Colorful LED wireless synchronous lamp dimming circuit

Abstract

The utility model relates to a colorful LED wireless synchronous lamp dimming circuit, comprising a constant voltage isolation driving power supply used for outputting electric power to each circuit; the single-chip microcomputer module is used for processing the transceiving instruction; the infrared remote control receiver is connected with the single chip microcomputer module and used for transmitting an external wireless remote control instruction to the single chip microcomputer module; the alternating-current synchronous signal isolation transmission is connected with the single chip microcomputer module and used for isolating the alternating-current frequency signal and then sending the alternating-current frequency signal to the single chip microcomputer module; and the LED driver is connected with the single chip microcomputer module and is used for receiving an instruction of the single chip microcomputer module and presenting a corresponding lighting effect. The colorful LED wireless synchronous lamp dimming circuit adopts wireless control, changes of multiple lamps can be synchronized, program effects presented by the lamps can be set through an infrared remote controller, and multi-program effects can be selected; a plurality of lamps present the same program effect at the same time, and the change is synchronous without delay, is realized through alternating current frequency, and is realized in an isolation circuit with high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a dimming circuit for a multi-color LED wireless synchronous lamp. Background Art

[0002] In color LED applications, the synchronization of control lamps is mostly achieved by laying signal lines in cascade, or using wireless control modules (such as Bluetooth, WiFi, NB-Iot, etc.) to achieve signal synchronization; the cost is high and the failure rate is high. Some home users use AC signals for synchronization, but most of them are non-isolated, which poses a safety hazard. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a safe and reliable colorful LED wireless synchronous lamp dimming circuit that can achieve a variety of change effects.

[0004] The utility model is realized through the following technical solutions:

[0005] A colorful LED wireless synchronous lamp dimming circuit, comprising:

[0006] Constant voltage isolated drive power supply, used to output power to supply each circuit, and the back-end power supply achieves extra-low voltage (SELV) state;

[0007] A single-chip microcomputer module is used to process the sending and receiving instructions;

[0008] An infrared remote control receiver is connected to the single-chip microcomputer module and is used to transmit external wireless remote control commands to the single-chip microcomputer module;

[0009] AC synchronous signal isolation transmission, connected to the single-chip microcomputer module, used to isolate the AC frequency signal and send it to the single-chip microcomputer module;

[0010] The LED driver is connected to the microcontroller module and is used to receive instructions from the microcontroller module and present corresponding lighting effects.

[0011] In a preferred embodiment of the present invention, the single-chip microcomputer module adopts the all-intelligent core RS55 / SOP16.

[0012] The constant voltage isolation driving power supply adopts an AC / DC power supply with an input of AC90-305V and a constant voltage output of DC12 / 24V.

[0013] The infrared remote control receiver includes an infrared receiver and an RC circuit. The infrared receiver VCC pin is powered by the RC circuit, and the infrared receiver OUT pin transmits a signal to the single chip.

[0014] Among them, the AC synchronization signal isolation transmission includes resistor R1, resistor R2, optocoupler U2, and resistor R3 connected in sequence. Resistors R1 and R2 are current limiting resistors. The 50Hz / 60Hz AC sine wave passes through the optocoupler U2 to form an isolated signal to the microcontroller. The AC signal is synchronized in the same circuit, and then the light changes in the circuit are synchronized. Resistor R3 has a pull-up resistor signal gain function.

[0015] The LED driver includes an N-type MOS tube and several resistors. The microcontroller pin outputs a PWM signal. The PWM signal duty cycle is used to control the switching depth of the N-type MOS tube, thereby controlling the brightness change of the corresponding group of LEDs.

[0016] The beneficial effects of the utility model are: the colorful LED wireless synchronous lamp dimming circuit adopts wireless control, the changes of multiple lamps can be synchronized, the program effects presented by the lamps can be set through the infrared remote control, 3 groups of color light RGB + 2 groups of cold and warm white light CW, combined with various home scene light backgrounds, multiple program effects can be called; multiple lamps present the same program effect at the same time, and the changes are synchronized without delay, which is achieved through the alternating current frequency, can be used as soon as the power is turned on, the operation is simple and convenient, and it is realized in an isolated circuit with high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural block diagram of the dimming circuit of the multi-color LED wireless synchronous lamp of the utility model;

[0018] Figure 2 This is a circuit schematic diagram of the dimming circuit of the colorful LED wireless synchronous lamp of the utility model;

[0019] Figure 3 This is a schematic diagram of the switch circuit of the LED driver of the present utility model. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] like Figure 1 A colorful LED wireless synchronous lamp dimming circuit shown includes a constant voltage isolation driving power supply, which is the power supply of the module and is used to output power to supply the back-end power supply of each circuit to work in a safety extra low voltage (SELV) state;

[0022] The single-chip microcomputer module uses the full-intelligent core RS55 / SOP16, which is connected to the constant voltage isolation drive power supply to process the sending and receiving instructions, receive infrared and AC signal instructions, and distribute PWM instructions to each group of drivers;

[0023] An infrared remote control receiver is connected to the single-chip microcomputer module and is used to transmit external wireless remote control commands to the single-chip microcomputer module;

[0024] The AC synchronous signal isolation transmission is connected to the single-chip microcomputer module, which is used to isolate the AC frequency signal at the power end through the AC optocoupler and then send it to the single-chip microcomputer module, so that multiple lamps can change at the same speed and achieve synchronous effect changes;

[0025] The LED driver is connected to the single-chip computer module, including the red LED driver Red Driver, the green LED driver GreenDriver, the blue LED driver Blue Driver, the cool white LED driver Cool White Driver, and the warm white LED driver Warm White Driver. It is used to receive instructions from the single-chip computer module and present corresponding lighting effects.

[0026] Specifically, combined Figure 2 , Figure 3 As shown, the constant voltage isolation driving power supply adopts an AC / DC power supply, with an input of AC90~305V and a constant voltage output of DC12 / 24V. The constant voltage isolation driving power supply converts AC power into DC power to power the control circuit and LED; after the resistor RI, the DC voltage DV1, and the capacitor C1 current limiting and voltage stabilizing decoupling, a stable working voltage is provided to the microcontroller U1 and the infrared remote control receiver IR1.

[0027] The infrared remote control receiver IR1 includes an infrared receiver and an RC circuit. The VCC pin of the infrared receiver is powered by the RC circuit. The OUT pin of the infrared receiver transmits a signal to the single chip, receives the control command sent by the outside world, and transmits it to pin 12 on the single chip U1 through the OUT pin after digestion. At this time, the single chip U1 converts the command transmitted by the infrared remote control receiver IR1 through the internal program processing, and transmits the PWM signal through 7, 8, 5, 11, 10 (red light, green light, blue light, warm white, cold white). The PWM signal controls the N-type MOS tubes corresponding to Q1-Q5. The duty cycle of the PWM signal is different, corresponding to different changes in the brightness and darkness of the LED.

[0028] The AC synchronization signal isolation transmission includes resistor R1, resistor R2, optocoupler U2, and resistor R3 connected in sequence. AC-L / N is connected to 50 / 60Hz AC power, and strong electrical isolation is achieved through current limiting resistors R1 and R2, and after passing through the AC optocoupler U2, AC to DC signal conversion is achieved. The AC signal in the same circuit is synchronized, and the single-chip microcomputer MCU can achieve synchronization.

[0029] The LED driver includes an N-type MOS tube and several resistors. The microcontroller pin outputs a PWM signal. The PWM signal duty cycle is used to control the switching depth of the N-type MOS tube, thereby controlling the brightness change of the corresponding group of LEDs.

[0030] When in use, connect these multiple circuits to the same AC loop and supply AC power at the same time. When the AC signal is synchronized at 50 / 60Hz, multiple circuits can achieve signal synchronization, and each lamp changes at the same speed.

[0031] Use infrared remote control receiver to receive infrared commands from external remote control to present different lighting effects;

[0032] For example, by turning on red, green, blue or a combination of different colors, especially a combination of high and low color temperatures (2200K+6500K), adjusting the duty cycle can achieve all mixed color temperatures of 2200-6500K, calculated according to the 0-256 grayscale color change;

[0033] This lamp can achieve the change of 256(R)*256(G)*256(B)*256(W)*256(C)≈1.0*10 12 .

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A colorful LED wireless synchronous lamp dimming circuit, characterized in that: include Constant voltage isolated driving power supply, used to output power to supply various circuits; A single-chip microcomputer module is used to process the sending and receiving instructions; An infrared remote control receiver is connected to the single-chip microcomputer module and is used to transmit external wireless remote control commands to the single-chip microcomputer module; AC synchronous signal isolation transmission, connected to the single-chip microcomputer module, used to isolate the AC frequency signal and send it to the single-chip microcomputer module; The LED driver is connected to the microcontroller module and is used to receive instructions from the microcontroller module and present corresponding lighting effects.

2. The multi-color LED wireless synchronous lamp dimming circuit according to claim 1, characterized in that: The MCU module adopts the all-intelligent core RS255 / SOP16 。 3. The multi-color LED wireless synchronous lamp dimming circuit according to claim 1, characterized in that: The constant voltage isolation driving power supply adopts an AC / DC power supply, with an input of AC90-305V and a constant voltage output of DC12 / 24V.

4. The multi-color LED wireless synchronous lamp dimming circuit according to claim 1, characterized in that: The infrared remote control receiver includes an infrared receiver and an RC circuit. The infrared receiver VCC pin is powered by the RC circuit, and the infrared receiver OUT pin transmits signal instructions to the single chip microcomputer.

5. The multi-color LED wireless synchronous lamp dimming circuit according to claim 1, characterized in that: The AC synchronization signal isolation transmission includes resistors R1-R2, optocoupler U2, and resistor R3 connected in sequence. Resistors R1 and R2 are current limiting resistors. The 50Hz / 60Hz AC sine wave passes through the optocoupler U2 to form an isolated signal to the microcontroller. The AC signal is synchronized in the same loop, and then the light changes in the loop are synchronized. Resistor R3 has a pull-up resistor signal gain function.

6. The multi-color LED wireless synchronous lamp dimming circuit according to claim 1, characterized in that: The LED driver includes an N-type MOS tube and several resistors. The microcontroller pin outputs a PWM signal. The PWM signal duty cycle is used to control the switching depth of the N-type MOS tube, thereby controlling the brightness change of the corresponding group of LEDs.

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