CN104320438A - High reliability data transmission system for traction power supply operation management system and transmission method - Google Patents
High reliability data transmission system for traction power supply operation management system and transmission method Download PDFInfo
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- CN104320438A CN104320438A CN201410523753.0A CN201410523753A CN104320438A CN 104320438 A CN104320438 A CN 104320438A CN 201410523753 A CN201410523753 A CN 201410523753A CN 104320438 A CN104320438 A CN 104320438A
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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
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
Abstract
The invention discloses a high reliability data transmission system for a traction power supply operation management system and a transmission method. The transmission system comprises a data change recorder, a data transmission device, a data synchronizer and a transmission and synchronization server, wherein the data change recorder is used for generating data change records; the data transmission device is used for transmitting the data change records generated by the data change recorder and uploading data change records generated in the work area to a section part, or downloading data change records generated by the section part to the work area; the data synchronizer is used for writing the data change records in an actual database service table to enable two sub systems to realize data synchronization; and the transmission and synchronization server provides service for the data transmission device and the data synchronizer so as to support transmission and synchronization of the data change records. By adopting the above system structure, reliability and integrity of data transmission can be enhanced and realized.
Description
Technical field
The present invention relates to traction power supply operation management system field, be specifically related to traction power supply operation management system high reliability data transmission system and transmission method.
Background technology
The range of application of traction power supply operation management system comprises Railway Bureau and to power section, the electric substation work area of Rail Road Power Supply Section section departments and organs and power-feed section administration and maintenance gang for catenary, continuous several hundred kilometers, between subsystem at different levels, need the data exchanging a large amount of highly structural, originally to the bandwidth sum quality of communication link, there is higher requirement.But in current rail traction power supply industry at home, section to the quality general very low (generally can only reach 20Kbps/s) of the communication link between work area, Railway Bureau to section, and due near railway, often goes offline because of disturbing; Between power-feed section and Railway Bureau, generally also only have the dialing link of low speed, under so a kind of link condition, the full real-time interconnection being obviously difficult to realize whole system runs and the storage of centralization data.
In traction power supply operation management system, between subsystem at different levels, the flowing of data is two-way, existing from section portion to the transfer of data in basic unit work area, also has the transfer of data from work area to section portion.From section portion to the existing broadcast of the transfer of data in work area (all work areas all must receive), also have multicast (only having maintenance gang for catenary to receive) and point-to-point (passing to some work areas from section portion), situation is complicated.Daily transfer of data is mainly based on electric substation's operation data and contact line operation data, and data volume large (as electric substation, needing the data volume uploading tens forms every day), on low speed dial-up link, the transmission time is longer.In addition; due to the normally low speed, insecure of the communication link between traction power supply operation management system subsystem at different levels; midway broken string situation is often there will be during transmission data; cause that many data (itself should be atom) that produce due to a business activity are divided when transmitting to be opened so possibly; part above correctly transmits; part below is not transmitted due to broken string; if the data of previous section have been write into target database by actual, the integrality of business activity will be destroyed.
Summary of the invention
The object of the present invention is to provide a kind of traction power supply operation management system high reliability data transmission system and transmission method, solve midway broken string often appears in current traction power supply operation management system situation when transmitting data, and then cause the data of transmission imperfect, affect the problem of whole system reliability service.
The present invention for achieving the above object, realizes: the data transmission system of traction power supply operation management system high reliability, comprises data change record device, data link, data synchronizing unit and transmission and synchronization server by the following technical solutions;
Described data change record device is for generation of data change record;
The data change record that described data link produces for transmitting data change record device, the data change record section of the uploading to portion that work area can be produced, or the data change record that section portion produces is downloaded to work area;
Described data synchronizing unit writes in actual data bank service table for making data change record, makes two subsystems realize data syn-chronization;
Described transmission and synchronization server provide service for data link and data synchronizing unit, with the transmission of supported data change record and synchronous.
Further, also comprise database enforcement engine, described database enforcement engine is used for the data change that calling data change record device produces with record traffic logic.
The data transmission method of traction power supply operation management system high reliability, comprises the following steps:
A the subsystem of () one end produces relevant business datum at business procedure, and the data performed by this business procedure by data change record device change is recorded with a kind of internal form;
B () data change and are recorded after, by data change record device, by data change record write data change record table;
C data change record table that () is written into data change record does not transmit at once, when in the data change record table needing data change record to be transferred to another terminal system, just set up transmission link by manual type, and start transmission change process;
D () starts synchrodata change record after, the data change record in another terminal system is written in actual traffic table.
Further, by the detailed process in described business datum write data change record table be:
(a1) service logic carries out database update operation, and database enforcement engine adopts the mode of calling data change record device to record these more new datas;
(a2) by database enforcement engine, by database update recording synchronism in data change record device;
(a3) by data change record device, by data change record write data change record table.
Further, the detailed process of the synchrodata change record in described step (d) is:
(d1) after data link completes the transmission of data change record, by data synchronizing unit, data change record is synchronized to transmission and synchronization server;
(d2) data change record is written in actual data bank service table.
Further, it is that work area or road bureau upload to section portion or from section portion downloading data change record that process is changed in transmission in described step (c).
Further, described work area or road bureau to the detailed process of section portion uploading data change record are:
(c11) data change record is uploaded to data link by work area or road bureau;
(c12) local business logic obtains data change record table by data link;
(c13) by business, the data change record uploading to data link is packed, generate the data change record of each business;
(c14) the data change record generated in uploading step (c13) is to transmission and synchronization server;
(c15) the data change record on data link is deleted.
Further, described work area or road bureau from the detailed process of section portion downloading data change record are:
(c21) work area or road bureau are from data link downloading data change record;
(c22) local business logic obtains the final state of last downloaded by data link;
(c23) transmission and synchronization server are from data link downloading data change record index;
(c24) to each data change record generating indexes number on data link, and transmission and synchronization server is downloaded to;
(c25) the data change record on data link is saved in local business logic;
(c26) the last download state in local business logic is upgraded.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention is when carrying out the transfer of data between two subsystems, first the data of a subsystem being changed adopts the mode of internal form to record, after data change and are recorded, do not transmit at once, but when needed, set up transmission link by manual type and start transmission change process, data change record is transferred in the data change record table of another terminal system, the data change record of another terminal system is only after synchronizing process starts, just be written in actual traffic table, thus achieve one of two service of subsystem data and make peace shared.
(2) the present invention by one independently external data base enforcement engine provide service when the operation of reality more new database for business activity, database enforcement engine can change by record data, for transfer of data with synchronously prepare; In addition, because data change record is synchronoused working with database enforcement engine, be therefore easy to changing the order of record traffic generation and the affairs contrast relationship between change record and business in daily record, for reliably transmission and synchrodata are laid a good foundation; Meanwhile, the independence of transfer of data and synchronizing function and concrete service logic is also achieved well.
(3) the present invention is when carrying out transfer of data, the affairs contrast relationship between the generation of data change record order and business is not only utilized to carry out transmitting, simultaneously, the final state at transmission two ends is carried out record, and when downloading data change record, first obtain the final state of last downloaded, for breakpoint transmission provides conveniently, thus avoid data repeat upload or download, guarantee the consistency of data.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is data transmission procedure structural representation of the present invention;
Fig. 3 is record data change record sequential chart;
Fig. 4 is uploading data change record sequential chart;
Fig. 5 is downloading data change record sequential chart;
Fig. 6 is synchrodata change record sequential chart.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment:
As shown in Figure 1, traction power supply operation management system high reliability data transmission system described in the present embodiment, comprise data change record device, data link, data synchronizing unit and transmission and synchronization server, data change record device is for generation of data change record, this data change record is exactly the business datum produced in business procedure in fact, business datum goes on record in a kind of mode recording change, what complete writing task is exactly data change record device, just when record, guarantee that the order that the order of change record and original service occur is completely the same, also want the affairs contrast relationship between clear and definite change record and original service activity simultaneously, data link is for realizing the data change record transmission between subsystem, according to the difference of transmission direction, the data change record section of the uploading to portion that work area can be produced, or the data change record that section portion produces is downloaded to work area, when transmitting data, the affairs contrast relationship between the generation of data change record order and business is utilized to transmit, want record data to transmit the final state at two ends simultaneously, like this, not only can guarantee that transmission is reliably carried out, also help simultaneously and realize breakpoint transmission, data synchronizing unit is used in data bank service table actual for the write of data change record, two subsystems are made to realize data syn-chronization, when synchronous, still to utilize the generation order of data change record and the affairs contrast relationship of business, guarantee synchronously normally to carry out.Transmission and synchronization server provide service for data link and data synchronizing unit, with the transmission of supported data change record and synchronous, it can uploading data change record, downloading data change record index and data change record, write into all data change records in database practical business form.
The present embodiment adopts said system structure, the data coming to produce in record traffic process by data change record device change, and pass through data link, data synchronizing unit and transfer of data and synchronization server realize the upload and download of data, two subsystems are avoided directly to carry out transfer of data, this is low speed for communication link, insecure traction power supply operation management system, even if there is link down, also there will not be the problem that transfer of data is made mistakes, because the business datum that a terminal system produces was recorded in data change record device before this, be not create the subsystem that business datum is just directly transferred to the other end, but the subsystem of the other end needs, just erect transmission link to transmit, data change record is also just transferred in the data change record table of another terminal system by this time transmission, do not write in the practical business table of another terminal system at once, but after will synchronizing process being started, just by traffic table actual for the write of data change record, thus realize one of two service of subsystem data and make peace shared, so just achieve the transmitting of data on unstable transmission link, especially the transfer of data in traction power supply operation management system between subsystems is adapted to, substantially increase the reliability that data transmit, integrality.
The present embodiment also comprises database enforcement engine, and database enforcement engine is used for the data change that calling data change record device produces with record traffic logic.In traction power supply operation management system, all service logics are when the operation of the actual more new database of inlet wire, this database enforcement engine all can provide service, data change record device similarly is a Removable hook of database enforcement engine, if the data that current business logic produces need to transmit between subsystem with synchronous, database enforcement engine the correlation technique of calling data change record device will record these and changes, with to be transmitted and synchronous, due to data change record device and database enforcement engine synchronous working, therefore be easy to changing the order that in daily record, record traffic occurs, and affairs contrast relationship between change record and business (affairs are base units of con current control, so-called affairs, it is a sequence of operation, these operate or all perform, do not perform, it is an indivisible work unit, affairs are units that database maintains data consistency, when each transaction structure, the consistency of data can be produced), this is just for reliably transmission and synchrodata are laid a good foundation.In addition, this structure is for service logic, its only to need when calling data storehouse enforcement engine claim data the need of transmission and synchronous (can dynamic-configuration), and do not needing to carry out extra process, this just achieves the independence of transfer of data and synchronizing function and concrete service logic well, is conducive to stand-alone development and the operation of transmission system.
In actual applications, data change record device, data link, data synchronizing unit, database enforcement engine and transmission and synchronization server the mode of class can be adopted to define, database enforcement engine and data change record device are packaged into the dynamic link library file in com component, call for business logic components, be encapsulated in independently in com component in transmission and synchronization server, this assembly provides transmission and synchronous two interfaces, passively on the section of operating in portion central server, data synchronizing unit has two kinds of packing forms, in section, portion is packaged into executable file, the data that it periodically utilizes the next synchronous work area of sync cap to upload, dynamic link library file is packaged in each work area or road bureau, will be called whenever work area or road bureau have downloaded section portion data, with synchrodata, data link is also encapsulated as dynamic link library file, but be only deployed in work area or road bureau, coffret is utilized to carry or to section portion uploading data from section subordinate on one's own initiative, section portion initiatively can not initiate transfer of data, so well the bidirectional data transfers of the section of achieving portion and work area (and road bureau).Those skilled in the art, under the instruction of this specification, is easy to obtain the dynamic link library file mentioned of this part and executable file, and makes it to realize the function that this file in the present invention wants to realize.
As shown in Figure 2, the traction power supply operation management system high reliability data transmission method described in the present embodiment, comprises the following steps:
A the subsystem of () one end produces relevant business datum at business procedure, and the data performed by this business procedure by data change record device change is recorded with a kind of internal form, so-called internal form, refer to corresponding to each field in each traffic table, each field in the every bar data changed is deposited sequentially, so that synchronous, by transaction controlling change order and contrast relationship during record.As shown in Figure 3, particularly, the detailed process in business datum write data change record table is:
(a1) service logic carries out database update operation, and database enforcement engine adopts the mode of calling data change record device to record these more new datas;
(a2) by database enforcement engine, by database update recording synchronism in data change record device;
(a3) by data change record device, by data change record write data change record table.
B () data change and are recorded after, by data change record device, by data change record write data change record table, in this data change record table, comprise original service data, as daily record, tables of data etc.
C data change record table that () is written into data change record does not transmit at once, when in the data change record table needing data change record to be transferred to another terminal system, just set up transmission link by manual type (such as dialling up on the telephone), and starting transmission change process, transmission change process can be divided into work area or road bureau to upload to section portion with work area or road bureau from section portion downloading data change record.
As shown in Figure 4, work area or road bureau to the detailed process of section portion uploading data change record are:
(c11) data change record is uploaded to data link by work area or road bureau;
(c12) local business logic obtains data change record table by data link;
(c13) by business, the data change record uploading to data link is packed, generate the data change record of each business;
(c14) the data change record generated in uploading step (c13) is to transmission and synchronization server;
(c15) the data change record on data link is deleted.
As shown in Figure 5, work area or road bureau from the detailed process of section portion downloading data change record are:
(c21) work area or road bureau are from data link downloading data change record;
(c22) local business logic obtains the final state of last downloaded by data link, by the final state of the last downloaded of acquisition, when transmission link again connect, data syn-chronization open after, transmission can be continued from the power-off of transmission last time, namely, can breakpoint transmission be realized, improve the bandwidth availability ratio of low speed chain circuit;
(c23) transmission and synchronization server are from data link downloading data change record index;
(c24) to each data change record generating indexes number on data link, and transmission and synchronization server is downloaded to;
(c25) the data change record on data link is saved in local business logic;
(c26) the last download state in local business logic is upgraded.
D () starts synchrodata change record after, the data change record in another terminal system is written in actual traffic table, and as shown in Figure 6, detailed process is:
(d1) after data link completes the transmission of data change record, by data synchronizing unit, data change record is synchronized to transmission and synchronization server;
(d2) data change record is written in actual data bank service table.
The present embodiment adopts above-mentioned data transmission method, unique innovation is belonged in traction power supply operation management system field, different from traditional data transmission method, traditional data transmission method is that work area system (or Railway Bureau's system) directly sets up transmission link, from power-feed section system downloads or to power-feed section system uploading data, the mode of this direct transmission at low speed, unreliable link environmentally, often easily occur that link breaks, cause data transmission fails, transfer of data is imperfect, the problem that efficiency of transmission is low.And the present invention is also at original low speed, unreliable link carries out transfer of data, be roughly divided into three steps, the first step: record data change, second step: transmission data change, 3rd step: synchrodata changes, this three step achieves the transfer of data between two subsystems dexterously, because record data change, transmission data change to change with synchrodata to have accomplished on link relatively independent, do not require that three steps will be carried out simultaneously, even if so also just ensure that and occur link down, the transfer of data between two subsystems is not affected yet, as long as set up transmission link, transfer of data and data syn-chronization all can perform separately, breakpoint transmission can also be realized simultaneously, ensure that consistency and the integrality of data, for traction power supply operation management system, such data transmission method has huge using value.
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (8)
1. traction power supply operation management system high reliability data transmission system, is characterized in that: comprise data change record device, data link, data synchronizing unit and transmission and synchronization server;
Described data change record device is for generation of data change record;
The data change record that described data link produces for transmitting data change record device, the data change record section of the uploading to portion that work area can be produced, or the data change record that section portion produces is downloaded to work area;
Described data synchronizing unit writes in actual data bank service table for making data change record, makes two subsystems realize data syn-chronization;
Described transmission and synchronization server provide service for data link and data synchronizing unit, with the transmission of supported data change record and synchronous.
2. traction power supply operation management system high reliability data transmission system according to claim 1, it is characterized in that: also comprise database enforcement engine, described database enforcement engine is used for the data change that calling data change record device produces with record traffic logic.
3. traction power supply operation management system high reliability data transmission method, is characterized in that: comprise the following steps:
A the subsystem of () one end produces relevant business datum at business procedure, and the data performed by this business procedure by data change record device change is recorded with a kind of internal form;
B () data change and are recorded after, by data change record device, by data change record write data change record table;
C data change record table that () is written into data change record does not transmit at once, when in the data change record table needing data change record to be transferred to another terminal system, just set up transmission link by manual type, and start transmission change process;
D () starts synchrodata change record after, the data change record in another terminal system is written in actual traffic table.
4. traction power supply operation management system high reliability data transmission method according to claim 3, is characterized in that: by the detailed process in described business datum write data change record table be:
(a1) service logic carries out database update operation, and database enforcement engine adopts the mode of calling data change record device to record these more new datas;
(a2) by database enforcement engine, by database update recording synchronism in data change record device;
(a3) by data change record device, by data change record write data change record table.
5. traction power supply operation management system high reliability data transmission method according to claim 3, is characterized in that: the detailed process of the synchrodata change record in described step (d) is:
(d1) after data link completes the transmission of data change record, by data synchronizing unit, data change record is synchronized to transmission and synchronization server;
(d2) data change record is written in actual data bank service table.
6. traction power supply operation management system high reliability data transmission method according to claim 1, is characterized in that: it is that work area or road bureau upload to section portion or from section portion downloading data change record that process is changed in transmission in described step (c).
7. traction power supply operation management system high reliability data transmission method according to claim 6, is characterized in that: described work area or road bureau to the detailed process of section portion uploading data change record are:
(c11) data change record is uploaded to data link by work area or road bureau;
(c12) local business logic obtains data change record table by data link;
(c13) by business, the data change record uploading to data link is packed, generate the data change record of each business;
(c14) the data change record generated in uploading step (c13) is to transmission and synchronization server;
(c15) the data change record on data link is deleted.
8. traction power supply operation management system high reliability data transmission method according to claim 6, is characterized in that: described work area or road bureau from the detailed process of section portion downloading data change record are:
(c21) work area or road bureau are from data link downloading data change record;
(c22) local business logic obtains the final state of last downloaded by data link;
(c23) transmission and synchronization server are from data link downloading data change record index;
(c24) to each data change record generating indexes number on data link, and transmission and synchronization server is downloaded to;
(c25) the data change record on data link is saved in local business logic;
(c26) the last download state in local business logic is upgraded.
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