CN107995176A - A kind of SCADA system picture caching system - Google Patents

A kind of SCADA system picture caching system Download PDF

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Publication number
CN107995176A
CN107995176A CN201711203883.6A CN201711203883A CN107995176A CN 107995176 A CN107995176 A CN 107995176A CN 201711203883 A CN201711203883 A CN 201711203883A CN 107995176 A CN107995176 A CN 107995176A
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picture
client
data
module
server end
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CN107995176B (en
Inventor
王志心
刘华辉
颜儒彬
李佑文
褚红健
杨小伟
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Nanjing Guodian Nanzi Railway Traffic Engineering Co Ltd
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Nanjing Guodian Nanzi Railway Traffic Engineering Co Ltd
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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
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/561—Adding application-functional data or data for application control, e.g. adding metadata
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
    • G06F16/73—Querying
    • 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
    • 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
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
    • 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
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Library & Information Science (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a kind of SCADA system picture caching system, system includes servers' data enquiry module, server end cache module, server end buffer update module, client-cache module, server end picture processing main program module, the several parts of client picture processing module.In practical business system, dispatcher passes through in client HMI Selection and call pictures, the data of matching needs will be searched first in client-cache module and server cache module, when it is data cached exist and it is available when, the data cached stand-by period for achieving the purpose that quick calling picture, reducing picture calling can be used directly in client HMI.

Description

A kind of SCADA system picture caching system
Technical field
The present invention relates to the picture caching system in SCADA system field, more particularly to a kind of SCADA system.
Background technology
SCADA system, i.e. data acquisition and supervisor control, are widely used in electric power, metallurgy, oil, chemical industry, combustion The data acquisition in the fields such as gas, railway is with monitoring the numerous areas such as control.
Wherein, pith of the real-time pictures module as SCADA system, for monitoring the operation shape of operation system in real time Condition.In SCADA system, the content of real-time pictures matches somebody with somebody to postpone by configuration instrument to be stored in background data base, configures content Two parts are bound including primitive information and data.
Under normal circumstances, SCADA dispatcher is by showing completely in client HMI Selection and calls picture to picture in HMI, It is whole to call processing procedure：1) client receives user's operation and sends requested picture Id to background server end picture Processing routine；2) server end picture processing routine obtains picture configuration file from real-time database by data-interface and parses；3) Server end picture processing routine reads the instantaneous value of data object bound in picture by data-interface from real-time database；4) take Business end picture processing routine sends picture configuration information and real time data to client picture processing module；5) client is drawn Surface treatment module creates pel according to picture configuration information and renders generation painting canvas, and is shown in picture window；6) client Picture processing module is held to update picture pel according to picture real time data.
To ensure the real-time of operation system, every profession and trade has strict requirements to the allocating time of picture.But in reality In, continuous with operation system complicates, and the pel and data message included in individual picture is more and more, significantly Add image content parsing, obtain picture real time data and painting canvas render time；On the other hand, with the stream of B/S frameworks OK, compared to C/S frameworks, the executing efficiency under web environment substantially reduces.Due to both sides reason, in practical applications, Picture allocating time cannot often reach the requirement of authority file.
The content of the invention
The problem of for these two aspects in the prior art, the invention discloses a kind of SCADA system picture caching system, energy The picture for enough greatly speeding up SCADA system (the particularly SCADA system of B/S frameworks) calls speed.
In order to realize foregoing invention purpose, the technical solution adopted by the present invention is：A kind of SCADA system picture caching system System, it is characterised in that：Comprising servers' data enquiry module, server end cache module, server end buffer update module, Client-cache module, server end picture processing main program module, the several parts of client picture processing module.
The server data enquiry module, is used for realization the query processing of picture data, including：According to picture Id from Picture configuration information is obtained in real-time database；Configuration is verified using checking algorithm and generates picture check code；From real-time database The instantaneous value for all data objects bound in middle acquisition image information, as picture real time data.
The server end cache module is resident in the server, which is used to store picture in server background Face information, each picture storage information include：Picture Id；Picture configuration information；Picture check code；Picture real time data.
The server end buffer update module, the number for screen objects in real-time update server end cache module According to.Specifically：Monitor the real-time change of data object bound in image information in real time, when each data variation will be newest real-time Value is updated to server end cache module；The configuration modification of real-time monitoring users, when any picture in server end cache module During generation configuration modification, by server data enquiry module obtain the newest configuration information of the picture, picture check code and Picture real time data, and it is updated to server end cache module.
The server end picture processing main program module is resident in the server, is led to client picture processing module Letter connection, is used for realization：Receive the picture request from client；According to required parameter tissue returned data；Send and return to number According to client picture processing module.
The client picture processing module is deployed in SCADA system client, with the main journey of server end picture processing Sequence module communicates to connect, and is used for realization：Receive user's picture call request；Send picture call request；Server is received to return Data；Picture dissection process, parses picture configuration information and creates and render painting canvas, parses picture real time data and updates painting canvas Middle pel state, and relevant information is added in client-cache module；Picture exhibition, client picture processing module include One picture exhibition window is used to accommodate the picture after display renders, which is only able to display a secondary painting canvas every time.
The client-cache module is resided in client's end memory, in client stored picture information, this to be slow Storing module only comes into force active client.Each picture storage information includes：Picture Id；Picture check code；Painting canvas, painting canvas is by institute The client picture processing module stated parses picture configuration information and creates and renders.
Based on above-mentioned SCADA system picture caching system, SCADA dispatcher in client HMI by calling picture to arrive Picture is shown completely in HMI, entirely calls processing procedure：
S10：Client picture processing module receives user's picture call request, and extracts the picture Id of request；
S20：Corresponding image information is inquired about in client-cache module according to the screen objects Id of request, and from finding Image information in extract frame out check code, using picture check code and picture Id as required parameter；When client-cache mould When can not find image information in block, only using picture Id as required parameter；
S30：Client picture processing module sends required parameter to server end picture and handles main program；
S40：Server end picture processing main program parsing extraction required parameter, according to picture Id in required parameter from service Inquiry obtains corresponding image information in the cache module of device end, if in the cache module there are corresponding storage if continue to execute S501；Optionally, S502 is continued to execute if corresponding storage information is not present in the cache module；
S501：Corresponding image information is obtained from server end cache module.And therefrom extracted according to required parameter must Data are wanted to be back to server end picture processing main program；
S502：Image information is obtained by server data enquiry module, and image information is preserved to server end and is delayed Storing module, necessary data is then therefrom extracted according to required parameter and is back to server end picture processing main program；
Further, step S501, the data extraction process process described in S502：If verified in required parameter comprising picture Code, then extract the picture check code included in image information and be compared therewith, if comparing unanimously, only extract in image information Picture real time data；If comparing in inconsistent or required parameter and not including picture check code, extract in image information draw at the same time Face configuration information, picture check code, picture real time data.
S60：Server end picture processing main program return information is sent to client picture processing module；
S70：The data message that client picture processing module resolution server end returns, if only including picture in returned data Face real time data, then continue to execute S801；Optionally, if in returned data at the same time comprising picture configuration information, picture check code, Picture real time data, then continue to execute S802；
S801：Canvas object is extracted in the image information found from step S20, and the painting canvas is replaced to picture exhibition Shown in window, the picture real time data then parsed according to step S70 updates the pel state in painting canvas；
S802：Create according to the step S70 picture configuration informations parsed and render new painting canvas, and by the painting canvas replace to Shown in picture exhibition window, and picture Id, picture check code, the corresponding addition of one caching of painting canvas composition newly created will be asked Into client-cache module, the picture real time data finally parsed according to step S70 updates the pel state in painting canvas.
Beneficial effects of the present invention：
A kind of beneficial effect of SCADA system picture caching system：The invention added in picture system client and Server end cache module, and devise the data that buffer update module is used for real-time update server end cache module.In reality In the operation system of border, dispatcher, will be first in client-cache module and service by client HMI Selection and call pictures The data that matching needs are searched in device cache module, when it is data cached exist and it is available when, client HMI can be used directly slow Deposit data achievees the purpose that quick calling picture, reduces the stand-by period that picture calls.Meanwhile server end picture module preserves In server memory, it can be called at the same time by multiple client picture request, reach and once cached, calling is repeated several times Purpose, greatly reduces the occupancy of memory headroom.
Brief description of the drawings
Fig. 1 is the system construction drawing of the present invention.
Fig. 2 is a kind of exemplary block diagram of the server end cache module of the present invention.
Fig. 3 is a kind of exemplary block diagram of the client-cache module of the present invention.
Fig. 4 is the picture call flow chart based on caching system of the present invention.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer The present invention is described in further detail.
Fig. 1 is the system construction drawing of the present invention, according to Fig. 1, the picture caching system of the SCADA system of the present embodiment Two parts of client and server can be divided into.
Wherein server section includes：
Server data enquiry module, is used for realization the query processing of picture data, including：According to picture Id from real-time database Middle acquisition picture configuration information；Configuration is verified using checking algorithm and generates picture check code；Obtained from real-time database The instantaneous value for all data objects bound in image information, as picture real time data.
Server end cache module, for including in server background stored picture information, each picture storage information：Draw Face Id；Picture configuration information；Picture check code；Picture real time data.
Server end buffer update module, the data for screen objects in real-time update server end cache module.Tool Body：Monitor the real-time change of data object bound in image information in real time, during each data variation by newest instantaneous value more Newly to server end cache module；The configuration modification of real-time monitoring users, when any picture occurs in server end cache module During configuration modification, the newest configuration information of the picture, picture check code and picture are obtained by server data enquiry module Real time data, and it is updated to server end cache module.
Server end picture handles main program module, communicates to connect, is used for realization with client picture processing module：Receive Picture request from client；According to required parameter tissue returned data；Transmission returns data into client picture processing mould Block.
Client part includes：
Client picture processing module, is used for：Receive user's picture call request；Send picture call request；Receive clothes Business device returned data；Picture dissection process, parses picture configuration information and creates and render painting canvas, and parsing picture real time data is simultaneously Pel state in painting canvas is updated, and relevant information is added in client-cache module；Picture exhibition, the processing of client picture Module includes a picture exhibition window and is used to accommodate the picture after display renders, which is only able to display a pair and draws every time Cloth.
Client-cache module, for only coming into force in client stored picture information, the cache module to active client. Each picture storage information includes：Picture Id；Picture check code；Painting canvas, painting canvas is by the client picture processing module solution Analyse picture configuration information and create and render.
Fig. 2 is a kind of exemplary block diagram of the server end cache module of the present invention.In structure chart described in Fig. 2, caching Two parts of SchematicIdList and SchematicInfoMap are included in structure.Wherein SchematicIdList is one Array, the Id of the screen objects stored for storing cache module, the order of element represents that each cache object adds in array It is added to the sequencing of cache module, and the object number that can have been cached by the length of array； SchematicInfoMap is a Hash object, and for preserving picture check code SchematicMD5Code, picture matches somebody with somebody confidence Cease SchematicContent and picture real time data SchematicData.
Based on the exemplary plot, the screen objects processing procedure specified is searched in server buffer module：
S101：Corresponding storage information can directly be searched in SchematicInfoMap by picture Id, if in the presence of The information is then directly returned, otherwise returns and is not present.
On the other hand, new picture cache object is added to server end cache module processing procedure：
S201：Existing corresponding screen objects are searched whether from SchematicInfoMap according to picture Id, if in the presence of, The picture Id specified is deleted from SchematicIdList arrays and the caching found is deleted from SchematicInfoMap Screen objects；
S202：Picture Id to be added is added to SchematicIdList arrays from afterbody, by picture pair to be added As being saved in SchematicInfoMap objects；
S203：The length of SchematicIdList arrays is checked, when the length of SchematicIdList arrays exceedes limit Definite value, a picture Id is deleted from SchematicIdList arrays head, and the picture is deleted from SchematicInfoMap The corresponding caching screen objects of Id.
Fig. 3 is a kind of exemplary block diagram of the client-cache module of the present invention.In structure chart described in Fig. 3, caching knot Two parts of SchematicIdList and SchematicInfoMap are included in structure.Wherein SchematicIdList is a number Group, the Id of the screen objects stored for storing cache module, the order of element represents each cache object addition in array To the sequencing of cache module, and the object number that can have been cached by the length of array； SchematicInfoMap is a Hash object, for preserving picture check code SchematicMD5Code and canvas object DrawCompenent。
Based on the exemplary plot, the query processing process of client-cache module, the addition processing procedure of new cache object are all Identical with above-mentioned server buffer module corresponding operating processing procedure, which is not described herein again.
Fig. 4 is the picture call flow chart based on caching system of the present invention, and according to Fig. 4, picture calls processing procedure Start from step S301, end at step S319, specifically：
S302：Client picture call request is received, and obtains the picture Id of request, continues to execute step S303；
S303：The corresponding cache objects of search request picture Id in client-cache module, if in the presence of continuing to execute step Rapid S304, if being not present, jumps to and performs step S305；
S304：Picture check code in cache object is extracted, using picture check code and picture Id as required parameter, continues to hold Row step S306；
S305：Using picture Id as required parameter, step S306 is continued to execute；
S306：Client picture processing module sends required parameter to server end picture and handles main program, continues to execute Step S307；
S307：Server end picture processing main program parsing extraction required parameter, continues to execute step S308；
S308：The corresponding cache objects of search request picture Id in server end cache module, if in the presence of continuing to execute Step S309, if being not present, jumps to and performs step S310；
S309：Server end caching image information is obtained, continues to execute step S312；
S310：Send picture Id and obtain image information to server data enquiry module, continue to execute step S311；
S311：The image information obtained is preserved to preserving to server end cache module, continues to execute step S312；
S312：Perform " returned data sub-process is extracted from image information " and obtain returned data, continue to execute step S313；
S313：Server end picture processing main program sends returned data to client picture processing module, continues to hold Row step S314；
S314：Judge whether only include picture real time data in returned data, if only including picture real time data, continue to hold Row step S315, on the contrary jump to and perform step S316；
S315：Canvas object is extracted in the image information found from step S303, and the painting canvas is replaced to picture exhibition Show in window and show, continue to execute step S318；
S316：Picture configuration information creates and renders new painting canvas in the returned data of parsing, and by the painting canvas replace to Shown in picture exhibition window, continue to execute step S317；
S317：The new canvas object that picture Id, picture check code and step S316 are created in returned data is added to In client-cache module, step S318 is continued to execute；
S318：Parse the pel state of the picture real time data renewal current painting canvas of picture exhibition window in returned data.
" returned data sub-process is extracted from image information " performed by above-mentioned steps S312, the sub-process processing procedure Start from step S401, end at step S407, specifically：
S402：Judge whether include picture check code in the received required parameter of server end, if being walked comprising continuing to execute Rapid S403, if not including, jumps to and performs step S405；
S403：Picture check code is extracted from image information and is compared with the picture check code of request, if comparing phase Together, step S404 is continued to execute, if differing, jumps to and performs step S405；
S404：Extract picture real time data in image information and, as returned data, continue to execute step S406；
S405：Picture configuration information, picture check code, picture real time data are extracted in image information as returned data, Continue to execute step S406；
S406：Returned data is sent to server end picture and handles main program.
It these are only the technological thought of the explanation present invention, it is impossible to protection scope of the present invention is limited with this, it is every according to this The technological thought proposed is invented, any change done on the basis of technical solution, each falls within the scope of the present invention.This Inventing the technology being not directed to can be realized by existing technology.

Claims (5)

  1. A kind of 1. SCADA system picture caching system, it is characterised in that：Include servers' data enquiry module, server end Cache module, server end buffer update module, client-cache module, server end picture processing main program module, client Hold picture processing module；
    The server data enquiry module, is used for realization the query processing of picture data, including：According to picture Id from real-time database Middle acquisition picture configuration information；Configuration is verified using checking algorithm and generates picture check code；Obtained from real-time database The instantaneous value for all data objects bound in image information, as picture real time data；
    The server end cache module is resident in the server, which is used to believe in server background stored picture Breath；
    The server end buffer update module, for the data of screen objects in real-time update server end cache module, tool Body：Monitor the real-time change of data object bound in image information in real time, during each data variation by newest instantaneous value more Newly to server end cache module；The configuration modification of real-time monitoring users, when any picture occurs in server end cache module During configuration modification, the newest configuration information of the picture, picture check code and picture are obtained by server data enquiry module Real time data, and it is updated to server end cache module；
    The server end picture processing main program module is resident in the server, with client picture processing module communication link Connect, be used for realization：Receive the picture request from client；According to required parameter tissue returned data；Transmission returns data into Client picture processing module；
    The client picture processing module is deployed in SCADA system client, and main program module is handled with server end picture Communication connection, is used for realization：Receive user's picture call request；Send picture call request；Receive server returned data；Draw Face dissection process, parses picture configuration information and creates and render painting canvas, parses picture real time data and updates pel in painting canvas State, and relevant information is added in client-cache module；Picture exhibition, client picture processing module include a picture Face impression window is used to accommodate the picture after display renders, which is only able to display a secondary painting canvas every time；
    The client-cache module is resided in client's end memory, in client stored picture information, the cache module Only come into force to active client.
  2. 2. SCADA system picture caching system according to claim 1, it is characterised in that：
    Each picture storage information includes in the server end cache module：Picture Id；Picture configuration information；Picture verifies Code；Picture real time data.
  3. 3. SCADA system picture caching system according to claim 1, it is characterised in that：
    Each picture storage information includes in the client-cache module：Picture Id；Picture check code；Painting canvas, painting canvas is by institute The client picture processing module stated parses picture configuration information and creates and renders.
  4. 4. picture calls methods of exhibiting in a kind of SCADA system picture caching system, it is characterised in that：
    S10：Client picture processing module receives user's picture call request, and extracts the picture Id of request；
    S20：Corresponding image information is inquired about in client-cache module according to the screen objects Id of request, and from the picture found Frame out check code is extracted in the information of face, using picture check code and picture Id as required parameter；When in client-cache module When can not find image information, only using picture Id as required parameter；
    S30：Client picture processing module sends required parameter to server end picture and handles main program；
    S40：Server end picture processing main program parsing extraction required parameter, according to picture Id in required parameter from server end Inquiry obtains corresponding image information in cache module, if in the cache module there are corresponding storage if continue to execute
    S501；Optionally, S502 is continued to execute if corresponding storage information is not present in the cache module；
    S501：Corresponding image information is obtained from server end cache module, and necessary number is therefrom extracted according to required parameter Main program is handled according to server end picture is back to；
    S502：Image information is obtained by server data enquiry module, and image information is preserved to server end and caches mould Block, necessary data is then therefrom extracted according to required parameter and is back to server end picture processing main program；
    S60：Server end picture processing main program return information is sent to client picture processing module；
    S70：The data message that client picture processing module resolution server end returns, if only real comprising picture in returned data When data, then continue to execute S801；Optionally, if at the same time comprising picture configuration information, picture check code, picture in returned data Real time data, then continue to execute S802；
    S801：Canvas object is extracted in the image information found from step S20, and the painting canvas is replaced to picture exhibition window Middle displaying, the picture real time data then parsed according to step S70 update the pel state in painting canvas；
    S802：Created according to the step S70 picture configuration informations parsed and render new painting canvas, and the painting canvas is replaced to picture Shown in impression window, and picture Id, picture check code, the painting canvas that newly creates will be asked to form a caching correspondence and be added to visitor In the cache module of family end, the picture real time data finally parsed according to step S70 updates the pel state in painting canvas.
  5. 5. picture calls methods of exhibiting in SCADA system picture caching system according to claim 4, it is characterised in that：
    Step S501, the data extraction process process described in S502：If including picture check code in required parameter, picture is extracted The picture check code included in the information of face is compared therewith, if comparing unanimously, only extracts picture in image information and counts in real time According to；If compare inconsistent or required parameter in do not include picture check code, while extract picture configuration information in image information, Picture check code, picture real time data.
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JP2010170182A (en) * 2009-01-20 2010-08-05 Mitsubishi Electric Corp Data display device and data display system
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CN102413170A (en) * 2011-10-18 2012-04-11 国网电力科学研究院 Graphic data client buffer memory method based on FLEX
CN104104719A (en) * 2014-07-04 2014-10-15 中国南方电网有限责任公司 Demonstration method for power grid real-time flow diagram in power grid dispatching mobile application
CN107133272A (en) * 2017-04-07 2017-09-05 南京南瑞集团公司 A kind of Web ends magnanimity power network resources GIS data dynamic dispatching and rendering intent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101090401B (en) * 2007-05-25 2011-05-18 金蝶软件（中国）有限公司 Data buffer store method and system at duster environment
JP2010170182A (en) * 2009-01-20 2010-08-05 Mitsubishi Electric Corp Data display device and data display system
CN102413170A (en) * 2011-10-18 2012-04-11 国网电力科学研究院 Graphic data client buffer memory method based on FLEX
CN104104719A (en) * 2014-07-04 2014-10-15 中国南方电网有限责任公司 Demonstration method for power grid real-time flow diagram in power grid dispatching mobile application
CN107133272A (en) * 2017-04-07 2017-09-05 南京南瑞集团公司 A kind of Web ends magnanimity power network resources GIS data dynamic dispatching and rendering intent

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