Embedded Tobacco Acquisition System

Tobacco acquisition system is embedded in the traditional system of investigation and study of tobacco purchase, a full analysis of its strengths and weaknesses, based on the combination of today's popular embedded technology, to develop.System to C# as development language, operating environment for Windows CE 5.0, the database is currently more popular with SQLite, the database is more powerful, access speed, smaller footprint to support cross-platform, the program can satisfy the data management requirements, and provide good performance guarantees. Development tools using Visual Studio 2005, it is in the development of powerful embedded systems, embedded in the new project, to provide comprehensive library and control support, support third-party DLL loading, support for online debugging and deployment, and with published installation files.This paper discusses the system development process, from start to determine system objectives to system requirements analysis, to the overall system architecture and the specific details of each part of the design and implementation of text according to the system development process forward from the point and surface layers The discussed.Introduction section first describes the development background of the research situation, summed up the necessity and feasibility of system development, and then summarize the main article discusses the work and the overall organizational structure. System Overview section, first determine system objectives and goals of the system according to system requirements analysis, functional needs of the system is divided into four parts-members of the management, task management, task scheduling, accessibility, according to the overall system requirements analysis and design architecture, the system is divided into seven functional modules-Login, start acquisition, parameter setting, on statistics, the card number input, data management, system upgrades, system architecture and design of each part. Then the core of the system acquisition module in the detailed design and implementation of the acquisition module of the key and difficult technology mainly consists of two parts:hardware and software system communication and database connections. Hardware and software systems using serial communication means, the paper discusses in detail how the system serial port, serial port to the hardware device to send data received. Access database connection using ADO.NET, how to access specific system through the database, database management class how to design how to manage the database connections have carried out a detailed design and implementation. Finally, weighing the data analysis system processes the specific instance of the overall work flow. Communication protocol design and implementation of part of the serial communication protocol in a separate category, focusing on analysis. Detailed analysis of the data packet format, each represent a specific meaning, the communication protocol of transmission parameters, the packet checksum generation rule, and then by grade level query to query the instance of tobacco, detailed analysis of how to parse data packets received, the meaning of each part, and how to construct a reply packet to return.The overall design of the system are completed and tested, has been running pilot demonstration sites in tobacco, to be in stable condition after operation for widely.