Application Research On Key Techniques Of Production Of Aquatic Products Traceability Based On PDA

The Internet of things technology development in full swing,research scope gradually extended to all areas of the national economy of life,more and more mobile devices are added to the Internet of Things,and the use of intelligent terminal for information collection has become an important means of a field data acquisition, data processing and data transmission.Personal Digital Assistants(PDA) is a new electronic smart product, and the ideal vehicle for mobile to achieve data acquisition and processing. Since the advent of the 1990 s, its has the advantages and characteristics, convenient, fast, efficient conduct on-site data collection and data processing that other systems cannot match, it quickly became the main terminal acquisition equipment of a mobile information system represented, laying a solid foundation for achieving the integration of data processing aquatic information.In this paper, we mainly studies the key technology of aquatic product traceability system based on PDA mode, Such as:1) Research on application of multi-threading and asynchronous invocation.NET technology to optimize network communications and data between the PDA and the server distributed load; 2) Research on heartbeat packets and heartbeat mechanism based on TCP/IP protocol; 3) Research on SQLCE and SQLServer Database synchronization technology; 4) Design to build C / S and B / S hybrid architecture, research and development to aquatic production traceability system under different terminal platforms.In aquatic production traceability, it researches to realize intelligent information retrospective with PDA in the supply chain. When implementing the UI of the module interface, it uses Microsoft VS design logic thinking framework focusing on resolving "many-to-many", "one to many", " many to a" and other complex data logic. Through the design and implementation of system solutions, when the food safety hazards occur, consumers can quickly call to account through aquatic product traceability system, and find out the cause of the problem.Paper designed and implemented the PDA side C/S architecture and the B/S structure of traceability system of aquatic products based on the supply chain traceability information, which verifies the application of key technologies to achieve a retrospective, improve system stability, fluency, latency. It has done a thorough and useful reference and exploration for the future application of PDA.