Automatic dimming LED lighting driver
By integrating a microcontroller and multiple sensors into an automatic dimming system, the problem of existing LED drivers being unable to adapt to complex environmental changes is solved, achieving high-precision dimming and intelligent control, and improving the stability and safety of LED lighting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-24
AI Technical Summary
Existing LED drivers cannot dynamically adapt to complex environmental changes and lack comprehensive judgment of multiple parameters, resulting in poor lighting effects, easy overheating, and shortened lifespan.
An automatic dimming system composed of a microcontroller, constant current drive circuit, PWM dimming module, wireless communication module, photosensitive sensor, infrared human body sensor and sound sensor, combined with a multi-sensor data fusion algorithm, realizes real-time detection of ambient light, human infrared signal and sound, dynamically adjusts the LED brightness, and actively dissipates heat through thermally conductive copper sheet and heat sink.
It achieves high-precision dimming, fast response without brightness jumps, supports remote control and data feedback, improves the intelligence and safety of LED lighting, and extends its service life.
Smart Images
Figure CN224037541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to LED lighting technical field, concretely relates to a kind of automatic dimming LED lighting driver. BACKGROUND
[0002] LED lighting is generally white light and super white light LED mainly. With the maturity and continuous development of white light LED technology, LED lighting has gradually become the mainstream of lighting industry. Especially some developed countries such as Europe and America have led the popularization of LED lighting. LED lighting not only has the advantages of small power consumption, long service life, low heat radiation, stable light emission, but also small pollution, environmental protection and other modern development concepts. Since the electrical characteristics of LED is that its light output is proportional to driving current, the qualitative requirement of driving power is high. If LED works under non-constant current, it will lead to unstable light emission, poor lighting effect, easy damage and reduce its service life. Therefore, stable and reliable driving circuit is one of the cores of LED lighting equipment.
[0003] The existing LED driver usually relies on manual adjustment or simple photosensitive sensor control, cannot dynamically adapt to complex environmental changes, such as human movement, multi-light source interference, lacks comprehensive judgment mechanism for multiple parameters, such as ambient light, human infrared signal, time mode, use effect is poor, and most of the LED drivers are natural heat dissipation, which easily affects the service life of electronic components due to local overheating. Therefore, we propose an automatic dimming LED lighting driver. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing an automatic dimming LED lighting driver to solve the problems proposed in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: an automatic dimming LED lighting driver, comprising a driver body, a microcontroller, a constant current driving circuit, a PWM dimming module and a wireless communication module are arranged on the inner side of the driver body, a photosensitive sensor is arranged on the outer side of the driver body, positioning holes are arranged on the surface of the driver body, an upper shell is arranged above the driver body, an infrared human sensor and a sound sensor are arranged on the surface of the upper shell, fixing holes are arranged on the surface of the upper shell, screws are arranged on the inner side of the fixing holes, mounting holes are arranged on the two sides of the driver body, heat-conducting copper sheets are arranged on the inner side of the mounting holes, and heat sinks are arranged on one side of the heat-conducting copper sheets.
[0006] Preferably, the microcontroller, the PWM dimming module, the constant current driving circuit and the wireless communication module are electrically connected respectively.
[0007] Preferably, the outer side of the driver body is embedded with a photosensitive sensor, the photosensitive sensor is electrically connected with the microcontroller, and the surface of the driver body is provided with positioning holes at four corners.
[0008] Preferably, the surface of the upper shell is embedded with an infrared human body sensor and a sound sensor, and the infrared human body sensor and the sound sensor are respectively electrically connected with the microcontroller.
[0009] Preferably, the upper shell and the driver body are fixedly connected through screws, and the both sides of the surface of the driver body are provided with mounting holes.
[0010] Preferably, the inner side of the mounting hole is fixedly provided with a heat-conducting copper sheet, and one side of the heat-conducting copper sheet is fixedly connected with a heat sink.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] 1. High-precision dimming: multiple sensors cooperate to eliminate single signal interference (such as other light source fluctuations).
[0013] 2. Fast response: millisecond-level PWM adjustment, avoiding brightness jump feeling.
[0014] 3. Intelligence: supporting user wireless device connection, realizing remote control and data feedback. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is an internal structure schematic view of the driver body of the utility model;
[0016] Fig. 2 It is an overall structure schematic view of the utility model;
[0017] Fig. 3 It is an overall explosion structure schematic view of the utility model.
[0018] In the drawing: 1, driver body; 2, microcontroller; 3, constant-current drive circuit; 4, PWM dimming module; 5, wireless communication module; 6, photosensitive sensor; 7, upper shell; 8, infrared human body sensor; 9, sound sensor; 10, positioning hole; 11, fixed hole; 12, screw; 13, mounting hole; 14, heat-conducting copper sheet; 15, heat sink. DETAILED DESCRIPTION
[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0020] Please refer to Figs. 1-3 The utility model provides a technical scheme: an automatic light modulation LED lighting driver, including driver body 1, the inside of driver body 1 is equipped with microcontroller 2, constant current drive circuit 3, PWM light modulation module 4 and wireless communication module 5, the outside of driver body 1 is equipped with photosensitive sensor 6, the surface of driver body 1 is equipped with positioning hole 10, the top of driver body 1 is equipped with upper casing 7, the surface of upper casing 7 is equipped with infrared human body sensor 8 and sound sensor 9, the surface of upper casing 7 is equipped with fixed hole 11, the inside of fixed hole 11 is equipped with screw 12, the both sides of driver body 1 are equipped with mounting hole 13, the inside of mounting hole 13 is equipped with heat conduction copper sheet 14, one side of heat conduction copper sheet 14 is equipped with radiating fin 15.
[0021] Specifically, microcontroller 2 and PWM light modulation module 4, constant current drive circuit 3, wireless communication module 5 are electrically connected respectively, photosensitive sensor 6 is embedded and installed on the outside of driver body 1, photosensitive sensor 6 is electrically connected with microcontroller 2, positioning hole 10 is formed in the surface of driver body 1 at four corners, infrared human body sensor 8 and sound sensor 9 are embedded and installed on the surface of upper casing 7, infrared human body sensor 8 and sound sensor 9 are electrically connected with microcontroller 2 respectively, upper casing 7 and driver body 1 are fixedly connected through screw 12, mounting hole 13 is formed on the surface of the both sides of driver body 1 and penetrates, heat conduction copper sheet 14 is fixedly installed on the inside of mounting hole 13, radiating fin 15 is fixedly connected on one side of heat conduction copper sheet 14.
[0022] In the embodiment, the wireless communication module 5 can support Bluetooth / Wi-Fi communication, and can be connected with a mobile phone application or a smart home system to realize remote control and data feedback. The photosensitive sensor 6, such as BH1750, can monitor the ambient light intensity in real time. The infrared human body sensor 8 and the sound sensor 9 can detect human movement and sound generated by the outside world in real time, trigger the PWM light modulation module 4, and the constant current drive circuit 3 chip, such as AL8860, can control the LED current. When the infrared human body sensor 8 detects human movement and the ambient light is lower than the threshold value, the LED brightness is automatically increased to the preset value. In combination with the photosensitive sensor 6, the brightness can be dynamically adjusted according to the traffic flow at night to improve the balance, energy saving and safety of the device.
[0023] When the inside of the driver body 1 generates heat, the heat will be absorbed by the heat-conducting copper sheet 14 inside the mounting hole 13, and then the heat on the surface of the heat-conducting copper sheet 14 will be absorbed by the outer heat dissipation fin 15 and transmitted to the outside, so that the effect of active heat dissipation is realized;
[0024] The microcontroller 2 generates dimming instructions through a multi-sensor data fusion algorithm, controls a PWM dimming module 4 to output a duty ratio, and integrates a wireless communication module 5 to support data interaction with external equipment.
[0025] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An automatic dimming LED lighting driver, comprising a driver body (1), characterized in that: The inner side of the driver body (1) is provided with a microcontroller (2), a constant current drive circuit (3), a PWM dimming module (4) and a wireless communication module (5). The outer side of the driver body (1) is provided with a photosensitive sensor (6). The surface of the driver body (1) is provided with a positioning hole (10). The upper housing (7) is provided on the top of the driver body (1). The surface of the upper housing (7) is provided with an infrared human body sensor (8) and a sound sensor (9). The surface of the upper housing (7) is provided with a fixing hole (11). The inner side of the fixing hole (11) is provided with a screw (12). The two sides of the driver body (1) are provided with mounting holes (13). The inner side of the mounting hole (13) is provided with a heat-conducting copper sheet (14). The side of the heat-conducting copper sheet (14) is provided with a heat sink (15).
2. The automatic dimming LED lighting driver according to claim 1, characterized in that: The microcontroller (2) is electrically connected to the PWM dimming module (4), the constant current drive circuit (3), and the wireless communication module (5).
3. The automatic dimming LED lighting driver according to claim 1, characterized in that: A photosensitive sensor (6) is embedded on the outside of the driver body (1). The photosensitive sensor (6) is electrically connected to the microcontroller (2). Positioning holes (10) are provided at the four corners of the surface of the driver body (1).
4. The automatic dimming LED lighting driver according to claim 1, characterized in that: An infrared human body sensor (8) and a sound sensor (9) are embedded in the surface of the upper housing (7), and the infrared human body sensor (8) and the sound sensor (9) are electrically connected to the microcontroller (2).
5. The automatic dimming LED lighting driver according to claim 1, characterized in that: The upper housing (7) is fixedly connected to the driver body (1) by screws (12), and mounting holes (13) are provided on both sides of the driver body (1).
6. The automatic dimming LED lighting driver according to claim 1, characterized in that: A heat-conducting copper sheet (14) is fixedly installed on the inner side of the mounting hole (13), and a heat sink (15) is fixedly connected to one side of the heat-conducting copper sheet (14).