CN112584574A - Color temperature adjusting circuit and system - Google Patents
Color temperature adjusting circuit and system Download PDFInfo
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- CN112584574A CN112584574A CN202011475583.5A CN202011475583A CN112584574A CN 112584574 A CN112584574 A CN 112584574A CN 202011475583 A CN202011475583 A CN 202011475583A CN 112584574 A CN112584574 A CN 112584574A
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- 238000010586 diagram Methods 0.000 description 10
- 238000005286 illumination Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
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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
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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
- H05B45/22—Controlling the colour of the light using optical feedback
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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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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Abstract
The application is suitable for the technical field of electronics, provides a color temperature regulating circuit and system and includes input unit, the control unit, drive unit and RGB light source, and the control unit is connected with input unit and drive unit's control end respectively, and drive unit's output and RGB light source are connected. The input unit is used for inputting a target color temperature value and transmitting the target color temperature value to the control unit; the control unit is used for analyzing the target color temperature value, determining a control signal and transmitting the control signal to the driving unit; the driving unit is used for driving the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value. The color temperature adjusting circuit provided by the embodiment can adjust the color temperature according to the target color temperature value input by the user, and the experience of the user is improved.
Description
Technical Field
The application belongs to the technical field of electronics, especially relates to a colour temperature regulating circuit and system.
Background
An LED (Light Emitting Diode) illuminating lamp has the advantages of high lighting efficiency, long service life, environmental protection, and the like, and is widely used. LED color temperature adjustment techniques are also widely used to enhance the user experience. The traditional LED color temperature adjustment adopts an automatic adjustment method, and can only be correspondingly adjusted according to ambient light, but not adjusted according to the requirements of users.
Disclosure of Invention
The embodiment of the application provides a color temperature adjusting circuit and a color temperature adjusting system, which can solve the problem that the traditional color temperature adjusting technology cannot be adjusted according to the requirements of users.
In a first aspect, an embodiment of the present application provides a color temperature adjustment circuit, which includes an input unit, a control unit, a driving unit, and an RGB (Red Green Blue) light source, where the control unit is connected to control ends of the input unit and the driving unit, respectively, and an output end of the driving unit is connected to the RGB light source;
the input unit is used for inputting a target color temperature value and transmitting the target color temperature value to the control unit; the control unit is used for analyzing the target color temperature value, determining a control signal and transmitting the control signal to the driving unit; the driving unit is used for driving the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
In a possible implementation manner of the first aspect, the color temperature adjusting circuit further includes a color temperature collecting unit, and the color temperature collecting unit is connected to the control unit;
the color temperature acquisition unit is used for acquiring an actual color temperature value and transmitting the actual color temperature value to the control unit; the control unit is also used for determining an adjusting signal according to the actual color temperature value and the target color temperature value and transmitting the adjusting signal to the driving unit; the driving unit is used for driving the RGB light source according to the adjusting signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
In a possible implementation manner of the first aspect, the color temperature adjusting circuit further includes an image acquisition unit, and the image acquisition unit is connected to the control unit;
the image acquisition unit is used for acquiring behavior information of a user and transmitting the behavior information to the control unit; the control unit is also used for determining the current adaptive color temperature value of the user according to the behavior information, determining an adjusting signal according to the adaptive color temperature value, and transmitting the adjusting signal to the driving unit; the driving unit is used for driving the RGB light source according to the adjusting signal so as to adjust the color temperature value of the RGB light source to the adaptive color temperature value.
In a possible implementation manner of the first aspect, the color temperature adjusting circuit further includes a voice collecting unit, and the voice collecting unit is connected to the control unit;
the voice acquisition unit is used for acquiring a voice signal of a user and transmitting the voice signal to the control unit; the control unit is also used for extracting the target color temperature value from the voice signal, analyzing the target color temperature value, determining the control signal and transmitting the control signal to the driving unit; the driving unit is used for driving the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
In a possible implementation manner of the first aspect, the color temperature adjusting circuit further includes a wireless transmission unit, and the wireless transmission unit is connected to the control unit;
the control unit is also used for communicating with the mobile terminal through the wireless transmission unit.
In a possible implementation manner of the first aspect, the RGB light source includes a red light source, a green light source, and a blue light source, the red light source is connected to the first output end of the driving unit, the green light source is connected to the second output end of the driving unit, and the blue light source is connected to the third output end of the driving unit.
In a possible implementation manner of the first aspect, the analyzing, by the control unit, the target color temperature value and determining a control signal includes:
the control unit calculates the proportion values of red light, green light and blue light according to the target color temperature value;
and the control unit determines the control signal according to the proportion value of the red light, the green light and the blue light.
In a possible implementation manner of the first aspect, the control signal includes a first PWM signal, a second PWM signal, and a third PWM signal, where the first PWM signal is used to control the red light source, the second PWM signal is used to control the green light source, and the third PWM signal is used to control the blue light source.
In a possible implementation manner of the first aspect, the driving unit is configured to drive the RGB light sources according to the control signal, and includes:
the driving unit correspondingly generates and outputs a first driving current, a second driving current and a third driving current according to the first PWM signal, the second PWM signal and the third PWM signal;
the first output end of the driving unit outputs a first driving current to drive the red light source, the second output end of the driving unit outputs a second driving current to drive the green light source, and the third output end of the driving unit outputs a third driving current to drive the blue light source.
In a second aspect, an embodiment of the present application provides a color temperature adjustment system, including the color temperature adjustment circuit of any one of the first aspects.
Compared with the prior art, the embodiment of the application has the advantages that:
the user inputs a target color temperature value through the input unit, and the control unit analyzes the target color temperature value, determines a control signal and transmits the control signal to the driving unit. The driving unit drives the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value. The color temperature adjusting circuit provided by the embodiment can adjust the color temperature according to the target color temperature value input by the user, and the experience of the user is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application;
FIG. 2 is a schematic block diagram of a color temperature adjustment circuit according to another embodiment of the present application;
FIG. 3 is a schematic block diagram of a color temperature adjustment circuit according to another embodiment of the present application;
FIG. 4 is a schematic block diagram of a color temperature adjustment circuit according to another embodiment of the present application;
fig. 5 is a schematic block diagram of a color temperature adjusting circuit according to another embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in the specification of this application and the appended claims, the term "if" may be interpreted contextually as "when …" or "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Fig. 1 shows a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application. Referring to fig. 1, the color temperature adjusting circuit may include an input unit 101, a control unit 102, a driving unit 103, and an RGB light source 104, wherein the control unit 102 is connected to control terminals of the input unit 101 and the driving unit 103, respectively, and an output terminal of the driving unit 103 is connected to the RGB light source 104.
The input unit 101 is configured to receive an input target color temperature value and transmit the target color temperature value to the control unit 102. The control unit 102 is configured to analyze the target color temperature value, determine a control signal, and transmit the control signal to the driving unit 103. The driving unit 103 is configured to drive the RGB light source according to the control signal to adjust the color temperature value of the RGB light source to a target color temperature value.
Specifically, the user inputs a target color temperature value through the input unit 101, and the input unit 101 transmits the target color temperature value to the control unit 102. The control unit 102 analyzes the target color temperature value, determines a control signal, and transmits the control signal to the driving unit 103. The driving unit 103 drives the RGB light source 104 according to the control signal, and adjusts the color temperature value of the RGB light source 104 to the target color temperature value. The color temperature adjusting circuit provided by the embodiment can adjust the color temperature according to the target color temperature value input by the user, and the experience of the user is improved.
In some embodiments, the RGB light sources 104 may include a red light source, a blue light source, and a green light source. The RGB light source 104 can adjust the illumination intensity of the red light source, the blue light source, and the green light source according to the driving current output by the driving unit 103 to realize the adjustment of the color temperature.
In some embodiments, the method for the control unit 102 to analyze the target color temperature value may include:
in the first step, the control unit 102 calculates the ratio of red light, green light and blue light according to the target color temperature value.
Specifically, since red light, green light, and blue light are three primary colors, adjustment of the color temperature value can be achieved by adjusting the ratio of red light, green light, and blue light. Therefore, the control unit 102 can calculate the ratio of red light, green light and blue light according to the target color temperature value.
Step two, the control unit 102 determines a control signal according to the ratio of the red light, the green light and the blue light.
Specifically, after the ratio of red light, green light, and blue light is determined, a control signal may be generated to control the RGB light source 104 to adjust the color temperature.
Illustratively, the RGB light source 104 may include a red light source connected to the first output terminal of the driving unit 103, a green light source connected to the second output terminal of the driving unit 103, and a blue light source connected to the third output terminal of the driving unit 103. The control signals may include a first PWM signal controlling the red light source, a second PWM signal controlling the green light source, and a third PWM signal controlling the blue light source.
Specifically, the first PWM signal is used to adjust the illumination intensity of the red light source, the second PWM signal is used to adjust the illumination intensity of the green light source, and the third PWM signal is used to adjust the illumination intensity of the blue light source. The driving unit 103 adjusts the ratio of the light emitting intensities of the red light source, the green light source and the blue light source in the RGB light source 104 according to the first PWM signal, the second PWM signal and the third PWM signal, so as to adjust the color temperature.
Illustratively, the driving unit 103 correspondingly generates and outputs a first driving current, a second driving current and a third driving current according to the first PWM signal, the second PWM signal and the third PWM signal. The driving unit 103 outputs a first driving current through the first output terminal to drive the red light source according to the first PWM signal, so as to adjust the illumination intensity of the red light source. The driving unit 103 outputs a second driving current through the second output terminal to drive the green light source according to the second PWM signal, so as to adjust the illumination intensity of the green light source. The driving unit 103 outputs a third driving current through a third output terminal to drive the blue light source according to the third PWM signal, so as to adjust the illumination intensity of the blue light source.
Fig. 2 shows a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application. Referring to fig. 2, the color temperature adjusting circuit may further include a color temperature collecting unit 105, and the color temperature collecting unit 105 is connected to the control unit 102.
Specifically, due to the attenuation of light and the influence of other light sources in the environment, when the RGB light sources 104 emit light at the target color temperature, the actual color temperature value in the environment is not necessarily equal to the target color temperature value. Therefore, the actual color temperature value in the environment needs to be collected, and then the RGB light source 104 is adjusted according to the actual color temperature value and the target color temperature value, so as to ensure that the actual color temperature value in the environment is equal to the target color temperature value.
The color temperature collecting unit 105 is configured to collect an actual color temperature value and transmit the actual color temperature value to the control unit 102. The control unit 102 determines an adjustment signal according to the actual color temperature value and the target color temperature value, and transmits the adjustment signal to the driving unit 103. The driving unit 103 drives the RGB light source 104 according to the adjustment signal to adjust the color temperature value of the RGB light source 104 to the target color temperature value.
For example, the color temperature acquisition unit 105 may select a color temperature sensor to acquire an actual color temperature value of the environment. When the actual color temperature value is different from the target color temperature value, the control unit 102 generates an adjustment signal (increasing or decreasing the PWM value), and drives the red light source, the green light source, and the blue light source of the RGB light source 104 to change the illumination intensity, thereby adjusting the color temperature. And finally, the actual color temperature value is the same as the target color temperature value, so that the accurate adjustment of the color temperature is realized.
Fig. 3 shows a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application. Referring to fig. 3, the color temperature adjusting circuit may further include an image capturing unit 106, and the image capturing unit 106 is connected to the control unit 102.
Specifically, the image acquisition unit 106 is configured to acquire behavior information (motion information) of the user and transmit the behavior information to the control unit 102. The control unit 102 determines the current adaptive color temperature value of the user according to the behavior information, determines an adjustment signal according to the adaptive color temperature value, and transmits the adjustment signal to the driving unit 103. The driving unit 103 drives the RGB light source 104 according to the adjustment signal to adjust the color temperature value of the RGB light source 104 to the adapted color temperature value.
Illustratively, the proportion of red light in the adapted color temperature value determined by the control unit 102 increases when the image capturing unit 106 captures that the user is "hugging or kissing". Finally, the proportion of red light in the output light of the RGB light source 104 is increased, so that the environment mapping is more pleasant, and the experience of a user is improved.
Fig. 4 shows a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application. Referring to fig. 4, the color temperature adjusting circuit may further include a voice collecting unit 107, and the voice collecting unit 107 is connected to the control unit 102.
Specifically, the voice collecting unit 107 is configured to collect a voice signal of the user, where the voice signal includes a target color temperature value. Thereafter, the voice acquisition unit 107 transmits the voice signal to the control unit 102. The control unit 102 extracts a target color temperature value in the voice signal. Then, the control unit 102 analyzes the target color temperature value, determines a control signal, and transmits the control signal to the driving unit 103. The driving unit 103 drives the RGB light source 104 according to the control signal to adjust the color temperature value of the RGB light source 104 to the target color temperature value. The user can set the target color temperature value in a voice mode, and the experience of the user is improved.
Fig. 5 shows a schematic block diagram of a color temperature adjusting circuit according to an embodiment of the present application. Referring to fig. 5, the color temperature adjusting circuit may further include a wireless transmission unit 108, and the wireless transmission unit 108 is connected with the control unit 102.
The wireless transmission unit 108 is configured to receive control information including a target color temperature value sent by the mobile terminal, and send the control information to the control unit 102.
For example, the user may input the target color temperature value through a mobile terminal such as a mobile phone or a tablet computer. The control unit 102 receives the target color temperature value transmitted by the mobile terminal through the wireless transmission unit 108. Then, the control unit 102 drives the RGB light source 104 according to the target color temperature value, so as to realize remote control of the color temperature adjusting circuit and improve the user experience.
The embodiment of the application also provides a color temperature adjusting system, which comprises the color temperature adjusting circuit and can realize accurate adjustment of the color temperature value.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting 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. A color temperature adjusting circuit is characterized by comprising an input unit, a control unit, a driving unit and an RGB light source, wherein the control unit is respectively connected with the input unit and the control end of the driving unit, and the output end of the driving unit is connected with the RGB light source;
the input unit is used for inputting a target color temperature value and transmitting the target color temperature value to the control unit; the control unit is used for analyzing the target color temperature value, determining a control signal and transmitting the control signal to the driving unit; the driving unit is used for driving the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
2. The color temperature adjusting circuit according to claim 1, further comprising a color temperature collecting unit connected to the control unit;
the color temperature acquisition unit is used for acquiring an actual color temperature value and transmitting the actual color temperature value to the control unit; the control unit is also used for determining an adjusting signal according to the actual color temperature value and the target color temperature value and transmitting the adjusting signal to the driving unit; the driving unit is used for driving the RGB light source according to the adjusting signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
3. The color temperature adjusting circuit according to claim 1, further comprising an image acquisition unit connected to the control unit;
the image acquisition unit is used for acquiring behavior information of a user and transmitting the behavior information to the control unit; the control unit is also used for determining the current adaptive color temperature value of the user according to the behavior information, determining an adjusting signal according to the adaptive color temperature value, and transmitting the adjusting signal to the driving unit; the driving unit is used for driving the RGB light source according to the adjusting signal so as to adjust the color temperature value of the RGB light source to the adaptive color temperature value.
4. The color temperature adjusting circuit according to claim 1, further comprising a voice collecting unit connected to the control unit;
the voice acquisition unit is used for acquiring a voice signal of a user and transmitting the voice signal to the control unit; the control unit is also used for extracting the target color temperature value from the voice signal, analyzing the target color temperature value, determining the control signal and transmitting the control signal to the driving unit; the driving unit is used for driving the RGB light source according to the control signal so as to adjust the color temperature value of the RGB light source to the target color temperature value.
5. The color temperature adjusting circuit according to claim 1, further comprising a wireless transmission unit connected to the control unit;
the control unit is also used for communicating with the mobile terminal through the wireless transmission unit.
6. The color temperature adjustment circuit according to any one of claims 1 to 5, wherein the RGB light source comprises a red light source, a green light source and a blue light source, the red light source is connected to the first output terminal of the driving unit, the green light source is connected to the second output terminal of the driving unit, and the blue light source is connected to the third output terminal of the driving unit.
7. The color temperature adjustment circuit of claim 6, wherein the control unit resolves the target color temperature value to determine a control signal, comprising:
the control unit calculates the proportion values of red light, green light and blue light according to the target color temperature value;
and the control unit determines the control signal according to the proportion value of the red light, the green light and the blue light.
8. The color temperature adjustment circuit of claim 7, wherein the control signals comprise a first PWM signal, a second PWM signal, and a third PWM signal, wherein the first PWM signal is used to control the red light source, the second PWM signal is used to control the green light source, and the third PWM signal is used to control the blue light source.
9. The color temperature adjustment circuit of claim 8, wherein the driving unit is configured to drive the RGB light sources according to the control signals, and comprises:
the driving unit correspondingly generates and outputs a first driving current, a second driving current and a third driving current according to the first PWM signal, the second PWM signal and the third PWM signal;
the first output end of the driving unit outputs a first driving current to drive the red light source, the second output end of the driving unit outputs a second driving current to drive the green light source, and the third output end of the driving unit outputs a third driving current to drive the blue light source.
10. A color temperature adjusting system comprising the color temperature adjusting circuit according to any one of claims 1 to 9.
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| CN202011475583.5A CN112584574A (en) | 2020-12-15 | 2020-12-15 | Color temperature adjusting circuit and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011475583.5A CN112584574A (en) | 2020-12-15 | 2020-12-15 | Color temperature adjusting circuit and system |
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| CN112584574A true CN112584574A (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113260127A (en) * | 2021-04-30 | 2021-08-13 | 深圳市爱图仕影像器材有限公司 | Color temperature adjusting method, terminal equipment and computer readable storage medium |
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| US20040165001A1 (en) * | 2003-02-21 | 2004-08-26 | Jui-Ming Wang | Color temperature automatic adjusting device and the method for performed the same |
| CN106376123A (en) * | 2016-08-28 | 2017-02-01 | 浙江三森科技股份有限公司 | Controllable intelligent driving power with multiple color temperatures |
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Application publication date: 20210330 |
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