CN200990703Y - Color Changing LED Light Controller - Google Patents

Abstract

The utility model relates to a LED lamp controller especially relates to a LED lamp controller discolours, including the alternating current power supply input unit who has input (AC1) and input (AC2), micro-processing unit MCU and the current-limiting voltage stabilizing circuit who connects between power input unit and micro-processing unit MCU, connect the sampling circuit between power input unit and micro-processing unit MCU, the function selection unit who is connected with micro-processing unit, connect the double-circuit half-wave rectification drive circuit between power input unit and micro-processing unit MCU, double-circuit half-wave rectification drive circuit control connects the lighting of the LED lamp between two outputs of double-circuit half-wave rectification drive circuit, extinguish and the colour accuse transform. The utility model provides an output control LED lamp that discolours sends three kinds of colour light controllers through all the way.

Description

Color Changing LED Light Controller

technical field

The utility model relates to an LED lamp controller, in particular to a color-changing LED lamp controller.

Background technique

Decorative lights are often used in daily life, especially in festivals, LED light strings of various colors are widely used in celebrations and building decorations as well as Christmas lights. These LED light strings that can change into n colors, the traditional dynamic control method is to output n channels from a controller, and directly control n channels of LED light strings of various colors to change into n colors. That is, if the dynamic change of the three colors is to be realized, the traditional technical solution requires the controller to output three channels. This method not only increases the consumption of materials, but also brings certain difficulties to production and processing.

Utility model content

The purpose of the utility model is to overcome the disadvantages of the above-mentioned prior art and provide a controller for controlling the color-changing LED lamp to emit three colors of light through one output.

To achieve the purpose, the utility model provides a controller that controls the color-changing LED lamp to emit three colors of light through one output. The device includes an AC power input unit with an input terminal (AC1) and an input terminal (AC2), a micro-processing unit MCU, and a current-limiting and voltage-stabilizing circuit connected between the power input unit and the micro-processing unit MCU, and the current-limiting and voltage-stabilizing circuit Power supply for the micro-processing unit MCU; also further include a sampling circuit connected between the power input unit and the micro-processing unit MCU, the sampling circuit collects the signal cycle of the input alternating current and sends it to the micro-processing unit MCU; and further includes connecting with the micro-processing unit A function selection unit, the function selection unit is used to input control instructions, control the color and lighting time of the LED lights; it further includes a dual-channel half-wave rectification drive circuit connected between the power input unit and the micro-processing unit MCU, The dual-channel half-wave rectification drive circuit has two output terminals, and the dual-channel half-wave rectification drive circuit obtains control signals from the micro-processing unit MCU to control the point of the LED lamp connected between the two output terminals of the dual-channel half-wave rectification drive circuit. On, off and color control change.

The current-limiting voltage stabilizing circuit is composed of a resistor (R2), diodes (D5) and (D3), a Zener diode (Z1) and a capacitor (C1); the resistor (R2) is connected to the AC power input terminal (AC1) and the diode Between the positive terminals of (D5); the positive terminal of the capacitor (C1) is connected to the negative terminal of the diode (D5) and the negative terminal of the Zener diode (Z1), and the negative terminal of the capacitor (C1) is connected to the other terminal through the diode (D3) The AC power input terminal (AC2) is connected; the Zener diode (Z1) is connected to the two terminals of the capacitor (C1), and the positive terminal of the Zener diode (Z1) is connected to the negative pole of the capacitor (C1); the positive pole of the capacitor (C1) is connected to the micro The positive power supply input terminal (VDD) of the processing unit MCU, and the negative pole of the capacitor (C1) are connected to the negative power supply input terminal (VSS) of the micro processing unit MCU.

The AC signal sampling circuit is composed of a resistor (R3), a capacitor (C2) and a resistor (R1); the capacitor (C2) is connected to the AC input terminal (AC1) through the resistor (R3), and connected to the AC power supply through the resistor (R1) The input terminal (AC2) is connected; one end of the capacitor (C2) connected to the resistor (R3) is connected to the signal input terminal (Y) of the micro-processing unit MCU at the same time.

The function selection circuit is formed by connecting a resistor (R5) and a switch (S1); one end of the switch (S1) is connected with the positive power supply input terminal (VDD) of the microprocessing unit MCU through the resistor (R5), and the other end is connected with the microprocessing unit MCU. The negative power supply input terminal (VSS) of the unit MCU is connected; the end connected to the switch (S1) and the resistor (R5) is simultaneously connected to the manual command signal input terminal (Z) of the micro-processing unit MCU.

Described double-way half-wave rectification driving circuit comprises one and is made up of four diodes (D1), (D2), (D3), (D4) and silicon controlled rectifier (Q1), and the negative pole of diode (D1) is connected with diode ( The positive terminal of D2) is connected, the positive terminal of diode (D3) is connected with the positive terminal of diode (D4), the positive terminal of diode (D2) is connected with the negative terminal of diode (D3), the positive terminal of diode (D1) is connected with the diode The negative terminal of (D4) is connected; the two output terminals of the dual-way half-wave rectification drive circuit are connected between the AC power input terminal (AC1) and the positive terminal of the diode (D1); the AC power input terminal (AC2) and the diode ( The positive terminal of D2) is connected; the anode terminal of the thyristor (Q1) is connected to the negative terminal of the diode (D1), the cathode terminal of the thyristor (Q1) is connected to the positive terminal of the diode (D4), and the thyristor (Q1) is connected to the positive terminal of the diode (D4). ) is connected to the signal output terminal (X pin) of the microprocessor MCU through a resistor (R4); one end of the resistor (R1) is connected to the AC power input terminal (AC2), and the other end is connected to the positive terminal of the diode (D4) .

According to the utility model, due to the color-changing LED lamp controller, four choices can be made according to the waveform period signal of the alternating current collected by the sampling circuit: a, light the color-changing LED lamp during positive wave (high level), b, When the negative wave (low level) is on, the color-changing LED light is on, c, when the positive wave (high level) and the negative wave (low level) are both on, the color-changing LED light is on, d, when the positive wave (high level) and the negative wave are on The LED lights are not lit when there is a wave (low level). The alternating current has a certain frequency, and the time of non-lighting is very short. What the human eye feels is the colored light that is lit, so the aforementioned two cases a and b can see two different colored lights, and the aforementioned case c, the two colored lights alternate Light it up, and what you see is the third light mixed with the two colors.

Description of drawings

Fig. 1 is a block diagram of the implementation of the utility model color-changing LED lamp controller.

Fig. 2 is a schematic circuit diagram of an embodiment of the color-changing LED lamp controller of the present invention.

Fig. 3 is a schematic diagram of the LED lamp controlled by the embodiment of the color-changing LED lamp controller of the present invention.

Fig. 4 is a schematic circuit diagram of an embodiment of the color-changing LED lamp controller of the present invention when it is connected to LED lamp strings.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings.

The most typical color-changing LED lamp that can be controlled by the controller and method of this embodiment is shown in Figure 3, including two pins 101 and 102 and a package shell 105, and the package shell 105 is provided with two LEDs of different colors to emit light. chip, two LED light-emitting chips 103 and 104 are connected in parallel and connected between two pins, and the polarity directions of the two LED light-emitting chips are different.

The color-changing LED lamp controller involved in this embodiment, with reference to Fig. 1, the device includes an AC power input unit with an input terminal (AC1) and an input terminal (AC2), a micro-processing unit MCU and is connected to the power input unit and the micro-processing unit A current-limiting and voltage-stabilizing circuit between the MCUs, the current-limiting and voltage-stabilizing circuit supplies power to the micro-processing unit MCU; it further includes a sampling circuit connected between the power input unit and the micro-processing unit MCU, and the sampling circuit collects the signal period of the input alternating current and It is sent to the micro-processing unit MCU; it further includes a function selection unit connected to the micro-processing unit, and the function selection unit is used to input control instructions to control the color and lighting duration of the LED lights; it also further includes a connection between the power input unit and the The dual-channel half-wave rectification drive circuit between the micro-processing unit MCU, the dual-channel half-wave rectification drive circuit has two output terminals, the dual-channel half-wave rectification drive circuit obtains control signals from the micro-processing unit MCU, and the control is connected to the dual-channel half-wave rectification drive circuit. The lighting, extinguishing and color control transformation of the LED lamp between the two output terminals of the wave rectification drive circuit.

With reference to Fig. 2, described current-limiting voltage stabilizing circuit is made up of resistance (R2), diode (D5) and (D3), Zener diode (Z1) and electric capacity (C1); Resistance (R2) is connected to AC power input terminal ( AC1) and the positive terminal of the diode (D5); the positive terminal of the capacitor (C1) is connected to the negative terminal of the diode (D5) and the negative terminal of the Zener diode (Z1), and the negative terminal of the capacitor (C1) passes through the diode (D3 ) is connected to another AC power input terminal (AC2); the Zener diode (Z1) is connected to the two ends of the capacitor (C1), and the positive terminal of the Zener diode (Z1) is connected to the negative pole of the capacitor (C1); the capacitor (C1) The positive pole of the capacitor (C1) is connected to the positive power input terminal (VDD) of the microprocessing unit MCU, and the negative pole of the capacitor (C1) is connected to the negative power supply input terminal (VSS) of the microprocessing unit MCU.

With reference to Fig. 2, described AC signal sampling circuit is made up of resistor (R3), capacitor (C2) and resistor (R1); ) is connected to the AC power input terminal (AC2); the end of the capacitor (C2) connected to the resistor (R3) is connected to the signal input terminal (Y) of the micro-processing unit MCU at the same time.

With reference to Fig. 2, described function selection circuit is connected by resistance (R5) and switch (S1); One end of switch (S1) is connected with the positive pole power supply input terminal (VDD) of microprocessing unit MCU by resistance (R5), and another One end is connected to the negative power supply input terminal (VSS) of the micro-processing unit MCU; the end connected to the switch (S1) and the resistor (R5) is simultaneously connected to the manual command signal input terminal (Z) of the micro-processing unit MCU.

With reference to Fig. 2, described double-way half-wave rectification drive circuit comprises one and is made up of four diodes (D1), (D2), (D3), (D4) and silicon controlled rectifier (Q1), the negative terminal of diode (D1) Connect to the positive end of the diode (D2), connect the positive end of the diode (D3) to the positive end of the diode (D4), connect the positive end of the diode (D2) to the negative end of the diode (D3), connect the positive end of the diode (D1) The terminal is connected to the negative terminal of the diode (D41); the two output terminals of the dual half-wave rectification drive circuit are connected between the AC power input terminal (AC1) and the positive terminal of the diode (D1); the AC power input terminal (AC2) It is connected to the positive terminal of the diode (D2); the anode terminal of the thyristor (Q1) is connected to the negative terminal of the diode (D1), and the cathode terminal of the thyristor (Q1) is connected to the positive terminal of the diode (D4). The control terminal of the silicon (Q1) is connected to the signal output terminal (X pin) of the microprocessor MCU through a resistor (R4); one end of the resistor (R1) is connected to the AC power input terminal (AC2), and the other end is connected to the diode (D4) Positive terminal connection.

Fig. 4 is a schematic circuit diagram showing the connection of the color-changing LED lamp controller of the present invention with LED lamp strings. The color-changing LED lamp controller 201 has two power supply input terminals AC1 and AC2, and two output terminals. Several color-changing LED lamps 202 are connected in series in a string and connected between the two output terminals. The color-changing LED lamp 202 includes two pins and a package shell, and the package shell is provided with two LED light-emitting chips of different colors. The two LED light-emitting chips 2021 and 2022 are connected in parallel and connected between the two pins. The polarity orientations of the light emitting chips are different.

Connect the color-changing LED light shown in Figure 3 to the color-changing LED light controller in the manner shown in Figure 4, and the color-changing LED light can be turned on, extinguished, and color controlled by pressing the button S1. Realize a control of color-changing LED lights to emit three colors of light through one output.

The application scope of the controller of the utility model is not limited to the serially connected color-changing LED lamp strings, but also can be single color-changing LED lamps or parallel-connected color-changing LED lamp strings.

Claims (5)

1, a kind of color-changed LED light controller, comprise AC power input unit, the microprocessing unit MCU of have input (AC1) and input (AC2) and be connected in power input unit and microprocessing unit MCU between the current limliting voltage stabilizing circuit, the current limliting voltage stabilizing circuit is microprocessing unit MCU power supply; It is characterized in that,

Also further comprise the sample circuit that is connected between power input unit and the microprocessing unit MCU, sample circuit is gathered the signal period of input AC electricity and is sent to microprocessing unit MCU;

Also further comprise the function selecting unit that is connected with microprocessing unit, the function selecting unit is used for input control order, the color that control LED lamp is lighted and light duration;

Also further comprise the two-way half-wave rectifying circuit drive circuit that is connected between power input unit and the microprocessing unit MCU, two-way half-wave rectifying circuit drive circuit has two outputs, two-way half-wave rectifying circuit drive circuit obtains control signal from microprocessing unit MCU, the lighting, extinguish and color control conversion of the LED lamp of control connection between two outputs of two-way half-wave rectifying circuit drive circuit.

2, color-changed LED light controller according to claim 1 is characterized in that, described current limliting voltage stabilizing circuit by resistance (R2), diode (D5) and (D3), voltage stabilizing didoe (Z1) and electric capacity (C1) forms; Resistance (R2) is connected between the positive terminal of ac power input end (AC1) and diode (D5); The positive pole of electric capacity (C1) and the negative pole end of diode (D5), and the negative pole end of voltage stabilizing didoe (Z1) is connected, the negative pole of electric capacity (C1) passes through diode (D3) and is connected with another ac power input end (AC2); Voltage stabilizing didoe (Z1) is connected in two ends of electric capacity (C1), and the positive terminal of voltage stabilizing didoe (Z1) connects the negative pole of electric capacity (C1); The positive pole of electric capacity (C1) connects the positive source input (VDD) of microprocessing unit MCU, and the negative pole of electric capacity (C1) connects the negative power supply input (VSS) of microprocessing unit MCU.

3, color-changed LED light controller according to claim 1 is characterized in that, described AC signal sample circuit is made up of resistance (R3), electric capacity (C2) and resistance (R1); Electric capacity (C2) links to each other with alternating current input (AC1) by resistance (R3), links to each other with ac power input end (AC2) by resistance (R1); The end that electric capacity (C2) is connected with resistance (R3) connects the signal input part (Y) of microprocessing unit MCU simultaneously.

4, color-changed LED light controller according to claim 1 is characterized in that, described function selector circuit is formed by connecting by resistance (R5) and switch (S1); One end of switch (S1) is connected with the cathode power supply input (VDD) of microprocessing unit MCU by resistance (R5), and the other end is connected with the negative power supply input (VSS) of microprocessing unit MCU; The end that switch (S1) is connected with resistance (R5) connects the manual command signal input part (Z) of microprocessing unit MCU simultaneously.

5, color-changed LED light controller according to claim 1, it is characterized in that, described two-way half-wave rectifying circuit drive circuit comprises that one is made up of four diodes (D1), (D2), (D3), (D4) and controllable silicon (Q1), the negative pole end of diode (D1) is connected with the positive terminal of diode (D2), the positive terminal of diode (D3) is connected with the positive terminal of diode (D4), the positive terminal of diode (D2) is connected with the negative pole end of diode (D3), and the positive terminal of diode (D1) is connected with the negative pole end of diode (D4); Two outputs of two-way halfwave rectifier drive circuit are connected between the positive terminal of ac power input end (AC1) and diode (D1); Ac power input end (AC2) is connected with the positive terminal of diode (D2); The anode tap of controllable silicon (Q1) is connected with the negative pole end of diode (D1), and the cathode terminal of controllable silicon (Q1) is connected with the positive terminal of diode (D4), and the control end of controllable silicon (Q1) connects the signal output part (X pin) of microprocessor MCU by resistance (R4); One end of resistance (R1) is connected with ac power input end (AC2), and the other end is connected with the positive terminal of diode (D4).

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