Drive circuit based on smart LED

Abstract

The utility model belongs to the technical field of automobile drive circuits, and particularly relates to a drive circuit based on a smart LED, which comprises a power input and LDO module, an MCU control module and an LED lamp bead module, and is characterized in that the power input and LDO module is respectively connected with the MCU control module and the LED lamp bead module; the MCU control module is connected with the power input and LDO module and the LED lamp bead module. The LED lamp bead module is connected with the power input, the LDO module and the MCU control module, a smart LED is provided with a driver, RGB data can be directly calibrated, the dimming step and a work station are omitted, and the cost is greatly reduced; the smart LEDs can realize synchronous control of a plurality of lamp beads through series connection, so that the circuit cost is reduced; the smart LED has temperature monitoring / open circuit / short circuit / VDS detection and return functions, and the applicability is extremely high; the drive circuit can realize that the current of the smart LED is constant when the input voltage is changed from 9V to 16V, so that the brightness of the LED is changed in a tiny range, and the brightness consistency of products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile drive circuits, in particular to a drive circuit based on smart LEDs. Background Art

[0002] As cars become smarter, driving pleasure and comfort have become important considerations for consumers when choosing a car. RGBLED has become an indispensable component of car lights due to its rich color changes and intelligent control.

[0003] The current drive circuit still has the following technical problems when used:

[0004] At present, most RGB LEDs on the market not only require external complex control circuits, but also require a series of complex steps such as calibration and dimming on the basis of PCBA to achieve color changes and different working conditions, which greatly increases the difficulty of circuit design and a lot of costs (manpower, dimming equipment, etc.);

[0005] Therefore, a driving circuit based on smart LED is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a driving circuit based on a smart LED to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a driving circuit based on smart LED, comprising a power input and LDO module, an MCU control module and an LED lamp bead module, wherein the power input and LDO module are respectively connected to the MCU control module and the LED lamp bead module; the MCU control module is respectively connected to the power input and LDO module and the LED lamp bead module; the LED lamp bead module is respectively connected to the power input and LDO module and the MCU control module;

[0008] The power input and LDO module includes a connector CN1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a diode D1, a TVS tube D2 and a chip U1;

[0009] The MCU control module includes a chip U2, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R1, a resistor R2, a resistor R3, a magnetic bead LF1, a transistor D3 and a connector CN2;

[0010] The LED lamp bead module includes capacitors C12, C13, C14, C15, C16, LED1, LED2, LED3, LED4 and LED5.

[0011] Preferably, one end of the capacitor C1 is connected to a 12V power input, the other end of the capacitor C1 is connected to one end of a capacitor C6, the other end of the capacitor C6 is grounded, one end of the TVS tube D2 is connected to the 12V power input, the other end of the TVS tube D2 is grounded, the positive electrode of the diode D1 is connected to the 12V power input, the negative electrode of the diode D1 is connected to one end of the capacitor C2 and capacitor C3 and the 8th pin of the chip U1, one end of the capacitors C2 and C3 is connected to the negative electrode of the diode and the 8th pin of the chip U1, the other end of the capacitors C2 and C3 is grounded, one end of the capacitors C4 and C5 is connected to the 1st pin of the chip U1, and the other end of the capacitors C4 and C5 is grounded.

[0012] Preferably, the 8th pin and the 20th pin of the chip U2 are grounded, the 11th pin of the chip U2 is connected to the 12V power input and one end of the capacitor C9, the other end of the capacitor C9 is grounded, the 1st pin of the chip U2 is connected to the 10th pin, the capacitor C10, and one end of the capacitor C11, the other ends of the capacitor C10 and the capacitor C11 are grounded, the 9th pin of the chip U2 is connected to the capacitor C8 and one end of the magnetic bead LF1, the other end of the capacitor C8 is grounded, the other end of the magnetic bead LF1 is connected to the 1st pin of the transistor D3, the power input and the 2nd pin of the connector CN1 of the LDO module, the other end of the transistor D3 is grounded, the 14th pin of the chip U2 is connected to the 7th pin of the chip U1 of the power input and the LDO module, the 7th pin of the chip U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the LED lamp The 3rd pin of the chip U2 is connected to the LED1 of the LED bead module, the 6th pin of the chip U2 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the 2nd pin of the LED1 of the LED lamp bead module, the 4th pin of the chip U2 is connected to one end of the resistor R3, one end of the capacitor C7, and the 1st pin of the connector CN2, the other end of the resistor R3 is connected to the 5V power input, the other end of the capacitor C7 is grounded, the 19th pin of the chip U2 is connected to the 4th pin of the connector CN2, the 18th pin of the chip U2 is connected to the 5th pin of the connector CN2, the 3rd pin of the chip U2 is connected to the 8th pin of the LED5 of the LED lamp bead module, the 2nd pin of the chip U2 is connected to the 9th pin of the LED5 of the LED lamp bead module, the 2nd pin of the connector CN2 is connected to the 5V power input, and the 3rd pin of the connector CN2 is grounded.

[0013] Preferably, one end of the capacitor C12 is connected to the 1st pin, the 6th pin, and the 5V power input of LED1, the other end of the capacitor C12 is connected to the 5th pin, the 7th pin, and the ground of LED1, the 2nd pin of LED1 is connected to one end of the resistor R2 of the MCU control module, the 3rd pin of LED1 is connected to one end of the resistor R1 of the MCU control module, the 8th pin of LED1 is connected to the 2nd pin of LED2, the 9th pin of LED1 is connected to the 3rd pin of LED2, the 10th pin of LED1 is grounded, and one end of the capacitor C13 is connected to the 1st pin, the 6th pin, and the 5V power input of LED2. The other end of the capacitor C13 is connected to the 5th and 7th pins of LED2 and ground, the 2nd pin of LED2 is connected to the 8th pin of LED1, the 3rd pin of LED2 is connected to the 9th pin of LED1, the 8th pin of LED2 is connected to the 2nd pin of LED3, the 9th pin of LED2 is connected to the 3rd pin of LED3, the 10th pin of LED2 is grounded, one end of the capacitor C14 is connected to the 1st and 6th pin of LED3 and 5V power input, the other end of the capacitor C14 is connected to the 5th and 7th pin of LED3 and ground, the 2nd pin of LED3 is connected to the 8th pin of LED2 The 3rd pin of the LED3 is connected to the 9th pin of the LED2, the 8th pin of the LED3 is connected to the 2nd pin of the LED4, the 9th pin of the LED3 is connected to the 3rd pin of the LED4, the 10th pin of the LED3 is grounded, one end of the capacitor C15 is connected to the 1st pin, the 6th pin and the 5V power input of the LED4, the other end of the capacitor C15 is connected to the 5th pin, the 7th pin and the ground of the LED4, the 2nd pin of the LED4 is connected to the 8th pin of the LED3, the 3rd pin of the LED4 is connected to the 9th pin of the LED3, the 8th pin of the LED4 is connected to the 2nd pin of the LED5, the L The 9th pin of ED4 is connected to the 3rd pin of LED5, the 10th pin of LED4 is grounded, one end of the capacitor C16 is connected to the 1st pin, the 6th pin and the 5V power input of LED5, the other end of the capacitor C16 is connected to the 5th pin, the 7th pin and the ground of LED5, the 2nd pin of LED5 is connected to the 8th pin of LED4, the 3rd pin of LED5 is connected to the 9th pin of LED4, the 8th pin of LED5 is connected to the 3rd pin of the chip U2 of the MCU control module, the 9th pin of LED4 is connected to the 2nd pin of the chip U2 of the MCU control module, and the 10th pin of LED5 is grounded.

[0014] Preferably, the model of the chip U1 is AP7375Q-50SP-13; the model of the chip U2 is PIC16F1829LIN; and the model of the LED is EV3838CMTCM20601.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In this application, the smart LED has its own driver, which can directly calibrate the RGB data, omit the dimming steps and workstations, and greatly reduce costs; the smart LED can realize synchronous control of multiple lamp beads by connecting in series, reducing circuit costs; the smart LED has temperature monitoring / open circuit / short circuit / VDS detection and reporting functions, and is highly applicable; the driving circuit can realize the smart LED current to remain constant when the input voltage changes from 9V to 16V, and realize the LED brightness to change within a small range, ensuring the brightness consistency of the product; the MCU control module can control the power input of the LED lamp beads, ensure that the power input of the LED is cut off when the LED does not need to be lit, and prevent the LED lamp beads from accidentally lighting up when the working conditions are not met; the MCU control module can input PWM signals with different duty cycles to the LED lamp bead module to control the LED working current, thereby realizing the control of the LED brightness. For example, increasing the PWM duty cycle from 0%-100% can make the LED brightness change from off to on, and increasing the PWM duty cycle from 100%~0% can make the LED brightness change from on to off. The MCU control module can accept control signals from the vehicle body BCM and implement different working conditions according to different instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the principle block diagram based on the smart LED driving circuit;

[0018] Figure 2 This is the schematic diagram of the power input and LDO module;

[0019] Figure 3 This is the schematic diagram of the MCU control module and LED lamp bead module. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Example:

[0023] See also Figure 1-3 , the utility model provides a technical solution:

[0024] A driving circuit based on smart LED, comprising a power input and LDO module, an MCU control module and an LED lamp bead module, wherein the power input and LDO module are respectively connected to the MCU control module and the LED lamp bead module; the MCU control module is respectively connected to the power input and LDO module and the LED lamp bead module; the LED lamp bead module is respectively connected to the power input and LDO module and the MCU control module;

[0025] The power input and LDO module includes a connector CN1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a diode D1, a TVS tube D2 and a chip U1;

[0026] The MCU control module includes a chip U2, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R1, a resistor R2, a resistor R3, a magnetic bead LF1, a transistor D3 and a connector CN2;

[0027] The LED lamp bead module includes capacitors C12, C13, C14, C15, C16, LED1, LED2, LED3, LED4 and LED5.

[0028] One end of the capacitor C1 is connected to the 12V power input, the other end of the capacitor C1 is connected to one end of the capacitor C6, the other end of the capacitor C6 is grounded, one end of the TVS tube D2 is connected to the 12V power input, the other end of the TVS tube D2 is grounded, the positive electrode of the diode D1 is connected to the 12V power input, the cathode of the diode D1 is connected to one end of the capacitor C2 and the capacitor C3 and the 8th pin of the chip U1, one end of the capacitors C2 and C3 is connected to the cathode of the diode and the 8th pin of the chip U1, the other end of the capacitors C2 and C3 is grounded, one end of the capacitors C4 and C5 is connected to the 1st pin of the chip U1, and the other end of the capacitors C4 and C5 is grounded.

[0029] The 8th pin and the 20th pin of the chip U2 are grounded, the 11th pin of the chip U2 is connected to the 12V power input and one end of the capacitor C9, the other end of the capacitor C9 is grounded, the 1st pin of the chip U2 is connected to the 10th pin, the capacitor C10 and one end of the capacitor C11, the other ends of the capacitor C10 and the capacitor C11 are grounded, the 9th pin of the chip U2 is connected to the capacitor C8 and one end of the magnetic bead LF1, the other end of the capacitor C8 is grounded, the other end of the magnetic bead LF1 is connected to the 1st pin of the transistor D3, the power input and the 2nd pin of the connector CN1 of the LDO module, the other end of the transistor D3 is grounded, the 14th pin of the chip U2 is connected to the 7th pin of the chip U1 of the power input and the LDO module, the 7th pin of the chip U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the LED lamp bead module The 3rd pin of LED1 of the LED lamp bead module is connected, the 6th pin of the chip U2 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the 2nd pin of LED1 of the LED lamp bead module, the 4th pin of the chip U2 is connected to one end of the resistor R3, one end of the capacitor C7, and the 1st pin of the connector CN2, the other end of the resistor R3 is connected to the 5V power input, the other end of the capacitor C7 is grounded, the 19th pin of the chip U2 is connected to the 4th pin of the connector CN2, the 18th pin of the chip U2 is connected to the 5th pin of the connector CN2, the 3rd pin of the chip U2 is connected to the 8th pin of LED5 of the LED lamp bead module, the 2nd pin of the chip U2 is connected to the 9th pin of LED5 of the LED lamp bead module, the 2nd pin of the connector CN2 is connected to the 5V power input, and the 3rd pin of the connector CN2 is grounded.

[0030] One end of the capacitor C12 is connected to the 1st pin, the 6th pin, and the 5V power input of LED1, the other end of the capacitor C12 is connected to the 5th pin, the 7th pin, and the ground of LED1, the 2nd pin of LED1 is connected to one end of the resistor R2 of the MCU control module, the 3rd pin of LED1 is connected to one end of the resistor R1 of the MCU control module, the 8th pin of LED1 is connected to the 2nd pin of LED2, the 9th pin of LED1 is connected to the 3rd pin of LED2, the 10th pin of LED1 is grounded, one end of the capacitor C13 is connected to the 1st pin, the 6th pin, and the 5V power input of LED2, and the capacitor C14 is connected to the 1st pin, the 6th pin, and the 5V power input of LED2. The other end of capacitor C13 is connected to the 5th and 7th pins of LED2 and ground, the 2nd pin of LED2 is connected to the 8th pin of LED1, the 3rd pin of LED2 is connected to the 9th pin of LED1, the 8th pin of LED2 is connected to the 2nd pin of LED3, the 9th pin of LED2 is connected to the 3rd pin of LED3, the 10th pin of LED2 is grounded, one end of capacitor C14 is connected to the 1st and 6th pin of LED3 and 5V power input, the other end of capacitor C14 is connected to the 5th and 7th pin of LED3 and ground, the 2nd pin of LED3 is connected to the 8th pin of LED2, The third pin of LED3 is connected to the ninth pin of LED2, the eighth pin of LED3 is connected to the second pin of LED4, the ninth pin of LED3 is connected to the third pin of LED4, the tenth pin of LED3 is grounded, one end of capacitor C15 is connected to the first pin, the sixth pin and the 5V power input of LED4, the other end of capacitor C15 is connected to the fifth pin, the seventh pin and the ground of LED4, the second pin of LED4 is connected to the eighth pin of LED3, the third pin of LED4 is connected to the ninth pin of LED3, the eighth pin of LED4 is connected to the second pin of LED5, and the LE The 9th pin of D4 is connected to the 3rd pin of LED5, the 10th pin of LED4 is grounded, one end of the capacitor C16 is connected to the 1st pin, the 6th pin and the 5V power input of LED5, the other end of the capacitor C16 is connected to the 5th pin, the 7th pin and the ground of LED5, the 2nd pin of LED5 is connected to the 8th pin of LED4, the 3rd pin of LED5 is connected to the 9th pin of LED4, the 8th pin of LED5 is connected to the 3rd pin of chip U2 of MCU control module, the 9th pin of LED4 is connected to the 2nd pin of chip U2 of MCU control module, and the 10th pin of LED5 is grounded.

[0031] The model of the chip U1 is AP7375Q-50SP-13; the model of the chip U2 is PIC16F1829LIN; and the model of the LED is EV3838CMTCM20601.

[0032] Smart LED (EV3838CMTCM20601) is a programmable RGB LED lamp with built-in ICG. Each RGB output supports 8-16-bit adjustable PWM dimming to achieve simple modulation of color and brightness; each channel has a maximum of 60 mA, and each RGB output has 8-bit current adjustment; built-in OTP, color calibration can be performed at D65 to achieve excellent color consistency; built-in LED voltage detection, open circuit / short circuit / VDS detection and reporting functions; multiple LEDs can be connected in series to achieve synchronous control Based on the characteristics and advantages of smart LED, this application is suitable for high-demand RGB automotive lights such as automotive atmosphere lights, automotive wheel eyebrow lights, and automotive charging indicator lights.

[0033] Working principle:

[0034] When the 12V power supply is powered on, the MCU enters the standby state. After receiving the corresponding LIN signal, the 14th pin of the chip U2 of the MCU control module outputs a high level to enable the chip U1. The chip U1 is an LDO chip, which converts the 12V power input into a 5V power input to supply the MCU control module and the LED lamp bead module. At the same time, the 6th pin, 7th pin, 2nd pin, and 3rd pin of the chip U2 of the MCU control module will perform input / output according to the received LIN signal, so as to control the smart LED lamp bead string to achieve effects such as constant light, flashing, and breathing.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0036] Although 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 driving circuit based on smart LED, including power input and LDO module, MCU control module and LED lamp bead module, characterized in that: The power input and LDO module are connected to the MCU control module and the LED lamp bead module respectively; the MCU control module is connected to the power input and LDO module and the LED lamp bead module respectively; the LED lamp bead module is connected to the power input and LDO module and the MCU control module respectively; The power input and LDO module includes a connector CN1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a diode D1, a TVS tube D2 and a chip U1; The MCU control module includes a chip U2, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R1, a resistor R2, a resistor R3, a magnetic bead LF1, a transistor D3 and a connector CN2; The LED lamp bead module includes capacitors C12, C13, C14, C15, C16, LED1, LED2, LED3, LED4 and LED5.

2. A driving circuit based on smart LED according to claim 1, characterized in that: One end of the capacitor C1 is connected to the 12V power input, the other end of the capacitor C1 is connected to one end of the capacitor C6, the other end of the capacitor C6 is grounded, one end of the TVS tube D2 is connected to the 12V power input, the other end of the TVS tube D2 is grounded, the positive electrode of the diode D1 is connected to the 12V power input, the cathode of the diode D1 is connected to one end of the capacitor C2 and the capacitor C3 and the 8th pin of the chip U1, one end of the capacitors C2 and C3 is connected to the cathode of the diode and the 8th pin of the chip U1, the other end of the capacitors C2 and C3 is grounded, one end of the capacitors C4 and C5 is connected to the 1st pin of the chip U1, and the other end of the capacitors C4 and C5 is grounded.

3. The driving circuit based on smart LED according to claim 1, characterized in that: The 8th pin and the 20th pin of the chip U2 are grounded, the 11th pin of the chip U2 is connected to the 12V power input and one end of the capacitor C9, the other end of the capacitor C9 is grounded, the 1st pin of the chip U2 is connected to the 10th pin, the capacitor C10 and one end of the capacitor C11, the other ends of the capacitor C10 and the capacitor C11 are grounded, the 9th pin of the chip U2 is connected to the capacitor C8 and one end of the magnetic bead LF1, the other end of the capacitor C8 is grounded, the other end of the magnetic bead LF1 is connected to the 1st pin of the transistor D3, the power input and the 2nd pin of the connector CN1 of the LDO module, the other end of the transistor D3 is grounded, the 14th pin of the chip U2 is connected to the 7th pin of the chip U1 of the power input and the LDO module, the 7th pin of the chip U2 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the LED lamp bead module The 3rd pin of LED1 of the LED lamp bead module is connected, the 6th pin of the chip U2 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the 2nd pin of LED1 of the LED lamp bead module, the 4th pin of the chip U2 is connected to one end of the resistor R3, one end of the capacitor C7, and the 1st pin of the connector CN2, the other end of the resistor R3 is connected to the 5V power input, the other end of the capacitor C7 is grounded, the 19th pin of the chip U2 is connected to the 4th pin of the connector CN2, the 18th pin of the chip U2 is connected to the 5th pin of the connector CN2, the 3rd pin of the chip U2 is connected to the 8th pin of LED5 of the LED lamp bead module, the 2nd pin of the chip U2 is connected to the 9th pin of LED5 of the LED lamp bead module, the 2nd pin of the connector CN2 is connected to the 5V power input, and the 3rd pin of the connector CN2 is grounded.

4. The driving circuit based on smart LED according to claim 1, characterized in that: One end of the capacitor C12 is connected to the 1st pin, the 6th pin, and the 5V power input of LED1, the other end of the capacitor C12 is connected to the 5th pin, the 7th pin, and the ground of LED1, the 2nd pin of LED1 is connected to one end of the resistor R2 of the MCU control module, the 3rd pin of LED1 is connected to one end of the resistor R1 of the MCU control module, the 8th pin of LED1 is connected to the 2nd pin of LED2, the 9th pin of LED1 is connected to the 3rd pin of LED2, the 10th pin of LED1 is grounded, one end of the capacitor C13 is connected to the 1st pin, the 6th pin, and the 5V power input of LED2, and the capacitor C14 is connected to the 1st pin, the 6th pin, and the 5V power input of LED2. The other end of capacitor C13 is connected to the 5th and 7th pins of LED2 and ground, the 2nd pin of LED2 is connected to the 8th pin of LED1, the 3rd pin of LED2 is connected to the 9th pin of LED1, the 8th pin of LED2 is connected to the 2nd pin of LED3, the 9th pin of LED2 is connected to the 3rd pin of LED3, the 10th pin of LED2 is grounded, one end of capacitor C14 is connected to the 1st and 6th pin of LED3 and 5V power input, the other end of capacitor C14 is connected to the 5th and 7th pin of LED3 and ground, the 2nd pin of LED3 is connected to the 8th pin of LED2, The third pin of LED3 is connected to the ninth pin of LED2, the eighth pin of LED3 is connected to the second pin of LED4, the ninth pin of LED3 is connected to the third pin of LED4, the tenth pin of LED3 is grounded, one end of capacitor C15 is connected to the first pin, the sixth pin and the 5V power input of LED4, the other end of capacitor C15 is connected to the fifth pin, the seventh pin and the ground of LED4, the second pin of LED4 is connected to the eighth pin of LED3, the third pin of LED4 is connected to the ninth pin of LED3, the eighth pin of LED4 is connected to the second pin of LED5, and the LE The 9th pin of D4 is connected to the 3rd pin of LED5, the 10th pin of LED4 is grounded, one end of the capacitor C16 is connected to the 1st pin, the 6th pin and the 5V power input of LED5, the other end of the capacitor C16 is connected to the 5th pin, the 7th pin and the ground of LED5, the 2nd pin of LED5 is connected to the 8th pin of LED4, the 3rd pin of LED5 is connected to the 9th pin of LED4, the 8th pin of LED5 is connected to the 3rd pin of chip U2 of MCU control module, the 9th pin of LED4 is connected to the 2nd pin of chip U2 of MCU control module, and the 10th pin of LED5 is grounded.

5. The driving circuit based on smart LED according to claim 1, characterized in that: The model of the chip U1 is AP7375Q-50SP-13; the model of the chip U2 is PIC16F1829LIN; and the model of the LED is EV3838CMTCM20601.

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