Full-mode universal dimming device based on multi-channel parallel control

Abstract

The invention provides a full-mode universal dimming device based on multi-path parallel control, and the device comprises a wired signal conversion unit which is a configurable modular circuit, and is used for carrying out the signal conversion of a wired dimming signal, and outputting a wired dimming control signal; the wireless dimming unit is used for receiving and outputting the wireless dimming control signal; the panel input unit is used for converting local dimming operation into a panel dimming control signal and outputting the panel dimming control signal; the main control unit receives dimming control signals in parallel through a data channel, and processes the first received dimming control signal as an effective dimming signal in a dimming period so as to output a dimming instruction to the dimming power supply circuit; and the dimming power supply circuit responds to the dimming instruction to carry out LED dimming and / or color modulation. Wireless dimming, wired dimming and panel dimming are integrated with the dimming power supply through multi-path parallel control, and the effect of improving the universality and installation flexibility of the dimming device is achieved.

Description

Technical Field

[0001] This invention relates to the field of dimming power supply technology, and specifically to a universal dimming device based on multi-channel parallel control. Background Technology

[0002] LED dimming power supplies are an important component of lighting systems. With technological advancements and diversified market demands, various dimming methods have emerged, each with its own advantages. Based on the signal transmission method and control terminal form within the lighting system, they can generally be categorized into wired dimming, wireless dimming, and panel dimming. Wired dimming relies on physical lines to transmit dimming control signals. Its advantages include good signal transmission stability and anti-interference capabilities, but its disadvantages include poor wiring and installation flexibility and higher costs. Wireless dimming transmits dimming control signals via wireless communication protocols. Its advantages include flexible and convenient installation and remote control capabilities, making it suitable for smart homes. Its disadvantages include signal transmission stability and anti-interference dependence on the network environment. Panel dimming typically involves dimming operations via a smart control panel fixed to the wall. Its advantages include providing an intuitive and convenient local control method, but its disadvantages include fixed installation location and inability to achieve mobile control.

[0003] Currently, most dimming products design the dimming power supply as an independent actuator. Users select the appropriate mode of dimmer for dimming control based on their application scenario. However, this separate design of the dimming power supply and control components requires users to separately install power cables and signal control cables or wireless receiving devices. For example, DALI dimming in wired dimming requires a separate DALI main controller, bus power supply, and dimming power supply to work together to achieve dimming functionality; wireless dimming requires the installation of wireless receiving devices and network debugging; 0-10V dimming requires an additional dimming controller or dimming panel, connected to the dimming power supply via a dedicated signal cable. This significantly increases system complexity and installation costs, especially for complex lighting systems requiring multi-mode control. Furthermore, the lack of interoperability between the various dimming methods necessitates complex technical operations when replacing or upgrading different dimming products, increasing the cost and barrier to entry for product use.

[0004] Furthermore, in the production of dimming products, when there is widespread incompatibility of dimming modes or changes in market demand, it is usually necessary to completely replace the entire dimming solution and redesign the electrical layout. Redesigning different dimming products for different dimming modes not only significantly increases R&D costs and time but also makes it difficult to adjust quickly and increases the burden on production management. A single mode is not conducive to rapid product iteration and diversified production, and also results in poor product versatility.

[0005] Therefore, there is an urgent need to design a universal dimming device that is compatible with various dimming modes, so as to improve the versatility and flexibility of dimming product design, reduce R&D costs and product iteration cycles, and improve the installation and user experience of end users. Summary of the Invention

[0006] To address the common problems in existing technologies, the present invention aims to provide a universal dimming device based on multi-channel parallel control. This invention integrates wireless dimming, wired dimming, and panel dimming with a dimming power supply through multi-channel parallel control, thereby achieving compatibility with different dimming control modes, improving the versatility and flexibility of dimming device design, reducing R&D costs and product iteration cycles, and improving installation and user experience.

[0007] The present invention achieves the above objectives through the following technical solutions: A universal dimming device based on multi-channel parallel control includes a housing with a circuit board inside. A control panel is mounted on the circuit board, which integrates a wired signal conversion unit, a wireless dimming unit, a panel input unit, a main control unit, and a dimming power supply circuit. The wired signal conversion unit is a configurable modular circuit, including any one or more of DALI dimming circuits, DMX dimming circuits, KNX dimming circuits, and 0-10V dimming circuits. It receives wired dimming signals through a signal port, converts the wired dimming signals, and outputs wired dimming control signals to the first data channel of the main control unit. The panel input unit converts local dimming operations into panel dimming control signals and outputs them to the second data channel of the main control unit. The main control unit receives multiple dimming control signals in parallel through the aforementioned data channels and processes the first received dimming control signal as a valid signal within a dimming cycle to output a dimming command to the dimming power supply circuit. The dimming power supply circuit responds to the dimming command to perform LED dimming and / or color adjustment.

[0008] The multi-mode universal dimming device based on multi-channel parallel control provided by the present invention further includes the wireless dimming unit, which establishes a wireless communication connection with the mobile device and is used to receive wireless dimming control signals and output them to the third data channel of the main control unit. The main control unit receives and processes the multi-channel dimming control signals in parallel through the first data channel, the second data channel and the third data channel.

[0009] The multi-mode universal dimming device based on multi-channel parallel control provided by the present invention further includes an output open / short circuit detection unit. The output open / short circuit detection unit is connected to the dimming power supply circuit and is used to collect the open circuit signal and / or short circuit signal of the circuit and output it to the main control module to realize the output status detection and output protection of the dimming power supply.

[0010] According to the multi-channel parallel control-based all-mode universal dimming device provided by the present invention, the DALI dimming circuit includes a signal receiving circuit and a signal transmitting circuit. The signal receiving circuit is used to receive DALI bus signals and output the wired dimming control signal to the main control unit according to the voltage level of the DALI bus signals. The signal transmitting circuit is used to receive DALI data from the main control unit and send it to the DALI bus.

[0011] The multi-mode universal dimming device based on multi-channel parallel control provided by the present invention further includes a D4i power detection unit. The D4i power detection unit is an extension circuit based on the DALI-2 protocol, which is connected to the dimming power supply circuit and is used for power detection of the circuit and outputting detection data to the main control module. The power detection items include input voltage, input current, input power, PF value, input frequency, output voltage, output current, and output power.

[0012] The multi-mode universal dimming device based on multi-channel parallel control provided by the present invention further includes a bus and a control unit. The bus and control unit is connected to the power supply voltage and connected to the main control module. Its output terminal is connected to the input terminal of the DALI dimming circuit, and is used to provide power to the DALI bus with a specific voltage range and current range through the internal energy conversion circuit and controlled circuit.

[0013] According to the multi-channel parallel control-based all-mode universal dimming device provided by the present invention, the DALI dimming circuit further has a PUSH dimming mode. In the PUSH dimming mode, the DALI dimming circuit converts the input PUSH signal into a pulse signal and parses the wired dimming control signal according to the number of pulse signals or the duration of their high and low levels.

[0014] According to the multi-channel parallel control-based all-mode universal dimming device provided by the present invention, the DMX dimming circuit receives the DMX differential signal and converts the DMX differential signal into the wired dimming control signal with the same voltage platform as the main control unit.

[0015] The KNX dimming circuit receives KNX bus signals and converts the KNX bus signals into wired dimming control signals with the same voltage platform as the main control unit.

[0016] The 0-10V dimming circuit receives a voltage signal and uses it to divide the voltage signal or convert it into a PWM signal for input to the main control unit.

[0017] According to the multi-channel parallel control-based all-mode universal dimming device provided by the present invention, the main control unit is compatible with DALI, DMX and KNX protocols, and automatically identifies the protocol type by analyzing the signal characteristics of the wired dimming control signal, so as to call the corresponding protocol for signal parsing.

[0018] When the wired signal conversion unit is configured as a single-mode dimming circuit, the switching between different mode dimming circuits is connected to the main control unit through the same first data channel.

[0019] According to the multi-mode universal dimming device based on multi-channel parallel control provided by the present invention, the wireless dimming unit is connected to the main control unit and performs data interaction through a serial communication interface, SPI interface, I2C interface, PWM interface or analog signal interface.

[0020] According to the multi-channel parallel control-based universal dimming device provided by the present invention, the panel input unit is a configurable circuit, including any one of a knob circuit, a DIP switch circuit, a button circuit, an NFC circuit, a sliding resistor voltage divider circuit, a touch sensing circuit, and a touch sensing circuit.

[0021] The rotary encoder circuit outputs two phase difference pulse signals to the main control unit. The main control unit analyzes the rotation direction based on the phase difference pulse signals and determines the rotation speed and / or displacement based on the pulse frequency or number, so as to generate a panel dimming control signal with corresponding dimming and color adjustment levels.

[0022] The multi-mode universal dimming device based on multi-channel parallel control provided by the present invention further includes a parameter setting unit, which is connected to the main control unit and realizes panel input and / or output parameter setting through local operation on the control panel. The local operation items include one or more of DIP switches, NFC, knobs, buttons, touch screens, and touch control methods. The parameter setting items include one or more of output voltage, output current, output frequency, output power, dimming curve, device address, scene output, and power protection threshold.

[0023] According to the multi-mode universal dimming device based on multi-channel parallel control provided by the present invention, the dimming power supply circuit is connected to the main control unit and performs data interaction through a serial communication interface, SPI interface, I2C interface, PWM interface or analog signal interface. It is a configurable circuit, including any one of a DC-DC constant current dimming circuit, a MOS chopper dimming circuit, and a voltage dimming circuit.

[0024] According to the multi-mode universal dimming device based on multi-channel parallel control provided by the present invention, when the dimming power supply circuit executes a dimming command from any one of the wired signal conversion unit, the wireless dimming unit and the panel input unit, the main control module generates a dimming status signal according to the dimming result, and sends the dimming status signal to an external wireless device through the wireless dimming unit to synchronously update the display status.

[0025] Therefore, compared with the prior art, the present invention has the following beneficial effects: 1. This invention integrates a wired signal conversion unit, a wireless dimming unit, and a panel input unit into a device, and connects to the main control unit through an independent data channel to achieve full-mode dimming control. Different wired dimming modes are configured as modules to achieve compatibility of multiple dimming circuits, which greatly improves the product's versatility and application scenario flexibility. Product upgrades do not require changes to wiring or hardware replacement, effectively reducing the complexity and upgrade cost of the overall system.

[0026] 2. The main control unit of this invention simultaneously monitors wired, wireless, and panel data channels through parallel control, and processes the first received dimming control signal as the valid signal. This design avoids system chaos that may result from receiving multiple conflicting commands simultaneously. Furthermore, it allows the wired, wireless, and panel dimming control methods to serve as backups for each other, ensuring normal dimming operation even if a path fails. This enhances the reliability of the entire lighting control system and enriches the dimming modes, providing consistent and timely responses regardless of whether operation is performed via a mobile app, wall panel, or professional control console.

[0027] 3. The main control unit of this invention generates a dimming status signal based on the dimming result and sends the status information to an external wireless device for display synchronization through a wireless dimming unit. This enables users to remotely monitor the actual working status of the lights in real time, and facilitates remote diagnosis and predictive maintenance by facility managers. It also makes it easier to quickly locate faulty lights and view energy consumption data, thereby improving management efficiency and reducing operation and maintenance costs.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0029] Figure 1 This is a circuit diagram of an embodiment of a universal dimming device based on multi-channel parallel control according to the present invention.

[0030] Figure 2 This is a schematic diagram of a wired signal conversion unit in an embodiment of a multi-mode universal dimming device based on multi-channel parallel control according to the present invention.

[0031] Figure 3This is a schematic diagram of an embodiment of the universal dimming device based on multi-channel parallel control according to the present invention. Figure 1 .

[0032] Figure 4 This is a schematic diagram of the control panel structure of an embodiment of a universal dimming device based on multi-channel parallel control according to the present invention.

[0033] Figure 5 This is a schematic diagram of an embodiment of the universal dimming device based on multi-channel parallel control according to the present invention. Figure 2 .

[0034] Figure 6 This is a schematic diagram of multi-channel parallel control in an embodiment of a universal dimming device based on multi-channel parallel control according to the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] See Figure 1-2This invention provides a universal dimming device based on multi-channel parallel control, comprising a housing 100, within which a circuit board 200 is housed, on which a control panel 300 is mounted. The circuit board integrates a wired signal conversion unit 10, a wireless dimming unit 20, a panel input unit 30, a main control unit 40, and a dimming power supply circuit 50. The wired signal conversion unit 10 is a configurable modular circuit, including any one or more of DALI dimming circuits, DMX dimming circuits, KNX dimming circuits, and 0-10V dimming circuits. It receives wired dimming signals through a signal port and converts the wired dimming signals to output wired dimming signals. The light control signal is sent to the first data channel of the main control unit 40; the panel input unit 30 is used to convert the local dimming operation into a panel dimming control signal and output it to the second data channel of the main control unit 40; the wireless dimming unit 20 establishes a wireless communication connection with the mobile device and is used to receive the wireless dimming control signal and output it to the third data channel of the main control unit 40; the main control unit 40 receives multiple dimming control signals in parallel through the above data channels, and processes the first received dimming control signal as a valid signal within a dimming cycle to output a dimming command to the dimming power supply circuit 50; the dimming power supply circuit 50 responds to the dimming command to perform LED dimming and / or color adjustment.

[0038] See Figure 3-4 In one embodiment, a control panel 300 is provided on the front side of the housing 100. The control panel 300 is electrically connected to a circuit board 200, which is located on the back side of the control panel 300. The control panel 300 is equipped with a switch controller 320, a brightness controller 310, and a color temperature controller 330, which are used to control the on / off state of the lamps, adjust the brightness of the lamps, and adjust the color temperature of the lamps, respectively. The switch controller 320 is a rocker switch, while the brightness controller 310 and the color temperature controller 330 are both sliding potentiometers. The specific structure of the panel input control circuit is determined by the controller on the control panel 300. For example, if the controller is a rotary encoder, the panel input control circuit is a rotary encoder circuit; if it is a button, it is a button circuit; and if it is a touch screen, it is a touch screen driver circuit.

[0039] See Figure 5 In another embodiment, the housing 100 is a semi-closed housing with one end open, and its cavity contains a circuit board 200. The control panel 300 is a knob panel, which is separately set from the housing 100. The knob panel and the housing 100 can be separately installed by pressing the rotating post of the knob panel through the through hole and pressing it into the mating hole.

[0040] Specifically, in this embodiment, the multiple I / O ports and / or serial ports corresponding to the first, second, and third data channels of the main control unit 40 are all configured in input mode, and the three channels independently and simultaneously detect the level changes of the corresponding pins. If multiple complex inputs are configured simultaneously, a serial bus expansion chip is added to expand the number of available serial ports and realize the reception of more parallel signals.

[0041] See Figure 6 Specifically, in this embodiment, the first data channel, the second data channel, and the third data channel are each configured with an external interrupt triggered by either a rising edge or a falling edge. An interrupt is triggered immediately when any of these signals is valid. The channel experiencing the interrupt is identified by reading the interrupt flag register.

[0042] Specifically, in this embodiment, when the main control module detects a valid signal within a dimming cycle, it latches the signal state, sets the signal validity flag, and records the channel where the current valid signal is located.

[0043] In this embodiment, an output open / short circuit detection unit is also included. The output open / short circuit detection unit is connected to the dimming power supply circuit and is used to collect the open circuit signal and / or short circuit signal of the circuit and output it to the main control module to realize the output status detection and output protection of the dimming power supply.

[0044] Specifically, the output open / short circuit detection unit described in this embodiment includes a sampling circuit, an amplification circuit, a comparison circuit, and a short-circuit protection circuit. The sampling circuit is connected to the output terminal of the dimming power supply circuit and is used to sample the voltage and current signals at the output terminal in real time, and amplify the signals through the amplification circuit. The comparison circuit is used to compare the sampled signal with a preset threshold and output the comparison result to the main control unit. The main control unit issues a short-circuit protection command based on the comparison result, and the short-circuit protection circuit operates accordingly to achieve short-circuit protection of the circuit.

[0045] In this embodiment, the DALI dimming circuit includes a signal receiving circuit, a signal transmitting circuit, and a signal conversion chip. The signal receiving circuit receives DALI bus signals and outputs the wired dimming control signal to the main control unit 40 according to the voltage level of the DALI bus signals. The signal transmitting circuit receives DALI data from the main control unit 40 and sends it to the DALI bus. The signal conversion chip is compatible with the DALI 2.0 communication protocol and is used for overvoltage and overcurrent protection of the DALI bus.

[0046] In this embodiment, the signal receiving circuit includes a current limiting circuit, a first optocoupler DU1, and a first transistor Q1. The first input terminal of the first optocoupler DU1 is connected to the DALI bus signal through the current limiting circuit, its second input terminal is connected to the signal input terminal and voltage detection terminal of the signal conversion chip, and its output terminal is connected to the base of the first transistor Q1. The emitter of the first transistor Q1 is connected to the power supply voltage, and its collector is connected to the first data channel of the main control unit 40.

[0047] Specifically, in this embodiment, the current limiting circuit is used to precisely regulate the current and prevent overcurrent caused by the DALI bus being idle, which could burn out the device.

[0048] Specifically, in this embodiment, when the DALI bus signal is high, current flows through the input terminal of the first optocoupler DU1, and its output pin is short-circuited. At this time, the first transistor Q1 is turned off, and the input of the DALI dimming circuit to the main control unit 40 is a low-level signal. When the DALI bus signal is low, no current flows through the input terminal of the first optocoupler DU1, and its output pin is in an open-circuit state. At this time, the first transistor Q1 is turned on, and the input of the DALI dimming circuit to the main control unit 40 is a high-level signal.

[0049] Specifically, in this embodiment, the DALI bus voltage is 16V, with a high-level range of 9.5V-22.5V and a low-level range of -6.5V-6.5V. When the DALI bus voltage is lower than its low-level range, DALI communication is shut down. When the DALI bus voltage is higher than its high-level range, the signal receiving circuit performs level conversion and isolation, converting the DALI bus signal to a 3.3V or 5V logic level compatible with the main control unit 40, and effectively suppressing interference on the bus.

[0050] Specifically, the signal input terminal of the DALI dimming circuit described in this embodiment also includes a reverse connection protection circuit. When the DALI bus signal is input to the signal port through an external dimmer or dimming system, the DB1 bridge rectifier serves as the reverse connection protection circuit. It includes a bridge circuit composed of four diodes connected together. When the input signal is connected to the two AC pins of the bridge rectifier, the output of the V+ terminal through the bridge circuit is always a positive voltage, and the V- terminal is grounded.

[0051] Specifically, the signal transmission circuit in this embodiment includes a second optocoupler DU2 and a resistor R10. The first input terminal of the second optocoupler DU2 is connected to the power supply voltage through the resistor R10, its second input terminal is connected to the data transmission terminal of the main control unit 40, its first output terminal is connected to the signal transmission terminal of the signal conversion chip, and its second output terminal is grounded. When the data transmission terminal of the main control unit 40 is low, current flows through the input terminal of the second optocoupler DU2, its output terminal pin is shorted, the signal transmission terminal of the signal conversion chip is grounded, and its internal logic control unit pulls its DALI bus signal input pin low, so the DALI bus voltage is low. When the data transmission terminal of the main control unit 40 is high, no current flows through the input terminal of the second optocoupler DU2, its output terminal pin is open, the signal transmission terminal of the signal conversion chip is high, its DALI bus signal input pin is floating, and the DALI bus voltage is high or controlled by other DALI nodes.

[0052] In this embodiment, the signal conversion chip also has a PUSH dimming mode. The DALI dimming mode and the PUSH dimming mode are switched according to the detection voltage of the DALI bus signal. In the PUSH dimming mode, the signal conversion chip converts the input PUSH signal into a pulse signal and parses the wired dimming control signal according to the number of pulse signals or the duration of their high and low levels.

[0053] Specifically, in this embodiment, when the detected DALI bus signal is a DC voltage of 9.5V-22.5V, it switches to DALI dimming mode. When an AC voltage greater than 22.5V is detected, it switches to PUSH dimming mode.

[0054] Specifically, in this embodiment, if two consecutive short pulses are detected within a short period of time, with a pulse duration between 50ms and 600ms, it is interpreted as a double-click, used to switch between brightness adjustment and color temperature adjustment modes; if a high level is detected for a longer period of time, with a pulse duration greater than 1000ms, it is interpreted as a long press, used to control the continuous change of brightness or color temperature.

[0055] In this embodiment, the DMX dimming circuit receives the DMX differential signal and converts the DMX differential signal into the wired dimming control signal with the same voltage platform as the main control unit 40.

[0056] Specifically, the DMX dimming circuit in this embodiment includes an RS485 transceiver chip and an impedance matching circuit. The circuit front end converts the DMX differential signal into a UART serial signal through the RS485 transceiver chip and transmits it using RS485 differential signal. The impedance matching circuit is used for impedance matching to eliminate signal reflection.

[0057] The KNX dimming circuit receives KNX bus signals and converts the KNX bus signals into wired dimming control signals with the same voltage platform as the main control unit 40.

[0058] Specifically, the KNX dimming circuit in this embodiment includes a KNX transceiver, which is used to process the complex KNX TP protocol stack and establish a communication connection with the main control unit 40 through a UART or SPI interface.

[0059] The 0-10V dimming circuit receives a voltage signal and uses it to divide the voltage signal or convert it into a PWM signal for input to the main control unit 40.

[0060] Specifically, the 0-10V dimming circuit in this embodiment includes an isolation circuit, an operational amplifier circuit, and a resistor divider circuit. The voltage signal is filtered by an RC low-pass filter circuit and then input to the input terminal of the operational amplifier circuit. The operational amplifier circuit is used to amplify the voltage signal to the target 0-10V range and output it to the resistor divider circuit. The resistor divider circuit divides the 0-10V voltage signal and outputs the wired dimming control signal with the same voltage platform as the main control unit 40.

[0061] In this embodiment, the main control unit 40 is compatible with DALI, DMX and KNX protocols. It automatically identifies the protocol type by analyzing the signal characteristics of the wired dimming control signal, and calls the corresponding protocol for signal parsing.

[0062] When the wired signal conversion unit 10 is configured as a single-mode dimming circuit, the switching between different modes of dimming circuits is connected to the main control unit 40 through the same first data channel.

[0063] In this embodiment, the wireless dimming unit 20 is connected to the main control unit 40 and performs data interaction through a serial communication interface, SPI interface, I2C interface, PWM interface or analog signal interface.

[0064] In this embodiment, the panel input unit 30 is a configurable circuit, including any one of a knob circuit, a DIP switch circuit, a button circuit, an NFC circuit, a sliding resistor voltage divider circuit, a touch sensing circuit, and a touch sensing circuit.

[0065] The rotary encoder circuit outputs two phase difference pulse signals to the main control unit 40. The main control unit 40 analyzes the rotation direction based on the phase difference pulse signals and determines the rotation speed and / or displacement based on the pulse frequency or number, so as to generate a panel dimming control signal with corresponding dimming and color adjustment levels.

[0066] In this embodiment, the dimming power supply circuit 50 is connected to the main control unit 40 and performs data interaction through a serial communication interface, SPI interface, I2C interface, PWM interface or analog signal interface. It is a configurable circuit, including any one of a DC-DC constant current dimming circuit, a MOS chopper dimming circuit, and a voltage dimming circuit.

[0067] Specifically, the dimming power supply circuit 50 in this embodiment includes an AC-DC conversion unit, a dimming execution unit, and a D4i power detection unit. The AC-DC conversion unit is connected to the LED power supply and is used to convert AC power into DC power output. It can be a single-stage circuit or a multi-stage circuit. The single-stage circuit includes a single-stage circuit topology such as a BOOST circuit and a FLYBACK circuit, while the multi-stage circuit includes a hybrid circuit of a BOOST circuit and a DC-DC conversion circuit. The D4i power detection unit is connected to the AC-DC conversion unit, the main control unit 40, and the dimming execution unit. Its detection parameters include input voltage, input current, input power, power factor (PF), input frequency, output voltage, output current, and output power.

[0068] In this embodiment, when the dimming power supply circuit 50 executes a dimming command from any one of the wired signal conversion unit 10, the wireless dimming unit 20, and the panel input unit 30, the main control module generates a dimming status signal based on the dimming result and sends the dimming status signal to an external wireless device through the wireless dimming unit 20 to synchronously update the display status.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A universal dimming device based on multi-channel parallel control, characterized in that, include: The housing contains a circuit board with a control panel. The circuit board integrates a wired signal conversion unit, a panel input unit, a main control unit, and a dimming power supply circuit. The wired signal conversion unit is a configurable modular circuit, including any one or more of DALI dimming circuits, DMX dimming circuits, KNX dimming circuits, and 0-10V dimming circuits. It receives wired dimming signals through a signal port, converts the wired dimming signals, and outputs wired dimming control signals to the first data channel of the main control unit. The panel input unit converts local dimming operations into panel dimming control signals and outputs them to the second data channel of the main control unit. The main control unit receives multiple dimming control signals in parallel through the aforementioned data channel, and processes the first received dimming control signal as a valid signal within a dimming cycle to output a dimming command to the dimming power supply circuit. The dimming power supply circuit responds to the dimming command to dim and / or adjust the color of the LED.

2. The all-mode universal dimming device based on multi-channel parallel control according to claim 1, characterized in that, Also includes: A wireless dimming unit establishes a wireless communication connection with a mobile device to receive wireless dimming control signals and output them to the third data channel of the main control unit. The main control unit receives and processes multiple dimming control signals in parallel through the first data channel, the second data channel and the third data channel.

3. The all-mode universal dimming device based on multi-channel parallel control according to claim 1, characterized in that, Also includes: An output open / short circuit detection unit is connected to the dimming power supply circuit. It is used to collect the open circuit signal and / or short circuit signal of the circuit and output it to the main control module to realize the output status detection and output protection of the dimming power supply.

4. The all-mode universal dimming device based on multi-channel parallel control according to claim 1, characterized in that: The DALI dimming circuit includes a signal receiving circuit and a signal transmitting circuit. The signal receiving circuit is used to receive DALI bus signals and output the wired dimming control signal to the main control unit according to the voltage level of the DALI bus signals. The signal transmitting circuit is used to receive DALI data from the main control unit and send it to the DALI bus.

5. The all-mode universal dimming device based on multi-channel parallel control according to claim 4, characterized in that, Also includes: The D4i power detection unit is an extension circuit based on the DALI-2 protocol. It is connected to the dimming power supply circuit and is used for power detection of the circuit and outputting detection data to the main control module. The power detection items include input voltage, input current, input power, PF value, input frequency, output voltage, output current, and output power.

6. The all-mode universal dimming device based on multi-channel parallel control according to claim 4, characterized in that, Also includes: The bus and control unit is connected to the power supply voltage and the main control module. Its output terminal is connected to the input terminal of the DALI dimming circuit. It is used to provide power to the DALI bus within a specific voltage and current range through the internal energy conversion circuit and controlled circuit.

7. The all-mode universal dimming device based on multi-channel parallel control according to claim 4, characterized in that: The DALI dimming circuit also has a PUSH dimming mode. In the PUSH dimming mode, the DALI dimming circuit converts the input PUSH signal into a pulse signal and parses the wired dimming control signal according to the number of pulse signals or the duration of their high and low levels.

8. The all-mode universal dimming device based on multi-channel parallel control according to claim 1, characterized in that: The DMX dimming circuit receives the DMX differential signal and converts the DMX differential signal into the wired dimming control signal with the same voltage platform as the main control unit. The KNX dimming circuit receives KNX bus signals and converts the KNX bus signals into wired dimming control signals with the same voltage platform as the main control unit. The 0-10V dimming circuit receives a voltage signal and uses it to divide the voltage signal or convert it into a PWM signal for input to the main control unit.

9. The all-mode universal dimming device based on multi-channel parallel control according to claim 4 or 8, characterized in that: The main control unit is compatible with DALI, DMX and KNX protocols. It automatically identifies the protocol type by analyzing the signal characteristics of the wired dimming control signal and calls the corresponding protocol for signal parsing. When the wired signal conversion unit is configured as a single-mode dimming circuit, the switching between different mode dimming circuits is connected to the main control unit through the same first data channel.

10. The all-mode universal dimming device based on multi-channel parallel control according to claim 2, characterized in that: The wireless dimming unit connects to the main control unit and interacts with it via a serial communication interface, SPI interface, I2C interface, PWM interface, or analog signal interface.

11. The all-mode universal dimming device based on multi-channel parallel control according to claim 1, characterized in that: The panel input unit is a configurable circuit, including any one of the following: knob circuit, DIP switch circuit, button circuit, NFC circuit, sliding resistor voltage divider circuit, touch sensing circuit, and touch sensing circuit; The rotary encoder circuit outputs two phase difference pulse signals to the main control unit. The main control unit analyzes the rotation direction based on the phase difference pulse signals and determines the rotation speed and / or displacement based on the pulse frequency or number, so as to generate a panel dimming control signal with corresponding dimming and color adjustment levels.

12. The all-mode universal dimming device based on multi-channel parallel control according to claim 11, characterized in that, Also includes: A parameter setting unit is connected to the main control unit. It enables panel input and / or output parameter settings through local operation on the control panel. The local operation items include one or more of DIP switches, NFC, knobs, buttons, touch screens, and touch control methods. The parameter setting items include one or more of output voltage, output current, output frequency, output power, dimming curve, device address, scene output, and power protection threshold.

13. The all-mode universal dimming device based on multi-channel parallel control according to claim 2, characterized in that: The dimming power supply circuit is connected to the main control unit and interacts with it via a serial communication interface, SPI interface, I2C interface, PWM interface or analog signal interface. It is a configurable circuit and includes any one of a DC-DC constant current dimming circuit, a MOS chopper dimming circuit, or a voltage dimming circuit.

14. The all-mode universal dimming device based on multi-channel parallel control according to claim 13, characterized in that: When the dimming power supply circuit executes a dimming command from any one of the wired signal conversion unit, the wireless dimming unit, and the panel input unit, the main control module generates a dimming status signal based on the dimming result and sends the dimming status signal to an external wireless device through the wireless dimming unit to synchronously update the display status.

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