CN107241392A - A kind of special monitoring system of frequency converter based on 4G mobile Internets - Google Patents
A kind of special monitoring system of frequency converter based on 4G mobile Internets Download PDFInfo
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- CN107241392A CN107241392A CN201710365235.4A CN201710365235A CN107241392A CN 107241392 A CN107241392 A CN 107241392A CN 201710365235 A CN201710365235 A CN 201710365235A CN 107241392 A CN107241392 A CN 107241392A
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- frequency converter
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- monitoring system
- intelligent gateway
- communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40228—Modbus
Abstract
The invention discloses a kind of special monitoring system of the frequency converter based on 4G mobile Internets；The system includes frequency converter, intelligent gateway, server, Internet Industry service platform and cell-phone customer terminal；The frequency converter is connected with intelligent gateway, realizes data transfer；Data communication is realized using 4G mobile communication technologies between the intelligent gateway and server；The server realizes data communication with Internet Industry service platform；The cell-phone customer terminal realizes data communication with Internet Industry service platform.System that employs 4G mobile communication technologies, with high real-time, remote monitoring and carry out the operation of correlation, more convenient, quick, safety.Secondly, with abundant data-interface, frequency converter can be monitored by laying outer sensor, acquired data are not influenceed in itself by frequency converter；With high reliability and characteristic of low cost.
Description
Technical field
It is especially that a kind of frequency converter based on 4G mobile Internets is special the present invention relates to frequency converter remote monitor supervision area
Monitoring system.
Background technology
Application of frequency converter present situation：Frequency converter is to be transformed to power frequency supply separately using the on-off action of power semiconductor device
The electric energy control device of one frequency, can realize the soft start to AC induction motor, frequency control, improve running accuracy, change
The functions such as power factor, excessively stream/overvoltage/overload protection.
With the development of the technologies such as automation, power electronics, frequency converter saves key equipment as electric machine speed regulation, changes
The given mode that common motor can only be run in constant speed mode so that motor and its dragging are supported on without any change
In the case of so as to reduce motor power consumption, system high efficiency operation can be reached according to manufacturing technique requirent adjustment rotating speed output
Purpose.
Past, converter technique high speed development, product function was constantly expanded during the decade, frequency converter metallurgy, petrochemical industry, cement,
The field such as the modernization such as elevator, printing, electric power industry and medical science, communication, traffic, transport, electronics, environmental protection obtains unprecedented hair
Exhibition and application, almost national economy all trades and professions are all inseparable with frequency converter.
Remote monitoring brief introduction：With gradually stepping up for industrial automation level, frequency converter as a kind of key industry equipment,
Its Centralized Monitoring is already trend of the times, simple artificial inspection work can not in time, quickly handle the event having occurred and that
Barrier.The appearance of centralized monitoring system, the drawbacks of can filling up artificial inspection substantially increases industrial efficiency.Frequency converter
The operation conditions of system directly affects industrial economic interests, and the accurate operating of each production equipment is the core of industrial system
The heart.
Field apparatus and control system real-time communication, by the operational factor real-time Transmission of field apparatus to monitoring system, reach
To the purpose of Centralized Monitoring, it is possible to achieve the maximum economy of production, so, the research and development of production equipment monitoring system are just
Into the popular problem of industrial control field.Meanwhile, the intellectually and automatically horizontality of factory is improved, China can be made
Automation Industry competitiveness is strengthened.Therefore, for the monitoring system research and development of field apparatus, have to industrial production very big
Realistic meaning.
Three basic demands to monitoring system are accuracy, rapidity, reliability.Three basic demands are in particular in
Following aspect：
The selection of monitoring variable：Some key signal amounts can be chosen as Monitoring Data, as to judge equipment state
Characteristic quantity, control analysis calculate needed for amount, the output quantity of equipment normal work, jeopardize equipment normally operation and life safety
Protective number etc..The Rational choice of monitoring variable is to ensure the primary condition that equipment is normally run, excessive unnecessary monitoring variable meeting
Make complex system, cost increase, or even correct identification of the interference to equipment state, monitoring variable very little is then not enough to comprehensively
Reflect equipment working state so that protection imperfection.
The requirement of measurement accuracy and speed：This is relevant with the control effect of whole system.High accuracy and high speed can make
Control response is faster more accurate, but complicates measuring circuit, cost increase.It is general to reach that design requirement is advisable.Communication
The requirement of transmission channel.When using with the monitor mode of host computer-slave computer, data transfer is also required.Different transmission
Mode is as different such as serial, parallel, network, fieldbus transmission speed, for mass data real-time analysis when, transmission speed
An often bottleneck.Also it is exactly the method for antijamming capability, such as using optical fiber transmission, Phototube Coupling, using reliable number
According to method of calibration etc..
Control processor：What the current processor of requirement of control software was commonly used has single-chip microcomputer, DSP, industrial control computer
And CPLD.In general, single-chip microcomputer and with fast response time, in real time code refining, processing, reliability
High advantage.But analyzing and processing and more complicated numerical computations for mass data, are just not so good as industry control in exploitation and programming
Machine is easy, and industrial computer also has the resources such as substantial amounts of peripheral hardware and interface to utilize.And as logical transition and control device,
Biggest advantage is computation capability, makes processing speed faster, is but also not suitable for the numerical computations of complexity.
The requirement of control software：Control software includes system software and various application programs.The relationship between quality of software to control
The quality of effect processed and giving full play to and applying for hardware capability.System software provides the basic ring of application software operation and management
Border, such as WinCE, Linux and embedded OS.And application software is direct control program, it is former that it includes control
Reason and algorithm, the quality of control program and correct control algolithm can bring very big influence to the precision and efficiency of system.Remove
Outside above-mentioned, monitoring system should also have the man-machine interface of close friend, event of failure record, continual reliable power supply
Deng.
At present, found by retrieval, a kind of patent No. CN201410318633.7 change based on internet of disclosure of the invention
Frequency device remote monitoring system, it can complete to install by inserting network communication card on frequency converter, and user completely dispenses with consideration
The installation and setting of server, using B/S patterns, can arbitrarily set the parameter of frequency converter by data terminal and check frequency conversion
The running status of device, realizes the remote monitoring to frequency converter.
A kind of high voltage converter remote monitoring based on internet of patent No. CN201410624135.5 disclosure of the invention
System, including high voltage converter unit, data acquisition unit, control unit, Ethernet interface unit and server unit, it is described
The data transfer of data acquisition unit collection high voltage converter unit is to control unit, described control unit and Ethernet interface list
Member connection, the data pass to server unit, the server after being handled through control unit by Ethernet interface unit
Unit is provided with server software, and accesses internet, and the server software is based on B/S pattern architectures, and client can be by appointing
What can access the terminal of internet, the service data and state of frequency converter unit be checked by browser software, and pass through analysis
History data and trend shift to an earlier date anticipation failure, carry out preventive maintenance.
In addition, also there is following like product：
In recent years, the gradual perfection due to monitoring technology and development, occur so then mutually attending by some new technologies.Prison
The development of control technology is also the process that experienced a gradual change, and simulation monitoring technology takes the lead in occurring, and digital supervision skill then occurs
Art, nowadays occurs in that Network Video Surveillance again.These technologies are increasingly valued by people.What can be do not exaggerated says,
It is one of technology for automatically controlling with being most widely used in safety engineering, and in terms of remote monitoring and communication network
There are highly important application prospect and application value.
Because monitoring technology is wider in the popularization of product for civilian use field, quickly grow, and frequency converter belongs to industrial automation neck
Domain, the field relative closure pursues stability and reliability, and monitoring technology infiltration is relatively slow.But with computer and network
Fast-developing in industrial automation, the remote monitoring system of frequency converter is arisen at the historic moment naturally.
Remote monitoring is carried out to frequency converter to communicate it is necessary to by means of network service, first have to set up with monitored device
Link, data acquisition is come out, by wired or wireless network transmission to monitoring server.
Current frequency converter producer up to several hundred both at home and abroad, single also not lower 50 with regard to high voltage converter, the communication of each family connects
Mouth is different, and communication protocol is also varied, and a monitoring device meets the interface requirements of all producers slowly very much, and this is also
Monitoring technology is caused in the slow reason of frequency converter industry development.
Scheme based on PLC：
The domestic product development for having carried out correlation to the field about company in recent years, is appeared on the market with a few money products at present, but
Generally, the product research in terms of the special monitoring system of frequency converter, development and application is also in the starting stage.In the market
The frequency converter monitoring device of the overwhelming majority is all based on PLC exploitations.
PLC (Programmable Logic Controller, programmable logic controller (PLC)) it using a class it is programmable
Memory, for its internally stored program, the user oriented such as execution logic computing, sequential control, timing, counting and arithmetical operation
Instruction, and pass through numeral or analog pattern input/output control it is various types of machinery or production processes.
PLC is widely used in industrial automation, and possesses abundant industrial control communication interface, stability and reliable
Property is above like product, and be widely used basis.
Scheme based on GPRS：
The frequency converter monitoring device of another domestic producer, is the special monitor supervision platform of first domestic frequency converter, passes through 485
Communication interface is communicated with frequency transformer main control system, the operational factor of frequency converter is obtained, by mobile Internet by data
Pass to server and carry out storage processing.
Existing defects：
Upper section investigation situation shows mainly there are two kinds of monitoring systems on the market at present, general purpose monitor and base based on PLC
In the special converter monitor of GPRS network, but both monitors all exist clearly disadvantageous, and consumers' acceptable degree is not
Height, market application is also limited.
PLC monitoring systems：
Non-dedicated monitoring device：Programmable controller is a microcomputer, and it is to aim at industrial environment application and set
Meter manufacture.With abundant input/output interface, and with stronger driving force.But programmable controller product is simultaneously
The monitoring device of Design of Inverter is not directed to, in practical application, its hardware need to carry out selection and deployment according to actual needs, its is soft
Part need to be designed establishment according to control requirement, and flexibility is poor.
Communication bandwidth is low：Because programmable controller is designed for commercial Application, the communication interface of general industry equipment
Be fieldbus, communication bandwidth is limited, the PLC of in the market typically only carries RS-232, RS-485 or CAN interface, without
The need for method meets big data quantity real-time communication system.
High expensive：Because the core technology that programmable controller is grasps several big automated production business's hands abroad
In, such as Siemens, ABB etc., the country rarely has mature and stable PLC products to be equal to it, therefore domestic price remains high always, with
Exemplified by conventional siemens PLC, single 1 control core will be 1500 yuan, to build a set of monitoring system, in addition it is also necessary to 1
Individual analog module, 1 digital module, 1 communication module, amounting to needs 3000 yuan.Such high cost, user is difficult to
Receive.
The special monitoring systems of GPRS：
Communication bandwidth is low：This product is first domestic frequency converter dedicated monitoring device, is appeared on the market at 12 years or so.3G at that time
Just popular, the stable mobile communications network of main flow is still 2G nets, i.e. GPRS network, so this product employs 2G networks
Communicated with server, and the 2G network bandwidths only have 150kbps, a width of 100Mbps of band of 4G networks, the two difference 700
Times.For current monitoring application, it is necessary to which the Wave data of frequency converter is uploaded in real time, this transmission bandwidth to network is proposed very
High requirement.Therefore this product can not meet the communicating requirement of current big data quantity.
Interface shape is single：This monitoring device and the communication interface of frequency converter only have 485 interfaces, and communication protocol is
ModBus, but simultaneously the frequency converter of not all producer is all the frequency conversion for using this type communication interface, such as Converteam companies
Device just only has Ethernet interface and ProfiBus interfaces, and this results in the limitation of this products application.
The content of the invention
Therefore, in order to solve above-mentioned deficiency, it is special that the present invention provides a kind of frequency converter based on 4G mobile Internets herein
Monitoring system.System that employs 4G mobile communication technologies, with high real-time, remote monitoring and carry out correlation operation,
More convenient, quick, safety.Secondly, with abundant data-interface, frequency converter can be entered by laying outer sensor
Row monitoring, acquired data are not influenceed in itself by frequency converter.Third, with high reliability and low cost.
The present invention is achieved in that a kind of construction special monitoring system of frequency converter based on 4G mobile Internets, and this is
System includes frequency converter, intelligent gateway, server, Internet Industry service platform and cell-phone customer terminal；
The frequency converter is connected with intelligent gateway realizes data transfer；
Data communication is realized using 4G mobile communication technologies between the intelligent gateway and server；
The server realizes data communication with Internet Industry service platform；
The cell-phone customer terminal realizes data communication with Internet Industry service platform.
As the improvement of above-mentioned technical proposal,
A kind of special monitoring system of frequency converter based on 4G mobile Internets, the intelligent gateway takes with remote monitoring
Data communication is realized by wired or wireless way between business device.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, the realization of the system is in control system
Soft display under hardware support, by each frequency converter of low-pressure system by communicating serial ports series connection after, frequency converter and intelligence foremost
Can gateway communication, the various states and operational factor of frequency converter are sent in hardware master control system, display panel is from master control
By the data display of reading in system, master control system also undertakes the alarm of reflection frequency converter and failure in time, and to corresponding report
Alert and failure makes corresponding treatment advice；
Wherein intelligent gateway is used to be communicated with frequency converter, is responsible for data acquisition, protocol conversion, and data transfer work(
Energy；
Server is responsible for the storage of data, arranges, analysis；The operational factor of connected frequency converter can be reflected,
Chart can also be generated to the recent operational factor of frequency converter, to be broken down when the industrial system where frequency converter
When, whether consult is caused by converter parameter mutation；
If warning error or failure occurs in frequency converter, monitoring system can also show failure in time, and provide correspondence failure
Treatment advice, so that operating personnel are accurately positioned frequency converter, and fix a breakdown；If there is significant trouble, to industrial system
Measure is responded in time, to avoid life and property loss.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, it is characterised in that：Intelligent gateway includes；
Power supply module, host CPU chip control module, fieldbus interface module, 4G communication modules, ethernet interface module and
Analog quantity interface module；
The power supply module connects host CPU chip control module by field-bus interface；
The analog quantity interface connects host CPU chip control module by field-bus interface；
The output end of the host CPU chip control module is connected with 4G communication modules, Ethernet interface respectively.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, it is characterised in that：The host CPU core
Piece control module includes master controller, filter circuit and indicator light circuit；Master controller is the microcontroller of STM32F407 chips
Device ARM；Indicator light circuit is directly connected to master controller, and filter circuit is filtered to the power supply of cpu chip control module,
It is connected with its power pin.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, it is characterised in that：The 4G communications mould
Block is ME909s series 4G modules.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, it is characterised in that：The Ethernet connects
Mouth mold block uses hardware TCP/IP protocol stack chips W 5500.
As the improvement of above-mentioned technical proposal,
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, it is characterised in that：The fieldbus
Interface module reserves the communication interface of two-way standard 485, using ADI Magnetic isolation technology, model ADM2587；Fieldbus connects
Mouth also includes power interface, control interface, serial interface, USB interface.
The invention has the advantages that：The special monitoring system of a kind of frequency converter based on 4G mobile Internets of the present invention
System；Have the following advantages that：
1) high real-time：In existing monitoring device, because bandwidth is relatively low, its shortcoming for being difficult to overcome is real-time
Difference.Intelligent gateway is greatly improved as a result of 4G mobile communication technologies, bandwidth, promotes monitoring technology to overcome poor real
Difficulty, has been truly realized the real-time of monitoring system.Thus, the geographic limitations between equipment and people have been broken, can be long-range
The operation of correlation is monitored and carries out, more convenient, quick, safety.
2) abundant data-interface：In existing monitoring device, there was only 485 interfaces with the communication interface of frequency converter, lead to
Letter agreement is ModBus, and the intelligent gateway that we develop has reserved three kinds of Data Detection modes：The first is current flourishing
The EPA interface of development, the frequency converter of current main flow producer is provided with this interface, it is contemplated that EPA meeting
Develop into the industrial communication interface of following main flow.It is for second the field-bus interface of current main-stream, communication protocol is
ModBus, current overwhelming majority producers all possess this interface.The third is independently of the analog quantity outside monitored frequency converter
Collection, if above two interface does not possess, or communication protocol is unknown, and we can be by laying outer sensor, to becoming
Frequency device is monitored, and acquired data are not influenceed in itself by frequency converter.
3) high reliability：The monitoring product applied as a industry spot, its role is to monitor the operation of frequency converter
State and failure situation, monitoring device can not report failure by mistake because of problem itself, and this just proposes very high to its reliability
It is required that.In order to realize high reliability, carried out except being produced in strict accordance with production technology, to used component strict
Check on, beyond operator training correctly operates with and safeguard, from technological layer, sufficiently effective Reliability Measures are must
Need.Such as control power supply redundancy, electromagnetic Compatibility Design, environmental suitability design etc..
4) it is inexpensive：User receives caused by cost performance and high cost due to just considering monitoring product at the beginning of design
Degree problem, the intelligent gateway that we develop is positioned in equipment, and the production link of winning the championship such as during which type selecting processing all has to cost
Effect control.Final products dispatch from the factory cost below thousand yuan, far below the monitoring device based on PLC.
Brief description of the drawings
Fig. 1 is entire block diagram of the present invention
Fig. 2 is that the principle of intelligent gateway of the present invention constitutes schematic diagram；
Fig. 3 is the master controller schematic diagram of intelligent gateway of the present invention；
Fig. 4 is the 4G communication module schematic diagrames of intelligent gateway of the present invention；
Fig. 5 is the Ethernet interface diagram of intelligent gateway of the present invention；
Fig. 6 is the field-bus interface schematic diagram of intelligent gateway of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1- Fig. 6, the present invention is described in detail, and the technical scheme in the embodiment of the present invention is entered
Row is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole realities
Apply example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the scope of protection of the invention.
The present invention is for the deficiency of existing two kinds monitoring products, and by improving, offer herein is a kind of to be based on 4G mobile interchanges
The special monitoring system of frequency converter of net；And a variety of frequency converter communication interfaces are reserved, meet the interface requirement of all producer's frequency converters.
As illustrated, can be practiced as follows；
The system includes；Frequency converter 10, intelligent gateway 20, server 30, Internet Industry service platform 40 and mobile phone
Client 50；
The frequency converter 10 is connected with intelligent gateway 20, realizes data transfer；
Data communication is realized using 4G mobile communication technologies between the intelligent gateway 20 and server 30；
The server 30 realizes data communication with Internet Industry service platform 40；
The cell-phone customer terminal 50 realizes data communication with Internet Industry service platform 40.
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, the intelligent gateway 20 and remote monitoring
Data communication is realized by wired or wireless way between server 30.
The special monitoring system of a kind of frequency converter based on 4G mobile Internets, the realization of the system is in control system
Soft display under hardware support, by each frequency converter of low-pressure system by communicating serial ports series connection after, frequency converter and intelligence foremost
Can gateway communication, the various states and operational factor of frequency converter are sent in hardware master control system, display panel is from master control
By the data display of reading in system, master control system also undertakes the alarm of reflection frequency converter and failure in time, and to corresponding report
Alert and failure makes corresponding treatment advice.
Wherein intelligent gateway is used to be communicated with frequency converter, is responsible for data acquisition, protocol conversion, and data transfer work(
Energy.
Server is responsible for the storage of data, arranges, analysis；The operational factor of connected frequency converter can be reflected,
Chart can also be generated to the recent operational factor of frequency converter, to be broken down when the industrial system where frequency converter
When, whether consult is caused by converter parameter mutation.
If warning error or failure occurs in frequency converter, monitoring system can also show failure in time, and provide correspondence failure
Treatment advice, so that operating personnel are accurately positioned frequency converter, and fix a breakdown；If there is significant trouble, to industrial system
Measure is responded in time, to avoid life and property loss.
During implementation, intelligent gateway includes；Power supply module, host CPU chip control module, fieldbus interface module,
4G communication modules, ethernet interface module and analog quantity interface module；
The power supply module connects host CPU chip control module by field-bus interface；
The analog quantity interface connects host CPU chip control module by field-bus interface；
The output end of the host CPU chip control module is connected with 4G communication modules, Ethernet interface respectively.
The special monitoring system of a kind of frequency converter based on 4G mobile Internets of the present invention, the host CPU chip controls
Module includes master controller, filter circuit and indicator light circuit；Indicator light circuit is directly connected to master controller, and filter circuit is
Power supply to cpu chip control module is filtered, and is connected with its power pin.
Master controller is the microcontroller ARM, the STM32F407 of model STMicw Electronics of current main flow.It is based on
CortexTM- M4 is kernel high-performance microcontroller, and STM32F4 Series of MCU is integrated with monocycle DSP instructions and FPU
(floatingpoint unit, floating point unit), improves computing capability, can carry out some complicated calculating and control.
The special monitoring system of a kind of frequency converter based on 4G mobile Internets of the present invention, the 4G communication modules are
ME909s series 4G modules.Chip platform is thought in the integrated Huawei sea of ME909s series 4G modules, and the series module is compatible complete at present
The 4G network frequency ranges of ball overwhelming majority radio communication operator, are first global Cat4LTE industrial modules.
The special monitoring system of a kind of frequency converter based on 4G mobile Internets of the present invention, the ethernet interface module
Using hardware TCP/IP protocol stack chips W 5500.This Ethernet chip supports the agreements such as TCP, UDP, ICMP, and CPU side is logical
With synchronous serial interface (SPI).
The special monitoring system of a kind of frequency converter based on 4G mobile Internets of the present invention, the field-bus interface mould
Block reserves the communication interface of two-way standard 485, using ADI Magnetic isolation technology, model ADM2587；Field-bus interface is also wrapped
Include power interface, control interface, serial interface, USB interface.
Can the success or not of one system development is dependent firstly on it correctly realize predetermined target and function, secondly
There is sufficient condition to ensure the future development of system, therefore, have followed following principle in the conceptual design of the system：
The advance of technology：Same function is realized, is either still had on hardware device in software systems
The selection of different levels, not only can guarantee that good performance using relatively advanced technology, and be easy to system in future enter one
Step development.
It is flexibly open：One system is wanted to realize the resource-sharing with other systems, adapts to different network environments,
Good adaptability is kept in following application, it is necessary to have flexible networking structure and open network savvy.
Economic and practical：As far as possible using ripe advanced technology, selection cost performance high scheme and equipment reduce maintenance expense
With.
Transmission diversity：As far as possible multiple choices are provided in the design of system communication mode.The communication of general sexual openness
Agreement and standard data rate, by the parameter setting of different software, realize different functions.Real-time responsiveness：In order to
The target of monitoring is reached, system must carry out real-time response to the abnormal information of generation, and alarmed and automatically processed.
Scalability：Intelligent gateway uses modularized design, system extension, upgrading is changed existing device shape
State.
System explanation：
The realization of frequency converter monitoring system is the soft display under control system hardware support, by each frequency conversion of low-pressure system
After device is by communicating serial ports series connection, frequency converter and control system hardware communication foremost, by the various states of frequency converter and
Operational factor is sent in hardware master control system, and display panel is by the data display of reading from master control system, and master control system is also
The alarm of reflection frequency converter and failure in time are undertaken, and corresponding treatment advice is made to corresponding alarm and failure.
Overall monitoring system includes three levels, is intelligent gateway (communication Protocol Conversion module), cloud respectively from down to up
Hold server, cell-phone customer terminal.Wherein intelligent gateway is the key equipment in whole system, is communicated with frequency converter, is responsible for
Data acquisition, protocol conversion, and data-transformation facility.
Cloud server is responsible for the storage of data, arranges, analysis.The operation ginseng of connected frequency converter can be reflected
Number, additionally it is possible to which operational factor recent to frequency converter generates chart, to there is event when the industrial system where frequency converter
Whether during barrier, consult is caused by converter parameter mutation.
If warning error or failure occurs in frequency converter, monitoring system can also show failure in time, and provide correspondence failure
Treatment advice, so that operating personnel are accurately positioned frequency converter, and fix a breakdown；If there is significant trouble, to industrial system
Measure is responded in time, to avoid life and property loss.
Technical advantage is as follows：
1) high real-time：In existing monitoring device, because bandwidth is relatively low, its shortcoming for being difficult to overcome is real-time
Difference.Intelligent gateway is greatly improved as a result of 4G mobile communication technologies, bandwidth, promotes monitoring technology to overcome poor real
Difficulty, has been truly realized the real-time of monitoring system.Thus, the geographic limitations between equipment and people have been broken, can be long-range
The operation of correlation is monitored and carries out, more convenient, quick, safety.
2) abundant data-interface：In existing monitoring device, there was only 485 interfaces with the communication interface of frequency converter, lead to
Letter agreement is ModBus, and the intelligent gateway that we develop has reserved three kinds of Data Detection modes：The first is current flourishing
The EPA interface of development, the frequency converter of current main flow producer is provided with this interface, it is contemplated that EPA meeting
Develop into the industrial communication interface of following main flow.It is for second the field-bus interface of current main-stream, communication protocol is
ModBus, current overwhelming majority producers all possess this interface.The third is independently of the analog quantity outside monitored frequency converter
Collection, if above two interface does not possess, or communication protocol is unknown, and we can be by laying outer sensor, to becoming
Frequency device is monitored, and acquired data are not influenceed in itself by frequency converter.
3) high reliability：The monitoring product applied as a industry spot, its role is to monitor the operation of frequency converter
State and failure situation, monitoring device can not report failure by mistake because of problem itself, and this just proposes very high to its reliability
It is required that.In order to realize high reliability, carried out except being produced in strict accordance with production technology, to used component strict
Check on, beyond operator training correctly operates with and safeguard, from technological layer, sufficiently effective Reliability Measures are must
Need.Such as control power supply redundancy, electromagnetic Compatibility Design, environmental suitability design etc..
4) it is inexpensive：User receives caused by cost performance and high cost due to just considering monitoring product at the beginning of design
Degree problem, the intelligent gateway that we develop is positioned in equipment, and the production link of winning the championship such as during which type selecting processing all has to cost
Effect control.Final products dispatch from the factory cost below thousand yuan, far below the monitoring device based on PLC.
Analysis of cases：Intelligent gateway monitoring device of the present invention applies case on power plant dedusting fan frequency converter
Example.
Project Introduction：The intelligent gateway monitoring device of the present invention connects the phase of Zhuanghe power plant one in state's TV university and follows pump frequency conversion device
On come into operation, 8 equipment are equipped altogether, every equipment installs one, and frequency converter producer includes Li Dehuafu, close Kang Yisheng with
And Luo Binkang high-voltage cascade frequency converter.
It is national " 15 " latter stage major project that state's TV university, which connects Zhuanghe power plant first stage of the project, builds two 600MW
Supercritical coal-fired units, the dedusting of synchronized construction high efficiency electrostatic and the full desulfurizer of flue gas, cooling water use once-though cooling, pot
Stove make-up water is provided by desalinization, and South Liaoning Dalian power network can be accessed with twice 500 kilovoltage grade circuits by generating electricity.
8, the factory follows pump frequency conversion device and belongs to generating set key equipment, and the intelligent gateway of my company is installed in June, 2015
Monitoring device, has run nearly two year, multiple source of early warning failure is that equipment is safeguarded in advance, it is to avoid great peace so far
Full accident provides valuable data and supported, obtains significantly effect.
Application effect：
Early stage power plant frequency converter monitor mode is with manual inspection, based on record of filling in a form by hand, coordinates ipc monitor hand
Section, but host computer only has IO amount data, and the variable of monitoring is very limited, it is impossible to carry out comprehensive diagnostic to frequency converter.
After frequency converter remote monitoring system of reaching the standard grade, the state for following the operation of pump frequency conversion device can be shown in real time, is operation maintenance personnel
Related data statistics and analysis is provided with administrative decision personnel, so operation maintenance personnel could be facilitated to be safeguarded and decision-making, is improved
The O＆M efficiency of decision-making.There is provided the market economy benefit in power plant by personnel and equipment cost in terms of reduction O＆M.
Data statistics：The monitoring system puts into operation nearly two year, alert event 6 times, event of failure 2 times, pre- diagnostic event 3
It is secondary.
| Event type | Alert event | Event of failure | Pre- diagnostic event |
| Number of times | 6 times | 2 times | 3 times |
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
1. a kind of special monitoring system of frequency converter based on 4G mobile Internets, it is characterised in that：The system includes frequency converter
(10), intelligent gateway (20), server (30), Internet Industry service platform (40) and cell-phone customer terminal (50)；
The frequency converter (10) is connected with intelligent gateway (20) realizes data transfer；
Data communication is realized using 4G mobile communication technologies between the intelligent gateway (20) and server (30)；
The server (30) realizes data communication with Internet Industry service platform (40)；
The cell-phone customer terminal (50) realizes data communication with Internet Industry service platform (40).
2. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 1, it is characterised in that：Institute
State and data communication is realized by wired or wireless way between intelligent gateway (20) and remote monitoring server (30).
3. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 1, it is characterised in that：Should
The realization of system is the soft display under control system hardware support, and each frequency converter of low-pressure system is connected by communicating serial ports
Afterwards, frequency converter is communicated with intelligent gateway (20) foremost, and the various states and operational factor of frequency converter are sent into hardware
In master control system, display panel is by the data display of reading from master control system, and master control system also undertakes reflection frequency converter in time
Alarm and failure, he and corresponding treatment advice is made to corresponding alarm and failure；
Wherein intelligent gateway is used to be communicated with frequency converter, is responsible for data acquisition, protocol conversion, and data-transformation facility；
Server is responsible for the storage of data, arranges, analysis；The operational factor of connected frequency converter can be reflected, moreover it is possible to
It is enough that chart is generated to the recent operational factor of frequency converter, when the industrial system where frequency converter breaks down, to look into
Whether read is caused by converter parameter mutation；
If warning error or failure occurs in frequency converter, monitoring system can also show failure in time, and provide the place of correspondence failure
Reason suggestion, so that operating personnel are accurately positioned frequency converter, and fixes a breakdown；It is timely to industrial system if there is significant trouble
Measure is responded, to avoid life and property loss.
4. a kind of special monitoring system of frequency converter based on 4G mobile Internets according to claim 1 or claim 2, its feature exists
In：Intelligent gateway (20) includes；Power supply module, host CPU chip control module, fieldbus interface module, 4G communication moulds
Block, ethernet interface module and analog quantity interface module；
The power supply module connects host CPU chip control module by field-bus interface；
The analog quantity interface connects host CPU chip control module by field-bus interface；
The output end of the host CPU chip control module is connected with 4G communication modules, ethernet interface module respectively.
5. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 4, it is characterised in that：Institute
Stating host CPU chip control module includes master controller, filter circuit and indicator light circuit；Master controller is STM32F407 chips
Microcontroller ARM；Indicator light circuit is directly connected to master controller, and filter circuit is the power supply to cpu chip control module
It is filtered, is connected with its power pin.
6. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 4, it is characterised in that：Institute
4G communication modules are stated for ME909s series 4G modules.
7. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 4, it is characterised in that：Institute
Ethernet interface module is stated using hardware TCP/IP protocol stack chips W 5500.
8. the special monitoring system of a kind of frequency converter based on 4G mobile Internets according to claim 4, it is characterised in that：Institute
State fieldbus interface module and reserve the communication interface of two-way standard 485, using ADI Magnetic isolation technology, model ADM2587；
Field-bus interface also includes power interface, control interface, serial interface and USB interface.
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| CN110221552A (en) * | 2018-03-01 | 2019-09-10 | 上海九物科技有限公司 | A kind of frequency-converter device and its control method of the transmission of long distance wireless data |
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