness regulation value, application program generate brightness regulation information according to brightness regulation value set by user, to realize to the first LED
With the adjusting of the brightness of illumination of the 2nd LED.
In concrete application, control unit is connect with wireless routing unit, is received switching signal and is obtained the first LED and second
The switch state of LED responds the switching signal and issues control signal.
In one implementation, control unit is connect with switch module 13, receives switching signal and responding to switch signal,
Control switch module 13 disconnects access, so that the first drive module 11 stops working.
In another implementation, control unit is connect with switch unit 123, receives switching signal and responding to switch letter
Number, control switch unit 123 disconnects access, so that the first driving unit 122 stops working.
In the present embodiment, unit realizes the long-range control of control unit by wireless communication, and then realizes switching molding
The long-range control of 123 access of 13 access of block and switch unit.In order to clearly illustrate the present embodiment, in a kind of possible applied field
Jing Zhong, control of intelligent terminal 17 are smart phone, and wireless networking arrangement is wireless router, and control unit passes through Wi-Fi module
It is connected on wireless router, equipped with the APP for sending switching signal on control of intelligent terminal 17.When user observes first
After LED15 and the 2nd LED16 extinguishes, OFF signal is sent to control unit by smart phone, control unit responds OFF letter
Number, control switch module 13 and switch unit 123 disconnect access, so that the first drive module 11 and the first driving unit 122 stop
It only works, realizes lower stand-by power consumption.As the first LED15 and the 2nd LED16 in running order, user can also pass through
Control of intelligent terminal 17 sends OFF/ON signal to control unit, passes through control unit control switch module 13 and switch unit
123 are opened or closed access, realize the remote switch control of the first LED15 and the 2nd LED16.It should be understood that the first LED15
It is individually driven with the 2nd LED16, therefore remote switch control can be carried out respectively.
Fig. 5 is the flow diagram for the LED multi-path driving method that one embodiment of the invention provides.This method is suitable for one kind
LED multi-path driving device, by taking Fig. 1 embodiment driving device as an example, driving device includes that the first drive module 11, second drives mould
Block 12, switch module 13 and control module 14；Pass through switch module between first drive module 11 and the second drive module 12
13 connections, control module 14 are connect with switch module 13.
As shown in figure 5, this method may include steps of:
S501, the first drive module drive the first LED15 in 11 driving LED multi-paths.
The 2nd LED16 in S502, the second drive module 12 driving LED multi-path.
S503, the second drive module 12 are that the first drive module 11 provides operating voltage by switch module 13.
S504, control module 14 the control switch module 13 when the first LED15 is closed disconnect access, so that the first driving mould
Block 11 stops working.
In practical application, the first drive module 11 and the second drive module 12 respectively drive the first LED15 and second
LED16, the first drive module 11 use level-one driving current, can ensure illuminating effect by biggish first light modulation electric current；
Control module 14 obtains the switch state of the first LED, when the first LED and the 2nd LED extinguishes (when i.e. standby), control switch mould
Block 13 disconnects access, so that the first drive module 11 stops working.Since the first drive module 11 is for generating the first light modulation electricity
Stream is maximum power consumption module, and the first drive module 11 stops working, and in the prior art, first drives mould when standby
Block 11, which does not stop working, to be compared, power consumption when greatly reducing standby.
Fig. 6 is the flow diagram for the LED multi-path driving method that further embodiment of this invention provides.Fig. 6 is based on Fig. 5 institute
The method stated carries out expansion explanation to S504 step, as described in Figure 6, this method comprises:
S601, control module 14 obtain the switch state of the first LED15 and/or the 2nd LED16；Wherein, as the first LED15
It is standby mode when extinguishing with the 2nd LED16；
In one embodiment, control module 14 receives the switching signal that control of intelligent terminal is sent, and obtains first
The switch state of LED15 and/or the 2nd LED, control of intelligent terminal can be following any one: smart phone, computer, individual
In digital assistants and intelligent wearable device.
S602, if standby mode, control module 14, which generates, disconnects control signal, disconnects control signal and is used for control switch
Module 13 disconnects access, so that the first drive module 11 stops working.
Optionally, if the first LED15 extinguishes, control module 14, which generates, disconnects control signal, disconnects control signal and is used for
Control switch module 13 disconnects access, so that the first drive module 11 stops working.
After user observes that the first LED extinguishes or when the first LED and the 2nd LED extinguishes (i.e. when standby mode),
OFF signal is sent to control module 14 by control of intelligent terminal, control module 14 responds the OFF signal, control switch module
13 disconnection accesses realize lower stand-by power consumption so that the first drive module 11 stops working.When the first LED is in work shape
When state, user can also send OFF/ON signal to control module 14 by control of intelligent terminal, be opened by control unit control
It closes module 13 and access is opened or closed, realize the remote switch control of the first LED.
Above-mentioned LED multi-path driving method accordingly can be adapted for the skill of the LED multi-path driving device of any embodiment
Art scheme, it is similar that the realization principle and technical effect are similar, and details are not described herein.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of LED multi-path driving device characterized by comprising the first drive module, the second drive module, switch module
And control module；
Wherein, first drive module is used to drive the first LED in the LED multi-path；
It is connected between second drive module and first drive module by the switch module, the second driving mould
Block is used to drive the 2nd LED in the LED multi-path, and provides operating voltage for first drive module；
The control module is connect with the switch module, disconnected for controlling the switch module when the first LED is closed
Opening road makes first drive module stop working.
2. driving device according to claim 1, which is characterized in that second drive module includes constant voltage source list
Member；
The constant voltage source unit is used to provide operating voltage for first drive module；And/or
The constant voltage source unit is used to provide operating voltage for the control module.
3. driving device according to claim 2, which is characterized in that second drive module further includes the first driving list
Member and switch unit；
It is connected between first driving unit and the constant voltage source unit by the switch unit, first driving is single
For driving the 2nd LED in the LED multi-path, the constant voltage source unit is used to provide work for first driving unit member
Make voltage；
The control module is connect with the switch unit, is also used to control the switch unit when the first LED is closed
Disconnecting access makes first driving unit stop working.
4. driving device according to claim 3, which is characterized in that first driving unit includes that Isobarically Control is single
Member and constant current drive subelement；
The Isobarically Control subelement is connect with constant current driving subelement, for generating burning voltage；
Constant current driving subelement is connect with the control module, under the control of the control module, according to described
Burning voltage generates light modulation electric current, and the light modulation electric current is for driving the 2nd LED.
5. driving device according to claim 4, which is characterized in that the constant current driving subelement is linear power supply or opens
Powered-down source.
6. driving device according to claim 1, which is characterized in that second drive module includes voltage regulation unit and
Two driving units；
The voltage regulation unit is connect with second driving unit, for generating driving voltage；The voltage regulation unit is used for as institute
It states control module and operating voltage is provided；
Second driving unit is connect with the control module, under the control of the control module, according to the drive
Dynamic voltage generates driving current, and the driving current is for driving the 2nd LED.
7. driving device according to claim 6, which is characterized in that second drive module further includes pressure regulation unit；
The pressure regulation unit is connect with the voltage regulation unit, for adjusting the output voltage of the voltage regulation unit, the output electricity
Pressure is for providing operating voltage for the control module.
8. driving device according to claim 1, which is characterized in that the control module include: wireless communication unit and
Control unit；
The wireless communication unit is connect with described control unit, for receiving the switching signal of control of intelligent terminal transmission；Its
In, the switching signal is the signal that the switch module access is opened or closed；
Described control unit is connect with the switch module, for responding the switching signal, so that the switch module disconnects
Or close access.
9. driving device according to claim 1, which is characterized in that control module includes multiple pulse width modulation (PWM)s
Signaling interface, each pulse width modulation (PWM) signaling interface respectively with the PWM input interface of first drive module and described
The PWM input interface of two drive modules is connected, for providing arteries and veins to first drive module and second drive module
Rush width modulated pwm signal.
10. driving device according to claim 1, which is characterized in that first drive module be decompression transducer,
Any one in step-down/up type converter and inverse excitation type converter.
11. a kind of LED multi-path driving method, which is characterized in that
This method is suitable for a kind of LED multi-path driving device, and the driving device includes the first drive module, the second driving mould
Block, switch module and control module；
Wherein, it is connected between first drive module and second drive module by the switch module, it is described
Control module is connect with the switch module；
The described method includes:
First drive module drives the first LED in LED multi-path；
Second drive module drives the 2nd LED in LED multi-path；
Second drive module provides operating voltage by switch module for first drive module；
Control module controls the switch module when the first LED is closed and disconnects access, so that first drive module
It stops working.
12. driving method according to claim 11, which is characterized in that the control module is closed in the first LED
When control the switch module and disconnect access so that first drive module stops working and includes:
The switch state of control module acquisition the first LED and/or the 2nd LED；Wherein, it is when the first LED and the 2nd LED extinguish
Standby mode；
If standby mode, the control module, which generates, disconnects control signal, and the disconnection control signal is used for control switch mould
Block disconnects access, so that the first drive module stops working.
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| CN109803467B (en) | 2024-04-12 |
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