MQTT-Based Internet Of Things Device Access And Cloud Monitoring System

At present,the monitoring system of the IoT is applied to all walks of life,and the demand for terminal device access is increasing rapidly.Aiming at the phenomena of multi-mode access of IoT terminal equipment and limited applicable scope of the system.Based on cloud platform and IoT communication technology,this paper designs a data access box with multiple access methods and communication capabilities,and uses a "Cloud+Terminal" architecture to build a set of MQTT-based IoT device access and cloud monitoring systems.The main work of this paper is as follows:(1)Design and implementation of data access box.This article designs a data access box that uses STM32F103 as the main controller,integrates WiFi and Ethernet access methods,and builds a multi-channel serial interface,which is a terminal device without access capability or Sensor endpoints provide a communication platform for multi-mode access.(2)The communication function between the device terminal and the cloud platform is realized.In order to realize the communication function between the device side and the cloud platform,the MQTT protocol is adopted as the communication standard protocol between the device side and the cloud platform to realize the data interaction and instruction transmission between the two.(3)IoT cloud system construction.The construction of the cloud system is based on the OneNET cloud platform,web development technology and Vue+Mysql+Node.js technology,and uses the C/S architecture to develop the cloud device background management system,thereby realizing multi-terminal(Web page Or APP)to visually monitor the device-side data.(4)System function test and analysis.After completing the construction of the monitoring system on the entire IoT cloud platform,the corresponding test platform was built for different test contents in the system,and the data access box was combined by the method of sensor terminal access and virtual device access.Ethernet access and WiFi access function test,cloud system and communication function test and data analysis between the two ends(device end and user end).After testing different functions of the cloud system and its data analysis,the results show that the data access box designed in this paper can achieve stable and efficient multi-mode access to equipment terminals;the built-up cloud monitoring system is stable and reliable The data processing,forwarding and other capabilities of the IoT enable the user to remotely monitor any terminal device connected to the IoT system and grasp the real-time status of the device.