基于WSN的地铁车站温度数据采集系统设计稿毕业设计稿.docVIP

摘 要 如今，在中国掀起了地铁项目建设的高潮，地铁作为方便快捷，时尚绿色的交通方式，已经成为了诸多市民出行的第一选择。民心所向，地铁项目在中国遍地开花结果。这就需要对地铁环境的安全性提出了较高的要求。其中尤为重要的一项是地铁站的温度检测和火灾报警。以往的温度数据的采集往往靠有线的设备，不仅布线繁琐，工作量大，而且信号在远距离传输的过程中易受其它电子设备的干扰，自身也存在着信号的衰减，增加了信号处理的难度。随着无线通信的快速发展，无线产品如雨后春笋般迅速增加，因此，利用无线的通信模块来实现数据的传输必将成为新的发展趋势。 本设计是基于ZigBee的地铁站温度检测系统，利用无线射频网络ZigBee技术构架起树簇型网络。通过ZigBee终端上安装数字式温度传感器DS18B20进行温度采集，然后通过无线网络发送给上位机，以供检测。 本设计重点介绍了温度传感器终端的设计，并详细分析了基于ZigBee技术的树簇状网络的构建及上位机显示设计。并通过搭建实验平台，对地铁站温度实现了采集，完成了基于ZigBee的地铁站温度检测系统的设计。 关键词：ZigBee技术，温度检测，DS18B20,无线通信 Abstract Nowadays，there are so many subway projects being constructed in so many cities in China. It is so fast,convenient and fashionable that take the subway has became the first choice of many people travel.However,it requires high requirements for the security of the subway environment. What is particularly important in a subway station is the temperature detection and fire alarm. In the past, temperature data collection often rely on a wired device, which means not only cumbersome wiring and a heavy workload，but also signal susceptible to interference from other electronic devices in the process of long-distance transmission with the signal attenuation, thus increase the difficulty of signal processing. With the rapid development of wireless communication,wireless products increased.Wireless communication module for data transmission will become the new trends. The design is a subway station temperature detection system based on ZigBee.Setting up a radio frequency network using ZigBee technology to form the framework of the tree cluster network.Install a digital temperature sensor DS18B20 to collect temperature data by ZigBee terminal,then sent to the host computer through a wireless network. The design focuses on the design of the temperature sensor terminal and a detailed analysis based on ZigBee technology tree clustered network and PC display design.Through building the experimental platform and collecting the temperature of the subway station, ZigBee-based