An LED light intelligent controller

Abstract

This invention discloses an intelligent LED lighting controller, relating to the field of LED technology. It includes an LED module module for illumination via multiple LED module circuits; a current detection module for current detection; a power detection module for detecting the power supply status of a power regulation module and controlling an auxiliary power supply module to provide low-voltage constant current when power is off; and an intelligent control module for signal reception and controlling the power regulation module to perform constant current and constant voltage regulation of the power, and for controlling the path control module to change the series connection state of the multiple LED module circuits and perform fault detection and fault location determination. In this intelligent LED lighting controller, the power regulation module performs constant current and constant voltage regulation to drive the LED module modules, and works with the intelligent control module to adjust brightness. When the power regulation module is powered off, the auxiliary power supply module provides power to cooperate with the path control module and the intelligent control module to determine the LED fault location and perform short-circuit control at the fault location.

Description

Technical Field

[0001] This invention relates to the field of LED technology, specifically to an intelligent LED lighting controller. Background Technology

[0002] Compared to ordinary lamps, such as incandescent lamps, LED lights have advantages such as high brightness, energy saving, long lifespan, good applicability, short response time, and environmental friendliness, and are widely used in lighting in various fields. Most existing LED lighting controllers use dedicated LED driver devices to drive and control the series-connected LED modules and adjust their brightness. They also have circuit protection functions such as overvoltage, undervoltage, and overcurrent protection, which protect the LED modules by power-off. However, they cannot automatically detect and troubleshoot faults in the LED modules, resulting in low intelligence and reduced lighting efficiency. Therefore, improvements are needed. Summary of the Invention

[0003] This invention provides an intelligent LED lighting controller to address the problems mentioned in the background section.

[0004] According to an embodiment of the present invention, an intelligent LED lighting controller is provided, which includes: a power supply module, a power regulation module, an LED module module, a power detection module, an intelligent control module, an auxiliary power supply module, a path control module, and a current detection module;

[0005] The power module is used to provide DC power;

[0006] The LED module is connected to the power regulation module and is used to receive the power output from the power regulation module through multiple sets of LED module circuits and perform lighting control.

[0007] The current detection module is connected to the LED module module and is used to detect the current of the LED module module and output a current signal.

[0008] The power detection module is connected to the power regulation module and is used to isolate and detect the power output of the power regulation module and output a first control signal when the power regulation module stops outputting power.

[0009] The intelligent control module is connected to the power detection module, the power regulation module and the current detection module. It is used to output a first pulse signal and control the operation of the power regulation module, receive the first control signal and output a second pulse signal after receiving the first control signal, receive the current signal and monitor the changes in the current signal, and stop the output of the second pulse signal when the monitored current signal changes.

[0010] The power regulation module is connected to the power supply module and the current detection module, and is used to perform constant current and constant voltage regulation on the input power according to the received first pulse signal and current signal through the drive control circuit and output drive power.

[0011] The auxiliary power supply module is connected to the power detection module, the power supply module and the LED module module. It is used to receive the first control signal through the auxiliary power supply circuit and perform low-voltage constant current regulation on the power output of the power supply module, so as to provide auxiliary power to the LED module module.

[0012] The path control module is connected to the intelligent control module and the LED module module, and is used to receive the second pulse signal through the path control circuit and control the series connection state of multiple LED module circuits in the LED module module according to the pulse width of the second pulse signal.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The intelligent LED lighting controller of the present invention uses a power regulation module to perform constant current and constant voltage regulation of the power output of the power module based on the signal detected by the current detection module, and drives the lighting operation of the LED module. The intelligent control module can adjust the power of the power regulation module to realize the lighting regulation operation. The power detection module detects the power supply status of the power regulation module and controls the auxiliary power supply module to supply power to the LED module when the power is off. At the same time, the intelligent control module controls the path control module to adjust the series connection status of multiple LED module circuits in the LED module and determines the fault location of the LED module, and performs short-circuit control on the faulty LED module, thereby maintaining the lighting operation of the LED module and improving the working efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention 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.

[0015] Figure 1 This is a schematic block diagram of the principle of an intelligent LED lighting controller provided as an example of the present invention.

[0016] Figure 2 A circuit diagram of an LED lighting intelligent controller provided as an example of the present invention.

[0017] Figure 3 The connection circuit diagram of the power detection module provided for an example of the present invention.

[0018] Figure 4A connection circuit diagram of the auxiliary power supply module provided for an example of the present invention. Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In one embodiment, see Figure 1 An intelligent LED lighting controller includes: a power supply module 1, a power regulation module 2, an LED module module 3, a power detection module 4, an intelligent control module 5, an auxiliary power supply module 6, a path control module 7, and a current detection module 8.

[0021] Specifically, the power module 1 is used to provide DC power;

[0022] LED module 3 is connected to the power regulation module 2 and is used to receive the power output from the power regulation module 2 through multiple sets of LED module circuits and perform lighting control.

[0023] The current detection module 8 is connected to the LED module module 3 and is used to detect the current of the LED module module 3 and output a current signal.

[0024] The power detection module 4 is connected to the power regulation module 2 and is used to isolate and detect the power output of the power regulation module 2 and output a first control signal when the power regulation module 2 stops outputting power.

[0025] The intelligent control module 5 is connected to the power detection module 4, the power regulation module 2 and the current detection module 8. It is used to output a first pulse signal and control the operation of the power regulation module 2, to receive the first control signal and output a second pulse signal after receiving the first control signal, to receive the current signal and monitor the changes in the current signal, and to stop the output of the second pulse signal when the monitored current signal changes.

[0026] The power regulation module 2 is connected to the power module 1 and the current detection module 8. It is used to perform constant current and constant voltage regulation on the input power according to the received first pulse signal and current signal through the drive control circuit and output drive power.

[0027] The auxiliary power supply module 6 is connected to the power detection module 4, the power supply module 1 and the LED module module 3. It is used to receive the first control signal through the auxiliary power supply circuit and perform low-voltage constant current regulation on the power output of the power supply module 1, so as to provide auxiliary power to the LED module module 3.

[0028] The path control module 7 is connected to the intelligent control module 5 and the LED module module 3. It is used to receive the second pulse signal through the path control circuit and control the series connection state of multiple LED module circuits in the LED module module 3 according to the pulse width of the second pulse signal.

[0029] In a specific embodiment, the power supply module 1 can be a DC power supply circuit to provide DC power, which will not be elaborated here; the power regulation module 2 can be a power regulation circuit composed of LED drivers, which can adjust the output power according to the first pulse signal output by the intelligent control module 5, and thus adjust the brightness of the LED module; the LED module module 3 can be multiple LED module circuits, three LED modules are introduced here, and they are connected in series; the power detection module 4 can be an isolation detection circuit to detect whether the power regulation module 2 outputs power; the intelligent control module 5 can be a microcontroller circuit, integrating an arithmetic unit, a controller, a memory, and input / output devices, etc. The components enable signal processing, data storage, module control, and timing control, achieving signal reception and module control. The auxiliary power supply module 6 can be an auxiliary power supply circuit to provide low-voltage constant current power to the LED module module 3, and is controlled by the power detection module 4. The path control module 7 can be a path control circuit composed of triggers and power transistors, controlled by the second pulse signal output by the intelligent control module 5, and changes the series connection state of multiple LED module circuits in the LED module module 3. The current detection module 8 can be a current detection circuit to detect the current of the LED module module 3, and the detected signal is fed back to the intelligent control module 5 and the power regulation module 2.

[0030] In another embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The power module 1 includes a power supply and a first capacitor C1; the power regulation module 2 includes a first resistor R1, a second capacitor C2, a first regulator U2, a third capacitor C3, a first diode D1, a fifth power transistor Q5, a second resistor R2, a third resistor R3, a first inductor L1, and a fourth capacitor C4.

[0031] Specifically, the first terminal of the power supply is connected to the first terminal of the first capacitor C1 and the eighth terminal of the first regulator U2, and is connected to the sixth terminal of the first regulator U2 through the first resistor R1. The seventh terminal of the first regulator U2 is grounded through the second capacitor C2. The first terminal of the first regulator U2 is connected to the first terminal of the first inductor L1 and the cathode of the first diode D1, and is connected to the second terminal of the first regulator U2 through the third capacitor C3. The third terminal of the first regulator U2 is connected to the drain of the fifth power transistor Q5. The gate of the fifth power transistor Q5 is connected to one end of the second resistor R2 and the first end of the third resistor R3. The second terminal of the first inductor L1 is grounded through the fourth capacitor C4. The fifth power transistor Q5, the other end of the second resistor R2, the fourth terminal of the first regulator U2, the other end of the first capacitor C1, and the second terminal of the power supply are all grounded. The second terminal of the third resistor R3 is connected to the intelligent control module 5.

[0032] In a specific embodiment, the first regulator U2 can be an LM3404 chip, which, together with the first resistor R1, the second capacitor C2, the third capacitor C3, the first diode D1, the fifth power transistor Q5, the second resistor R2, the third resistor R3, the first inductor L1 and the fourth capacitor C4, forms a power regulation circuit. The fifth power transistor Q5 can be an N-channel enhancement-mode MOSFET and is controlled by the intelligent control module 5.

[0033] Furthermore, the power detection module 4 includes a seventh resistor R7, a first optocoupler J1, an eighth resistor R8, a first power supply VCC1, and a sixth capacitor C6; the intelligent control module 5 includes a first controller U1;

[0034] Specifically, the first end of the first optocoupler J1 is connected to the second end of the first inductor L1 through the seventh resistor R7, the second end of the first optocoupler J1 is grounded, the third end of the first optocoupler J1 is connected to the fourth IO terminal of the first controller U1, one end of the sixth capacitor C6 and the auxiliary power supply module 6, and is connected to the first power supply VCC1 through the eighth resistor R8, and the fourth end of the first optocoupler J1 and the other end of the sixth capacitor C6 are both grounded.

[0035] In a specific embodiment, the first optocoupler J1 can be a PC817 optocoupler; the first controller U1 can be an STM32 microcontroller.

[0036] Furthermore, the LED module 3 includes a second diode D2, a first LED module, a second LED module, and a third LED module;

[0037] Specifically, the first end of the first LED module is connected to the cathode of the second diode D2, the anode of the second diode D2 is connected to the second end of the first inductor L1, the second end of the first LED module is connected to the first end of the second LED module, and the second end of the second LED module is connected to the second end of the third LED module.

[0038] In a specific embodiment, the first LED module, the second LED module, and the third LED module are connected in parallel, and the first LED module, the second LED module, and the third LED module have the same number of LEDs and the same power consumption.

[0039] Furthermore, the current detection module 8 includes a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6;

[0040] Specifically, one end of the fourth resistor R4 is connected to one end of the fifth resistor R5, the second end of the third LED module, and the fifth end of the first regulator U2, and is connected to the second IO end of the first controller U1 through the sixth resistor R6. The other ends of the fourth resistor R4 and the fifth resistor R5 are both grounded.

[0041] In a specific embodiment, the fourth resistor R4 and the fifth resistor R5 detect the current of the first LED module, the second LED module and the third LED module, and transmit the detection signal to the first controller U1 through the sixth resistor R6, so that the first controller U1 records and analyzes the degree of change of the detected current signal.

[0042] Furthermore, the auxiliary power supply module 6 includes a ninth resistor R9, a fourth power transistor Q4, a first switching transistor VT1, a constant current adjustable device, and a seventh capacitor C7;

[0043] Specifically, the source of the fourth power transistor Q4 is connected to the first terminal of the power supply and is connected to the gate of the fourth power transistor Q4 and the collector of the first switching transistor VT1 through the ninth resistor R9. The first terminal of the constant current regulating device is connected to the drain of the fourth power transistor Q4. The second terminal of the constant current adjustable device, one terminal of the seventh capacitor C7 and the emitter of the first switching transistor VT1 are all grounded. The third terminal of the constant current adjustable device is connected to the other terminal of the seventh capacitor C7 and the first terminal of the first LED module 3.

[0044] In a specific embodiment, the fourth power transistor Q4 can be a P-channel enhancement-mode MOSFET; the first switching transistor VT1 can be an NPN transistor; and the constant current adjustable device can be, but is not limited to, a power regulation circuit composed of LM317.

[0045] Furthermore, the path control module 7 includes a first power transistor Q1, a second power transistor Q2, a third power transistor Q3, a first trigger U3, and a fifth capacitor C5;

[0046] Specifically, the pulse terminal of the first trigger U3 is connected to the third IO terminal of the first controller U1 through the fifth capacitor C5. The first output terminal, the second output terminal, and the third output terminal of the first trigger U3 are respectively connected to the gate of the first power transistor Q1, the gate of the second power transistor Q2, and the gate of the third power transistor Q3. The ground terminal and the reset terminal of the first trigger U3 are both grounded. The power supply terminal of the first trigger U3 is connected to the first terminal of the first LED module and the drain of the first power transistor Q1. The source of the first power transistor Q1 is connected to the second terminal of the first LED module and the drain of the second power transistor Q2. The source of the second power transistor Q2 is connected to the second terminal of the second LED module and the drain of the third power transistor Q3. The source of the third power transistor Q3 is connected to the second terminal of the third LED module.

[0047] In a specific embodiment, the first flip-flop U3 can be a CD4017 chip, controlled by the second pulse signal output by the first controller U1, and when a rising edge of the second pulse signal is received, the first output terminal, the second output terminal and the third output terminal of the first flip-flop U3 sequentially output a high-level signal; the first power transistor Q1, the second power transistor Q2 and the third power transistor Q3 can all be N-channel enhancement-mode MOSFETs, which respectively control the connection status of the first LED module, the second LED module and the third LED module.

[0048] In this invention, an intelligent LED lighting controller uses a fourth resistor R4 and a fifth resistor R5 to detect the current in a first LED module, a second LED module, and a third LED module. This allows a first regulator U2 to adjust the power supplied by the power source according to the detected current signal, thus driving the lighting operation of the first, second, and third LED modules. The conduction level of the fifth power transistor Q5 can be adjusted by regulating the pulse signal width output from the first I / O terminal of the first controller U1, thereby adjusting the power output of the first regulator U2 and the lighting brightness of the first, second, and third LED modules. When a fault occurs in the first, second, or third LED module, such as a short circuit or open circuit, the first regulator U2 will activate its power-off protection. At this time, the first optocoupler J1 will be turned off, and the first switching transistor VT1 will control the fourth power transistor Q4 to conduct, supplying power to the first LED module. The power supply provides power to the first, second, and third LED modules through the fourth power transistor Q4 and the constant current adjustable device. Simultaneously, the first controller U1 detects a fault and outputs a second pulse signal from its third I / O terminal. This second pulse signal controls the first, second, and third output terminals of the first trigger U3 to output high-level signals, thereby driving the first power transistor Q1, the second power transistor Q2, and the third power transistor Q3 to conduct. At this time, the fault location is determined based on the current change detected by the first controller U1. Specifically, when the first LED module fails, the detected current will be large or zero. In this case, the first controller U1 stops outputting the second pulse signal, causing the first trigger U3 to continuously control the first power transistor Q1 to conduct, thereby short-circuiting the first LED module. After a period of time, the first regulator U2 will automatically restore power supply and control the operation of the second and third LED modules.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent LED lighting controller, characterized in that, The LED lighting intelligent controller includes: a power supply module, a power regulation module, an LED module module, a power detection module, an intelligent control module, an auxiliary power supply module, a path control module, and a current detection module; The power module is used to provide DC power; The LED module is connected to the power regulation module and is used to receive the power output from the power regulation module through multiple sets of LED module circuits and perform lighting control. The current detection module is connected to the LED module module and is used to detect the current of the LED module module and output a current signal. The power detection module is connected to the power regulation module and is used to isolate and detect the power output of the power regulation module and output a first control signal when the power regulation module stops outputting power. The intelligent control module is connected to the power detection module, the power regulation module and the current detection module. It is used to output a first pulse signal and control the operation of the power regulation module, receive the first control signal and output a second pulse signal after receiving the first control signal, receive the current signal and monitor the changes in the current signal, and stop the output of the second pulse signal when the monitored current signal changes. The power regulation module is connected to the power supply module and the current detection module, and is used to perform constant current and constant voltage regulation on the input power according to the received first pulse signal and current signal and output driving power. The auxiliary power supply module is connected to the power detection module, the power supply module and the LED module module. It is used to receive the first control signal and perform low-voltage constant current regulation on the power output of the power supply module, so as to provide auxiliary power to the LED module module. The path control module is connected to the intelligent control module and the LED module module, and is used to receive the second pulse signal and control the series connection state of multiple LED module circuits in the LED module module according to the pulse width of the second pulse signal.

2. The LED lighting intelligent controller according to claim 1, characterized in that, The power module includes a power supply and a first capacitor; the power regulation module includes a first resistor, a second capacitor, a first regulator, a third capacitor, a first diode, a fifth power transistor, a second resistor, a third resistor, a first inductor, and a fourth capacitor. The first terminal of the power supply is connected to the first terminal of the first capacitor and the eighth terminal of the first regulator, and is connected to the sixth terminal of the first regulator through the first resistor. The seventh terminal of the first regulator is grounded through the second capacitor. The first terminal of the first regulator is connected to the first terminal of the first inductor and the cathode of the first diode, and is connected to the second terminal of the first regulator through the third capacitor. The third terminal of the first regulator is connected to the drain of the fifth power transistor. The gate of the fifth power transistor is connected to one end of the second resistor and the first end of the third resistor. The second terminal of the first inductor is grounded through the fourth capacitor. The source of the fifth power transistor, the other end of the second resistor, the fourth terminal of the first regulator, the other end of the first capacitor, and the second terminal of the power supply are all grounded. The second terminal of the third resistor is connected to the intelligent control module.

3. The LED lighting intelligent controller according to claim 2, characterized in that, The power detection module includes a seventh resistor, a first optocoupler, an eighth resistor, a first power supply, and a sixth capacitor; the intelligent control module includes a first controller; The first end of the first optocoupler is connected to the second end of the first inductor through the seventh resistor. The second end of the first optocoupler is grounded. The third end of the first optocoupler is connected to the fourth IO terminal of the first controller, one end of the sixth capacitor, and the auxiliary power supply module, and is connected to the first power supply through the eighth resistor. The fourth end of the first optocoupler and the other end of the sixth capacitor are both grounded.

4. The LED lighting intelligent controller according to claim 3, characterized in that, The LED module includes a second diode, a first LED module, a second LED module, and a third LED module; The first end of the first LED module is connected to the cathode of the second diode, the anode of the second diode is connected to the second end of the first inductor, the second end of the first LED module is connected to the first end of the second LED module, and the second end of the second LED module is connected to the first end of the third LED module.

5. The LED lighting intelligent controller according to claim 4, characterized in that, The current detection module includes a fourth resistor, a fifth resistor, and a sixth resistor; One end of the fourth resistor is connected to one end of the fifth resistor, the second end of the third LED module and the fifth end of the first regulator, and is connected to the second IO end of the first controller through the sixth resistor. The other ends of the fourth resistor and the other ends of the fifth resistor are both grounded.

6. The LED lighting intelligent controller according to claim 4, characterized in that, The auxiliary power supply module includes a ninth resistor, a fourth power transistor, a first switching transistor, a constant current adjustable device, and a seventh capacitor. The source of the fourth power transistor is connected to the first terminal of the power supply and is connected to the gate of the fourth power transistor and the collector of the first switching transistor through the ninth resistor. The first terminal of the constant current regulating device is connected to the drain of the fourth power transistor. The second terminal of the constant current adjustable device, one terminal of the seventh capacitor and the emitter of the first switching transistor are all grounded. The third terminal of the constant current adjustable device is connected to the other terminal of the seventh capacitor and the first terminal of the first LED module.

7. The LED lighting intelligent controller according to claim 4, characterized in that, The path control module includes a first power transistor, a second power transistor, a third power transistor, a first trigger, and a fifth capacitor; The pulse terminal of the first flip-flop is connected to the third I / O terminal of the first controller through the fifth capacitor. The first output terminal, the second output terminal, and the third output terminal of the first flip-flop are respectively connected to the gate of the first power transistor, the gate of the second power transistor, and the gate of the third power transistor. The ground terminal and the reset terminal of the first flip-flop are both grounded. The power supply terminal of the first flip-flop is connected to the first terminal of the first LED module and the drain of the first power transistor. The source of the first power transistor is connected to the second terminal of the first LED module and the drain of the second power transistor. The source of the second power transistor is connected to the second terminal of the second LED module and the drain of the third power transistor. The source of the third power transistor is connected to the second terminal of the third LED module.

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