Analysis And Study Of Smart Home Gateway And Information Push

The Internet of things is to connect the information of things with each other,to let people perceive information quickly in order to understand the objective world,and to make corresponding decisions.Quick awareness of smart home information can help people to quickly understand household information,and easy to make positive response.It uses residence as a platform,forms efficient residential facilities information and transaction management system via network communication technology,security technology,control technology and information management technology to integrate the household life information,It improves home security and convenience,environmental protection and energy saving living environment.Intelligent household connects household equipment via the Internet of things technology,for a variety of equipment information collection and control,to achieve remote control,security,environmental monitoring and other purposes in the distance.It improves the living function of intelligent buildings,and provides detailed information exchange function.Information push is a corresponding technology of sending out the necessary information online regularly or irregularly to reduce the user access overload.It can automatically transmit information to the user to save the network traffic and search time,filter the information according to user's demand so that push the information regularly to all types of users,and to help find information of user value.Smart home information push is to use such technology,to collect,analyze,and filter the household equipment information,and transfer of useful information to the user.This article is the analysis and research on the main problems and the key technology of smart home information push system.It put forward a household equipment state push strategy algorithm,a information transmission and a storage methods to meet the needs of modern intelligent building based on the analysis on the function of the existing push system,in view of the smart home information push.It mainly solved the following problems:household equipment data acquisition;data filtering and fusion;concurrent transmission of home gateway data;storage method of push data;data push strategy of household equipment monitoring and so on.Monitoring data acquisition uses Zigbee wireless sensor network architecture,completes the intelligent household monitoring data acquisition controller design,mainly includes the terminal nodes,the router nodes,coordinator,home gateway design,etc.Establishing common sensor interface,mainly design environment monitoring node,security class node,home appliance class node.There are two main types of acquisition signal:digital information such as the infrared pyroelectric,door magnetic,magnetic window units and the digital information such as temperature,humidity,concentration of toxic gases,data interface design can be configured according to the external sensors.Data transmission uses nodes of Zigbee wireless network architecture to design wireless nodes and its interface,the router nodes have function of wireless routing,each node using the wireless security communication protocol.A handshake protocol,device node identification,information encryption,and information communication rules need to be designed.The coordinator and gateway uses a serial port connection to transmit data.Data is filtered on the home gateway,using the traditional way of data screening,filtering the data of repeat equipment and the large amount of data collected by various sensors,screening effective data for intelligent household monitoring system,and then upload to the upper server.It can reduce information flow from home gateway to the upper server and the server load in the process of concurrent transmission process.Storage of household monitoring data is a problem which many systems are facing.A large number of real-time data acquisitions inevitably cause a large amount of data storage,and these data will become overdue monitoring data at any time.How to store these data effectively,which can reflect the state of equipment,and can reflect the current state of real-time data in time,and cannot let the acquisition of a large number of monitoring data causes the swelling of database and a large amount of consumption of computer storage resources.Put forward the way of using dynamic database storage monitoring data,the system threshold setting,cleaned or dump expired data regularly,to avoid the database swelling and the unlimited consumption of storage resources.We choose TCP/IP concurrent transmission mode to connect wireless sensor network and the upper server.Because a lot of data from home gateway need to be pushed to the upper server,the push server need to process and store all the monitoring data,deliver it timely,and reduce the delivery time delay,especially for the data of security node.So on the server side using concurrent technology has put forward a concurrent receiving home gateway data transmission method,greatly enhance the efficiency of the monitoring data transmission,and laid a solid foundation for instant push message.The push strategy of household equipment monitoring data includes automatic push and manual push.Each type of algorithm will be included according to the user name,alias,label,and broadcasting.Manual push is a single device information push,some important or urgent data from the database can be selected and matched artificially and then pushed to someone or some people who needed.Data can be pushed according to the user name,alias,labels and push broadcast way.Automatic push is in accordance with the time,device type,device address,and degree of priority to select or push database monitoring data regularly or erratically.When the system tags that there is emergency data,such as the issue of information security monitoring equipment,it will be immediately pushed to the user.Monitoring data management system design,can store and display monitoring data,and through the AndroidPN source project to design the real-time push system to push household equipment information to the mobile intelligent device such as smart phone to share information.Between mobile devices and the push platform we use Socket long connection enables the server to push the warning message automatically to the users when the abnormal situation happened.Finally set up a simulation platform for test system,do functional tests for server,gateway and the client,and implement household equipment information push system based on AndriodPN.The experimental results show that the designed system can satisfy the application expectation,and have a certain practical and reference significance.