High-efficiency energy-saving safe double-color LED control circuit

Abstract

The utility model relates to the field of circuit controllers, and discloses a high-efficiency energy-saving safe double-color LED control circuit, which comprises a power supply, a controller and a plurality of LED lamps arranged in parallel, and is characterized in that the controller is internally provided with a program control circuit, a memory circuit, an infrared remote control receiving circuit, a low-power-consumption power supply circuit, an H-bridge drive circuit and a short-circuit protection circuit, through the design of the low-power-consumption power supply circuit, reverse connection prevention is achieved through the diode D1 and the diode D2, clamping protection is achieved through the voltage stabilizing diode ZD, stable 5V power supply is provided after filtering of the capacitor C1 and low-power-consumption voltage reduction and voltage stabilization of the chip U1, the standby power consumption is lower than 0.5 W, the 6-level energy efficiency is met, and the use cost of an LED is reduced; and through the design of the short-circuit protection circuit, when the output line is short-circuited or over-current, the output can be cut off in time, so that accidental burning is avoided, and the service life of the LED lamp is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit controllers, in particular to a circuit controller for an LED lamp, and specifically to a high-efficiency, energy-saving and safe two-color LED control circuit. Background Art

[0002] LED circuit controller, also known as LED controller, is an electronic device used to control the brightness, color and display effect of LED (light emitting diode). It controls the switches at various positions in the LED light circuit through chip processing, and controls the drive circuit according to a pre-set program to make the LED array emit light regularly, thereby displaying text or graphics.

[0003] The current LED lights used for Christmas or Halloween have high standby energy consumption and do not meet the 6-level energy efficiency standards, which increases the cost of using LED lights. In addition, the Christmas LED light controllers on the market lack short-circuit protection. When a short circuit or overcurrent occurs in the output line, it is easy to cause accidental burning.

[0004] After searching, the patent with application number CN201310029237.8 discloses a sound and light control circuit, including a power supply, a sound and light controller, a plurality of LED lights and a switch control panel, the power supply is electrically connected to the sound and light controller, the output circuit of the sound and light controller is electrically connected to the LED lights, the shell of the sound and light controller is provided with a switch control panel, the surface of the switch control panel is provided with a photosensitive diode and a voice-controlled microphone, and the photosensitive diode and the voice-controlled microphone are both electrically connected to the sound and light controller. This invention transmits the sound wave and light intensity information of the external environment to the sound and light controller through the photosensitive diode and the voice-controlled microphone, so that the process of the LED light from lighting, flashing to extinguishing does not require human operation, the structure is simple, and it can be used in circuits such as street lights, stair lights, and flash lights.

[0005] The above scheme and the problems mentioned above, such as not meeting the 6-level energy efficiency and lack of short-circuit protection, are likely to reduce the service life of the LED lamp and increase the cost of using the LED lamp. Therefore, we need to propose an efficient, energy-saving and safe two-color LED control circuit. Summary of the invention

[0006] The purpose of the utility model is to provide an efficient, energy-saving and safe two-color LED control circuit. Through the design of a low-power power supply circuit, reverse connection protection is achieved through diodes D1 and D2, clamping protection is achieved through a voltage-stabilizing diode ZD, and a stable 5V power supply is provided after filtering by a capacitor C1 and low-power step-down and voltage stabilization by a chip U1. The standby power consumption is less than 0.5W, which meets the 6-level energy efficiency and reduces the use cost of LEDs. Through the design of a short-circuit protection circuit, the output can be shut down in time when a short circuit or overcurrent occurs in the output line to avoid accidental burning, thereby increasing the service life of the LED lamp to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: an efficient, energy-saving and safe two-color LED control circuit, comprising a power supply, a controller and a plurality of LED lamps arranged in parallel, the power supply is electrically connected to the controller, the output end of the controller is electrically connected to the LED lamp, and a button is arranged on the housing of the controller;

[0008] The controller is internally provided with a program control circuit, a memory circuit, an infrared remote control receiving circuit, a low-power supply circuit, an H-bridge driving circuit and a short-circuit protection circuit. The program control circuit, the memory circuit and the H-bridge driving circuit are all electrically connected to the low-power supply circuit, and the memory circuit, the infrared remote control receiving circuit, the H-bridge driving circuit and the short-circuit protection circuit are all electrically connected to the program control circuit.

[0009] Preferably, the program control circuit includes a chip U2, a capacitor C4 is connected between pins 1 and 14 of the chip U2, and pin 1 of the chip U2 is connected to a 5V voltage, a resistor R3 and a light-emitting diode LED are connected between pins 1 and 4 of the chip U2, a crystal oscillator X1 is connected to pin 2 of the chip U2, capacitors C7 and C8 are connected in series at both ends of the crystal oscillator X1, a resistor R15 connected to the capacitor C8 and the connection terminals of the crystal oscillator X1 is connected to pin 3 of the chip U2, and a grounded switch SW is connected to pin 7 of the chip U2.

[0010] Preferably, the memory circuit includes a chip U3, the infrared remote control receiving circuit includes an infrared chip IR, pin 4 of the chip U3 and pin 3 of the infrared chip IR are both connected to 5V, pin 3 of the chip U3 is connected to pin 8 of chip U2, pin 1 of the chip U3 is connected to pin 9 of chip U2, a capacitor C5 is connected between pin 2 and pin 3 of the infrared chip IR, and pin 1 of the infrared chip IR is connected to pin 11 of chip U2.

[0011] Preferably, the low-power supply circuit includes a chip U1, a capacitor C1 and a diode D1 arranged in parallel are connected between pin 1 and pin 2 of the chip U1, a diode D2, a resistor R1 and a voltage-stabilizing diode ZD are connected in series between the diode D1 and the capacitor C1, and a power supply VCC is connected to the connection terminals of the diode D1 and the diode D2, a capacitor C2 is connected between pin 2 and pin 3 of the chip U1, and pin 3 of the chip U1 outputs a 5V voltage.

[0012] Preferably, the H-bridge driving circuit comprises a MOS tube Q1, a MOS tube Q2, a MOS tube Q3, and a MOS tube Q4, and a plurality of the LED lamps arranged in parallel are connected between the connection terminals of the drain electrode D of the MOS tube Q1 and the source electrode S of the MOS tube Q2 and the connection terminals of the drain electrode D of the MOS tube Q3 and the source electrode S of the MOS tube Q4;

[0013] A resistor R10 is connected between the gate G and the source S of the MOS transistor Q1 , a resistor R12 is connected between the gate G and the source S of the MOS transistor Q3 , and both the source S of the MOS transistor Q1 and the source S of the MOS transistor Q3 are connected to a power source VCC.

[0014] Preferably, a resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q1 and the source electrode S of the MOS transistor Q2 and the gate electrode G of the MOS transistor Q3, and a resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q3 and the source electrode S of the MOS transistor Q4 and the gate electrode G of the MOS transistor Q1;

[0015] The gate G of the MOS tube Q2 is respectively connected to a grounded resistor R6 and a resistor R5 connected to pin 5 of the chip U2, and the gate G of the MOS tube Q4 is respectively connected to a grounded resistor R8 and a resistor R7 connected to pin 6 of the chip U2.

[0016] Preferably, the short-circuit protection circuit includes a resistor R2 connected to the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4, one end of the resistor R2 is connected to pin 10 of the chip U2, and a detection resistor R13 and a detection resistor R14 arranged in parallel are also connected between the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model adopts the design of low-power power supply circuit, realizes reverse connection protection through diodes D1 and D2, and clamping protection through voltage stabilizing diode ZD. After filtering by capacitor C1 and low-power step-down voltage stabilization by chip U1, a stable 5V power supply is provided, and the standby power consumption is less than 0.5W, which meets the 6-level energy efficiency and reduces the use cost of LED.

[0019] 2. The utility model uses the design of a short-circuit protection circuit to promptly shut down the output when a short circuit or overcurrent occurs in the output line, thereby avoiding accidental burning and thus increasing the service life of the LED lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 A circuit diagram of a low-power power supply circuit of the utility model;

[0022] Figure 3 This is a circuit diagram of the wireless remote control receiving circuit of the utility model;

[0023] Figure 4 The circuit diagram of the H-bridge drive circuit and the short-circuit protection circuit of the utility model;

[0024] Figure 5 The utility model is a circuit diagram of a program control circuit, a memory circuit and an infrared remote control receiving circuit. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution: an efficient, energy-saving and safe two-color LED control circuit, comprising a power supply 1, a controller 2 and a plurality of LED lamps 3 arranged in parallel, the power supply 1 is electrically connected to the controller 2, the output end of the controller 2 is electrically connected to the LED lamp 3, and a button is arranged on the shell of the controller 2; a switch control panel 4 is also arranged on the controller 2, a photodiode 5 and a voice-controlled microphone 6 are arranged on the surface of the switch control panel 4, and the photodiode 5 and the voice-controlled microphone 6 are both electrically connected to the controller 2.

[0027] The LED lamps 3 are connected in parallel to the circuit so that the LED lamps 3 can be illuminated, extinguished or breathing flashed at the same time, thereby enhancing the lighting and viewing effects.

[0028] The LED lamp 3 is a two-color LED lamp, which changes the color of the two-color LED lamp 3 by flipping the photodiode 5 circuit, so that the LED lamp 3 generates light of different colors.

[0029] The controller 2 is internally provided with a program control circuit, a memory circuit, an infrared remote control receiving circuit, a low-power power supply circuit, an H-bridge driving circuit and a short-circuit protection circuit. The program control circuit, the memory circuit and the H-bridge driving circuit are all electrically connected to the low-power power supply circuit, and the memory circuit, the infrared remote control receiving circuit, the H-bridge driving circuit and the short-circuit protection circuit are all electrically connected to the program control circuit.

[0030] The program control circuit includes a chip U2, a capacitor C4 is connected between pins 1 and 14 of the chip U2, and pin 1 of the chip U2 is connected to a 5V voltage, a resistor R3 and a light-emitting diode LED are connected between pins 1 and 4 of the chip U2, a crystal oscillator X1 is connected to pin 2 of the chip U2, capacitors C7 and C8 are connected in series at both ends of the crystal oscillator X1, a resistor R15 connected to the capacitor C8 and the connection terminals of the crystal oscillator X1 is connected to pin 3 of the chip U2, a grounded switch SW is connected to pin 7 of the chip U2, and the function selection of the key is realized through the switch SW.

[0031] The model of chip U2 is YJ18062-14 or U2 YJ17062-8, which can record a variety of different set values.

[0032] The memory circuit can memorize and save the selected mode. The memory circuit includes chip U3. The infrared remote control receiving circuit includes infrared chip IR. Pin 4 of chip U3 and pin 3 of infrared chip IR are both connected to 5V. Pin 3 of chip U3 is connected to pin 8 of chip U2. Pin 1 of chip U3 is connected to pin 9 of chip U2. Pin 2 and pin 5 of chip U3 are both grounded. Capacitor C5 is connected between pin 2 and pin 3 of infrared chip IR. Pin 1 of infrared chip IR is connected to pin 11 of chip U2.

[0033] It also includes a wireless remote control receiving circuit, which includes a chip U4, wherein an inductor L1, a capacitor C11 and an inductor L2 are connected in parallel between pin 1 and pin 2 of the chip U4, a capacitor C10 is connected between the capacitor C11 and the inductor L2, a resistor R4 connected to a 5V voltage is connected to pin 3 of the chip U4, and a grounded capacitor C6 and a capacitor C9 are connected between pin 3 and pin 4 of the chip U4;

[0034] Pin 1 and pin 6 of chip U4 are connected, and a crystal oscillator X2 is connected between pin 6 and pin 8 of chip U4. Pin 5 of chip U4 is connected to a resistor R17 connected to pin 11 of chip U2.

[0035] The low-power supply circuit includes a chip U1, a capacitor C1 and a diode D1 connected in parallel are connected between pin 1 and pin 2 of the chip U1, a diode D2, a resistor R1 and a voltage-stabilizing diode ZD are connected in series between the diode D1 and the capacitor C1, and a power supply VCC is connected to the connection terminals of the diode D1 and the diode D2, a capacitor C2 is connected between pin 2 and pin 3 of the chip U1, and pin 3 of the chip U1 outputs a 5V voltage.

[0036] The output end of the diode D1 is connected to the input end of the diode D2, and the two ends of the resistor R1 are respectively connected to the output end of the diode D2 and the input end of the voltage-stabilizing diode ZD. The diode D1 and the diode D2 realize the anti-reverse connection function of the circuit, and the voltage-stabilizing diode ZD realizes clamping protection. After filtering by the capacitor C1 and low-power step-down stabilization of the chip U1, a stable 5V power supply is provided to power the chips U2, U3, and U4.

[0037] The H-bridge driving circuit includes MOS tubes Q1, Q2, Q3 and Q4, and a plurality of LED lamps 3 arranged in parallel are connected between the connection terminals of the drain electrode D of the MOS tube Q1 and the source electrode S of the MOS tube Q2 and the connection terminals of the drain electrode D of the MOS tube Q3 and the source electrode S of the MOS tube Q4;

[0038] A resistor R10 is connected between the gate G and the source S of the MOS transistor Q1 , a resistor R12 is connected between the gate G and the source S of the MOS transistor Q3 , and both the source S of the MOS transistor Q1 and the source S of the MOS transistor Q3 are connected to the power supply VCC.

[0039] A resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q1 and the source electrode S of the MOS transistor Q2 and the gate electrode G of the MOS transistor Q3, and a resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q3 and the source electrode S of the MOS transistor Q4 and the gate electrode G of the MOS transistor Q1;

[0040] The gate G of the MOS tube Q2 is respectively connected to a grounded resistor R6 and a resistor R5 connected to the 5th pin of the chip U2, and the gate G of the MOS tube Q4 is respectively connected to a grounded resistor R8 and a resistor R7 connected to the 6th pin of the chip U2.

[0041] The H-bridge drive circuit is mainly composed of four MOS tubes, which can provide efficient driving capabilities for LEDs. In the market, they are all composed of six transistors, which not only saves costs but also improves the driving efficiency of LED lamps.

[0042] The short-circuit protection circuit includes a resistor R2 connected to the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4. One end of the resistor R2 is connected to pin 10 of the chip U2. A detection resistor R13 and a detection resistor R14 arranged in parallel are also connected between the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency, energy-saving and safe dual-color LED control circuit, characterized in that: It comprises a power supply (1), a controller (2) and a plurality of LED lamps (3) arranged in parallel, the power supply (1) is electrically connected to the controller (2), the output end of the controller (2) is electrically connected to the LED lamp (3), and a button is arranged on the housing of the controller (2); The controller (2) is internally provided with a program control circuit, a memory circuit, an infrared remote control receiving circuit, a low-power supply circuit, an H-bridge drive circuit and a short-circuit protection circuit; the program control circuit, the memory circuit and the H-bridge drive circuit are all electrically connected to the low-power supply circuit; the memory circuit, the infrared remote control receiving circuit, the H-bridge drive circuit and the short-circuit protection circuit are all electrically connected to the program control circuit.

2. According to claim 1, a high-efficiency, energy-saving and safe dual-color LED control circuit is characterized in that: The program control circuit includes a chip U2, a capacitor C4 is connected between pins 1 and 14 of the chip U2, and pin 1 of the chip U2 is connected to a 5V voltage, a resistor R3 and a light-emitting diode LED are connected between pins 1 and 4 of the chip U2, a crystal oscillator X1 is connected to pin 2 of the chip U2, capacitors C7 and C8 are connected in series at both ends of the crystal oscillator X1, a resistor R15 connected to the capacitor C8 and the connection terminals of the crystal oscillator X1 is connected to pin 3 of the chip U2, and a grounded switch SW is connected to pin 7 of the chip U2.

3. The high-efficiency, energy-saving and safe dual-color LED control circuit according to claim 2, characterized in that: The memory circuit includes a chip U3, and the infrared remote control receiving circuit includes an infrared chip IR. Pin 4 of the chip U3 and pin 3 of the infrared chip IR are both connected to 5V, pin 3 of the chip U3 is connected to pin 8 of the chip U2, pin 1 of the chip U3 is connected to pin 9 of the chip U2, a capacitor C5 is connected between pin 2 and pin 3 of the infrared chip IR, and pin 1 of the infrared chip IR is connected to pin 11 of the chip U2.

4. The high-efficiency, energy-saving and safe dual-color LED control circuit according to claim 1, characterized in that: The low-power supply circuit includes a chip U1, a capacitor C1 and a diode D1 connected in parallel are connected between pin 1 and pin 2 of the chip U1, a diode D2, a resistor R1 and a voltage-stabilizing diode ZD are connected in series between the diode D1 and the capacitor C1, and a power supply VCC is connected to the connection terminals of the diode D1 and the diode D2, a capacitor C2 is connected between pin 2 and pin 3 of the chip U1, and pin 3 of the chip U1 outputs a 5V voltage.

5. The high-efficiency, energy-saving and safe dual-color LED control circuit according to claim 4, characterized in that: The H-bridge drive circuit comprises a MOS tube Q1, a MOS tube Q2, a MOS tube Q3 and a MOS tube Q4, and a plurality of the LED lamps (3) arranged in parallel are connected between the connection terminals of the drain electrode D of the MOS tube Q1 and the source electrode S of the MOS tube Q2 and between the connection terminals of the drain electrode D of the MOS tube Q3 and the source electrode S of the MOS tube Q4; A resistor R10 is connected between the gate G and the source S of the MOS transistor Q1 , a resistor R12 is connected between the gate G and the source S of the MOS transistor Q3 , and both the source S of the MOS transistor Q1 and the source S of the MOS transistor Q3 are connected to a power source VCC.

6. The high-efficiency, energy-saving and safe dual-color LED control circuit according to claim 5, characterized in that: A resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q1 and the source electrode S of the MOS transistor Q2 and the gate electrode G of the MOS transistor Q3, and a resistor R11 is connected between the connection terminals of the drain electrode D of the MOS transistor Q3 and the source electrode S of the MOS transistor Q4 and the gate electrode G of the MOS transistor Q1; The gate G of the MOS tube Q2 is respectively connected to a grounded resistor R6 and a resistor R5 connected to pin 5 of the chip U2, and the gate G of the MOS tube Q4 is respectively connected to a grounded resistor R8 and a resistor R7 connected to pin 6 of the chip U2.

7. The high-efficiency, energy-saving and safe dual-color LED control circuit according to claim 1, characterized in that: The short-circuit protection circuit includes a resistor R2 connected to the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4, one end of the resistor R2 is connected to pin 10 of the chip U2, and a detection resistor R13 and a detection resistor R14 arranged in parallel are also connected between the drain D of the MOS tube Q2 and the drain D of the MOS tube Q4.

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