CN115119356A - Dynamic synchronization method for light source and LED lamp system - Google Patents

Dynamic synchronization method for light source and LED lamp system Download PDF

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Publication number
CN115119356A
CN115119356A CN202110284967.7A CN202110284967A CN115119356A CN 115119356 A CN115119356 A CN 115119356A CN 202110284967 A CN202110284967 A CN 202110284967A CN 115119356 A CN115119356 A CN 115119356A
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Prior art keywords
light source
color
light
signal
control signal
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马济浩
陈永虎
赵震宇
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Panasonic Manufacturing Beijing Co Ltd
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Panasonic Manufacturing Beijing Co Ltd
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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • 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
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • 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
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention provides a dynamic synchronization method of a light source and an LED lamp system adopting the dynamic synchronization method of the light source. The dynamic synchronization method of the light source comprises a color matching control step S0, wherein the same color matching control signal is simultaneously output to the first light source and the second light source, and the color output of the first light source and the second light source is adjusted; a signal transmitting step S1 of detecting a light emitting color of the second light source by an RGB sensor communicatively connected to the first light source and outputting a color signal of the second light source; a signal analyzing step S2 of analyzing and generating a color control signal associated with the color signal based on the color signal of the second light source; a signal comparison step S3 of comparing the color control signal generated by the analysis in the signal analysis step S2 with the color control signal of the first light source, and determining whether the difference between the two signals exceeds a threshold value; the synchronization adjusting step S4, if the threshold is exceeded, adjusts the color control signal of the first light source to be synchronized with the color control signal of the second light source.

Description

Dynamic synchronization method for light source and LED lamp system
Technical Field
The invention relates to the technical field of electronics and electric appliances, in particular to a dynamic light source synchronization method and an LED lamp system adopting the same.
Background
With the rapid development of modern science and technology and the diversification of application scenes, the functions of the LED lamp in life and work are not limited to simple lighting effects, and the color of the lamp is not only a single color, but also can be changed according to the requirements on the lighting effect.
The color of the LED lamp can be adjusted by the control circuit of the LED lamp, namely, the color control signals in the control circuit are different, and the colors presented by the LED lamp are different. If the LED lamp needs to realize color mixing, different color control signals are set and output in the control circuit, and then the LED lamp can be realized. In the practical application of two or more than two LED lamps in the same scene, for better color-mixing effect, the colors of the lights of the two or more than two LED lamps are required to be adjusted and changed synchronously. Even if a plurality of color-adjustable LED lamps controlled by different control circuits are powered by the same power supply and simultaneously receive the same control command for color adjustment, the problems that color adjustment among different LED lamps is asynchronous and the color adjustment of a certain LED lamp lags behind that of other LED lamps occur along with the lapse of the service time, the color adjustment effect of the LED lamps is changed, and the application expectation and the use experience feeling of an LED color-adjusting scene are influenced.
Therefore, how to avoid the occurrence of asynchronous color adjustment between different LED lamps and how to correct in time when the asynchronous color adjustment occurs for a plurality of LED lamps controlled by different control sources is a problem to be solved in the art.
Disclosure of Invention
The invention aims to provide a dynamic light source synchronization method, which can compensate the light color adjustment errors among different light sources and realize the color adjustment synchronization among the light sources.
The invention provides a dynamic synchronization method of light sources, which is used for synchronizing the color adjustment of a first light source and a second light source controlled by different control sources and comprises the following steps
A color mixing control step S0 of outputting the same color mixing control signal to the first light source and the second light source at the same time, and adjusting the color output of the first light source and the second light source;
a signal transmitting step S1 of detecting a light emitting color of the second light source by an RGB sensor communicatively connected to the first light source and outputting a color signal of the second light source;
a signal analyzing step S2 of analyzing and generating a color control signal of the second light source associated with the color signal based on the color signal of the second light source;
a signal comparison step S3 of comparing the color control signal of the second light source analyzed and generated in the signal analysis step S2 with the color control signal of the first light source, and determining whether the difference between the two exceeds a threshold value;
in the synchronization adjusting step S4, if the threshold is exceeded, the color control signal of the first light source is adjusted to be synchronized with the color control signal of the second light source.
In the above technical solution, the light source dynamic synchronization method provided by the present invention acquires and detects the light emitting color of the second light source through the RGB sensor, generates the color signal of the second light source based on the detected light emitting color of the second light source, further analyzes the color signal of the second light source to obtain the color control signal, compares the color control signal with the color control signal of the first light source, and adjusts the color control signal of the first light source to synchronize with the color change of the second light source when it is determined that the difference between the color control signal of the first light source and the color control signal of the second light source exceeds the threshold, so that the color adjustment of the first light source is synchronized with the color adjustment of the second light source.
According to the light source dynamic synchronization method, the RGB sensor arranged on the first light source is used for detecting the light emitting color of the second light source, and the color control signal of the second light source is generated through analysis, when the color mixing of the first light source and the second light source is asynchronous, the color control signal of the first light source is adjusted and corrected in a mode of synchronizing the color control signal of the first light source and the color control signal of the second light source, so that the first light source and the second light source are synchronously mixed in color at the next time, the synchronous color mixing effect of the two light sources is kept, and the application scenes of the first light source and the second light source are in line with the expectation and experience of a user.
According to the dynamic synchronization method for the light sources, the color information of the second light source is acquired through the RGB sensor in communication connection with the first light source, and the color control signals of the second light source are analyzed and generated according to the color information, so that even if two light sources are independently controlled by respective power supplies and control circuits, synchronous adjustment can be performed through comparison of the respective color control signals, and color mixing synchronization is achieved. Further, since the color control signal is an electric signal, the synchronization adjustment can be performed more accurately than when the comparison of the color signals is performed directly.
In a preferred technical solution of the present invention, the first light source and the second light source are controlled by different control sources, but the control sources respectively adopted by the first light source and the second light source are a driving circuit and a control chip of the same type. According to the preferred technical scheme, the first light source and the second light source adopt the driving circuit and the control chip which are of the same type, so that the influence of the circuit structure of the light source on the output of the color control signal can be reduced when the same color control signal is applied to the first light source and the second light source. Meanwhile, as the same control chip is adopted, in the signal analysis step, the color control signal of the second light source related to the luminous color can be generated through reverse analysis according to the corresponding relation between the luminous color of the first light source and the color control signal, and excessive redundant data and calculation are not needed.
In the dynamic synchronization method for light sources provided in the technical solution of the present invention, the color control signal of the first light source or the second light source includes at least one of a duty ratio and a frequency of the pulse width modulation wave. According to this preferred embodiment, the color change of the LED lamp as the first light source or the second light source is adjusted according to the pulse width modulation wave in the control circuit. That is, the properties of the pwm wave including the duty ratio and the frequency determine the light emitting colors of the first light source and the second light source, that is, the output waveform of the pwm wave and the color of the LED light are related according to the preset color-tuning curve. Therefore, the waveform of the pulse width modulation wave corresponding to the color can be reversely analyzed through the color of the LED lamp, for example, according to the detected color signal of the second light source, so as to obtain the duty ratio and frequency of the corresponding pulse width modulation wave of the second light source corresponding to the color.
In a preferred technical solution of the present invention, the RGB sensor used in the dynamic synchronization method of the light source is in communication connection with the control chip of the first light source. According to the preferred embodiment, the RGB sensor and the control chip of the first light source are connected by wired or wireless communication, so that the control chip of the first light source can receive the color signal of the second light source transmitted from the RGB sensor, analyze the color signal in the control chip of the first light source to generate a color control signal of the second light source corresponding to the color signal of the second light source, and directly compare the color control signal of the first light source generated by the control chip of the first light source with the color control signal of the first light source and make necessary corrections to achieve synchronous color matching of the first light source and the second light source. At this time, when the first light source and the second light source adopt the identical driving circuit and the identical control chip, since the corresponding relationship between the color control signals of the first light source and the second light source and the light emitting color is identical, the step of analyzing the color signal of the second light source by the control chip of the first light source is simpler, quicker and more accurate.
Preferably, in the dynamic synchronization method for light sources provided in the technical solution of the present invention, the detection of the light-emitting color of the second light source by the RGB sensor is performed once at regular time intervals. For example, when the time interval is 1 second or 1 day or 1 week, that is, after the last detection time is passed for 1 second or 1 day or 1 week, the RGB sensor performs primary detection on the light emitting color of the second light source when the first light source and the second light source are subjected to color matching, and outputs a color signal of the second light source according to the detected light emitting color, so that the color matching of the first light source is synchronized with the second light source through the signal analyzing step, the signal comparing step and the synchronization adjusting step, thereby performing real-time automatic synchronization detection and correction adjustment periodically. The shorter the time interval, the lower the probability that a color difference may occur between the first light source and the second light source, and the shorter the time interval, the shorter the time interval can be adapted to the case where the color of the first light source and the second light source changes at a high frequency.
Of course, the detection of the emission color of the second light source by the RGB sensor may be set to be performed each time the first light source and the second light source are toned, regardless of whether the toning of the first light source and the second light source is performed periodically or randomly. The color signal of the second light source can be output according to the detected luminous color, and then the color mixing of the first light source is synchronous with the second light source through the signal analysis step, the signal comparison step and the synchronous adjustment step, so that the first light source and the second light source are synchronously detected, corrected and adjusted. Similarly, in the light source dynamic synchronization method in the preferred embodiment of the present invention, the detection of the light emitting color of the second light source by the RGB sensor may be triggered manually. The RGB sensor is manually triggered to detect the luminous color of the second light source, when a user finds that the color mixing of the first light source and the second light source is asynchronous, the RGB sensor is manually triggered immediately, then the light dimming operation is performed on the first light source and the second light source to detect the luminous color of the second light source, and a color signal of the second light source is output, so that the color mixing of the first light source and the second light source are synchronous, synchronous detection and correction adjustment can be performed at any time according to actual conditions, and synchronization can be performed only when the user waits for the next periodic detection period.
The above-described periodic and manual triggering detection methods may be used in the LED lamp system alone or in combination.
Preferably, in the method for dynamically synchronizing light sources in the technical solution of the present invention, the number of the first light sources may be more than 2. That is, when color dynamic synchronization is required among a plurality of light sources, only one of the light sources (for example, the second light source) is required to be used as a reference for comparison, and whether one or more of the other light sources are required to be compared and adjusted with the color signal of the one light source, color dynamic synchronization among the plurality of light sources can be realized.
Preferably, in the technical solution of the present invention, when the RGB sensor detects the light emission color of the second light source, the light emission of the first light source is shielded or the light receiving surface of the RGB sensor is disposed toward the second light source. Through above-mentioned structure, the RGB sensor can be absorbed in the colour signal of catching the second light source, avoids influencing the seizure of RGB sensor to the luminous colour of second light source because of the colour of first light source itself to guarantee that the RGB sensor can be accurate the colour signal of output second light source.
In a preferred technical scheme of the invention, the invention also provides an LED lamp system, which comprises
At least two first and second light sources controlled by different control sources;
the control terminal is used for simultaneously controlling the color and light modulation of the first light source and the second light source;
an RGB sensor communicatively connected to one of the first light source or the second light source and capable of detecting a light emission color of the other of the first light source or the second light source;
the LED lamp system can operate any one of the light source dynamic synchronization methods, and the light source dynamic synchronization method can avoid the occurrence of asynchronous color mixing between the first light source and the second light source and can correct the asynchronous color mixing in time.
Preferably, in the technical solution of the present invention, the RGB sensor adopted in the LED lamp system is connected to the first light source or the second light source in a wired connection and/or a wireless connection. The wired and wireless connection modes can effectively transmit the related information of the first light source or the second light source detected by the RGB sensor in time, and in practical application, a user can select the connection mode according to requirements and the circuit structure, and no more limitation is made.
Drawings
Fig. 1 is a schematic flowchart of a dynamic synchronization method for light sources according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an LED lamp system according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an LED lamp system provided in the third embodiment of the present invention;
fig. 4 is a schematic structural diagram of another LED lamp system provided in the third embodiment of the present invention.
Description of reference numerals: 1-a first light source, 11-a control chip, 2-a second light source, 3-an RGB sensor, 31-a light receiving surface and 4-an LED lamp system.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
It should be noted that in the description of the present invention, terms indicating positional relationships such as "outer", "inner", "upper", "lower", "front", "rear", and the like are based on directions or positional relationships shown in the drawings, which are merely for facilitating a person skilled in the art to more clearly understand the present invention, and do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Example one
As shown in FIG. 1, an embodiment of the present invention provides a dynamic synchronization method for light sources, which is used for synchronizing color adjustments of a first light source and a second light source controlled by different control sources, including
A color-mixing control step S0 for outputting the same color-mixing control signal to the first light source and the second light source simultaneously, and adjusting the color output of the first light source and the second light source;
a signal transmitting step S1 of detecting a light emitting color of the second light source by an RGB sensor communicatively connected to the first light source and outputting a color signal of the second light source;
a signal analyzing step S2 of analyzing and generating a color control signal of the second light source associated with the color signal based on the color signal of the second light source;
a signal comparison step S3 of comparing the color control signal of the second light source analyzed and generated in the signal analysis step S2 with the color control signal of the first light source, and determining whether the difference between the two exceeds a threshold value;
in the synchronization adjusting step S4, if the threshold is exceeded, the color control signal of the first light source is adjusted to be synchronized with the color control signal of the second light source.
As shown in fig. 2, the hardware configuration for executing the dynamic synchronization method of the light source of the present embodiment includes a first light source 1 and a second light source 2 which are independent of each other, and an RGB sensor 3 communicatively connected to the first light source 1.
For example, in the color adjusting step S0, the same color adjusting control signal is simultaneously outputted to the first light source and the second light source, so that the color outputs of the first light source and the second light source are in a mode of sequentially circulating three color lights of "red light for 3 seconds, green light for 4 seconds, and blue light for 5 seconds", and the first light source and the second light source are simultaneously turned on. In addition, the power supply of the first light source and the second light source can be various power supplies which can provide electric energy for the light sources, such as lithium batteries, dry batteries, rectification power supplies and the like.
In the signal transmitting step S1, the RGB sensor is used as a color sensor, and compares the collected light emitted by the second light source with a preset reference color to determine the color signal of the second light source.
The RGB sensor is not particularly limited in form, and can be configured to filter red, green, and blue colors by installing color filters, and then transmit color information to a microcontroller or other type of digital processor through an amplifier and an a/D converter to output color signals. It is also possible to use an integrated light-to-voltage converter to output the color signal by passing the color information directly through a color filter, amplifier, a/D converter, without separating the three colors, to a microcontroller or other type of digital processor for digital processing. Or may be an integrated light-to-frequency conversion, converting the luminous color intensity of the second light source directly into a pulse sequence.
Then, in the signal analyzing step S2, the color signal output from the RGB color sensor is converted into a color control signal, and the color control signal is an electrical signal as compared with an optical signal, so that the contrast analysis can be performed more easily and accurately. In the signal analyzing step S2, the color signal only needs to be converted into the color control signal for further analysis, and the conversion method is not limited. For example, the received color signal may be subjected to a corresponding lookup with a preset color signal-color control signal association table, and then the color control signal corresponding to the color signal is determined by parsing.
Finally, in a signal comparison step S3, comparing the analytically determined color control signal of the second light source with the color control signal of the first light source, and determining whether the difference between the two exceeds a threshold; if the color of the first light source is not in excess of the threshold value, the color of the first light source is adjusted synchronously with the color of the second light source, and no further action is needed; in the synchronization adjusting step S4, if the threshold is exceeded, the color control signal of the first light source is adjusted to be synchronized with the color control signal of the second light source. So that the color changes of the first and second light sources can be synchronized when the first and second light sources are toned the next time. In the signal comparison step S3, the color control signal of the first light source connected to the RGB sensor is always adjusted so as to be synchronized with the color control signal of the second light source obtained by the light emission analysis of the second light source received by the RGB sensor. The application scenes of the first light source and the second light source are ensured to be in accordance with the expectation and experience of the user.
In the signal comparison step S3, the color control signal of the second light source is compared with the color control signal of the first light source, and whether the difference between the two exceeds a threshold value is determined. The threshold is generally a preset frequency and/or duty ratio difference of the color control signal of the second light source, and may be preset appropriately according to an application scenario of the first light source and the second light source, and is not particularly limited.
When the light source is single-chip color-mixing, the signal comparing step S3 compares the color control signal of the single chip, and corrects the frequency difference to be, for example, 10Hz, that is, the frequency difference between the color control signal of the second light source and the color control signal of the first light source exceeds 10Hz, according to whether the difference of the waveforms of the color control signal of the single chip exceeds the threshold. When the light sources are RGB tri-color lights, the signal comparison step S3 needs to compare the waveforms of the color control signals corresponding to the red, green and blue colors respectively, and the difference exceeds the threshold, and still, with the frequency difference being, for example, 10Hz, it needs to determine whether the frequency difference between the color control signal of the second light source corresponding to the red, green and blue colors and the color control signal of the first light source exceeds 10Hz, and correct the color control signal corresponding to the color with the frequency difference exceeding 10 Hz.
In the dynamic light source synchronization method in this embodiment, by performing the color mixing control step S0, the signal transmission step S1, the signal analysis step S2, the signal comparison step S3, and the synchronization adjustment step S4, when the first light source and the second light source are subjected to color mixing, the RGB sensor detects and transmits the color signal of the second light source, the color signal of the second light source is further analyzed to obtain the color control signal of the second light source, the color control signal is compared with the color control signal of the first light source, and the color control signal of the first light source is synchronized with the color control signal of the second light source according to the result of the threshold determination.
According to the dynamic light source synchronization method, the situation that the color change is asynchronous when the first light source and the second light source are in color mixing can be avoided, and correction can be performed after the color change is asynchronous. Compared with the direct comparison of the color signals, the color control signal is more accurate and visual, and is convenient for subsequent synchronous adjustment.
Preferably, in the first embodiment of the present invention, the first light source and the second light source are controlled by different power sources, but the power sources of the first light source and the second light source use the same driving circuit and control chip. Because the same control chip is used, in the signal analyzing step S2, the color control signal of the second light source associated with the light-emitting color can be generated by reverse analysis according to the corresponding relationship between the light-emitting color preset in the control chip of the first light source and the color control signal, without excessive redundant data and calculation. And the same drive circuit and control chip can make nearly identical reaction to the same toning control signal and color control signal, and output nearly identical light. The light emitted by the two light sources can be kept highly consistent when the first light source and the second light source start to be started, and the occurrence of the color difference between the two light sources is avoided as much as possible; and when synchronous compensation is carried out according to the color control signal of the second light source, the consistency of the corrected color of the first light source and the color of the second light source can be kept.
In a first embodiment of the present invention, the color control signal of the first light source or the second light source includes at least one of a duty ratio and a frequency of a pulse width modulated wave (PWM). The first light source and the second light source which are used as the LED lamp carry out color adjustment on the first light source and the second light source according to the pulse width modulation wave in the control circuit of the LED lamp as a color adjustment signal. That is, the properties of the pwm wave including the duty ratio and the frequency determine the light emitting colors of the first light source and the second light source, that is, the output waveform of the pwm wave and the color of the LED light are related according to the preset color modulation curve. Therefore, the waveform of the pulse width modulation wave corresponding to the color can be reversely analyzed through the detected color signal of the second light source, so as to obtain the duty ratio and the frequency of the corresponding pulse width modulation wave of the second light source corresponding to the color. The duty ratio and frequency of the pulse modulation wave are generally required to be adjusted simultaneously to achieve synchronization, while when one of the duty ratio and frequency of the pulse modulation wave of the two light sources is the same, only the other one needs to be adjusted correspondingly to achieve color synchronization of the two light sources.
In addition, in the signal comparison step S3, after the difference between the duty ratio and/or the frequency of the color control signal of the first light source and the color control signal of the second light source is used as the threshold value for comparison, the duty ratio or the frequency of the color control signal of the first light source is adjusted to achieve the color matching synchronization of the first light source and the second light source, and the technical effects of the present invention can also be achieved.
As shown in fig. 2, preferably, in the first embodiment of the present invention, the RGB sensor 3 is communicatively connected to the control chip 11 of the first light source 1, and the RGB sensor 3 transmits the color control signal of the second light source 2 to the control chip 11 of the first light source 1. Here, the data transmission between the RGB sensor 3 and the control chip 11 of the first light source 1 may be realized by an electrical element such as a direct external interface or a lead wire, or may be transmitted wirelessly by bluetooth or the like.
Furthermore, in the first embodiment, the light receiving surface 31 of the RGB sensor 3 faces the second light source 2 and faces away from the first light source 1, which can avoid the influence of the light emitted by the first light source 1 on the RGB sensor 3, so that the color signal received by the RGB sensor 3 only includes the color signal emitted by the second light source 2. In addition, the light emitted by the first light source 1 to the RGB sensor 3 can be shielded in other ways or the light emitted by the first light source 1 can be directly shielded by the RGB sensor 3, so that errors caused by interference factors can be reduced.
Example two
In the second embodiment of the present invention, the detection of the light emitting color of the second light source 2 by the RGB sensor 3 is performed once at regular intervals, and the structure and the operation manner of other elements are the same as those in the first embodiment, and are not described herein again.
For example, the color outputs of the first light source 1 and the second light source 2 are in a mode in which "red light 3 seconds, green light 4 seconds, and blue light 5 seconds" are continuously and sequentially circulated. It may be set that the RGB sensor 3 detects the light emission color of the second light source 2 once every 1 second. Therefore, if the time lag of color change occurs in the red light-green light-blue light cyclic toning process, the time lag can be found and corrected within 1 second at most. It follows that the shorter the interval, the shorter the time during which the colour change time lag may occur and persist. Accordingly, if the time interval is shortened to the order of milliseconds or real-time detection without time interval, even if the color change time lag occurs, the color change time lag is corrected within several milliseconds or in real time, so that human eyes can hardly perceive the color change time lag, and a user can see that the color change time lag does not exist between the light sources, and the color change can be adapted to the high-frequency color change of the first light source 1 and the second light source 2. In addition, the time intervals herein are not necessarily absolutely the same time, and may be a time interval mode that is flexibly changed into a first time of 5 seconds, a second time of 3 seconds, and a third time of 10 seconds.
Preferably, in the second embodiment of the present invention, the detection of the light emitting color of the second light source 2 by the RGB sensor 3 is a manual trigger method. Under the condition that the first light source 1 and the second light source 2 are not needed to be synchronized in real time, the time interval does not need to be set for detection, only when a user finds that the color mixing of the first light source 1 and the second light source 2 is asynchronous, a manual trigger signal is sent to start the RGB sensor 3, then the light dimming operation is carried out on the first light source 1 and the second light source 2 to detect the light emitting color of the second light source 2 and output the color signal of the second light source 2, so that the color mixing of the first light source 1 and the color mixing of the second light source 2 are synchronous. According to the preferred embodiment, the first light source 1 and the second light source 2 can be synchronized at any time when needed, the RGB sensor 3 is not required to frequently carry out detection and signal transmission, the power consumption of the RGB sensor 3 is reduced, and the method is economical.
The two trigger synchronization methods are not contradictory, and may be used alternatively or in combination. For example, if the time interval of the timing trigger mechanism is 5 seconds, the RGB sensor 3 may be triggered and detected 5 th, 10 th, 15 th, and 20 th seconds after the first light source 1 and the second light source 2 are turned on, and the user may manually trigger the RGB sensor 3 for synchronization such as 8 th second during this time.
EXAMPLE III
The third embodiment of the present invention is an implementation mode further optimized on the basis of the first and second embodiments. As shown in fig. 3, in this embodiment, the number of the first light sources 1 may be more than 2, and the structures and operation modes of other elements, which are connected to the RGB sensor 3 through wireless communication (or wired), of the control chips 11 of the first light sources 1 are the same as those of the first embodiment, and are not described herein again.
When color dynamic synchronization is required among a plurality of light sources, only one of the light sources (the second light source 2) is required to be used as a reference for comparison, the second light source 2 does not need to be subjected to color correction and adjustment, and no matter the other light sources, the plurality of first light sources 1 only need to be compared with color signals of the second light source 2, and color dynamic synchronization among the plurality of light sources can be realized by synchronizing the color signals of the second light source 2.
Furthermore, since each RGB sensor 3 has an upper transmission limit, it is not able to synchronously and stably transmit signals to each first light source 1 when there are many light sources requiring color dynamic synchronization. Thus, as shown in fig. 4, the control chip 11 of each first light source 1 may be connected to the separate RGB sensor 3, respectively, so that each first light source 1 can accurately and timely receive the color control signal of the second light source 2. And the control chips 11 of the 3 first light sources 1 communicate with each other, so as to compare and adjust the color control signals of the respective second light sources 2, that is, the color control signals of the respective second light sources 2 are different, and perform compromise adjustment, so as to further ensure the accuracy of color dynamic synchronization. If the duty ratio differences found by the control chip 11 of the 3 first light sources in fig. 4 are 8%, 10%, and 12%, respectively, the correction adjustment is performed with a compromise correction scheme, i.e., with a duty ratio difference of 10%.
In addition, the connection structure between the RGB sensor 3 and the first light source 1 only needs to be able to realize that each first light source 1 can accurately and timely receive the color control signal of the second light source 2 transmitted from the RGB sensor 3, and there is no other requirement. In practical applications, the cost and the requirement of color dynamic synchronization can be considered, for example, each RGB sensor 3 is connected to 2 first light sources 1, each RGB sensor 3 is connected to 3 first light sources 1, and the like.
Example four
As shown in fig. 2, 3, and 4, a fourth embodiment of the present invention further provides an LED lamp system 4, which includes
At least two first 1 and second 2 light sources controlled by different control sources;
the control chip 11 of the first light source performs a signal analyzing step S2 for analyzing and generating a color control signal of the second light source 2 associated with the color signal of the second light source 2; a signal comparison step S3 of comparing the color control signal with the color control signal of the first light source 1 and determining whether the difference between the two exceeds a threshold value; a synchronization adjustment step S4 of adjusting the color control signal of the first light source 1 to be synchronized with the color control signal of the second light source 2 if the threshold is exceeded;
and a control terminal (not shown) performing the toning control step S0 while outputting the same dimming control signal to the first and second light sources 1 and 2. And the form of the control terminal (not shown) is not limited, and the color mixing can be controlled by a switch, a remote controller, a control program, a terminal APP and the like;
an RGB sensor 3 communicatively connected to one of the first light source 1 or the second light source 2 and capable of detecting a light emission color of the other of the first light source 1 or the second light source 2;
the LED lamp system 4 can operate any one of the light source dynamic synchronization methods in the above embodiments, and by the above light source dynamic synchronization method, the occurrence of unsynchronized color adjustment between light sources is avoided, and correction is performed when the unsynchronized color occurs.
Preferably, in the present embodiment, the RGB sensor 3 adopted in the LED lamp system 4 is connected to the first light source 1 or the second light source 2 in a wired and/or wireless manner. The wired and wireless connection modes can effectively transmit the relevant information of the light source in time, and in practical application, a user can freely select the light source according to the requirement and the circuit structure. Further, the signal analyzing step S2 and the signal comparing step S3 may be performed by a separate chip connected to the RGB sensor 3, and may be selected according to the circuit configuration.
Reference throughout this specification to "an embodiment" means that a particular feature, structure, function, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment of the invention. Furthermore, the particular features, structures, functions, or characteristics may be combined in any suitable manner in one or more embodiments. For example, the first embodiment may be combined with the second embodiment as long as the two embodiments are not mutually exclusive.
So far, the technical solutions of the present invention have been described with reference to the accompanying drawings, but it is obvious to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A method for dynamic synchronization of light sources for synchronizing color adjustments of a first light source and a second light source controlled by different control sources, comprising
A color matching control step S0 of outputting the same color matching control signal to the first light source and the second light source at the same time, and adjusting color outputs of the first light source and the second light source;
a signal transmitting step S1, in which an RGB sensor communicatively connected to the first light source detects a light emitting color of the second light source and outputs a color signal of the second light source;
a signal analyzing step S2 of analyzing and generating a color control signal of the second light source associated with the color signal of the second light source based on the color signal of the second light source;
a signal comparison step S3, comparing the color control signal of the second light source analyzed and generated in the signal analysis step S2 with the color control signal of the first light source, and determining whether the difference between the two exceeds a threshold value;
a synchronization adjustment step S4, if the threshold is exceeded, adjusting the color control signal of the first light source to be synchronized with the color control signal of the second light source.
2. The method for dynamic synchronization of light sources of claim 1,
the first light source and the second light source are controlled by different control sources, but the control sources adopted by the first light source and the second light source are drive circuits and control chips of the same type.
3. The method for dynamic synchronization of light sources of claim 1,
the color control signal of the first light source or the second light source includes at least one of a duty ratio and a frequency of a pulse width modulation wave.
4. The method according to claim 2, wherein the RGB sensor is communicatively connected to a control chip of the first light source.
5. The method for dynamic synchronization of light sources according to claim 4, wherein the detection of the lighting color of the second light source by the RGB sensor is performed at regular intervals.
6. The method for dynamic synchronization of light sources according to claim 4, wherein the detection of the lighting color of the second light source by the RGB sensor is triggered manually.
7. The dynamic synchronization method of light sources according to any one of claims 1 to 6,
the number of the first light sources may be 2 or more.
8. The method for dynamic synchronization of light sources of claim 7,
when the RGB sensor detects the light emission color of the second light source, the light emission of the first light source is shielded or the light receiving surface of the RGB sensor faces the second light source.
9. An LED light fixture system comprising
At least two first and second light sources controlled by different control sources;
the control terminal is used for simultaneously controlling the color and light modulation of the first light source and the second light source;
an RGB sensor communicatively coupled to one of the first light source or the second light source and capable of detecting a light emitting color of the other of the first light source or the second light source,
characterized in that the LED luminaire system is capable of running the light source dynamic synchronization method as claimed in any one of claims 1 to 8.
10. The LED lamp system of claim 9,
the communication connection mode of the RGB sensor and the first light source or the second light source is wired connection and/or wireless connection.
CN202110284967.7A 2021-03-17 2021-03-17 Dynamic synchronization method for light source and LED lamp system Pending CN115119356A (en)

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CN202110284967.7A CN115119356A (en) 2021-03-17 2021-03-17 Dynamic synchronization method for light source and LED lamp system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110284967.7A CN115119356A (en) 2021-03-17 2021-03-17 Dynamic synchronization method for light source and LED lamp system

Publications (1)

Publication Number Publication Date
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