A full-wave rectified power supplied LED lamp system

Abstract

The application provides a full-wave rectification powered LED lamp system, comprising an LED, an Internet of Things controller and an LED controller; a first input end of the LED controller is connected with a power supply, a second input end of the LED controller is connected with a dimming control end of the Internet of Things controller; a first output end of the LED controller is connected with the LED and the Internet of Things controller; when a voltage value of the first output end of the LED controller is less than a turn-on voltage of the LED and greater than a working voltage of the Internet of Things controller, the LED is in an extinguished state and the Internet of Things controller is in a working state; a line led out by the first output end of the LED controller simultaneously supplies power to the LED and the Internet of Things controller, and an additional power supply device is not needed to supply power to the Internet of Things controller alone; and the Internet of Things controller is kept in a continuous working state while the LED is extinguished, so that the Internet of Things controller can still continuously monitor dimming control information.

Description

Technical Field

[0001] This application relates to the field of lighting fixtures, and more particularly to an LED lighting system powered by full-wave rectification. Background Technology

[0002] Currently, intelligent IoT control of LED lights typically employs a dimming IoT controller and an LED controller. The IoT controller requires an additional independent power supply module to ensure it remains online even when the LED output is off, enabling 24 / 7 control. This independent power supply module operates independently of the LED light's circuitry, increasing costs. Utility Model Content

[0003] The following is an overview of the topics described in detail in this article.

[0004] The purpose of this application is to at least partially solve one of the technical problems existing in the related technologies. The embodiments of this application provide an LED lamp powered by full-wave rectification, which enables the Internet of Things (IoT) controller to continue working while the LED is turned off, so that the IoT controller can still continuously monitor the dimming control information.

[0005] An embodiment of this application discloses a full-wave rectified power supply LED lighting system, comprising: an LED, an IoT controller, and an LED controller; a first input terminal of the LED controller is connected to a power supply, and a second input terminal of the LED controller is connected to a dimming control terminal of the IoT controller; a first output terminal of the LED controller is connected to the LED and the IoT controller; when the voltage value of the first output terminal of the LED controller is less than the forward voltage of the LED and greater than the operating voltage of the IoT controller, the LED is in an off state and the IoT controller is in an operating state.

[0006] According to an embodiment of this application, the LED controller includes a first part circuit, a second part circuit, a third part circuit, a fourth part circuit, and a fifth part circuit. The first part circuit is provided with a first input terminal, and the second part circuit is provided with a first output terminal. A transformer is provided between the first part circuit and the fourth part circuit and the second part circuit, the third part circuit, and the fifth part circuit.

[0007] According to an embodiment of this application, the third part of the circuit is provided with a second input terminal.

[0008] According to an embodiment of this application, the third part of the circuit is provided with a first operational amplifier and a first optocoupler input side, and the fourth part of the circuit is provided with a first optocoupler output side and a control chip of the main circuit MOS; the secondary side of the dimming board is provided with a second input terminal; when the secondary side of the dimming board receives the first dimming signal from the IoT controller, the secondary side of the dimming board outputs a level to the first operational amplifier, the first operational amplifier controls the first optocoupler input side, the first optocoupler input side controls the first optocoupler output side, and the first optocoupler output side drives the control chip of the main circuit MOS to adjust the output voltage of the winding of the second part of the circuit, thereby adjusting the output voltage of other output windings of the transformer and adjusting the output power of the LED. When the output voltage of the first output terminal is adjusted to be less than the conduction voltage of the LED, the LED is turned off; wherein, the first dimming signal is used to control the LED to turn off.

[0009] According to an embodiment of this application, the third part of the circuit is provided with a first full-wave rectifier circuit, and the output voltage of the first full-wave rectifier circuit is used to provide operating voltage for the first operational amplifier, the first optocoupler input side and the primary control circuit of the dimming board module of the third part of the circuit.

[0010] According to an embodiment of this application, the fifth part of the circuit is provided with a second full-wave rectifier circuit, the output voltage of which is used to provide operating voltage for the secondary control circuit of the dimming board module and the input side of the second operational amplifier of the fifth part of the circuit.

[0011] According to an embodiment of this application, the negative terminal of the dimming control terminal of the IoT controller and the negative terminal of the LED controller are connected together, and a current sampling circuit is connected between the common connection point and the negative power supply input terminal of the LED.

[0012] According to an embodiment of this application, the IoT controller is connected to a voltage sampling circuit at the input terminal of the LED controller.

[0013] According to an embodiment of this application, the first part of the circuit is provided with a protection circuit.

[0014] According to an embodiment of this application, the first part of the circuit is provided with a filter circuit.

[0015] The above solution has at least the following advantages: The circuit leading from the first output terminal of the LED controller simultaneously powers both the LED and the IoT controller, eliminating the need for additional power supply equipment to power the IoT controller separately. By controlling the voltage at the first output terminal of the LED controller to be less than the LED's forward voltage and greater than the IoT controller's operating voltage, the IoT controller can be kept operational while the LED is turned off, allowing it to continuously monitor dimming control information. Attached Figure Description

[0016] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0017] Figure 1 This is a structural diagram of a full-wave rectified power supply LED lighting system;

[0018] Figure 2 This is a schematic diagram of a full-wave rectified power supply LED lighting system;

[0019] Figure 3 This is a circuit diagram of the protection circuit and the filtering circuit of the LED controller;

[0020] Figure 4 This is a circuit diagram of the control and power supply circuit of the LED controller;

[0021] Figure 5 This is a circuit diagram of the circuit that powers the LEDs and the IoT controller.

[0022] Figure 6 This is a circuit diagram of the LED controller dimming circuit and the first full-wave rectifier circuit.

[0023] Figure 7 This is a circuit diagram of the primary and secondary control sections of the dimming board module.

[0024] Figure 8 This is the circuit diagram of the second full-wave rectifier circuit section of the dimming board module;

[0025] Figure 9 This is the circuit diagram of the main control chip of the IoT controller;

[0026] Figure 10 This is a circuit diagram of the current sampling circuit of an IoT controller;

[0027] Figure 11 This is a circuit diagram of the voltage sampling circuit of an IoT controller;

[0028] Figure 12 This is a circuit diagram of the power supply control chip for an IoT controller;

[0029] Figure 13 This is the wiring diagram for an IoT controller. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, or the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0033] An embodiment of this application provides a full-wave rectified powered LED lighting system.

[0034] Reference Figure 1 The LED lighting system powered by full-wave rectification includes: LED30, IoT controller 20, and LED controller 10; the first input terminal of LED controller 10 is connected to the power supply, and the second input terminal of LED controller 10 is connected to the dimming control terminal of IoT controller 20; the first output terminal of LED controller 10 is connected to LED30 and IoT controller 20; when the voltage value of the first output terminal of LED controller 10 is less than the forward voltage of LED30 and greater than the operating voltage of IoT controller 20, LED30 is in the off state and IoT controller 20 is in the working state.

[0035] In this embodiment, the first input terminal of the LED controller 10 is connected to the power supply, and the power supply is input to the LED controller 10 through the first input terminal; the second input terminal of the LED controller 10 is connected to the dimming control terminal of the IoT controller 20 through the dimming control line 50, and the dimming control terminal of the IoT controller 20 sends a dimming control signal, which is input to the LED controller 10 from the second input terminal of the LED controller 10; the first output terminal of the LED controller 10 is connected to the LED 30 and the IoT controller 20 through the LED power supply control line 40, and the LED controller 10 converts the AC power of the power supply to DC power and the high voltage power supply to low voltage power, and supplies power to the LED 30 and the IoT controller 20 from the first output terminal.

[0036] When the voltage at the first output terminal of LED controller 10 is greater than the forward voltage of LED30 and greater than the operating voltage of IoT controller 20, LED30 is lit and IoT controller 20 is in operation.

[0037] The user sends dimming control information through the IoT-connected control system to turn off LED30; LED controller 10 receives the dimming control information and controls the voltage value of the first output terminal of LED controller 10 so that the voltage value of the first output terminal of LED controller 10 is less than the conduction voltage of LED30 and greater than the operating voltage of IoT controller 20. At this time, LED30 is in the off state and IoT controller 20 is in the working state.

[0038] The LED power supply control line 40, led out from the first output terminal of the LED controller 10, simultaneously powers both the LED 30 and the IoT controller 20, eliminating the need for additional power supply equipment to power the IoT controller 20 separately. By controlling the voltage at the first output terminal of the LED controller 10 to be less than the forward voltage of the LED 30 and greater than the operating voltage of the IoT controller 20, the LED 30 is turned off while the IoT controller 20 continues to operate, allowing the IoT controller 20 to continuously monitor dimming control information.

[0039] Reference Figure 2 The LED controller 10 includes a first circuit 110, a second circuit 120, a third circuit 130, a fourth circuit 140, and a fifth circuit 150. Transformers are provided between the first circuit 110 and the fourth circuit 140 and the second circuit 120, the third circuit 130, and the fifth circuit 150.

[0040] The circuit consists of five parts: the first part 110 is the primary input circuit for the LED controller; the second part 120 is the power supply for the secondary LED and IoT controller; the third part 130 is the primary full-wave rectified power supply for dimming control; the fourth part 140 is the main control circuit; and the fifth part 150 is the secondary full-wave rectified power supply for dimming control.

[0041] The first part of the circuit 110 has a first input terminal (AC-L terminal and AC-N terminal), and the second part of the circuit 120 has a first output terminal (V+ terminal and V- terminal). The second part of the circuit 120 also includes a circuit for supplying power to the LEDs and the IoT controller. (Refer to...) Figure 5 , Figure 5 This is the circuit of the LED controller that supplies power to the LED and the IoT controller. In this embodiment, an external power supply (such as AC power) is connected to the first input terminal, and the circuit of the LED controller that supplies power to the LED and the IoT controller is connected to the LED30 and the IoT controller 20 through the first output terminal, thus supplying power to the LED30 and the IoT controller 20.

[0042] The third part of the circuit 130 is provided with a second input terminal. In this embodiment, the user sends dimming control information through a mobile device such as a mobile phone connected to the Internet of Things; the Internet of Things controller 20 receives the dimming control information and then sends a first dimming signal to the third part of the circuit 130 of the LED controller 10; the third part of the circuit 130 receives the first dimming signal through the second input terminal.

[0043] Reference Figure 4 and Figure 7 , Figure 4 This is a circuit diagram of the control and power supply circuit of the LED controller. Figure 7 This is the circuit diagram of the primary and secondary control sections external to the dimming board module. Part 4, circuit 140, includes the control and power supply circuitry for the LED controller. Part 3, circuit 130, includes the circuit diagram of the primary and secondary control sections external to the dimming board module. The third part of the circuit 130 includes a dimming board JP1, a first operational amplifier U2, and a first optocoupler input side OP1A. The fourth part of the circuit 140 includes a first optocoupler output side OP1B and a control chip U1 for the main circuit MOS. The secondary side of the dimming board has a second input terminal. When the secondary side of the dimming board receives the first dimming signal from the IoT controller 20, the primary side of the dimming board outputs a level to the first operational amplifier U2. The first operational amplifier U2 controls the first optocoupler input side OP1A, which in turn controls the first optocoupler output side OP1B. The first optocoupler output side OP1B drives the control chip U1 for the main circuit MOS to reduce the output voltage of the T1D winding, thereby reducing the output voltage of the T1B winding, until the output voltage of the first output terminal is less than the conduction voltage of the LED 30, and the LED 30 is turned off. The first dimming signal is used to control the LED 30 to turn off.

[0044] Specifically, the user sends dimming control information via a mobile device such as a smartphone connected to the Internet of Things (IoT). The IoT controller 20 receives the dimming control information and then sends a first dimming signal ranging from 0V to 10V to the third part of the LED controller 10's circuit 130. If the signal is less than 1V (equivalent to a 10% dimming level), the dimming board JP1 of the third part of the circuit 130 receives the first dimming signal through its second input terminal. The dimming board JP1 outputs a 0V level to the first operational amplifier U2. The first operational amplifier U2 controls the first optocoupler input side OP1A, and the first optocoupler input side OP1A controls the first optocoupler output side OP1B, driving the INV terminal of the main circuit MOS control chip U1 to reduce the energy of the T1D winding. As the energy of the T1D winding decreases, the energy of the T1B winding decreases after transformation by the transformer, and the output voltage of the first output terminal of the second part of the circuit 120 decreases. At this time, the output voltage of the first output terminal of the second part circuit 120 is less than the conduction voltage of LED30 and greater than the operating voltage of IoT controller 20, so that LED30 is in the off state and IoT controller 20 is in the working state.

[0045] Reference Figure 6 , Figure 6 This is a circuit diagram of the LED controller's dimming circuit and the first full-wave rectifier circuit. The third part, circuit 130, includes the first full-wave rectifier circuit. The output voltage of the first full-wave rectifier circuit provides the operating voltage for the first operational amplifier U2, the first optocoupler input side OP1A, and the primary control circuit of the dimming board module. In the off state, the energy in the LED controller 10 circuit is low. The first full-wave rectifier circuit, through the full-wave rectification effect of the four diodes, utilizes the positive and negative half-cycle energy of the input power supply, efficiently rectifying even under low pulsation voltage to provide a higher voltage VCC2, supplying power to the first operational amplifier U2, the first optocoupler input side OP1A, and the primary control circuit of the dimming board module.

[0046] Reference Figure 8 , Figure 8 This is a circuit diagram of the second full-wave rectifier circuit of the dimming board module. The fifth circuit section 150 includes this second full-wave rectifier circuit. The output voltage of the second full-wave rectifier circuit provides the operating voltage for the secondary control circuit of the dimming board module and the input side of the second operational amplifier in the fifth circuit. In the off state, the energy in the LED controller 10 circuit is low. The second full-wave rectifier circuit, through the full-wave rectification effect of the four diodes, utilizes the positive and negative half-cycle energy of the input power supply to efficiently rectify even under low ripple voltage, providing a higher voltage VCC3 to power the secondary control circuit of the dimming board module and the secondary side of the second operational amplifier U3.

[0047] Reference Figure 9 , Figure 9 This is the circuit diagram of the main control chip of the IoT controller. The IoT controller 20 is equipped with a main control chip, which controls the overall operation of the IoT controller 20.

[0048] Reference Figure 12 , Figure 12 This is a circuit diagram of the power supply control chip of the IoT controller. The IoT controller 20 is equipped with a power supply control chip to control the power supply status of the IoT controller 20.

[0049] Reference Figure 13 , Figure 13 This is the wiring diagram for the IoT controller. The IoT controller 20 does not require an independent power supply; it is powered directly through the first output terminal of the LED controller 10. Therefore, by adding voltage sampling circuits and current sampling circuits to the IoT controller 20, the power and condition of the lamp can be directly measured.

[0050] Reference Figure 10 , Figure 10This is a circuit diagram of the current sampling circuit of the IoT controller. The negative terminal of the dimming control terminal of the IoT controller 20 and the negative terminal of the LED controller 10 are connected together. A current sampling circuit is connected between the common connection point and the negative power supply input terminal of the LED 30. The current sampling circuit samples the current value between the common connection point and the negative power supply input terminal of the LED 30 to measure the operating current of the LED 30 in real time or to determine the good or bad status of the lamp.

[0051] Reference Figure 11 , Figure 11 This is a circuit diagram of the voltage sampling circuit of the IoT controller. The positive output terminal of LED controller 10 is connected to the positive VCC power supply input terminal of IoT controller 20 and the positive power supply input terminal of LED 30. The voltage value at the positive VCC power supply input terminal of IoT controller 20 is the same as the operating voltage of LED 30. A voltage sampling circuit is connected to the positive VCC power supply input terminal of IoT controller 20. The voltage sampling circuit samples the voltage value at the positive VCC power supply input terminal of IoT controller 20 to measure the operating voltage of LED 30 in real time.

[0052] The power and electricity consumption of the LED30 are measured in real time by measuring the voltage and current of the LED30 lamp.

[0053] Reference Figure 3 , Figure 3 This is a circuit diagram of the protection and filtering circuits of the LED controller. The power input module 110 is equipped with protection circuitry. For example, a gas discharge tube is used for lightning strike or transient overvoltage protection; when the input voltage exceeds a threshold, it breaks down and discharges, limiting the voltage amplitude. Varistors RV1-RV3 are connected in parallel on the input side; their resistance drops sharply during overvoltage, absorbing surge energy and protecting downstream circuits. Overcurrent protection is provided by a fuse; it blows and cuts off the power supply when the circuit is short-circuited or the current is abnormal.

[0054] The power input module 110 is equipped with a filtering circuit. For example, common-mode interference is suppressed by the LF1 and LF2 flat-wire common-mode inductors, high-frequency noise in the input power supply is filtered out, and EMC performance is improved.

[0055] The above is a detailed description of the preferred embodiments of this application, but this application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A full-wave rectified power supply LED lighting system, characterized in that, include: LED, IoT controller, and LED controller; the first input terminal of the LED controller is connected to a power supply, and the second input terminal of the LED controller is connected to the dimming control terminal of the IoT controller; The first output terminal of the LED controller is connected to the LED and the IoT controller; when the voltage value of the first output terminal of the LED controller is less than the conduction voltage of the LED and greater than the operating voltage of the IoT controller, the LED is in an off state and the IoT controller is in an operating state.

2. The LED lighting system with full-wave rectified power supply according to claim 1, characterized in that, The LED controller includes a first circuit, a second circuit, a third circuit, a fourth circuit, and a fifth circuit. The first circuit has a first input terminal, and the second circuit has a first output terminal. A transformer is provided between the first circuit and the fourth circuit and the second circuit, the third circuit, and the fifth circuit.

3. The LED lighting system with full-wave rectified power supply according to claim 2, characterized in that, The third part of the circuit is provided with a second input terminal.

4. The LED lighting system with full-wave rectified power supply according to claim 3, characterized in that, The third part of the circuit includes a first operational amplifier and a first optocoupler input side, and the fourth part of the circuit includes a first optocoupler output side and a control chip for the main circuit MOS. The secondary side of the dimming board has a second input terminal. When the secondary side of the dimming board receives the first dimming signal from the IoT controller, the secondary side outputs a level to the first operational amplifier. The first operational amplifier controls the first optocoupler input side, which in turn controls the first optocoupler output side. The first optocoupler output side drives the control chip of the main circuit MOS to adjust the output voltage of the windings in the second part of the circuit and the output power of the LED, thereby adjusting the output voltage of other output windings of the transformer. When the output voltage at the first output terminal is less than the forward voltage of the LED, the LED turns off. The first dimming signal is used to control the LED to turn off.

5. The LED lighting system with full-wave rectified power supply according to claim 4, characterized in that, The third part of the circuit is provided with a first full-wave rectifier circuit, and the output voltage of the first full-wave rectifier circuit is used to provide operating voltage for the first operational amplifier, the first optocoupler input side and the primary control circuit of the dimming board module of the third part of the circuit.

6. The LED lighting system with full-wave rectified power supply according to claim 5, characterized in that, The fifth part of the circuit is provided with a second full-wave rectifier circuit. The output voltage of the second full-wave rectifier circuit is used to provide operating voltage for the secondary control circuit of the dimming board module and the input side of the second operational amplifier of the fifth part of the circuit.

7. The LED lighting system with full-wave rectified power supply according to claim 1, characterized in that, The negative terminal of the dimming control terminal of the IoT controller and the negative terminal of the LED controller are connected together, and a current sampling circuit is connected between the common connection point and the negative power supply input terminal of the LED.

8. The LED lighting system with full-wave rectified power supply according to claim 1, characterized in that, The IoT controller has a voltage sampling circuit connected to the input terminal of the LED controller.

9. The LED lighting system with full-wave rectified power supply according to claim 2, characterized in that, The first part of the circuit is equipped with a protection circuit.

10. The LED lighting system with full-wave rectified power supply according to claim 2, characterized in that, The first part of the circuit is equipped with a filter circuit.

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