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Design 2 Network Planning 3 Software and hardware configuration 4 system design 4.1Overall design 4.2Subsystem design 5About organization usersICInstructions for using the card
1 Design requirements The Shanghai Gas Company’s Liquefaction Plant has approximately75Million users, the first phase needs to be adoptedICThe card’s liquefied gas supply station has53Each belongs to9Business stocks, which belong to3Offices, related agencies include the Finance Section, Industry Office,3A storage tank yard, Meihua Company and Meishen Company. The user group of the Shanghai Coal Company’s Liquefaction Plant is huge, and it is divided into planned users, market price users, Meihua users, Meishen users, and unit users.
According to these requirements, the system should complete: Accounting Management of Shanghai Coal Liquefaction Special Card Regulations on the currency used by the system: The transaction currency of the system is set to RMB, the clearing currency is set to RMB, and the sub-currency is accurate to the minute
2 Network Planning The network design takes into account the second phase of networking nodes, so the network planning mainly considers two issues: one is channel performance, easy operation, and simple maintenance, and the other is safety and reliability. The business network of the Liquefaction Institute is divided into two layers. The first layer is the business network, mainly supply stations, scattered in various districts of the city, and the second layer is the management network, which mainly consists of business units, business sections, finance sections, and industrial offices. Except for business units, office locations are relatively concentrated. The data transmission characteristic of the business network is that the data is transmitted in batches in a centralized manner, and the channel time is not much. Therefore, a circuit-switched network, that is, a telephone network, can be used to connect to the server by dial-up Internet access.The management network needs to process a lot of data, and it takes a long time to connect to the database, and the channel takes a long time, so it usesISDNConnect with the database.At present, the remote network generally usesDDN,ISDN,X.25Wait,DDNThe transmission efficiency is high, the bandwidth is relatively wide, and it is suitable for occasions with large amount of information and high transmission requirements, but the communication cost is also relatively high;X.25The construction cost is low, but if the amount of information transmission is large, the communication cost is very high, and the line is not very stable;ISDNThe current telephone line can be used, and the monthly cost is about400Yuan, does not increase the cost due to the large communication volume, so it is suitable for occasions where the communication volume is large and the communication cost is relatively economic, and the construction cost is also lower thanDDN, More suitable for the situation of the liquefaction plant. The network structure of the system is as shown in the figure below. The backbone network of the card department’s accounting server adopts 3 Software and hardware configuration This system usesClient/ServerSystem structure, the front desk is divided into two layers, the first layer is for each supply station, and each supply station is equipped with threePOSThe system is used for data collection of charging, card issuance, steel cylinder management, etc. The work of the supply station is mainly to charge, issue cards, inquire, print receipts and other functions.POSThe system has been able to complete these tasks, and it is easy to operate, not prone to errors, and can transmit transaction data in real time.So adoptPOSThe system can save equipment investment and operating costs, lower requirements for operators, and reduce the rate of work errors (generally, the computer operation level of the staff in the supply station is low, and it takes a long time to train). The configuration of each site is as follows: Three setsICCardPOSSystem, three sets of receipt printers. The second layer is the management network layer, including various business units, storage tank yard, business section, financial section and other departments. The computer configuration of these departments is as follows: The central network equipment is as follows: The database server configuration is as follows: Operating system isSCO UNIX 5.0, Longma Chinese system, the database system isSybase SQLServer Ver 11.0. Two microcomputers for system maintenance work, the configuration is as follows: Operating system isWindows95, And other related softwareODBC 2.5,SQL Client,Visual Basic 5.0Wait other devices: Each business unit, each storage tank yard, each department is equipped with a computer, the configuration is as follows: Operating system isWindows95, And other related softwareODBC 2.0,SQL Client,Microsoft Internet Explorer 3.0Wait. Each department is equipped with a computer in the business department, finance department, and industrial office. The configuration is as follows: Operating system isWindows95, And other related softwareODBC 2.0,SQL Client,Visual Basic 5.0,Microsoft Internet Explorer 3.0Wait. Fulcrum network equipment 4 system design 4.1Overall design The system should complete the business processing of the entire liquefaction plant. Card opening and card replacement processing Ventilation treatment Bottle delivery workers use portablePOS, Go to the user’s home to read the card, check the cylinder number, enter the new cylinder number, and deduct the payment.The transaction content is written into the work card, after returning to the station, enter the onlinePOS.
Three, add money (ICCard loading) processing All kinds of users can go to the branches of Agricultural Bank of China to make deposits, and they can also go to the supply stations to add money. 4. Account cancellation processing Various user certificatesICCard and valid certificate go to each business unit to go through the procedures of card cancellation and account cancellation, and returnICThe balance on the card (including30YuanICCard deposit). Five, query processing All kinds of users enter the password when swiping the card, you can query the date of the last bottle change,ICCard balance, cylinder number. Six, statistical processing The business section publishes monthly statistical reports on the business situation of each office section. 4.2Subsystem design Functions that should be completed are Enable Should be completed: Card data entry Should be done User data entry (including computer management data conversion) Should be done POSData entry (merchant management and equipment management) Should be done POSTransactions include deposit, consumption, cancellation, reconciliation, and card issuance (initial) Should be done System operator data entry 4.2.7Cylinder management The following functions should be completed: Enable 5About organization usersICInstructions for card use and industrial office system According to the documents of the Industrial OfficeICAs mentioned in the “Preliminary Plan for Card Business Operation”, for the part related to this system, the unit card business is basically similar to other businesses. The system can be used for the whole office. The storage tank yard and the supply station use the same system. Business management It can be distinguished from users managed by other stocks through user numbers, and the expense status can be reflected in time through daily electronic reports and can be directly inquired through the Internet. |
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