Research Of Smart Elevator Monitoring System Based On NB-IOT

As the necessary transportation equipment of high-rise buildings,the safety and rapid maintenance of elevators are closely related to people's daily life.As a means of monitoring the elevator,the remote monitoring system becomes more and more important in the daily operation of the elevator.Based on the complex deployment and short transmission distance of traditional elevator monitoring systems such as Wi Fi,Zig Bee and Bluetooth,in order to meet the opportunities and challenges brought by the development of the Internet of things,the new lpwa network technology narrow band Internet of things(nb-iot)is developing and deploying rapidly all over the world.This technology makes full use of the current authorized spectrum resources and is easy to deploy,so that various business needs of the Internet of things industry can be effectively met.The thesis mainly designs and develops the elevator intelligent monitoring system based on narrowband Internet of things: this system includes terminal controller which can collect elevator operation information and carry out protocol conversion,network system which can transmit data,monitoring software with perfect function and stable operation.Firstly,the paper briefly analyzes the technical principle of nb-iot technology,including wide coverage,massive connection and low power consumption,elaborates the COAP protocol widely used in the application layer of the Internet of things,and introduces the Telecom Internet of things platform for building the system;secondly,it gives the hardware design part of the system,introduces the hardware schematic diagram used in the system and the corresponding driver The communication process from nb-iot equipment end to the Internet of things platform is realized.The design of nb-iot communication protocol and upper software is given again.Finally,the system performance test and analysis are carried out.The system developed in this paper can maintain the basic information of computer,carry out remote maintenance,remote fault diagnosis and treatment,early diagnosis and early removal of faults,and make statistics and Analysis on the operation performance and fault conditions of elevators,so as to facilitate different departments to use the system for effective monitoring and management.