CN115243425A - Silicon controlled rectifier dimming and color mixing method, silicon controlled rectifier dimming and color mixing device and lamp - Google Patents
Silicon controlled rectifier dimming and color mixing method, silicon controlled rectifier dimming and color mixing device and lamp Download PDFInfo
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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- H05B47/10—Controlling the light source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
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Abstract
The application belongs to the technical field of lamps, and provides a silicon controlled rectifier dimming and toning method, a silicon controlled rectifier dimming and toning device and a lamp, wherein a chopping signal output by a silicon controlled rectifier is obtained firstly, the chopping signal is converted into a corresponding pulse width modulation signal, then the duty ratio of the pulse width modulation signal is detected, and when the duty ratio of the pulse width modulation signal changes, whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time is judged, if yes, the color of a light source module is switched, and the light source module is driven to be lightened by the switched color; if not, the light emitting parameters of the light source module are adjusted according to the duty ratio of the changed pulse width modulation signal, so that the switching control of multiple colors can be realized through the adjustment of the silicon controlled rectifier, and the problem that the switching control of multiple light colors cannot be realized through the silicon controlled rectifier is solved.
Description
Technical Field
The application relates to the technical field of lamps, in particular to a silicon controlled rectifier dimming and color mixing method, a silicon controlled rectifier dimming and color mixing device and a lamp.
Background
The silicon controlled dimmer has the function of controllable dimming, the silicon controlled dimming is a dimming mode which is commonly applied to incandescent lamps and energy-saving lamps at present, the working principle of the silicon controlled dimmer reduces the effective value of output voltage after the waveform of input voltage passes through the silicon controlled dimmer, and the purpose of reducing the power of common loads (resistance loads) is achieved.
However, at present, the thyristor is used as a dimming tool, and only dimming or color temperature of the lamp can be performed, and switching control of multiple light colors cannot be realized through the thyristor.
Disclosure of Invention
The application aims to provide a lamp intensity control method, a control system and a lamp, which can avoid the problem that the brightness of the lamp is too dazzling or too dark, so that the human eyes of a user feel uncomfortable.
The first aspect of the embodiments of the present application provides a silicon controlled rectifier dimming and color mixing method, where the silicon controlled rectifier dimming and color mixing method includes:
obtaining a chopping signal output by the silicon controlled rectifier, and converting the chopping signal into a corresponding pulse width modulation signal;
detecting the duty ratio of the pulse width modulation signal, and judging whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time when the duty ratio of the pulse width modulation signal changes;
if so, switching the color of the light source module, and driving the light source module to light up with the switched color;
and if not, adjusting the light emitting parameters of the light source module according to the changed duty ratio of the pulse width modulation signal.
In one embodiment, after the switching the color of the light source module and driving the light source module to light up with the switched color, the method further includes:
detecting the duty ratio of the pulse width modulation signal, and judging whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time when the duty ratio of the pulse width modulation signal changes;
if so, switching the color of the light source module, and driving the light source module to light up with the switched color;
if not, the brightness of the light source module is adjusted according to the duty ratio of the changed pulse width modulation signal.
In one embodiment, the adjusting the lighting parameters of the light source module according to the varied duty ratio of the pulse width modulation signal includes:
determining the working brightness value of the light source module according to the changed duty ratio of the pulse width modulation signal;
and generating a light source driving signal according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.
In one embodiment, the determining the brightness value of the light source module according to the varied duty ratio of the pwm signal includes:
and inquiring a brightness value corresponding to the duty ratio from a preset duty ratio and brightness value relation table according to the changed duty ratio of the pulse width modulation signal, and taking the brightness value as the working brightness value.
In one embodiment, if the duty ratio of the pwm signal is not changed, the light source driving signal is output at the current duty ratio to drive the light source module to light up at the current set color and brightness.
The second aspect of the embodiment of the present application further provides a silicon controlled rectifier dimming and color mixing method, where the silicon controlled rectifier dimming and color mixing method includes:
obtaining a chopping signal output by the silicon controlled rectifier, and converting the chopping signal into a corresponding pulse width modulation signal;
detecting the duty ratio of the pulse width modulation signal, and determining the light emitting parameters of the light source module according to the duty ratio of the pulse width modulation signal, wherein the light emitting parameters comprise light emitting color and light emitting brightness;
and driving the light source module to light according to the light emitting parameters.
The third aspect of the embodiment of this application still provides a silicon controlled rectifier mixing of colors device of adjusting luminance, silicon controlled rectifier mixing of colors device of adjusting luminance includes:
the signal conversion unit is used for acquiring a chopping signal output by the silicon controlled rectifier and converting the chopping signal into a corresponding pulse width modulation signal;
the detection unit is used for judging whether the duty ratio of the pulse width modulation signal reaches a preset switching duty ratio within a preset threshold value time after the duty ratio of the pulse width modulation signal changes;
and the driving unit is used for switching the color of the light source module when the duty ratio of the pulse width modulation signal reaches a preset switching duty ratio within a preset threshold time, driving the light source module to be lightened by the switched color, and adjusting the brightness of the light source module according to the changed duty ratio of the pulse width modulation signal when the duty ratio of the pulse width modulation signal does not reach the preset switching duty ratio within the preset threshold time.
In an embodiment, the driving unit is further configured to determine an operating brightness value of the light source module according to the changed duty ratio of the pulse width modulation signal when the duty ratio of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light at a brightness corresponding to the operating brightness value.
In one embodiment, the driving unit is further configured to output a light source driving signal at a current duty ratio when the duty ratio of the pulse width modulation signal is not changed, so as to drive the light source module to light at a currently set color and brightness.
The fourth aspect of the embodiments of the present application further provides a lamp, where the lamp includes: a light source module; and the control unit is used for executing the silicon controlled rectifier dimming and toning method to drive the light source module to light.
The embodiment of the application provides a silicon controlled rectifier dimming and color mixing method, a silicon controlled rectifier dimming and color mixing device and a lamp, wherein a chopping signal output by a silicon controlled rectifier is obtained firstly, the chopping signal is converted into a corresponding pulse width modulation signal, then the duty ratio of the pulse width modulation signal is detected, and when the duty ratio of the pulse width modulation signal changes, whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time is judged, if yes, the color of a light source module is switched, and the light source module is driven to be lightened by the switched color; if not, the light emitting parameters of the light source module are adjusted according to the duty ratio of the changed pulse width modulation signal, so that the switching control of multiple colors can be realized through the adjustment of the silicon controlled rectifier, and the problem that the switching control of multiple light colors cannot be realized through the silicon controlled rectifier is solved.
Drawings
Fig. 1 is a schematic flow chart of a silicon controlled rectifier dimming and color matching method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a chopped waveform provided by an embodiment of the present application;
fig. 3 is a schematic flowchart of another silicon controlled rectifier dimming and color matching method provided in the embodiment of the present application;
fig. 4 is a schematic flowchart of step S30 in the silicon controlled rectifier dimming and color mixing method provided in the embodiment of the present application;
fig. 5 is a schematic flowchart of another silicon controlled rectifier dimming and color matching method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a thyristor dimming and color-adjusting device provided in the embodiment of the present application;
fig. 7 is a schematic structural diagram of a driving circuit of a lamp according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying that the number of indicated technical features is indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
At present, the silicon controlled light dimming lamp can only dim light or adjust color temperature through the silicon controlled, and the switching control of various light colors can not be realized through the silicon controlled.
In order to solve the above technical problem, an embodiment of the present application provides a silicon controlled rectifier dimming and color adjusting method, as shown in fig. 1, the silicon controlled rectifier dimming and color adjusting method in the embodiment includes step S10, step S20, and step S30.
In step S10, a chopper signal output by the thyristor is obtained, and the chopper signal is converted into a corresponding pulse width modulation signal.
In this embodiment, the thyristor performs chopping processing on an input voltage waveform, and converts an obtained chopped signal into a pulse width modulation signal.
In one particular application, the duty cycle of the pulse width modulated signal corresponds one-to-one to the duty cycle of the chopping signal, e.g., the duty cycle of the pulse width modulated signal is the same as the duty cycle of the chopping signal.
Referring to FIG. 2, the vertical axis is voltage, the horizontal axis is time, VSIN is input voltage, V TD For the high level of the pulse width modulation signal after the conversion processing, tc is the time of the high level, ts is the time of each period of the input voltage, and the duty ratio duty of the pulse width modulation signal = Tc/Ts.
In step S20, the duty ratio of the pwm signal is detected, and when the duty ratio of the pwm signal varies, it is determined whether the duty ratio of the pwm signal reaches a preset color switching duty ratio within a preset color switching threshold time.
In this embodiment, the phase angle of the thyristor is determined by detecting the duty ratio of the pulse width modulation signal, and usually, the duty ratio of the pulse width modulation signal corresponds to the phase angle of the thyristor one to one. Therefore, the dimming and color mixing mode of the light source module can be determined through the duty ratio of the pulse width modulation signal, the dimming and color mixing mode of the light source module can comprise a dimming mode and a color mixing mode, the dimming mode is to chop the input voltage based on the duty ratio of the pulse width modulation signal so as to adjust the brightness of the light source module, and the color mixing mode is to switch the light color when the pulse width modulation signal reaches the preset condition.
In one embodiment, the preset color switching threshold time may be a preset time T0 after the duty ratio of the pwm signal is changed, the preset time T0 may include a plurality of consecutive pwm signal periods, and the sum of the duty ratios of the pwm signal within the preset time T0 is calculated, and if the sum of the duty ratios of the pwm signal within the preset time T0 is greater than the preset color switching duty ratio, the light color of the light source module is switched.
In step S30, if yes, switching the color of the light source module, and driving the light source module to light up with the switched color; if not, adjusting the light-emitting parameters of the light source module according to the duty ratio of the changed pulse width modulation signal.
In this embodiment, when the duty ratio of the pwm signal varies, it is determined whether the duty ratio of the pwm signal reaches a preset color switching duty ratio within a preset color threshold time, if the duty ratio of the pwm signal reaches the preset color switching duty ratio within the preset color threshold time, the pwm module enters a color mixing mode, and when a condition is met each time, that is, the duty ratio of the pwm signal reaches the preset color switching duty ratio within the preset color threshold time, the color of the light source module is switched once, and the switching sequence may be switched according to a preset sequence of a plurality of light colors, for example, the sequence of the light colors may be red, green, blue, and white.
And if the duty ratio of the pulse width modulation signal does not reach the preset color switching duty ratio within the preset color threshold time, directly adjusting the light emitting parameters of the light source module according to the changed duty ratio of the pulse width modulation signal. For example, whether the duty ratio of the pulse width modulation signal is smaller than a preset color switching duty ratio x% is judged within a preset color threshold time T0, if yes, the driving mode of the light source module enters a color mixing mode, the color of the light source module is switched once, and if not, a corresponding light source driving signal is output according to the duty ratio of the pulse width modulation signal to adjust the light emitting brightness of the light source module.
In one embodiment, the light emitting parameters of the light source module can be adjusted according to the changed duty ratio of the pulse width modulation signal.
The light emitting parameters of the light source module are determined through the duty ratio of the pulse width modulation signal, the light emitting parameters comprise light emitting color and light emitting brightness, each duty ratio corresponds to one group of light emitting parameters, each group of light emitting parameters comprise one light emitting color parameter and one light emitting brightness parameter, therefore, one group of light emitting parameters can be selected according to the duty ratio to light the light source module by detecting the duty ratio of the pulse width modulation signal, and the light color switching control of the light source module can be realized by only adopting the silicon controlled rectifier.
In a specific application embodiment, each duty ratio range of the pwm signal may correspond to a set of light emitting parameters, for example, the duty ratio of the pwm signal is duty, each duty ratio range corresponds to a combination of color and brightness, when x1% > duty > 0, the color of the light source module is set to C0, the brightness of the light source module is set to L0, when x2% > duty > x1%, the color of the light source module is set to C1, the brightness of the light source module is set to L1, when x3% > duty > x2%, the color of the light source module is set to C2, the brightness of the light source module is set to L2, and so on, when 100% > duty > xn%, the color of the light source module is set to Cn, the brightness of the light source module is set to Ln, wherein C1, C2, \\ 8230, cn, and other colors may be repeated or may be represented as n different colors, L1, L2, \\\\ 82308230, ln, and other brightness may be represented as n different brightness.
In one embodiment, referring to fig. 3, after the switching of the color of the light source module and the driving of the light source module to light the switched color, steps S41 and S42 are further included.
In step S41, the duty ratio of the pwm signal is detected, and when the duty ratio of the pwm signal varies, it is determined whether the duty ratio of the pwm signal reaches a preset color switching duty ratio within a preset color switching threshold time.
In this embodiment, if the duty ratio of the pulse width modulation signal reaches the preset color switching duty ratio within the preset color switching threshold time, the driving mode of the light source module enters the color mixing mode. And after the driving mode of the light source module enters the color mixing mode, switching the light color of the light source module to the next light color, detecting and judging the duty ratio of the pulse width modulation signal again, judging whether the duty ratio of the pulse width modulation signal reaches the preset color switching duty ratio again within the preset color switching threshold time, and so on until the duty ratio of the pulse width modulation signal is smaller than the preset color switching duty ratio within the preset color switching threshold time.
In step S42, if yes, switching the color of the light source module, and driving the light source module to light up with the switched color; if not, the brightness of the light source module is adjusted according to the duty ratio of the changed pulse width modulation signal.
In this embodiment, if the duty ratio of the pulse width modulation signal reaches the preset color switching duty ratio again within the preset color switching threshold time after the light source module switches the light color once, the light color of the light source module is switched to the next light color at this time.
In one embodiment, referring to fig. 4, in step S30, the adjusting the light emitting parameters of the light source module according to the varied duty ratio of the pulse width modulation signal includes step S31 and step S32.
In step S31, the operating brightness value of the light source module is determined according to the changed duty ratio of the pwm signal.
In step S32, a light source driving signal is generated according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.
In this embodiment, if the duty ratio of the pwm signal is smaller than the preset color switching duty ratio within the preset color switching threshold time, the driving mode of the light source module enters the dimming mode, the duty ratio of the pwm signal after the change can determine the working brightness value of the light source module, and then the corresponding light source driving signal can be generated according to the working brightness value, so as to drive the light source module to be turned on at the brightness corresponding to the working brightness value.
In one embodiment, in step S31, the determining the brightness value of the light source module according to the varied duty ratio of the pwm signal includes: and inquiring a brightness value corresponding to the duty ratio from a preset duty ratio and brightness value relation table according to the changed duty ratio of the pulse width modulation signal, and taking the brightness value as the working brightness value.
In a preset duty ratio and brightness value relation table, duty ratios of pulse width modulation signals correspond to brightness values of the light source modules one by one, the brightness values corresponding to the duty ratios are inquired from the preset duty ratio and brightness value relation table according to the duty ratios of the changed pulse width modulation signals, and the brightness values are used as working brightness values of the light source modules, so that brightness adjustment of the light source modules is achieved.
In one embodiment, if the duty ratio of the pwm signal is not changed, the light source driving signal is output with the current duty ratio to drive the light source module to light with the current color and brightness.
The embodiment of the application further provides a silicon controlled rectifier dimming and color mixing method, and referring to fig. 5, the silicon controlled rectifier dimming and color mixing method comprises a step S61, a step S62 and a step S63.
In step S61, a chopper signal output by the thyristor is obtained, and the chopper signal is converted into a corresponding pulse width modulation signal.
In this embodiment, the thyristor performs chopping processing on the input voltage waveform, and converts the obtained chopped signal into a pulse width modulation signal.
In step S62, detecting a duty ratio of the pulse width modulation signal, and determining a light emitting parameter of the light source module according to the duty ratio of the pulse width modulation signal, where the light emitting parameter includes a light emitting color and a light emitting brightness.
In this embodiment, the light emitting parameters of the light source module are determined by the duty ratio of the pulse width modulation signal, where the light emitting parameters include light emitting color and light emitting brightness, each duty ratio corresponds to a group of light emitting parameters, and each group of light emitting parameters includes a light emitting color parameter and a light emitting brightness parameter.
In step S63, the light source module is driven to light according to the light emitting parameters.
In a specific application embodiment, each duty ratio range of the pwm signal may correspond to a set of light emitting parameters, for example, the duty ratio of the pwm signal is duty, each duty ratio range corresponds to a combination of color and brightness, when x1% > duty > 0, the color of the light source module is set to C0, the brightness of the light source module is set to L0, when x2% > duty > x1%, the color of the light source module is set to C1, the brightness of the light source module is set to L1, when x3% > duty > x2%, the color of the light source module is set to C2, the brightness of the light source module is set to L2, and so on, when 100% > duty > xn%, the color of the light source module is set to Cn, the brightness of the light source module is set to Ln, wherein C1, C2, \\ 8230, cn, and other colors may be repeated or may be represented as n different colors, L1, L2, \\\\ 82308230, ln, and other brightness may be represented as n different brightness.
The embodiment of this application still provides a silicon controlled rectifier mixing of colors device 40 of adjusting luminance, silicon controlled rectifier mixing of colors device 40 includes: a signal conversion unit 41, a detection unit 42, and a drive unit 43.
Specifically, the signal conversion unit 41 is configured to obtain a chopper signal output by the thyristor, and convert the chopper signal into a corresponding pulse width modulation signal; the detecting unit 42 is configured to determine whether the duty ratio of the pwm signal reaches a preset switching duty ratio within a preset threshold time after the duty ratio of the pwm signal changes; the driving unit 43 is configured to switch the color of the light source module when the duty ratio of the pwm signal reaches a preset switching duty ratio within a preset threshold time, drive the light source module to light up with the switched color, and adjust the brightness of the light source module according to the changed duty ratio of the pwm signal when the duty ratio of the pwm signal does not reach the preset switching duty ratio within the preset threshold time.
In this embodiment, the thyristor chops an input voltage waveform, the signal conversion unit 41 converts the obtained chopped signal into a pulse width modulation signal, and the detection unit 42 determines the phase angle of the thyristor by detecting the duty ratio of the pulse width modulation signal, where the duty ratio of the pulse width modulation signal corresponds to the phase angle of the thyristor. Therefore, the dimming and color-mixing mode of the light source module can be determined through the duty ratio of the pulse width modulation signal, the dimming and color-mixing mode of the light source module can comprise a dimming mode and a color-mixing mode, the dimming mode is to perform chopping processing on the input voltage based on the duty ratio of the pulse width modulation signal so as to adjust the brightness of the light source module, and the color-mixing mode is to switch the light color when the pulse width modulation signal reaches the preset condition.
The driving unit 43 determines whether the duty ratio of the pwm signal reaches a preset color switching duty ratio within a preset color threshold time when the duty ratio of the pwm signal varies, and enters a color mixing mode if the duty ratio of the pwm signal reaches the preset color switching duty ratio within the preset color threshold time, and the color of the light source module is switched once when the condition is met each time, that is, the duty ratio of the pwm signal reaches the preset color switching duty ratio within the preset color threshold time, and the switching sequence may be switched according to the preset sequence of the plurality of light colors, and if the duty ratio of the pwm signal does not reach the preset color switching duty ratio within the preset color threshold time, the light emitting parameters of the light source module are directly adjusted according to the varied duty ratio of the pwm signal. For example, whether the duty ratio of the pulse width modulation signal is smaller than a preset color switching duty ratio x% or not is judged within a preset color threshold time T0, if so, the driving mode of the light source module enters a color mixing mode, the color of the light source module is switched once, and if not, a corresponding light source driving signal is output according to the duty ratio of the pulse width modulation signal to adjust the light emitting brightness of the light source module.
In an embodiment, the driving unit 43 is further configured to determine an operating brightness value of the light source module according to the changed duty ratio of the pulse width modulation signal when the duty ratio of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light at a brightness corresponding to the operating brightness value.
In one embodiment, the driving unit 43 is further configured to output a light source driving signal at a current duty ratio when the duty ratio of the pulse width modulation signal is not changed, so as to drive the light source module to light up at a currently set color and brightness.
In this embodiment, the driving unit 43 drives the light source module to light up in any of the above embodiments.
An embodiment of the present application further provides a lamp, the lamp includes: a light source module; and the control unit is used for executing the silicon controlled dimming and color mixing method to drive the light source module to light.
In an embodiment, fig. 7 is a schematic circuit structure diagram of a driving circuit of a lamp provided in an embodiment of the present application, and referring to fig. 7, the driving circuit includes: a thyristor dimmer 71, a rectifying circuit 72, a filtering circuit 73,
And the silicon controlled dimmer 71 is used for accessing the alternating current and chopping the alternating current by adjusting the phase angle of the alternating current.
The rectifier circuit 72 is configured to perform rectification processing on the chopped voltage signal, and specifically, the rectifier circuit 72 may be a rectifier bridge.
The filter circuit 73 is configured to perform filtering processing on the voltage signal rectified by the rectifier circuit 72, and specifically, the filter circuit 73 may be a pi filter circuit.
A constant voltage control circuit 74 for outputting a constant voltage drive signal based on the voltage signal output from the filter circuit 73. In a specific application, the constant voltage control circuit 74 includes, but is not limited to, a linear dimming circuit, and may be a buck/buck-boost circuit.
The linear dimming circuit 75 outputs a light source driving signal according to the control signal provided by the main control circuit to drive the light source module 76 to light up, and the linear dimming circuit 75 includes but is not limited to linear dimming, and may be a buck/buck-boost circuit.
And a detection circuit 77 for converting the chopper signal of the thyristor into a pulse width modulation signal with the same duty ratio.
The main control circuit 78 is used for executing the steps of the thyristor dimming and toning method according to any of the above embodiments.
The embodiment of the application provides a silicon controlled rectifier dimming and color mixing method, a silicon controlled rectifier dimming and color mixing device and a lamp, wherein a chopping signal output by a silicon controlled rectifier is obtained firstly, the chopping signal is converted into a corresponding pulse width modulation signal, then the duty ratio of the pulse width modulation signal is detected, and when the duty ratio of the pulse width modulation signal changes, whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time is judged, if yes, the color of a light source module is switched, and the light source module is driven to be lightened by the switched color; if not, the light emitting parameters of the light source module are adjusted according to the duty ratio of the changed pulse width modulation signal, so that the switching control of multiple colors can be realized through the adjustment of the silicon controlled rectifier, and the problem that the switching control of multiple light colors cannot be realized through the silicon controlled rectifier is solved.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed device/lamp and method can be implemented in other ways. For example, the above-described device/luminaire embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U.S. disk, removable hard disk, magnetic diskette, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signal, telecommunications signal, and software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. The silicon controlled rectifier dimming and color mixing method is characterized by comprising the following steps:
obtaining a chopping signal output by the silicon controlled rectifier, and converting the chopping signal into a corresponding pulse width modulation signal;
detecting the duty ratio of the pulse width modulation signal, and judging whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time when the duty ratio of the pulse width modulation signal changes;
if so, switching the color of the light source module, and driving the light source module to light up with the switched color;
and if not, adjusting the light emitting parameters of the light source module according to the changed duty ratio of the pulse width modulation signal.
2. The silicon controlled rectifier dimming toning method according to claim 1, wherein after switching the color of the light source module and driving the light source module to light up with the switched color, the method further comprises:
detecting the duty ratio of the pulse width modulation signal, and judging whether the duty ratio of the pulse width modulation signal reaches a preset color switching duty ratio within a preset color switching threshold value time when the duty ratio of the pulse width modulation signal changes;
if so, switching the color of the light source module, and driving the light source module to light up by the switched color;
and if not, adjusting the brightness of the light source module according to the changed duty ratio of the pulse width modulation signal.
3. The silicon controlled rectifier dimming and color mixing method according to claim 1, wherein the adjusting of the light emitting parameters of the light source module according to the varied duty ratio of the pulse width modulation signal comprises:
determining the working brightness value of the light source module according to the duty ratio of the changed pulse width modulation signal;
and generating a light source driving signal according to the brightness value to drive the light source module to light up at a brightness corresponding to the working brightness value.
4. The silicon controlled rectifier dimming and color mixing method according to claim 3, wherein the determining the brightness value of the light source module according to the varied duty ratio of the pulse width modulation signal comprises:
and inquiring a brightness value corresponding to the duty ratio from a preset duty ratio and brightness value relation table according to the changed duty ratio of the pulse width modulation signal, and taking the brightness value as the working brightness value.
5. The silicon controlled rectifier dimming and toning method according to claim 1, wherein if the duty ratio of the pulse width modulation signal is not changed, the light source driving signal is output at the current duty ratio to drive the light source module to be lightened at the current set color and brightness.
6. A silicon controlled rectifier dimming and color mixing method is characterized by comprising the following steps:
obtaining a chopping signal output by the silicon controlled rectifier, and converting the chopping signal into a corresponding pulse width modulation signal;
detecting the duty ratio of the pulse width modulation signal, and determining the light emitting parameters of the light source module according to the duty ratio of the pulse width modulation signal, wherein the light emitting parameters comprise light emitting color and light emitting brightness;
and driving the light source module to light according to the light emitting parameters.
7. The utility model provides a silicon controlled rectifier mixing of colors device of adjusting luminance which characterized in that, silicon controlled rectifier mixing of colors device of adjusting luminance includes:
the signal conversion unit is used for acquiring a chopping signal output by the silicon controlled rectifier and converting the chopping signal into a corresponding pulse width modulation signal;
the detection unit is used for judging whether the duty ratio of the pulse width modulation signal reaches a preset switching duty ratio within a preset threshold value time after the duty ratio of the pulse width modulation signal changes;
and the driving unit is used for switching the color of the light source module when the duty ratio of the pulse width modulation signal reaches a preset switching duty ratio within a preset threshold time, driving the light source module to light up with the switched color, and adjusting the brightness of the light source module according to the changed duty ratio of the pulse width modulation signal when the duty ratio of the pulse width modulation signal does not reach the preset switching duty ratio within the preset threshold time.
8. The silicon controlled rectifier dimming and toning device of claim 7, wherein the driving unit is further configured to determine an operating brightness value of the light source module according to the changed duty ratio of the pulse width modulation signal when the duty ratio of the pulse width modulation signal changes, and generate a light source driving signal according to the brightness value to drive the light source module to light at a brightness corresponding to the operating brightness value.
9. The silicon controlled rectifier dimming and color mixing apparatus of claim 7, wherein the driving unit is further configured to output a light source driving signal at a current duty ratio when the duty ratio of the pulse width modulation signal is not changed, so as to drive the light source module to light up at a current set color and brightness.
10. A light fixture, the light fixture comprising: a light source module; and the control unit is used for executing the silicon controlled rectifier dimming and toning method according to any one of claims 1 to 6 to drive the light source module to light.
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| CN202110434704.XA CN115243425A (en) | 2021-04-22 | 2021-04-22 | Silicon controlled rectifier dimming and color mixing method, silicon controlled rectifier dimming and color mixing device and lamp |
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