| With the rapid development of communication technology and Internet of things technology,smart home has developed rapidly.A variety of smart home devices have entered our lives,greatly facilitating our daily life.The network architecture of smart home takes the cloud platform as the data center,and its data storage,data processing and data analysis are all completed on the cloud platform.This network architecture makes computing and storage resources too concentrated on the cloud platform,which brings about problems such as long data transmission delay,serious network bandwidth occupation and poor real-time equipment control.With the increase in the number of smart home devices and the large increase in the amount of data generated by them,these problems become more prominent.The network architecture of smart home based on cloud platform as the center of data processing is difficult to meet the requirements of smart home devices for smart home network architecture in the new environment.As a computational power supplement to cloud computing,edge computing builds an edge computing platform with data storage,data processing and data analysis on the edge side,and provides data computing and storage resources at the data source,which solves the problems of cloud platform-centered smart home network architecture well.In this paper,edge computing technology is introduced into the smart home network architecture.Build a new smart home network architecture.In this new smart home network architecture,the edge computing platform is mainly built on the edge intelligent network.In this paper,an edge intelligent gateway is developed for the field of household indoor environment monitoring.Based on the traditional smart home gateway,edge computing technology is used to enable the edge intelligent gateway to complete the storage,analysis,processing and device control of the home environment data on the edge side.This paper mainly carried out the following research and design work:(1)The 4-layer network architecture of intelligent home iot gateway based on edge computing is studied.The edge layer is added into the original smart home Internet of Things network architecture,and the network architecture is changed into perception layer,edge layer,network layer and application layer.The edge layer is studied with emphasis.Then,the edge computing platform is deployed on the edge intelligent network to realize the edge layer function.The edge intelligent gateway can complete the processing,analysis and storage of home environment data on the edge side.(2)The communication interaction protocol and edge data fusion algorithm of the edge intelligent gateway are studied.A unified communication interaction protocol is designed for the edge intelligent gateway,which is convenient for subsequent intelligent terminal devices to complete the device access according to this protocol,so as to improve the extensibility of the communication mode and protocol of the edge intelligent gateway.The edge data fusion algorithm is designed for household indoor environment monitoring field,which is used to complete the comprehensive evaluation of household indoor environment quality.The edge data fusion algorithm adopts the two-level data fusion algorithm,the firstlevel data fusion algorithm completes the data fusion of homogeneous sensors,and the second-level data fusion algorithm completes the data fusion of heterogeneous sensors.(3)Research the hardware system of the edge intelligent gateway,and make the physical hardware circuit board.The hardware system of edge intelligent gateway uses RK3399 as the main control microprocessor,and on the basis of this chip design of computing module,storage module,communication module,power supply module and so on.The hardware system of edge intelligent gateway is divided into core board and baseboard.The core board is designed with 10 layers of PCB,and the baseboard is designed with 4 layers of PCB.(4)Studied the problems of device communication,device management,data management,video transmission and other aspects of the edge intelligent gateway,and completed the system design,front-end design and back-end design of the edge intelligent gateway.System design completed Android 8 driver development,system configuration,compilation and system transplantation;The front-end design completes the human-machine interface of the edge intelligent gateway.The back-end design realizes the function of edge intelligent gateway.(5)The prototype of the edge intelligent gateway is developed,the test platform is built,and the hardware test,interface test,function test and performance test of the edge intelligent gateway are completed to verify the reliability and stability of the edge intelligent gateway.The test of the edge intelligent gateway shows that the edge intelligent gateway can quickly and correctly complete the access and management of intelligent devices,and can quickly complete the control and response of intelligent terminal devices.In addition,the edge intelligent gateway can complete the data aggregation and management of the home environment,reducing the occupation of network bandwidth by the smart home gateway.These tests fully show that the edge intelligent gateway has good stability,reliability,practicability,and can well solve the problems encountered in the field of smart home. |
PDF Full Text Request