CN105208742A - AC LED light adjustment method and inductive light adjustment controller - Google Patents
AC LED light adjustment method and inductive light adjustment controller Download PDFInfo
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- CN105208742A CN105208742A CN201510698077.5A CN201510698077A CN105208742A CN 105208742 A CN105208742 A CN 105208742A CN 201510698077 A CN201510698077 A CN 201510698077A CN 105208742 A CN105208742 A CN 105208742A
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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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Abstract
The invention provides an AC LED light adjustment method which is characterized in that PWM signals are adopted to directly modulate the AC supply voltage for working of an AC LED, the AC voltage envelope wave form and the AC voltage peak value are kept constant, the AC voltage effective value is adjusted by PWM duty cycle, the light adjustment range of the AC LED is enlarged to be 1-100%, and the light adjustment is stable. The invention further provides an inductive light adjustment controller for realizing the AC LED light adjustment method. The adopted method or inductive light adjustment controller provided by the invention can be widely applied to AC LED lamps, light adjustment and inductive intelligent automatic light adjustment can be realized, the purpose of dynamic secondary energy conservation is achieved, and the energy conservation effect is obvious.
Description
Technical field
The present invention relates to Led lighting field, particularly a kind of ACLED light-dimming method and induction light adjusting controller.
Background technology
At present, dimmer is on the market divided into forward position phase-cut dimming and rear along phase-cut dimming two kinds of method design, along with the technical maturity of ACLED, uses more and more extensive.Relative to low-voltage LED, high pressure ACLED does not need to drive, and cost reduces a lot relatively, and be not much very high place to lighting requirement, ACLED has very high advantage.
There is incompatible phenomenon in the lamp light-regulating of current dimmer to ACLED, because ACLED required voltage is high, when dimmer cut to certain angle, ACLED will knock out, and dimming scope is narrow and glimmer.If during ACLED employing sectional power supply mode, more outstanding, being transferred to a half at dimmer will knock out, and does not have dimming effect completely.In ACLED application, increasing occasion needs dimmer application, so be necessary to develop a kind of dimming arrangement being applied to ACLED.
Summary of the invention
For above defect, the object of the invention is the dimming arrangement how realizing ACLED.
In order to overcome the above problems, the present invention proposes the light-dimming method of a kind of ACLED, it is characterized in that adopting pwm signal directly to carry out chopping modulation to the AC voltage of ACLED work, keep AC voltage envelope waveform constant, AC voltage peak is constant, AC voltage effective value adjusts by the duty ratio of PWM, realize ACLED from 1 ?100% scope light modulation.
Additionally provide a kind of induction light adjusting controller realizing ACLED light-dimming method, comprise load connection terminal, accessory power supply, human motion inductive module, light modulation interface and light modulation pwm signal and produce module, characterized by further comprising rectification circuit and realize the chopping modulation device that pwm signal modulates AC voltage, described load connection terminal inputs brachium pontis be connected with one of the full-wave rectification bridge of rectification circuit after connecting with any line of ac power cable, and another input brachium pontis of the full-wave rectification bridge of rectification circuit is connected with another power line of ac power cable; Connect with the output of rectification circuit in the main channel of chopping modulation device, light modulation pwm signal produces the output of module and is connected with the adjustment signal input part of chopping modulation device.
The described induction light adjusting controller realizing ACLED light-dimming method, is characterized in that chopping modulation device is the semiconductor device that can be turned off by external control signal.
The described induction light adjusting controller realizing ACLED light-dimming method, is characterized in that described semiconductor device is MOSFET, IGBT or BJT.
The described induction light adjusting controller realizing ACLED light-dimming method, it is characterized in that light modulation pwm signal produces module is large scale integrated circuit or microcontroller circuit.
The described induction light adjusting controller realizing ACLED light-dimming method, characterized by further comprising human motion inductive module, human motion inductive module is made up of microwave sensor and microwave signal process circuit, described microwave sensor is connected with described microwave signal process circuit, and described microwave signal process circuit produces module with described light modulation pwm signal and is connected.
The described induction light adjusting controller realizing ACLED light-dimming method, characterized by further comprising light intensity sensor and optical signal processing circuit, described light intensity sensor is connected with optical signal processing circuit, and described optical signal processing circuit produces module with described light modulation pwm signal and is connected.
The described induction light adjusting controller realizing ACLED light-dimming method, is characterized in that described light modulation interface is adjustable potentiometer, button, digital regulation resistance, toggle switch.
The described induction light adjusting controller realizing ACLED light-dimming method, it is characterized in that the pwm signal that described light modulation pwm signal generation module produces is square-wave signal, PWM frequency is higher than the frequency of AC voltage.
Adopt method provided by the invention or adopt induction light adjusting controller provided by the invention, make the dimming scope of ACLED be increased to 1%-100%, light modulation becomes soft, and stable, can be widely used in the various products needing light modulation of ACLED, energy-saving effect is remarkable.
Accompanying drawing explanation
Fig. 1 be the induction light adjusting controller of the light-dimming method of a kind of ACLED of realization realize block diagram;
The voltage oscillogram of Fig. 2 normal communication electricity;
Fig. 3 regulates voltage oscillogram during white flag lamp;
Fig. 4 regulates voltage oscillogram during ACLED.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 be the induction light adjusting controller of the light-dimming method of a kind of ACLED of realization realize block diagram, comprising: load connection terminal 1, rectification circuit 2, chopping modulation device 3, accessory power supply 4, light modulation pwm signal produces module 5, and adjustment interface 6, human motion inductive module 7 form; Wherein accessory power supply 4 provides chopping modulation device 3, and light modulation pwm signal produces module 5, adjustment interface 6, power supply needed for human motion inductive module 7.Load connection terminal 1 can the external load of external white flag lamp, ACLED or purely resistive; Chopping modulation device 3 is the semiconductor device that MOSFET, BJT, IGBT etc. can be turned off by external control signal; Light modulation pwm signal produces the microcontroller circuit that module 5 is the control chip compositions such as mcu, dsp; Adjustment interface 6 is that adjustable potentiometer, button, digital regulation resistance, toggle switch etc. can the interfaces of human-computer interaction.
AC voltage forms current circuit through the external load of load connection terminal 1 and rectification circuit 2, wherein load 1 is connected with the arbitrary power line in AC voltage, receive on an input brachium pontis of the full-bridge of rectification circuit 2 again, another input brachium pontis of the full-bridge of rectification circuit 2 is connected with another power line in AC voltage.In order to meet the requirement of certification, can seal in or be incorporated to EMC device in this connects.One end of chopping modulation device 3 is connected with the positive output end of the full-bridge of rectification circuit 2, and the other end is connected with the ground output of the full-bridge of rectification circuit 2.The output that control end produces module 5 with light modulation pwm signal is connected, and the input that human motion inductive module 7 produces module 5 with light modulation pwm signal is connected, and the input that output and the light modulation pwm signal of adjustment interface 6 produce module 5 is connected.When adjustment interface 6 adjusts to a fixed value time, light modulation pwm signal produces module 5 and becomes the pwm signal of fixed duty cycle to export according to the data transaction of adjustment interface 6, thus control chopping modulation device 3, make the full-bridge angle of flow in rectification circuit 2 according to the duty ratio conducting of PWM, load 1 light is made to lead to invariable, realize the modulation to AC signal, when human motion inductive module 7 detects that someone enters induction zone, human motion inductive module 7 exports induced signal and produces module 5 to light modulation pwm signal, light modulation pwm signal produces module 5 and produces maximum PWM duty cycle signals, thus control chopping modulation device 3, make the full-bridge angle of flow in rectification circuit 2 according to the complete conducting of the duty ratio of PWM, make load 1 entirely bright, when human motion inductive module 7 detects that people leaves induction zone, human motion inductive module 7 outputs signal light modulation pwm signal and produces module 5, light modulation pwm signal produces module 5 and becomes the pwm signal of fixed duty cycle to export according to the data transaction of adjustment interface 6, thus control chopping modulation device 3, make the full-bridge angle of flow in rectification circuit 2 according to the duty ratio conducting of PWM, load 1 light is made to lead to the output of brightness or the switching off load 1 becoming setting again, the voltage oscillogram of Fig. 2 normal communication electricity, Fig. 3 regulates voltage oscillogram during white flag lamp, waveform when external load is white flag lamp after modulation.Fig. 4 regulates voltage oscillogram during ACLED, and wherein V is the intrinsic cut-in voltage of ACLED.When the numerical value of adjustment interface 6 changes, the duty ratio of pwm signal changes, and the full-bridge angle of flow in rectification circuit 2 is changed, thus makes that external load 1 light is logical to be become large or diminish, and namely realizes external load dimming function.
Through testing the He Ne laser of PWM between 500Hz-20KHz, choice of optimal frequency is between 500-2K.
According to different application scenarioss, induction light adjusting controller can also increase light intensity sensor and optical signal processing circuit, and light intensity sensor is connected with optical signal processing circuit, and optical signal processing circuit and light modulation pwm signal produce module 5 and be connected.Automatically monitored the ambient brightness of field of illumination by light intensity sensor, automatically control pwm signal, control the brightness of external load, realize ensureing that integral illumination brightness is substantially steady, realize the object of energy savings.
Above disclosedly be only an embodiment of the present invention, certainly the interest field of basis can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (9)
1. the light-dimming method of an ACLED, it is characterized in that adopting pwm signal directly to carry out chopping modulation to the AC voltage of ACLED work, keep AC voltage envelope waveform constant, AC voltage peak is constant, AC voltage effective value adjusts by the duty ratio of PWM, realize ACLED from 1 ?100% scope light modulation.
2. one kind realizes the induction light adjusting controller of ACLED light-dimming method, comprise load connection terminal, human motion inductive module, accessory power supply, light modulation interface and light modulation pwm signal and produce module, characterized by further comprising rectification circuit and realize the chopping modulation device that pwm signal modulates AC voltage, described load connection terminal inputs brachium pontis be connected with one of the full-wave rectification bridge of rectification circuit after connecting with any line of ac power cable, and another input brachium pontis of the full-wave rectification bridge of rectification circuit is connected with another power line of ac power cable; Connect with the output of rectification circuit in the main channel of chopping modulation device, light modulation pwm signal produces the output of module and is connected with the adjustment signal input part of chopping modulation device.
3. the induction light adjusting controller realizing ACLED light-dimming method according to claim 2, is characterized in that chopping modulation device is the semiconductor device that can be turned off by external control signal.
4. the induction light adjusting controller realizing ACLED light-dimming method according to claim 3, is characterized in that described semiconductor device is MOSFET, IGBT or BJT.
5. the induction light adjusting controller realizing ACLED light-dimming method according to claim 3 or 4, it is characterized in that light modulation pwm signal produces module is large scale integrated circuit or microcontroller circuit.
6. the induction light adjusting controller realizing ACLED light-dimming method according to claim 5, characterized by further comprising human motion inductive module, human motion inductive module is made up of microwave sensor and microwave signal process circuit, described microwave sensor is connected with described microwave signal process circuit, and described microwave signal process circuit produces module with described light modulation pwm signal and is connected.
7. the induction light adjusting controller realizing ACLED light-dimming method according to claim 6, characterized by further comprising light intensity sensor and optical signal processing circuit, described light intensity sensor is connected with optical signal processing circuit, and described optical signal processing circuit produces module with described light modulation pwm signal and is connected.
8. the induction light adjusting controller realizing ACLED light-dimming method according to claim 7, is characterized in that described light modulation interface is adjustable potentiometer, button, digital regulation resistance, toggle switch.
9. the induction light adjusting controller realizing ACLED light-dimming method according to claim 8, it is characterized in that the pwm signal that described light modulation pwm signal generation module produces is square-wave signal, PWM frequency is higher than the frequency of AC voltage.
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| CN201510698077.5A CN105208742A (en) | 2015-10-23 | 2015-10-23 | AC LED light adjustment method and inductive light adjustment controller |
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| CN201510698077.5A CN105208742A (en) | 2015-10-23 | 2015-10-23 | AC LED light adjustment method and inductive light adjustment controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601177A (en) * | 2018-05-17 | 2018-09-28 | 珠海市圣昌电子有限公司 | A kind of single-entry single-out touch phase-cut dimming controller |
| WO2020042722A1 (en) * | 2018-08-31 | 2020-03-05 | 深圳迈睿智能科技有限公司 | Microwave detector, microwave detection method and smart device |
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| US20110057568A1 (en) * | 2009-09-07 | 2011-03-10 | Industrial Technology Research Institute | Light Adjustment Circuit For Alternating-Current Light Emitting Diodes (AC-LED's) |
| CN102474953A (en) * | 2009-07-28 | 2012-05-23 | 首尔半导体股份有限公司 | Dimming device for a lighting apparatus |
| CN103780238A (en) * | 2012-10-23 | 2014-05-07 | 陈家德 | Infrared electric switch with automatic dimming function |
| CN203608435U (en) * | 2013-12-16 | 2014-05-21 | 慈溪锐恩电子科技有限公司 | Microwave induction LED lamp |
| CN204465938U (en) * | 2014-12-24 | 2015-07-08 | 首尔半导体株式会社 | Three-phase alternating-current supply LED light device and LED illumination System |
| US9084306B1 (en) * | 2012-03-27 | 2015-07-14 | Cooper Technologies Company | Dimming for light-emitting diode circuits |
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2015
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Patent Citations (7)
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| TW201014461A (en) * | 2008-09-05 | 2010-04-01 | Seoul Semiconductor Co Ltd | AC LED dimmer and dimming method thereby |
| CN102474953A (en) * | 2009-07-28 | 2012-05-23 | 首尔半导体股份有限公司 | Dimming device for a lighting apparatus |
| US20110057568A1 (en) * | 2009-09-07 | 2011-03-10 | Industrial Technology Research Institute | Light Adjustment Circuit For Alternating-Current Light Emitting Diodes (AC-LED's) |
| US9084306B1 (en) * | 2012-03-27 | 2015-07-14 | Cooper Technologies Company | Dimming for light-emitting diode circuits |
| CN103780238A (en) * | 2012-10-23 | 2014-05-07 | 陈家德 | Infrared electric switch with automatic dimming function |
| CN203608435U (en) * | 2013-12-16 | 2014-05-21 | 慈溪锐恩电子科技有限公司 | Microwave induction LED lamp |
| CN204465938U (en) * | 2014-12-24 | 2015-07-08 | 首尔半导体株式会社 | Three-phase alternating-current supply LED light device and LED illumination System |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108601177A (en) * | 2018-05-17 | 2018-09-28 | 珠海市圣昌电子有限公司 | A kind of single-entry single-out touch phase-cut dimming controller |
| CN108601177B (en) * | 2018-05-17 | 2024-04-09 | 珠海市圣昌电子有限公司 | Single-in single-out touch phase-cut dimming controller |
| WO2020042722A1 (en) * | 2018-08-31 | 2020-03-05 | 深圳迈睿智能科技有限公司 | Microwave detector, microwave detection method and smart device |
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Address after: 2, 3, 3 building, 380 Xiangshan Avenue, Luotian community, Songgang street, Shenzhen, Guangdong, Baoan District 518105, China Applicant after: SHENZHEN MERRY INTELLIGENT TECHNOLOGY CO., LTD. Address before: 518103, A building, Baoan District District, Fenghuang industrial first industrial zone, Fenghuang street, Fuyong, Guangdong, Shenzhen, Fourth Applicant before: SHENZHEN MERRY INTELLIGENT TECHNOLOGY CO., LTD. |
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Application publication date: 20151230 |
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