CN203301513U - Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation - Google Patents
Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation Download PDFInfo
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- CN203301513U CN203301513U CN201320116545XU CN201320116545U CN203301513U CN 203301513 U CN203301513 U CN 203301513U CN 201320116545X U CN201320116545X U CN 201320116545XU CN 201320116545 U CN201320116545 U CN 201320116545U CN 203301513 U CN203301513 U CN 203301513U
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- serial interface
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- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 24
- 230000005622 photoelectricity Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
An Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation is mainly composed of a host processor, an Ethernet communication module, an 8-path asynchronous serial interface module, a photoelectric isolation module, and an isolated DC/AC power conversion module. The host processor is in electric connection with the Ethernet communication module and the 8-path asynchronous serial interface module. The Ethernet communication module is in electric connection with peripheral equipment. The 8-path asynchronous serial interface module is in electric connection with the peripheral equipment through the photoelectric isolation module. The isolated DC/AC power conversion module supplies power to the host processor, the Ethernet communication module, the 8-path asynchronous serial interface module and the photoelectric isolation module.
Description
Technical field
The utility model relates to a kind of interface conversion control module.
Background technology
Present existing Ethernet turns the asynchronous serial communication interface control module, be mostly Ethernet and turn the single channel Asynchronous Serial Interface or turn the two-way Asynchronous Serial Interface, and the external communication interface of Asynchronous Serial Interface (RS-232 or RS-485 interface) does not possess isolation characteristic usually.Much have RS-232 or RS485 scsi sid because industry spot has usually,, if use Ethernet turn single channel or two-way Asynchronous Serial Interface control module need multiple devices, increase equipment investment; Because the industry spot interference source is many, interference magnitude is large simultaneously, if there is no electrical isolation, RS-232 or RS-485 interface are easy to interference signal is introduced device interior, cause the equipment cisco unity malfunction.
The utility model content
The utility model purpose is to overcome current Ethernet to turn the serial ports number of serial ports less, and there is no the shortcoming of electrical isolation.This type photoelectric isolating Ethernet turns 8 road Asynchronous Serial Interface control modules, take 32 level controller LM4F232 of the up-to-date CORTEX-M4 kernel of TIX as control core, realize the transition of communications of Ethernet to 8 road Asynchronous Serial Interfaces, adopt simultaneously photoelectric coupling technology to realize the electrical isolation of the external communication interface of 8 road Asynchronous Serial Interfaces.Reduce the input cost of the data acquisition equipment of industry spot, improved the communication reliability of system, increased the stability of equipment work.
According to specification requirement, described Ethernet with photoelectricity isolation turns 8 road Asynchronous Serial Interface control modules, mainly by primary processor, and the ethernet communication module, 8 road Asynchronous Serial Interface modules, photoelectric isolation module, isolated form DC/DC power transfer module forms; Primary processor and ethernet communication module and 8 road Asynchronous Serial Interface module electrical connections; Ethernet communication module and the electrical connection of ancillary equipment equipment; 8 road Asynchronous Serial Interface modules are by photoelectric isolation module and ancillary equipment electrical connection; Isolated form DC/DC power transfer module provides power supply for primary processor, ethernet communication module, 8 road Asynchronous Serial Interface modules and photoelectric isolation module.8 road Asynchronous Serial Interface modules, comprise 4 road RS-232 modules and 4 road RS-485 modules.
Because the module support reaches 8 road Asynchronous Serial Interfaces, in order to determine different interfaces correct the distribution, each serial line interface has an independent port numbers, while changing mutually between Ethernet protocol and asynchronous serial communication protocol, by central processing unit, information discriminating is classified, determine the port numbers that information is corresponding, then according to port numbers, determine to realize changing between which serial line interface and Ethernet.
Because the electric parameter of external equipment is complicated, directly by serial ports and external device communication, very likely cause the electric parameter of inside modules abnormal, so the module asynchronous serial port arranges photoelectric isolation module, realize the electrical isolation of the external communication interface of 8 road Asynchronous Serial Interfaces.
This module support is 8 road Asynchronous Serial Interfaces nearly, 4 road isolated form RS-232 interface wherein, 4 road isolated form RS-485 interfaces.Due to the external communication interface that possesses two kinds of standards, thus the quantity of industry spot data acquisition equipment reduced, thus Cost reduction drops into; , owing to adopting photoelectric isolation technology, stop the large interference of industry spot and noise and entered system by RS-232 and RS-485 interface simultaneously, improved the stability of system works.
Description of drawings
Accompanying drawing 1 is the overall structure figure of native system.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
It is the overall structure of system as Fig. 1.Specifically, the system primary processor is communicated by letter with ethernet controller by the SPI interface, the ethernet communication function of realization and data center server, and communication protocol is ICP/IP protocol.Data center server sends to needs the Command encapsulate of instrument of industry spot in ICP/IP protocol, and with specific tcp port number, send primary processor to by Ethernet, primary processor parses the order that data center server sends in the data of receiving, and order is sent to and receive tcp port number RS-232 and RS-485 interface one to one, realize that data center server arrives the transmission of the teleinstruction of instrument.After the instrument of industry spot receives orders, the data that needs returned to data center server send to master controller by RS-232 or RS-485 interface, master controller is again the data of receiving, be packaged into ICP/IP protocol, return to data center server by Ethernet, thus realized take Industrial Ethernet as core data center server directly and the RS-232 of industry spot or the two-way reliable data communication of RS-485 scsi sid.
Claims (2)
1. the Ethernet with photoelectricity isolation turns 8 road Asynchronous Serial Interface control modules, and this module is mainly by primary processor, the ethernet communication module, and 8 road Asynchronous Serial Interface modules, photoelectric isolation module, isolated form DC/DC power transfer module forms; Primary processor and ethernet communication module and 8 road Asynchronous Serial Interface module electrical connections; Ethernet communication module and the electrical connection of ancillary equipment equipment; 8 road Asynchronous Serial Interface modules are by photoelectric isolation module and ancillary equipment electrical connection; Isolated form DC/DC power transfer module provides power supply for primary processor, ethernet communication module, 8 road Asynchronous Serial Interface modules and photoelectric isolation module.
2. the Ethernet with photoelectricity isolation according to claim 1 turns 8 road Asynchronous Serial Interface control modules, it is characterized in that described 8 road Asynchronous Serial Interface modules comprise 4 road RS-232 modules and 4 road RS-485 modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320116545XU CN203301513U (en) | 2013-03-15 | 2013-03-15 | Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320116545XU CN203301513U (en) | 2013-03-15 | 2013-03-15 | Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301513U true CN203301513U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320116545XU Expired - Fee Related CN203301513U (en) | 2013-03-15 | 2013-03-15 | Ethernet to 8-path asynchronous serial interface control module having photoelectric isolation |
Country Status (1)
| Country | Link |
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| CN (1) | CN203301513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009852A (en) * | 2014-06-06 | 2014-08-27 | 盈亨科技(上海)有限公司 | Multifunctional communication device |
-
2013
- 2013-03-15 CN CN201320116545XU patent/CN203301513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009852A (en) * | 2014-06-06 | 2014-08-27 | 盈亨科技(上海)有限公司 | Multifunctional communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140315 |