LED intelligent adjustment driving circuit with self-adaptive power

Abstract

The utility model relates to the technical field of LED driving, in particular to an LED intelligent adjustment driving circuit with self-adaptive power. The circuit comprises a single-chip microcomputer, and further comprises an AC-to-DC circuit, an LDO linear voltage stabilizing circuit, an MOS tube switching circuit and an MCU intelligent control module, the single-chip microcomputer is bidirectionally and electrically connected with the AC-to-DC circuit, the AC-to-DC circuit, the LDO linear voltage stabilizing circuit, the MCU intelligent control module and the MOS tube switching circuit are sequentially and electrically connected, the AC-to-DC circuit is connected with the MOS tube switching circuit, and the MCU intelligent control module is connected with the single-chip microcomputer. AC is converted into DC to supply power to lamps with different powers. According to the utility model, each circuit module is constructed in a cooperative manner, each assembly is in close cooperation, accurate control and efficient driving of an LED lamp are realized, the LED lamp driving circuit can flexibly adapt to LED lamps with various powers such as 5W, 7W, 10W, 12W, 15W and the like, a universal and efficient driving solution is provided for LED lighting equipment, and the configuration and maintenance process of a lighting system is greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of LED drive, especially to a self -adaptation power's LED intelligent regulation drive circuit. BACKGROUND

[0002] With the vigorous development of smart home lighting, LED lamp types are increasingly rich and varied. However, in the traditional lighting system, each LED lamp must match a specific power driver, which brings many disadvantages:

[0003] 1. User maintenance difficulty: users need to accurately identify and select the appropriate driver, which is complex and tedious, time-consuming and labor-intensive, increasing maintenance difficulty and cost

[0004] 2. Limited replacement and upgrade: when replacing or upgrading LED lamps, it is difficult to find a specific model driver that is perfectly compatible with the original system, which severely limits the selection range of LED lamps and hinders the upgrading and expansion process of the lighting system.

[0005] Therefore, the present application proposes a self-adaptive power LED intelligent regulation drive circuit to solve the above problems. INVENTION CONTENTS

[0006] The utility model aims at providing a self-adaptive power LED intelligent regulation drive circuit, which can adapt to a variety of power lamps with a single drive, effectively solve the driver and lamp matching problem in smart home lighting, reduce user maintenance cost, and improve the flexibility and expansibility of the lighting system.

[0007] The technical scheme of the utility model: a self-adaptive power LED intelligent regulation drive circuit, comprising a single-chip microcomputer, an AC-to-DC circuit, an LDO linear voltage stabilizing circuit, a MOS tube switching circuit and an MCU intelligent control module, the single-chip microcomputer is bidirectionally electrically connected with the AC-to-DC circuit, the AC-to-DC circuit, the LDO linear voltage stabilizing circuit, the MCU intelligent control module and the MOS tube switching circuit are electrically connected in sequence, and the AC-to-DC circuit is connected with the MOS tube switching circuit to convert AC power into DC power for different power lamps.

[0008] Optionally, the input end of the AC-to-DC circuit is connected with AC power, which is rectified and converted into DC power by the rectifier bridge B1 on the AC-to-DC circuit to supply the LDO linear voltage stabilizing circuit and the MCU intelligent control module in sequence.

[0009] Optionally, the MCU intelligent control module sends a PWM signal to the MOS tube switching circuit.

[0010] Optionally, the voltage reducing circuit includes a transformer T1 and a chip U2, the voltage reducing circuit generates two voltage outputs of VDD and VCC after reducing the voltage of DC, wherein the VDD supplies the lamp driving power supply, and the VCC supplies power to the MCU intelligent control module after voltage stabilization processing by the LDO linear voltage stabilizing circuit.

[0011] Optionally, the transformer T1 is an alternating superimposed winding transformer.

[0012] Optionally, the AVDD power supply supplies power to the single-chip microcomputer after smoothing processing by a capacitor C7 and a capacitor C8.

[0013] Optionally, the power adjustment range of the lamp is 5W-15W.

[0014] Compared with the prior art, the application has at least one of the following beneficial technical effects:

[0015] The intelligent control driving system of the utility model is cooperatively constructed by an AC-to-DC circuit, a single-chip microcomputer, an LDO linear voltage stabilizing circuit, a MOS tube switching circuit and an MCU intelligent control module, the components are closely cooperated, and precise control and efficient driving of the LED lamp are realized.

[0016] Further, the LED lamp of various powers such as 5W, 7W, 10W, 12W and 15W can be flexibly adapted, a general and efficient driving solution for the LED lighting equipment is provided, and the configuration and maintenance process of the lighting system are greatly simplified. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A system block diagram of the LED intelligent adjustment driving circuit structure of the utility model is given;

[0018] Figure 2 A whole circuit diagram of the LED intelligent adjustment driving circuit structure of the utility model is given;

[0019] Figure 3 A Figure 2 power supply circuit principle block diagram;

[0020] Figure 4 A Figure 2 current limiting resistor switching circuit principle block diagram;

[0021] Figure 5 A principle block diagram of the MCU intelligent control module and the MOS switch control circuit.

[0022] The drawings show that: 1 is an AC-to-DC circuit; 2 is a single-chip microcomputer; 3 is an LDO linear voltage stabilizing circuit; 4 is a MOS tube switching circuit; and 5 is an MCU intelligent control module. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0024] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0025] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] It should be noted that the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As Figure 1 The utility model provides a kind of self-adapting power's LED intelligent regulation drive circuit, including single-chip microcontroller 2, still including AC converts DC circuit 1, LDO linear voltage stabilizing circuit 3, MOS tube switch circuit 4, MCU intelligent control module 5, the single-chip microcontroller 2 with the AC converts DC circuit 1 bidirectional electrical connection, the AC converts DC circuit 1, LDO linear voltage stabilizing circuit 3, MCU intelligent control module 5, MOS tube switch circuit 4 are sequentially electrically connected, the AC converts DC circuit 1 is connected with MOS tube switch circuit 4, AC alternating current is converted into DC direct current to different power's luminaire power supply, the single-chip microcontroller 2 of the application, AC converts DC circuit 1, LDO linear voltage stabilizing circuit 3, MOS tube switch circuit 4, MCU intelligent control module 5 synergic construction, each component is closely coordinated, realizes the accurate control and efficient drive of LED luminaire.

[0030] In the embodiment, the input end of the AC converts DC circuit 1 is connected with AC alternating current, is converted into DC direct current by the rectifier bridge B1 on the AC converts DC circuit 1 and is sequentially supplied to LDO linear voltage stabilizing circuit 3, MCU intelligent control module 5.The MCU intelligent control module 5 sends PWM signal to the MOS tube switch circuit 4.

[0031] The self-adapting power's LED intelligent regulation drive circuit further includes buck circuit and AVDD power supply, and the AVDD power supply is used for supplying power to the single-chip microcontroller 2 after being smoothed by the capacitor C7 and the capacitor C8. The buck circuit includes a transformer T1 and a chip U2. The buck circuit generates two voltage outputs of VDD and VCC after reducing the voltage of the DC direct current. The VDD is used for supplying power to the luminaire, and the VCC is used for supplying power to the MCU intelligent control module 5 after being stabilized by the LDO linear voltage stabilizing circuit 3. The transformer T1 is an alternating superimposed winding transformer, which can flexibly cope with various input voltages and frequency changes, significantly enhances the adaptability, operating efficiency, stability and reliability of the system, and ensures stable and reliable operation in complex power grid environment.

[0032] Please refer to Figure 2 for the logical relationship and connection mode circuit diagram of each part of the circuit. The details of each part are described in detail as follows:

[0033] As Figure 3is the power supply circuit principle diagram, detailed show rectifier bridge B1, PWM switch chip U1, transformer T1 and other components constitute and voltage output path, explain the power conversion process. After the AC power supply is connected, it is converted into DC through the rectifier bridge B1, and then the voltage is reduced through the voltage reduction circuit composed of chip U2 and transformer T1, generating VDD and VCC two voltage outputs. Among them, VDD directly supplies the lamp driving power supply, and VCC is further stabilized by LDO linear voltage stabilizer 3, and the stable VCC_2 (3.3V) is output to supply power for MCU intelligent control module 5, ensuring the stable operation of each module.

[0034] In Figure 4 is the principle diagram of the current limiting resistor switching circuit, which clearly shows how the single-chip microcomputer 2 realizes power dynamic switching by controlling the current limiting resistor, and embodies the precise power regulation mechanism. The power supply AVDD is smoothed by capacitors C7 and C8 to supply power for the single-chip microcomputer 2. The single-chip microcomputer 2 loads the preset program through the serial communication interface, uses the ADC pin to collect the feedback voltage signal of the primary side of the PWM switch chip U1 and performs data analysis. According to the analysis result, the single-chip microcomputer 2 controls the conduction state of the triode through IO5 to IO9 pins to realize intelligent switching of the current limiting resistor, thereby precisely regulating the output current and power of the PWM switch chip U1, realizing fine current control and meeting the needs of different power lamps.

[0035] As Figure 5 is the principle diagram of the MCU intelligent control module and the MOS tube switching circuit, which explains its connection mode and the principle of realizing dimming function, and shows the intelligent dimming control process. Among them, the connectors J1 and J2 are used as connectors, and the MCU intelligent control module 5 integrates the LoRa wireless module, which can realize wireless intelligent control. The module outputs PWM signal to the gate of MOS tube V1 and V2 in the MOS tube switching circuit 4, precisely controls the on-off state of the MOS tube, realizes the intelligent dimming function, and provides flexible and diverse lighting control experience for users.

[0036] The application uses the analog-to-digital converter ADC built-in the single-chip microcomputer 2 to real-time sample and deeply analyze the primary feedback signal voltage of the AC-to-DC circuit 1 composed of the PWM switch IC. Based on the sampling data, the triode switch is intelligently controlled, and then the current limiting resistor of the PWM switch integrated circuit is dynamically adjusted, achieving accurate dynamic adjustment in the power range of 5W-15W, and accurately adapting to the needs of different power lamps. This intelligent control driving technology can seamlessly adapt to 5W, 7W, 10W, 12W, 15W and other power LED lamps, greatly simplifying the configuration process of the lighting system, reducing maintenance cost and spare parts inventory, and improving the overall reliability and convenience of the system.

[0037] The above specific embodiments are only several optional embodiments of the present application, and based on the technical scheme of the present application and the related enlightenment of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. An adaptive power LED intelligent regulating driving circuit, comprising a single-chip microcomputer (2), characterized in that, It also includes AC to DC circuit (1), LDO linear voltage regulator circuit (3), MOS switch circuit (4), MCU intelligent control module (5), the single-chip microcomputer (2) is connected with the AC to DC circuit (1) bidirectionally, the AC to DC circuit (1), LDO linear voltage regulator circuit (3), MCU intelligent control module (5), MOS switch circuit (4) are connected electrically in turn, the AC to DC circuit (1) is connected with MOS switch circuit (4), converts AC into DC to supply power to different lamps.

2. The adaptive power LED intelligent regulating driving circuit according to claim 1, wherein, The input end of the AC to DC circuit (1) is connected with AC, and is converted into DC by the rectifier bridge B1 on the AC to DC circuit (1) and is sequentially supplied to the LDO linear voltage regulator circuit (3) and the MCU intelligent control module (5).

3. The adaptive power LED intelligent regulating driving circuit according to claim 2, wherein, The MCU intelligent control module (5) sends PWM signal to the MOS switch circuit (4).

4. The adaptive power LED intelligent regulating driving circuit according to claim 3, wherein, It also includes a voltage reduction circuit, which includes transformer T1 and chip U2, and generates VDD and VCC voltage outputs after reducing the voltage of DC, wherein VDD supplies the lamp driving power supply, and VCC supplies power to the MCU intelligent control module (5) after voltage stabilization processing by the LDO linear voltage regulator circuit (3).

5. The adaptive power LED intelligent regulating driving circuit according to claim 4, wherein, The transformer T1 adopts an alternating superposition type winding transformer.

6. The adaptive power LED intelligent regulating driving circuit according to claim 4, wherein, It also includes an AVDD power supply, which supplies power to the single-chip microcomputer (2) after smoothing processing by the capacitor C7 and the capacitor C8.

7. The adaptive power LED intelligent regulating driving circuit according to claim 1, wherein, The power adjustment range of the lamp is 5W-15W.

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