CN101505567A - Control method and control system using DMX512 protocol - Google Patents
Control method and control system using DMX512 protocol Download PDFInfo
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- CN101505567A CN101505567A CNA2009101055937A CN200910105593A CN101505567A CN 101505567 A CN101505567 A CN 101505567A CN A2009101055937 A CNA2009101055937 A CN A2009101055937A CN 200910105593 A CN200910105593 A CN 200910105593A CN 101505567 A CN101505567 A CN 101505567A
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Abstract
The invention discloses a control system and a control method using a DMX512 protocol. The control system comprises a plurality of devices in cascade connection and a controller. The controller is connected with the devices through a DMX512 bus; the controller sends a control command for setting an address; the control command is forwarded from the upper devices in cascade connection to the lower devices in cascade connection; and the devices receiving the control command carry out the control command to perform address setting, and are communicated with the controller through the DMX512 bus. The system and the method integrate the advantages of two mainstream device connecting modes in the current market, overcome the defects of the two mainstream device connecting modes, and make the mounting of the devices more convenient and the work of the devices more reliable.
Description
Technical field
The present invention relates to a kind of control method, relate in particular to a kind of control method and control system of the DMX512 of use agreement.
Background technology
In light fixture light modulation and the control, people have adopted the control protocol of DMX512 in a large number, and the DMX512 agreement is to be transmitted the standard of 512 road controllable silicon light modulation monochrome informations on a pair of line by the energy that U.S. arenas technological associations (United State Institute for Theatre Technology.Inc) proposed in August, 1986.The DMX512 communication mode is to have adopted the asynchronous communication form, and each light modulation o'clock is formed by 11, and one of them is a start bit, 8 light modulation data, and two position of rests, transmission each time can 512 light modulation points.
As shown in Figure 1, the DMX512 agreement of standard is a kind of connected mode of parallel connection, and what promptly all equipment all walked abreast is connected on the DMX512 bus, and each equipment all has the address of oneself.Its advantage is: when any one equipment is inoperable, can not influence the work of other equipment.And its shortcoming is: each equipment all needs to be provided with separately the address, and this is loaded down with trivial details and make mistakes an easily job.
As shown in Figure 2, widely used in the market another kind of cascade connected mode is that the control bus cascade of equipment is connected, and does not need to be provided with the address, and data are forwarded to next equipment after through an equipment automatically.Its advantage: do not need to be provided with the address, easy for installation.Its shortcoming: when any one equipment can not be worked, data can't be forwarded to next equipment, cause all devices of same bus back can't operate as normal.
Summary of the invention
The present invention proposes a kind of control method and control system of the DMX512 of use agreement, by on the basis of the DMX512 of standard agreement, increase a cascade line with each equipment cascading control, thereby reached the advantage that control is convenient, simple and reliable operation are installed.
The present invention has adopted following technical scheme: a kind of control system of the DMX512 of use agreement, and it comprises:
The equipment that several cascades connect;
The controller that connects each equipment by the DMX512 bus;
Described controller sends a control command that the address is set, and the upper level device forwards that this control command is passed through to be connected by cascade is to next stage equipment; Carry out described control command by the equipment that receives described control command and carry out address setting, and communicate by DMX512 bus and described controller.
Preferably, described controller comprises at least:
The DMX512 bus interface connects each equipment by this DMX512 bus interface by the DMX512 bus;
Produce the processor of control command according to the DMX512 agreement;
Control command is forwarded to the communication interface of equipment, and this communication interface cascade connects each equipment.
Preferably, described communication interface comprises the synchronous communication interface and the asynchronous communication interface of serial ports, parallel port, Ethernet interface, optical fiber interface, IEEE1394 interface, blue tooth interface or infrared interface.
Preferably, described equipment comprises at least: the DMX512 bus interface; Communication interface; Carry out described control command and carry out address setting, and the control unit that communicates by DMX512 bus and described controller.
Preferably, described control unit is one of MCU, PLD, DSP, FPGA.
In addition, the present invention also discloses a kind of control method of the DMX512 of use agreement, and it comprises:
Each equipment cascading is connected, and each equipment all is connected to controller by the DMX512 bus;
Described controller sends a control command that the address is set, and the upper level device forwards that this control command is passed through to be connected by cascade is to next stage equipment;
Carry out described control command by the equipment that receives described control command and carry out address setting, and communicate by DMX512 bus and described controller.
Compared with prior art, the present invention has following beneficial effect:
This method has increased a cascade line and has connected each equipment on the basis of the DMX512 of standard agreement; After equipment installs, send a control command that the address is set by controller, each equipment is provided with the address automatically according to this order; Then, equipment just can carry out work according to standard DMX512 agreement.Therefore, the present invention combines the advantage of the equipment connection mode of two kinds of main flows in the market, has overcome their shortcoming, makes the easier for installation of equipment, and it is more reliable to work.
Description of drawings
Fig. 1 is the schematic diagram for the equipment that is connected in parallel that uses the DMX512 agreement;
Fig. 2 is the schematic diagram that adopts the cascade connection device;
Fig. 3 is a structural representation of the present invention.
Embodiment
As shown in Figure 3, the equipment 20 that several cascades connect is connected to controller 10, and each equipment 20 all connects controller 10 by DMX512 bus 30.
Wherein, described controller 10 comprises at least: the DMX512 bus interface that connects each equipment 20 by DMX512 bus 30; Produce the processor of control command according to the DMX512 agreement; Control command is forwarded to the communication interface of equipment, and this communication interface cascade connects each equipment 20.
Corresponding with described controller 10 is that described equipment comprises at least: the DMX512 bus interface; Communication interface; Carry out described control command and carry out address setting, and the control unit that communicates by DMX512 bus and described controller.
Wherein, described communication interface comprises the synchronous communication interface and the asynchronous communication interface of serial ports, parallel port, Ethernet interface, optical fiber interface, IEEE1394 interface, blue tooth interface or infrared interface; Described control unit is one of MCU, PLD, DSP, FPGA.
Control principle of the present invention is as follows:
Send a control command that the address is set by described controller 10, this control command is transmitted by the equipment 20 that cascade connects, carry out described control command by the equipment that receives this control command and carry out address setting, and communicate by DMX512 bus 30 and described controller 10.Such as, described controller 10 sends after the control command, is received by equipment 1 earlier, and equipment 1 is carried out this control command and is carried out address setting, and equipment 1 can communicate by DMX512 bus 30 and described controller 10 afterwards; Then, equipment 1 is forwarded to the equipment 2 that cascade with it connects with this control command, carries out this control command by equipment 2 and carries out address setting; Secondly, equipment 2 just this control command is forwarded to the equipment 3 that cascade with it connects, by that analogy, receive and carry out after this control command carries out address setting up to the equipment n of cascade, each equipment all can communicate by DMX512 bus 30 and described controller 10.
To sum up, the present invention combines the in the market advantage of the equipment connection mode of two kinds of main flows, has overcome their shortcoming, So that equipment easier for installation, work more reliable.
Claims (6)
1, a kind of control system of using the DMX512 agreement is characterized in that, comprising:
The equipment that several cascades connect;
The controller that connects each equipment by the DMX512 bus;
Described controller sends a control command that the address is set, and the upper level device forwards that this control command connects by cascade is to next stage equipment; Carry out described control command by the equipment that receives described control command and carry out address setting, and communicate by DMX512 bus and described controller.
2, according to the control method of the described use of claim 1 DMX512 agreement, it is characterized in that described controller comprises at least:
The DMX512 bus interface connects each equipment by this DMX512 bus interface by the DMX512 bus;
Produce the processor of control command according to the DMX512 agreement;
Control command is forwarded to the communication interface of equipment, and this communication interface cascade connects each equipment.
3, according to the described control method of using the DMX512 agreement of claim 2, it is characterized in that described communication interface comprises the synchronous communication interface and the asynchronous communication interface of serial ports, parallel port, Ethernet interface, optical fiber interface, IEEE1394 interface, blue tooth interface or infrared interface.
4, according to the control method of the described use of claim 1 DMX512 agreement, it is characterized in that described equipment comprises at least:
The DMX512 bus interface;
Communication interface;
Carry out described control command and carry out address setting, and the control unit that communicates by DMX512 bus and described controller.
5, according to the control method of the described use of claim 4 DMX512 agreement, it is characterized in that described control unit is one of MCU, PLD, DSP, FPGA.
6, a kind of control method of using the DMX512 agreement is characterized in that, comprising:
Each equipment cascading is connected, and each equipment all is connected to controller by the DMX512 bus;
The upper level device forwards that this control command is passed through to be connected by cascade is to next stage equipment;
Carry out described control command by the equipment that receives described control command and carry out address setting, and communicate by DMX512 bus and described controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101055937A CN101505567A (en) | 2009-02-27 | 2009-02-27 | Control method and control system using DMX512 protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101055937A CN101505567A (en) | 2009-02-27 | 2009-02-27 | Control method and control system using DMX512 protocol |
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| CN101505567A true CN101505567A (en) | 2009-08-12 |
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| CNA2009101055937A Pending CN101505567A (en) | 2009-02-27 | 2009-02-27 | Control method and control system using DMX512 protocol |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014556A (en) * | 2010-10-14 | 2011-04-13 | 深圳市长运通光电技术有限公司 | Method, device and system for controlling LED (Light Emitting Diode) lighting equipment |
| CN102036439A (en) * | 2010-09-21 | 2011-04-27 | 浙江大学 | Automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method |
| CN101711076B (en) * | 2009-11-18 | 2013-01-23 | 广州中大中鸣科技有限公司 | DMX512 communication link and method thereof |
| CN102609376B (en) * | 2011-01-25 | 2017-02-08 | 深圳市摩西尔电子有限公司 | Serial bus memory, serial bus transmission system and method |
| CN108429664A (en) * | 2018-03-16 | 2018-08-21 | 莱昊(上海)光电科技有限公司 | Address set information processing method, lamps and lanterns and lamps and lanterns addressing method |
| CN109548235A (en) * | 2018-11-30 | 2019-03-29 | 广州市雅江光电设备有限公司 | A kind of synchronisation control means and system of computer head moving lamp |
-
2009
- 2009-02-27 CN CNA2009101055937A patent/CN101505567A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711076B (en) * | 2009-11-18 | 2013-01-23 | 广州中大中鸣科技有限公司 | DMX512 communication link and method thereof |
| CN102036439A (en) * | 2010-09-21 | 2011-04-27 | 浙江大学 | Automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method |
| CN102036439B (en) * | 2010-09-21 | 2014-09-03 | 浙江大学 | Automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method |
| CN102014556A (en) * | 2010-10-14 | 2011-04-13 | 深圳市长运通光电技术有限公司 | Method, device and system for controlling LED (Light Emitting Diode) lighting equipment |
| CN102609376B (en) * | 2011-01-25 | 2017-02-08 | 深圳市摩西尔电子有限公司 | Serial bus memory, serial bus transmission system and method |
| CN108429664A (en) * | 2018-03-16 | 2018-08-21 | 莱昊(上海)光电科技有限公司 | Address set information processing method, lamps and lanterns and lamps and lanterns addressing method |
| CN109548235A (en) * | 2018-11-30 | 2019-03-29 | 广州市雅江光电设备有限公司 | A kind of synchronisation control means and system of computer head moving lamp |
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Application publication date: 20090812 |