一种手持式数据采集终端的设计与实现

Design and Implementation of Handheld Data Acquisition Terminal

目前,野外环境下的数据采集主要还是依靠数据采集员手工填写预置表格,然后交给数据录入员输入计算机数据库中。这种数据采集手段涉及多人作业,其流程复杂,数据质量难以保证且易丢失。针对上述问题,文中设计并实现了一种基于嵌入式微处理器PXA270的手持终端。该终端在硬件上综合集成了有线和无线局域网、GPRS/GSM广域网等多种通信手段;在软件上综合运用了多种加密技术,在WinCE平台下,编制了具有加密通信的广域网移动通信软件,可有效地解决野外条件下采集数据的实时传输和安全性问题。

At present,data acquisition in the field environment mainly relies on the data collector to fill out the preset form manually,and then submit it to the data entry staff to input into the computer database.This method of data acquisition involves multi-person work,the process is complex,the data are easy to lose,and the quality of data is difficult to guarantee.To solve these problems,this paper designed and implemented a handheld terminal based on embedded microprocessor PXA270.The terminal integrates wired and wireless local area network,GPRS/GSM wide area network and other means of communication in hardware,integrates various encryption techniques in software,and compiles encrypted communication software within wide area network on WinCE platform,which can effectively solve data real-time transmission and security issues under field conditions.