A 220V AC two-wire power line carrier LED dimming and color tuning system

Abstract

This utility model belongs to the field of photoelectric adjustment technology, specifically relating to a 220V AC two-wire power line carrier LED dimming and color-adjusting system. The dimming scene panel has a built-in signal loader and is connected to a lamp or lamp group via an LED lamp decoder driver with a DIP switch. The dimming scene panel includes a 12V power supply circuit, an MCU power supply circuit, an MCU, an address DIP switch circuit, a communication interface circuit, and a DC-to-AC conversion drive circuit. The MCU is connected to the MCU power supply circuit, the address DIP switch circuit, the communication interface circuit, and the DC-to-AC conversion drive circuit. The MCU power supply circuit is also connected to the 12V power supply circuit, which is further connected to a 0-10V adjustment circuit. The communication interface circuit is also connected to the 0-10V adjustment circuit. This utility model addresses the problems of high cost in traditional PLC systems and unstable signal in wireless systems.

Description

Technical Field

[0001] This utility model belongs to the field of photoelectric adjustment technology, specifically relating to an AC 220V two-wire power line carrier LED dimming and color adjustment system. Background Technology

[0002] In the field of modern lighting, dimming systems are increasingly widely used, playing a crucial role in meeting lighting needs in different scenarios, achieving energy conservation and environmental protection, and enhancing user experience. Existing dimming systems can be mainly divided into three types: wired dimming systems, traditional PLC carrier systems, and wireless systems.

[0003] Wired dimming systems, such as DALI and 0-10V systems, have significant drawbacks. These systems require dedicated signal cabling, which not only substantially increases the overall cost but also significantly raises the difficulty of construction, demanding higher standards of construction techniques and processes.

[0004] Traditional PLC carrier systems rely on dedicated PLC modules, which are quite expensive, directly contributing to the high cost of the entire dimming system. Furthermore, their relatively weak carrier signals are easily affected by external interference and crosstalk, reducing the accuracy and stability of dimming. Moreover, to ensure effective dimming, the AC220 line used for dimming must be a dedicated line and wired separately from other lines (such as power strip lines), undoubtedly increasing the complexity of the wiring.

[0005] Wireless dimming systems, such as the common Bluetooth and Zigbee dimming systems, have also revealed some shortcomings in practical use. The most prominent of these is the unstable signal transmission, which often results in occasional malfunctions of LED lights or multiple LED lights failing to maintain synchronization during dimming, affecting the consistency of lighting effects and reducing user satisfaction.

[0006] In summary, existing dimming systems suffer from varying degrees of shortcomings in terms of cost, installation difficulty, signal stability, and wiring complexity. Therefore, developing a new dimming system that overcomes these drawbacks is of great significance for promoting the development of the lighting industry and meeting market demands for efficient, stable, and low-cost dimming systems. Utility Model Content

[0007] This utility model provides an AC 220V two-wire power line carrier LED dimming and color adjustment system, which saves the cost of modules, avoids the instability of module carriers, and avoids the problem of unstable signal transmission in wireless systems. At the same time, the two power lines also make the system cheaper and easier to install compared to traditional dimming systems with dedicated signal lines.

[0008] This utility model is achieved through the following technical solution:

[0009] A 220V AC two-wire power line carrier LED dimming and color-tuning system, the system comprising a dimming scene panel connected to the power supply voltage, RS485, and lamps or lamp groups respectively;

[0010] The dimming scene panel has a built-in signal loader, and the dimming scene panel is connected to the lamp or lamp group through an LED lamp decoding driver with a DIP switch;

[0011] The dimming scene panel includes a 12V power supply circuit, an MCU power supply circuit, an MCU, an address DIP switch circuit, a communication interface circuit, and a DC-to-AC drive circuit.

[0012] The MCU is connected to the MCU power supply circuit, the address dialing circuit, the communication interface circuit, and the DC-to-AC drive circuit. The MCU power supply circuit is also connected to the 12V power supply circuit, the 12V power supply circuit is also connected to the 0-10V adjustment circuit, and the communication interface circuit is connected to the 0-10V adjustment circuit.

[0013] Furthermore, the signal loader converts the dimming signal into an asynchronous serial digital signal;

[0014] The internal storage of the RSRS485 can be programmed according to user needs, combining the states of multiple devices into a single scene.

[0015] Furthermore, the RSRS485 is connected to a signal loader, which is connected in parallel with multiple lights or light groups. Each light or light group is equipped with an LED light decoder driver. The LED light decoder driver contains a DIP switch. Each DIP switch is set according to the location of each light or light group to realize different lighting combinations for different scenarios.

[0016] Furthermore, when the lamp is a light strip, the voltage signal output by the signal loader is 0-24V, and each light strip is connected to the signal loader through an LED lamp decoder driver with a DIP switch.

[0017] Furthermore, the signal loader receives a 220V AC power input and a two-wire RS485 signal input. Based on the two-wire RS485 signal, it determines whether to receive this data by setting the address of the DIP switch in the signal loader. If the data is received, it controls the 220V AC power output to the lamp, lamp group, or lamp strip with the corresponding address setting.

[0018] Furthermore, the combination of the lamps or lamp groups is the number of scene selections of the RSRS485.

[0019] An adjustable combination lighting system uses an AC 220V two-wire power line carrier LED dimming and color-changing system as described above.

[0020] The beneficial effects of this utility model are:

[0021] In terms of cost, this utility model reduces hardware costs and reliance on expensive dedicated modules, thereby lowering the overall cost and making it more affordable for more users.

[0022] In terms of construction difficulty, this utility model can adopt a simpler installation method, reducing the need for professional construction personnel and complex construction processes. It can be easily installed in both new buildings and renovations of existing buildings.

[0023] Regarding signal stability, this invention utilizes advanced signal transmission technology and anti-interference design to ensure stable transmission of dimming signals, avoiding problems such as LED light malfunction and dimming asynchrony, thereby improving lighting effects and user experience.

[0024] This invention can break through the limitations of traditional wiring, realize a more flexible wiring method, and reduce wiring costs and workload.

[0025] This invention uses AC 220V. The loading circuit needs to be equipped with an AC phase detection circuit. It is essential to load data within the accurate range of the AC voltage; otherwise, the loaded data will be corrupted, causing the decoder to be unable to extract the signal.

[0026] The decoding of this invention is obtained from the AC signal.

[0027] This utility model's AC PLC directly uses the wiring layout of a conventional light control switch panel, which is much simpler than that of a conventional AC PLC. This alone reduces on-site construction costs by more than half compared to an AC PLC, and makes maintenance and replacement much more convenient. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This invention relates to the address dialing circuit of the magnetic lamp decoding power supply circuit.

[0030] Figure 3 This utility model relates to the MCU power supply circuit of the loader and panel integrated main controller.

[0031] Figure 4 This utility model relates to the MCU circuit of a loader and panel integrated main controller.

[0032] Figure 5 This utility model relates to the button and indicator light circuit of the loader and panel combined main controller.

[0033] Figure 6 This utility model relates to a Bluetooth wireless receiving circuit for a combined loader and panel controller.

[0034] Figure 7 This utility model relates to a DC-to-AC drive circuit for a combined loader and panel controller.

[0035] Figure 8 This utility model relates to an overcurrent protection circuit for a combined loader and panel controller.

[0036] Figure 9 This utility model relates to an AC-to-DC circuit for a combined loader and panel controller.

[0037] Figure 10 This utility model includes a synchronous signal detection circuit, a digital signal isolation transmission circuit, and a zero-crossing signal detection circuit for a loader and panel integrated main controller.

[0038] Figure 11 This invention relates to an asynchronous serial digital signal detection circuit for a constant current LED downlight decoder driver.

[0039] Figure 12 This invention relates to an LED constant current drive circuit for a constant current LED downlight decoder driver.

[0040] Figure 13 This utility model relates to the MCU power supply circuit of the constant current LED downlight decoder driver.

[0041] Figure 14 This invention relates to the address DIP switch circuit of a constant current LED downlight decoder driver.

[0042] Figure 15 This utility model relates to the MCU circuit of a constant current LED downlight decoder driver.

[0043] Figure 16 This is the DC-to-AC drive circuit A of the magnetic lamp decoding power supply circuit of this utility model.

[0044] Figure 17 This is the DC-to-AC drive circuit B of the magnetic lamp decoding power supply circuit of this utility model.

[0045] Figure 18 This invention relates to the MCU power supply circuit for the magnetic lamp decoding power supply circuit.

[0046] Figure 19 This invention relates to an asynchronous serial digital signal detection circuit for a magnetic lamp decoding power supply circuit.

[0047] Figure 20 This invention relates to the MCU circuit of the magnetic lamp decoding power supply circuit.

[0048] Figure 21 This invention relates to the address dialing circuit of the magnetic lamp decoding power supply circuit. Detailed Implementation

[0049] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of this application with unnecessary detail.

[0050] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0051] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0052] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0054] Implementation

[0055] This embodiment provides an AC 220V two-wire power line carrier LED dimming and color adjustment system, such as Figure 1 As shown, the dimming asynchronous serial digital signal (baud rate is not limited, such as 1000-19200 baud rate, encoding method is not limited, such as Manchester encoding) is directly loaded into the AC circuit (AC voltage is not limited, such as 110V-220V) through the H-bridge chopper circuit. The chopper-loaded digital chopper signal is also AC. This method can realize the transmission of signals while outputting energy without interruption. The system includes a signal loader that is connected to the power supply voltage, RS485, lamp or lamp group respectively.

[0056] The signal loader is connected to the lamp or lamp group via an LED lamp decoder driver with a DIP switch;

[0057] The signal loader is powered by a DC power supply and outputs 220V AC power.

[0058] Loader + Panel Integrated Main Controller Section: Function: It converts digital signals (asynchronous serial signals with baud rates of 2500-9600-19200) including address, dimming, color adjustment, and gradient delay into digital AC power through the H-bridge power drive circuit and the H-bridge chopper circuit, and outputs it to the subsequent decoding driver. It is also responsible for receiving dimming signals from other expansion panels and APPs, and is the control core of the entire dimming system.

[0059] The signal loader includes a 12V power supply circuit, an MCU power supply circuit, an MCU, an address DIP switch circuit, a communication interface circuit, and a DC-to-AC drive circuit.

[0060] The MCU is connected to the MCU power supply circuit, the address dialing circuit, the communication interface circuit, and the DC-to-AC drive circuit. The MCU power supply circuit is also connected to the 12V power supply circuit, the 12V power supply circuit is also connected to the 0-10V adjustment circuit, and the communication interface circuit is connected to the 0-10V adjustment circuit.

[0061] Furthermore, the signal loader is used to parse the dimming command digital signal sent by the RS485 bus or wireless master control, and determine whether to receive the data according to the address setting of the local DIP switch.

[0062] The internal storage of the RSRS485 can be programmed according to user needs, combining the states of multiple devices into a single scene.

[0063] Furthermore, the RSRS485 is connected to a signal loader, which is connected in parallel with multiple lights or light groups. Each light or light group is equipped with an LED light decoder driver. The LED light decoder driver contains a DIP switch. Each DIP switch is set according to the location of each light or light group to realize different lighting combinations for different scenarios.

[0064] The LED lamp decoding driver extracts the digital signal from the AC power output by the loader and converts the AC power into DC power through a full-bridge rectifier, thereby providing power to the LED constant current drive circuit. The magnitude of the current output to the LED is controlled by the digital dimming signal, thereby realizing the dimming and color adjustment function.

[0065] A single loader can simultaneously drive LED light decoder drivers. The number of decoders that a loader can connect to is determined by the loader's output power and the total power of the decoders it drives.

[0066] Furthermore, when the lamp is a light strip, the voltage signal output by the signal loader is 0-24V, and each light strip is connected to the signal loader through an LED lamp decoder driver with a DIP switch.

[0067] Specifically, such as Figure 1 As shown, a dimming system based on an AC PLC constant current decoder LED light decoder driver is disclosed. The dimming system includes an RS485, a signal loader, an AC PLC constant current decoder LED light decoder driver, and a light load. The RS485 is connected to the signal loader, and the signal loader is connected in parallel with multiple AC PLC constant current decoder LED light decoder drivers. Address DIP switches are added to the AC PLC constant current decoder LED light decoder driver, and each AC PLC constant current decoder LED light decoder driver is connected to a light load.

[0068] Furthermore, such as Figure 11-16 As shown, the AC PLC constant current decoding LED driver includes an LED constant current driving circuit, an MCU power supply circuit, an asynchronous serial digital signal detection circuit, an address DIP switch circuit, and an MCU unit.

[0069] The MCU unit is connected to the MCU power supply circuit, the address dialing circuit, the LED constant current drive circuit and the asynchronous serial digital signal detection circuit, respectively. The AC PLC constant current decoder LED lamp decoder driver is connected to the constant current loader and multiple lamps or multiple lamp groups or multiple lamp strips, respectively.

[0070] Furthermore, the LED constant current driving circuit includes an LEDA+ terminal connected to an asynchronous serial digital signal detection circuit. The LEDA+ terminal is connected to one end of inductor L1. The other end of inductor L1 is connected to the + terminal of inductor CE1, the LED+ terminal, one end of inductor L2, the + terminal of inductor CE2, and one end of inductor L4. The other end of inductor L4 is connected to the LED+ terminal.

[0071] The negative terminals of diode D400 and diode D300 are respectively connected to one end of inductor CE1, one end of capacitor C1, one end of resistor R2, one end of capacitor C2, terminals 1-3 of switch SW1, one end of resistor RS2, one end of capacitor C3, one end of capacitor C5, terminal 8 of chip U1, and terminal 7 of chip U1.

[0072] The other end of capacitor C1 is connected to one end of resistor R1, one end of resistor R3, and terminal 3 of chip U1; the other end of resistor R1 is connected to 5V; the other end of resistor R3 is connected to terminal 1 of chip U1; the other end of resistor R2 is connected to the other end of capacitor C2, the DIM terminal, and terminal 2 of chip U1; the other end of resistor RS2 is connected to one end of resistor RS3, one end of resistor RS4, one end of resistor RS5, and terminal 4 of chip U1; the other ends of resistor RS3, resistor RS4, and... The other end of resistor RS5 is connected to terminals 6-4 of switch SW1. Terminal 6 of chip U1 is connected to terminal 5 of chip U1, the other end of capacitor C3, the positive terminal of diode D2, one end of resistor R4, and one end of inductor L3. The other end of resistor R4 is connected to one end of capacitor C4. The other end of capacitor C4 is connected to the other end of inductor L2 and the negative terminal of diode D2. The other end of inductor L1 is connected to the negative terminal of inductor CE2, the other end of capacitor C5, the positive terminal of Zener diode ZD1, and one end of capacitor C6.

[0073] Furthermore, the positive terminal of the Zener diode ZD1 is connected to the other end of capacitor C6, one end of resistor R5, terminal 1, terminal 2, terminal 5 of chip U2, one end of resistor R6, terminal 1 and terminal 3 of chip O1, respectively. The other end of resistor R5 is connected to the LED+ terminal, and the other end of resistor R6 is connected to terminal 7, terminal 8 and C- of chip O1, respectively. The positive terminal of chip U2... Terminal 4 is connected to terminal 2 of chip O1. Terminal 5 of chip O1 is connected to terminal 6 and W- of chip O1 respectively. Terminal 4 of chip O1 is connected to terminal 3 of chip U2. Terminal 6 of chip U2 is connected to one end of resistor R7 and the CCT terminal respectively. Terminal 7 of chip U2 is connected to one end of resistor R9 and one end of capacitor C7 respectively. Terminal 8 of chip U2 is connected to the other end of resistor R7 and the ground terminal respectively.

[0074] The other end of the resistor R9 is connected to terminal 3 of the transistor Q2. Terminal 1 of the transistor Q2 is connected to the negative terminal of the Zener diode ZD2 and one end of the resistor R8. The other end of the resistor R8 is connected to terminal 2 of the transistor Q2 and LED+.

[0075] The positive terminal of the Zener diode ZD2 is grounded, and the other end of the capacitor C7 is grounded.

[0076] Furthermore, the LIN terminal of the asynchronous serial digital signal detection circuit is connected to the anode of diode D1. The cathode of diode D1 is connected to one end of resistor R13 and the D terminal of transistor Q3. The other end of resistor R13 is connected to the anode of diode D5 after being connected in series with resistor R16. The cathode of diode D5 is connected to the cathode of Zener diode ZD3 and one end of resistor R25. The other end of resistor R25 is connected to one end of capacitor C16 and the G terminal of transistor Q3. The S terminal of transistor Q3 is connected to terminal 1 of chip Q4 and one end of resistor R15. The other end of resistor R15 is connected to terminals 2 and 4 of chip Q4. Terminal 5 of chip Q4 is connected to terminal 6 of chip Q4 and one end of resistor R27. Terminal 3 of chip Q4 is connected to terminal 1 of PC1.

[0077] The positive terminal of the Zener diode ZD3 is connected to the other end of capacitor C16, the other end of resistor R27, and terminal 3 of PC1, and then grounded.

[0078] Terminal 6 of PC1 is connected to the 5V terminal, one end of capacitor C12, one end of resistor R14, and one end of resistor R23. Terminal 5 of PC1 is connected to the other end of resistor R23, one end of capacitor C13, one end of resistor R24, and one end of resistor R26. The other end of resistor R26 is connected to the base (B) terminal of transistor Q5. The other end of resistor R14 is connected to the collector (C) terminal of transistor Q5 and terminal 3 of chip U4. The emitter (E) terminal of transistor Q5 is connected to the other ends of capacitor C12, capacitor C13, and resistor R26, and then grounded.

[0079] Furthermore, the MCU is chip U4. Terminal 1 of chip U4 is connected to resistor R21 and then to the CCT terminal. Terminal 1 of chip U4 is connected to resistor R28 and then to ground. Terminal 7 of chip U4 is grounded. Terminal 9 of chip U4 is connected to the 5V terminal and one end of capacitor C15. The other end of capacitor C15 is grounded. Terminal 17 of chip U4 is connected to resistor R22 and then to the DIM terminal. Terminal 18 of chip U4 is connected to terminal 2 of interface J1. Terminal 4 of chip U4 is connected to terminal 4 of interface J1, one end of resistor R20, and one end of capacitor C14. Terminal 8 of chip U4 is connected to terminal 5 of interface J1.

[0080] The other end of the resistor R20 is connected to the 5V terminal, and the other end of the capacitor C14 is grounded.

[0081] Furthermore, the MCU power supply circuit includes chip U3. Terminal 4 of chip U3 is connected to one end of capacitor C8 and the LED+ terminal, respectively. The other end of capacitor C8 is grounded. Terminal 5 of chip U3 is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C9, the cathode of diode D3, one end of inductor L5, terminal 2 of chip U3, and terminal 1 of chip U3.

[0082] The other end of capacitor C9 is connected to terminal 3 of chip U3 and the negative terminal of diode D4. The other end of inductor L5 is connected to the positive terminal of diode D4, one end of capacitor C10, one end of capacitor C11, one end of resistor R11 and the 5V terminal. The positive terminal of diode D3 is connected to the other end of capacitor C10, the other end of capacitor C11, the other end of resistor R11 and the ground terminal.

[0083] Furthermore, the address switching circuit includes a DIP switch SW2. Terminals 4, 5, and 6 of the DIP switch SW2 are all connected to a 5V terminal. Terminal 1 of the DIP switch SW2 is connected to terminal 13 of the chip U3 via the ADD1 terminal. Terminal 2 of the DIP switch SW2 is connected to terminal 12 of the chip U3 via the ADD2 terminal. Terminal 3 of the DIP switch SW2 is connected to terminal 11 of the chip U3 via the ADD3 terminal.

[0084] Terminal 1 of the DIP switch SW2 is also connected to one end of resistor R19, terminal 2 of the DIP switch SW2 is also connected to one end of resistor R18, terminal 3 of the DIP switch SW2 is also connected to one end of resistor R17, and the other end of resistor R19 is connected to the other ends of resistor R18 and resistor R17 respectively and then grounded.

[0085] like Figure 16-21 As shown, the AC PLC constant current decoding LED driver includes a 12V power supply circuit, an MCU power supply circuit, an MCU, an address DIP switch circuit, a communication interface circuit, and a DC-to-AC drive circuit.

[0086] The MCU is connected to the MCU power supply circuit, the address dialing circuit, the communication interface circuit, and the DC-to-AC drive circuit. The MCU power supply circuit is also connected to the 12V power supply circuit, the 12V power supply circuit is also connected to the 0-10V adjustment circuit, and the communication interface circuit is connected to the 0-10V adjustment circuit.

[0087] Furthermore, the DC-to-AC drive circuit includes chip U6 and chip U7. Terminal 1 of chip U6 is connected to the 15V input terminal, one end of capacitor C10, and the positive terminal of diode D4. The other end of capacitor C10 is connected to terminal 4 of chip U6 and then grounded. The negative terminal of diode D4 is connected to terminal 8 of chip U6 and one end of capacitor CE3. The other end of capacitor CE3 is connected to terminal 6 of chip U6, terminal 3 of transistor Q3, the source terminal of transistor Q2, the drain terminal of transistor Q7, the A- terminal of LED, and one diode group. The transistor Q3 is connected to the following terminals: terminal 1 of the transistor Q3 is connected to terminal 7 of the chip U6 and one end of the resistor R15; the other end of the resistor R15 is connected to terminal 2 of the transistor Q3 and the gate terminal of the transistor Q2; the drain terminal of the transistor Q2 is connected to the VIN terminal; terminal 5 of the chip U6 is connected to one end of the resistor R20 and terminal 1 of the transistor Q8; the other end of the resistor R20 is connected to terminal 2 of the transistor Q8 and the gate terminal of the transistor Q7; and terminal 3 of the transistor Q8 is connected to the CS terminal and the source terminal of the transistor Q7.

[0088] Terminal 1 of chip U7 is connected to the 15V input terminal, one end of capacitor C12, and the positive terminal of diode D5. The other end of capacitor C12 is connected to terminal 4 of chip U7 and then grounded. The negative terminal of diode D5 is connected to terminal 8 of chip U7 and one end of capacitor CE4. The other end of capacitor CE4 is connected to terminal 6 of chip U7, terminal 3 of transistor Q10, the source terminal of transistor Q9, the drain terminal of transistor Q11, the LEDB- terminal, and the other end of the diode group. Terminal 1 of transistor Q10 is connected to terminal 7 of chip U7 and one end of resistor R15. The other end of resistor R15 is connected to terminal 2 of transistor Q10 and terminal G of transistor Q9. Terminal D of transistor Q9 is connected to terminal VIN. Terminal 5 of chip U7 is connected to one end of resistor R20 and terminal 1 of transistor Q12. The other end of resistor R20 is connected to terminal 2 of transistor Q12 and terminal G of transistor Q11. Terminal 3 of transistor Q12 is connected to terminal CS, one end of resistor R30, one end of resistor R31, and terminal S of transistor Q11. The other end of resistor R30 is connected to the other end of resistor R31 and then grounded.

[0089] The diode group includes two parallel diode series groups. Each diode series group includes 6 diodes, with the cathode of the left diode connected to the drain terminal of transistor Q7 and the anode of the right diode connected to the drain terminal of transistor Q7; or the anode of the left diode connected to the drain terminal of transistor Q7 and the cathode of the right diode connected to the drain terminal of transistor Q7.

[0090] Furthermore, the HIN terminal is connected to terminal 3 of transistor Q1, terminal 2 of transistor Q1 is grounded, and terminal 1 of transistor Q1 is connected to one end of resistor R14.

[0091] The LIN terminal is connected to terminal 3 of transistor Q5, terminal 2 of transistor Q5 is grounded, and terminal 1 of transistor Q55 is connected to one end of resistor R18.

[0092] The other end of resistor R14 is connected to the other end of resistor R18, terminal 3 of transistor Q4, and one end of resistor R19. Terminal 2 of transistor Q4 is connected to one end of resistor R16 and the 3V3 terminal. Terminal 1 of transistor Q4 is connected to one end of resistor R17. The other end of resistor R17 is connected to the SP terminal and the other end of resistor R16 and terminal 3 of transistor Q6. The other end of resistor R19 is connected to one end of resistor R21, one end of capacitor C11, one end of resistor R23, terminal 1 of transistor Q6, and the unlock terminal. The other end of resistor R23 is connected to the other end of capacitor C11 and terminal 2 of transistor Q6, and then grounded.

[0093] The LIN terminal is connected to the D terminal of transistor Q13 and one end of resistor R25. The other end of resistor R25 is connected to the 5V voltage terminal. The G terminal of transistor Q13 is connected to one end of resistor R27. The other end of resistor R27 is connected to the UART_TX terminal and one end of resistor R29. The other end of resistor R27 is connected to the HIN terminal. The S terminal of transistor Q13 is grounded.

[0094] Furthermore, the MCU is chip U3, the unlock terminal of the DC-to-AC drive circuit is connected to terminal 11 of chip U3, the UART_TX terminal of the DC-to-AC drive circuit is connected to terminal 2 of chip U3, and the SP terminal of the DC-to-AC drive circuit is connected to terminal 14 of chip U3.

[0095] Furthermore, the MCU power supply circuit includes a chip U2. Terminal 3 of the chip U2 is connected to one end of resistor R7 and one end of capacitor C2. The other end of resistor R7 is connected to a voltage of 12V. The other end of capacitor C2 is connected to terminal 2 of the chip U2 and one end of capacitor C3 and then grounded. The other end of capacitor C3 is connected to terminal 1 of the chip U2 and a voltage of 5V.

[0096] Terminal 3 of chip U2 is connected to terminal 1 of chip U5, terminal 2 of chip U2 is connected to terminal 1 of chip U5, and terminal 20 of chip U2 is connected to terminals 2 and 3 of chip U5.

[0097] Furthermore, the 12V power supply circuit includes a VIN terminal, which is connected to 48V, one end of capacitor C33, one end of capacitor C34, one end of capacitor C35, and the positive terminal of diode D1. The negative terminal of diode D1 is connected to one end of resistor R6. The other end of resistor R6 is connected to one end of capacitor CE1 and one end of inductor L2. The other end of inductor L2 is connected to one end of resistor R1, one end of capacitor CE1, and terminal 2 of chip U1. The other end of resistor R1 is connected to one end of capacitor C1 and the VDD terminal of chip U1. The other end of capacitor C33 is connected to the other ends of capacitor C34, capacitor C35, capacitor CE1, and capacitor CE2, and then grounded.

[0098] The other end of capacitor C1 is grounded. The CS terminal of chip U1 is connected to one end of resistor R2. The other end of resistor R2 is connected to terminal 4 of chip U1, the cathode of diode D2, and one end of inductor L3. The anode of diode D2 is grounded. The other end of inductor L3 is connected to one end of resistor R3, one end of inductor C4, one end of inductor C5, one end of resistor R5, and the 12V terminal.

[0099] The other end of resistor R3 is connected to one end of resistor R4 and VFB terminal respectively, and the other end of resistor R4 is grounded;

[0100] The other end of the inductor C4 is connected to the other end of the inductor C4 and the other end of the resistor R5, and then grounded.

[0101] Furthermore, the address dialing circuit includes a dialer SW1. Terminals 4, 5, and 6 of the dialer SW1 are all connected to a 5V terminal. Terminal 1 of the dialer SW1 is connected to terminal 17 of the chip U3 via the ADD1 terminal. Terminal 2 of the dialer SW1 is connected to terminal 16 of the chip U3 via the ADD2 terminal. Terminal 31 of the dialer SW1 is connected to terminal 15 of the chip U3 via the ADD3 terminal. Terminal 1 of the dialer SW1 is connected to one end of resistor R11. Terminal 2 of the dialer SW1 is connected to one end of resistor R12. Terminal 3 of the dialer SW1 is connected to one end of resistor R13. The other end of resistor R11 is connected to the other ends of resistors R12 and R13 respectively and then grounded.

[0102] Furthermore, the communication interface circuit includes a chip 5. Terminal 8 of the chip 5 is connected to one end of resistor R9 and a 5V voltage terminal, terminal 7 of the chip 5 is connected to the other end of resistor R9 and terminal 1 of interface J1, terminal 6 of the chip 5 is connected to one end of resistor R10 and terminal 2 of interface J1, and terminal 5 of the chip 5 is connected to the other end of resistor R10 and then grounded.

[0103] When the LIN / LIN pin of chip U6 or U7 receives an input signal, the internal circuitry of the chip generates a corresponding output signal based on the input signal. When the input signal causes the chip's HO pin to output a high level and the LO pin to output a low level, the high-level signal drives the corresponding MOSFET to conduct (such as Q2 or Q9) through a resistor and transistor, while the low-level signal turns off another MOSFET (such as Q7 or Q11). In this way, current can flow to the load through the conducting MOSFET, thereby controlling the load. By controlling the chip's input signals, functions such as switching the load on and off and dimming it can be achieved.

[0104] When an input signal is received in the circuit, it first acts on the base of transistor Q5, controlling the base current of Q1 and thus affecting the current between the collector and emitter of Q1. The emitter current of Q1 is transmitted to the base of Q4 through resistor R11. After being amplified or level-shifted by Q4, it is then transmitted to the base of Q3 through resistor R16, and finally the processed signal is output at the emitter of Q3. Capacitor C11 may filter the output signal to obtain a more stable and pure signal.

[0105] Figure 11-15 As shown, the constant current LED downlight decoder driver consists of: a decoding circuit: extracting the digital dimming signal from the serial AC-AC power output from the loader;

[0106] The MCU processing circuit receives and processes the dimming information sent by the main controller, compares it with the set address of the local DIP switch, and only processes instructions sent to this address, outputting PWM dimming and color modulation signals to the constant current circuit.

[0107] The main power supply section, also known as the isolated AC / DC circuit, converts the input AC power with chopper information into DC power through a full-bridge circuit, and then converts it into isolated 40-100V low-voltage DC power.

[0108] The LED constant current drive circuit receives the PWM dimming signal from the MCU and outputs a DC constant current signal that can drive the LED lamp.

[0109] The auxiliary power supply circuit is responsible for providing a low-voltage 3.3V or 5V power supply to the MCU digital circuit.

[0110] By operating switch SW1, the voltage levels of nodes ADD1, ADD2, and ADD3 can be changed, thereby enabling control of subsequent circuits or signal output. The presence of pull-down resistors ensures that the nodes remain stably at a low voltage level when the switch is not connected to a high voltage level (5V), avoiding uncertain voltage levels and improving the reliability and stability of the circuit.

[0111] In RS-485 communication, multiple devices communicate via the RS-485 bus. When a device in this circuit needs to receive data, an external control signal sets DIRECTION low, and chip U5 enters receive mode. The differential signal on the RS-485 bus is input to the chip through pins A and B. The chip converts it into a single-ended signal and outputs it from pin RO for subsequent circuit processing. When a device needs to send data, an external control signal sets DIRECTION high, and chip U5 enters transmit mode. The data to be sent is input from pin DI, and the chip converts it into a differential signal and sends it to the RS-485 bus through pins A and B, enabling data communication with other devices.

[0112] The constant voltage LED strip decoder and driver power supply are divided into:

[0113] Decoding circuit: Extracts the digital dimming signal from the AC output of the loader.

[0114] The MCU processing circuit receives and processes the dimming information sent by the main controller, compares it with the set address of the local DIP switch, and only processes instructions sent to this address, outputting PWM dimming and color modulation signals to the constant current circuit.

[0115] The main power supply section, also known as the isolated AC / DC circuit, converts the input AC power with chopping information into DC power through a full-bridge circuit, and then converts it into isolated 12V, 24V or 48V low-voltage DC power.

[0116] The constant voltage LED strip driver circuit receives the PWM dimming signal from the MCU and outputs a DC constant current signal that can drive the LED lamp.

[0117] The auxiliary power supply circuit is responsible for providing a low-voltage 3.3V or 5V power supply to the MCU digital circuit.

[0118] Figure 16-21 As shown, the magnetic lamp decoding power supply is divided into (basically the same as the constant voltage decoding drive circuit, but the output target is different; this decoding drive outputs a 48V carrier signal to drive the magnetic drive, while the constant voltage drive outputs a constant voltage lamp strip):

[0119] Decoding circuit: Extracts the digital dimming signal from the AC output of the loader.

[0120] The MCU processing circuit receives and processes the dimming information sent by the main controller, and forwards the dimming information to the subsequent H-bridge circuit.

[0121] The main power supply section, also known as the isolated AC / DC circuit, converts the input AC power with chopping information into DC power through a full-bridge circuit, and then converts it into isolated 48V low-voltage DC power.

[0122] The constant voltage LED strip driver circuit receives the PWM dimming signal from the MCU and outputs a DC constant current signal that can drive the LED lamp.

[0123] The auxiliary power supply circuit is responsible for providing a low-voltage 3.3V or 5V power supply to the MCU digital circuit.

[0124] Implementation

[0125] This embodiment provides an AC 220V two-wire power line carrier LED dimming and color adjustment system, which differs from the first embodiment in that the signal loader is removed. That is, the system includes RSRS485 connected to the power supply voltage, lamp or lamp group respectively.

[0126] The working principle is shown in the figure below: The input 220V AC is superimposed with a digital signal and output to the next-level LED driver. The output waveform is ±220V sine wave + digital chopper, and the output waveform is ±220V square wave. +220V represents digital 1 and -220V represents digital 0.

[0127] Implementation

[0128] An adjustable combination lighting system uses an AC 220V two-wire power line carrier LED dimming and color-changing system as described in Embodiment 1.

Claims

1. A 220V AC two-wire power line carrier LED dimming and color-tuning system, characterized in that, The system includes a dimming scene panel that is connected to the power supply voltage, RS485, and lamps or lamp groups respectively. The dimming scene panel has a built-in signal loader, and the dimming scene panel is connected to the lamp or lamp group through an LED lamp decoding driver with a DIP switch; The dimming scene panel includes a 12V power supply circuit, an MCU power supply circuit, an MCU, an address DIP switch circuit, a communication interface circuit, and a DC-to-AC conversion drive circuit. The MCU is connected to the MCU power supply circuit, the address dialing circuit, the communication interface circuit, and the DC-to-AC drive circuit. The MCU power supply circuit is also connected to the 12V power supply circuit, the 12V power supply circuit is also connected to the 0-10V adjustment circuit, and the communication interface circuit is connected to the 0-10V adjustment circuit.

2. The system according to claim 1, characterized in that, The signal loader converts the dimming signal into an asynchronous serial digital signal; The internal storage of the RSRS485 can be programmed according to user needs, combining the states of multiple devices into a single scene.

3. The system according to claim 2, characterized in that, The RSRS485 is connected to a signal loader, which is connected in parallel with multiple lights or groups of lights. Each light or group of lights is equipped with an LED light decoder driver. The LED light decoder driver contains a DIP switch. Each DIP switch is set according to the location of each light or group of lights to realize different lighting combinations for different scenarios.

4. The system according to claim 1, characterized in that, When the light is a light strip, the voltage signal output by the signal loader is 0-24V, and each light strip is connected to the signal loader through an LED light decoder driver with a DIP switch.

5. The system according to claim 1, characterized in that, The signal loader receives a 220V AC power input and a two-wire RS485 signal input. Based on the two-wire RS485 signal, it determines whether to receive the data by setting the address of the DIP switch in the signal loader. If the data is received, it controls the 220V AC power output to the lamp, lamp group, or lamp strip with the corresponding address setting.

6. The system according to claim 1, characterized in that, The combination of the lights or light groups is the number of scene selections of the RSRS485.

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