Research And Design Of Acquisition Terminal And Cloud Monitoring Platform Based On NB-IoT

With the advent of the fifth-generation mobile communication technology,the rapidly developing Internet of Things technology is gradually being applied in daily life,and the research and application of remote data monitoring platforms have become a hot spot in the field of Internet of Things.However,the data monitoring platform used in unmanned passive scenes faces the problems of high power consumption of data collection terminals and incomplete data management of multiple devices.Therefore,it is of practical significance to design a data monitoring platform with low power consumption and easy management.This topic reduces hardware power consumption by selecting key components,reducing terminal operating power consumption based on DPM algorithm design,and facilitating the management of terminal data collection through the development of cloud platforms.The main research contents are as follows:1.Conducted a detailed investigation on the status quo of wireless Internet of Things collection terminals,analyzed the development status and application fields of several mainstream Internet of Things communication technologies such as WiFi,ZigBee,NB-IoT,LoRa and Bluetooth,and concluded: NB-IoT network It has the characteristics of low power consumption,wide access,wide network coverage,and low speed,which meets the requirements of this design.2.Analyze the power consumption composition of the acquisition terminal,and study some measures to reduce power consumption.Through the analysis and comparison of the performance of the current mainstream micro-power processors and communication modules,select the appropriate circuit modules to complete the principle analysis and circuit design of each module,including power modules,low-power STM32L431 controller modules,sensor modules,BC95-G communication module design.The terminal was tested.The results show that reducing non-essential components,selecting low-power components,lowering the supply voltage and reducing the quiescent current can reduce power consumption.3.Designed and implemented low-power acquisition terminal software.It mainly includes driver design,data acquisition module design,control module design,NB-IoT wireless communication module design,realization of CoAP data structure and optimization design based on DPM algorithm.The results show that the optimal design based on the DPM algorithm can increase the use time of the equipment by controlling the working status of each module.4.Develop the equipment side of the cloud platform,upload the four terminal data of the system responsible for collecting temperature and humidity,light intensity,harmful gas concentration and location information to the cloud platform to realize the functions of data storage,analysis and display.Build WEB applications to realize functions such as terminal real-time monitoring,remote control,abnormal alarm,GPS positioning,and viewing of historical data.Through the development of the cloud platform,the entire system becomes simple to operate and maintain,which can meet the requirements of use.This subject has developed and tested the NB-IoT-based acquisition terminal and cloud monitoring platform.The results show that the operation effect is in line with expectations and has certain practical application value.