Development Of Embedded Iot Controller And Monitoring Platform

Internet of Things is the dominant direction of "Made in China 2025"strategic planning.It has important influence on the industrial development.The controller is the core part of the industrial application.There are still many deficiencies in the existing controller,such as high cost,unstable system,complex fault maintenance,etc.In order to solve the shortcomings of the existing controller,many companies introduce a new generation of controllers.It can reduce the cost of production and maintenance,use more stable system and reduce the failure rate of the system.In view of the development status of the controller,this paper introduces the IoT technology and uses embedded chip to develop embedded IoT controller and monitoring platform.It realizes the function of real-time monitoring and application control.In addition,it has certain industrial application value.The main contents of this paper are as follows:(1)Scheme design.According to the functional requirements,this paper designs the overall plan which bases on the three layer architecture of the IoT.Design includes wireless sensor networks,controller hardware,controller software and monitoring platform in four parts.(2)Wireless sensor networks design.In this paper,the ZigBee wireless sensor network is built,and the hardware circuit design and software programming of the ZigBee node are carried out by using CC2530 chip.Among them,the software part includes three parts:Z-Stack protocol stack transplantation,flow analysis of node establishment and join network,ZigBee programming.(3)Controller hardware design.This paper adopts MC912 chip and according to the functional requirements to develop controller.The function of controller contains multiple control signal input,multiple relay output,multi-channel sensor AD sampling,testing in lacking phase,alarm,serial data output and so on.(4)Controller software design.The controller software design includes defining send bits,judging control signal input,judging control signal output,initialization of system parameters,serial port send function programming,sensor numeric read function programming,sensor numeric treatment function programming,three-phase voltage numeric read function programming,three-phase voltage numeric treatment function programming,main function programming and so on.(5)Monitoring platform design.Monitoring platform mainly includes the data transceiver module,database and the client-side.Among them,the data transceiver module is not only responsible for receiving data and stored in the database,but also responsible for forwarding data to the client-side.The database is responsible for the storage and maintenance of data,and to provide links to the client to query historical data.The client connects the server's data transceiver module to get the real-time data of the remote sensor and controller.It displays and monitors the status of the remote sensor and controller,and accesses the database to query and analyze the historical data.The experimental results show that the design meets the expected functional requirements,and achieves the innovative design of the controller.In addition,this design of the supporting monitoring platform,both real-time status display and remote monitoring,can also store and query historical data.