CN109348588A - LED lamp firm power control method and device - Google Patents
LED lamp firm power control method and device Download PDFInfo
- Publication number
- CN109348588A CN109348588A CN201811540606.9A CN201811540606A CN109348588A CN 109348588 A CN109348588 A CN 109348588A CN 201811540606 A CN201811540606 A CN 201811540606A CN 109348588 A CN109348588 A CN 109348588A
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- led lamp
- current
- led
- adjustment
- duty ratio
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of LED lamp firm power control method and devices, by setting, acquisition, set-up procedure come so that the electric current for acting on LED lamp both ends reaches setting value, finally LED lamp can be realized and constant output is carried out with certain power, so that the luminous flux of LED lamp remains unchanged always, the present invention is adjusted duty ratio using adjustment device, so as to adjust the electric current for acting on LED lamp both ends, realizes firm power output, extend the service life of LED lamp；Use invariable power circuit simultaneously, LED lamp to connect voltage range big, be not necessarily to external regulator, application is more extensive；It is finally provided with display device, as there is situations such as can not adjusting, can also be shown in time by display device, to guarantee entire circuit long-term stable work.
Description
Technical field
The present invention relates to LED lamp field more particularly to a kind of LED lamp firm power control method and devices.
Background technique
After lighting area is using LED lamp, since LED lamp has, luminous efficiency is high, energy-saving effect is obvious, the service life is long
And pollution-free equal remarkable advantages, it is increasingly subject to the attention of countries in the world, it is especially this in the countries and regions of energy shortage
Demand is stronger；When LED lamp is linked into alternating current, since the current value and voltage value of alternating current are in a kind of fluctuation always
State, therefore converted always using the luminous power of the LED lamp of alternating current, it can not be worked using constant power, from
And the service life of LED lamp is reduced, furthermore the long-time of LED lamp uses, and the luminous flux of lamps and lanterns can gradually decrease, and illuminates
Effect is gradually lowered；Furthermore common emergency power supply is constant current output currently on the market, output electric current be it is certain, in this way
Emergency power supply band difference string number lamps and lanterns, string number different voltages are just different, will lead in this way need different capacity answer urgent telegram
Source.
Summary of the invention
Shortcoming present in view of the above technology, the present invention provide a kind of LED lamp firm power control method and
Device, by adjusting the electric current at LED lamp both ends, so that different LED lamps is all worked using constant power.
To achieve the above object, the present invention provides a kind of LED lamp firm power control method, comprising the following steps:
Setting: one performance number of input, so that LED lamp is worked using the performance number；
Obtain stream: the virtual voltage of measurement LED lamp operating circuit, and calculate at this voltage using current value when setting power
Size；
Actual current value in circuit: being adjusted to the current value size calculated, and acted in LED lamp by adjustment, so that
LED lamp carries out temperature work using the power.
Preferably, further including detecting step before obtaining step, the detecting step is for detecting entire LED lamp
The connection situation of operating circuit is supported to provide data for subsequent step.
Preferably, detection obtains the voltage of LED lamp operating circuit, and is counted according to formula I=P/U in obtaining flow step
Calculate the current value size obtained in the case where setting power.
Preferably, carrying out electricity to operating circuit where LED lamp by adjusting duty ratio in the set-up procedure
Stream adjustment, so that the actual current for flowing through LED lamp is identical as calculated size of current.
Preferably, if the duty ratio after adjustment is more than maximum duty cycle, being accounted for according to maximum when adjusting duty ratio
Empty ratio works, if the duty ratio after adjustment is less than minimum duty cycle, is worked using minimum duty cycle；And at this time
Issue early warning.
The invention also discloses a kind of LED firm power control devices, including with lower component:
Control device: control to entire LED operation circuit, for instruction typing and know the work of entire circuit
Situation；
Monitoring device: the operating voltage for acting on LED lamp both ends, and the current value size for passing through LED lamp are obtained；
Computing device: for receiving data information acquired in monitoring device, according to the power of typing and the voltage value that detects,
Calculate standard current value；
It adjusts device: carrying out current regulation for the operating circuit to LED lamp, convert electric current, so that finally making
The actual current that LED lamp must be flowed through is identical as standard current value.
Preferably, including detection device, display device and input device in the control device, the detection device is used
In the connection situation for detecting entire LED lamp operating circuit, so that it is guaranteed that entire circuit can form complete circuit, LED lamp
It can be worked normally after installation, the display device is used to indicate voltage value, current value and performance number when LED lamp work；Institute
Input device is stated for setting to the operating power of LED lamp.
Preferably, monitoring device includes current measuring device and voltage check device, current measuring device obtains LED light
The size of current of operating circuit where having, the voltage that voltage measuring apparatus is used to obtain the operating circuit where LED lamp are big
It is small；For monitoring device by the data information transfer being collected into computing device, computing device is according to the information of voltage in circuit and sets
Determine the size that power meter calculates the normalized current of LED lamp, and the actual current value obtained with current measuring device is compared
Compared with, and pass information to adjustment device.
Preferably, the adjustment device is adjusted the electric current at LED lamp both ends according to the information of computing device, institute
It states adjustment device and electric current is adjusted by adjusting duty ratio, so that the actual current of LED lamp and normalized current phase
Together.
Preferably, can not be more than the duty ratio setting of adjustment device when duty ratio is adjusted in the adjustment device
Range works if the duty ratio after adjustment is more than maximum duty cycle according to maximum duty cycle, if accounting for after adjustment
Sky is worked, and reminded by display device than being less than minimum duty cycle using minimum duty cycle.
The beneficial effects of the present invention are: the present invention is adjusted duty ratio using regulator, so as to adjust acting on
The electric current at LED lamp both ends, so that LED lamp is worked using firm power；Monitoring device, computing device and adjustment device
Uninterruptedly LED lamp is detected and modulated, so that the luminous flux of LED lamp remains constant, realizes that firm power is defeated
Out, the service life of LED lamp is extended；Use invariable power circuit simultaneously, LED lamp to connect voltage range big, without outer
Regulator is connect, application is more extensive；It is finally provided with display device, it, also can be in time by aobvious as there is situations such as can not adjusting
Showing device is shown, to guarantee entire circuit long-term stable work.
Detailed description of the invention
Fig. 1 is method general flow chart of the invention；
Fig. 2 is detailed structure view of the invention；
Fig. 3-Fig. 7 is circuit diagram of the embodiment of the present invention.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described with reference to the accompanying drawing.
Fig. 1 and Fig. 2 are please referred to, the present invention provides a kind of LED lamp firm power control method, comprising the following steps:
Setting: one performance number of input, so that LED lamp is worked using the performance number；
Obtain stream: the virtual voltage of measurement LED lamp operating circuit, and calculate at this voltage using current value when setting power
Size；
Actual current value in circuit: being adjusted to the current value size calculated, and acted in LED lamp by adjustment, so that
LED lamp carries out temperature work using the power.In this step, first according to use demand, input one is no more than LED light
Have the performance number of work, so that LED lamp works using the power as firm power, then detection effect and LED lamp
Voltage value, the current value size obtained in the case where setting power is calculated according to formula I=P/U, using the current value as standard electric
Flow valuve, the then actual current value size in detection circuit, and actual current value is adjusted to standard current value, to realize
LED lamp carries out constant power operations at this voltage.
It certainly, further include detecting step, detecting step is for detecting entire LED lamp operating circuit before obtaining step
Connection situation, thus for subsequent step provide data support.
Preferably, further including detecting step, detecting step is for detecting entire LED lamp work in obtaining flow step
The connection situation of circuit needs to carry out on-off to the circuit in order to ensure the operating circuit of access LED lamp can work normally
Detection, so that it is guaranteed that data support can be provided for subsequent step.
Preferably, carrying out electricity to operating circuit where LED lamp by adjusting duty ratio in the set-up procedure
Stream adjustment, so that the actual current for flowing through LED lamp is identical as calculated size of current；More specifically, it is adjusting
When saving duty ratio, if the duty ratio after adjustment is more than maximum duty cycle, work according to maximum duty cycle, if adjusting it
Duty ratio afterwards is less than minimum duty cycle, is worked using minimum duty cycle；And early warning is issued at this time.
The invention also discloses a kind of LED firm power control devices, including with lower component:
Control device: control to entire LED operation circuit, for instruction typing and know the work of entire circuit
Situation；
Monitoring device: the operating voltage for acting on LED lamp both ends, and the current value size for passing through LED lamp are obtained；
Computing device: for receiving data information acquired in monitoring device, according to the power of typing and the voltage value that detects,
Calculate standard current value；
It adjusts device: carrying out current regulation for the operating circuit to LED lamp, convert electric current, so that finally making
The actual current that LED lamp must be flowed through is identical as standard current value.In the present embodiment, control device is as master controller, with
Each device is electrical connected；Monitoring device, computing device and modulating device three are electrically connected.
It in the present embodiment, include detection device, display device and input device in control device, detection device is for examining
The connection situation of entire LED lamp operating circuit is surveyed, so that it is guaranteed that entire circuit can form complete circuit, LED lamp installation
After can work normally, display device be used to indicate LED lamp work when voltage value, current value and performance number；Input device is used
It is set in the operating power to LED lamp.
Monitoring device includes current measuring device and voltage check device, and current measuring device obtains where LED lamp
The size of current of operating circuit, voltage measuring apparatus are used to obtain the voltage swing of the operating circuit where LED lamp；Monitoring dress
The data information transfer that be collected into is set to computing device, computing device is according to the information and setting power calculation of voltage in circuit
The size of the normalized current of LED lamp out, and the actual current value obtained with current measuring device is compared, and by information
Pass to adjustment device.
Adjustment device is adjusted the electric current at LED lamp both ends according to the information of computing device, and adjustment device passes through tune
Section duty ratio is adjusted electric current, so that the actual current of LED lamp is identical as normalized current.
It certainly, can not be more than the duty ratio setting range of adjustment device, if adjusting when duty ratio is adjusted in adjustment device
Duty ratio after whole is more than maximum duty cycle, then works according to maximum duty cycle, if the duty ratio after adjustment is less than
Minimum duty cycle is worked using minimum duty cycle, and is reminded by display device.
Below using specific implementing circuit as detailed description of the invention:
Fig. 3 to Fig. 7 is please referred to, needs to be mounted on LED lamp in 230V circuit and is worked with some firm power, passes through inspection
Voltage, the current value for surveying LED, to accurately reach LED constant power output.
230V+ is LED output voltage point, by R14, R322, R321 electric resistance partial pressure, recycles monolithic machine testing LED electricity
Pressure value, ISS foot, then by U3 operation amplifying circuit, obtain ISS signal for detecting that LED output voltage values are 230V-,
Single-chip microcontroller is by detecting ILED and VLED foot, and by single-chip microcontroller internal arithmetic, single-chip microcontroller is defeated to adjust by adjusting duty ratio
Electric current out；ISS signal exports PWN-DIM waveform by pin 14, by integrating circuit (R120/C45/R121/C44 composition),
IS foot is being exported by the principle of U1-A follower, thus change the output current value of LED, the current value of final output and effect
In LED lamp, so that LED reaches constant power output.
Present invention has an advantage that
1) LED lamp that the invariable power circuit is suitable for the super wide range of 8 strings to 77 strings uses, as long as fixtures parameters are in 25-
In the range of 230V, LED lamp output power can be ensured of it is constant, so the invention can be wide in LED lamp
General application；
2) LED lamp of all accesses all uses constant power operations, to satisfy the use demand.
Disclosed above is only several specific embodiments of the invention, but the present invention is not limited to this, any ability
What the technical staff in domain can think variation should all fall into protection scope of the present invention.
Claims (10)
1. a kind of LED lamp firm power control method, which comprises the following steps:
Setting: one performance number of input, so that LED lamp is worked using the performance number；
Obtain stream: the virtual voltage of measurement LED lamp operating circuit, and calculate at this voltage using current value when setting power
Size；
Actual current value in circuit: being adjusted to the current value size calculated, and acted in LED lamp by adjustment, so that
LED lamp carries out temperature work using the power.
2. LED firm power control method according to claim 1, which is characterized in that further include inspection before obtaining step
Step is surveyed, the detecting step is used to detect the connection situation of entire LED lamp operating circuit, to provide number for subsequent step
According to support.
3. LED firm power control method according to claim 1, which is characterized in that in obtaining flow step, detection is obtained
The voltage of LED lamp operating circuit, and the current value size obtained in the case where setting power is calculated according to formula I=P/U.
4. LED firm power control method according to claim 1, which is characterized in that in the set-up procedure, pass through
Adjust duty ratio to carry out electric current adjustment to operating circuit where LED lamp so that flow through the actual current of LED lamp with
Calculated size of current is identical.
5. LED firm power control method according to claim 4, which is characterized in that when adjusting duty ratio, if adjustment
Duty ratio later is more than maximum duty cycle, then works according to maximum duty cycle, if the duty ratio after adjustment is less than most
Small duty ratio, is worked using minimum duty cycle；And early warning is issued at this time.
6. a kind of LED firm power control device, which is characterized in that including with lower component:
Control device: control to entire LED operation circuit, for instruction typing and know the work of entire circuit
Situation；
Monitoring device: the operating voltage for acting on LED lamp both ends, and the current value size for passing through LED lamp are obtained；
Computing device: for receiving data information acquired in monitoring device, according to the power of typing and the voltage value that detects,
Calculate standard current value；
It adjusts device: carrying out current regulation for the operating circuit to LED lamp, convert electric current, so that finally making
The actual current that LED lamp must be flowed through is identical as standard current value.
7. LED firm power control device according to claim 6, which is characterized in that include inspection in the control device
Device, display device and input device are surveyed, the detection device is used to detect the connection situation of entire LED lamp operating circuit,
So that it is guaranteed that entire circuit can form complete circuit, can be worked normally after LED lamp installation, the display device is used to indicate
Voltage value, current value and performance number when LED lamp works；The input device is used to carry out the operating power of LED lamp
Setting.
8. LED firm power control device according to claim 6, which is characterized in that monitoring device includes current measurement
Device and voltage check device, current measuring device obtain the size of current of the operating circuit where LED lamp, voltage measurement dress
Set the voltage swing for obtaining the operating circuit where LED lamp；Monitoring device is by the data information transfer being collected into meter
Device is calculated, computing device calculates the size of the normalized current of LED lamp according to the information and setting power meter of voltage in circuit, and
And the actual current value obtained with current measuring device is compared, and passes information to adjustment device.
9. LED firm power control device according to claim 6, which is characterized in that the adjustment device is according to calculating
The information of device is adjusted the electric current at LED lamp both ends, and the adjustment device adjusts electric current by adjusting duty ratio
It is whole, so that the actual current of LED lamp is identical as normalized current.
10. LED firm power control device according to claim 9, which is characterized in that the adjustment device is to duty ratio
It can not be more than the duty ratio setting range of adjustment device when being adjusted, if the duty ratio after adjustment is more than maximum duty cycle,
It then works according to maximum duty cycle, if the duty ratio after adjustment is less than minimum duty cycle, is carried out using minimum duty cycle
Work, and reminded by display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540606.9A CN109348588B (en) | 2018-12-17 | 2018-12-17 | Constant power control method and device for LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540606.9A CN109348588B (en) | 2018-12-17 | 2018-12-17 | Constant power control method and device for LED lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109348588A true CN109348588A (en) | 2019-02-15 |
| CN109348588B CN109348588B (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811540606.9A Active CN109348588B (en) | 2018-12-17 | 2018-12-17 | Constant power control method and device for LED lamp |
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|---|---|---|---|---|
| CN102300354A (en) * | 2010-06-25 | 2011-12-28 | 纮华光电股份有限公司 | Device and method for adjusting output power of light-emitting diode |
| CN205283405U (en) * | 2015-12-24 | 2016-06-01 | 杭州士兰微电子股份有限公司 | Constant power control circuit and contain actuating system of said constant power control circuit |
| CN106455211A (en) * | 2016-10-09 | 2017-02-22 | 浙江大学城市学院 | Control method for novel same-power universal driving power supply for LED lamp |
| CN106809227A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | The control system and control method of railroad vehicle and car light |
| CN108684103A (en) * | 2018-05-24 | 2018-10-19 | 深圳市健森科技有限公司 | A kind of wide-voltage range output constant power LED drive power circuit system |
| CN108712801A (en) * | 2018-06-27 | 2018-10-26 | 深圳市明微电子股份有限公司 | A kind of the Constant-power drive circuit and device of wide input voltage |
| CN208386976U (en) * | 2018-08-08 | 2019-01-15 | 南昌市诺珂光电有限公司 | A kind of LED control circuit of invariable power |
-
2018
- 2018-12-17 CN CN201811540606.9A patent/CN109348588B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300354A (en) * | 2010-06-25 | 2011-12-28 | 纮华光电股份有限公司 | Device and method for adjusting output power of light-emitting diode |
| CN205283405U (en) * | 2015-12-24 | 2016-06-01 | 杭州士兰微电子股份有限公司 | Constant power control circuit and contain actuating system of said constant power control circuit |
| CN106809227A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | The control system and control method of railroad vehicle and car light |
| CN106455211A (en) * | 2016-10-09 | 2017-02-22 | 浙江大学城市学院 | Control method for novel same-power universal driving power supply for LED lamp |
| CN108684103A (en) * | 2018-05-24 | 2018-10-19 | 深圳市健森科技有限公司 | A kind of wide-voltage range output constant power LED drive power circuit system |
| CN108712801A (en) * | 2018-06-27 | 2018-10-26 | 深圳市明微电子股份有限公司 | A kind of the Constant-power drive circuit and device of wide input voltage |
| CN208386976U (en) * | 2018-08-08 | 2019-01-15 | 南昌市诺珂光电有限公司 | A kind of LED control circuit of invariable power |
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| CN109348588B (en) | 2021-10-15 |
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