减小LoRa技术在实验室监测系统中报警延迟的方法研究

Research on method of reducing alarm delay time of LoRa technology in laboratory monitoring system

作为目前流行的物联网通信技术,LoRa在环境监测领域已有较成熟的解决方案,但其应用于对实时性要求高的场景时,例如实验室安全监测,相应方案不能展现出较好的性能。以目前成熟的LoRa解决方案为基础,在其架构的应用层与服务层间的通信中引入MQTT和Websocket技术,并在服务层中结合使用Node.js、Redis等技术,设计实现低延时实验室安全监测系统。该系统应用层包含Web端页面数据实时展示、移动端APP数据查看以及异常信息告警通知。同时,为实现集中管理多个监测区域的实际应用需求,设计数据推送策略,提高数据传输效率,进一步提高系统实时性。测试结果表明,对比现有环境监测解决方案,本系统能以更低的时延将终端数据传送至应用程序端。

Long of Range(LoRa),as the current popular Internet of Things communication technology,has mature solutions in the field of environmental monitoring.However,when applied to scenarios with high real-time requirements,such as laboratory security monitoring,its corresponding solution can not show better performance.Based on the current mature LoRa solution,this paper introduces MQTT and Websocket technology in the application layer and service layer communication of its architecture,and combines Node.js and Redis technologies in the service layer to design low-latency laboratory security.The application layer of the system includes real-time display of web page data,mobile application data viewing,and abnormal information alarm notification.At the same time,in order to realize the practical application requirements of centralized management of multiple monitoring areas,a data push strategy is designed to improve data transmission efficiency,and reduce the rendering time of the web page.The test results show that compared with the existing environmental monitoring solution,the system can transmit terminal data to the application terminal with lower delay.