Design and Implementation of Intelligent Manhole Cover Monitoring System Based on NB-IoT

The problem of stolen and poorly managed gas well covers in cities has become increasingly prominent, and the existing urban manhole cover monitoring system has single monitoring parameters, immature technology and insufficient comprehensive analysis capabilities.To solve these problems, this paper designs an intelligent manhole cover monitoring system based on narrow band Internet of things (NB-IoT) technology. The system consists of perception layer, network layer and application layer.The sensing layer is based on the embedded ARM microprocessor and combines sensor technology to collect the manhole cover data.The network layer takes NB-IoT technology as the core and is responsible for the communication connection between the access device and the background.The application layer mainly completes the functions of data storage, display and alarm.The test results show that the system works stably and data transmission is reliable, which is helpful to realize intelligent management of smart city and create a harmonious and safe smart city environment.