Design Of Smart Fire Protection System Based On NB-IoT And EMTC

With the accelerated advancement of smart cities,fire protection is an important guarantee for urban safety.Traditional fire protection systems cannot meet the current fire protection needs when responding to the increasingly developed intelligent cities.People are paying more attention and urgent to the construction of smart fire protection,and accompanied by the Internet of Things technology.The rapid development has provided the technical support of wireless communication for the intelligent fire protection system,and promoted the transformation of traditional fire protection to intelligence.In the traditional fire protection system,it is difficult to find,investigate and deal with problems in time for periodic patrol inspections and fire warnings of buildings.This article uses the latest narrowband cellular Internet of Things wireless communication technologies NB-IoT and eMTC,combined with existing The OceanConnect cloud platform of the Internet of Things carries out real-time collection,update and reporting of environmental data,data analysis for fire-fighting early warning,and development of APP client for users,designing a smart firefighting system for environmental monitoring,fire warning,fire emergency treatment and command in buildings The system collects environmental information through data terminals and monitors on the cloud platform to reduce the problems of traditional firefighting such as manpower inspections,inconsistent data collection and information islands.Through firefighting warning,a virtuous circle of early detection and early treatment of disasters can be realized.Through remote alarms,Fire emergency command realizes timely handling and command when a disaster occurs.This system uses a low-power embedded device STM32L431RCT6 chip as the main controller of the fire protection data collection terminal,with external sensors,wireless communication modules and control units.The temperature and humidity sensor is used to collect environmental temperature and humidity information,and the combustible gas sensor is used to monitor the gas in the environment.Leak detection,flame sensor to detect on-site fire,voltage sensor to detect electricity use to achieve electricity safety,the control unit uses a buzzer to alarm in real time when a fire occurs,and the relay can control the fire water to achieve automatic Sprinkler fire extinguishing,combined with data collection terminal and control unit,realizes the functions of monitoring environmental information,fire warning and emergency treatment.Adopt LWPAN NB-IoT communication technology with wide coverage,large connection and low power consumption,and use CoAP protocol access method to connect with the IoT cloud platform OceanConnect to realize real-time data reporting and update,and the IoT cloud platform as a management platform Realize the monitoring of the operation status of the access equipment in the fire protection system,the comparative analysis and integration of real-time data and historical data,and realize the monitoring and early warning of the fire protection system;the design adopts the wide coverage and large connection in the narrowband cellular Internet of Things and supports the medium rate,Positionable wireless communication technology eMTC,combined with firefighting equipment,firefighting signs,and fire alarm buttons to achieve remote fire alarm and quickly locate the location.Fire command and evacuation can be achieved through VoLTE calls;mobile terminal APP for users is developed based on the Android system to realize users View environmental information in real time,and design data collection terminal control units by issuing instructions.The smart fire protection system is based on the systematic development of data collection terminals,NB-IoT wireless modules,eMTC wireless modules,the OceanConnect cloud platform of the Internet of Things and user APPs.It realizes data collection and reporting,command issuance control,and environmental monitoring and early warning,and through the system Transmission test and function verification test,comparative analysis of data results,to realize the basic function design of the system.