基于ZigBee的图书馆无线温湿度监测系统设计

Research on Wireless Temperature and Humidity Monitoring System of the Library Based on ZigBee

针对图书馆内传统温湿度传感器采用有线方式传输数据时存在的成本较高和线路冗余问题,本文研究了基于ZigBee技术的图书馆无线温湿度监测系统。该系统以TI公司的CC2530芯片作为硬件开发平台,网络节点设备从上到下分别为协调器、路由器和终端设备,其中协调器通过RS232串口与上位机通信,终端设备在图书馆内呈分布式排列;监测系统的软件设计主要通过IAR集成开发环境和Z-stack协议栈完成,协调器通过相关组网原语操作,建立了ZigBee无线网络,并在AODVjr算法基础上改进了ZigBee路由算法。通过无线传感器网络(wireless sensor networks,WSN),工作人员可以在上位机实时监测图书馆温湿度变化,从而及时发现异常状况并处理。通过实际组网测试证明,该监测系统性能稳定,测量准确,移植能力强,可以扩展连接其他传感器。该研究具有一定的实际应用价值,可用于更多领域。

In view of the disadvantages of the traditional wired sensor monitoring the temperature and hu- midity changes in the library, such as the high cost and the line redundancy etc. , in this paper, we study the wireless temperature and humidity monitoring system based on ZigBee technology. The wireless moni- toring system takes the Ti CC2530 chip as the hardware development platform, the network node equip- ment from top to bottom are： the coordinator, the router and the terminal equipment. The sensor modules are embedded in the terminal nodes, and they are distributed in the library. The coordinator nodes commu- nicate with the host computer through RS232 serial port. The software design of the monitoring system is accomplished by IAR integrated development environment and Z-stack protocol stack, the coordinator node builds a ZigBee wireless network through the related network primitives, and we improve ZigBee routing algorithm based on AODVjr algorithm. Through wireless sensor network （WSN）, the manager can moni tor the changes of temperature and humidity in the library in real time, so that they can discover and deal with an emergency in a timely manner. It proved that the monitoring system performance is stable and ac- curate through the actual network test. The wireless temperature and humidity monitoring system is high- ly portable, and it can be extended to connect to other sensors. Therefore, this research can be applied to more fields.