Multi-color-temperature multi-power adjustable circuit device

Abstract

The utility model discloses a multi-color-temperature multi-power adjustable circuit device, which comprises a rectifying circuit, at least two analog continuous dimming circuits, a color temperature gear setting switch circuit, a brightness adjusting switch circuit and a control circuit, one color temperature gear setting switch circuit and one brightness adjusting switch circuit are respectively connected to the input of the control circuit, the output of the control circuit is respectively connected to the control end of each analog continuous dimming circuit, and the color temperature gear setting switch circuit inputs setting signals with different duty ratios under the same current value to the control circuit. The control circuit outputs setting signals with different duty ratios to each simulation continuous dimming circuit, and the brightness adjusting switch circuit inputs an adjusting signal of current magnitude change under the same duty ratio to the control circuit, so that the control circuit outputs the adjusting signal of current magnitude change under the same duty ratio to each simulation continuous dimming circuit. According to the utility model, the brightness can be adjusted while the color temperature is adjustable, and the LED lamp has the advantages of low current noise and low light stroboflash.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp string control technical field, especially a kind of multi-color temperature multi-power adjustable circuit device. BACKGROUND

[0002] The multi-color temperature switching circuit on the market currently mainly adopts PWM drive control mode to adjust the current size of two groups of LEDs, that is, on two groups or more than two groups of LED lamp string groups, the current of different color temperature lamp string groups is adjusted to realize different color temperature switching through PWM drive control circuit; PWM mode control is to repeatedly switch the control of LED driver, and during enablement (high level or low level), LED has current, and during other time (low level or high level interval), LED lamp is cut off without current; in general, PWM drive control mode is to adjust the current of LED by the different duty cycles of PWM, and the current of LED is changed with the change of duty cycle; due to the switching characteristic of itself, the current flowing through LED is intermittent, so there is relatively large current noise, and LED light has relatively large frequency flicker; large LED frequency flicker brings visual fatigue to naked eye, and also affects the use effect of some optical equipment, so PWM dimming (digital dimming) control to realize color temperature switching has use limitation caused by its deficiency. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art, and provides a kind of multi-color temperature multi-power adjustable circuit device, which realizes adjustable color temperature and adjustable brightness, so that users have more rich function experience, and has the advantages of small current noise and low light frequency flicker, and is more suitable for human visual perception.

[0004] The utility model discloses a kind of multi-color temperature multi-power adjustable circuit device, including rectifier circuit, at least two analog continuous dimming circuit, one color temperature gear setting switch circuit, one brightness adjustment switch circuit and control circuit;The input of the rectifier circuit is connected to the fire line and zero line of alternating current, and the output of the rectifier circuit is respectively connected to each analog continuous dimming circuit, and each analog continuous dimming circuit is respectively connected to corresponding lamp string circuit;The input of one color temperature gear setting switch circuit and one brightness adjustment switch circuit is respectively connected to the control circuit, and the output of the control circuit is respectively connected to the control end of each analog continuous dimming circuit, and the color temperature gear setting switch circuit inputs different duty cycles setting signal under the same current value to control circuit, so that control circuit outputs different duty cycles setting signal to each analog continuous dimming circuit, and the brightness adjustment switch circuit inputs the adjustment signal of the current size change under the same duty cycle to control circuit, so that control circuit outputs the adjustment signal of the current size change under the same duty cycle to each analog continuous dimming circuit.

[0005] The control circuit is an MCU control circuit made of an MCU chip.

[0006] Each of the at least two analog continuous dimming circuits is integrated in a corresponding IC chip.

[0007] All of the at least two analog continuous dimming circuits are integrated in the same IC chip.

[0008] All of the at least two analog continuous dimming circuits are integrated in at least two IC chips.

[0009] The lamp string circuit is two, the analog continuous dimming circuit is multiple, and the multiple analog continuous dimming circuits output dimming signals to the two lamp string circuits, respectively.

[0010] The analog continuous dimming circuit further integrates a constant current control circuit.

[0011] The color temperature position setting switch circuit and the brightness adjustment switch circuit are adjustable electronic components or mechanical switches.

[0012] The color temperature position setting switch circuit and the brightness adjustment switch circuit are potentiometers, toggle switches, rotary switches or endless rotary switches.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses at least two analog continuous dimming circuits to control the current of the corresponding different color temperature lamp string circuit, adjusts the current ratio between different lamp string circuits under the condition that the total current of multiple lamp string circuits is invariable, makes the light of different color temperatures mix in a certain ratio to realize the switching of different position color temperatures, and because the current of the analog continuous dimming circuit through the lamp string circuit is linear and continuous, so it has the advantages of small current noise and low light frequency flicker, and is more suitable for human visual perception.

[0015] The utility model discloses at least two analog continuous dimming circuits to control the current of the corresponding different color temperature lamp string circuit, adjusts the current ratio between different lamp string circuits under the condition that the total current of multiple lamp string circuits is invariable, makes the light of different color temperatures mix in a certain ratio to realize the switching of different position color temperatures, and because the current of the analog continuous dimming circuit through the lamp string circuit is linear and continuous, so it has the advantages of small current noise and low light frequency flicker, and is more suitable for human visual perception.

[0015] The utility model discloses at least two analog continuous dimming circuits to control the current of the corresponding different color temperature lamp string circuit, adjusts the current ratio between different lamp string circuits under the condition that the total current of multiple lamp string circuits is invariable, makes the light of different color temperatures mix in a certain ratio to realize the switching of different position color temperatures, and because the current of the analog continuous dimming circuit through the lamp string circuit is linear and continuous, so it has the advantages of small current noise and low light frequency flicker, and is more suitable for human visual perception.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the circuit schematic diagram of the embodiment one of the utility model;

[0017] Figure 2 is the circuit schematic diagram of the embodiment two of the utility model;

[0018] Figure 3 is the circuit schematic diagram of the embodiment three of the utility model;

[0019] Figure 4 is the circuit schematic diagram of the embodiment four of the utility model;

[0020] Figure 5 is the circuit schematic diagram of the embodiment five of the utility model. DETAILED DESCRIPTION

[0021] Embodiment one

[0022] Referring to Figure 1 the utility model discloses a multi-color temperature multi-power adjustable circuit device, including rectifier circuit 1, at least two analog continuous light modulation circuit, a color temperature gear setting switch circuit 3, a luminance adjusting switch circuit 4 and control circuit 5, specifically, the number of analog continuous light modulation circuit is two, namely Figure 1 analog continuous light modulation circuit 21,22 in the rectifier circuit 1 is connected to the fire line 6 and zero line 7 of alternating current, and the output of rectifier circuit 1 is connected to analog continuous light modulation circuit 21,22 respectively, and analog continuous light modulation circuit 21,22 is connected to corresponding lamp string circuit 81,82 respectively;The input of the color temperature gear setting switch circuit 2 and the luminance adjusting switch circuit 3 is connected to the control circuit 5 respectively, and the output of the control circuit 5 is connected to the control end of analog continuous light modulation circuit 21,22 respectively, the color temperature gear setting switch circuit 2 inputs the setting signal of different duty cycles under the same current value to control circuit 5, makes control circuit 5 output the setting signal of different duty cycles to analog continuous light modulation circuit 21,22, and the luminance adjusting switch circuit 3 inputs the adjusting signal of current size change under the same duty cycle to control circuit 5, makes control circuit 5 output the adjusting signal of current size change under the same duty cycle to analog continuous light modulation circuit 21,22.

[0023] In the embodiment, the control circuit 5 is MCU control circuit made of MCU chip, wherein the control program in the MCU control circuit is written by using existing mature software.

[0024] In the embodiment, each analog continuous light modulation circuit is integrated in a corresponding IC chip in the two analog continuous light modulation circuits 21,22.

[0025] In the embodiment, the analog continuous dimming circuit 21, 22 is further integrated with a constant current control circuit.

[0026] In the embodiment, the color temperature setting switch circuit 2 and the brightness adjustment switch circuit 3 are adjustable electronic components or mechanical switches, or the color temperature setting switch circuit 2 and the brightness adjustment switch circuit 3 are potentiometers, toggle switches, rotary switches or endless rotary switches.

[0027] When the color temperature setting switch circuit 2 sends a setting signal (voltage signal, different voltage corresponding to different color temperature) of different duty cycles under the same current value, the control circuit 5 detects the voltage signal and sends a setting signal (two groups of PWM signals, PWM1 signal and PWM2 signal, different duty cycle corresponding to different color temperature) of different duty cycles; when the analog continuous dimming circuit 21, 22 detects the PWM1 signal and the PWM2 signal respectively, the corresponding module Driver pin outputs control adjusts the current of the corresponding connected lamp string circuit; according to the different setting signals, the current ratio of the two lamp string circuits 81, 82 is changed under the condition that the current of the two lamp string circuits 81, 82 is unchanged, and the light of different color temperature emitted by the two lamp string circuits 81, 82 of different color temperature is mixed; for example, the lamp string circuit 81 is 2700K and the lamp string circuit 82 is 6500K, and after adjustment, the color temperature can be set arbitrarily within 2700K-6500K.

[0028] When the brightness adjustment switch circuit 3 sends an adjustment signal (voltage signal, different voltage corresponding to different brightness) of current size change under the same duty cycle, the control circuit 5 detects the voltage signal and sends an adjustment signal (two groups of PWM signals, PWM1 signal and PWM2 signal) of current size change under the same duty cycle; when the analog continuous dimming circuit 21, 22 detects the PWM1 signal and the PWM2 signal respectively, the corresponding module Driver pin adjusts the current of the corresponding connected lamp string circuit to be larger or smaller (the total current of the two paths is larger or smaller, but the current ratio of the two lamp string circuits 81, 82 remains unchanged, that is, when the brightness is adjusted, the color temperature remains unchanged).

[0029] The utility model discloses a kind of multi-color temperature multi-power adjustable circuit device, the current of corresponding different color temperature lamp string circuit is controlled by at least two analog continuous dimming circuit, under the condition that multiple lamp string circuit total current is invariable, the current ratio between different lamp string circuits is adjusted, so that the light emitted by different color temperature is mixed with certain ratio to realize different gear color temperature switching;Because the current of analog continuous dimming circuit that it flows through lamp string circuit is linear and continuous, it has the advantages of small current noise, low light frequency flicker, more suitable for human visual perception.In the case where lamp string circuit current ratio is invariable (i.e. under the condition that color temperature is invariable), by controlling at least two analog continuous dimming circuit to change the current of lamp string circuit connected by it respectively and simultaneously increase or simultaneously reduce (i.e. make multiple lamp string circuit total current larger or smaller, but the current ratio between lamp string circuits is invariable) to realize the adjustable brightness, because analog continuous dimming circuit can continuously change lamp string circuit current, not only different brightness gear can be set, but also continuous stepless dimming can be realized, so that color temperature adjustable is realized while reaching brightness adjustable, so that user has more rich function experience.

[0030] Embodiment two

[0031] Referring to Figure 2 As shown in the utility model discloses a kind of multi-color temperature multi-power adjustable circuit device, and the difference between embodiment one is that the two analog continuous dimming circuit 21,22 are integrated in same IC chip.

[0032] Embodiment three

[0033] Referring to Figure 3 As shown in the utility model discloses a kind of multi-color temperature multi-power adjustable circuit device, and the difference between embodiment one is that the lamp string circuit is two, i.e. lamp string circuit 81,82, the analog continuous dimming circuit is multiple, the multiple analog continuous dimming circuit respectively outputs dimming signal to two lamp string circuits 81,82, and every two analog continuous dimming circuit 21,22 are integrated in same IC chip.

[0034] Embodiment four

[0035] Referring to Figure 4 As shown in the utility model discloses a kind of multi-color temperature multi-power adjustable circuit device, and the difference between embodiment one is that the analog continuous dimming circuit is multiple, every two analog continuous dimming circuit 21,22 are integrated in same IC chip, and every IC chip controls two lamp string circuits 81,82 respectively.

[0036] Embodiment five

[0037] Referring to Figure 5As shown, the multi-color temperature and multi-power adjustable circuit device is different from the first embodiment in that the lamp string circuit is two, i.e., lamp string circuits 81 and 82, the analog continuous dimming circuit is multiple, the multiple analog continuous dimming circuits output dimming signals to the two lamp string circuits 81 and 82 respectively, and every two analog continuous dimming circuits 21 and 22 are integrated in the same IC chip, and the PWM1 signal and the PWM2 signal emitted by the control circuit 5 control two analog continuous dimming circuits 21 and 22 in two or more IC chips at the same time.

[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with a preferred embodiment, it is not intended to limit the utility model. Any person skilled in the art can make many possible changes and modifications to the utility model technical solution or modify equivalent embodiments by using the disclosed technical content without departing from the scope of the utility model technical solution. Therefore, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model should fall within the protection scope of the utility model technical solution.

Claims

1. A multi-color temperature and multi-power adjustable circuit device, characterized by: The invention comprises a rectifier circuit, at least two analog continuous dimming circuits, a color temperature gear setting switch circuit, a brightness adjustment switch circuit and a control circuit; the input of the rectifier circuit is connected to the live wire and the neutral wire of the alternating current, the output of the rectifier circuit is respectively connected to each analog continuous dimming circuit, and each analog continuous dimming circuit is respectively connected to the corresponding light string circuit; the color temperature gear setting switch circuit and the brightness adjustment switch circuit are respectively connected to the input of the control circuit, and the output of the control circuit is respectively connected to the control end of each analog continuous dimming circuit; the color temperature gear setting switch circuit inputs setting signals of different duty cycles under the same current value to the control circuit, so that the control circuit outputs setting signals of different duty cycles to each analog continuous dimming circuit; the brightness adjustment switch circuit inputs adjustment signals of current size changes under the same duty cycle to the control circuit, so that the control circuit outputs adjustment signals of current size changes under the same duty cycle to each analog continuous dimming circuit.

2. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: The control circuit is an MCU control circuit made of an MCU chip.

3. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: In the at least two analog continuous dimming circuits, each analog continuous dimming circuit is integrated into a corresponding IC chip.

4. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: Among the at least two analog continuous dimming circuits, all analog continuous dimming circuits are integrated into a same IC chip.

5. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: Among the at least two analog continuous dimming circuits, all analog continuous dimming circuits are integrated into at least two IC chips.

6. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: There are two light string circuits, and there are multiple analog continuous dimming circuits. The multiple analog continuous dimming circuits output dimming signals to the two light string circuits respectively.

7. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: The analog continuous dimming circuit is also integrated with a constant current control circuit.

8. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: The color temperature gear setting switch circuit and the brightness adjustment switch circuit are adjustable electronic components or mechanical switches.

9. The multi-color temperature and multi-power adjustable circuit device according to claim 1, characterized in that: The color temperature gear setting switch circuit and the brightness adjustment switch circuit are potentiometers, toggle switches, rotary switches or stepless rotary switches.

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