CN216531862U

CN216531862U - Circuit for LED driver

Info

Publication number: CN216531862U
Application number: CN202123231009.8U
Authority: CN
Inventors: 吕勇杰
Original assignee: Dongguan Lianyun Lamp Network Technology Co ltd
Current assignee: Dongguan Lianyun Lamp Network Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-05-13
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to the technical field of LEDs (light emitting diode), in particular to a circuit for an LED driver, which comprises a main control module, a signal transceiving module, an Ethernet power supply module and a plurality of LED constant current driving modules, wherein the main control module is electrically connected with the signal transceiving module, and the signal transceiving module is used for carrying out signal interaction with an external controller; the Ethernet power supply module is used for supplying power to the main control module and the signal transceiving module, and the main control module is used for being externally connected with an LED lamp through the LED constant current driving module. The power is supplied through the Ethernet, so that the effect of low-voltage power supply of the LED lamp is realized, and the LED lamp is safely and conveniently dismounted by a user; the LED lamp control system is provided with the signal transceiving module for receiving the control signal to realize the control of the brightness, the on-off and the like of the LED lamp, so that the flexibility is improved.

Description

Circuit for LED driver

Technical Field

The utility model relates to the technical field of LEDs, in particular to a circuit for an LED driver.

Background

Most of the current indoor LEDs are powered by mains supply, so that the current indoor LEDs are inconvenient to disassemble and assemble and have the defect of single control mode, and the control and installation modes of the LEDs are not flexible enough.

Disclosure of Invention

The utility model provides a circuit for an LED driver, which is convenient to disassemble and assemble and flexible to control aiming at the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a circuit for an LED driver, which comprises a main control module, a signal transceiving module, an Ethernet power supply module and a plurality of LED constant current driving modules, wherein the main control module is electrically connected with the signal transceiving module, and the signal transceiving module is used for carrying out signal interaction with an external controller; the Ethernet power supply module is used for supplying power to the main control module and the signal transceiving module, and the main control module is externally connected with an LED lamp through the LED constant current driving module.

Furthermore, the main control module comprises a main control chip and a voltage stabilizing circuit, the main control chip is ESP32-PICO-D4, the voltage stabilizing circuit is used for reducing 5V direct current to 3.3V and then supplying power to the main control chip, and the LED constant current driving module is connected to twenty-eight and twenty-nine pins of the main control chip.

Furthermore, a twenty-fourth pin of the main control module is connected with a microwave radar sensor, a sixth pin of the main control module is connected with a photosensitive sensor, and the main control module is used for controlling the on-off of an external LED lamp according to signals of the microwave radar sensor and the photosensitive sensor.

Furthermore, the voltage stabilizing circuit comprises a voltage stabilizing chip and a filtering structure, wherein the filtering structure is arranged between the output end of the voltage stabilizing chip and the main control chip.

Furthermore, the signal transceiver module includes a transceiver chip and an oscillation structure, the transceiver chip is in an IP101GRI model, the oscillation structure is connected between the second pin and the third pin of the transceiver chip, and the transceiver chip is in signal connection with the main control module.

Furthermore, the oscillating structure includes an oscillator Y1, a resistor R29, a capacitor C19, and a capacitor C22, a first pin of the oscillator Y1 is connected to the second pin of the transceiver chip, the second pin and the fourth pin of the oscillator Y1 are grounded, a third pin of the oscillator Y1 is connected to the third pin of the transceiver chip, the resistor R29 is disposed between the first pin and the third pin of the oscillator Y1, the third pin of the oscillator Y1 is grounded via the capacitor C19, and the first pin of the oscillator Y1 is grounded via the capacitor C22.

Furthermore, the Ethernet power supply module comprises a power supply chip, a signal transformer and a filtering module, wherein the signal transformer is connected to the power supply chip through the filtering module, and the power supply chip is used for supplying power to the main control module; the model of the power supply chip is PM 8805.

Furthermore, the filtering module comprises two filtering circuits, each filtering circuit comprises a filter, a diode and two inductors, the diodes are arranged between the filters and the signal transformer, the two inductors are connected in parallel, and the filters are connected to the power supply chip through the two inductors.

Furthermore, the LED constant current driving module comprises a current source and a plurality of voltage-stabilizing capacitors, the current source is LED6000, a first pin of the current source is grounded after passing through the voltage-stabilizing capacitors, the first pin and a fourth pin of the current source are respectively provided with an RC filter circuit, and an RC filter circuit is arranged between an eighth pin and a ninth pin of the current source.

Furthermore, the main control module is connected with a delay circuit.

The utility model has the beneficial effects that: the utility model supplies power through Ethernet, thus realizing the effect of supplying power to the LED lamp at low voltage, and being safe for users to realize the disassembly and assembly of the LED lamp; the LED lamp control system is provided with the signal receiving and transmitting module for receiving the control signal to realize the control of the brightness, the on-off and the like of the LED lamp, so that the flexibility is improved.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a schematic diagram of a main control chip according to the present invention.

FIG. 3 is a peripheral circuit diagram of the main control chip according to the present invention.

FIG. 4 is a schematic diagram of a voltage regulator circuit according to the present invention.

Fig. 5 is a schematic diagram of a transceiver chip according to the present invention.

Fig. 6 is a schematic diagram of a power supply chip according to the present invention.

Fig. 7 is a schematic diagram of a signal transformer and a filtering module according to the present invention.

Fig. 8 is a schematic diagram of an LED constant current driving module according to the present invention.

FIG. 9 is a diagram of a delay circuit according to the present invention.

Reference numerals: the system comprises a main control module, a signal transceiving module, a 3-Ethernet power supply module, a 4-LED constant current driving module, a 6-microwave radar sensor, a 7-photosensitive sensor, an 8-oscillation structure, a 9-filtering module and a 10-filtering circuit.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.

As shown in fig. 1 to 9, the circuit for an LED driver provided by the present invention includes a main control module 1, a signal transceiver module 2, an ethernet power supply module 3, and a plurality of LED constant current driving modules 4, wherein the main control module 1 is electrically connected to the signal transceiver module 2, and the signal transceiver module 2 is used for performing signal interaction with an external controller; the Ethernet power supply module 3 is used for supplying power to the main control module 1 and the signal transceiving module 2, and the main control module 1 is externally connected with an LED lamp through an LED constant current driving module 4.

When the power supply device is used, power can be supplied by the POE switch, namely the POE switch converts an electric signal part transmitted by a network cable into current and transmits the current to the Ethernet power supply module 3, the current is stabilized by the Ethernet power supply module 3 and then is supplied to the main control module 1, and meanwhile, the signal transceiver module 2 can also realize signal interaction with the POE switch so as to transmit a control signal to the main control module 1; the LED lamp can be directly plugged and unplugged and connected with the LED constant current driving module 4, the main control module 1 supplies power for the LED lamp through the LED constant current driving module 4, the LED lamp can be controlled to be on or off and to change the brightness through the LED constant current driving module 4, and the intelligent control effect is achieved.

In this embodiment, the main control module 1 includes a main control chip and a voltage stabilizing circuit, the main control chip is ESP32-PICO-D4, the voltage stabilizing circuit is configured to reduce 5V dc voltage by 3.3V and then supply power to the main control chip, and the LED constant current driving module 4 is connected to the twenty-eighth and twenty-ninth pins of the main control chip. That is, the present invention has two supply voltages: one is the 5V voltage directly provided by the POE switch, the other is the voltage for reducing the 5V voltage to 3.3V voltage through the voltage stabilizing circuit for power supply, and most of electronic elements use the two voltages as the operating voltage, so the utility model can reliably work at the working voltage; the ESP32-PICO-D4 chip belongs to a system-level packaging module integrated with WIFI and Bluetooth, and the chip is used as a main control chip, so that the LED lamp can be reliably controlled, the control signal can be acquired in a wireless mode besides the control signal acquired by the POE switch, and the control is diversified.

Specifically, a twenty-fourth pin of the main control module 1 is connected with a microwave radar sensor 6, a sixth pin of the main control module 1 is connected with a photosensitive sensor 7, and the main control module 1 is used for controlling the external LED lamp to start and stop according to signals of the microwave radar sensor 6 and the photosensitive sensor 7. The utility model can realize the start and stop of the LED lamp according to whether people pass around and the change of the ambient brightness, and has the effects of energy conservation and intellectualization. Preferably, the microwave radar sensor may be a commercially available product, for example, a product with model CDM 324.

Specifically, the voltage stabilizing circuit comprises a voltage stabilizing chip and a filtering structure, wherein the filtering structure is arranged between the output end of the voltage stabilizing chip and the main control chip. The voltage stabilizing chip is used for receiving the current transmitted by the POE switch and reducing the current to 5V for power supply, and the filtering structure filters the current for power supply so as to stabilize the current.

In this embodiment, the signal transceiver module 2 includes a transceiver chip and an oscillation structure 8, the transceiver chip is IP101GRI in model, the oscillation structure 8 is connected between the second pin and the third pin of the transceiver chip, and the transceiver chip is in signal connection with the main control module 1. The transceiver chip can stably and accurately receive signals transmitted by the POE switch, so that the transceiver chip can be applied to an LED lamp control system and is directly controlled by a host.

Specifically, the oscillation structure 8 includes an oscillator Y1, a resistor R29, a capacitor C19, and a capacitor C22, a first pin of the oscillator Y1 is connected to the second pin of the transceiver chip, the second pin and the fourth pin of the oscillator Y1 are grounded, a third pin of the oscillator Y1 is connected to the third pin of the transceiver chip, the resistor R29 is disposed between the first pin and the third pin of the oscillator Y1, the third pin of the oscillator Y1 is grounded via the capacitor C19, and the first pin of the oscillator Y1 is grounded via the capacitor C22. The oscillating structure 8 is used to keep the frequency of the present invention stable, so that the control signal can be reliably received and corresponding action can be performed according to the control signal.

In this embodiment, the power over ethernet module 3 includes a power supply chip, a signal transformer and a filtering module 9, the signal transformer is connected to the power supply chip through the filtering module 9, and the power supply chip is configured to supply power to the main control module 1; the model of the power supply chip is PM 8805.

Specifically, the filtering module 9 includes two filtering circuits 10, the filtering circuit 10 includes a filter, a diode and two inductors, the diode is disposed between the filter and the signal transformer, the two inductors are connected in parallel, and the filter is connected to the power supply chip through the two inductors. The filtering circuit 10 is used for filtering the input current to ensure the stability of the input current and avoid the input current from having larger fluctuation due to overlarge noise, thereby ensuring that each resistance element can work stably.

In this embodiment, the LED constant current driving module 4 includes a current source and a plurality of voltage-stabilizing capacitors, the current source is LED6000, a first pin of the current source is grounded after passing through the plurality of voltage-stabilizing capacitors, the first pin and a fourth pin of the current source are respectively provided with an RC filter circuit 11, and the RC filter circuit 11 is provided between an eighth pin and a ninth pin of the current source. The LED6000 current source has a dimming function and is matched with the main control chip for use, so that the brightness and the light color of the LED lamp are adjusted, and the work of the LED6000 current source is more flexible; the cooperation of the multiple voltage-stabilizing capacitors and the RC filter circuit 11 is used for stabilizing the voltage for supplying power to the LED lamp, so as to ensure the uniformity and stability of the light emission of the LED.

In this embodiment, the main control module 1 is connected to a delay circuit, so that the utility model can perform a delay reaction after receiving a control signal to avoid burnout.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A circuit for an LED driver, characterized by: the LED constant current driving circuit comprises a main control module, a signal transceiving module, an Ethernet power supply module and a plurality of LED constant current driving modules, wherein the main control module is electrically connected with the signal transceiving module, and the signal transceiving module is used for carrying out signal interaction with an external controller; the Ethernet power supply module is used for supplying power to the main control module and the signal transceiving module, and the main control module is externally connected with an LED lamp through the LED constant current driving module.

2. The circuit for an LED driver of claim 1, wherein: the LED constant current driving circuit comprises a main control module and a voltage stabilizing circuit, wherein the main control module is ESP32-PICO-D4, the voltage stabilizing circuit is used for reducing 5V direct current to 3.3V and then supplying power to the main control chip, and the LED constant current driving module is connected to twenty-eight and twenty-nine pins of the main control chip.

3. The circuit for an LED driver of claim 2, wherein: the device comprises a main control module and is characterized in that a twenty-fourth pin of the main control module is connected with a microwave radar sensor, a sixth pin of the main control module is connected with a photosensitive sensor, and the main control module is used for controlling the start and stop of an external LED lamp according to signals of the microwave radar sensor and the photosensitive sensor.

4. The circuit for an LED driver of claim 2, wherein: the voltage stabilizing circuit comprises a voltage stabilizing chip and a filtering structure, wherein the filtering structure is arranged between the output end of the voltage stabilizing chip and the main control chip.

5. The circuit for an LED driver of claim 1, wherein: the signal transceiving module comprises a transceiving chip and an oscillating structure, the type of the transceiving chip is IP101GRI, the oscillating structure is connected between a second pin and a third pin of the transceiving chip, and the transceiving chip is in signal connection with the main control module.

6. The circuit for an LED driver of claim 5, wherein: the oscillation structure comprises an oscillator Y1, a resistor R29, a capacitor C19 and a capacitor C22, a first pin of the oscillator Y1 is connected to a second pin of the transceiver chip, a second pin and a fourth pin of the oscillator Y1 are grounded, a third pin of the oscillator Y1 is connected to a third pin of the transceiver chip, the resistor R29 is arranged between the first pin and the third pin of the oscillator Y1, the third pin of the oscillator Y1 is grounded through the capacitor C19, and a first pin of the oscillator Y1 is grounded through the capacitor C22.

7. The circuit for an LED driver of claim 1, wherein: the Ethernet power supply module comprises a power supply chip, a signal transformer and a filtering module, wherein the signal transformer is connected to the power supply chip through the filtering module, and the power supply chip is used for supplying power to the main control module; the model of the power supply chip is PM 8805.

8. The circuit for an LED driver of claim 7, wherein: the filtering module comprises two filtering circuits, each filtering circuit comprises a filter, a diode and two inductors, the diodes are arranged between the filters and the signal transformer, the two inductors are connected in parallel, and the filters are connected to the power supply chip through the two inductors.

9. The circuit for an LED driver of claim 1, wherein: the LED constant current driving module comprises a current source and a plurality of voltage-stabilizing capacitors, the type of the current source is LED6000, a first pin of the current source is grounded after passing through the voltage-stabilizing capacitors, the first pin and a fourth pin of the current source are respectively provided with an RC filter circuit, and the RC filter circuit is arranged between an eighth pin and a ninth pin of the current source.

10. The circuit for an LED driver of claim 1, wherein: the main control module is connected with a delay circuit.