基于NB-IOT的环境数据采集系统的构建

Construction of Environmental Data Acquisition System Based on NB-IOT

通过对环境数据采集系统进行无线自动控制,可以提高系统的无线传输距离。本文结合了嵌入式技术、无线通信技术、传感器技术等技术,设计一款基于NB-IOT的环境数据采集系统,其硬件中的传感器数据采集电路、主控处理器及GPRS模块、NB-IOT模块,完成传感器数据采集程序与NB-IOT模块组网设计,实现了PM2.5和温湿度监测、远程数据传输功能。实验结果表明:温度检测最大误差为0.5℃,湿度检测最大误差5.8%,测试精度方面能够满足系统需求;在节点增加到50个点时,丢包率仍能满足系统需求。

Through wireless automatic control of environmental data acquisition system, the wireless transmission distance of the system can be improved. Combining embedded technology, wireless communication technology and sensor technology, this paper designs an environmental data acquisition system based on NB-IOT. The sensor data acquisition circuit, main control processor, GPRS module and NB-IOT module in the hardware of the system complete the network design of sensor data acquisition program and NB-IOT module, and realize the functions of PM2.5, temperature and humidity monitoring,remote data transmission. The experimental results show that the maximum error of temperature detection is 0.5℃ and humidity detection is 5.8%. The test accuracy can meet the system requirements. When the nodes are increased to 50 points,the packet loss rate can still meet the system requirements.