LED light source and lamp compatible with silicon-controlled dimming and intelligent dimming simultaneously

Abstract

The application provides an LED light source compatible with silicon-controlled dimming and intelligent dimming simultaneously, a central control unit is used for collecting a silicon-controlled phase-cut angle of a power supply unit, and a feedback signal is generated according to the silicon-controlled phase-cut angle and is sent to an intelligent dimming unit; the intelligent dimming unit is used for receiving a control instruction from an IOT terminal, generating a dimming signal according to the control instruction and the feedback signal and sending the dimming signal to a constant current unit, and is also used for generating an adjustment signal according to the control signal and sending the adjustment signal to the central control unit; the constant current unit is used for adjusting a light-emitting state according to the dimming signal; the central control unit is also used for generating a silicon-controlled current control signal according to the silicon-controlled phase-cut angle or the adjustment signal and sending the silicon-controlled current control signal to a silicon-controlled current output unit; and the silicon-controlled current output unit is used for adjusting an output current according to the silicon-controlled current control signal. Thus, compatible control of silicon-controlled dimming and intelligent dimming can be realized, and user demands can be met.

Description

Technical Field

[0001] This invention relates to the field of LED chip technology, and in particular to an LED light source and luminaire that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming. Background Technology

[0002] As an energy-saving and environmentally friendly new product, LED lighting fixtures have achieved dimming levels comparable to traditional tungsten filament lamps using SCR dimmers, thanks to technological advancements. In another dimming technology field, smart lighting technology has matured considerably due to the rapid rise of IoT smart modules. However, despite significant progress in both SCR dimming and smart lighting dimming, a method or product that effectively meets the requirements of both SCR dimming and smart lighting dimming remains elusive. Summary of the Invention

[0003] The purpose of this invention is to address the current limitations of LED lighting technology in simultaneously supporting both SCR dimming and intelligent dimming. By providing an LED light source that is compatible with both SCR dimming and intelligent dimming, this invention combines traditional SCR dimming technology with intelligent dimming technology, enabling LED light sources or LED luminaires to meet the dimming requirements of SCR dimmers while also achieving intelligent dimming.

[0004] This invention provides an LED light source that is simultaneously compatible with SCR dimming and intelligent dimming, including a power supply unit, an intelligent dimming unit, a constant current unit, a SCR current output unit, and a central control unit. The output terminal of the power supply unit is connected to the input terminal of the central control unit, the input terminal of the intelligent dimming unit, and the input terminal of the constant current unit. The central control unit communicates bi-phase with the intelligent dimming unit. The output terminal of the central control unit is also connected to the input terminal of the SCR current output unit, the output terminal of the intelligent dimming unit is also connected to the input terminal of the constant current unit, and the output terminal of the SCR current output unit is connected to the input terminal of the power supply unit. The central control unit is used for... The system acquires the thyristor phase-cut angle of the power supply unit and generates a feedback signal based on the thyristor phase-cut angle, which is then sent to the intelligent dimming unit. The intelligent dimming unit receives control commands from the IoT terminal, generates a dimming signal based on the control commands and the feedback signal, and sends it to the constant current unit. It also generates an adjustment signal based on the control signal and sends it to the central control unit. The constant current unit adjusts the light emission state based on the dimming signal. The central control unit generates a thyristor current control signal based on the thyristor phase-cut angle or the adjustment signal and sends it to the thyristor current output unit. The thyristor current output unit adjusts the output current based on the thyristor current control signal.

[0005] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by the present invention, the power supply unit includes a SCR dimmer, a rectifier circuit, and an isolation diode D1. The input terminal of the SCR dimmer is connected to an AC input signal, and the output terminal of the SCR dimmer is connected to the input terminal of the rectifier circuit. The first terminal of the rectifier circuit is connected to the input terminal of the central control unit, and the second terminal of the rectifier circuit is connected to the positive terminal of the isolation diode D1. The negative terminal of the isolation diode D1 is connected to the input terminal of the intelligent dimming unit and the input terminal of the constant current unit. The AC input signal is output as a chopped voltage signal after passing through the SCR dimmer and the rectifier circuit.

[0006] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by the present invention, the intelligent dimming unit includes a power selection module, an AC-DC power module, an LDO power module, and an intelligent control module. The input terminal of the power selection module is connected to the output terminal of the power supply unit, and the output terminal of the power selection module is connected to the input terminals of the AC-DC power module and the LDO power module. The output terminals of the AC-DC power module and the LDO power module are connected to the input terminal of the intelligent control module. The power selection module selects one of the AC-DC power module and the LDO power module to power the intelligent control module according to the output voltage of the power supply unit.

[0007] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by this invention, the central control unit includes a SCR phase detection module and a central core control module. The input terminal of the SCR phase detection module is connected to the power supply unit, and the output terminal of the SCR phase detection module is connected to the central core control module. The central core control module communicates bidirectionally with the intelligent control module. The SCR phase detection module is used to acquire the SCR phase cutting angle of the power supply unit. The central core control module is used to send the feedback signal to the intelligent control module when the SCR phase cutting angle is less than a first preset threshold, and simultaneously send a SCR current control signal to the SCR current output unit to control the SCR current output unit to increase the output current. When the SCR phase cutting angle is greater than a second preset threshold, the central core control module sends a SCR current control signal to the SCR current output unit to control the SCR current output unit to decrease the output current. The first preset threshold is less than the second preset threshold.

[0008] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by the present invention, the constant current unit includes an LED constant current module and an LED lamp group module. The input terminal of the LED constant current module is connected to the intelligent control module, and the output terminal of the LED constant current module is connected to the input terminal of the LED lamp group module. The input terminal of the LED lamp group module is also connected to the output terminal of the power supply unit. When the intelligent control module receives the feedback signal, it sends a standby command to the LED constant current module, and the LED constant current module turns off the LED lamp group module according to the standby command.

[0009] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by the present invention, when the control command is standby or low brightness, the intelligent control module generates the adjustment signal to the central core control module according to the control command, and the central core control module sends the SCR current control signal to the SCR current output unit according to the adjustment signal to control the SCR current output unit to reduce the output current.

[0010] In the LED light source that is compatible with both SCR dimming and intelligent dimming provided by the present invention, the SCR phase detection module includes resistor R2, resistor R3 and clamping transistor DZ1. One end of resistor R2 is connected to the output terminal of the power supply unit, the other end of resistor R2 is connected to one end of resistor R3, the negative terminal of clamping transistor DZ1 and the central core control module, and the other end of resistor R3 and the positive terminal of clamping transistor DZ1 are grounded.

[0011] According to another aspect of the present invention, an LED luminaire is also provided, comprising an LED light source that is simultaneously compatible with SCR dimming and smart dimming as described above.

[0012] Implementing the embodiments of the present invention has the following beneficial effects: The LED light source provided by the present invention, which is compatible with both SCR dimming and intelligent dimming, includes a power supply unit, an intelligent dimming unit, a constant current unit, a SCR current output unit, and a central control unit; the central control unit collects and judges the voltage waveform of the SCR phase angle inside the power supply unit, and outputs different signals to the intelligent dimming unit and the SCR current control unit at different phase angle values ​​to adjust and control the working mode of different circuit units; the intelligent dimming unit can match different power supply modes at different phase angles of the SCR, and the control of the constant current unit by the intelligent dimming unit is in normal working state during SCR dimming; thus, compatible control of SCR dimming and intelligent dimming can be achieved, meeting user needs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 The diagram shown is a schematic of the LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, as provided by this invention.

[0015] Figure 2 The diagram shown is a circuit diagram of an LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, provided in Embodiment 1 of the present invention.

[0016] Figure 3 The diagram shown is a circuit diagram of an LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, provided in Embodiment 2 of the present invention.

[0017] Figure 4 The diagram shown is a circuit diagram of an LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, provided in Embodiment 3 of the present invention.

[0018] Figure 5 What is shown is Figure 1 The circuit diagram of the thyristor output current module in the image;

[0019] Figure 6 The figure shows the relevant waveforms when the phase cutting angle of the thyristor in the power supply unit is the maximum phase angle of the thyristor;

[0020] Figure 7 The figure shows the relevant waveforms when the phase cutting angle of the thyristor in the power supply unit is the middle phase angle of the thyristor;

[0021] Figure 8 The figure shows the relevant waveforms when the phase cutting angle of the thyristor in the power supply unit is the minimum phase angle of the thyristor. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Typical embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] The general idea of ​​this invention is to address the current limitations of LED lighting technology in simultaneously supporting both SCR dimming and intelligent dimming. This invention provides an LED light source that integrates a power supply unit, an intelligent dimming unit, a constant current unit, a SCR current output unit, and a central control unit, simultaneously supporting both SCR dimming and intelligent dimming. The central control unit collects and analyzes the voltage waveform at the SCR phase angle within the power supply unit, outputting different signals to the intelligent dimming unit and the SCR current control unit at different phase angle values ​​to adjust the operating modes of different circuit units. The intelligent dimming unit can match different power supply modes at different SCR phase angles, ensuring normal operation of the intelligent dimming unit's control over the constant current unit during SCR dimming. Therefore, compatible control of both SCR dimming and intelligent dimming can be achieved, meeting user needs.

[0025] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0026] Figure 1 The diagram shown is a schematic of the LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, as provided by this invention. Figure 1 As shown, the present invention provides an LED light source that is compatible with both SCR dimming and intelligent dimming, including a power supply unit 10, an intelligent dimming unit 20, a constant current unit 30, a SCR current output unit 40, and a central control unit 50. The central control unit 50 is used to acquire the SCR phase-cut angle of the power supply unit and generate a feedback signal based on the SCR phase-cut angle, which is then sent to the intelligent dimming unit 20. The intelligent dimming unit 20 is used to receive control signals from an IoT terminal and generate a dimming signal based on the control signal and the feedback signal, which is then sent to the constant current unit 30. It is also used to generate an adjustment signal based on the control signal and send it to the central control unit 20. The constant current unit 30 is used to adjust the light emission state based on the dimming signal. The central control unit 50 is also used to generate a SCR current control signal based on the SCR phase-cut angle or the adjustment signal and send it to the SCR current output unit 40. The SCR current output unit 40 is used to adjust the output current based on the SCR current control signal.

[0027] Specifically, in one embodiment of the present invention, the power supply unit 10 rectifies the AC input signal and outputs it to the central control unit 50, the intelligent dimming unit 20, and the constant current unit 30. It includes a silicon controlled rectifier (SCR) dimmer 110, a rectifier circuit 120, and an isolation diode D1. The AC input signal is output as a chopped voltage signal after passing through the SCR dimmer 110 and the rectifier circuit 120. Further, the input terminal of the SCR dimmer 110 is connected to the AC input signal, and the output terminal of the SCR dimmer is connected to the input terminal of the rectifier circuit. The first terminal of the rectifier circuit is connected to the input terminal of the central control unit 20, which collects the rectified chopped voltage signal to control the operation of subsequent circuits. The second terminal of the rectifier circuit is connected to the positive terminal of the isolation diode D1, and the negative terminal of the isolation diode D1 is connected to the input terminals of the intelligent dimming unit and the constant current unit. The intelligent dimming unit collects the chopped voltage signal to select the subsequent power supply mode, and the constant current unit uses the output chopped voltage signal as the power supply voltage.

[0028] Specifically, in one embodiment of the present invention, the intelligent dimming unit 20 includes a power selection module 210 connected to the power supply unit, an AC-DC power module 220 and an LDO power module 230 connected to the power selection module 210, and an intelligent control module 240 connected to the AC-DC power module 220 and the LDO power module 230. The power selection module 210 is used to select one of the AC-DC power module 220 and the LDO power module 230 to supply power to the intelligent control module 240 according to the output voltage of the power supply unit. After the AC signal passes through the power supply unit, a chopped signal waveform is output to the power selection module. When the SCR dimmer is in a small phase angle state, the output chopped voltage is low. Upon detecting this low voltage, the power selection module shuts down the AC-DC power module and enables the LDO power module, which then provides voltage to the intelligent control module. Conversely, when the SCR dimmer is not operating in a small phase angle mode, the chopped voltage output from the power supply unit becomes high. Upon detecting this high voltage, the power selection module shuts down the LDO power module and enables the AC-DC power module, which then provides voltage to the intelligent control module. This ensures that the intelligent control module receives sufficient supply voltage at different phase angles of the SCR dimmer, meaning that the intelligent control module operates normally during SCR dimming.

[0029] Specifically, in one embodiment of the present invention, the central control unit 50 includes a thyristor phase detection module 510 connected to the power supply unit 10 and a central core control module 520 connected to the thyristor phase detection module 510 and communicating bidirectionally with the intelligent control module 240. The thyristor phase detection module 510 acquires the voltage waveform of the thyristor phase cutting angle within the power supply unit. The implementation of the thyristor phase detection module is not limited (either an integrated circuit chip with waveform detection function or a circuit built from discrete components is acceptable). The thyristor phase detection module acquires the current dimming stroke of the thyristor dimmer in real time, identifies the magnitude of the chopped voltage waveform after passing through the thyristor dimmer, and provides this information to the central core control module.

[0030] Furthermore, in one embodiment of the present invention, the central core control module 520 is used to send a feedback signal to the intelligent control module when the phase angle of the thyristor is less than a first preset threshold. The central core control module processes the current phase angle of the thyristor dimmer and outputs a feedback signal to the intelligent control module to adjust the information of the constant current unit. When the phase angle of the thyristor dimmer is less than a certain fixed value (i.e., when it is in a state like...), the central core control module sends a feedback signal to the intelligent control module to adjust the information of the constant current unit. Figure 8 In the small phase angle working mode shown, the central core control module sends a command to the intelligent control module, which then sends a standby command to the constant current unit to turn off the LED light group module. The LED light string will not light up, thus shielding the LED light string flickering problem caused by the SCR dimmer at a small phase angle.

[0031] Furthermore, in one embodiment of the present invention, the central core control module 520 is used to send a thyristor current control signal to the thyristor current output unit to control the thyristor current output unit to increase the output current when the thyristor phase angle is less than a first preset threshold, and to send a thyristor current control signal to the thyristor current output unit to control the thyristor current output unit to decrease the output current when the thyristor phase angle is greater than a second preset threshold, wherein the first preset threshold is less than the second preset threshold. The central core control module processes the current phase angle of the thyristor dimmer and outputs a control signal to the thyristor current output unit to adjust the working state of the thyristor output current unit. Figure 6 and Figure 7 As shown, when the SCR dimmer is operating in small phase mode, the current of the SCR current output module increases; when the SCR dimmer is operating in large phase mode, the current of the SCR current output module decreases.

[0032] Furthermore, in one embodiment of the present invention, the central core control module 520 is also used to record the maximum phase angle of each type of SCR dimmer and lock the maximum phase angle so that the minimum output current of the SCR current output unit can be adjusted when the SCR dimmer of that type is used in the future.

[0033] Specifically, in one embodiment of the present invention, the constant current unit 30 includes an LED constant current module 310 connected to the intelligent control module 240, and an LED lamp group module 320 connected to the LED constant current module 310 and the power supply unit 10. The implementation of the LED constant current module 310 is not limited; any circuit built with integrated circuits or discrete devices capable of achieving constant current functionality can be used. The number of current channels output by the LED constant current module can be single, dual, triple, or multiple. The LED lamp group module 320 is matched according to the number of current channels of the LED constant current module 310.

[0034] Specifically, in one embodiment of the present invention, the intelligent control module 240 receives control commands (e.g., standby, increase brightness, decrease brightness, etc.) from an IoT terminal, and generates a dimming signal based on the control commands and feedback signals from the central core control module. This signal is then sent to the LED constant current unit to adjust the light emission state of the LED group inside the LED constant current unit. The intelligent control module can employ any type of IoT module with intelligent control functions, such as infrared control, radar control, remote control, APP control, or voice control. The signal control method of the intelligent control module over the LED constant current module inside the constant current unit is not limited; the dimming signal sent by the intelligent control module can be a PWM pulse width modulation signal, an AM analog dimming signal, or a digital dimming signal of type IIC, SPI, DMX512, or single-wire communication.

[0035] Furthermore, in one embodiment of the present invention, the intelligent control module also feeds back the current LED output current status information to the central control unit. Based on the received information, the central control unit adjusts the operating state of the thyristor output current unit. Specifically, when the control command is standby or low brightness, the intelligent control module generates an adjustment signal based on the control command and feeds it back to the central core control module. The central core control module then sends a thyristor current control signal to the thyristor current output unit to control the thyristor current output unit to reduce the output current. Therefore, when the system enters standby mode, the output current to the thyristor dimmer can be reduced in a timely manner, ensuring the system remains in a low-power state.

[0036] Example 1

[0037] Figure 2 The diagram shown is a circuit diagram of an LED light source that is compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, as provided in Embodiment 1 of the present invention. Figure 2As shown, the thyristor phase detection module includes resistors R2 and R3 and a clamping transistor DZ1. One end of resistor R2 is connected to the output terminal of the power supply unit, and the other end of resistor R2 is connected to one end of resistor R3, the negative terminal of clamping transistor DZ1, and the central core control module. The other end of resistor R3 and the positive terminal of clamping transistor DZ1 are grounded. In this embodiment, the thyristor phase detection module uses a resistor divider to convert the voltage into a pulse width signal Signal A via the clamping transistor. The duty cycle of the pulse width signal reflects the dimming phase angle of the thyristor dimmer. Figure 2 The U2 control chip as Figure 1 The central core control module. Figure 2 The constant current source and R1 as Figure 1 The thyristor current output module, in which the constant current source circuit is as follows: Figure 5 As shown. The intelligent control module and U2 communicate bidirectionally. When the SCR dimmer is detected to be at a small phase angle, the U2 control chip sends a Signal B signal to the intelligent control module. When the intelligent control module sends a standby signal or a low-brightness signal to the constant current unit, the intelligent control module synchronously sends a Signal C signal to the U2 control chip, and the U2 control chip sends a Signal D signal to the constant current source, adjusting the constant current source's operating current to reduce operating losses. Furthermore, U1 is an LED constant current control integrated circuit chip. The E1 electrolytic capacitor is connected to the CH port of U1, providing current compensation to compensate for the current of the LED lamp group in any cycle of the network, ensuring flicker-free output current from the LED lamp group. The intelligent control module communicates with the U1 chip via the IIC protocol. The OUT output port of the U1 chip connects to five sets of LED strings with different color temperatures.

[0038] Example 2

[0039] Figure 3 The diagram shown is a circuit diagram of an LED light source that is simultaneously compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, according to Embodiment 2 of the present invention. Figure 3 In the embodiment shown, U3 is an integrated circuit chip that integrates... Figure 2 The functions of the U2 control chip and constant current source. Other operating modes and... Figure 2 The same applies, so I will not repeat it here.

[0040] Example 3

[0041] Figure 4 The diagram shown is a circuit diagram of an LED light source that is simultaneously compatible with both SCR dimming and intelligent dimming, as provided in Embodiment 3 of the present invention. U4 is an integrated circuit chip that integrates... Figure 2 The functions of the U2 control chip, constant current source, and LED constant current driver chip U1. Other operating modes and... Figure 2 The same applies, so I will not repeat it here.

[0042] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0043] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0044] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0045] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. An LED light source that is simultaneously compatible with both silicon controlled rectifier (SCR) dimming and intelligent dimming, characterized in that, The system includes a power supply unit, an intelligent dimming unit, a constant current unit, a SCR current output unit, and a central control unit. The output of the power supply unit is connected to the inputs of the central control unit, the intelligent dimming unit, and the constant current unit. The central control unit communicates bi-phase with the intelligent dimming unit. The output of the central control unit is also connected to the input of the SCR current output unit, the output of the intelligent dimming unit is also connected to the input of the constant current unit, and the output of the SCR current output unit is connected to the input of the power supply unit. The central control unit is used to acquire the SCR phase angle of the power supply unit. When the SCR phase angle is less than a first preset threshold, it generates a feedback signal based on the SCR phase angle and sends it to the intelligent dimming unit. Simultaneously, it generates a SCR current control signal and sends it to the SCR current output unit to increase the output current. When the SCR phase angle is greater than a second preset threshold... The system generates a thyristor current control signal and sends it to the thyristor current output unit to reduce the output current, wherein the first preset threshold is less than the second preset threshold; the intelligent dimming unit receives control commands from the IoT terminal, generates a dimming signal based on the control commands and the feedback signal, and sends it to the constant current unit; when the control command is standby or low brightness, it generates an adjustment signal based on the control command and sends it to the central control unit; the central control unit generates a thyristor current control signal based on the adjustment signal and sends it to the thyristor current output unit to reduce the output current; the constant current unit adjusts the light emission state based on the dimming signal; the central control unit also generates a thyristor current control signal based on the thyristor phase angle or the adjustment signal and sends it to the thyristor current output unit; the thyristor current output unit adjusts the output current returning to the thyristor sustaining current of the power supply unit based on the thyristor current control signal.

2. The LED light source that is simultaneously compatible with SCR dimming and intelligent dimming according to claim 1, characterized in that, The intelligent dimming unit includes a power selection module, an AC-DC power module, an LDO power module, and an intelligent control module. The input terminal of the power selection module is connected to the output terminal of the power supply unit, and the output terminal of the power selection module is connected to the input terminals of the AC-DC power module and the LDO power module. The output terminals of the AC-DC power module and the LDO power module are connected to the input terminal of the intelligent control module. The power selection module selects one of the AC-DC power module and the LDO power module to power the intelligent control module based on the output voltage of the power supply unit.

3. The LED light source that is simultaneously compatible with both SCR dimming and intelligent dimming according to claim 2, characterized in that, The power supply unit includes a silicon controlled rectifier (SCR) dimmer, a rectifier circuit, and an isolation diode D1. The input terminal of the SCR dimmer is connected to an AC input signal, and the output terminal of the SCR dimmer is connected to the input terminal of the rectifier circuit. The first terminal of the rectifier circuit is connected to the input terminal of the central control unit, and the second terminal of the rectifier circuit is connected to the positive terminal of the isolation diode D1. The negative terminal of the isolation diode D1 is connected to the input terminal of the intelligent dimming unit and the input terminal of the constant current unit. The AC input signal is output as a chopped voltage signal after passing through the SCR dimmer and the rectifier circuit.

4. The LED light source that is simultaneously compatible with SCR dimming and intelligent dimming according to claim 3, characterized in that, The central control unit includes a thyristor phase detection module and a central core control module. The input terminal of the thyristor phase detection module is connected to the power supply unit, and the output terminal of the thyristor phase detection module is connected to the central core control module. The central core control module communicates bidirectionally with the intelligent control module. The thyristor phase detection module is used to collect the thyristor phase cutting angle of the power supply unit.

5. The LED light source that is simultaneously compatible with both SCR dimming and intelligent dimming according to claim 4, characterized in that, The constant current unit includes an LED constant current module and an LED lamp group module. The input terminal of the LED constant current module is connected to the intelligent control module, and the output terminal of the LED constant current module is connected to the input terminal of the LED lamp group module. The input terminal of the LED lamp group module is also connected to the output terminal of the power supply unit. When the intelligent control module receives the feedback signal, it sends a standby command to the LED constant current module, and the LED constant current module turns off the LED lamp group module according to the standby command.

6. The LED light source that is simultaneously compatible with SCR dimming and intelligent dimming according to claim 4, characterized in that, The thyristor phase detection module includes resistors R2 and R3 and a clamping transistor DZ1. One end of resistor R2 is connected to the output terminal of the power supply unit, and the other end of resistor R2 is connected to one end of resistor R3, the negative terminal of clamping transistor DZ1 and the central core control module. The other end of resistor R3 and the positive terminal of clamping transistor DZ1 are grounded.

7. An LED lighting fixture, characterized in that, This includes LED light sources that are compatible with both silicon controlled rectifier (SCR) dimming and smart dimming, as described in any one of claims 1 to 6.

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