CN203554741U - Led light modulation controller - Google Patents
Led light modulation controller Download PDFInfo
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- CN203554741U CN203554741U CN201320612658.9U CN201320612658U CN203554741U CN 203554741 U CN203554741 U CN 203554741U CN 201320612658 U CN201320612658 U CN 201320612658U CN 203554741 U CN203554741 U CN 203554741U
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- led light
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- light source
- light modulation
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Abstract
The utility model discloses an LED light modulation controller including a light modulation drive circuit connected with an LED light source. The light modulation drive circuit includes a rectification filtering module and a constant current control module which are sequentially connected; and the light modulation drive circuit further includes a feedback circuit, a light modulation control module, and an output control circuit. The feedback circuit is used for sensing a forward current passing through the LED light source, and producing a current feedback signal according to the sensed forward current; the light modulation control module is electrically coupled to the constant current control module, and generates a light modulation control signal according to the current feedback signal; and the output control circuit is used for responding the light modulation control signal to control the light intensity of the LED light source, wherein the constant current control module is connected with the output control circuit, and an output terminal of the output control module is connected with the LED light source. By adopting the light modulation controller, the light intensity of a light source can be effectively controlled, abrupt changes of the light intensity of the light source can be well avoided, and the light intensity of the light source can be increased gradually, so as to provided more comfortable user experience for users; and the LED light modulation controller is stable in control and high in light modulation precision.
Description
Technical field
The utility model relates to intelligent lighting field, specifically refers to a kind of LED light adjusting controller.
Background technology
Traditional illumination adopts Halogen lamp LED or tungsten lamp etc. as lighting source always, the life-span that Halogen lamp LED or tungsten lamp are used is shorter, in when work, not only power consumption is large but also distribute a large amount of heat energy, not only reduced the useful life of light fixture, and affect user's observing effect, simultaneously because lighting source does not have brightness control function, in brightness cannot adjustment situation, everyone eyes are different to the sensitiveness of brightness.Therefore in use, background light source cannot, with everyone eyes to the matching of brightness, directly have influence on its observing effect.
Along with the appearance of low-power consumption energy-saving LED, it is energy-conservation that LED has low-voltage, and spectrum is good, colour purity, light efficiency are high, little to photographed object injury, and these plurality of advantages of LED make it obtain positive popularization, in commercialization illumination, have started progressively to replace common light source now.Mostly the driving of LED lamp (such as guardrail, Lamp cup, projecting lamp) is to adopt resistance-capacitance depressurization, then add a voltage stabilizing didoe voltage stabilizing, to LED, power, the mode simple cheap of driving LED like this, but there is lower column defects: on dropping resistor, can consume a large amount of electric energy, even likely exceed the electric energy that LED consumes, cause efficiency low; When electric current is larger, require decompression capacitor larger, so the electric energy of consumption on dropping resistor is also just larger, cause providing large driven current density; Next is the ability extreme difference of burning voltage, cannot guarantee to be no more than its normal job requirement by the electric current of LED, and during deisgn product, the general reduction LED both end voltage that adopts supplies electric drive, like this to reduce LED brightness as cost.
Separately having some drive schemes is to adopt the voltage or the electric current that change LED bis-ends to reach light modulation object, namely simulate light modulation, but from the characteristics of luminescence analysis of LED, the electric current and voltage of LED is not linear relationship with brightness, by adjusting voltage and current, be what can not realize by 0-100% gamut and average brightness regulation, and often change electric current and the voltage of LED, the LED life-span is had a great impact.Also some scheme adopts PWM light modulation, but because LED driving has longer delay to the response time of PWM dim signal, causes light modulation precision low, thereby do not reach best dimming effect.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of efficient, the LED light adjusting controller that stable, light modulation precision is high is provided.
The purpose of this utility model is achieved through the following technical solutions:
LED light adjusting controller, comprise the dimming driving circuit being connected with LED light source, described dimming driving circuit comprises the rectification filtering module, the constant-current control module that connect successively, dimming driving circuit also comprises: for senses flow, cross the forward current of LED light source, and according to the feedback circuit of the forward current generation current feedback signal of institute's sensing; Be electrically coupled to constant-current control module, according to current feedback signal, produce the dimming controlling module of dimming control signal; For the output control module with the light intensity of control LED light source in response to dimming control signal, described constant-current control module is connected with output control module, and the output of described output control module is connected with LED light source.
Concrete, described dimming controlling module comprises:
Trigger monitoring means, for receiving described current feedback signal and producing and drive signal according to the action of mains switch; And the dimmer being connected with described triggering monitoring means, for producing dim signal to regulate LED light intensity under pulse light modulation pattern according to described driving signal.
Preferably, described light adjusting controller also comprises: by the counter of described drive; And the digital to analog converter being connected with described counter, for producing described dim signal according to the count value of described counter.
Preferably, between described output control module and LED light source, be also in series with sample resistance.Multi-way LED lamp is connected on output control module after connecting with sample resistance, and MCU control unit, by obtaining current signal analysis circuit situation, has fault automatically to reduce output, and protection LED lamp, prevents the damage of LED lamp.
Preferably, on described output control module, be also connected with the temperature sensor changing for temperature sensor.Utilize temperature sensor, detected temperatures, exceedes temperature and reduces power, realizes intelligent dimming, has increased the reliability of light fixture simultaneously, has improved the useful life of light fixture, has also reduced cost.
Described constant-current control module comprises integrated chip U1 and field effect transistor Q1, described U1PWMD end connects dimming controlling module, VIN end connects rectification filtering module by a voltage stabilizing circuit, GD end connects field effect transistor Q1 grid by resistance, Q1 source electrode connects U1CS end, Q1 drain electrode connects inductance L 6, and inductance L 6 other ends connect the negative input of output control module.
The utility model has the following advantages and beneficial effect compared to existing technology:
The utility model light adjusting controller adopts constant current drive mode, feedback circuit in real time to emitting led light source forward current carry out sensing, and by dimming controlling module and output control module, the light intensity of LED light source is controlled, the brightness that can effectively control light source changes and well avoids light-source brightness to suddenly change, and the brightness of light source is increased gradually, thereby for user provides more comfortable user, experience, control is stable, light modulation precision is high.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model embodiment;
Fig. 2 is the present embodiment dimming controlling module circuit theory schematic diagram;
Fig. 3 is the present embodiment constant-current control module embodiment circuit theory schematic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of LED light adjusting controller, comprise the dimming driving circuit being connected with LED light source 3, described dimming driving circuit comprises the rectification filtering module 1, the constant-current control module 2 that connect successively, dimming driving circuit also comprises: for senses flow, cross the forward current of LED light source 3, and according to the feedback circuit 4 of the forward current generation current feedback signal of institute's sensing; Be electrically coupled to constant-current control module 2, according to current feedback signal, produce the dimming controlling module 5 of dimming control signal; For the output control module 6 with the light intensity of control LED light source in response to dimming control signal, described constant-current control module 2 is connected with output control module 6, and the output of described output control module 6 is connected with LED light source 3.The utility model light adjusting controller adopts constant current drive mode, feedback circuit in real time to emitting led light source forward current carry out sensing, and by dimming controlling module and output control module, the light intensity of LED light source is controlled, the brightness that can effectively control light source changes and well avoids light-source brightness to suddenly change, and the brightness of light source is increased gradually, thereby for user provides more comfortable user, experience, control is stable, light modulation precision is high.
As shown in Figure 2, described dimming controlling module 5 comprises:
Trigger monitoring means 501, for receiving described current feedback signal and producing and drive signal according to the action of mains switch; And the dimmer 502 being connected with described triggering monitoring means 501, for producing dim signal to regulate the light intensity of LED light source under pulse light modulation pattern according to described driving signal.In one embodiment, mains switch can be the mains switch being placed on metope.By the handle in diverter switch, user can control the conducting state of mains switch.Described light adjusting controller 5 also comprises: by the counter 503 of described drive, for the action to mains switch, count; And the digital to analog converter 504 being connected with described counter 503, for producing described dim signal according to the count value of described counter 503.
During work, dimming controlling module 5 comprises triggering monitoring means 501, dimmer 502 and pulse width modulating signal generator 505.Trigger monitoring means 502 and be connected to ground by Zener diode ZD1.Trigger monitoring means 501 by port CLK receiving key monitor signal, the action of this switch monitor signal indication external power switch.When the action of external power switch is monitored to, triggers monitoring means 501 and produce driving signal with actuation counter 503.Dimmer 502 produces reference signal REF, regulates the electric energy of LED light source to simulate the mode of light modulation.Light adjusting controller 5 also comprises startup and low pressure locking (UVL) circuit 506 of being connected with port VDD, for optionally start one or more parts of light adjusting controller 5 inside according to different electric energy situations.
Between described output control module 6 and LED light source 3, be also in series with sample resistance.Multi-way LED lamp is connected on output control module after connecting with sample resistance, and MCU control unit, by obtaining current signal analysis circuit situation, has fault automatically to reduce output, and protection LED lamp, prevents the damage of LED lamp.
On described output control module 6, be also connected with the temperature sensor changing for temperature sensor.Utilize temperature sensor, detected temperatures, exceedes temperature and reduces power, realizes intelligent dimming, has increased the reliability of light fixture simultaneously, has improved the useful life of light fixture, has also reduced cost.
As shown in Figure 3, described constant-current control module 2 comprises integrated chip U1 and field effect transistor Q1, described U1PWMD end connects dimming controlling module 5, VIN end connects rectification filtering module 1 by a voltage stabilizing circuit, GD end connects field effect transistor Q1 grid by resistance, Q1 source electrode connects U1CS end, and Q1 drain electrode connects inductance L 6, and inductance L 6 other ends connect the negative input of output control module.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (6)
1.LED light adjusting controller, comprise the dimming driving circuit being connected with LED light source, described dimming driving circuit comprises the rectification filtering module, the constant-current control module that connect successively, it is characterized in that, dimming driving circuit also comprises: for senses flow, cross the forward current of LED light source, and according to the feedback circuit of the forward current generation current feedback signal of institute's sensing; Be electrically coupled to constant-current control module, according to current feedback signal, produce the dimming controlling module of dimming control signal; For the output control module with the light intensity of control LED light source in response to dimming control signal, described constant-current control module is connected with output control module, and the output of described output control module is connected with LED light source.
2. LED light adjusting controller according to claim 1, is characterized in that, described dimming controlling module comprises:
Trigger monitoring means, for receiving described current feedback signal and producing and drive signal according to the action of mains switch; And the dimmer being connected with described triggering monitoring means, for producing dim signal to regulate LED light intensity under pulse light modulation pattern according to described driving signal.
3. LED light adjusting controller according to claim 2, is characterized in that, described dimming controlling module also comprises: by the counter of described drive; And the digital to analog converter being connected with described counter, for producing described dim signal according to the count value of described counter.
4. LED light adjusting controller according to claim 1, is characterized in that, is also in series with sample resistance between described output control module and LED light source.
5. LED light adjusting controller according to claim 1, is characterized in that, is also connected with the temperature sensor changing for temperature sensor on described output control module.
6. according to LED light adjusting controller described in claim 1 to 5 any one, it is characterized in that, described constant-current control module comprises integrated chip U1 and field effect transistor Q1, the PWMD end of described U1 connects dimming controlling module, VIN end connects rectification filtering module by a voltage stabilizing circuit, and GD end connects field effect transistor Q1 grid by resistance, and Q1 source electrode connects U1CS end, Q1 drain electrode connects inductance L 6, and inductance L 6 other ends connect the negative input of output control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612658.9U CN203554741U (en) | 2013-09-30 | 2013-09-30 | Led light modulation controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612658.9U CN203554741U (en) | 2013-09-30 | 2013-09-30 | Led light modulation controller |
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| CN203554741U true CN203554741U (en) | 2014-04-16 |
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| CN201320612658.9U Expired - Fee Related CN203554741U (en) | 2013-09-30 | 2013-09-30 | Led light modulation controller |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994658A (en) * | 2015-07-20 | 2015-10-21 | 苏州新里程电控系统有限公司 | An elevator LED lamp panel constant current control circuit |
| CN105979628A (en) * | 2016-05-24 | 2016-09-28 | 江苏天楹之光光电科技有限公司 | LED lamp with characteristic of light modulation and light modulation method |
| CN108626639A (en) * | 2017-03-24 | 2018-10-09 | 松下知识产权经营株式会社 | Lighting device and lighting system |
| CN111721708A (en) * | 2020-01-22 | 2020-09-29 | 中国科学院上海微系统与信息技术研究所 | Device and method for regulating and controlling sensitivity of silicon nanowire sensor by light |
| WO2022021760A1 (en) * | 2020-07-28 | 2022-02-03 | 晨辉光宝科技股份有限公司 | Dimmable illumination device |
| CN114071828A (en) * | 2021-12-22 | 2022-02-18 | 浙江邦捷科技股份有限公司 | LED intelligent lamp strip controller |
| US11388793B2 (en) * | 2020-07-28 | 2022-07-12 | Ch Lighting Technology Co., Ltd. | Dimmable lighting apparatus |
-
2013
- 2013-09-30 CN CN201320612658.9U patent/CN203554741U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994658A (en) * | 2015-07-20 | 2015-10-21 | 苏州新里程电控系统有限公司 | An elevator LED lamp panel constant current control circuit |
| CN105979628A (en) * | 2016-05-24 | 2016-09-28 | 江苏天楹之光光电科技有限公司 | LED lamp with characteristic of light modulation and light modulation method |
| CN108626639A (en) * | 2017-03-24 | 2018-10-09 | 松下知识产权经营株式会社 | Lighting device and lighting system |
| CN108626639B (en) * | 2017-03-24 | 2022-10-21 | 松下知识产权经营株式会社 | Lighting device and lighting system |
| CN111721708A (en) * | 2020-01-22 | 2020-09-29 | 中国科学院上海微系统与信息技术研究所 | Device and method for regulating and controlling sensitivity of silicon nanowire sensor by light |
| CN111721708B (en) * | 2020-01-22 | 2021-06-22 | 中国科学院上海微系统与信息技术研究所 | Device and method for regulating and controlling sensitivity of silicon nanowire sensor by light |
| WO2022021760A1 (en) * | 2020-07-28 | 2022-02-03 | 晨辉光宝科技股份有限公司 | Dimmable illumination device |
| US11388793B2 (en) * | 2020-07-28 | 2022-07-12 | Ch Lighting Technology Co., Ltd. | Dimmable lighting apparatus |
| CN114071828A (en) * | 2021-12-22 | 2022-02-18 | 浙江邦捷科技股份有限公司 | LED intelligent lamp strip controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20160930 |