CN209994598U

CN209994598U - Small-volume 12-channel DMX constant-current/constant-voltage driver

Info

Publication number: CN209994598U
Application number: CN201920376876.4U
Authority: CN
Inventors: 李猛潮; 王伟; 廖华敏
Original assignee: Zhuhai Mindi Lighting Electrical Appliances Co Ltd
Current assignee: Zhuhai Mindi Lighting Electrical Appliances Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-24
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses a small-size 12-channel DMX constant current/constant voltage driver, wherein the leftmost side of one panel of the shell is provided with two layers of 12 channel output sockets, the upper layer of the right side is provided with a dial switch and a group of DMX512 address selection dial plates, the lower layer of the right side is provided with a DMX512 signal input port, a DMX512 signal output port and a voltage input control port; the circuit is characterized in that a circuit main board is arranged in the shell, the DMX512 input port/voltage input control port inputs DMX512 signals/voltage control signals to the circuit main board, the circuit main board obtains controlled address, channel and brightness information according to the input control signals, outputs 12 paths of PWM control signals and outputs the PWM control signals to the lamp bank through corresponding constant current/constant voltage driving chips. The utility model discloses a two-layer structure about, convenient production, the maintenance, the output can divide into the nimble configuration of 6 passageways to 12 passageways according to the customer's demand, and is small, and the address selection driver plate is directly perceived clear, and the easy to assemble uses, raises the efficiency.

Description

Small-volume 12-channel DMX constant-current/constant-voltage driver

Technical Field

The utility model relates to a DMX constant current/constant voltage driver field especially indicates a little volume 12 passageway DMX constant current/constant voltage driver.

Background

The conventional DMX constant-current/constant-voltage driver has large volume, is inconvenient to produce, install and use and has low efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a little volume 12 passageway DMX constant current/constant voltage driver adopts upper and lower two-layer structure, convenient production, and the maintenance, the output can divide into the nimble configuration of 6 passageways to 12 passageways according to the customer's demand, and is small, and the address selection driver plate is directly perceived clear, and easy to assemble uses raises the efficiency.

The technical scheme of the utility model is realized like this:

a small-size 12-channel DMX constant-current/constant-voltage driver comprises a shell, wherein the leftmost side of one panel of the shell is provided with two layers of 12-channel output sockets, the upper layer of the right side is provided with a dial switch and a group of DMX512 address selection dial plates, the lower layer of the right side is provided with a DMX512 signal input port, a DMX512 signal output port and a voltage input control port; the LED lamp is characterized in that a circuit main board is arranged in the shell, a DMX512 input port/voltage input control port inputs DMX512 signals/voltage control signals to the circuit main board, the circuit main board obtains controlled address, channel and brightness information according to the input control signals, outputs 12 paths of PWM control signals and outputs the signals to the lamp set through corresponding constant current driving chips.

Preferably, the housing is a rectangular parallelepiped.

Preferably, the size of the shell is 160mm in length, 133mm in width and 45mm in height.

Preferably, the dial switch is a 3-bit dial switch.

Preferably, the voltage input control port inputs 1-10V control voltage.

Preferably, the DMX512 signal input port and the DMX512 signal output port are connected with a 485 chip, and the 485 chip is connected with the MCU.

Preferably, the voltage input control port is connected with a voltage division isolation circuit, and an output end of the voltage division isolation circuit is connected with the MCU.

Preferably, the lower layer of the right side of the shell is also provided with a power supply port.

Preferably, a fan is arranged in the shell.

Preferably, the PCB is arranged in the shell, a heat dissipation aluminum sheet is arranged at the position where the PCB generates heat, the upper surface of the heat dissipation aluminum sheet is in contact with the PCB, and the lower surface of the heat dissipation aluminum sheet is in contact with the inner surface of the shell.

The beneficial effects of the utility model reside in that: the structure of the upper layer and the lower layer is adopted, the production and the maintenance are convenient, the output can be divided into flexible configuration from 6 channels to 12 channels according to the requirements of customers, the size is small, the address selection dial plate is visual and clear, the installation and the use are convenient, and the efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a front panel structure of a small-volume 12-channel DMX constant current/constant voltage driver housing according to the present invention;

fig. 2 is a schematic diagram of a rear panel structure of a small-volume 12-channel DMX constant-current/constant-voltage driver housing according to the present invention;

FIG. 3 is one of the schematic circuit diagrams of the present invention;

fig. 4 is a second schematic circuit diagram of the present invention;

fig. 5 is a third schematic circuit diagram of the present invention;

fig. 6 is a fourth schematic circuit diagram of the present invention.

In the figure, 1-dial switch; 2-DMX512 address selection dial; 3-an output socket; 4-DMX512 signal input port; 5-DMX512 signal output port; 6-voltage input control port; 7-power port; 8-a PCB board; 9-radiating aluminum sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a small-size 12-channel DMX constant current/constant voltage driver, which comprises a housing, wherein the leftmost side of one of the panels of the housing is provided with two layers of 12 channel output sockets 3, the upper layer of the right side is provided with a dial switch 1 and a group of DMX512 address selection dial plates 2, the lower layer of the right side is provided with a DMX512 signal input port 4, a DMX512 signal output port 5 and a voltage input control port 6; the circuit is characterized in that a circuit main board is arranged in the shell, the DMX512 input port/voltage input control port 6 inputs DMX512 signals/voltage control signals to the circuit main board, the circuit main board obtains controlled address, channel and brightness information according to the input control signals, outputs 12 paths of PWM control signals and outputs the signals to the lamp bank through corresponding constant current driving chips. The dial switch 1 is a 3-bit dial switch 1. The customer can select any channel from 6 channels to 12 channels for output through the dial switch 1, and the DMX512 address selection dial 2 has the functions of setting DMX addresses and switching the working modes of drivers.

The shell is a cuboid. The overall size of the driver (including the power port) is 160mm, the width is 150mm, and the height is 45mm, wherein the size of the shell is 160mm long, 133mm wide, and 45mm high. The utility model is in a flat rectangle and has small volume. The lower layer of the right side of the shell is also provided with a power supply port 7. A fan is arranged in the shell. The PCB board 8 is arranged in the shell, the heat dissipation aluminum sheet 9 is arranged at the position where the PCB board 8 generates heat, the upper surface of the heat dissipation aluminum sheet 9 is in contact with the PCB board, the lower surface of the heat dissipation aluminum sheet is in contact with the inner surface of the shell, the heat generated by the working of the PCB board is directly conducted to the shell, the integral heat dissipation effect is achieved, and the DMX controls the constant current output.

The voltage input control port 6 inputs 1-10V control voltage. The DMX512 signal input port 4, the DMX512 signal output port 5 are connected with the 485 chip, and the 485 chip is connected with the MCU. The voltage input control port 6 is connected with a voltage division isolation circuit, and the output end of the voltage division isolation circuit is connected with the MCU.

The working principle is as follows: and after the input DMX512 signal or the 1-10V control quantity is interpreted, the output duty ratio of the corresponding channel is controlled in real time.

The working process is as follows: the input DMX512 signal is differentially received by a DMX interface through a 485IC and then output to an MCU for processing, 1-10V voltage input is also output to the MCU after voltage division and isolation, the MCU obtains control address, channel and brightness information according to the input control signal, outputs 12 paths of PWM control signals and outputs the signals to a lamp group through a corresponding constant current/constant voltage driving chip to complete the whole control process. In fig. 3, the MCU outputs 12 PWM control signals, and in the constant current driving mode, the constant current driving circuit shown in fig. 5 is used, where the number of the constant current driving chips shown in fig. 5 is 2, and there are 12 constant current driving chips, and all the constant current driving chips have the same circuit. In the constant voltage driving mode, the constant voltage driving circuit of fig. 6 is used, the number of the constant voltage driving chips of fig. 6 is 6, and there are 12 constant voltage driving chips, and all the constant voltage driving chips are the same.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A little volume 12 passageway DMX constant current/constant voltage driver, includes the casing, its characterized in that: the left-most side of one panel of the shell is provided with two layers of 12 channel output sockets, the upper layer of the right side is provided with a dial switch and a group of DMX512 address selection dials, and the lower layer of the right side is provided with a DMX512 signal input port, a DMX512 signal output port and a voltage input control port; the circuit is characterized in that a circuit main board is arranged in the shell, the DMX512 input port/voltage input control port inputs DMX512 signals/voltage control signals to the circuit main board, the circuit main board obtains controlled address, channel and brightness information according to the input control signals, outputs 12 paths of PWM control signals and outputs the PWM control signals to the lamp bank through corresponding constant current/constant voltage driving chips.

2. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: the shell is a cuboid.

3. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: the dial switch is a 3-bit dial switch.

4. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: the voltage input control port inputs 1-10V control voltage.

5. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: the DMX512 signal input port and the DMX512 signal output port are connected with a 485 chip, and the 485 chip is connected with the MCU.

6. The small-volume 12-channel DMX constant current/constant voltage driver according to claim 1 or 5, wherein: the voltage input control port is connected with a voltage division isolation circuit, and the output end of the voltage division isolation circuit is connected with the MCU.

7. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: and the lower layer on the right side of the shell is also provided with a power supply port.

8. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: a fan is arranged in the shell.

9. The small-volume 12-channel DMX constant current/constant voltage driver of claim 1, wherein: the PCB is arranged in the shell, a heat dissipation aluminum sheet is arranged at the position where the PCB generates heat, the upper surface of the heat dissipation aluminum sheet is in contact with the PCB, and the lower surface of the heat dissipation aluminum sheet is in contact with the inner surface of the shell.