Wireless Order-dish System Base On Embedded Linux

Wireless order-dish system is a principle part of restaurant service management system. At present,there have been many kinds of order-dish systems in native market,belonging to high or low rank,but they aren't introduced in restaurants widely. It can be speculated that scarcity of medium system satisfying china society is the main reason. In this thesis,it analyses the advantages and disadvantages of all kinds of order-dish systems,and concludes that the primary difference among so many system is the implement method of order-dish terminal. Based on this conclusion,it put formard a appropriate solution ranking in medium class:building the wireless order-dish terminal using embedded system technologies. It describes the total system through wireless networks,terminal operating system,terminal graphic display system-QT and database server.Through the comparison among several wireless transmission means, this article selected the wireless LAN way to achieve data transmission.Wireless LAN is of virtues of conveniently-connected-to network, reliable communication,low cost,flexibility,mobility and high throughout, and so on.In the design of terminal, we use MagicARM2410 as the development platform,and build a cross-compiler environment for development on PC. In the bottom of the software system,we transplant U-boot and use it as bootloader which bootloaded operating system. This paper chosed embedded linux as the operating system.The process of transplantation is that:we first configurate linux 2.4.18 kernel and compile it,only leaving the options of the system needs, which make the core more streamlined;then use ramdisk to make the root file system. After that,we use Qt Designer to design the application program,and make Qt / Embedded graphics shared library as the basis to achieve the interaction of backstage database, which could mainly provide users with the function of query, insertion, deletion, and so on for data.In the design of server,we used the linux operating system of desktop version,and we established a MySQL database.The menu and ordering menu established in database were used to facilitate the customers' view of dishes and record the order information. This system uses the C/S network as the communication mode.In the end,it made further analyses and summary.It gave the prospects of embedded systems and wireless LAN.And also it points out the deficiencies and the direction of improvement.