CN209184615U

CN209184615U - A kind of PROFIBUS optoelectronic coupling system

Info

Publication number: CN209184615U
Application number: CN201920007347.7U
Authority: CN
Inventors: 王鹏
Original assignee: Bosentek (beijing) Technology Co Ltd
Current assignee: Bosentek (beijing) Technology Co Ltd
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2019-07-30
Anticipated expiration: 2029-01-03

Abstract

A kind of PROFIBUS optoelectronic coupling system comprising several groups photoelectric coupling module, each photoelectric coupling module include: PROFIBUS DP repeater module, optic module, data transmission backboard, data access interface module, power supply module；PROFIBUS DP repeater module includes that circuit occurs for isolation circuit and RS485, for sending and receiving physics electric signal；Optic module executes the conversion between optical signal and electric signal, and optical signal sends and receivees, and provides optical fiber interface to connect fiber optic cable；It transmits backboard by data between modules to carry out data transmission, modules are combined installation in a manner of slot；Data access interface module detection data uploads and access, using standard ethernet interface, testing result is remotely checked and is accessed；Power supply module provides steady operation power supply for optoelectronic coupling system.

Description

A kind of PROFIBUS optoelectronic coupling system

Technical field

The utility model belongs to the technical field of electricity, more particularly to a kind of PROFIBUS optoelectronic coupling system.

Background technique

PROFIBUS is the abbreviation of program bus network (Process Field Bus).Its industry as current main-stream One of fieldbus communication protocol has been widely used in the automatic control system of every profession and trade.

PROFIBUS bus communication is as the bus protocol for being now widely used for industry spot, the stability pair of signal Going on smoothly for production is most important.Since bus network is different from intraoffice network, use environment is complex severe Industrial environment, therefore in practical application there are it is various influence signal qualities factors, wherein more it is outstanding is exactly industry show The various electrical Interferences of field, electric signal is more sensitive for interference signal, is easy to be affected during transmission, and optical fiber Stability be then better than cable, it is not easy to be interfered；In addition, the transmission range of optical signal is also far longer than electric signal, therefore When remote transmission and it is desirable that in the better situation of signal stabilization, it may be considered that use optical transport, and PROFIBUS controller It is electric signal with sending and receiving for equipment, just needs to realize between optical signal and electric signal using photoelectrical coupler at this time Mutual conversion.

General photoelectrical coupler has many in actual use since electric signal and optical signal interface quantity are all fixed Limitation.In addition, it is larger using the general physical size of system that optical fiber transmits at a distance, between equipment and equipment horizontally or vertically Farther out, simultaneously because having electric signal and optical signal simultaneously in system, the network architecture is relatively more complicated for distance, once there is event Barrier, is related to link and increases, and investigation is got up more difficult.Therefore either design early period or later maintenance, all exists centainly Limitation and difficulty.

Summary of the invention

The technology of the utility model solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of PROFIBUS photoelectricity coupling Collaboration system, can be freely combined according to actual needs, break the limitation of network structure, make especially in redundant system With more flexible；Field device physical location is more conducive to saving cost when complex, avoids wasting.

The technical solution of the utility model is: this PROFIBUS optoelectronic coupling system comprising several groups photoelectricity Coupling module, each photoelectric coupling module include: PROFIBUS DP repeater module, optic module, data transmission backboard, number According to access interface module, power supply module；PROFIBUS DP repeater module includes that circuit occurs for isolation circuit and RS485, is used to Send and receive physics electric signal；Optic module executes the conversion between optical signal and electric signal, and optical signal sends and receivees, Optical fiber interface is provided to connect fiber optic cable；It transmits backboard by data between modules to carry out data transmission, modules Installation is combined in a manner of slot；Data access interface module detection data uploads and access, is connect using standard ethernet Mouthful, testing result is remotely checked and accessed；Power supply module provides steady operation power supply for optoelectronic coupling system.

Since the PROFIBUS optoelectronic coupling system of the utility model includes several groups photoelectric coupling module, each photoelectricity coupling Molding block includes: PROFIBUS DP repeater module, optic module, data transmission backboard, data access interface module, power supply Module；PROFIBUS DP repeater module includes that circuit occurs for isolation circuit and RS485, for sending and receiving physics telecommunications Number；Optic module executes the conversion between optical signal and electric signal, and optical signal sends and receivees, and provides optical fiber interface to connect Fiber optic cable；It transmits backboard by data between modules to carry out data transmission, modules carry out group in a manner of slot Close installation；Data access interface module detection data uploads and access, using standard ethernet interface, remotely looks into testing result It sees and accesses；Power supply module provides steady operation power supply for optoelectronic coupling system；Photoelectric coupling link electric signal and light letter in this way Number channel and interface can all be freely combined according to actual needs, break the limitation of network structure, especially in redundant system Using more flexible；When field device physical location is complex, modular combination is more conducive to saving cost, avoids wave Take.

Detailed description of the invention

Fig. 1 is circuit block diagram according to the present utility model.

Specific embodiment

As shown in Figure 1, this PROFIBUS optoelectronic coupling system comprising several groups photoelectric coupling module, each photoelectricity Coupling module includes: PROFIBUS DP repeater module, optic module, data transmission backboard, data access interface module, supplies Electric module；PROFIBUS DP repeater module includes that circuit occurs for isolation circuit and RS485, for sending and receiving physics electricity Signal；Optic module executes the conversion between optical signal and electric signal, and optical signal sends and receivees, and provides optical fiber interface to connect Connect fiber optic cable；It transmits backboard by data between modules to carry out data transmission, modules are carried out in a manner of slot Combination installation, convenient for extension；Data access interface module detection data uploads and access, using standard ethernet interface, to inspection Result is surveyed remotely to check and access；Power supply module provides steady operation power supply for optoelectronic coupling system.It can be between disparate modules Independent assortment extension, can also be according to real network scale, and the optoelectronic coupling systems that cover are used in combination more.

Further, the photoelectric coupling module further includes electrical signal detection module comprising digital oscilloscope and report Literary analyzer, oscillograph are used to show the real-time waveform of physical signal, and message analysis instrument is used to detect whether link layer message has Mistake.

Further, each optic module provides two groups of optical fiber interfaces, establishes various connection structures, such as star to realize The topologys such as type, tree-shaped, bus-type, ring-like.

Further, the photoelectric coupling module further includes optical signal detecting module, is configured to detect optical signal Intensity.

In addition, the power supply module uses standard 24V direct-current dual power.

Preferably, which is dual controller redundant system, and the signal of master controller and redundant manipulator is defeated It is respectively connected to two PROFIBUS DP repeater modules out, and the module for connecting redundant manipulator is set as redundant mode, mould Backboard is transmitted by data between block to be communicated；Physical layer signal waveform and link layer message to controller output signal into Row real-time detection, detection data are uploaded by standard ethernet interface；Optical fiber is inserted into after PROFIBUS DP repeater module Module realizes that electric signal to the conversion between optical signal, connects fiber optic cable, each optic module by optical fiber interface later Comprising transmission signal and signal is received, the luminous intensity for receiving signal is measured in real time, and be will test result and passed through together One standard ethernet interface uploads；The output signal of optic module accesses the optic module of another group of optoelectronic coupling system, it The conversion of optical signal to electric signal is again passed by afterwards, is transmitted backboard by data and is transferred to the PROFIBUS DP repeater with group Module；After controlled device is sequentially connected, PROFIBUS DP repeater module interface is accessed；For controlled device The communication quality of PROFIBUS DP electric signal and optical signal, is also measured in real time, and detection data passes through standard ethernet Interface uploads.

Further, multiple standard ethernet interfaces are uniformly accessed into Central Control Room using interchanger, connect PC machine, passes through IP address accesses each group photoelectric coupling module, to check the communications status and signal quality of all websites.

Further, the standard 24V direct-current dual power, two power interfaces are separately connected system power supply and independent electrical Source.

The beneficial effects of the utility model are as follows:

The combination of modular unrestricted choice according to actual needs, breaks the limitation of network structure, especially in redundancy In system using more flexible；When field device physical location is complex, modular combination is more conducive to saving cost, It avoids wasting.

It realizes the long-range monitoring of electric signal and optical signal communications quality, finds the position, different of abnormal signal in network in time Normal type, instructs service direction, avoids communication failure from influencing production, to reduce economic loss to greatest extent.

When communication failure occurs, without time-consumingly check at the scene all communication nodes, especially field condition compared with When for complexity, helps to search failure cause, shorten failure recovery time.

The above is only the preferred embodiment of the utility model, not makees limit in any form to the utility model System, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, Still belong to the protection scope of technical solutions of the utility model.

Claims

1. a kind of PROFIBUS optoelectronic coupling system, it is characterised in that: it includes several groups photoelectric coupling module, each photoelectricity coupling Molding block includes: PROFIBUSDP repeater module, optic module, data transmission backboard, data access interface module, power supply mould Block；PROFIBUSDP repeater module includes that circuit occurs for isolation circuit and RS485, for sending and receiving physics electric signal； Optic module executes the conversion between optical signal and electric signal, and optical signal sends and receivees, and provides optical fiber interface to connect light Fine cable；It transmits backboard by data between modules to carry out data transmission, modules are combined in a manner of slot Installation；Data access interface module detection data uploads and access, using Ethernet interface, testing result is remotely checked and is visited It asks；Power supply module provides steady operation power supply for optoelectronic coupling system.

2. PROFIBUS optoelectronic coupling system according to claim 1, it is characterised in that: the photoelectric coupling module is also wrapped Include electrical signal detection module comprising digital oscilloscope and message analysis instrument, oscillograph are used to show the real-time wave of physical signal Whether shape, message analysis instrument are used to detect link layer message wrong.

3. PROFIBUS optoelectronic coupling system according to claim 2, it is characterised in that: each optic module provides two groups Optical fiber interface establishes connection structure to realize.

4. PROFIBUS optoelectronic coupling system according to claim 3, it is characterised in that: the photoelectric coupling module is also wrapped Optical signal detecting module is included, is configured to detect the intensity of optical signal.

5. PROFIBUS optoelectronic coupling system according to claim 1, it is characterised in that: the power supply module uses 24V Direct-current dual power.

6. PROFIBUS optoelectronic coupling system according to claim 5, it is characterised in that: the optoelectronic coupling system is dual control The signal output of device redundant system processed, master controller and redundant manipulator is respectively connected to two PROFIBUSDP repeater modules, And the module for connecting redundant manipulator is set as redundant mode, backboard is transmitted by data between module and is communicated；To control The physical layer signal waveform and link layer message of device output signal processed are measured in real time, and detection data passes through Ethernet interface It uploads；It is inserted into optic module after PROFIBUSDP repeater module, realizes electric signal to the conversion between optical signal, Zhi Houtong Optical fiber interface connection fiber optic cable is crossed, each optic module includes to send signal and receive signal, for receiving the light of signal Intensity is measured in real time, and be will test result and uploaded by the same Ethernet interface；The output signal of optic module connects Enter the optic module of another group of optoelectronic coupling system, again passes by the conversion of optical signal to electric signal later, transmitted by data Backboard is transferred to the PROFIBUSDP repeater module with group；After controlled device is sequentially connected, access PROFIBUSDP relaying Device module interface；For the PROFIBUSDP electric signal of controlled device and the communication quality of optical signal, also it is measured in real time, Detection data is uploaded by Ethernet interface.

7. PROFIBUS optoelectronic coupling system according to claim 6, it is characterised in that: utilize interchanger by multiple ether Network interface is uniformly accessed into Central Control Room, connects PC machine, each group photoelectric coupling module is accessed by IP address, to check all websites Communications status and signal quality.

8. PROFIBUS optoelectronic coupling system according to claim 7, it is characterised in that: the 24V direct-current dual power, two A power interface is separately connected system power supply and independent current source.