A multi-in-one LED dimming circuit
By integrating multiple dimming methods onto a single circuit board, the problems of complex circuitry, high cost, and difficult installation and maintenance in existing technologies are solved, resulting in a highly integrated and multifunctional LED dimming device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI DONGXUN ELECTRONICS CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-23
AI Technical Summary
In existing LED dimming technologies, multiple dimming methods operate independently, resulting in complex circuits, high costs, and inconvenient installation and maintenance.
Design an all-in-one LED dimming circuit that integrates a power module, a control module, a DMX512 dimming module, a DALI dimming module, a VR dimming module, and an LED driver module. The control module processes and converts different dimming signals and outputs LED control signals to the LED driver module.
It achieves high circuit integration, reduces production costs, simplifies installation and maintenance, improves equipment applicability and stability, and supports various dimming scenarios.
Smart Images
Figure CN224401706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED dimming technology, and in particular to an all-in-one LED dimming circuit. Background Technology
[0002] In existing LED dimming technologies, DMX512 dimming is commonly used in professional fields such as stage lighting, offering advantages such as stable signal transmission and the ability to control a large number of lights. For example, Chinese utility model patent application CN202220986397.6 discloses a construction circuit for LED linear lights with DMX512 intelligent dimming control, relating to the field of intelligent dimming technology. It comprises a control console, a signal amplifier, a DMX512 decoder, a power amplifier, an LED power supply, LED linear lights, an RVVP signal line, and a power supply line. The control console sends a DMX512 signal to the signal amplifier for signal shaping and amplification. The amplified signal is then sent to the corresponding DMX512 decoder. The DMX512 decoder analyzes the received signal and sends a dimming signal to the power amplifier, which then outputs a corresponding current command to the LED linear lights.
[0003] DALI dimming is widely used in intelligent lighting systems, enabling precise individual lamp control and status feedback. For example, Chinese utility model patent application CN202420893745.4 discloses a DALI dimming main control panel, comprising a main control module, a panel, and a DALI module, a dimming knob, and an encoding knob electrically connected to the main control module. The dimming knob is located on the front of the panel, and the encoding knob is located on the back of the panel. A mounting shell is provided on the back of the panel, and the main control module is housed in the mounting shell. The dimming knob sends dimming signals to the main control module by rotating and pressing, changing brightness, color temperature, RGB color, and on / off state. The encoding knob sends DALI address signals to the main control module by rotating. The main control module can perform at least one of monochrome dimming control, color temperature control, RGB control, RGBW control, and RGB+CCT control. The main control module performs corresponding dimming control on lamps at the corresponding addresses based on the dimming signals and the DALI address signals.
[0004] VR dimming, with its convenient manual adjustment method, has found applications in some scenarios. For example, Chinese utility model patent application number CN202120572349.8 discloses an AR / VR switchable dimming module. This module includes a dimming module and a waveguide module for coupling image light to the human eye. The dimming module is disposed on one side of the waveguide module. The dimming module modulates the transmittance of ambient light passing through it. When the waveguide module receives ambient light, the AR / VR switchable dimming module achieves augmented reality display; when ambient light cannot pass through the dimming module, it achieves virtual reality display. This utility model also discloses a display device including the aforementioned AR / VR switchable dimming module. It allows for on-the-spot switching of AR / VR displays without interference from ambient light, resulting in a good user experience.
[0005] However, the aforementioned dimming methods are usually independent of each other, each requiring different dimming circuits and control modules. This not only increases the complexity and cost of the circuits but also makes the installation and maintenance of the equipment difficult, failing to meet the market demand for multifunctional, integrated LED dimming equipment. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide an all-in-one LED dimming circuit to address the above-mentioned defects of the prior art. This circuit aims to solve the problems of multiple dimming modes being independent in the existing LED dimming technology, which leads to complex circuits, high costs, and inconvenient installation and maintenance.
[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0008] An all-in-one LED dimming circuit includes a power supply module, a control module, a DMX512 dimming module, a DALI dimming module, a VR dimming module, and an LED driver module. The control module is electrically connected to the power supply module, the DMX512 dimming module, the DALI dimming module, the VR dimming module, and the LED driver module. The DMX512 dimming module receives DMX512 dimming signals and transmits them to the control module. The DALI dimming module receives DALI dimming signals and transmits them to the control module. The VR dimming module receives manually adjusted VR dimming signals and transmits them to the control module. The control module processes and converts the DMX512 dimming signals, the DALI dimming signals, and the VR dimming signals, and outputs LED control signals to the LED driver module. The LED driver module drives the LED lamp to dim according to the LED control signals.
[0009] Preferably, the control module includes a microprocessor U4, a signal transceiver interface J1, a debugging interface P1, a diode D4, a resistor R25, and a resistor R26, all of which are connected to the microprocessor U4.
[0010] Preferably, the DMX512 dimming module includes a DMX512 signal receiving chip and a signal amplification circuit. The DMX512 signal receiving chip is used to receive DMX512 signals, and the signal amplification circuit is used to amplify the received DMX512 signals to ensure stable transmission of the DMX512 signals.
[0011] Preferably, the DALI dimming module includes a DALI interface circuit and a DALI protocol processing chip. The DALI interface circuit is used to communicate with the DALI control system, and the DALI protocol processing chip is used to receive and process DALI dimming signals.
[0012] Preferably, the VR dimming module includes a potentiometer and a signal conditioning circuit. The potentiometer is used to manually adjust the VR dimming signal, and the signal conditioning circuit is used to condition the VR dimming signal output by the potentiometer to meet the input requirements of the control module.
[0013] Preferably, the LED driving module includes a first LED constant current module, a second LED constant current module, a third LED constant current module, and a fourth LED constant current module, all of which are electrically connected to the control module.
[0014] Preferably, the power module includes an LDO power supply circuit, a DC-DC power supply circuit, and a communication isolation power supply module, all of which are electrically connected to the control module.
[0015] The multi-functional LED dimming circuit provided by this utility model, using the above technical solution, has the following beneficial effects: The control module in this multi-functional LED dimming circuit is electrically connected to the DMX512 dimming module, the DALI dimming module, the VR dimming module, and the LED driver module, respectively. It receives dimming signals from each dimming module, processes and converts the dimming signals, and then outputs LED control signals to the LED driver module. The DMX512 dimming module receives DMX512 dimming signals and transmits them to the control module. The DALI dimming module receives DALI dimming signals and transmits them to the control module. The VR dimming module receives manually adjusted VR dimming signals and transmits them to the control module. This LED driver module is used to drive LED lights for dimming based on the LED control signals output by the control module. By integrating DMX512, DALI, and VR dimming into a single circuit board, it achieves high integration, significantly reducing circuit complexity and the number of components, thus lowering production costs. It supports multiple dimming modes to meet the dimming needs of different scenarios, improving the applicability of the equipment. It is easy to install and maintain; users do not need to install different dimming circuits separately, reducing installation time and workload, and also facilitating later maintenance and upgrades. The control module can process and convert various dimming signals, ensuring the stability and accuracy of dimming, and meeting the market demand for multifunctional, integrated LED dimming equipment. Attached Figure Description
[0016] Figure 1 This is a structural block diagram of the present invention;
[0017] Figure 2 This is a circuit diagram of the control module in this utility model;
[0018] Figure 3 This is a circuit diagram of the power supply module in this utility model;
[0019] Figure 4 This is a partial circuit diagram of the DMX512 dimming module, DALI dimming module, and VR dimming module in this utility model;
[0020] Figure 5 This is a circuit diagram of the LED driver module in this utility model;
[0021] In the diagram, 1-power module, 2-control module, 3-DMX512 dimming module, 4-DALI dimming module, 5-VR dimming module, 6-LED driver module. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0023] like Figure 1-5 As shown, the all-in-one LED dimming circuit includes a power supply module 1, a control module 2, a DMX512 dimming module 3, a DALI dimming module 4, a VR dimming module 5, and an LED driver module 6. The control module 2 is electrically connected to the power supply module 1, the DMX512 dimming module 3, the DALI dimming module 4, the VR dimming module 5, and the LED driver module 6. The DMX512 dimming module 3 receives DMX512 dimming signals and transmits them to the control module 1. The DALI dimming module 4 receives DALI dimming signals and transmits them to the control module 2. The VR dimming module 5 receives manually adjusted VR dimming signals and transmits them to the control module 2. The control module 2 processes and converts the DMX512 dimming signals, DALI dimming signals, and VR dimming signals, and outputs LED control signals to the LED driver module 6. The LED driver module 6 drives the LED lamp to dim according to the LED control signals. Understandably, this utility model adopts a multi-protocol, multi-functional integrated design, integrating power supply, control, and LED driver into one unit, which can adapt to LED drivers for different customers and different scenarios, or effectively control costs by selecting some circuit modules, and can adapt to the application scenarios of LED drivers with different protocols.
[0024] Specifically, the control module 1 includes a microprocessor U4, a signal transceiver interface J1, a debugging interface P1, a diode D4, and resistors R25 and R26. The signal transceiver interface J1, the debugging interface P1, the diode D4, and the resistors R25 and R26 are all connected to the microprocessor U4. It is understood that the microprocessor U4 uses an STM32G030F6P6 chip, capable of recognizing, parsing, and converting DMX512 dimming signals, DALI dimming signals, and VR dimming signals.
[0025] Specifically, the DMX512 dimming module 3 includes a DMX512 signal receiving chip and a signal amplification circuit. The DMX512 signal receiving chip receives DMX512 signals, and the signal amplification circuit amplifies the received DMX512 signals to ensure stable transmission of the DMX512 signals. It is understood that the DMX512 signal receiving chip uses an ST485ER chip. The signal amplification circuit includes an optocoupler U5, an operational amplifier U6, a Zener diode D11, resistors R47 and R48. The operational amplifier U6 is connected to the DMX512 signal receiving chip, the optocoupler U5, the Zener diode D11, and resistors R47 and R48. The optocoupler U5 is connected to the microprocessor U4.
[0026] Specifically, the DALI dimming module 4 includes a DALI interface circuit and a DALI protocol processing chip. The DALI interface circuit is used for communication with the DALI control system, and the DALI protocol processing chip is used to receive and process DALI dimming signals. The DALI interface circuit includes a rectifier bridge D14, optocouplers U10 and U11, transistors Q9 and Q10, and transistor Q11. The rectifier bridge D14 is connected to the DALI protocol processing chip, transistors Q9, Q10, and Q11, respectively. Optocouplers U10 and U11 are connected to the microprocessor U4, transistors Q9, Q10, and Q11, respectively. It is understood that the DALI protocol processing chip is selected to conform to the DALI protocol standard in order to achieve communication with the DALI control system and processing of DALI dimming signals.
[0027] Specifically, the VR dimming module 5 includes a potentiometer and a signal conditioning circuit. The potentiometer is used to manually adjust the VR dimming signal, and the signal conditioning circuit is used to condition the VR dimming signal output by the potentiometer to meet the input requirements of the control module 2. Understandably, the signal conditioning circuit includes resistors R27, R28, R29, and R31, a Zener diode D6, a fuse F1, and a capacitor C25. Resistors R27, R28, R29, and the fuse F1 are all connected to the potentiometer, and resistors R27, R28, R29, R31, and the capacitor C25 are all connected to the microprocessor U4. The potentiometer is a high-precision adjustable resistor, and the signal conditioning circuit includes a filtering circuit and an amplification circuit to filter and amplify the signal output by the potentiometer to meet the input requirements of the control module.
[0028] Specifically, the LED driver module 6 includes a first LED constant current module, a second LED constant current module, a third LED constant current module, and a fourth LED constant current module. All four LED constant current modules are electrically connected to the control module 2. It is understood that the first LED constant current module includes a constant current driver chip U1 and its peripheral circuitry; the second LED constant current module includes a constant current driver chip U2 and its peripheral circuitry; the third LED constant current module includes a constant current driver chip U8 and its peripheral circuitry; and the fourth LED constant current module includes a constant current driver chip U9 and its peripheral circuitry. All four constant current driver chips U1, U2, U8, and U9 use LM3409HV chips and are connected to the microprocessor U4.
[0029] Understandably, when DMX512 dimming is required, the DMX512 signal is transmitted to the control module 1 through the DMX512 dimming module 3. After the control module 1 analyzes and processes the signal, it outputs the corresponding control signal to the LED driver module 6 to achieve LED dimming. When DALI dimming is required, the DALI dimming signal is transmitted to the control module 1 through the DALI dimming module 4. The control module 1 processes the signal according to the DALI protocol and outputs the control signal. When VR dimming is used, the user generates a dimming signal by adjusting the potentiometer. This signal is processed by the VR dimming module 5 and then transmitted to the control module 1. The control module 1 then outputs the control signal to the LED driver module 6.
[0030] Specifically, the power module 1 includes an LDO power supply circuit, a DC-DC power supply circuit, and a communication isolation power supply module, all of which are electrically connected to the control module 2. The LDO power supply circuit includes a voltage regulator D5, model ME6209A33M3G; the DC-DC power supply circuit includes a power management chip U3 and its peripheral circuitry, with the U3 being an SCT2601TVBR chip; the communication isolation power supply module includes a voltage regulator D10 and a power management chip U7, model F0505XT-1WR3_C19188500 chip; and the U10 voltage regulator is model ME6209A33M3G. The power module 1 uses a switching power supply to provide stable 5V and 12V power to the entire circuit.
[0031] It is understood that the above chip models are only examples, and other alternative chip models with the same corresponding functions can also be used. This utility model does not limit the application of these models.
[0032] Understandably, this utility model features a reasonable design and unique structure. By integrating DMX512, DALI, and VR dimming into a single circuit, it forms an integrated circuit board with high integration, significantly reducing circuit complexity and the number of components, thus lowering production costs. It supports multiple dimming modes to meet dimming needs in different scenarios, improving the applicability of the equipment. It is easy to install and maintain; users do not need to install different dimming circuits separately, reducing installation time and workload, and also facilitating later maintenance and upgrades. The control module can process and convert multiple dimming signals, ensuring the stability and accuracy of dimming, and meeting market demand for multifunctional, integrated LED dimming equipment.
[0033] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A multi-functional LED dimming circuit, characterized in that: The system includes a power supply module, a control module, a DMX512 dimming module, a DALI dimming module, a VR dimming module, and an LED driver module. The control module is electrically connected to each of these modules. The DMX512 dimming module receives DMX512 dimming signals and transmits them to the control module. The DALI dimming module receives DALI dimming signals and transmits them to the control module. The VR dimming module receives manually adjusted VR dimming signals and transmits them to the control module. The control module processes and converts the DMX512, DALI, and VR dimming signals and outputs LED control signals to the LED driver module. The LED driver module then drives the LED lamps to dim according to the LED control signals.
2. The all-in-one LED dimming circuit according to claim 1, characterized in that: The control module includes a microprocessor U4, a signal transceiver interface J1, a debugging interface P1, a diode D4, a resistor R25, and a resistor R26. The signal transceiver interface J1, the debugging interface P1, the diode D4, the resistor R25, and the resistor R26 are all connected to the microprocessor U4.
3. The all-in-one LED dimming circuit according to claim 2, characterized in that: The DMX512 dimming module includes a DMX512 signal receiving chip and a signal amplification circuit. The DMX512 signal receiving chip is used to receive DMX512 signals, and the signal amplification circuit is used to amplify the received DMX512 signals to ensure stable transmission of the DMX512 signals.
4. The all-in-one LED dimming circuit according to claim 2, characterized in that: The DALI dimming module includes a DALI interface circuit and a DALI protocol processing chip. The DALI interface circuit is used to communicate with the DALI control system, and the DALI protocol processing chip is used to receive and process DALI dimming signals.
5. The all-in-one LED dimming circuit according to claim 2, characterized in that: The VR dimming module includes a potentiometer and a signal conditioning circuit. The potentiometer is used to manually adjust the VR dimming signal, and the signal conditioning circuit is used to condition the VR dimming signal output by the potentiometer to meet the input requirements of the control module.
6. The all-in-one LED dimming circuit according to claim 2, characterized in that: The LED driving module includes a first LED constant current module, a second LED constant current module, a third LED constant current module, and a fourth LED constant current module, all of which are electrically connected to the control module.
7. The all-in-one LED dimming circuit according to claim 2, characterized in that: The power module includes an LDO power supply circuit, a DC-DC power supply circuit, and a communication isolation power supply module, all of which are electrically connected to the control module.