Design Of A Smart Fire-Fighting System Based On NB-IoT Technology

With the implementation of the national big data strategy and the continuous development of“Digital China”,the construction of smart city has been given new connotations and requirements.As an important part of smart city,smart fire protection systems are welcoming unprecedented development opportunities.To address the shortcomings of the existing fire-fighting systems,such as low information level,complex installation and wiring,inconvenience unified management and so on,this study innovatively proposes an smart fire-fighting system based on the latest NB-IoT technology.This system is mainly composed of smart fire terminal,IoT cloud platform of China Telecom and smart fire management system.The results of the corresponding research are mainly included as follows:(1)This paper introduces the background and significance of the smart fire protection system,and explains the latest development status of smart fire protection at home and abroad.(2)This paper designs the hardware of the smart fire-fighting system,and proposes the demand analysis and design goals of the system.This article explains the device selection,the design of communication transmission layer and the low power and energy saving control of software based on the design concept of low power consumption.The smart fire terminal includes a main control module,a power supply module,a data acquisition module and an NB-IoT communication module.With STM32L431 as the main control chip and lithium battery module as the power supply for the system,the smart fire terminal is designed in combination with SIM7020 C as NB-IoT communication module and HIS-07 ionization smoke sensor as the data acquisition module.This paper completes the hardware circuit schematic design of the terminal and the production of real objects.(3)This paper completes the developments of profile and codec plug-in in the cloud platform of China Telecom Internet of Things.These developments can realize the communication between the smoke sensing terminal and the cloud platform of China Telecom,and implement the real-time monitoring.(4)The intelligent fire management system is designed with C/S architecture and C#programming language,which enables users to access the system on the computer and obtain terminal data,equipment positioning and abnormal fire alarm in time,so as to realize online alarm,remote monitoring and management.Finally,the hardware and software parts of the NB-IoT smart fire protection system are tested.The test results show that the design can realize the real-time alarm and remote unified management,and is consistent with the expected requirements.Benefiting from the application of NB-IoT and the intelligent management of smart smoke detectors,the smart fire protection system based on NB-IoT in this paper has a wide application prospect and high reference value.