CN114071834A - Constant voltage lamp strip driving device based on configurable output current constant current type power supply - Google Patents
Constant voltage lamp strip driving device based on configurable output current constant current type power supply Download PDFInfo
- Publication number
- CN114071834A CN114071834A CN202010763433.8A CN202010763433A CN114071834A CN 114071834 A CN114071834 A CN 114071834A CN 202010763433 A CN202010763433 A CN 202010763433A CN 114071834 A CN114071834 A CN 114071834A
- Authority
- CN
- China
- Prior art keywords
- constant
- power supply
- voltage
- lamp strip
- constant voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
-
- 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
- H05B45/345—Current stabilisation; Maintaining constant current
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a constant voltage lamp strip driving device based on a constant current type power supply with configurable output current, which comprises a constant current type power supply, a driver and a lamp strip, wherein the constant current type power supply is connected with the lamp strip through the driver, and the lamp strip is a constant voltage lamp strip or a constant current lamp strip; the device adopts the combination of a constant current type dimming power supply and a constant voltage type lamp strip, and can obtain good dimming effect at high and low brightness. Compared with the prior art, the constant-voltage dimming power supply has the advantages that the constant-voltage dimming power supply can keep the consistent brightness of the constant-voltage lamp strip driven by the constant-voltage dimming power supply under the condition of long distance and high brightness, and the constant-current dimming power supply can drive the constant-current lamp strip to have good brightness consistency under the condition of low brightness.
Description
Technical Field
The invention relates to an LED lamp strip driving device, in particular to a constant voltage lamp strip driving device based on a constant current type power supply with configurable output current.
Background
At present, LED lamp belts in the market can be divided into constant-voltage LED lamp belts and constant-current LED lamp belts according to a driving mode. The constant-voltage LED lamp strip is suitable for a constant-voltage dimming power supply, the specification of the lamp strip is DC12V, 24V, 36V, 48V and the like, and the output voltage of the power supply needs to be matched with the voltage of the lamp strip in advance; the constant current LED lamp area is adapted to a constant current type dimming power supply, and the power supply can be freely configured according to the current specification of the lamp area.
Because the lamp area is through the transmission line transmission current, no matter be the constant current or the constant voltage mode all has the line loss (the line loss is exactly the voltage loss on the circuit). The farther the transmission distance, the larger the transmission current and the larger the line loss.
The dimming scheme of the constant voltage type dimming power supply is as follows: the voltage amplitude of the rectangular wave output by the power supply port is unchanged, and the brightness is changed by adjusting the duty ratio of the rectangular wave. Line losses are present only when there is current on the line, i.e. when the square wave is high.
Because the line loss is related to the physical characteristics of the transmission line and the instantaneous current on the transmission line, the line loss of each LED is determined to be unchanged after the LED lamp strip is installed. When the lamp strip is output with high brightness, although the current amplitudes of the LEDs are different, human eyes are insensitive to the brightness difference between the LEDs under the high brightness; when the brightness is low, the duty ratio of the high level of the rectangular wave is reduced, although the current amplitude of each LED is the same as that of the LED with high brightness, the brightness difference between the LEDs on the lamp strip is very obvious because the sensitivity of human eyes to the low brightness is high. As shown in fig. 1. The maximum length of single-end power supply of a common LED lamp strip is only 10 meters (the maximum length of double-end power supply can be 20 meters).
The dimming scheme of the constant current type dimming power supply is as follows: dimming is performed by amplitude control of the output current. Similarly, the output current is large and the line loss is large at high brightness.
And the dynamic resistance r of the lamp bead sharply increases along with the reduction of the voltage at the two ends of the LED. In high brightness, the voltage at two ends of the LED at the far end of the constant-current LED lamp strip is reduced due to large line loss, the internal resistance is increased, the LED current is sharply reduced, human eyes are insensitive to high brightness difference, and therefore the brightness difference of each LED is not obvious. And when the brightness is low, because the power output is low pulsating direct current, the line loss is very small, the voltages of the LEDs on the lamp strip are almost equal, as long as the characteristics of the LED lamp beads are close, the currents of the LEDs are basically the same, the brightness difference is small, and a good dimming effect can be obtained, as shown in fig. 2.
Because the series resistance R of the constant voltage type lamp strip is far larger than the bead dynamic resistance R of the constant current type lamp strip, under the condition that the line loss of the long-distance high brightness is the same, the constant voltage lamp strip driven by the constant voltage type power supply has better current consistency than the constant current type lamp strip driven by the constant current type power supply, but human eyes are insensitive to the difference due to high brightness; and when the brightness is low, the line loss of the constant current type lamp strip is greatly reduced, and the brightness difference of the constant current type lamp strip driven by the constant current type power supply is far better than that of a long-distance constant voltage lamp strip driven by a constant voltage type power supply.
Therefore, how to keep the constant-voltage dimming power supply to drive the constant-voltage lamp strip to have consistent brightness under the condition of long distance and high brightness, and the constant-current dimming power supply to drive the constant-current lamp strip to have good brightness consistency under the condition of low brightness becomes the problem to be solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a constant voltage lamp strip driving device based on a constant current type power supply with configurable output current.
The purpose of the invention can be realized by the following technical scheme:
a constant voltage lamp strip driving device based on a constant current type power supply with configurable output current comprises a constant current type power supply, a driver and a lamp strip, wherein the constant current type power supply is connected with the lamp strip through the driver, and the lamp strip is a constant voltage lamp strip or a constant current lamp strip;
the device adopts the combination of a constant current type dimming power supply and a constant voltage type lamp strip, and can obtain good dimming effect at high and low brightness.
Preferably, the driver is a configurable driver.
Preferably, the driver may be configured as a constant current type driver or a constant voltage type driver.
Preferably, the driver is provided with a voltage configuration circuit for the constant voltage light strip for configuring a voltage function of the constant voltage type lamp when the driving of the constant voltage light strip is selected.
Preferably, the driver is provided with a feedback voltage acquisition circuit and an output current regulating circuit, and is used for automatically regulating the maximum output current according to the feedback voltage when the constant voltage lamp strip is driven, so that the output load voltage and the set constant voltage lamp strip are always within a set error range.
Preferably, the constant voltage lamp strip is provided with a plurality of constant voltage lamp strips, and the lengths of the constant voltage lamp strips are different.
Preferably, the number of the drivers is the same as that of the constant voltage light strips, and the drivers correspond to the constant voltage light strips one by one.
Preferably, the constant current type power supply can drive any one of the constant voltage type or the constant current type lamp strip, or drive all the constant voltage type lamp strips in the load voltage range.
Preferably, when different constant current type power supplies drive the LED constant voltage lamp strips with different lengths, the maximum output current of the constant current type power supplies can be automatically adjusted according to the feedback output voltage.
Preferably, the constant voltage lamp strip includes, but is not limited to, DC12V, 18V, 24V, 36V, 42V, 48V constant voltage lamp strip.
Compared with the prior art, the invention has the following advantages:
1) the advantage that the constant-voltage dimming power supply drives the constant-voltage lamp strip to have consistent brightness is kept under the condition of long distance and high brightness, and the advantage that the constant-current dimming power supply drives the constant-current lamp strip to have good brightness consistency is also kept under the condition of low brightness.
2) The constant current type power supply can drive the constant current type lamp strip and the constant voltage type lamp strip.
3) The constant current type power supply can drive all constant voltage light strips in a load range, and the constant voltage light strips are not limited to DC12V, 24V, 36V and 48V, and can also be constant voltage light strips required by other users such as DC18V and 42V.
4) The time and labor cost for configuring the maximum output current of the constant current type power supply according to the current required by the constant voltage type lamp strip with different lengths are saved.
5) When the load is a long-distance constant-voltage lamp strip, the light is adjusted to low brightness, and the brightness consistency of each LED lamp bead on the lamp strip is good.
Drawings
Fig. 1 is a schematic diagram of a low-brightness effect of a constant-voltage power supply on-load long-distance LED constant-voltage lamp strip;
fig. 2 is a schematic diagram of a constant current type power supply loaded long-distance LED constant current lamp strip small brightness effect;
FIG. 3 is a schematic diagram of the low-brightness effect of the constant-current power supply loaded long-distance LED constant-voltage lamp strip;
FIG. 4 is a schematic diagram of a constant current power supply loaded with LED constant voltage lamp strips of different lengths, which requires that maximum output current is configured in advance;
fig. 5 is a schematic diagram of a constant current type power supply loaded with different lengths of LED constant voltage lamp strips without configuring the maximum output current in advance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
As shown in fig. 3, a constant voltage lamp strip driving device based on a constant current type power supply with configurable output current includes a constant current type power supply, a driver and a lamp strip, wherein the constant current type power supply is connected with the lamp strip through the driver, and the lamp strip is a constant voltage lamp strip or a constant current lamp strip; the device adopts the combination of a constant current type dimming power supply and a constant voltage type lamp strip, and can obtain good dimming effect at high and low brightness.
The driver is a configurable driver. The driver may be configured as a constant current type driver or a constant voltage type driver. The driver is provided with a voltage configuration circuit for the constant voltage lamp strip, and is used for configuring the voltage function of the constant voltage type lamp when the constant voltage lamp strip is selected to be driven.
The driver is provided with a feedback voltage acquisition circuit and an output current regulating circuit and is used for automatically regulating the maximum output current according to the feedback voltage when the constant voltage lamp strip is driven, so that the output load voltage and the set constant voltage lamp strip are always within a set error range.
The constant voltage lamp area be equipped with a plurality ofly, and length is different. The drivers are the same as the constant voltage lamp strips in number and are in one-to-one correspondence. The constant current type power supply can drive any one of the constant voltage type or the constant current type lamp strips or drive all the constant voltage lamp strips within the load voltage range. When different constant current type power supplies drive LED constant voltage lamp belts with different lengths, the inside of the constant current type power supply can automatically adjust the maximum output current according to the feedback output voltage. The constant voltage lamp strip includes, but is not limited to, DC12V, 18V, 24V, 36V, 42V, 48V constant voltage lamp strips.
From the above, there are two features:
1) and when the brightness is high, the current consistency of the long-distance lamp strip driven by the constant-voltage power supply is good.
2) And when the brightness is low, the constant current type power supply drives the long-distance lamp strip to have good brightness consistency.
The invention adopts the combination of the constant current type dimming power supply and the constant voltage type lamp strip, fully exerts the respective advantages and can obtain better dimming effect at high and low brightness. However, when the constant current type power supply is used to drive the constant voltage type light strips, the current required by each light strip needs to be known in advance, and the maximum output current output by the corresponding constant current type power supply is configured according to the required current, as shown in fig. 4. So in a constant current power supply there is added:
1) the configuration function of driving the constant-current type or constant-voltage type lamp strip;
2) the voltage function of configuring a constant voltage type lamp when the constant voltage type lamp strip is selected to be driven is increased;
3) when the constant voltage type lamp strip is additionally driven, the function of automatically adjusting the maximum output current according to the feedback voltage is added, so that the output load voltage is always within the error range of +/-0.2V from the set constant voltage lamp strip voltage;
4) when testing out lamp area voltage in 3, can record the electric current when this to use this as the benchmark to adjust luminance.
By adding the functions in the constant current type power supply, the constant current type power supply can drive any one of the constant voltage type or the constant current type lamp strip and can also drive all the constant voltage lamp strips within the load voltage range. When different constant current type power supplies drive the LED constant voltage lamp strips with different lengths, the specific current required by each LED constant voltage lamp strip does not need to be known in advance, the maximum output current can be automatically adjusted in the constant current type power supply according to the feedback output voltage as long as the current is within the output current range of the constant current type power supply, the measurement of the current required by the LED constant voltage lamp strips with different lengths and the time and labor cost for configuring different maximum output currents for the constant current type power supply are saved, and the method is shown in figure 5.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A constant voltage lamp strip driving device based on a constant current type power supply with configurable output current is characterized by comprising a constant current type power supply, a driver and a lamp strip, wherein the constant current type power supply is connected with the lamp strip through the driver, and the lamp strip is a constant voltage lamp strip or a constant current lamp strip;
the device adopts the combination of a constant current type dimming power supply and a constant voltage type lamp strip, and can obtain good dimming effect at high and low brightness.
2. The constant voltage light strip driving device based on the constant current type power supply with configurable output current as claimed in claim 1, wherein the driver is a configurable driver.
3. The constant voltage lamp strip driving device based on the constant current type power supply with configurable output current as claimed in claim 2, wherein the driver can be configured as a constant current type driver or a constant voltage type driver.
4. The device as claimed in claim 1, wherein the driver comprises a voltage configuration circuit for the constant voltage strip, for configuring the voltage function of the constant voltage lamp when the constant voltage strip is selected to be driven.
5. The device as claimed in claim 1, wherein the driver comprises a feedback voltage acquisition circuit and an output current adjustment circuit, for automatically adjusting the maximum output current according to the feedback voltage when driving the constant voltage strip, so that the output load voltage is always within a predetermined error range with the set constant voltage strip.
6. The constant voltage strip driving device based on the constant current type power supply with configurable output current as claimed in claim 1, wherein the constant voltage strip is provided in plurality and has different lengths.
7. The constant voltage strip driver apparatus based on a constant current power supply with configurable output current as claimed in claim 6, wherein the number of the drivers is the same as that of the constant voltage strips, and the drivers correspond to the constant voltage strips one by one.
8. The device as claimed in claim 1, wherein the constant current type power supply can drive any one of the constant voltage type or the constant current type light strip, or drive all the constant voltage type light strips within the load voltage range.
9. The constant voltage lamp strip driving device based on the constant current type power supply with configurable output current as claimed in claim 1, wherein when different constant current type power supplies drive different lengths of LED constant voltage lamp strips, the maximum output current of the constant current type power supply is automatically adjusted according to the feedback output voltage.
10. The constant voltage lamp strip driving device based on the constant current type power supply with configurable output current as claimed in claim 1, wherein the constant voltage lamp strip includes but is not limited to DC12V, 18V, 24V, 36V, 42V, 48V constant voltage lamp strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010763433.8A CN114071834A (en) | 2020-07-31 | 2020-07-31 | Constant voltage lamp strip driving device based on configurable output current constant current type power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010763433.8A CN114071834A (en) | 2020-07-31 | 2020-07-31 | Constant voltage lamp strip driving device based on configurable output current constant current type power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114071834A true CN114071834A (en) | 2022-02-18 |
Family
ID=80227938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010763433.8A Pending CN114071834A (en) | 2020-07-31 | 2020-07-31 | Constant voltage lamp strip driving device based on configurable output current constant current type power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114071834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115633434A (en) * | 2022-10-08 | 2023-01-20 | 深圳市晟瑞科技有限公司 | Dimming current adjusting method, system, device, storage medium and dimming power supply |
| WO2024073895A1 (en) * | 2022-10-08 | 2024-04-11 | 深圳市晟瑞科技有限公司 | Dimming current adjustment method, system and apparatus, and storage medium and dimming power source |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101278540B1 (en) * | 2012-08-20 | 2013-06-25 | 주식회사 베스트디지탈 | Hybrid dimming control system for led lamp which supports smps of constant-current and constant-voltage type and method thereof |
| CN204879626U (en) * | 2015-08-12 | 2015-12-16 | 深圳市天钜光电科技有限公司 | LED constant current lamp area |
| CN205356741U (en) * | 2015-12-31 | 2016-06-29 | 深圳Tcl数字技术有限公司 | Multichannel constant -current drive circuit and TV set |
| CN106652923A (en) * | 2017-01-22 | 2017-05-10 | 中国电子科技集团公司第五十五研究所 | High-stability and wide-range brightness adjusting method for LED backlight, and high-stability and wide-range LED backlight driving circuit |
| CN109982485A (en) * | 2019-04-16 | 2019-07-05 | 深圳市豪恩智能物联股份有限公司 | Constant current output adjusts circuit |
| CN212519505U (en) * | 2020-07-31 | 2021-02-09 | 鸣志电器(太仓)有限公司 | Constant voltage lamp strip driving device based on configurable output current constant current type power supply |
-
2020
- 2020-07-31 CN CN202010763433.8A patent/CN114071834A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101278540B1 (en) * | 2012-08-20 | 2013-06-25 | 주식회사 베스트디지탈 | Hybrid dimming control system for led lamp which supports smps of constant-current and constant-voltage type and method thereof |
| CN204879626U (en) * | 2015-08-12 | 2015-12-16 | 深圳市天钜光电科技有限公司 | LED constant current lamp area |
| CN205356741U (en) * | 2015-12-31 | 2016-06-29 | 深圳Tcl数字技术有限公司 | Multichannel constant -current drive circuit and TV set |
| CN106652923A (en) * | 2017-01-22 | 2017-05-10 | 中国电子科技集团公司第五十五研究所 | High-stability and wide-range brightness adjusting method for LED backlight, and high-stability and wide-range LED backlight driving circuit |
| CN109982485A (en) * | 2019-04-16 | 2019-07-05 | 深圳市豪恩智能物联股份有限公司 | Constant current output adjusts circuit |
| CN212519505U (en) * | 2020-07-31 | 2021-02-09 | 鸣志电器(太仓)有限公司 | Constant voltage lamp strip driving device based on configurable output current constant current type power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115633434A (en) * | 2022-10-08 | 2023-01-20 | 深圳市晟瑞科技有限公司 | Dimming current adjusting method, system, device, storage medium and dimming power supply |
| WO2024073895A1 (en) * | 2022-10-08 | 2024-04-11 | 深圳市晟瑞科技有限公司 | Dimming current adjustment method, system and apparatus, and storage medium and dimming power source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9560704B2 (en) | LED driving device and LED lighting apparatus | |
| US10129946B2 (en) | High-efficiency, wide dynamic range dimming for solid-state lighting | |
| US6864641B2 (en) | Method and apparatus for controlling light emitting diodes | |
| TWI423731B (en) | Light-emitting diode (led) current balance circuit | |
| CN101917809B (en) | Driver for driving a plurality of light emitting elements, driving method, and display device | |
| CN103037597B (en) | Multi-channel LED (Light Emitting Diode) constant current control circuit and LED light source control system | |
| CN114071834A (en) | Constant voltage lamp strip driving device based on configurable output current constant current type power supply | |
| CN212519505U (en) | Constant voltage lamp strip driving device based on configurable output current constant current type power supply | |
| KR20040084729A (en) | Illumination apparatus, and an illumination head and power source device used therefore | |
| CN201708995U (en) | LED constant current drive circuit and output voltage adjustable circuit | |
| TWI519204B (en) | Light-emitting diode lighting device having multiple driving stages | |
| CN110430634B (en) | LED constant current drive capable of adjusting output current | |
| CN102404921A (en) | Output current adjustable intelligent constant current power supply device | |
| KR101864237B1 (en) | Light-emitting diode lighting device having multiple driving stages | |
| CN202617454U (en) | Light-emitting diode (LED) driving circuit with light dimming function | |
| CN209593844U (en) | Emergent identification lamp and lamps and lanterns management system | |
| CN110062506B (en) | Solar simulation device and driving method thereof | |
| CN210247101U (en) | Sunshine simulator | |
| US20240147588A1 (en) | Constant Voltage PWM to Constant Current PWM LED Lighting System with Thermal and Current Feedback | |
| KR20190045818A (en) | Light-emitting diode lighting device | |
| CN104125675A (en) | LED lamp dimming circuit | |
| CN213073170U (en) | LED dimming circuit | |
| CN202353883U (en) | Intelligent constant current power supply device with adjustable output current | |
| US9642198B2 (en) | Three-way OMNI-directional LED lamp driver circuit | |
| US11178739B2 (en) | Constant current source driving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |