CN104754828A - Lighting control method, device and system for LED lamp - Google Patents
Lighting control method, device and system for LED lamp Download PDFInfo
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- CN104754828A CN104754828A CN201510108880.9A CN201510108880A CN104754828A CN 104754828 A CN104754828 A CN 104754828A CN 201510108880 A CN201510108880 A CN 201510108880A CN 104754828 A CN104754828 A CN 104754828A
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Abstract
The invention discloses a lighting control method, device and system for an LED lamp. The method comprises the steps of determining whether a control instruction for the LED lamp is the control instruction for brightness; if so, outputting current corresponding to the first duty ratio to a cool white LED lamp string set; outputting current corresponding to the second duty ratio to a warm white LED lamp string set, wherein the ratio of the first duty ratio to the second duty ratio is equal to the ratio of the third duty ratio to the fourth duty ratio; if not, outputting current corresponding to the fifth duty ratio to the cold white LED lamp string set; outputting the current corresponding to the sixth duty ratio to the warm white LED lamp string set, wherein the sum of the fifth duty ratio and the sixth duty ratio is equal to the sum of the third duty ratio and the fourth duty ratio. According to the technical scheme, the method has the advantages that one of the LED brightness and color temperature can be adjusted while another one is unchanged, which facilitates a user.
Description
Technical field
The present invention relates to lighting technical field, particularly relate to LED (Light Emitting Diode, Light-Emitting Diode) lamp luminescence control method, device and system.
Background technology
In general illumination field, the light modulation of light source has become one of important indicator weighing lighting apparatus serviceability.LED (Light Emitting Diode, Light-Emitting Diode) enters general illumination market as the efficient emerging green illumination light source of one.LED is a kind of solid-state semiconductor device, and it can be directly luminous energy electric energy conversion.The heart of LED is a semiconductor wafer, and one end of semiconductor wafer is attached on a support (as negative pole), and the other end of semiconductor wafer connects the positive pole of power supply, and whole wafer is got up by epoxy encapsulation.Semiconductor wafer is made up of two parts, and a part is P type semiconductor, and inside it, occupy an leading position in hole, and the other end of semiconductor wafer is N type semiconductor, at this side mainly electronics.Time these two kinds of semiconductors couple together, between them, just form one " P-N junction ".When electric current acts on this wafer by wire time, electronics will be pushed to P district, and in P district, electronics is with hole-recombination, then will send energy with the form of photon, the principle of LED luminescence that Here it is.And the wavelength of light determines the color of light, determine by forming P-N junction material.
In existing technology, the mode of normal employing controllable silicon light modulation or simulation light modulation realizes the light emitting control to LED.Thyristor regulating is only by regulating the power output of power supply to realize dimming function, and simulation light modulation is that the amplitude by changing output current realizes dimming function.Simulation light modulation, circuit is simple, easily realizes, but easily makes LED colour temperature change, and accurately cannot regulate colour temperature when keeping brightness constant.And thyristor regulating only utilizes existing controllable silicon dimmer, by changing the silicon controlled angle of flow, regulation output power realizes light modulation, but, which seriously can reduce drive efficiency and power factor, cannot regulate brightness when keeping colour temperature constant, and, along with the change flowing through LED current, the distortion of colour temperature also can be caused.
Therefore, the existing control mode for LED luminescence, cannot realize both LED luminance and colour temperature when maintenance one is constant, regulate another, make troubles to user.
Summary of the invention
In view of this, the invention provides a kind of LED lamp light-emitting control method, device and system, both LED luminance and colour temperature can be realized when maintenance one is constant, regulate another, bring conveniently to user.
For achieving the above object, the invention provides following technical scheme:
A kind of Light-Emitting Diode LED lamp light-emitting control method, comprising:
Obtain the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature;
Judge that whether described control command is the control command to brightness;
If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives;
If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
Preferably, described acquisition, to before the control command of described Light-Emitting Diode LED lamp, also comprises:
Obtain open command, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with 0.5 duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.
Preferably, the control command to described Light-Emitting Diode LED lamp is obtained by wireless communication module.
Preferably, the described control command to brightness of described response, calculates the first duty ratio and the second duty ratio respectively, comprising:
Brightness settings is obtained to the control command of brightness from described;
Described brightness settings is obtained the first rectification factor divided by present intensity value;
Calculate the product that described 3rd duty ratio and described first corrects factor, obtain described first duty ratio;
Calculate the product that described 4th duty ratio and described first corrects factor, obtain described second duty ratio.
Preferably, the described control command to colour temperature of described response, calculates the 5th duty ratio and the 6th duty ratio respectively, comprising:
Colour temperature set point is obtained to the control command of colour temperature from described;
Calculate seven duty ratio corresponding with described colour temperature set point and the 8th duty ratio respectively;
Calculate the ratio of present intensity value and 100% duty ratio brightness value, obtain the second rectification factor;
Calculate the product that described 7th duty ratio and described second corrects factor, obtain described 5th duty ratio;
Calculate the product that described 8th duty ratio and described second corrects factor, obtain described 6th duty ratio.
A kind of Light-Emitting Diode LED lamp emission control device, comprising:
First acquiring unit, for obtaining the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature;
Judging unit, for judging that whether described control command is the control command to brightness;
First control unit, for when described control command is the control command to brightness, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives;
Second control unit, for when described control command is the control command to colour temperature, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
Preferably, also comprise:
Second acquisition unit, for obtaining open command;
3rd control unit, exporting the electric current corresponding with 0.5 duty ratio for controlling described first pulse width modulation (PWM) constant flow module to described cold white Light-Emitting Diode LED string group, controlling described second pulse width modulation (PWM) constant flow module and exporting the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.
A kind of Light-Emitting Diode LED lamp luminescent control system, comprising:
Control module, the first pulse width modulation (PWM) constant flow module be connected with described control module, and the second pulse width modulation (PWM) constant flow module be connected with described control module;
The control operation of described control module comprises: obtain the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature; Judge that whether described control command is the control command to brightness; If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives.
Preferably, also comprise:
Be connected with described control module, receive the wireless communication module to described Light-Emitting Diode LED lamp control command.
Preferably, also comprise:
Accept user's input control, send the wireless transmission terminal to described Light-Emitting Diode LED lamp control command.
Known via above-mentioned technical scheme, compared with prior art, the invention provides a kind of LED lamp light-emitting control method, device and system.Adopt technical scheme provided by the invention, after getting the control command to described Light-Emitting Diode LED lamp, judge that described control command is control command to brightness or the control command to colour temperature, if to the control command of brightness, then respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group, concrete, the ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio, and (described 3rd duty ratio is for before responding described control command, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives, described 4th duty ratio is for before the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives), thus can realize in the process regulating brightness, ensure before brightness regulation and after regulating, output to the duty ratio of the pulse width modulation (PWM) signal of the first pulse width modulation (PWM) constant flow module, with the duty ratio of pulse width modulation (PWM) signal outputting to the second pulse width modulation (PWM) constant flow module, the two ratio is constant, make the duty ratio of the electric current exporting cold white LEDs lamp string group and warm white LEDs lamp string group respectively to, the relative percentage of the two keeps constant, so colour temperature keeps inconvenience.If to the control command of colour temperature, then respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Concrete, described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with; No matter how colour temperature changes, technical scheme provided by the invention, ensure to regulate the duty ratio flowing through the electric current of cold white Light-Emitting Diode LED string group before and after colour temperature, with flow through warm white Light-Emitting Diode LED string group current duty cycle and, keep inconvenience, just can realize ensureing brightness inconvenience while adjustment colour temperature.Therefore, technical scheme provided by the invention, can realize both LED luminance and colour temperature when maintenance one is constant, regulate another, brings conveniently to user.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The flow chart of a kind of Light-Emitting Diode LED lamp light-emitting control method that Fig. 1 provides for the embodiment of the present invention;
The structure chart of a kind of Light-Emitting Diode LED lamp emission control device that Fig. 2 provides for the embodiment of the present invention;
The structure chart of a kind of Light-Emitting Diode LED lamp luminescent control system that Fig. 3 provides for the embodiment of the present invention;
The structure chart of another Light-Emitting Diode LED lamp luminescent control system that Fig. 4 provides for the embodiment of the present invention;
The structure chart of the wireless transmission terminal that Fig. 5 provides for the embodiment of the present invention;
The structure chart of another Light-Emitting Diode LED lamp luminescent control system that Fig. 6 provides for the embodiment of the present invention.
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.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment
Refer to Fig. 1, the flow chart of a kind of Light-Emitting Diode LED lamp light-emitting control method that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the method comprises:
Step S101, obtains the control command to described Light-Emitting Diode LED lamp;
Concrete, described control command comprises the control command to brightness or the control command to colour temperature;
Concrete, optionally, obtain the control command to described Light-Emitting Diode LED lamp by wireless communication module.
Step S102, judges that whether described control command is the control command to brightness;
Concrete, if so, perform step S103, if not, perform step S104.
Step S103, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control a PWM (Pulse Width Modulation, pulse width modulation) constant flow module exports the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, controls the 2nd PWM constant flow module to the warm white Light-Emitting Diode LED string group output electric current corresponding with described second duty ratio;
Concrete, the ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio.Before described 3rd duty ratio is the described control command of response (being now the described control command to brightness), the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response (being now the described control command to brightness), the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives.
Further, the described control command to brightness of described response, calculates the first duty ratio and the second duty ratio respectively, comprising:
Brightness settings is obtained to the control command of brightness from described;
Described brightness settings is obtained the first rectification factor divided by present intensity value;
Calculate the product that described 3rd duty ratio and described first corrects factor, obtain described first duty ratio;
Calculate the product that described 4th duty ratio and described first corrects factor, obtain described second duty ratio.
Step S104, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control a described PWM constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described 2nd PWM constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group;
Concrete, described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.Before described 3rd duty ratio is the described control command of response (being now the described control command to colour temperature), the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response (being now the described control command to colour temperature), the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives.
Further, the described control command to colour temperature of described response, calculates the 5th duty ratio and the 6th duty ratio respectively, comprising:
Colour temperature set point is obtained to the control command of colour temperature from described;
Calculate seven duty ratio corresponding with described colour temperature set point and the 8th duty ratio respectively;
Concrete, calculate the 7th duty ratio and the 8th duty ratio by formula CW*x+WW* (1-x)=CT, wherein, CW is the colour temperature of cold white LEDs lamp string group, optionally, for the colour temperature that 6000k, WW are warm white LEDs lamp string group, optionally, for 3000k, CT is described colour temperature set point, and x is the 7th duty ratio, and (1-x) is the 8th duty ratio.It should be noted that, above-mentioned formula is for 100% duty ratio (when namely brightness is maximum), namely flow through the duty ratio of the electric current of described cold white LEDs lamp string group, add the duty ratio of the electric current flowing through described warm white LEDs lamp string group, equal 1 (namely 100%).
Calculate the ratio of present intensity value and 100% duty ratio brightness value, obtain the second rectification factor;
Calculate the product that described 7th duty ratio and described second corrects factor, obtain described 5th duty ratio;
Calculate the product that described 8th duty ratio and described second corrects factor, obtain described 6th duty ratio.
Adopt the technical scheme that the embodiment of the present invention provides, after getting the control command to described Light-Emitting Diode LED lamp, judge that described control command is control command to brightness or the control command to colour temperature, if to the control command of brightness, then respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control a PWM constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the 2nd PWM constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group, concrete, the ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio, and (described 3rd duty ratio is for before responding described control command, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives, described 4th duty ratio is for before the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives), thus can realize in the process regulating brightness, ensure before brightness regulation and after regulating, output to the duty ratio of the pwm signal of a PWM constant flow module, with the duty ratio of pwm signal outputting to the 2nd PWM constant flow module, the two ratio is constant, make the duty ratio of the electric current exporting cold white LEDs lamp string group and warm white LEDs lamp string group respectively to, the relative percentage of the two keeps constant, so colour temperature keeps inconvenience.If to the control command of colour temperature, then respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control a described PWM constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described 2nd PWM constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Concrete, described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with; No matter how colour temperature changes, technical scheme provided by the invention, ensure to regulate the duty ratio flowing through the electric current of cold white Light-Emitting Diode LED string group before and after colour temperature, with flow through warm white Light-Emitting Diode LED string group current duty cycle and, keep inconvenience, just can realize ensureing brightness inconvenience while adjustment colour temperature.Therefore, technical scheme provided by the invention, can realize both LED luminance and colour temperature when maintenance one is constant, regulate another, brings conveniently to user.
Further, the technical scheme that the embodiment of the present invention provides, before described step S101, also comprises:
Obtain open command, control a described PWM constant flow module and export the electric current corresponding with 0.5 duty ratio to described cold white Light-Emitting Diode LED string group, control described 2nd PWM constant flow module and export the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.Performing this step can after getting open command, the described PWM constant flow module of automatic control exports the electric current corresponding with 0.5 duty ratio to described cold white Light-Emitting Diode LED string group, automatic control controls described 2nd PWM constant flow module and exports the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group, thus the light that control LED string group emits automatically presents neutral light.
In order to more comprehensively set forth technical scheme provided by the invention, the present invention also provides a kind of Light-Emitting Diode LED lamp emission control device.
Refer to Fig. 2, the structure chart of a kind of Light-Emitting Diode LED lamp emission control device that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, this device comprises:
First acquiring unit 201, for obtaining the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature;
Judging unit 202, for judging that whether described control command is the control command to brightness;
First control unit 203, for when described control command is the control command to brightness, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control a PWM constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the 2nd PWM constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives;
Second control unit 204, for when described control command is the control command to colour temperature, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control a described PWM constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described 2nd PWM constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
Further, the Light-Emitting Diode LED lamp emission control device that the embodiment of the present invention provides, also comprises:
Second acquisition unit, for obtaining open command;
3rd control unit, exporting the electric current corresponding with 0.5 duty ratio for controlling a described PWM constant flow module to described cold white Light-Emitting Diode LED string group, controlling described 2nd PWM constant flow module and exporting the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.
In addition, the present invention also provides a kind of Light-Emitting Diode LED lamp luminescent control system.
Refer to Fig. 3, the structure chart of a kind of Light-Emitting Diode LED lamp luminescent control system that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, this system comprises:
Control module 301, the PWM constant flow module 302 be connected with described control module 301, and the 2nd PWM constant flow module 303 be connected with described control module 301;
The control operation of described control module 301 comprises: obtain the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature; Judge that whether described control command is the control command to brightness; If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives.
Further, refer to Fig. 4, the structure chart of another Light-Emitting Diode LED lamp luminescent control system that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4, this system comprises:
Control module 401, the PWM constant flow module 402 be connected with described control module 401; The 2nd PWM constant flow module 403 be connected with described control module 401; Be connected with described control module 401, receive the wireless communication module 404 to described Light-Emitting Diode LED lamp control command; And accept user's input control, send the wireless transmission terminal 405 to described Light-Emitting Diode LED lamp control command;
The control operation of described control module 401 comprises: the control command to described Light-Emitting Diode LED lamp being obtained the transmission of described wireless transmission terminal 405 by described wireless communication module 404; Described control command comprises the control command to brightness or the control command to colour temperature; Judge that whether described control command is the control command to brightness; If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control a PWM constant flow module 402 and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the 2nd PWM constant flow module 403 and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Described 3rd duty ratio be the described control command of response before the duty ratio of pwm signal that receives of a described PWM constant flow module 402; Described 4th duty ratio be the described control command of response before the duty ratio of pwm signal that receives of described 2nd PWM constant flow module 403; If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control a described PWM constant flow module 402 and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described 2nd PWM constant flow module 403 and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
Concrete, described wireless transmission terminal 405 optionally, is remote controller.
Refer to Fig. 5, the structure chart of the wireless transmission terminal that Fig. 5 provides for the embodiment of the present invention.As shown in Figure 5, this wireless transmission terminal comprises:
Main control module 4051, the touch-control module 4052 be connected with described main control module 4051, the touch key-press group 4053 be connected with described touch-control module 4052, the wireless signal transmitting module 4054 be connected with described main control module 4051, and be responsible for DC (Direct Current, direct current) the constant voltage module 4055 of power supply.
Described DC constant voltage module 4055 optionally, is battery.
Concrete, touch key-press group 4053 comprises switch key, brightness regulation button, colour temperature regulating key, and the most cold white shortcut key of high color temperature and lowest color temperature warm up white shortcut key.Described key information for receiving the key information of user's input, and is sent to main control module 4051 by described touch-control module 4052.Described main control module 4051, for identifying the key information that user inputs, obtains the control command of user to described Light-Emitting Diode LED lamp, is sent to described wireless communication module 404 by described wireless signal transmitting module 4054.
It should be noted that, about the supply of electric energy, optionally, Light-Emitting Diode LED lamp luminescent control system disclosed in the embodiment of the present invention, a described PWM constant flow module is connected with cold white LEDs lamp string group, described 2nd PWM constant flow module is connected with warm white LEDs lamp string group, a described PWM constant flow module and described 2nd PWM constant flow module respectively with DC-DC (Direct Current, direct current) output of voltage reduction module is connected, described control module is connected with the output of described DC-DC voltage reduction module, the input of described DC-DC voltage reduction module is connected with the output of DC constant voltage source, the input termination civil power of described DC constant voltage source, control module connects wireless communication module, wireless communication module realizes being connected with wireless transmission terminal by the mode of radio communication, specifically can see Fig. 6, the structure chart of another Light-Emitting Diode LED lamp luminescent control system that Fig. 6 provides for the embodiment of the present invention.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment and system, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a Light-Emitting Diode LED lamp light-emitting control method, is characterized in that, comprising:
Obtain the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature;
Judge that whether described control command is the control command to brightness;
If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives;
If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
2. method according to claim 1, is characterized in that, described acquisition, to before the control command of described Light-Emitting Diode LED lamp, also comprises:
Obtain open command, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with 0.5 duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.
3. method according to claim 1, is characterized in that, obtains the control command to described Light-Emitting Diode LED lamp by wireless communication module.
4. method according to claim 1, is characterized in that, the described control command to brightness of described response, calculates the first duty ratio and the second duty ratio respectively, comprising:
Brightness settings is obtained to the control command of brightness from described;
Described brightness settings is obtained the first rectification factor divided by present intensity value;
Calculate the product that described 3rd duty ratio and described first corrects factor, obtain described first duty ratio;
Calculate the product that described 4th duty ratio and described first corrects factor, obtain described second duty ratio.
5. method according to claim 1, is characterized in that, the described control command to colour temperature of described response, calculates the 5th duty ratio and the 6th duty ratio respectively, comprising:
Colour temperature set point is obtained to the control command of colour temperature from described;
Calculate seven duty ratio corresponding with described colour temperature set point and the 8th duty ratio respectively;
Calculate the ratio of present intensity value and 100% duty ratio brightness value, obtain the second rectification factor;
Calculate the product that described 7th duty ratio and described second corrects factor, obtain described 5th duty ratio;
Calculate the product that described 8th duty ratio and described second corrects factor, obtain described 6th duty ratio.
6. a Light-Emitting Diode LED lamp emission control device, is characterized in that, comprising:
First acquiring unit, for obtaining the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature;
Judging unit, for judging that whether described control command is the control command to brightness;
First control unit, for when described control command is the control command to brightness, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives;
Second control unit, for when described control command is the control command to colour temperature, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with.
7. device according to claim 6, is characterized in that, also comprises:
Second acquisition unit, for obtaining open command;
3rd control unit, exporting the electric current corresponding with 0.5 duty ratio for controlling described first pulse width modulation (PWM) constant flow module to described cold white Light-Emitting Diode LED string group, controlling described second pulse width modulation (PWM) constant flow module and exporting the electric current corresponding with 0.5 duty ratio to described warm white Light-Emitting Diode LED string group.
8. a Light-Emitting Diode LED lamp luminescent control system, is characterized in that, comprising:
Control module, the first pulse width modulation (PWM) constant flow module be connected with described control module, and the second pulse width modulation (PWM) constant flow module be connected with described control module;
The control operation of described control module comprises: obtain the control command to described Light-Emitting Diode LED lamp; Described control command comprises the control command to brightness or the control command to colour temperature; Judge that whether described control command is the control command to brightness; If, respond the described control command to brightness, calculate the first duty ratio and the second duty ratio respectively, control the first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described first duty ratio to cold white Light-Emitting Diode LED string group, control the second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described second duty ratio to warm white Light-Emitting Diode LED string group; The ratio of described first duty ratio and described second duty ratio equals the ratio of the 3rd duty ratio and the 4th duty ratio; If not, respond the described control command to colour temperature, calculate the 5th duty ratio and the 6th duty ratio respectively, control described first pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 5th duty ratio to described cold white Light-Emitting Diode LED string group, control described second pulse width modulation (PWM) constant flow module and export the electric current corresponding with described 6th duty ratio to described warm white Light-Emitting Diode LED string group; Described 5th duty ratio and described 6th duty ratio and equal described 3rd duty ratio and described 4th duty ratio with; Before described 3rd duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described first pulse width modulation (PWM) constant flow module receives; Before described 4th duty ratio is the described control command of response, the duty ratio of the pulse width modulation (PWM) signal that described second pulse width modulation (PWM) constant flow module receives.
9. system according to claim 8, is characterized in that, also comprises:
Be connected with described control module, receive the wireless communication module to described Light-Emitting Diode LED lamp control command.
10. system according to claim 9, is characterized in that, also comprises:
Accept user's input control, send the wireless transmission terminal to described Light-Emitting Diode LED lamp control command.
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