In the years of operation and use, it has met the requirements of the original system design, and played its due role for Beijing street lighting equipment asset management and fault repair. In the years and months, considering the following factors, our center decided to upgrade the original system. First, in line with the purpose of serving the Olympics, it is necessary to raise the streetlight management work in Beijing to a higher level, which puts higher requirements on the streetlight geographic information system and electronic map. Second, the original system information is stored in a small database, and the data management capability is poor, and the security is not high. Does not have the ability to manage sea data. Third, the use of new electronic maps, the establishment of new sea data management mechanisms and access mechanisms. Fourth, due to the limitations of the software and hardware environment and technical means at the time of development, some functions of the system can no longer be used or are not practical, and some new functional modules need to be added.
First, the goal of system upgrade
The database is replaced with a large commercial database to store map data and attribute data. Improve system data management capabilities and establish a massive data management mechanism to improve data security, ensure system data integrity and uniqueness, and achieve multi-user concurrent editing and maintenance operations, ensuring rapid data entry and update from technical aspects, reserved and Data interfaces for other information systems to increase data usage.
Build a three-tier network architecture application system, optimize the original application functions, add new functional modules, increase the map browsing module, optimize the system operation process, make the system operation more reasonable, and meet the humanization requirements. Moxibustion system operation interface Second, system upgrade design overall design network structure design new system will build a three-tier network structure, see figure structure.
The method will meet the needs of other users for browsing and querying information. System network structure circle system frame design diagram The first layer is the user of Beijing streetlight geographic information system, divided into client and 1 / / commit / 0 browsing terminal, the second layer is the network used, 2 plus 3 domain 2 The third layer of Yizhou 4 network is the Beijing streetlight geographic information system. This layer is responsible for the management of various network transmission channel interfaces, and is responsible for submitting various business requests of users to relevant business processing layers for processing. . The fourth layer is the application support system, which is application-oriented and provides an operating environment and a secondary development environment for the upper two layers of application systems. The fifth layer is the system operation system% including computer network, host, database, etc., which provides physical guarantee for the Beijing streetlight geographic information system.
Security design, login control. When the system starts, the login interface is provided. If the user enters the correct password, the login is successful. The user password is maintained by the system administrator.
Beijing street lamp geographic information system upgrade and transformation street lamp client 5. 6 browsing terminal (9 3 Yi) network Beijing street lamp geographic information system computer network, host, the database and other circle system stick frame ring, authority control.
The system will implement strict authority control, and assign responsibility to each person to ensure the system has high security. Outer interface design This system provides a variety of interface methods to connect with other systems, and different system connections apply different interface methods according to requirements. File transfer method. The system and the system share information by exchanging files, which is easy to implement and has low requirements, and can meet the transmission and sharing of less and non-real-time data. , database interface mode. According to the fasting, the system can also convert the saved data into different forms, and output different formats according to user requirements. In order to ensure the accuracy and consistency of the data, it is necessary to determine the unique modification right of each data record in combination with the actual requirements of Beijing street lamps. Message transmission method. Utilize, and replace the positive protocol with the magic stare socket to achieve data exchange.
This is a relatively common communication method. It can realize the transmission and exchange of data packets directly in the network by using system calls. It is efficient, real-time, easy to use, easy to implement, and supports heterogeneous operating systems. And data transmission and exchange in the WAN. Third, the function design of the system upgrade and transformation, the system function module design is based on the characteristics of the equipment information and daily management information of the Beijing Street Light Management Center. The system is divided into the street light information management subsystem, the geographic information subsystem, and the 6 information query subsystem. Three subsystems, as shown.
Beijing streetlight geographic information system road. Light management information check loop function function module circle function design, graphics operation. Graphic display content, grave base geographic information. Topographic maps that can distinguish between the following basic elements, including place names, buildings, rivers, green spaces, railways, surface elevations, road road centerlines, roadside lines, units, etc. The map data data format, layer classification, and field definition meet the requirements for the use of the Beijing Street Light Geographic Information System. The streetlight facility is layered.
Substation, box transformer distribution room, transformer, control box, lamp pole, cable, overhead line, light box, lamp, light source, cable, lightning arrester, work well, switch load switch, fuse, etc. Graphic operation, basic operation of graphics. The user interface is all in the form of a menu and a mouse. The user can conveniently use the mouse to perform operations such as no navigation, open and large reduction, and target selection, thereby facilitating browsing of the distribution of street lamp facilities and lines. Layer display control. Graphic elements and colors can also be selected according to the nature, layered freely, modified fonts for graphic entities, and various options for solid line width.
Layers can be displayed or not displayed depending on the user. Graphic measurement with a scale function for lateral spacing of any two points. Calculate the length of the line between the two points and count the number of street lighting equipment in the section. You can use the mouse to circle the area rectangle, circle or polygon on the screen to count the number or capacity information of various street light devices in the area. Graphic query, "dot map" mode query device database data through the mouse can open the window, open any polygon to query the street light equipment database information in a window. Enter the name of the road or the name and number of the streetlight equipment, and use fuzzy query to display their geographic location and database information.
The graphic editing tool provides tools for adding, brushing, and modifying points, points, lines, polygons, and text on all graphic entities on the map. Edit the geography and streetlight facilities with this editing tool. The user edits the maintenance operation. Each group of street lamps can maintain data of a certain layer of the map at the same time by multiple people and multiple terminals, and the map operations performed by each terminal can be simultaneously displayed on other terminals, thereby realizing multi-user editing and maintenance operations. A dedicated label library. Create and provide special signs for street lamps to quickly complete the marking of street lights and equipment. The street light equipment data attribute information management equipment management adopts an open equipment management mode. The type of equipment and the management of technical parameters can be customized by the user according to the actual situation of the unit, and can be conveniently added to the system for maintenance.
The combination of “figure one†is realized, and the graphic information of the device is connected with the attribute information through the spatial mapping technology, and the user can conveniently query the attribute information of the device from the device graphic to the device, and can also conveniently query the device from the device attribute information. Graphical information. Realize the integration of equipment "number" management. The street light system equipment file management user writes the corresponding equipment file according to the different conditions of the equipment. The system can conveniently provide the functions of the device file, modification, side division, printing and so on. And can be associated with its graphical target, convenient and quick to find out the graphical information of the device. The device retrieval system can perform a search query by any combination of the attribute fields such as the bit number, name, address, and model number of the device.
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