LED power supply programming communication circuit and method based on dimming line multiplexing

Abstract

The invention relates to an LED power supply programming communication circuit and method based on dimming line multiplexing, the LED power supply programming communication circuit based on dimming line multiplexing comprises a control module, an LED power supply module and a dimming terminal, the LED power supply module comprises a signal multiplexing receiving unit and a decoding control feedback unit, the control module comprises a control display unit and a signal transmission enhancement unit; the dimming signal output end of the signal multiplexing receiving unit is connected with the dimming signal input end of the decoding control feedback unit, and the coded signal output end of the signal multiplexing receiving unit is connected with the coded signal input end of the decoding control feedback unit; the control signal output end of the control display unit is connected with the control signal input end of the signal transmission enhancement unit; a terminal user can directly and conveniently adjust and configure the functional parameters of the LED power supply through the controller, the introduction of digital communication ensures the high efficiency and consistency of the adjustment process, and the use experience and the working efficiency of the LED power supply are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of LED power supply programming communication, and in particular to an LED power supply programming communication circuit and method based on dimming line multiplexing. Background Art

[0002] At present, LED driver power supplies are widely used in the field of solid-state lighting. Their core functions include providing stable voltage and current output and supporting brightness adjustment and function parameter configuration. The existing traditional design of LED driver power supplies usually adopts AC-DC constant voltage / constant current output, and adjusts the output voltage or current through an adjustable potentiometer, and then combines the dimming circuit to achieve 0-100% brightness adjustment. However, this solution usually relies on manual adjustment of the potentiometer to change the output parameters, which has the problems of low adjustment accuracy, low operating efficiency, and inability to quickly adapt to different application scenarios. At the same time, the traditional dimming circuit is separated from the parameter configuration function, which increases the complexity of the production and use process. Summary of the invention

[0003] In order to solve the problems of low precision and insufficient efficiency of existing LED power supply regulation methods, the present application provides an LED power supply programming communication circuit and method based on dimming line multiplexing.

[0004] A LED power supply programming communication circuit based on dimming line multiplexing, the LED power supply programming communication circuit based on dimming line multiplexing includes a control module, an LED power supply module and a dimming terminal located on the LED power supply module, the LED power supply module includes a signal multiplexing receiving unit and a decoding control feedback unit, and the control module includes a control display unit and a signal transmission enhancement unit; The data communication end of the signal multiplexing receiving unit is connected to the dimming terminal, the dimming signal output end of the signal multiplexing receiving unit is connected to the dimming signal input end of the decoding control feedback unit, the encoding signal output end of the signal multiplexing receiving unit is connected to the encoding signal input end of the decoding control feedback unit, and the reply signal output end of the decoding control feedback unit is connected to the reply signal input end of the signal multiplexing receiving unit; The control signal output end of the control display unit is connected to the control signal input end of the signal transmission enhancement unit, the data communication end of the signal transmission enhancement unit is detachably connected to the dimming terminal, and the reply signal output end of the signal transmission enhancement unit is connected to the reply signal input end of the control display unit; When the LED power module is operating normally, the corresponding dimming signal is monitored through the dimming signal input end of the decoding control feedback unit for dimming; when the control module and the LED power module are connected through the dimming terminal, the corresponding coding signal is monitored through the coding signal input end of the decoding control feedback unit for dimming, and a reply signal is output through the reply signal output end of the decoding control feedback unit, and is transmitted to the control display unit after passing through the signal multiplexing receiving unit and the signal sending enhancement unit in sequence, so that the control display unit confirms that the communication path is correct.

[0005] By adopting the above technical solution, the dimming line is reused by upgrading the existing port that only supports dimming function to a port compatible with digital communication function. Through this design, various functional parameters of LED power supply (such as voltage, current, power and dimming curve, etc.) can be transmitted to the LED power supply module in a digital communication mode. In this way, the end user can conveniently adjust and configure the functional parameters of the LED power supply directly through the controller, so that it can flexibly adapt to different application scenarios, which not only eliminates the complex and inefficient operation of adjusting the power supply parameters by manually adjusting the potentiometer knob in the traditional method, but also significantly improves the accuracy of parameter adjustment. The introduction of digital communication ensures the efficiency and consistency of the adjustment process, and greatly reduces the risk of errors or adjustment failures caused by manual operation, thereby greatly improving the user experience and work efficiency of the LED power supply.

[0006] Preferably, the signal multiplexing receiving unit includes an operational amplifier U3, a resistor R2, a dimming signal acquisition network and a coding signal acquisition network, the first end of the resistor R2 is connected to the positive end of the dimming terminal, the in-phase input end of the operational amplifier U3 is connected, the output end of the operational amplifier U3 is connected to the reverse input end of the operational amplifier U3, the output of the operational amplifier U3 is connected to the first conduction end of the dimming signal acquisition network, the second conduction end of the dimming signal acquisition network is connected to the negative end of the dimming terminal, the output end of the operational amplifier U3 is connected to the first conduction end of the coding signal acquisition network, and the second conduction end of the coding signal acquisition network is connected to the negative end of the dimming terminal.

[0007] By adopting the above technical solution, the signal multiplexing receiving unit includes an operational amplifier U3, a resistor R2, a dimming signal acquisition network and a coding signal acquisition network, so as to accurately amplify and separate the dimming signal and the coding signal, thereby ensuring the integrity and accuracy of signal transmission.

[0008] Preferably, the dimming signal acquisition network includes a resistor R4 and a resistor R8, the first end of the resistor R4 is connected to the output end of the operational amplifier U3, the second end of the resistor R4 is connected to the first end of the resistor R8, the second end of the resistor R8 is connected to the negative end of the dimming terminal, and the common node between the second end of the resistor R4 and the first end of the resistor R8 is connected to the dimming signal input end of the decoding control feedback unit.

[0009] By adopting the above technical solution, the dimming signal can be accurately collected and divided through the dimming signal acquisition network including resistors R4 and R8, thereby ensuring that the dimming signal can be correctly transmitted to the decoding control feedback unit, thereby improving the effect and accuracy of LED brightness dimming.

[0010] Preferably, the dimming signal acquisition network includes a resistor R5, a resistor R11 and a capacitor C1, the first end of the resistor R5 is connected to the output end of the operational amplifier U3, the second end of the resistor R5 is connected to the first end of the resistor R11, the second end of the resistor R11 is connected to the negative end of the dimming terminal, a common node between the second end of the resistor R5 and the first end of the resistor R11 is connected to the encoding signal input end of the decoding control feedback unit, and the capacitor C1 is connected between the second end of the resistor R5 and the negative end of the dimming terminal.

[0011] By adopting the above technical solution, the coded signal can be filtered and divided through the dimming signal acquisition network including the resistor R5, the resistor R11 and the capacitor C1, thereby reducing signal interference and ensuring the stability of the coded signal and the accuracy of decoding.

[0012] Preferably, the signal multiplexing receiving unit includes a transistor Q2 and a resistor R10, the first end of the resistor R10 is connected to the reply signal output end of the decoding control feedback unit, the second end of the resistor R10 is connected to the controlled end of the transistor Q2, the first conduction end of the transistor Q2 is connected to the positive end of the dimming terminal, and the second conduction end of the transistor Q2 is connected to the negative end of the dimming terminal.

[0013] By adopting the above technical solution, the reply signal of the decoding control feedback unit can be accurately loaded into the dimming line through the signal multiplexing receiving unit including the transistor Q2 and the resistor R10, thereby realizing signal feedback in the communication process and improving the reliability of communication.

[0014] Preferably, the signal transmission enhancement unit includes a positive connection terminal T1, a negative connection terminal T2, a resistor R7, a resistor R3, a resistor R1, a transistor Q4 and a transistor Q1, wherein the positive connection terminal T1 is detachably connected to the positive end of the dimming terminal, one end of the negative connection terminal T2 is grounded, and the other end is detachably connected to the negative end of the dimming terminal, a first end of the resistor R3 is connected to a power supply, a second end of the resistor R3 is connected to a first conduction end of the transistor Q4, and a second end of the transistor Q4 is connected to a ground. The conduction end is grounded, the control signal output end of the control display unit is connected to the first end of the resistor R7, the second end of the resistor R7 is connected to the controlled end of the transistor Q4, the first conduction end of the transistor Q1 is connected to the power supply, the second conduction end of the transistor Q1 is connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the positive connection terminal T1, and the common node between the second end of the resistor R3 and the first conduction end of the transistor Q4 is connected to the controlled end of the transistor Q1.

[0015] By adopting the above technical solution, the output signal of the control module can be enhanced and stabilized through the signal sending enhancement unit including the positive connection terminal T1, the negative connection terminal T2, the resistor R7, the resistor R3, the resistor R1, the transistor Q4 and the transistor Q1, thereby ensuring that the signal can be transmitted to the LED power supply over a long distance, thereby improving the effectiveness and accuracy of communication.

[0016] Preferably, the signal sending enhancement unit includes a transistor Q3, the second end of the resistor R3 is connected to the first conduction end of the transistor Q3, the second conduction end of the transistor Q3 is connected to the positive connection terminal T1, and the common node between the second conduction end of the transistor Q1 and the first end of the resistor R1 is connected to the controlled end of the transistor Q3.

[0017] By adopting the above technical solution, the signal transmission enhancement unit includes the transistor Q3, which can perform additional stabilization processing on the output of the signal enhancement circuit, thereby further improving the transmission reliability and anti-interference ability of the signal.

[0018] Preferably, the signal sending enhancement unit includes a resistor R6 and a resistor R9, the first end of the resistor R6 is connected to the positive connection terminal T1, the second end of the resistor R6 is connected to the first end of the resistor R9, the second end of the resistor R9 is grounded, and the common node between the second end of the resistor R6 and the first end of the resistor R9 is connected to the reply signal input end of the control display unit.

[0019] By adopting the above technical solution, the signal sent by the signal enhancement unit including the resistor R6 and the resistor R9 can be accurately divided and matched for the signal replied by the LED power supply, thereby ensuring that the control module can correctly receive and analyze the reply signal.

[0020] Preferably, the control display unit includes a display interface, a control chip U1, a key K1 and a key Kn, the display driver communication end of the control chip U1 is connected to the display interface, the control signal output end of the control chip U1 is connected to the control signal input end of the signal sending enhancement unit, the reply signal input end of the control chip U1 is connected to the reply signal output end of the signal sending enhancement unit, the first key signal input end of the control chip U1 is connected to the first end of the key K1, the second end of the key K1 is grounded, the second key signal input end of the control chip U1 is connected to the first end of the key Kn, and the second end of the key Kn is grounded.

[0021] By adopting the above technical solution, by controlling the display unit including the display interface, the control chip U1, the button K1 and the button Kn, the interactive function of user parameter input and real-time display can be realized, thereby improving the convenience and efficiency of operation.

[0022] A LED power supply programming communication method based on dimming line multiplexing is applied to an LED power supply programming communication circuit based on dimming line multiplexing. The LED power supply programming communication method based on dimming line multiplexing includes: Obtaining the connection status of the LED power module; If the connection state is that the LED power module is connected to the dimmer, the dimming signal in the signal multiplexing receiving unit is monitored, the dimming signal is converted into a corresponding first adjustment parameter, and the first adjustment parameter is transmitted to the power supply feedback loop; If the connection state is that the LED power module is connected to the control module, the coded signal in the signal multiplexing receiving unit is monitored, wherein the coded signal is transmitted to the target parameter of the signal multiplexing receiving unit by the control module for conversion and generation; parsing the coded signal to generate a corresponding second adjustment parameter and a reply signal; storing the second adjustment parameter to be used for calling the second adjustment parameter and transmitting it to a power supply feedback loop; The reply signal is transmitted to the control module so that the control module confirms that the communication path is correct.

[0023] By adopting the above technical solution, by monitoring the dimming signal in the signal multiplexing receiving unit and converting it into an adjustment parameter, it is possible to ensure that the LED power supply can achieve accurate brightness dimming when connected to the dimmer, thereby meeting the brightness requirements in different application scenarios; by monitoring the encoded signal in the signal multiplexing receiving unit and parsing it, it is possible to achieve accurate configuration of parameters when connected to the control module, thereby improving the functional flexibility of the LED power supply; by generating a reply signal and transmitting it to the control module, it is possible to ensure the correctness of communication and closed-loop control, thereby improving the reliability and stability of parameter settings.

[0024] The fourth objective of the present application is achieved through the following technical solutions: A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of programming a communication circuit for an LED power supply based on dimming line multiplexing are implemented.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: This application realizes the reuse of dimming lines by upgrading the existing ports that only support dimming functions to ports that are compatible with digital communication functions. Through this design, various functional parameters of the LED power supply (such as voltage, current, power, dimming curve, etc.) can be transmitted to the LED power supply module in a digital communication manner. In this way, the end user can conveniently adjust and configure the functional parameters of the LED power supply directly through the controller, so that it can flexibly adapt to different application scenarios. It not only eliminates the complex and inefficient operation of manually adjusting the power supply parameters by adjusting the potentiometer knob in the traditional method, but also significantly improves the accuracy of parameter adjustment. The introduction of digital communication ensures the efficiency and consistency of the adjustment process, and greatly reduces the risk of errors or adjustment failures caused by manual operation, thereby greatly improving the user experience and work efficiency of the LED power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flowchart of an LED power programming communication circuit based on dimming line multiplexing in one embodiment of the present application.

[0027] Figure 2 This is a partial circuit structure diagram of an LED power programming communication circuit based on dimming line multiplexing in one embodiment of the present application.

[0028] Figure 3 This is a flow chart of a LED power supply programming communication method based on dimming line multiplexing in one embodiment of the present application.

[0029] Description of reference numerals: 1. Control module; 11. Control display unit; 12. Signal transmission enhancement unit; 2. LED power module; 21. Signal multiplexing receiving unit; 22. Decoding control feedback unit; 3. Dimming terminal. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] In one embodiment, if Figure 1 As shown, the present application discloses an LED power supply programming communication circuit based on dimming line multiplexing, and the LED power supply programming communication circuit based on dimming line multiplexing includes a control module 1, an LED power supply module 2 and a dimming terminal 3 located on the LED power supply module 2, the LED power supply module 2 includes a signal multiplexing receiving unit 21 and a decoding control feedback unit 22, and the control module 1 includes a control display unit 11 and a signal transmission enhancement unit 12; The data communication end of the signal multiplexing receiving unit 21 is connected to the dimming terminal 3, the dimming signal output end of the signal multiplexing receiving unit 21 is connected to the dimming signal input end of the decoding control feedback unit 22, the encoding signal output end of the signal multiplexing receiving unit 21 is connected to the encoding signal input end of the decoding control feedback unit 22, and the reply signal output end of the decoding control feedback unit 22 is connected to the reply signal input end of the signal multiplexing receiving unit 21; The control signal output end of the control display unit 11 is connected to the control signal input end of the signal transmission enhancement unit 12, the data communication end of the signal transmission enhancement unit 12 is detachably connected to the dimming terminal 3, and the reply signal output end of the signal transmission enhancement unit 12 is connected to the reply signal input end of the control display unit 11; When the LED power module 2 is working normally, the corresponding dimming signal is monitored through the dimming signal input end of the decoding control feedback unit 22 for dimming. When the control module 1 and the LED power module 2 are connected through the dimming terminal 3, the corresponding coding signal is monitored through the coding signal input end of the decoding control feedback unit 22 for dimming. At the same time, a reply signal is output through the reply signal output end of the decoding control feedback unit 22, and is successively transmitted to the control display unit 11 after passing through the signal multiplexing receiving unit 21 and the signal sending enhancement unit 12, so that the control display unit 11 confirms that the communication path is correct.

[0032] In summary, by upgrading the existing ports that only support dimming functions to ports that are compatible with digital communication functions, the reuse of dimming lines is achieved. Through this design, various functional parameters of the LED power supply (such as voltage, current, power, dimming curve, etc.) can be transmitted to the LED power supply module 2 in a digital communication manner. In this way, the end user can conveniently adjust and configure the functional parameters of the LED power supply directly through the controller, so that it can flexibly adapt to different application scenarios, which not only eliminates the complex and inefficient operation of manually adjusting the potentiometer knob to adjust the power supply parameters in the traditional method, but also significantly improves the accuracy of parameter adjustment. The introduction of digital communication ensures the efficiency and consistency of the adjustment process, and greatly reduces the risk of errors or adjustment failures caused by manual operation, thereby greatly improving the user experience and work efficiency of the LED power supply.

[0033] Specifically, the resistor R2, the operational amplifier U3, the resistor R5, the resistor R11 and the capacitor C1 together form a dimming signal conversion circuit, i.e., a coding signal communication path, which is mainly used to convert the dimming signal into a suitable amplitude and form for decoding and processing; while the resistor R2, the operational amplifier U3, the resistor R4 and the resistor R8 form a communication signal level conversion circuit, i.e., a dimming signal communication path, which is used to adjust the digital signal sent by the control module 1 to a level signal suitable for transmission. In addition, the transistor Q2 and the resistor R10 form a power supply end reply signal sending circuit, which is specifically used to transmit the signal returned from the LED power module 2 to the control module 1, thereby completing the communication closed loop.

[0034] When the LED power supply is working normally, the control module 1 usually does not need to be connected for use, and the dimming line port is externally connected to a 0-10V dimmer. The dimmer is responsible for generating a dimming signal to adjust the brightness of the LED power supply module 2 and the lamp. The dimming signal is transmitted to the in-phase input terminal of the operational amplifier U3 through the resistor R2. Here, the operational amplifier U3 is configured as a voltage follower, and its output voltage is strictly equal to the voltage of the input signal. Subsequently, the output signal of the operational amplifier U3 is divided and filtered through the resistor R5, the resistor R11 and the capacitor C1, and the signal amplitude is adjusted to a range suitable for the control chip U2 in the decoding control feedback unit 22 to receive and process.

[0035] This design ensures that the dimming signal can be accurately transmitted to the decoding control feedback unit 22, and through appropriate signal processing, the LED brightness can be accurately controlled. At the same time, through modular design and separation of signal paths, the system can flexibly switch between dimming mode and communication mode according to needs, thereby improving the application flexibility and control accuracy of the LED power supply.

[0036] Further, such as Figure 2As shown, the signal multiplexing receiving unit 21 includes an operational amplifier U3, a resistor R2, a dimming signal acquisition network and a coding signal acquisition network, the first end of the resistor R2 is connected to the positive end of the dimming terminal 3, the in-phase input end of the operational amplifier U3 is connected, the output end of the operational amplifier U3 is connected to the reverse input end of the operational amplifier U3, the output of the operational amplifier U3 is connected to the first conduction end of the dimming signal acquisition network, the second conduction end of the dimming signal acquisition network is connected to the negative end of the dimming terminal 3, the output end of the operational amplifier U3 is connected to the first conduction end of the coding signal acquisition network, and the second conduction end of the coding signal acquisition network is connected to the negative end of the dimming terminal 3.

[0037] In this embodiment, in this design, the core of the signal multiplexing receiving unit 21 is the operational amplifier U3, the resistor R2, the dimming signal acquisition network and the coding signal acquisition network, which establish a complete signal processing and transmission mechanism through their respective ports to ensure that the dimming signal and the coding signal can be accurately separated and transmitted.

[0038] The first end of the resistor R2 is directly connected to the positive end of the dimming terminal 3. The function of this connection is to send the input signal transmitted by the dimming terminal 3 to the entire signal multiplexing receiving unit 21 as the initial signal source. The signal flows to the in-phase input terminal of the operational amplifier U3 through the resistor R2. The operational amplifier U3 works as a voltage follower here. Its main function is to buffer and stabilize the input signal to ensure that the amplitude of the signal remains unchanged during the subsequent processing. Inside the operational amplifier U3, its output terminal and the reverse input terminal are directly connected. This connection method is a typical voltage follower configuration, which can ensure that the output signal is strictly equal to the voltage of the input signal, while providing a lower output impedance to enhance the load capacity. The output terminal of the operational amplifier U3 is further connected to the first conduction terminal of the dimming signal acquisition network. The role of the dimming signal acquisition network in this connection is to receive and process the dimming signal from the output of U3, specifically including voltage division and filtering operations on the signal, so as to adjust the signal to a voltage range suitable for decoding and processing. The second conduction end of the dimming signal acquisition network is connected to the negative end of the dimming terminal 3. This connection establishes a complete loop of the dimming signal, ensuring that the signal can be transmitted and processed throughout the entire path. At the same time, the output end of the operational amplifier U3 is also connected to the first conduction end of the coding signal acquisition network. This connection provides the basis for the processing path of the coding signal. The function of the coding signal acquisition network is to separate and extract the coding signal from the output signal of U3, and perform level conversion on it so that it reaches the voltage range required by the decoding unit. The second conduction end of the coding signal acquisition network is connected to the negative end of the dimming terminal 3, thereby forming a complete transmission loop of the coding signal.

[0039] Overall, the operational amplifier U3 plays a core role in signal buffering and stabilization in the entire signal multiplexing receiving unit 21, while the dimming signal acquisition network and the coding signal acquisition network are responsible for extracting and processing the dimming signal and the coding signal respectively. Through the logical connection of these components and their ports, the dimming signal and the coding signal can be accurately separated and transmitted to the subsequent units for further decoding and processing. This design realizes the flexible multiplexing of the dimming line between the dimming mode and the communication mode, and improves the system integration and control accuracy.

[0040] In summary, the signal multiplexing receiving unit 21 includes an operational amplifier U3, a resistor R2, a dimming signal acquisition network and a coding signal acquisition network, so as to accurately amplify and separate the dimming signal and the coding signal, thereby ensuring the integrity and accuracy of signal transmission.

[0041] Further, such as Figure 2 As shown, the dimming signal acquisition network includes a resistor R4 and a resistor R8, the first end of the resistor R4 is connected to the output end of the operational amplifier U3, the second end of the resistor R4 is connected to the first end of the resistor R8, the second end of the resistor R8 is connected to the negative end of the dimming terminal 3, and the common node between the second end of the resistor R4 and the first end of the resistor R8 is connected to the dimming signal input end of the decoding control feedback unit 22.

[0042] In this embodiment, the dimming signal acquisition network is composed of resistors R4 and R8, which jointly complete the extraction, voltage division and transmission functions of the dimming signal through the connection of their respective ports, and provide the processed dimming signal to the decoding control feedback unit 22. The connection relationship and function of each structural component form a complete signal transmission logic.

[0043] First, the first end of the resistor R4 is directly connected to the output end of the operational amplifier U3. The output end of the operational amplifier U3 provides a buffered dimming signal voltage, whose signal is stable and the amplitude is consistent with the input end. Through this connection, the dimming signal enters the resistor R4 and further flows to the voltage divider part of the dimming signal acquisition network. The second end of the resistor R4 is connected to the first end of the resistor R8, and this connection forms the starting point of a voltage divider circuit. The function of the voltage divider circuit is to divide the voltage of the dimming signal according to the resistance ratio of the resistor R4 and the resistor R8, and adjust the voltage of the signal to a range suitable for processing by the decoding control feedback unit 22. This voltage divider structure ensures that the dimming signal will not damage the subsequent circuit due to excessive voltage, and can also avoid the influence of too low voltage on the accuracy of the signal. The second end of the resistor R8 is connected to the negative end of the dimming terminal 3. Through this connection, the dimming signal forms a complete loop, so that the voltage divider circuit can work normally, and at the same time provides a stable reference point for the dimming signal acquisition network. At the common node between the second end of the resistor R4 and the first end of the resistor R8, the node is directly connected to the dimming signal input end of the decoding control feedback unit 22. This common node is the signal output point after voltage division, and its voltage is adjusted to a level suitable for processing by the decoding control feedback unit 22 after voltage division by the resistors R4 and R8. Through this connection, the decoding control feedback unit 22 can receive the dimming signal after voltage division and filtering, and further analyze and use the signal to adjust the brightness of the LED power supply.

[0044] Overall, resistors R4 and R8 are connected through their ports to form an accurate voltage divider circuit, operational amplifier U3 provides a stable dimming signal input for this circuit, and the decoding control feedback unit 22 receives the processed signal through the common node for subsequent operations. This structural design not only ensures the stable transmission and processing of the dimming signal, but also enhances the system's compatibility with different dimming signal amplitudes through the adjustment capability of the voltage divider circuit, further improving the system's reliability and dimming accuracy.

[0045] In summary, the dimming signal acquisition network including the resistor R4 and the resistor R8 can accurately acquire and divide the dimming signal, thereby ensuring that the dimming signal can be correctly transmitted to the decoding control feedback unit 22, thereby improving the effect and accuracy of LED brightness dimming.

[0046] Further, such as Figure 2As shown, the dimming signal acquisition network includes a resistor R5, a resistor R11 and a capacitor C1, the first end of the resistor R5 is connected to the output end of the operational amplifier U3, the second end of the resistor R5 is connected to the first end of the resistor R11, the second end of the resistor R11 is connected to the negative end of the dimming terminal 3, the common node between the second end of the resistor R5 and the first end of the resistor R11 is connected to the encoding signal input end of the decoding control feedback unit 22, and the capacitor C1 is connected between the second end of the resistor R5 and the negative end of the dimming terminal 3.

[0047] In this embodiment, the dimming signal acquisition network is composed of a resistor R5, a resistor R11 and a capacitor C1, which together complete the extraction, voltage division, filtering and transmission of the dimming signal through a specific connection relationship and circuit configuration, and provide a stable coded signal input for the decoding control feedback unit 22. The connection and function of each structural component are closely related to form a complete signal processing logic.

[0048] The first end of the resistor R5 is directly connected to the output end of the operational amplifier U3. The output end of the operational amplifier U3 provides a buffered dimming signal, whose signal amplitude is consistent with the input end and is stable and reliable. Through this connection, the dimming signal enters the resistor R5 and begins to flow in the dimming signal acquisition network, providing a basis for subsequent voltage division and filtering. The second end of the resistor R5 is connected to the first end of the resistor R11, and this connection forms the main voltage division part in the network. The voltage division relationship between the resistor R5 and the resistor R11 is determined by their resistance ratio. The function of the voltage division circuit is to adjust the dimming signal voltage output from the operational amplifier U3 to a range suitable for further processing by the decoding control feedback unit 22. This voltage division design ensures that the input signal will not damage the decoding control feedback unit 22 due to excessive amplitude, and can also maintain the integrity and accuracy of the signal. The second end of the resistor R11 is connected to the negative end of the dimming terminal 3. Through this connection, the dimming signal forms a complete loop, and the voltage division circuit can work normally. This loop design provides a stable reference point for the voltage division circuit, so that the dimming signal can be adjusted according to the expected voltage division ratio in the network. At the common node between the second end of the resistor R5 and the first end of the resistor R11, the node is directly connected to the coded signal input end of the decoding control feedback unit 22. The common node is the signal output point after voltage division, and its voltage has been processed by the voltage division of the resistor R5 and the resistor R11, and adjusted to a suitable level that the decoding control feedback unit 22 can receive and analyze. Through this connection, the voltage-divided signal is transmitted to the decoding control feedback unit 22 and further decoded and processed as a coded signal. A capacitor C1 is connected between the second end of the resistor R5 and the negative end of the dimming terminal 3. The main function of the capacitor C1 is to filter the signal to eliminate high-frequency noise or interference components that may exist in the dimming signal, thereby further improving the stability and reliability of the signal. The filtered signal is smoother, which provides higher accuracy for the decoding of the coded signal of the decoding control feedback unit 22.

[0049] Through this design, resistor R5, resistor R11 and capacitor C1 form a signal processing structure combining voltage division and filtering in the dimming signal acquisition network. The dimming signal provided by the operational amplifier U3 is adjusted to an appropriate level after voltage division, and possible noise interference is eliminated through filtering, and then transmitted from the common node to the decoding control feedback unit 22 as a coded signal. The entire network ensures the integrity and adaptability of the signal through reasonable connection and configuration, providing a reliable foundation for subsequent signal decoding and function realization.

[0050] In summary, the dimming signal acquisition network including the resistor R5, the resistor R11 and the capacitor C1 can filter and divide the voltage of the coded signal, thereby reducing signal interference and ensuring the stability of the coded signal and the accuracy of decoding.

[0051] Further, such as Figure 2 As shown, the signal multiplexing receiving unit 21 includes a transistor Q2 and a resistor R10, the first end of the resistor R10 is connected to the reply signal output end of the decoding control feedback unit 22, the second end of the resistor R10 is connected to the controlled end of the transistor Q2, the first conduction end of the transistor Q2 is connected to the positive end of the dimming terminal 3, and the second conduction end of the transistor Q2 is connected to the negative end of the dimming terminal 3.

[0052] In this embodiment, the signal multiplexing receiving unit 21 is composed of a transistor Q2 and a resistor R10. Through reasonable connection and configuration, the sending and transmission functions of the reply signal are realized to ensure that the reply signal generated by the decoding control feedback unit 22 can be accurately transmitted to the dimming light end, completing the communication closed loop of the system.

[0053] The first end of the resistor R10 is directly connected to the reply signal output end of the decoding control feedback unit 22. The main function of the decoding control feedback unit 22 is to decode, store and generate a reply signal for the received signal, and the reply signal is transmitted to the subsequent part of the circuit through the resistor R10. The role of the resistor R10 is to limit the current passing through the circuit to avoid damage to subsequent components (such as transistor Q2) due to excessive signal strength, and to provide the necessary voltage drop so that the signal level meets the working requirements of the subsequent circuit. The second end of the resistor R10 is connected to the controlled end of the transistor Q2. The purpose of this connection is to use the transistor Q2 as a switching element to modulate and control the reply signal generated by the decoding control feedback unit 22. When the decoding control feedback unit 22 outputs the reply signal, the current flows into the controlled end of the transistor Q2 through the resistor R10, thereby controlling the conduction state of the transistor Q2 so that it can load the signal to the dimming line port. The first conduction end of the transistor Q2 is connected to the positive end of the dimming terminal 3. This connection enables the reply signal to be directly loaded onto the positive terminal of the dimming line when the transistor Q2 is turned on, and transmitted to the control module 1 through the dimming line. This design ensures that the reply signal generated by the decoding control feedback unit 22 can be accurately transmitted and forms a communication closed loop with the control module 1. The second conduction end of the transistor Q2 is connected to the negative terminal of the dimming terminal 3 to form a complete loop for signal transmission. Through this connection, when the transistor Q2 is turned on, the reply signal can flow along a complete path and complete the transmission task through the dimming line. In addition, this connection also provides a stable reference potential to ensure the transmission quality of the signal.

[0054] The working logic of the entire signal multiplexing receiving unit 21 can be summarized as follows: the reply signal generated by the decoding control feedback unit 22 first passes through the resistor R10 for current limitation and voltage adjustment, and then controls the conduction state of the transistor Q2 through the output end of the resistor R10. When the transistor Q2 is turned on, the reply signal is loaded between the positive and negative ends of the dimming line port through its internal conduction path, thereby completing the transmission of the signal. In this process, the current limitation and voltage adjustment functions of the resistor R10 ensure the stability of the signal, and the switch control function of the transistor Q2 realizes the accurate loading and transmission of the signal. This design not only ensures the accuracy of signal transmission, but also improves the reliability of the system, so that the dimming line can not only transmit dimming and coding signals during the multiplexing process, but also efficiently complete the task of sending the reply signal, providing a basic guarantee for the communication closed loop of the system.

[0055] In summary, the signal multiplexing receiving unit 21 includes the transistor Q2 and the resistor R10, so that the reply signal of the decoding control feedback unit 22 can be accurately loaded onto the dimming line, thereby realizing signal feedback during the communication process and improving the reliability of communication.

[0056] Further, such as Figure 2 As shown, the signal transmission enhancement unit 12 includes a positive connection terminal T1, a negative connection terminal T2, a resistor R7, a resistor R3, a resistor R1, a transistor Q4 and a transistor Q1, the positive connection terminal T1 is detachably connected to the positive end of the dimming terminal 3, one end of the negative connection terminal T2 is grounded, and the other end is detachably connected to the negative end of the dimming terminal 3, the first end of the resistor R3 is connected to the power supply, the second end of the resistor R3 is connected to the first conduction end of the transistor Q4, the second conduction end of the transistor Q4 is grounded, the control signal output end of the control display unit 11 is connected to the first end of the resistor R7, the second end of the resistor R7 is connected to the controlled end of the transistor Q4, the first conduction end of the transistor Q1 is connected to the power supply, the second conduction end of the transistor Q1 is connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the positive connection terminal T1, and the common node between the second end of the resistor R3 and the first conduction end of the transistor Q4 is connected to the controlled end of the transistor Q1.

[0057] In this embodiment, in this design, the resistor R3, the transistor Q1, the transistor Q3 and the resistor R1 form a signal enhancement circuit, that is, a signal transmission enhancement unit 12, whose main function is to modulate the coded signal from the control chip U1 into a strong signal through the stable control of the current and the amplification and enhancement of the signal, and transmit it to the LED power module 2 through the dimming terminal 3. The circuit also receives and processes the reply signal from the LED power module 2 through the level conversion circuit composed of the resistor R6 and the resistor R9 to complete the communication closed loop. In the signal transmission enhancement circuit, when the system is in the transmission idle state, the output of the control chip U1 is low level. At this time, the transistor Q4 is in the cut-off state, and the pull-up effect of the resistor R3 makes the base of the transistor Q1 at a high level, so the transistor Q1 is turned on. After the transistor Q1 is turned on, the current flows to the output end through the resistor R1, and the resistor R1 generates a continuous high-level output signal to maintain the stability of the signal path. When the system is in the data transmission state, the control chip U1 outputs the corresponding high and low level signals according to the digital coded signal (0 or 1) to be sent as needed. The signal of the control chip U1 is first transmitted to the base of the transistor Q4 through the resistor R7 to control the on or off state of the transistor Q4. When the transistor Q4 is turned on, the current flows through the transistor Q4 and causes the base drive signal of the transistor Q1 to be pulled down, causing the transistor Q1 to be turned off; when the transistor Q4 is turned off, the base of the transistor Q1 returns to a high level and the transistor Q1 is turned on. Through this process, the digital coding signal of the control chip U1 is accurately modulated to the on and off states of the transistor Q1, and then an enhanced digital coding signal with a higher driving capability is output through the resistor R1. This strong signal is transmitted to the LED power module 2 through the dimming terminal 3 for parameter configuration or communication. In general, the circuit realizes the amplification and enhancement of the output signal of the control chip U1 through the signal transmission enhancement unit 12 to ensure that the digital coding signal can be stably transmitted to the LED power module 2; at the same time, the reply signal of the LED power module 2 is divided and processed through the level conversion circuit to ensure that the control chip U1 can accurately receive and decode the reply signal. In this way, not only the reliability and accuracy of signal transmission are improved, but also efficient communication and closed-loop control of the system are achieved, providing a solid guarantee for parameter configuration and function adjustment of the LED power supply.

[0058] Specifically, in the signal transmission enhancement unit 12, the positive connection terminal T1, the negative connection terminal T2, the resistor R7, the resistor R3, the resistor R1, the transistor Q4 and the transistor Q1 together constitute a signal enhancement and transmission circuit. Through the logical connection between the components, the unit can enhance the signal output by the control display unit 11, and transmit the enhanced signal to the dimming terminal 3 through the positive connection terminal T1 and the negative connection terminal T2, which is used for the communication and parameter configuration of the LED power module 2. The positive connection terminal T1 is detachably connected to the positive end of the dimming terminal 3, and the negative connection terminal T2 is grounded at one end and detachably connected to the negative end of the dimming terminal 3 at the other end. This design enables the signal transmission enhancement unit 12 to be flexibly connected to the dimming line system, and at the same time, a stable signal transmission channel is formed by grounding and separating the positive and negative ends. The first end of the resistor R3 is connected to the power supply, and the second end thereof is connected to the first conduction end of the transistor Q4. This configuration enables the resistor R3 to provide the necessary power supply current for the entire circuit, and at the same time, the current flowing through the resistor R3 is controlled by the state of Q4. The second conduction end of transistor Q4 is grounded, and its controlled end is connected to the second end of resistor R7, while the first end of resistor R7 is connected to the control signal output end of control display unit 11. The signal output by control display unit 11 is transmitted to the controlled end of transistor Q4 through resistor R7, thereby controlling the on or off state of Q4. When the control signal is at a low level, Q4 is in the off state, and the current cannot flow to the ground through its conduction end; when the control signal is at a high level, Q4 is turned on, and the current can flow from resistor R3 through the conduction end of Q4 to the ground, thereby affecting the level state of the common node between Q4 and resistor R3. The common node between the second end of resistor R3 and the first conduction end of transistor Q4 is simultaneously connected to the controlled end of transistor Q1. This configuration makes the switch state of transistor Q1 directly affected by the conduction or cutoff of transistor Q4. When Q4 is turned on, the node level is pulled down, and transistor Q1 is in the off state; when Q4 is cut off, the node level rises, and Q1 is turned on. The first conduction end of the transistor Q1 is connected to the power supply, and the second conduction end thereof is connected to the first end of the resistor R1, while the second end of the resistor R1 is connected to the positive connection terminal T1. Through this connection, when Q1 is turned on, the current flows from the power supply through Q1 to the resistor R1, and is finally transmitted to the positive end of the dimming terminal 3 through the positive connection terminal T1. The resistor R1 here not only limits the current, but also performs current sampling on the signal, thereby further adjusting the stability and strength of the output signal. The working logic of the entire circuit is: the control display unit 11 applies a control signal to the transistor Q4 through the resistor R7, and the on or off state of Q4 affects the state of the transistor Q1 through the common node of the resistor R3, and finally the current is enhanced through Q1, and the enhanced signal is transmitted to the dimming terminal 3 through the resistor R1 and the positive connection terminal T1. At the same time, the negative connection terminal T2 provides a stable ground reference to ensure the integrity and reliable transmission of the signal.Through this design, the signal transmission enhancement unit 12 can effectively enhance the signal output by the control display unit 11, ensuring that the signal has sufficient strength and stability during transmission, and can drive the LED power module 2 to correctly receive and decode the signal, thereby achieving accurate parameter configuration and communication functions. The close coordination and logical connection between the various components make the entire system have high reliability and efficiency in signal processing and transmission.

[0059] In summary, the signal sending enhancement unit 12 includes a positive connection terminal T1, a negative connection terminal T2, a resistor R7, a resistor R3, a resistor R1, a transistor Q4 and a transistor Q1, which can enhance and stabilize the output signal of the control module 1, thereby ensuring that the signal can be transmitted to the LED power supply over a long distance, thereby improving the effectiveness and accuracy of communication.

[0060] Further, such as Figure 2 As shown, the signal transmission enhancement unit 12 includes a transistor Q3, the second end of the resistor R3 is connected to the first conduction end of the transistor Q3, the second conduction end of the transistor Q3 is connected to the positive connection terminal T1, and the common node between the second conduction end of the transistor Q1 and the first end of the resistor R1 is connected to the controlled end of the transistor Q3.

[0061] In this embodiment, at the same time, the resistor R1 samples the output current, and the sampling signal further drives the base of the transistor Q3, so that the transistor Q3 is partially turned on. The transistor Q3 performs feedback adjustment on the conduction degree of the transistor Q1 by pulling down the base drive signal of the transistor Q1, thereby achieving the stability of the circuit current. Through this design, the signal enhancement circuit can maintain a constant signal current in the transmission idle state to prevent signal distortion caused by line instability.

[0062] Specifically, in the design of the signal transmission enhancement unit 12, an important signal control and regulation loop is formed between the transistor Q3, the resistor R3, the positive connection terminal T1 and the transistor Q1, which further enhances the stability of the signal and maintains the constancy and accuracy of the output signal by feedback regulation of the current. The connection relationship and logic coordination of each structural component jointly complete this function. The second end of the resistor R3 is connected to the first conduction end of the transistor Q3. This connection relationship provides the transistor Q3 with a current path from the power supply distributed by the resistor R3, and at the same time, the voltage drop through the resistor R3 provides a reference point for control feedback for the subsequent circuit. The first conduction end of the transistor Q3 is its current input end. When the transistor Q3 is in the on state, the current from the resistor R3 can flow to the positive connection terminal T1 through its conduction path. The second conduction end of the transistor Q3 is connected to the positive connection terminal T1. This connection relationship enables the current to flow directly to the positive end of the dimming terminal 3 when Q3 is turned on. Since the positive connection terminal T1 is detachably connected to the positive end of the dimming terminal 3, this path can provide an enhanced signal output for the LED power module 2. Therefore, whether the transistor Q3 is turned on or not directly affects the strength and stability of the signal transmission. The common node between the second conduction end of the transistor Q1 and the first end of the resistor R1 is connected to the controlled end of the transistor Q3, and this connection relationship establishes a feedback control mechanism for the transistor Q3. The voltage of the common node is jointly determined by the conduction state of the transistor Q1 and the current passing through the resistor R1. When the transistor Q1 is turned on, the current from the power supply flows to the resistor R1 through Q1 and generates a certain voltage drop, which controls the base of the transistor Q3 through the common node, thereby adjusting the conduction state of Q3. Specifically, when the transistor Q1 is turned on and the current increases, the voltage of the common node rises, which increases the voltage of the controlled end of the transistor Q3, thereby enhancing the conduction degree of Q3 and allowing more current to flow to the positive connection terminal T1 through Q3. On the contrary, when the conduction degree of transistor Q1 decreases, the voltage of the common node decreases, causing the voltage of the controlled terminal of transistor Q3 to decrease, thereby weakening the conduction state of Q3. This feedback regulation mechanism can dynamically control the current passing through transistor Q3 to ensure that the output signal can maintain a constant current and voltage under different conditions, thereby achieving signal enhancement and stable output. Through the above connection logic, the cooperation between transistor Q3, resistor R3, positive connection terminal T1 and transistor Q1 forms a dynamic current control loop. Transistor Q3 not only plays a role in enhancing signal output, but also further improves the stability and reliability of the signal through interactive control with transistor Q1. The signal transmission enhancement unit 12 designed in this way can effectively compensate for signal fluctuations caused by circuit load changes or transmission path interference, and ensure that the strength and stability of the signal meet the communication requirements of the LED power module 2.

[0063] In summary, by including the transistor Q3 in the signal transmission enhancement unit 12, additional stabilization processing can be performed on the output of the signal enhancement circuit, thereby further improving the transmission reliability and anti-interference capability of the signal.

[0064] Further, such as Figure 2 As shown, the signal sending enhancement unit 12 includes a resistor R6 and a resistor R9, the first end of the resistor R6 is connected to the positive connection terminal T1, the second end of the resistor R6 is connected to the first end of the resistor R9, the second end of the resistor R9 is grounded, and the common node between the second end of the resistor R6 and the first end of the resistor R9 is connected to the reply signal input end of the control display unit 11.

[0065] In this embodiment, during the communication process, in order to achieve closed-loop control of the signal, the reply signal from the LED power module 2 needs to be processed and transmitted back to the control module 1. The level conversion circuit composed of resistors R6 and R9 is responsible for this task. The reply signal of the LED power module 2 usually has a higher voltage, and direct transmission may cause damage to the control chip U1 or cause recognition errors. Resistors R6 and R9 convert high-level signals into lower-level signals suitable for reception by the control chip U1 by forming a voltage divider network. The design of the voltage divider network can not only protect the control chip U1, but also ensure the integrity and accuracy of the reply signal, thereby ensuring the stability of the communication closed loop.

[0066] In summary, the signal transmission enhancement unit 12 includes the resistor R6 and the resistor R9, which can accurately divide and match the signal replied by the LED power supply, thereby ensuring that the control module 1 can correctly receive and analyze the reply signal.

[0067] Further, such as Figure 2 As shown, the control display unit 11 includes a display interface, a control chip U1, a key K1 and a key Kn. The display driver communication end of the control chip U1 is connected to the display interface, the control signal output end of the control chip U1 is connected to the control signal input end of the signal sending enhancement unit 12, the reply signal input end of the control chip U1 is connected to the reply signal output end of the signal sending enhancement unit 12, the first key signal input end of the control chip U1 is connected to the first end of the key K1, the second end of the key K1 is grounded, the second key signal input end of the control chip U1 is connected to the first end of the key Kn, and the second end of the key Kn is grounded.

[0068] In this embodiment, in the control display unit 11, the display interface, the control chip U1, the button K1 and the button Kn are connected through precise ports to form a complete set of human-computer interaction and signal control systems. The functions and connection relationships of each structural component constitute the core logic of the entire unit, which is used to realize parameter setting, signal transmission, reply signal analysis and feedback display. The display interface is connected through the display driver communication terminal of the control chip U1, and the control chip U1 is responsible for generating signals to drive the display interface, including the display of user input parameters and feedback information of the system operation status. The main function of the display interface is to intuitively present the parameters (such as voltage, current or dimming settings) input by the user through the buttons, and at the same time display the working status and reply information of the LED power module 2 during the communication process, so as to provide real-time feedback to the user. The control signal output terminal of the control chip U1 is connected to the control signal input terminal of the signal transmission enhancement unit 12. This connection relationship realizes the direct control of the signal transmission enhancement unit 12 by the control chip U1. The control signal generated by U1 is transmitted to the signal transmission enhancement unit 12 in the form of digital coding according to the parameters input by the user, and the signal transmission enhancement unit 12 then amplifies and enhances the signal and transmits it to the LED power module 2 through the dimming line. This process ensures that the parameters set by the user can be accurately transmitted to the target module. The reply signal input terminal of the control chip U1 is connected to the reply signal output terminal of the signal transmission enhancement unit 12. This connection relationship enables the control chip U1 to receive the reply signal from the LED power module 2. After the LED power module 2 completes the parameter setting or communication process, the reply signal generated by it returns to the signal transmission enhancement unit 12 through the dimming line, and is transmitted to U1 after signal processing. After receiving the signal, U1 analyzes and verifies it, confirms the correctness of the communication, and feeds back the verification result to the user in real time through the display interface, thereby realizing a closed communication loop. The buttons K1 and Kn are input devices for the user to interact with the system, and are connected to the first button signal input terminal and the second button signal input terminal of the control chip U1 through their first ends, respectively, and the second end of the button is grounded. This design provides users with a multifunctional input channel. The state changes (pressed or released) of the buttons K1 and Kn are directly transmitted to the control chip U1 through their ports, and U1 analyzes and generates corresponding control instructions according to the operation signals of the buttons. For example, button K1 can be used to adjust the output voltage, button Kn can be used to adjust the output current, and the user's operation signal is processed by U1 and sent to the signal transmission enhancement unit 12 in the form of digital code, and finally transmitted to the LED power module 2. Overall, the control display unit 11 realizes the display of parameter settings and feedback of operating status through the communication connection between the display interface and the control chip U1; the input of user instructions is completed through the connection between button K1 and button Kn and U1; the accuracy of parameter transmission and reply signal analysis is ensured through the two-way connection between U1 and the signal transmission enhancement unit 12.This design not only realizes the intuitiveness and convenience of human-computer interaction, but also ensures the communication stability and reliability of the entire system through precise signal control and feedback mechanisms.

[0069] In summary, by controlling the display unit 11 including the display interface, the control chip U1, the button K1 and the button Kn, the interactive function of user parameter input and real-time display can be realized, thereby improving the convenience and efficiency of operation.

[0070] like Figure 3 As shown, a LED power supply programming communication method based on dimming line multiplexing is applied to an LED power supply programming communication circuit based on dimming line multiplexing. A LED power supply programming communication method based on dimming line multiplexing includes: S10, obtaining the connection status of the LED power module 2; In this embodiment, the signal status of the dimming terminal 3 is detected by the control module 1. When the dimming terminal 3 is in a static high-level state and there is no control signal, it is determined that the dimming terminal 3 is connected to the dimmer. If the dimming terminal 3 is in a dynamic coding signal state and is accompanied by a control signal input, it is determined that the dimming terminal 3 is connected to the control module 1. This detection process is based on real-time monitoring of the voltage signal of the dimming terminal 3 and classification logic judgment, ensuring that the actual connection object of the LED power module 2 can be accurately identified.

[0071] S20, if the connection state is that the LED power module 2 is connected to the dimmer, the dimming signal in the monitoring signal multiplexing receiving unit 21 is converted into a corresponding first adjustment parameter, and the first adjustment parameter is transmitted to the power feedback loop; In this embodiment, the analog dimming signal provided by the dimmer is sampled in voltage and converted in amplitude through the signal multiplexing receiving unit 21, the input signal is divided and filtered using the dimming signal acquisition network, the sampled 0-10V dimming signal is converted into a proportional parameter as the first adjustment parameter, and the parameter is mapped to the power feedback loop through the decoding control feedback unit 22 to adjust the brightness output of the LED power supply. The mapping process is based on a preset proportional relationship curve, for example, 0V corresponds to the light-off state, and 10V corresponds to the maximum brightness state. The sampled signal will be converted into a voltage value for feedback control according to the corresponding ratio and output to the power module in real time.

[0072] S30, if the connection state is that the LED power module 2 is connected to the control module 1, the coded signal in the signal multiplexing receiving unit 21 is monitored, wherein the coded signal is transmitted to the target parameter of the signal multiplexing receiving unit 21 through the control module 1 for conversion and generation; In this embodiment, the coded signal received by the monitoring signal multiplexing receiving unit 21 is level-adjusted by the signal receiving circuit, and the digital signal is separated and modulated by the coded signal acquisition network. The digital coded signal transmitted by the control module 1 is parsed into target parameters corresponding to the LED power supply parameter settings, such as output voltage, current, power and other functional parameters. After parsing, the signal is converted into a digital value recognizable by the power supply feedback loop for further storage and call.

[0073] S40, parsing the coded signal to generate a corresponding second adjustment parameter and a reply signal; In this embodiment, the coded signal transmitted by the signal multiplexing receiving unit 21 is compared with the pre-stored communication protocol through the decoding control feedback unit 22, and a second adjustment parameter suitable for the LED power module 2 is generated according to the parameter mapping relationship in the protocol, such as the adjusted output current value or power limit value. At the same time, a corresponding reply signal is generated according to the decoding result to feedback whether the coded signal parsing is successful. The reply signal is transmitted to the signal multiplexing receiving unit 21 through the control port in the form of digital code, and is transmitted to the control module 1 through the signal sending path to complete the communication confirmation.

[0074] S50, storing the second adjustment parameter for use in calling the second adjustment parameter to transmit to a power supply feedback loop; In this embodiment, the generated second adjustment parameter is stored in the memory of the decoding control feedback unit 22, and the stored parameters include the specific value of the target parameter and the corresponding communication timestamp. When the power feedback loop needs to be adjusted, the stored second adjustment parameter is called and applied to the closed-loop regulation of voltage and current according to the control logic of the feedback loop to ensure that the set parameter value can be maintained in the subsequent working state after the parameter configuration. For example, when the LED power supply is started, the last stored brightness or voltage setting value is automatically loaded to maintain the consistency of the working state.

[0075] S60 , sending a reply signal to the control module 1 , so that the control module 1 confirms that the communication path is correct.

[0076] In this embodiment, the reply signal generated by the decoding control feedback unit 22 is transmitted to the signal sending enhancement unit 12 via the signal multiplexing receiving unit 21, and the reply signal is level-amplified and modulated by the signal sending enhancement unit 12. The digital coded signal confirming that the communication path is correct is loaded onto the dimming line and transmitted to the control module 1. After the control module 1 receives and decodes the signal, it updates the display interface to confirm that the communication path is correct, and records the successful status of the communication for reference in subsequent operations.

[0077] Specifically, it is assumed that the LED power module 2 is used in a production line, and its output voltage needs to be adjusted to 24V, the output current needs to be adjusted to 1.5A, and the dimming parameters need to be set to 50% brightness. When the control module 1 is connected to the LED power module 2, the user of the control module 1 inputs the target parameters of 24V voltage, 1.5A current and 50% brightness through the key, and these inputs are parsed and encoded into a set of digital signals by the control chip U1, which are then amplified and transmitted to the dimming line interface through the signal transmission enhancement unit 12, and enter the signal multiplexing receiving unit 21. The signal multiplexing receiving unit 21 performs level conversion and parsing on the received digital signal, and passes the decoded target parameters to the decoding control feedback unit 22. The decoding control feedback unit 22 sets the parameter values ​​of 24V and 1.5A as the default operating parameters of the power output according to the built-in control logic of the LED power module 2, and maps the dimming ratio of 50% to the power feedback loop for real-time adjustment of the brightness of the LED lamp. After decoding is completed, the decoding control feedback unit 22 generates a confirmation signal, indicating that the parameter configuration is successful. The signal is transmitted back to the signal sending enhancement unit 12 through the signal multiplexing receiving unit 21, and is transmitted back to the control module 1 via the dimming light. After receiving the confirmation signal, the control module 1 updates the display interface, displays "Parameter setting successful", and records the timestamp and set value of this communication so that the user can view the historical configuration record or perform the next step at any time.

[0078] In summary, by monitoring the dimming signal in the signal multiplexing receiving unit 21 and converting it into an adjustment parameter, it is possible to ensure that the LED power supply can achieve accurate brightness dimming when connected to the dimmer, thereby meeting the brightness requirements in different application scenarios; by monitoring the encoded signal in the signal multiplexing receiving unit 21 and parsing it, it is possible to achieve accurate configuration of parameters when connected to the control module 1, thereby improving the functional flexibility of the LED power supply; by generating a reply signal and transmitting it to the control module 1, it is possible to ensure the correctness of communication and closed-loop control, thereby improving the reliability and stability of parameter settings.

[0079] The specific working principle is: when the LED power module 2 needs to adjust the output voltage, current, power and other parameters, the dimming terminal 3 of the LED power module 2 is connected to the positive connection terminal T1 and the negative connection terminal T2 of the control module 1, and the control chip U1 displays the voltage, current, power and other data input by K1-Kn on the display interface, where n in Kn is a variable, and transmits the 0 or 1 coded data signal through the dimming terminal 3 to the LED power module 2 composed of resistor R2, operational amplifier U3, resistor R4 and resistor R8 through the sending circuit composed of resistor R7, transistor Q4, resistor R3, transistor Q1, transistor Q3 and resistor R1, and then the control chip U2 performs Decode and store, then the control chip U2 sends a reply 0 or 1 coded data to drive the transistor Q2 through the resistor R10 to load the reply data signal of the LED power module 2 on the dimming line, and then the programmer end resistor R6 and resistor R9 divide the voltage and send it to the control chip U1, and the control chip U1 receives and interprets the reply data of the LED power module 2, confirms that the communication is correct, and completes the complete communication interaction process; when the LED power module 2 is working normally, it is not connected to the controller but only to the dimmer, and the control chip U2 calls the previously stored voltage, current, power and other data, and samples the dimming signal value to convert it into a brightness value, and sends it to the power feedback loop to control the output voltage, current, power and brightness of the LED power module 2.

[0080] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0081] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A LED power supply programming communication circuit based on dimming line multiplexing, characterized in that: The LED power supply programming communication circuit based on dimming line multiplexing comprises a control module (1), an LED power supply module (2) and a dimming terminal (3) located on the LED power supply module (2); the LED power supply module (2) comprises a signal multiplexing receiving unit (21) and a decoding control feedback unit (22); and the control module (1) comprises a control display unit (11) and a signal transmission enhancement unit (12); The data communication end of the signal multiplexing receiving unit (21) is connected to the dimming terminal (3), the dimming signal output end of the signal multiplexing receiving unit (21) is connected to the dimming signal input end of the decoding control feedback unit (22), the coded signal output end of the signal multiplexing receiving unit (21) is connected to the coded signal input end of the decoding control feedback unit (22), and the reply signal output end of the decoding control feedback unit (22) is connected to the reply signal input end of the signal multiplexing receiving unit (21); The control signal output end of the control display unit (11) is connected to the control signal input end of the signal transmission enhancement unit (12), the data communication end of the signal transmission enhancement unit (12) is detachably connected to the dimming terminal (3), and the reply signal output end of the signal transmission enhancement unit (12) is connected to the reply signal input end of the control display unit (11); When the LED power module (2) is operating normally, the dimming signal input end of the decoding control feedback unit (22) monitors the corresponding dimming signal to perform dimming. When the control module (1) and the LED power module (2) are connected via the dimming terminal (3), the coding signal input end of the decoding control feedback unit (22) monitors the corresponding coding signal to perform dimming. At the same time, a reply signal is output through the reply signal output end of the decoding control feedback unit (22). After passing through the signal multiplexing receiving unit (21) and the signal transmission enhancement unit (12) in sequence, the reply signal is transmitted to the control display unit (11), thereby enabling the control display unit (11) to confirm that the communication path is correct.

2. According to claim 1, a LED power supply programming communication circuit based on dimming line multiplexing is characterized in that: The signal multiplexing receiving unit (21) comprises an operational amplifier U3, a resistor R2, a dimming signal acquisition network and a coding signal acquisition network, wherein the first end of the resistor R2 is connected to the positive end of the dimming terminal (3), the same phase input end of the operational amplifier U3 is connected, the output end of the operational amplifier U3 is connected to the reverse input end of the operational amplifier U3, the output of the operational amplifier U3 is connected to the first conduction end of the dimming signal acquisition network, the second conduction end of the dimming signal acquisition network is connected to the negative end of the dimming terminal (3), the output end of the operational amplifier U3 is connected to the first conduction end of the coding signal acquisition network, and the second conduction end of the coding signal acquisition network is connected to the negative end of the dimming terminal (3).

3. According to claim 2, a LED power supply programming communication circuit based on dimming line multiplexing is characterized in that: The dimming signal acquisition network comprises a resistor R4 and a resistor R8, wherein a first end of the resistor R4 is connected to an output end of the operational amplifier U3, a second end of the resistor R4 is connected to a first end of the resistor R8, a second end of the resistor R8 is connected to a negative end of the dimming terminal (3), and a common node between the second end of the resistor R4 and the first end of the resistor R8 is connected to a dimming signal input end of the decoding control feedback unit (22).

4. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 2, characterized in that: The dimming signal acquisition network comprises a resistor R5, a resistor R11 and a capacitor C1, wherein the first end of the resistor R5 is connected to the output end of the operational amplifier U3, the second end of the resistor R5 is connected to the first end of the resistor R11, the second end of the resistor R11 is connected to the negative end of the dimming terminal (3), a common node between the second end of the resistor R5 and the first end of the resistor R11 is connected to the encoding signal input end of the decoding control feedback unit (22), and the capacitor C1 is connected between the second end of the resistor R5 and the negative end of the dimming terminal (3).

5. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 1, characterized in that: The signal multiplexing receiving unit (21) comprises a transistor Q2 and a resistor R10, wherein a first end of the resistor R10 is connected to a reply signal output end of the decoding control feedback unit (22), a second end of the resistor R10 is connected to a controlled end of the transistor Q2, a first conduction end of the transistor Q2 is connected to a positive end of the dimming terminal (3), and a second conduction end of the transistor Q2 is connected to a negative end of the dimming terminal (3).

6. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 1, characterized in that: The signal transmission enhancement unit (12) comprises a positive connection terminal T1, a negative connection terminal T2, a resistor R7, a resistor R3, a resistor R1, a transistor Q4 and a transistor Q1, wherein the positive connection terminal T1 is detachably connected to the positive end of the dimming terminal (3), one end of the negative connection terminal T2 is grounded, and the other end is detachably connected to the negative end of the dimming terminal (3), a first end of the resistor R3 is connected to a power source, a second end of the resistor R3 is connected to a first conduction end of the transistor Q4, and a first end of the transistor Q4 is connected to a ground source. The second conduction end is grounded, the control signal output end of the control display unit (11) is connected to the first end of the resistor R7, the second end of the resistor R7 is connected to the controlled end of the transistor Q4, the first conduction end of the transistor Q1 is connected to a power supply, the second conduction end of the transistor Q1 is connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the positive connection terminal T1, and the common node between the second end of the resistor R3 and the first conduction end of the transistor Q4 is connected to the controlled end of the transistor Q1.

7. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 6, characterized in that: The signal transmission enhancement unit (12) comprises a transistor Q3, the second end of the resistor R3 is connected to the first conduction end of the transistor Q3, the second conduction end of the transistor Q3 is connected to the positive connection terminal T1, and a common node between the second conduction end of the transistor Q1 and the first end of the resistor R1 is connected to the controlled end of the transistor Q3.

8. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 6, characterized in that: The signal transmission enhancement unit (12) comprises a resistor R6 and a resistor R9, wherein a first end of the resistor R6 is connected to the positive connection terminal T1, a second end of the resistor R6 is connected to a first end of the resistor R9, a second end of the resistor R9 is grounded, and a common node between the second end of the resistor R6 and the first end of the resistor R9 is connected to a reply signal input end of the control display unit (11).

9. The LED power supply programming communication circuit based on dimming line multiplexing according to claim 1, characterized in that: The control display unit (11) comprises a display interface, a control chip U1, a key K1 and a key Kn, wherein a display drive communication end of the control chip U1 is connected to the display interface, a control signal output end of the control chip U1 is connected to a control signal input end of the signal transmission enhancement unit (12), a reply signal input end of the control chip U1 is connected to a reply signal output end of the signal transmission enhancement unit (12), a first key signal input end of the control chip U1 is connected to a first end of the key K1, a second end of the key K1 is grounded, a second key signal input end of the control chip U1 is connected to a first end of the key Kn, and a second end of the key Kn is grounded.

10. A LED power supply programming communication method based on dimming line multiplexing, applied to a LED power supply programming communication circuit based on dimming line multiplexing as claimed in any one of claims 1 to 9, characterized in that: The LED power supply programming communication method based on dimming line multiplexing includes: Obtaining the connection status of the LED power module (2); If the connection state is that the LED power module (2) is connected to the dimmer, a dimming signal in the monitoring signal multiplexing receiving unit (21) is converted into a corresponding first adjustment parameter, and the first adjustment parameter is transmitted to a power supply feedback loop; If the connection state is that the LED power module (2) is connected to the control module (1), the coded signal in the signal multiplexing receiving unit (21) is monitored, wherein the coded signal is transmitted to the target parameter of the signal multiplexing receiving unit (21) through the control module (1) for conversion and generation; parsing the coded signal to generate a corresponding second adjustment parameter and a reply signal; storing the second adjustment parameter to be used for calling the second adjustment parameter and transmitting it to a power supply feedback loop; The reply signal is transmitted to the control module (1) so that the control module (1) confirms that the communication path is correct.

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