CN102123548B - Brightness adjusting method and system of LED lamp - Google Patents
Brightness adjusting method and system of LED lamp Download PDFInfo
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- CN102123548B CN102123548B CN201010614800.4A CN201010614800A CN102123548B CN 102123548 B CN102123548 B CN 102123548B CN 201010614800 A CN201010614800 A CN 201010614800A CN 102123548 B CN102123548 B CN 102123548B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention discloses a brightness adjusting method and system of an LED lamp. The system comprises a remote controller and an LED illumination circuit, wherein the LED illumination circuit comprises a power supply module, an LED lamp bank and a switch module; the power supply module is connected with AC (Alternating Current) input, one end of the LED lamp bank is connected with a power supply, and the other end of the LED lamp bank is connected with the switch module and is ground through the switch module; the power supply module is connected with the switch module and used for controlling on-off of the switch module; and the remote controller is wirelessly connected with the power supply module and used for sending a control instruction to adjust the output of the power supply module. The invention can be used for adjusting the brightness of the LED lamp without changing the color temperature of the LED lamp and ensure that the LED lamp always keeps unchanged color of emitted light under any brightness.
Description
Technical field
The present invention relates to a kind of LED lighting field, in particular a kind of LED lamp brightness adjusting method and system.
Background technology
Along with developing rapidly of LED technology, the performance of LED is greatly improved.The application of LED is more and more extensive, particularly at lighting field, and very general of the application of LED.LED lamp relates to the problem of brilliance control in the process of application, because the existing light modulation to the brightness of LED lamp of characteristic of circuit is by regulating the amplitude size of LED lamp input current.Although this brightness regulation can regulate the brightness of LED lamp, thus because of for a change current amplitude can affect the colour temperature of LED lamp, can make the illumination color of LED lamp change.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of LED lamp brightness adjusting method and system, can be because of the problem that for a change current amplitude changes the colour temperature of LED thereby be intended to solve the light regulating technology of existing LED lamp.
Technical scheme of the present invention is as follows: a kind of LED lamp brightness adjusting method, and it comprises the following steps:
S1: receive the light modulation instruction that remote controller sends, and whether identify this light modulation operational order be effectively, effectively perform step S2; Invalidly do not respond light modulation instruction;
S2: dimming controlling module is resolved light modulation instruction, if improve the duty ratio that illumination brightness increases pulse current, if reduce the duty ratio that illumination brightness reduces pulse current.
Described LED lamp brightness adjusting method, wherein, described increase or the method that reduces duty ratio are by controlling the conducting of switch module or the time of cut-off on lighting circuit.
A kind of LED lamp brightness control system, wherein, comprise remote controller and LED lighting circuit, described LED lighting circuit comprises power module, LED lamp group and switch module, described power module connects AC input, described LED lamp group one end connects power supply, other end connecting valve module, and by switch module ground connection; Described power module connects described switch module, for the break-make of control switch module; Power module described in described remote controller wireless connections, described remote controller regulates the output of described power module for sending control command.
Described LED lamp brightness control system, wherein, described power module comprises AC/DC module, Receiver Module and microcontroller chip, and described AC/DC module connects AC input, and described LED lamp group connects the output of described AC/DC module; Described Receiver Module connects described microcontroller chip, the brightness adjustment control instruction of sending for receiving remote controller; Described microcontroller chip connects described AC/DC module, described microcontroller chip comprises code identification module and dimming controlling module, described code identification module connects Receiver Module and dimming controlling module, described dimming controlling module connects described switch module, and described code identification module is for identifying coding that Receiver Module receives whether universal coding or the absolute coding that closely matches; Described dimming controlling module is used for responding control command.
Described LED lamp brightness control system, wherein, described switch module is a metal-oxide-semiconductor.
Described LED lamp brightness control system, wherein, the signal tranmitting frequency of described remote controller is 2.4GHz.
Described LED lamp brightness control system, wherein, is provided with a time block for conducting or the deadline of timing switch module in described dimming controlling module.
Beneficial effect of the present invention: the present invention realizes the control of LED lamp brightness by the method for regulating impulse width, its benefit is the colour temperature that not only can regulate the brightness of LED lamp and can not change LED lamp, makes LED lamp no matter all can keep glow color can not change under what brightness.
Accompanying drawing explanation
Fig. 1 is the system block diagram of LED lamp brightness regulation control circuit provided by the invention.
Fig. 2 is the concrete structure block diagram of LED lighting circuit provided by the invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, clear and definite, referring to accompanying drawing, developing simultaneously, the present invention is described in more detail for embodiment.
Referring to Fig. 1, in LED lamp brightness control system provided by the invention, LED lamp brightness regulation control command is sent by remote controller, described system comprises remote controller and LED lighting circuit, described LED lighting circuit comprises power module, LED lamp group and switch module, described power module connects AC input, described LED lamp group one end connects power supply, other end connecting valve module, by switch module ground connection; Described power module connects described switch module, for the break-make of control switch module.Power module described in described remote controller wireless connections, described remote controller can send control command the output of described power module is regulated.The shell of existing power supply is all metal shell, therefore in the tranmitting frequency of selecting remote controller, will consider the power of the penetration capacity of signal, and the set of frequency of the radiofrequency signal that radiofrequency emitting module provided by the invention sends is 2.4GHz.And with broadcast mode outwards send signal, have non-directional, the benefit that applicability is strong.
Referring to Fig. 2, described power module comprises AC/DC module, Receiver Module and microcontroller chip, and described AC/DC module connects AC input, and described LED lamp group connects the output of described AC/DC module.Described Receiver Module connects described microcontroller chip, and described microcontroller chip connects described AC/DC module.Described microcontroller chip comprises code identification module and dimming controlling module, described code identification module connects Receiver Module and dimming controlling module, described dimming controlling module connects described switch module, and described Receiver Module is for receiving control command and the coding that remote controller sends; Described code identification module, for identifying coding that Receiver Module receives whether universal coding or the absolute coding that closely matches, is control command to be sent to dimming controlling module, otherwise control command is not sent to dimming controlling module; Described dimming controlling module changes the brightness of LED lamp for make the operation of control switch module break-make according to control command by changing duty ratio.
Described remote controller is provided with the independent button of controlling that can control all LED lamp group general controls buttons and control one or one group LED lamp, when remote controller is while sending control command by general controls button, the coding that described control command is carried is the universal coding coding that all LED power supply can both respond; When remote controller is when independently controlling button and send control command, the coding that described control command is carried is that absolute coding only has with remote controller and carried out the coding that the LED power supply of pairing can respond.Whether the effect of described code identification module is exactly to be the absolute coding that universal coding or code identification module are stored for identifying the entrained coding of control command, if it is responds control command; If not not responding any operation.
The control command of sending when remote controller is is high-high brightness by LED lamp brightness regulation 75%, the Receiver Module of power module receives control command and the coding that remote controller sends, and described code identification module judges whether this control command is to control this power module.If it is control command is issued to dimming controlling module, described dimming controlling module, according to the make-and-break time ratio of control command control switch module, is adjusted into 75% by the duty ratio of LED lamp pulse electric current.
LED lamp brightness adjusting method provided by the invention comprises step: S1: receive the light modulation instruction that remote controller sends, and whether identify this light modulation operational order be effectively, effectively perform step S2; Invalidly do not respond light modulation instruction.
S2: dimming controlling module is resolved light modulation instruction, if improve the duty ratio that illumination brightness increases pulse current, if reduce the duty ratio that illumination brightness reduces pulse current.
Now with specific embodiment, above-mentioned light-dimming method is further expalined to explanation, the current amplitude of existing LED lamp is 460mA, duty ratio is 60%, supposes that the stepping that remote controller carries out light modulation is 10%, and the duty ratio of LED lamp current is 40%, 50%, 60%, 70%, 80% etc.Described dimming controlling module receives after light modulation instruction, and light modulation instruction is resolved, and obtains and will improve brightness or will reduce brightness and the amplitude of raising and reduction is how many.Described dimming controlling module resolves to the time ratio of the switch module break-make in LED lamp group according to the number of light modulation amplitude, then by the ON time of control switch module, realize the control of duty ratio.
The light modulation instruction that for example dimming controlling module is resolved be that current duty ratio is 60% by brightness increase by 20%, and the pulse current time cycle is t, and timing is made as to 0.8t is that time of switch module conducting is 0.8t to the time block in dimming controlling module.Switch module described in the present embodiment is metal-oxide-semiconductor.
The present invention realizes the control of LED lamp brightness by the method for regulating impulse width, its benefit is the colour temperature that not only can regulate the brightness of LED lamp and can not change LED lamp, makes LED lamp no matter all can keep glow color can not change under what brightness.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (6)
1. a LED lamp brightness adjusting method, is characterized in that, comprises the following steps:
S1: receive the light modulation instruction that remote controller sends, and whether identify this light modulation instruction be effectively, effectively perform step S2; Invalidly do not respond light modulation instruction;
S2: dimming controlling module is resolved light modulation instruction, if improve the duty ratio that illumination brightness increases pulse current, if reduce the duty ratio that illumination brightness reduces pulse current;
In S1, Receiver Module is for receiving light modulation instruction and the coding that remote controller sends; Code identification module, for identifying coding that Receiver Module receives whether universal coding or the absolute coding that matched, is light modulation instruction to be sent to dimming controlling module, otherwise light modulation instruction is not sent to dimming controlling module;
In S2, dimming controlling module changes the brightness of LED lamp for make the operation of control switch module break-make according to light modulation instruction by changing duty ratio;
Coding is carried in described light modulation instruction, and universal coding is the coding that all LED power supplys can both respond; Absolute coding is to only have with remote controller to have carried out the coding that the LED power supply of pairing can respond.
2. LED lamp brightness adjusting method according to claim 1, is characterized in that, increases or the method that reduces duty ratio is by controlling the conducting of switch module or the time of cut-off on lighting circuit.
3. a LED lamp brightness control system, it is characterized in that, comprise remote controller and LED lighting circuit, described LED lighting circuit comprises power module, LED lamp group and switch module, described power module connects AC input, described LED lamp group one end connects power supply, other end connecting valve module, and by switch module ground connection; Described power module connects described switch module, for the break-make of control switch module; Power module described in described remote controller wireless connections, described remote controller regulates the output of described power module for sending light modulation instruction;
Described power module comprises AC/DC module, Receiver Module and microcontroller chip, and described AC/DC module connects AC input, and described LED lamp group connects the output of described AC/DC module; Described Receiver Module connects described microcontroller chip, the light modulation instruction of sending for receiving remote controller; Described microcontroller chip connects described AC/DC module, described microcontroller chip comprises code identification module and dimming controlling module, described code identification module connects Receiver Module and dimming controlling module, described dimming controlling module connects described switch module, described code identification module is for identifying coding that Receiver Module receives whether universal coding or the absolute coding that matched, be light modulation instruction to be sent to dimming controlling module, otherwise light modulation instruction do not sent to dimming controlling module; Described dimming controlling module is used for responding light modulation instruction, and the operation of making control switch module break-make according to light modulation instruction changes the brightness of LED lamp by changing duty ratio;
Coding is carried in described light modulation instruction, and universal coding is the coding that all LED power supplys can both respond; Absolute coding is to only have with remote controller to have carried out the coding that the LED power supply of pairing can respond.
4. LED lamp brightness control system according to claim 3, is characterized in that, described switch module is a metal-oxide-semiconductor.
5. LED lamp brightness control system according to claim 3, is characterized in that, the signal tranmitting frequency of described remote controller is 2.4GHz.
6. LED lamp brightness control system according to claim 3, is characterized in that, is provided with a time block for conducting or the deadline of timing switch module in described dimming controlling module.
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| CN201010614800.4A CN102123548B (en) | 2010-12-30 | 2010-12-30 | Brightness adjusting method and system of LED lamp |
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| CN201010614800.4A CN102123548B (en) | 2010-12-30 | 2010-12-30 | Brightness adjusting method and system of LED lamp |
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| CN102243854B (en) * | 2011-08-18 | 2013-10-16 | 深圳市华星光电技术有限公司 | LED (light emitting diode) backlight driving method, liquid crystal display device and LED backlight driving circuit |
| CN104507240A (en) * | 2015-01-13 | 2015-04-08 | 刘胜泉 | LED (light-emitting diode) lamp control device |
| CN106774531A (en) * | 2016-12-19 | 2017-05-31 | 广州市邦沃电子科技有限公司 | A kind of frequency conversion and segmented control LED UV solidification equipments and control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321421A (en) * | 2008-07-02 | 2008-12-10 | 华振科技(深圳)有限公司 | Wireless remote control light modulation LED apparatus |
| CN101742766A (en) * | 2008-11-20 | 2010-06-16 | 深圳市桑达实业股份有限公司 | LED light dimming method and device |
| CN101841950A (en) * | 2009-12-29 | 2010-09-22 | 深圳市众明半导体照明有限公司 | LED driving power supply and LED light source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321421A (en) * | 2008-07-02 | 2008-12-10 | 华振科技(深圳)有限公司 | Wireless remote control light modulation LED apparatus |
| CN101742766A (en) * | 2008-11-20 | 2010-06-16 | 深圳市桑达实业股份有限公司 | LED light dimming method and device |
| CN101841950A (en) * | 2009-12-29 | 2010-09-22 | 深圳市众明半导体照明有限公司 | LED driving power supply and LED light source |
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Address after: 518110 Guangdong city of Shenzhen province Baoan District Guanlan Street Library pit Jingquan Industrial Park Applicant after: Shenzhen JingQuanHua Electronics Co., Ltd. Address before: 518110 Guangdong city of Shenzhen province Baoan District Guanlan Street Library pit Jingquan Industrial Park Applicant before: Shenzhen Jingquanhua Electronics Co., Ltd. |
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Owner name: SHENZHEN OUBANG ELECTRONICS CO., LTD. Free format text: FORMER OWNER: SHENZHEN JINGQUANHUA TECHNOLOGY CO., LTD. Effective date: 20150415 |
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Effective date of registration: 20150415 Address after: 518110, Guangdong, Shenzhen Province, Longhua New District Guanlan street, Fu hang community, Si Li Road, Silicon Valley power third park, No. 130, A2 building, 3 floor, A surface Patentee after: Shenzhen Ou Bang Electronics Co., Ltd. Address before: 518110 Guangdong city of Shenzhen province Baoan District Guanlan Street Library pit Jingquan Industrial Park Patentee before: Shenzhen JingQuanHua Electronics Co., Ltd. |
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Owner name: SHENZHEN JINGQUANHUA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN OUBANG ELECTRONICS CO., LTD. Effective date: 20150825 |
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Effective date of registration: 20150825 Address after: 518110 Guangdong city of Shenzhen province Baoan District Guanlan Street Library pit Jingquan Industrial Park Patentee after: Shenzhen JingQuanHua Electronics Co., Ltd. Address before: 518110, Guangdong, Shenzhen Province, Longhua New District Guanlan street, Fu hang community, Si Li Road, Silicon Valley power third park, No. 130, A2 building, 3 floor, A surface Patentee before: Shenzhen Ou Bang Electronics Co., Ltd. |