The Design Of Electricity Professional PDA Application

The daily work of electricity professional persons is tedious and complicated. Usually they need to use diverse instruments, while all these instruments have the defects, such as physical bigger volumes, inconvenience taken, without the automatic data processing ability, etc. At the same time, they usually need to search a great deal of electricity related data and use various electricity formula, while these data and formula distributed in different places again, hunting and seeking is very inconvenient. Electricity professional PDA is created under the kind of need. It is a multi-function palm equipment of integral whole, including multimeter, oscillograph, data searching, formula computing, timer, calculator, on-line data updater and favorite.The paper is the detailed description to the research work of "Electricity Professional PDA" topic, and carries on discussion to the place of the innovation and the shortage on the topic at the same time.In the aspect of hardware design, the professional PDA adopts the S3C2440processor which based on ARM9, and expands topic related function modules based on the processor.In the aspect of operating system, the professional PDA uses the embedded operating system WinCE. The paper detailed describes how to custom the WinCE kernel, how to write the key driver procedure, and ports the system mirror to the target equipment.In the aspect of software design, the professional PDA uses the VS2005IDE to do the software development. The paper gives the detail description of software design and implementation, also makes certain discussion to the function to be improved. In general, the software adopts the modularize design, the coupling degree of each module is smaller, and expansibility is better. A great deal of data involved in the software mainly stores in the embedded database SQLite, XML document and common text file. Moreover, the professional PDA has the capability to correspond with the server. With the on-line function, it can do data exchange with the server easily.In practice, the PDA has the advantage of convenience, quick response, strong stability, great data processing, etc. In virtue of the PDA, the working efficiency of electricity professional persons will be promoted obviously.