基于北斗和ZigBee的环境质量监测系统设计

Design of System for Monitoring Environmental Quality Using Beidou Satellites and ZigBee

摘要:

针对目前环境空气质量监测系统大多操作复杂、显示控制单一及不能远距离报警的弊端,设计了基于北斗和ZigBee的环境空气质量监测系统,该系统可以在远距离的情况下自动完成组网,实现对空气中的温度、湿度和烟雾空气指标的监测和预警功能；系统中的采集端主控模块完成对多种传感器采集的信息进行显示与参数的设置工作,采用数字式温湿度传感器和离子烟感实时采集空气中的监测对象,空气指标数据通过每个子模块中的ZigBee路由及终端节点组成的无线局域网进行数据的传输,所有信息汇总后由ZigBee协调节点模块经北斗卫星网络进行实时传输,从而实现对远程空气质量监控的目的；经实验证明该系统温度误差值小于2.5%,湿度误差值小于等于4%,具有传输稳定、使用领域广阔和覆盖面积大等优点,符合未来智能报警领域的发展趋势,具有一定的实用价值和可推广性。

Abstract:

The currently available systems for monitoring environmental and air qualities are complex to operate, have insufficient display and control functions, and are unable to issue alarms remotely. Hence, in this paper, we design a system for monitoring environmental quality using Beidou satellites and ZigBee. By automatically forming a network, the proposed system can measure indicators about air humidity, temperature and smoke, and issue alarms. The major control module of the collection terminal is responsible for collecting sensor data, displaying information and setting up parameters. The digital temperature and humidity sensors and the ionic smoke sensors are used to measure the air indicators in real-time, which are then transmitted via the wireless local network consisting the ZigBee routes in each sub-module and the terminal nodes. All the data are aggregated and transmitted by the ZigBee coordinator nodes in real-time through the Beidou satellite network. By doing this, we manage to monitor the air quality remotely. The experiments show that the system can transmit data reliably, Temperature error value is less than 2.5%, humidity value error less than 4%,be used in a broad variety of domains and cover wide areas. Following the future trend of issuing alarms smartly, the system is practically useful and can be introduced to other applications.