基于无线WIFI的实时环境监测系统设计

Design of real-time environment monitor system based on wireless WIFI

针对当前严重的环境污染问题,设计了一种基于Cortex-A8的嵌入式无线环境监测系统,实时获取环境参数,并可查看现场监控视频。系统通过交叉开发模式在PC端虚拟机进行开发,应用于嵌入式Linux平台。硬件部分选用三星公司的S5PV210作为主控芯片,选用DHT22传感器采集环境中温湿度参数,选用夏普灰尘传感器实现粉尘浓度的采集,同时采用罗技C310网络摄像头实现现场视频监控,通过无线WIFI模块实现客户端访问。软件部分在Linux系统中移植了嵌入式web服务器Boa和SQLite数据库。系统采用B/S模式进行交互,利用CGI程序返回用户请求的监测数据和现场监控视频。经过对系统进行性能测试,能够及时反馈环境实时参数,操作方便,布线简单,符合设计要求。

In the light of the serious environmental pollution problems,this paper designs a wireless environment monitor system based on Cortex-A8 to obtain the each parameter of the enviroment,and site monitoring video. System through the Crossing-development model in virtual machine of PC for development,applied to embedded Linux platform.The part of hardware uses the SPV5210 produced by Samsung Company as the main control chip,uses the DHT22 sensor to collect the enviroment tenperature and humidity parameter,selects the dust sensor produced by SHARP Company to achieve dust parameter acquistion function,in the meantime,uses the Logitech-310 webcam to achieve real-time video surveillance. The wireless WIFI module provides clients access.In the software part,embedded web server Boa and SQLite database are ported to Linux system.The interactive system bases on B/S framework,uses CGI program to return monitor parameters and site video client requested. After tested,the system can get feedback of enviroment parameters timely,can be operated conveniently and wired easily.Function is compliance with design.