摘要
针对物联网系统数据传输问题,设计一种基于消息队列遥测传输(message queuing telemetry transport,MQTT)协议的物联网双向通信系统。该系统基于开放性物联网架构,采用stm32f1作为处理器,通过ntc热敏电阻实现温度数据采集,利用通用无线分组业务(general packet radio system,GPRS)入网,并通过sim800c实现软硬件间的连接,确保用户一直在线,采用Node.js完成温度数据双向传输。微信小程序端通过物联网平台监控多个底层传感设备,测试结果表明,该系统可实现底层传感数据的实时采集和监控,完成数据的实时双向传输,实现网关与平台间数据模型同步更新。
To deal with the data transmission problem of Internet of Things(IoT)system,a two-way communication system of IoT based on message queuing telemtry transport(MQTT)protocol is designed.The system is based on an open IoT architecture,and use stm32f1 as the processor.Temperature data collection is realized through ntc thermistor,and general packet radio system(GPRS)is used to connect to the network.The connection between software and hardware is realized through sim800c to ensure users are always online.Temperature data is transmitted in both directions by Node.js.Multiple underlying sensing devices are monitored by WeChat applet through the Internet of Things platform.Test results show that the underlying sensor data can be collected and monitored by the system in real time,the data can be transmitted in real time in both directions,and therefore the data model between the gateway and the platform can be updated synchronously.
作者
陈文艺
高婧
杨辉
CHEN Wenyi;GAO Jing;YANG Hui(School of Modern Post,Xi'an University of Posts and Telecommunications,Xi'an 710061,China;School of Communications and Information Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China)
出处
《西安邮电大学学报》
2020年第3期26-32,共7页
Journal of Xi’an University of Posts and Telecommunications
关键词
物联网架构
数据传输
消息队列遥测传输协议
双向通信
Internet of Things architecture
data transmission
message queuing telemetry transport protocol
two-way communication
