基于MQTT协议的智慧公交系统研究

Research on Intelligent Public Transit System Based on MQTT Protocol

城市公共交通是解决居民出行问题、缓解城市交通压力的重要方式。设计一个基于MQTT协议的智慧公交系统,该系统包含终端采集设备、中间消息服务器EMQX、智慧公交管控平台等三部分。中间消息服务器和管控平台部署在云端,终端采集采用嵌入式设备,终端采集设备与中间消息服务器之间通过MQTT协议进行通信,设计了上传和下发MQTT主题消息格式,终端采集设备采用面向移动应用的嵌入式系统开发技术,在存储、CPU资源、功耗电流、网络稳定性等方面表现出良好的性能。

Urban public transportation is an important way to solve residents'travel problems and relieve urban traffic pressure.An intelligent public transit system based on MQTT protocol is designed,which includes three parts:terminal acquisition device,intermediate message server EMQX and intelligent public transit control platform.The intermediate message server and control platform are deployed in the cloud,and the terminal acquisition adopts embedded devices.The communication between the terminal acquisition device and the intermediate message server is carried out through MQTT protocol,and the MQTT theme message format for uploading and issuing is designed.The terminal acquisition device adopts embedded system development technology for mobile applications,demonstrating good performance in storage,CPU resources,power consumption current,network stability and so on.