CN215453344U

CN215453344U - Multi-loop LED drive controlled by direct-current power line carrier

Info

Publication number: CN215453344U
Application number: CN202121923745.7U
Authority: CN
Inventors: 管德贵
Original assignee: Guangdong Baota Electronic Technology Co ltd
Current assignee: Guangdong Baota Electronic Technology Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-07
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a multi-loop LED drive controlled by a direct current power line carrier, which comprises a direct current input end and a rectification filter circuit, wherein the direct current input end is also connected with a direct current carrier signal sampling circuit, a direct current carrier signal decoding-to-PWM circuit electrically connected with the output end of the direct current carrier signal sampling circuit, a plurality of PWM output control ports and a direct current constant current drive current size control port which are connected with the output end of the direct current carrier signal decoding-to-PWM circuit, the PWM output control ports are electrically connected with an independent direct current constant current circuit, and an LED load is fixed between the direct current constant current circuit and the output end of the rectification filter circuit. The structure of the utility model is reasonable, the current of the output loop can be adjusted without additionally increasing an auxiliary control signal circuit, one power supply can drive a plurality of groups of lamps, the current required by the driving loop can be independently adjusted according to different requirements, and the utility model has strong applicability and good practicability.

Description

Multi-loop LED drive controlled by direct-current power line carrier

Technical Field

The utility model belongs to the technical field of multi-path lamp control, and particularly relates to a multi-loop LED drive controlled by a direct current power line carrier.

Background

The corresponding driving circuit can be used in the application process of the lamp, in the prior art, the driving circuit of the lamp is mostly driven by a single circuit, namely, each lamp needs to correspond to one driving circuit and can not be independently controlled by the lamp of the same power main line, so that the use cost is greatly increased, the current of an output loop is not favorably regulated and controlled, the adjustability is limited, and the applicability and the practicability are limited.

Disclosure of Invention

The utility model aims to provide a multi-loop LED drive controlled by a direct current power line carrier, which is reasonable in structural arrangement and high in applicability.

The technical scheme for realizing the aim of the utility model is that the multi-loop LED drive controlled by the direct current power line carrier comprises a direct current input end, a rectifying and filtering circuit connected with the DC input end, a DC carrier signal sampling circuit connected with the DC input end, a DC carrier signal decoding-to-PWM circuit electrically connected with the output end of the DC carrier signal sampling circuit, a plurality of PWM output control ports and DC constant current drive current control ports connected with the output end of the DC carrier signal decoding-to-PWM circuit, each PWM output control port is electrically connected with an independent DC constant current circuit, the direct current constant current circuit is electrically connected with a direct current constant current driving current magnitude control port, an LED load is fixed between the direct current constant current circuit and the output end of the rectification filter circuit, and the anode of the LED load is electrically connected with the output end of the rectification filter circuit, and the cathode of the LED load is connected with the output end of the direct current constant current circuit.

And the direct current carrier signal decoding-to-PWM circuit is electrically connected with an address selection dial switch.

And a power supply pulse absorption circuit is arranged between the direct current input end and the rectification filter circuit.

The output end of the rectification filter circuit is also provided with an output DC5V voltage reduction circuit, and the output end of the output DC5V voltage reduction circuit is electrically connected with the power supply end of the direct current carrier signal sampling circuit and the power supply end of the direct current carrier signal decoding-to-PWM circuit.

The utility model has the positive effects that: the structure of the utility model is reasonably arranged, the current of the output loop can be adjusted without additionally adding an auxiliary control signal circuit under the control of the direct current input end, the cost is favorably reduced, meanwhile, the utility model is provided with a plurality of direct current constant current circuits, the installation and the connection of a plurality of paths of lamps can be effectively realized, one power supply can drive a plurality of groups of lamps, the current of each loop can be independently adjusted, the current required by each driving loop can be independently adjusted according to different requirements, the regulation and control performance is strong, the regulation is stable and reliable, the applicability is strong, and the practicability is good; meanwhile, the address selection dial switch is connected, the address can be directly selected through the dial switch, code writing is not needed, the selection cost is reduced, the operation is more visual, a direct current constant current driving current size control port is further arranged, the driving current size can be adjusted, the requirements of different conditions are met, and the practicability is high.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a block diagram of the present invention;

fig. 2 is a schematic diagram of the structure of the present invention.

Detailed Description

(example 1)

FIGS. 1 and 2 show an embodiment of the present invention, wherein FIG. 1 is a block diagram of the present invention; fig. 2 is a schematic diagram of the structure of the present invention.

Referring to fig. 1 and fig. 2, a multi-loop LED driver controlled by a DC power line carrier includes a DC input terminal 1, in this embodiment, a DC48V input is adopted, or other conventional DC inputs may also be adopted, a rectifying and filtering circuit 2 connected to the DC input terminal, the DC input terminal is further connected to a DC carrier signal sampling circuit 3, a DC carrier signal decoding and PWM converting circuit 4 electrically connected to an output terminal of the DC carrier signal sampling circuit, a plurality of PWM output control ports 5 and a DC constant current driving current magnitude control port 6 connected to an output terminal of the DC carrier signal decoding and PWM converting circuit, each PWM output control port is electrically connected to an independent DC constant current circuit 7, in this embodiment, the DC constant current circuit is a conventional structure in the prior art and is simply applied, the DC constant current circuit is electrically connected to the DC constant current driving current magnitude control port, an LED load 8 is fixed between the direct current constant current circuit and the output end of the rectification filter circuit, the positive pole of the LED load is electrically connected to the output end of the rectification filter circuit, and the negative pole of the LED load is connected to the output end of the direct current constant current circuit.

The direct current carrier signal decoding to PWM circuit is electrically connected with an address selection dial switch 9. In the embodiment, since it is a conventional address selection dial switch in the prior art, it is not described in detail, but is simply applied.

And a power supply pulse absorption circuit 10 is arranged between the direct current input end and the rectification filter circuit. In this embodiment, the power pulse absorption circuit is a TVS-bidirectional transistor.

The output end of the rectifying and filtering circuit is further provided with an output DC5V voltage-reducing circuit 11, in this embodiment, the model of a main chip of the output DC5V voltage-reducing circuit is 78L05, and the output end of the output DC5V voltage-reducing circuit is electrically connected with a power supply end of the direct-current carrier signal sampling circuit and a power supply end of the direct-current carrier signal decoding-to-PWM circuit. So as to ensure the use stability and reliability.

The structure of the utility model is reasonably arranged, the current of the output loop can be adjusted without additionally adding an auxiliary control signal circuit under the control of the direct current input end, the cost is favorably reduced, meanwhile, the utility model is provided with a plurality of direct current constant current circuits, the installation and the connection of a plurality of paths of lamps can be effectively realized, one power supply can drive a plurality of groups of lamps, the current of each loop can be independently adjusted, the current required by each driving loop can be independently adjusted according to different requirements, the regulation and control performance is strong, the regulation is stable and reliable, the applicability is strong, and the practicability is good; meanwhile, the address selection dial switch is connected, the address can be directly selected through the dial switch, code writing is not needed, the selection cost is reduced, the operation is more visual, a direct current constant current driving current size control port is further arranged, the driving current size can be adjusted, the requirements of different conditions are met, and the practicability is high.

The standard parts used in the present embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification can also be obtained directly by processing according to the common general knowledge of the prior art without any doubt, and the connection mode of the parts adopts the conventional means matured in the prior art, and the machines, parts and equipment adopt the conventional models in the prior art, so that the detailed description is not given here.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the utility model are deemed to be covered by the present invention.

Claims

1. The utility model provides a multiloop LED drive through direct current power line carrier control, includes direct current input, with the rectification filter circuit that direct current input is connected which characterized in that: the direct current input end is further connected with a direct current carrier signal sampling circuit, a direct current carrier signal decoding and PWM (pulse width modulation) circuit electrically connected with the output end of the direct current carrier signal sampling circuit, a plurality of PWM output control ports and a direct current constant current driving current size control port which are connected with the output end of the direct current carrier signal decoding and PWM circuit, each PWM output control port is electrically connected with an independent direct current constant current circuit, the direct current constant current circuit is electrically connected with the direct current constant current driving current size control port, an LED load is fixed between the direct current constant current circuit and the output end of the rectification filter circuit, and the positive electrode of the LED load is electrically connected with the output end of the rectification filter circuit and the negative electrode of the LED load is connected with the output end of the direct current constant current circuit.

2. The multi-loop LED driver controlled by the DC power line carrier as claimed in claim 1, wherein: and the direct current carrier signal decoding-to-PWM circuit is electrically connected with an address selection dial switch.

3. The multi-loop LED driver controlled by the DC power line carrier as claimed in claim 2, wherein: and a power supply pulse absorption circuit is arranged between the direct current input end and the rectification filter circuit.

4. The multi-loop LED driver controlled by the DC power line carrier as claimed in claim 3, wherein: the output end of the rectification filter circuit is also provided with an output DC5V voltage reduction circuit, and the output end of the output DC5V voltage reduction circuit is electrically connected with the power supply end of the direct current carrier signal sampling circuit and the power supply end of the direct current carrier signal decoding-to-PWM circuit.