CN203327322U - Power self-compensation device of LED light fixture - Google Patents
Power self-compensation device of LED light fixture Download PDFInfo
- Publication number
- CN203327322U CN203327322U CN2013203861291U CN201320386129U CN203327322U CN 203327322 U CN203327322 U CN 203327322U CN 2013203861291 U CN2013203861291 U CN 2013203861291U CN 201320386129 U CN201320386129 U CN 201320386129U CN 203327322 U CN203327322 U CN 203327322U
- Authority
- CN
- China
- Prior art keywords
- led light
- power
- sampling circuit
- mcu controller
- light fixture
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a power self-compensation device of a LED light fixture. The device comprises a power supply, a constant current driver, a LED light source module and a power compensation control module. The power compensation control module comprises a voltage sampling circuit, a current sampling circuit, a MCU controller, nixie tube display and a control circuit. The MCU controller compares a detected current power value with a set power value and outputs a PWM signal so as to adjust output power of the LED light fixture in real time. Stability of the output power of the LED light fixture is guaranteed. The device of the utility model is suitable for various kinds of LED electric supply light fixtures and solar energy light fixtures.
Description
Technical field
The utility model relates to the illumination control field, is specifically related to a kind of LED lamp power self-compensating device.
Background technology
LED is as a kind of novel lighting system, have the life-span long, consume energy low, volume is little, high brightness, controls the advantages such as flexible, belongs to typical green illumination light source, its application prospect is more and more extensive.Yet LED is very responsive to electric current, the drive current of most LED is designed to constant-current source.Yet, when ambient temperature descends, will cause the voltage of LED light source module to rise, and the output current of constant-flow driver remains unchanged, and will cause the light fixture power consumption to increase.Otherwise, cause the voltage drop of LED light source module, and the output current of constant-flow driver remains unchanged, will cause the light fixture power consumption not enough and can't work.Therefore, this mode can not guarantee with the variation of LED light fixture input voltage the stability of LED lamp power.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the deficiency of above-mentioned technology, and a kind of LED lamp power self-compensating device is provided, and guarantees the stable of LED light fixture power output, and the LED light fixture is worked under varying environment.
In order to solve technical problem of the present utility model, the utility model is achieved through the following technical solutions: a kind of LED lamp power self-compensating device, comprise power supply, constant-flow driver, LED light source module, power back-off control module, it is characterized in that: described power back-off control module comprises voltage sampling circuit, current sampling circuit, MCU controller, charactron, control circuit; Described LED light source module input access constant-flow driver, output is connected with current sampling circuit, voltage sampling circuit; Described MCU controller input access current sampling circuit, voltage sampling circuit, output is connected with constant-flow driver, charactron, control circuit respectively; Described constant-flow driver input access power supply.
Described power compensating circuit is to the real-time dynamic compensation of power output.
Set a reference power value in described power compensating circuit.
Described current sampling circuit detects the drive current of LED light source module in real time, then current value is sent to the MCU controller.
Described voltage sampling circuit detects the driving voltage of LED light source module in real time, then magnitude of voltage is sent to the MCU controller.
Described MCU controller is by programming using the product of detected current value and magnitude of voltage as the current power value.
Described MCU controller compares the current power value calculated with original performance number of setting.
If current performance number is less than the performance number of setting, MCU controller output pwm signal, increase the power of constant-flow driver output, until equate with the performance number of setting, thereby guarantee LED light source module power stability.
If current performance number is greater than the performance number of setting, MCU controller output pwm signal, reduce the power of constant-flow driver output, until equate with the performance number of setting, thereby guarantee LED light source module power stability.
Simultaneously; consider the protective feature of power supply; control circuit detects output current characteristic in real time; once the current value that the short circuit of LED light fixture, open circuit, overload or setting occur is greater than the situation of maximum permissible current value, control circuit can send rub-out signal to the MCU controller rapidly; the MCU controller can cut off the power supply of LED light fixture in time, and protection LED light fixture is not damaged.
The beneficial effect that the utility model obtains is: adopt the power self-compensating device, adjust in real time the power output of LED light fixture under the high low-voltage of input, to the power output dynamic compensation, guarantee the stable of LED light fixture power output, reduce the impact of input voltage real-time change on the normal operation of LED light fixture, extended greatly the useful life of LED.
The accompanying drawing explanation
Fig. 1 is the theory diagram of a kind of LED lamp power of the utility model self-compensating device.
Specific embodiments:
Shown in accompanying drawing 1, a kind of LED lamp power self-compensating device, comprise power supply, constant-flow driver, LED light source module, power back-off control module, it is characterized in that: described power back-off control module comprises voltage sampling circuit, current sampling circuit, MCU controller, charactron, control circuit; Described LED light source module input access constant-flow driver, output is connected with current sampling circuit, voltage sampling circuit; Described MCU controller input access current sampling circuit, voltage sampling circuit, output is connected with constant-flow driver, charactron, control circuit respectively; Described constant-flow driver input access power supply.
Described power compensating circuit is to the real-time dynamic compensation of power output.
Set a reference power value in described power compensating circuit.
Described current sampling circuit detects the drive current of LED light source module in real time, then current value is sent to the MCU controller.
Described voltage sampling circuit detects the driving voltage of LED light source module in real time, then magnitude of voltage is sent to the MCU controller.
Described MCU controller is by programming using the product of detected current value and magnitude of voltage as the current power value.
Described MCU controller compares the current power value calculated with original performance number of setting.
If current performance number is less than the performance number of setting, MCU controller output pwm signal, increase the power of constant-flow driver output, until equate with the performance number of setting, thereby guarantee LED light source module power stability.
If current performance number is greater than the performance number of setting, MCU controller output pwm signal, reduce the power of constant-flow driver output, until equate with the performance number of setting, thereby guarantee LED light source module power stability.
Simultaneously; consider the protective feature of power supply; control circuit detects output current characteristic in real time; once the current value that the short circuit of LED light fixture, open circuit, overload or setting occur is greater than the situation of maximum permissible current value, control circuit can send rub-out signal to the MCU controller rapidly; the MCU controller can cut off the power supply of LED light fixture in time, and protection LED light fixture is not damaged.
What more than enumerate is only one of specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many shapes that similarly change can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think the claimed scope of the utility model.
Claims (2)
1. a LED lamp power self-compensating device, comprise power supply, constant-flow driver, LED light source module, power back-off control module, it is characterized in that: described power back-off control module comprises voltage sampling circuit, current sampling circuit, MCU controller, charactron, control circuit; Described LED light source module input access constant-flow driver, output is connected with current sampling circuit, voltage sampling circuit; Described MCU controller input access current sampling circuit, voltage sampling circuit, output is connected with constant-flow driver, charactron, control circuit respectively; Described constant-flow driver input access power supply.
2. LED lamp power self-compensating device as claimed in claim 1, it is characterized in that: described control circuit detects output current characteristic in real time, once the current value that the short circuit of LED light fixture, open circuit, overload or setting occur is greater than the situation of maximum permissible current value, control circuit can send rub-out signal to the MCU controller rapidly, the MCU controller can cut off the power supply of LED light fixture in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203861291U CN203327322U (en) | 2013-07-02 | 2013-07-02 | Power self-compensation device of LED light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203861291U CN203327322U (en) | 2013-07-02 | 2013-07-02 | Power self-compensation device of LED light fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203327322U true CN203327322U (en) | 2013-12-04 |
Family
ID=49666611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203861291U Expired - Lifetime CN203327322U (en) | 2013-07-02 | 2013-07-02 | Power self-compensation device of LED light fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203327322U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109413791A (en) * | 2017-08-18 | 2019-03-01 | 明纬(广州)电子有限公司 | Feedback circuit |
| CN111083848A (en) * | 2019-12-31 | 2020-04-28 | 华域视觉科技(上海)有限公司 | Overload protection method, device, equipment and medium for automobile LED lamp |
| CN111736089A (en) * | 2019-03-20 | 2020-10-02 | 深圳市嘉力电气技术有限公司 | UV-LED lamp bead energy compensation and lamp bead fault detection device and method |
| CN114170978A (en) * | 2021-12-15 | 2022-03-11 | 北京芯格诺微电子有限公司 | Backlight LED matrix driving device for display and fault detection method |
-
2013
- 2013-07-02 CN CN2013203861291U patent/CN203327322U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109413791A (en) * | 2017-08-18 | 2019-03-01 | 明纬(广州)电子有限公司 | Feedback circuit |
| CN109413791B (en) * | 2017-08-18 | 2020-11-24 | 明纬(广州)电子有限公司 | Feedback circuit |
| CN111736089A (en) * | 2019-03-20 | 2020-10-02 | 深圳市嘉力电气技术有限公司 | UV-LED lamp bead energy compensation and lamp bead fault detection device and method |
| CN111083848A (en) * | 2019-12-31 | 2020-04-28 | 华域视觉科技(上海)有限公司 | Overload protection method, device, equipment and medium for automobile LED lamp |
| CN114170978A (en) * | 2021-12-15 | 2022-03-11 | 北京芯格诺微电子有限公司 | Backlight LED matrix driving device for display and fault detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203327322U (en) | Power self-compensation device of LED light fixture | |
| CN202406331U (en) | Variable-frequency voltage regulating driver dedicated for organic electroluminescent membrane | |
| CN204901396U (en) | An intelligent illuminating lamp | |
| CN202077247U (en) | Illumination drive power supply for Light-emitting diode (LED) streetlamp | |
| CN203416478U (en) | Intelligent system for controlling luminance of LED lamp | |
| CN203162644U (en) | LED intelligent lighting device | |
| CN103152939A (en) | Four-in-one light-dimming circuit of light-emitting diode (LED) power source | |
| CN203504851U (en) | Intelligent LED lighting control system | |
| CN203327321U (en) | LED light-fixture environment-temperature self-compensation device | |
| CN203086806U (en) | A light adjusting circuit of a fluorescent lamp | |
| CN205179459U (en) | Unmanned on duty's intelligent lighting control system | |
| CN203136259U (en) | LED power supply four-in-one light modulation circuit | |
| CN105263243A (en) | Lamp adaptive to environment illumination | |
| CN201467511U (en) | Dynatron effect-based light emitting diode illumination driving device | |
| CN203120232U (en) | Light-operated adjustable energy-efficient LED | |
| CN204810634U (en) | LED self -adaptation classroom lamp of adjusting luminance | |
| CN205179452U (en) | High bright lamp of single -chip LED | |
| CN203181300U (en) | LED intelligent control lamp | |
| CN105898916B (en) | A kind of method of light-emitting device and its coordinate plant growth | |
| CN204498414U (en) | Adjusting control circuit on LED line | |
| CN110809344A (en) | Intelligent street lamp controller | |
| CN203072219U (en) | LED driving power supply | |
| CN203015238U (en) | Off-line LED driving power supply | |
| CN103338545A (en) | Fluorescent lamp dimming circuit and operating method thereof | |
| CN201893969U (en) | Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 689, aixihu North Road, high tech Zone, Nanchang City, Jiangxi Province Patentee after: China energy saving Jinghe Technology Co.,Ltd. Address before: No. 689, aixihu North Road, high tech Zone, Nanchang City, Jiangxi Province Patentee before: CECEP LATTICELIGHTING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |