Power knob controller for realizing color temperature adjustment by 0-10V direct-current voltage signal

Abstract

The utility model relates to the technical field of color temperature adjusting control, in particular to a power knob controller for adjusting color temperature by 0-10V direct-current voltage signals, which comprises an AC-DC (alternating current-direct current) power module, a PWM (pulse-width modulation) pulse transmitting module, a single chip microcomputer operation module, an LM358 operational amplifier integral module, a negative voltage circuit module, an indicator lamp module, a rectifier bridge filter capacitor, a transformer and an MOS (metal oxide semiconductor) tube. The rectifier bridge filter capacitor is coupled with the primary side of the transformer, the secondary side of the transformer is coupled with the MOS tube, 220V alternating current is converted into 310V direct current power supply through the rectifier bridge filter capacitor, and the 310V direct current power supply reaches the secondary side of the transformer through the primary side of the transformer and the MOS tube to be converted into 16V direct current to be supplied to the DC-DC module; according to the utility model, alternating current input and two paths of 0-10V signal output are supported, the control voltage is safer in a 0-10V voltage range, the power grid is not polluted, the condition that a dimming data packet is lost does not exist, and the brightness, color temperature value and cold and warm brightness of lamplight can be controlled according to different requirements.

Description

Technical Field

[0001] This utility model relates to the field of color temperature control technology, and in particular to a color temperature control knob controller that uses a 0-10V DC voltage signal to adjust the color temperature. Background Technology

[0002] Currently, traditional SCR dimming technology is limited to ordinary incandescent and halogen lamps. This is because incandescent and halogen lamps are purely resistive devices; they do not require a sinusoidal input voltage because their current and voltage waveforms are the same. Therefore, regardless of how much the voltage waveform deviates from a sine wave, dimming can be achieved by changing the effective value of the input voltage. The principle of a SCR is to cut the sine wave of alternating current to change its effective voltage value. Because the SCR disrupts the shape of the sine wave and reduces the power factor (typically below 0.5), and the power factor worsens as the conduction angle decreases (only 0.25 at 1 / 4 dimming), the non-sinusoidal waveform also increases the harmonic coefficients, generating severe EMI interference signals on the circuit. It is also prone to instability under low loads; therefore, a bleeder resistor must be added to dissipate at least 1-2 watts of power. Furthermore, an unexpected problem arises when the output of a typical SCR dimming circuit is connected to the LED driver: the LC filter at the input can cause the SCR to oscillate. This kind of oscillation is negligible for incandescent and halogen lamps because the thermal inertia of incandescent lamps makes it imperceptible to the human eye. However, for LED drivers, it will generate noise and LED light flicker. LED drivers also have limitations in dimming power, cannot achieve synchronization, have few control nodes, are not well compatible with LED drivers from various manufacturers, and cannot achieve better control, making it difficult to precisely control the brightness and color temperature of the current light.

[0003] To address the aforementioned issues, this application proposes a color temperature adjustment power knob controller that utilizes a 0-10V DC voltage signal. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a 0-10V DC voltage signal-based color temperature adjustment power knob controller. This solves the problem that existing technologies often produce unexpected issues when the output of a conventional SCR dimming circuit is sent to the LED driver: the LC filter at the input causes the SCR to oscillate. This oscillation is negligible for incandescent and halogen lamps because the thermal inertia of incandescent lamps makes it imperceptible to the human eye. However, for LED drivers, it generates noise and LED flicker. Furthermore, LED drivers have limitations in dimming power, cannot achieve synchronization, have few control nodes, are not well compatible with LED drivers from various manufacturers, and cannot effectively control the brightness and color temperature of the current light.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A color temperature adjustment knob controller using a 0-10V DC voltage signal includes an AC-DC power supply module, a PWM pulse transmission module, a microcontroller processing module, an LM358 operational amplifier integration module, a negative voltage circuit module, and an indicator light module.

[0007] The AC-DC power module includes a rectifier bridge filter capacitor, a transformer, and a MOSFET. The rectifier bridge filter capacitor is coupled to the primary side of the transformer, and the secondary side of the transformer is coupled to the MOSFET. 220V AC power is converted to 310V DC power through the rectifier bridge filter capacitor. The 310V DC power is converted to 16V DC power through the primary side of the transformer and the MOSFET to reach the secondary side of the transformer and supply the DC-DC module.

[0008] The PWM pulse transmitting module is coupled to the MCU module via a pulse switch. The MCU module detects the output PWM signal from the pulse module. By manually controlling clockwise rotation, counterclockwise rotation, and pressing, the pulse switch outputs different PWM signals. The MCU module collects the PWM signals from the pulse module, decodes the different signals, and makes corresponding PWM outputs.

[0009] The input terminal of the LM358 op-amp integrator module is coupled to the PWM integrator module, and the output terminal is coupled to the push-pull module. The output terminal of the PWM integrator module is coupled to the microcontroller arithmetic module. The connection between the PWM integrator module and the microcontroller arithmetic module is used to convert PWM digital signals.

[0010] The MCU module is coupled to the LED indicator module, which reflects the current output mode by illuminating different colors, including color temperature adjustment, brightness adjustment, and output mode off.

[0011] As a preferred technical solution of this utility model, the DC-DC module is coupled to the MP2451 DC chip, and the output pins of the MP2451 DC chip are respectively coupled to three parts: MCU, negative voltage chip, and PWM pulse rotary switch.

[0012] As a preferred technical solution of this utility model, the DC-DC module filters the 16V DC voltage and connects it to the MP2451 DC chip to convert the 16V DC voltage into a 5V voltage to supply the MCU, the negative voltage chip, and the PWM pulse rotary switch.

[0013] As a preferred technical solution of this utility model, the input terminal of the push-pull module is coupled to the output terminal of the LM385 module. The push-pull module receives the 0-5 analog signal output by the LM385 module and amplifies the signal to 0-10V.

[0014] As a preferred technical solution of this utility model, the MCU module detects the state of the module switch by outputting a PWM signal from the pulse detection module and outputs a corresponding PWM signal, or outputs different LED indicator signals to drive the integral current and the LED indicator module status.

[0015] As a preferred technical solution of this utility model, the LM358 operational amplifier integrator module receives the PWM signal output by the MCU module and outputs a 0-5V analog signal through the LM358 integrator circuit.

[0016] This invention provides a color temperature adjustment power knob controller that uses a 0-10V DC voltage signal, which has the following advantages:

[0017] 1. Compared with traditional dimming control, this application has the following advantages: it is simple to apply, easy to connect, and has no poor compatibility. It is efficient, accurate, and has a good dimming effect. It is easy to control, and its control voltage is safer within the range of 0-10V. It does not pollute the power grid and there is no problem of losing dimming data packets. It can also control the brightness, color temperature, and warm / cool brightness of the light according to different needs.

[0018] 2. This utility model supports AC power input and two 0-10V signal outputs, solving the problems that traditional dimming cannot achieve. It can meet the lighting color temperature change effects of various stages and theaters, and has simple wiring, convenient control, high efficiency, and strong anti-interference ability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the control device for two 0-10V channels according to this utility model;

[0020] Figure 2 This is a functional block diagram of the microcontroller of this utility model;

[0021] Figure 3 This is a circuit diagram of the AC-DC power supply system of this utility model;

[0022] Figure 4 This is a diagram of the MCU module of this utility model;

[0023] Figure 5 This is a diagram of the microcontroller processing module of this utility model;

[0024] Figure 6 This is a diagram of the LM358 operational amplifier integration module of this utility model;

[0025] Figure 7 The circuit diagram shows the chip U4 and the Zener diode U7 of this utility model. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0028] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments:

[0029] refer to Figure 1-2 A color temperature adjustment power knob controller that uses a 0-10V DC voltage signal includes an AC-DC power supply module, a PWM pulse transmission module, a microcontroller processing module, an LM358 operational amplifier integration module, a negative voltage circuit module, and an indicator light module.

[0030] The AC-DC power module includes a rectifier bridge filter capacitor, a transformer, and a MOSFET. The rectifier bridge filter capacitor is coupled to the primary side of the transformer, and the secondary side of the transformer is coupled to the MOSFET. 220V AC power is converted to 310V DC power through the rectifier bridge filter capacitor. The 310V DC power is then converted to 16V DC power through the primary side of the transformer and the MOSFET to reach the secondary side of the transformer, which supplies the DC-DC module. The DC-DC module is coupled to an MP2451 DC chip. The output pins of the MP2451 DC chip are respectively coupled to an MCU, a negative voltage chip, and a PWM pulse rotary switch. The DC-DC module filters the 16V DC voltage and connects it to the MP2451 DC chip, converting the 16V DC voltage into a 5V voltage to supply the MCU, negative voltage chip, and PWM pulse rotary switch.

[0031] The PWM pulse transmitting module is coupled to the MCU module via a pulse switch. The MCU module detects the output PWM signal from the pulse module. By manually controlling clockwise rotation, counterclockwise rotation, and pressing, the pulse switch outputs different PWM signals. The MCU module collects the PWM signal from the pulse module, decodes the different signals, and makes corresponding PWM outputs. The MCU module detects the output PWM signal from the pulse module to determine the state of the module switch and outputs the corresponding PWM signal, or outputs different LED indicator signals to drive the integral current and the LED indicator module state. The LM358 operational amplifier integration module receives the PWM signal output by the MCU module and outputs a 0-5V analog signal through the LM358 integration circuit.

[0032] The input of the LM358 op-amp integrator module is coupled to the PWM integrator module, and the output is coupled to the push-pull module. The output of the PWM integrator module is coupled to the microcontroller arithmetic module. The PWM integrator module and the microcontroller arithmetic module are connected to convert PWM digital signals. The input of the push-pull module is coupled to the output of the LM385 module. The push-pull module receives the 0-5 analog signal output by the LM385 module and amplifies the signal to 0-10V.

[0033] The MCU module is coupled to the LED indicator module, which reflects the current output mode by illuminating different colors, including color temperature adjustment, brightness adjustment, and output mode off.

[0034] This utility model supports AC power input and two 0-10V signal outputs, solving the problems that traditional dimming cannot achieve. It can meet the lighting color temperature change effects of various stages and theaters, and is simple to wire, easy to control, highly efficient, and has strong anti-interference capabilities.

[0035] refer to Figure 3As shown, the 220V AC power is filtered by diode D1 and capacitor CE102, then passed through a switching regulator circuit consisting of transformer T2, inductor, high-speed switching transistor U103, and freewheeling diode to deliver 310V to the transformer secondary. Approximately 16V then passes through DC-DC chip U4, capacitors C9 and C10, and is filtered again to obtain a stable and smooth 5V power supply for powering the microcontroller module and pulse receiver module.

[0036] refer to Figure 4 As shown, the microcontroller, as the system's processing unit, is the core device of the system and is responsible for controlling the pulse signal, indicator light, corresponding PWM signal, and output signal.

[0037] See the reference image. Figure 5 As shown; the PWM signal is integrated into 0-5V DC by the U2 LM358 operational amplifier, and then drives the Q5 and Q6 MOS transistors through a push-pull circuit; the output is a smooth 0-10V voltage;

[0038] refer to Figure 6 As shown; the PWM signal is integrated into 0-5V DC by the U2 LM358 operational amplifier, and then drives the Q5 and Q6 MOS transistors through a push-pull circuit; the output is a smooth 0-10V voltage;

[0039] refer to Figure 7 As shown, the 16-24V DC voltage passes through the DC-DC chip U4, inductor, and capacitor to output a smooth 13.5V voltage. The 13.5V voltage then passes through the Zener diode U7, and is output as 5V DC voltage to supply the MCU, negative voltage chip, and pulse switch for operation.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A 0-10V DC voltage signal realizes the color temperature of the power knob controller, including AC-DC power module, PWM pulse sending module, single-chip microcomputer operation module, LM358 operational amplifier integration module, negative voltage circuit module, indicator light module, characterized in that, AC-DC power module, including rectifier bridge filter capacitor, transformer, MOS tube, the above-mentioned rectifier bridge filter capacitor is coupled to the primary side of the transformer, the secondary side of the transformer is coupled with the MOS tube, 220V alternating current is converted into 310V DC power through rectifier bridge filter capacitor, 310V DC power is converted into 16V DC through transformer primary, MOS tube to transformer secondary, and is supplied to DC-DC module; PWM pulse sending module is coupled with MCU module through pulse switch, the MCU module outputs PWM signal through detection pulse module, different PWM signals are outputted by pulse switch through manual control clockwise rotation, counterclockwise rotation and pressing, and the MCU module decodes different signals through collecting PWM signal of pulse module and makes corresponding PWM output; The input end of LM358 operational amplifier integration module is coupled with PWM integration module, the output end is coupled with push-pull module, the output end of PWM integration module is coupled with single-chip microcomputer operation module, and PWM integration module and single-chip microcomputer operation module are connected for converting PWM digital signal; The MCU module is coupled with LED indicator light module, the LED indicator light module reflects the current output mode including color temperature, brightness and off output mode by lighting different colors.

2. A 0-10V DC voltage signal implementing color temperature power knob controller according to claim 1, characterized in that, DC-DC module is coupled with MP2451 DC chip, and the output pin of the MP2451 DC chip is coupled with MCU, negative voltage chip and PWM pulsing knob switch.

3. A 0-10V DC voltage signal implementing color temperature power knob controller according to claim 2, characterized in that, DC-DC module filters 16V DC voltage and connects with MP2451 DC chip to convert 16V DC voltage into 5V voltage for MCU, negative voltage chip and PWM pulsing knob switch.

4. The 0-10V DC voltage signal to CCT power knob controller of claim 1, wherein, The input end of push-pull module is coupled with LM385 module output end, and the push-pull module amplifies 0-5 analog signal outputted by LM385 module to 0-10V.

5. A 0-10V DC voltage signal implementing color temperature power knob controller according to claim 1, characterized in that, The MCU module outputs PWM signal through detection pulse module to judge the state of module switch and output corresponding PWM signal, or output different LED indication signals to drive integral current and LED indicator light module state.

6. A 0-10V DC voltage signal implementing color temperature power knob controller according to claim 1, characterized in that, LM358 operational amplifier integration module receives PWM signal outputted by MCU module through LM358 integration circuit and outputs 0-5V analog signal.

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