DMX512 communication link and method thereof

A DMX512, communication link technology, used in signal transmission systems, lamp circuit layout, lighting devices, etc., to achieve the effect of improving driving capability, avoiding waste of resources, and avoiding interference

Active Publication Date: 2010-05-19
广州中大中鸣科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, most of the current DMX512 lighting control systems directly connec...

Method used

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  • DMX512 communication link and method thereof
  • DMX512 communication link and method thereof
  • DMX512 communication link and method thereof

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Embodiment Construction

[0026] In order to explain the technical features of the present invention more deeply, the detailed description will be given below in conjunction with the accompanying drawings.

[0027] figure 1 Shown is the block diagram of the DMX512 lamp control system where the DMX512 communication link of the present invention is located. The system is mainly composed of four parts: host computer 101, DMX512 signal generator 102, DMX signal decoder 103 and lamps 104. The upper computer 101 has a built-in control software, which configures the working parameters of the DMX signal generator and sends lighting control signals through the Ethernet interface. The DMX signal generator 102 sends standard DMX512 signals according to the received signals. After receiving the control signal from the DMX signal generator, the DMX signal decoder 103 decodes and verifies the data, and re-encodes the signal and sends it to the lamp 104 . The DMX signal decoder is connected to the DMX512 lamps in ...

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Abstract

The invention discloses a DMX512 communication link and a method thereof. The DMX512 communication link is used for a DMX512 lamp control system and as the data transmission channel of a DMX signal decoder and a controlled lamp. The DMX512 communication link comprises the DMX signal decoder and a DMX512 communication link and lamp receiving and transmitting device, wherein the DMX signal decoder is connected with the DMX512 communication link and lamp receiving and transmitting device through a phase line L, a zero line N, a ground line G and a data line. The method of the DMX512 communication link comprises the steps of (1) sending the DMX512 communication link and (2) receiving the DMX512 communication link. The invention reduces the wiring cost of the DMX512 lamp control system, improves the driving capacity of the data bus and ensures that the DMX signal decoder can drive a plurality of DMX512 lamps in a long distance.

Description

technical field [0001] The invention relates to the technical field of lamp control, in particular to a DMX512 communication link applied to a DMX512 lamp control system and a method thereof. Background technique [0002] LED lamps are widely used in the decoration of buildings such as stages and streets. The current LED lighting control system often adopts the bus control method. The DMX512 bus protocol is a stage lighting control protocol released by USITT (American Theater Technology Association) in 1986. It has become an international standard protocol and is widely used by various lighting control systems. The standard DMX512 bus protocol stipulates a data frame of a specific length, and the data capacity of each data frame is 513 bytes, which includes a start code of one byte. The bus control method is generally controlled by the DMX512 bus protocol. Each product is set with a unique address. One frame of data can contain up to 512 bytes of data, and one data channel...

Claims

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Application Information

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IPC IPC(8): H05B37/02G08C15/00
Inventor 蔡如海黄以华廖世文刘燕林张健翀张耀天
Owner 广州中大中鸣科技有限公司
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