摘要
为解决污染现场的数据上传(至服务中心)问题,将通用分组无线业务(GPRS)技术应用到环境污染监测领域,数据采集模块通过串口与GPRS模块连接,将数据以无线方式上传。介绍了一种基于MC37I和STC12C5A56S2无线数据传输终端的设计。研究分析了系统的硬件结构设计,介绍了PPP协议的数据包结构,重点分析了PPP协议数据包。采用了嵌入式uIP协议栈,通过在单片机(MCU)中移植嵌入式TCP/IP协议,实现了数传终端与服务中心的数据无线传输。实验结果表明,所设计的数据传输速率能够满足污染现场数据上传的速率要求。
In order to solve the problem of transporting data from contaminated sites to service center,general packet radio service（GPRS） was applied in environmental pollution monitor domain,data acquisition module and GPRS module were connected by serial port,so data could transport by wireless.Based on MC37I and STC12C5A56S2,a design of wireless data transmission terminal was introduced.Its scheme and hardware were discussed,The structure of data packet of PPP protocol was analyzed in detail.uIP was used in the project,through transplanting of TCP/IP protocol on microcontroller unit（MCU）,data conmmunication between data transmission terminal and monitoring center was realized.The experimental results show that the speed of data transmission could meet the requirements.
出处
《机电工程》
CAS
2011年第4期482-485,共4页
Journal of Mechanical & Electrical Engineering
