LED color control module based on three primary colors of red, green and blue

Abstract

The utility model provides an LED color control module based on three primary colors of red, green and blue, which relates to the technical field of LED color control, and is characterized in that one side of an instruction control unit is connected with an instruction decoding unit, one side of the instruction decoding unit is connected with a system mode selection unit, and the side surface of the system mode selection unit is connected with an RGB mixed processing unit; one side of the RGB signal generator is connected with an RGB signal source phase sequence generator, the other side of the RGB signal source phase sequence generator is connected with an RGB mixing processing unit, the other side of the RGB PWM signal generator is connected with an RGB mixing processing unit, the side face of the RGB mixing processing unit is sequentially connected with an RGB PWM signal modulation unit, and the other side of the RGB PWM signal modulation unit is connected with an RGB PWM output driving unit. The RGB signal generator and the RGB signal source phase sequence generator carry out driving control of three primary colors of red, green and blue, and display of more than 60,000 colors can be realized by controlling a phase difference sequence between driving signals of the red, green and blue LEDs and through the PWM signal modulation unit of the red, green and blue LEDs.

Description

Technical Field

[0001] The utility model relates to the technical field of LED color control, in particular to an LED color control module based on the three primary colors of red, green and blue. Background Art

[0002] The red, green and blue primary color LED is a low-power, high-brightness, small-sized light-emitting device. It has now been widely used in many products such as urban landscape lights, smart homes, decorative lamps, toys, hotels, and coffee shop scene lamps.

[0003] The existing equipment and devices in the prior art either display a single color and have simple functions, or are expensive and can no longer fully meet the needs of the market. In addition, color control generally uses the brightness or saturation setting of the three primary colors to adjust multiple colors. The adjustment range is not accurate, the color range is small, it is not easy to operate, and the adaptability is not high. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of insufficient color richness and poor adaptability to usage scenarios in the prior art when adjusting color, and to propose an LED color control module based on the phase difference of the three primary colors of red, green and blue.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an LED color control module based on the phase difference of the three primary colors of red, green and blue, comprising an instruction control unit and an RGB signal generator, wherein one side of the instruction control unit is connected to an instruction decoding unit, one side of the instruction decoding unit is connected to a system mode selection unit, and the side of the system mode selection unit is connected to an RGB mixing processing unit; one side of the RGB signal generator is connected to an RGB signal source phase sequence generator, one side of the RGB signal source phase sequence generator is connected to the RGB mixing processing unit, and the other side of the RGB signal source phase sequence generator is connected to the RGB mixing processing unit, and the side of the RGB mixing processing unit is sequentially connected to an RGB PWM signal modulation unit and an RGB PWM output drive unit.

[0006] Preferably, the RGB PWM output drive unit includes a red LED PWM output unit, a green LED PWM output unit and a blue LED PWM output unit.

[0007] Preferably, the red LED PWM output unit, the green LED PWM output unit and the blue LED PWM output unit are electrically connected to the RGB PWM output drive unit (S250) and the red LED PWM output endpoint (S303), the green LED PWM output endpoint (S304), and the blue LED PWM output endpoint (S305) respectively.

[0008] Preferably, the RGB signal generator generates red, green and blue driving signals, and the driving signals generated by the RGB signal generator are electrically connected to the RGB signal source phase sequence generator.

[0009] Preferably, the phase angle of the sine wave generated by the RGB signal source phase sequence generator is 180 degrees, and 180 phase differences can be generated between the mutual driving signals of red, green and blue respectively.

[0010] Preferably, the RGB signal source phase sequence generator includes ordered phase differences and disordered phase differences.

[0011] Preferably, the instruction control unit and the instruction decoding unit are both electrically connected to the system mode selection unit.

[0012] Beneficial Effects

[0013] In the utility model, a system mode selection unit is connected and controlled with modules such as an instruction control unit and an instruction decoding unit, and the driving control of the three primary colors of red, green and blue is carried out through an RGB signal generator and an RGB signal source phase sequence generator. By controlling the phase difference sequence between the red, green and blue LED driving signals and through the PWM signal modulation unit of the red, green and blue LEDs, more than 60,000 color displays can be finally achieved. At the same time, the control of LED lighting, marquee, atmosphere light and application scene mode can be achieved through the system mode selection unit, and the time length of the application scene mode can be adjusted. The brightness and running status of the three primary colors of red, green and blue LED lights can also be configured and controlled respectively. The utility model is suitable for urban landscape lights, smart homes, decorative lamps, toys, scene lamps in hotels and coffee shops, cartoon toys, fantasy night lights, multi-scene atmosphere lights, music scene lamps, stage lights, lighting lamps and equipment, with high color richness, strong scene adaptability and easy adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a planar connection structure diagram of the utility model;

[0015] Figure 2 This is a basic principle diagram of the color realization of the utility model.

[0016] Legend:

[0017] S100, instruction control unit; S110, instruction decoding unit; S120, system mode selection unit; S200, RGB signal generator; S210, RGB signal source phase sequence generator; S220, RGB PWM signal generator; S230, RGB mixing processing unit; S240, RGB PWM signal modulation unit; S250, RGB PWM output driving unit; S300, red LED PWM output unit; S301, green LED PWM output unit; S302, blue LED PWM output unit; S303, red LED PWM output electrical connection terminal; S304, green LED PWM output electrical connection terminal; S305, blue LED PWM output electrical connection terminal. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0019] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:

[0021] Reference Figure 1-2A LED color control module based on red, green and blue primary colors includes an instruction control unit S100 and an RGB mixing processing unit S230, wherein one side of the instruction control unit S100 is connected to an instruction decoding unit S110, one side of the instruction decoding unit S110 is connected to a system mode selection unit S120, a side of the system mode selection unit S120 is connected to an RGB mixing processing unit S230, one side of an RGB signal generator S200 is connected to an RGB signal source phase sequence generator S210, the other side of the RGB signal source phase sequence generator S210 is connected to the RGB mixing processing unit S230, and the side of the RGB mixing processing unit S230 is sequentially connected to an RGB PWM signal modulation unit S240 and an RGB The PWM output drive unit S250, the instruction control unit S100 and the instruction decoding unit S110 are all electrically connected to the system mode selection unit S120, and the system mode selection unit S120 is connected and controlled with the instruction control unit S100, the instruction decoding unit S110 and other modules, and the driving control of the three primary colors of red, green and blue is performed through the RGB signal generator S200 and the RGB signal source phase sequence generator S210. By controlling the phase difference sequence between the red, green and blue LED driving signals and through the PWM signal modulation unit of the red, green and blue LEDs, more than 60,000 color displays can be finally achieved.

[0022] During actual use, after the instruction control unit S100 receives the user's control instruction, it outputs it to the instruction decoding unit S110. After the instruction decoding unit S110 completes the decoding of the instruction, it outputs the control data to the system mode selection unit S120. After the system mode selection unit S120 receives the control data and processes it, it can select the system mode configuration, scene running speed configuration mode, scene running time configuration mode, LED lighting mode, marquee mode, LED light brightness configuration and status control mode, and perform control adjustments.

[0023] When the system mode selection unit S120 is in use, the scene running speed configuration mode, LED lighting mode, marquee mode, LED light brightness configuration and state control mode. When the system is in the scene running time configuration mode, the time length of the scene mode can be adjusted between 0.5s-3min. Specific embodiment 2:

[0025] Reference Figure 1-2 , for the selection of each system mode, the settings are as follows:

[0026] In the system mode configuration state, the scene running speed and scene running time can be configured through the system mode selection unit S120;

[0027] Select and set LED lighting mode, marquee mode, LED light brightness configuration and status control mode;

[0028] In the scene operation speed setting mode, the operation speed of different application scenarios of the system can be configured and set;

[0029] In the scenario running time configuration mode, the running time of different application scenarios of the system can be configured and set;

[0030] In LED lighting mode, the red, blue and green LEDs can be lit at the same time, and according to the principle of three primary colors, RGB will display white;

[0031] The brightness of LEDs is integrated and used as a lighting source. The color temperature can also be adjusted as required.

[0032] In the marquee mode, the red, green and blue LEDs are connected in series so that they light up in turn, presenting a flow phenomenon.

[0033] In the LED light brightness configuration and status control mode, the brightness and status of the red, green, and blue LEDs can be adjusted separately. Specific embodiment three:

[0035] Reference Figure 1-2 , the RGB signal generator S200 generates red, green and blue driving signals, and the driving signals generated by the RGB signal generator S200 are electrically connected to the RGB signal source phase sequence generator S210.

[0036] The RGB PWM output driving unit S250 is electrically connected to the red LED PWM output unit S300, the green LED PWM output unit S301 and the blue LED PWM output unit S302 respectively. The RGB signal source phase sequence generator S210 modulates the PWM duty cycle of the RGB PWM signal generator S220. By changing the duty cycle of the corresponding LED PWM, the brightness of the corresponding LED can be changed, so that the corresponding red, green and blue LEDs can be integrated to present different colors. Specific embodiment four:

[0038] Reference Figure 1-2The phase angle of the sine wave 0π ~ 1π generated by the RGB signal source phase sequence generator S210 is 180 degrees. When calibrated with a phase angle of 1 degree, the phase sequencer can generate 180 phase differences between the mutual driving signals of the red LED, green LED, and blue LED. The expression of the RGB sinusoidal phase marks the phase of the red LED with Pr°, the phase of the green LED with Pg°, and the phase of the blue LED with Pb°.

[0039] When the sinusoidal phase of RGB is described using two-dimensional coordinates, the red LED coordinates may be identified by (Xr, Yr), the green LED coordinates by (Xg, Yg), and the blue LED by (Xb, Yb).

[0040] In the description of the two-dimensional coordinates of the sine, X represents the time of the sine, and Y represents the amplitude of the sine. There are only two types of Y-representing the amplitude of the sine (0, 1); it is used to represent the low level and high level of the PWM output. In this application, in the identifiers describing the phase and phase difference, Prgb, (Xrgb, Yrgb) have the same identification meaning.

[0041] The reason why sine is represented by two-dimensional coordinates instead of a sine function in this application is that in some application scenarios, the limitations of MCU resources (RAM, ROM) prevent the use of complex formulas in the software program, causing the compiled program code to exceed the resource space of the MCU. Specific embodiment five:

[0043] Reference Figure 1-2 , the RGB signal source phase sequence generator S210 includes an ordered phase difference and a disordered phase difference.

[0044] The ordered phase difference is that the phase difference between red, green, and blue is arranged in order

[0045] Such as: Pr(φ10°), Pg(φ20°), Pb(φ30°)

[0046] Or: Pr(φ100°), Pg(φ110°), Pb(φ120°);

[0047] You can also arrange the phases of any two RGB LEDs as follows:

[0048] Pr(φ10°), Pg(φ10°), Pb(φ100°);

[0049] Pr(φ40°), Pb(φ40°), Pg(φ150°);

[0050] Pb(φ70°), Pg(φ70°), Pr(φ100°);

[0051] The disordered phase difference is that the phase difference between red, green, and blue is randomly arranged:

[0052] Such as: Pr(φ20°), Pg(φ90°), Pb(φ175°)

[0053] Or: Pr(φ175°), Pg(φ15°), Pb(φ90°)

[0054] In the present application, the phase difference refers to the difference between RGB and the initial phase angle, and the phase difference between each other refers to the relative phase difference between RGB when they are at the same frequency or different frequencies.

[0055] Similarly, RGB LED can present different LED brightness with different sinusoidal frequencies when the PWM duty cycle is constant.

[0056] The purpose of the ordered phase difference and disordered phase difference is to set the PWM duty ratio of the red, green, and blue LEDs respectively so that after the different brightness of the RGB LEDs are integrated, more different color displays can be achieved;

[0057] The phase difference signal generated by the phase sequence generator is the driving signal generated by the RGB signal generator. Specific embodiment six:

[0059] Reference Figure 1-2 For RGB PWM output driving in different LED power output scenarios, an external power circuit is required to meet the system power requirements.

[0060] In this utility model patent, the concept of phase difference between RGB LEDs refers not only to the phase difference between the sine waves of the red LED, the green LED, and the blue LED, but also to the level (high level / low level) time difference between the driving ports of R, G, and B.

[0061] For example, when the phase difference between the red LED and the green LED is φ15°, there is a 50ms delay between the output level of the green LED drive port and the output level of the red LED drive port.

[0062] The specific delay time between the output levels of the two LED driving ports corresponding to the phase difference between the two LEDs is targeted at different application scenarios;

[0063] In different application scenarios, it is recommended that the delay range between the output levels of the two drive ports be between 50ms and 1000ms. Similarly, the output level of the drive port in the circuit of different application scenarios is represented by a high level or a low level.

[0064] Among them: high level means that when the driving port outputs a high level, the LED is lit;

[0065] Low level means that when the driving port outputs a low level, the LED is lit. Specific embodiment seven:

[0067] Reference Figure 1-2 , between the phase angles of 0π-0.5π, the duty cycle of the PWM shown in S261 increases with the increase of the phase angle of S260, and ultimately the brightness of the red, green, and blue LEDs can be increased respectively with the increase of the phase angle.

[0068] Between the phase angles of 0.5π and 1.0π, the duty cycle of the PWM shown in S261 decreases as the phase angle of S260 decreases, and ultimately the brightness of the red, green, and blue LEDs can be reduced as the phase angle decreases.

[0069] System mode selection refers to the configuration and selection of the system's working mode.

[0070] When selecting the system mode, you can select and set the system scene running speed configuration mode, system scene running time configuration mode, LED lighting mode, marquee mode, LED light brightness configuration and status control mode.

[0071] In the system scenario running speed configuration mode, the running speed can be set between level 1 and level 9;

[0072] In the system scenario running time configuration mode, the running speed can be set between 0.5 seconds and 3 minutes;

[0073] In the system scenario running time configuration mode, the running speed can be set between 0.5 seconds and 3 minutes;

[0074] Select and set the system LED lighting mode, marquee mode, LED light brightness configuration and status control mode.

[0075] In summary:

[0076] The system mode selection unit S120 is connected and controlled with the instruction control unit S100 and the instruction decoding unit S110, and the red, green and blue primary colors are driven and controlled through the RGB signal generator S200 and the RGB signal source phase sequence generator S210. By controlling the phase difference sequence between the red, green and blue LED drive signals and through the PWM signal modulation unit of the red, green and blue LEDs, more than 60,000 color displays can be finally achieved. At the same time, the system mode selection unit S120 can be used to control LED lighting, marquees, application scene modes, and adjust the time length of application scene modes. The brightness and running status of the three primary colors of red, green and blue LED lights can also be configured and controlled respectively. It is suitable for urban landscape lights, smart homes, decorative lamps, toys, scene lamps in hotels and coffee shops, cartoon toys, fantasy night lights, multi-scene atmosphere lights, music scene lamps, stage lights, lighting lamps and equipment, with high color richness, strong scene adaptability and easy adjustment.

[0077] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0078] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An LED color control module based on the three primary colors of red, green and blue, comprising a command control unit (S100) and an RGB signal generator (S200), characterized in that: The instruction control unit (S100) is connected to an instruction decoding unit (S110) on one side, the instruction decoding unit (S110) is connected to a system mode selection unit (S120) on one side, the system mode selection unit (S120) is connected to an RGB mixing processing unit (S230) on one side, the RGB signal generator (S200) is connected to an RGB signal source phase sequence generator (S210) on one side, the RGB signal source phase sequence generator (S210) is connected to the RGB mixing processing unit (S230) on the other side, the RGB signal generator (S200) is connected to the RGB mixing processing unit (S230) on the other side, the RGB mixing processing unit (S230) is sequentially connected to an RGB PWM signal modulation unit (S240) on one side, and the RGB PWM signal modulation unit (S240) is connected to an RGB PWM output driving unit (S250) on the other side.

2. The LED color control module based on the three primary colors of red, green and blue according to claim 1, characterized in that: The RGB PWM output driving unit (S250) includes a red LED PWM output unit (S300), a green LED PWM output unit (S301) and a blue LED PWM output unit (S302).

3. The LED color control module based on the three primary colors of red, green and blue according to claim 2, characterized in that: The red LED PWM output unit (S300), the green LED PWM output unit (S301) and the blue LED PWM output unit (S302) are electrically connected to the corresponding red LED, green LED and blue LED output ends of the RGB PWM output drive unit (S250), respectively.

4. The LED color control module based on the three primary colors of red, green and blue according to claim 1, characterized in that: The RGB signal generator (S200) generates red, green and blue driving signals, and the driving signals generated by the RGB signal generator (S200) are electrically connected to the RGB signal source phase sequence generator (S210).

5. The LED color control module based on the three primary colors of red, green and blue according to claim 4, characterized in that: The phase angle of the sine wave generated by the RGB signal source phase sequence generator (S210) is 180 degrees, and a phase difference of 180° can be generated between the mutual driving signals of red, green and blue respectively.

6. The LED color control module based on the three primary colors of red, green and blue according to claim 1, characterized in that: The RGB signal source phase sequence generator (S210) includes an ordered phase difference and a disordered phase difference.

7. The LED color control module based on the three primary colors of red, green and blue according to claim 1, characterized in that: The instruction control unit (S100) and the instruction decoding unit (S110) are both electrically connected to the system mode selection unit (S120).

8. The LED color control module based on the three primary colors of red, green and blue according to claim 3, characterized in that: The red LED PWM output unit (S300) is electrically connected to the red LED PWM endpoint (S303), the green LED PWM output unit (S301) is electrically connected to the green LED PWM endpoint (S304), and the blue LED PWM output unit (S302) is electrically connected to the green LED PWM endpoint (S305).

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