| With the development of technology and wireless sensor network technology,various intelligent electronic products are widely used in people’s life.High-tech and intelligent technology from intelligent building to residential home users,home intelligent technology has become a frontier technology topic.In particular,wireless sensor network technology is continuously developing,and wireless network technology is referred to the smart home system.The development of smart home system is further promoted by overcoming the disadvantages of complicated wiring and energy consumption in traditional household system.This paper starts from the user experience and basic functional requirements of the home system.A smart home system based on wireless sensor network for information collection and monitoring of temperature,humidity,fire and gas is designed.Firstly,the research background and domestic and foreign research status are analyzed.Comparing several typical wireless communication protocol of existing technology,combined with the advantages and disadvantages of several kinds of technology,low power consumption,ad-hoc network capability is strong,simple to use,high stability,ZigBee technology as wireless communication technology within the household.The characteristics of ZigBee technology,network topology architecture and various layer protocols and data transmission are analyzed in detail.According to the communication requirements of the home system design,the star topology is selected and the overall architecture of the intelligent home system is designed.The STM chip is selected as the main controller of the system,with CC2530 as the main chip of communication node in the home system,and the nodes communicate through ZigBee technology to form a small family LAN.Design the specific function of the sensor node,responsible for the monitoring of the home environment of temperature,humidity,fire and gas.In this technology to design of system software,combined with the 3 g and public communication network node can through the remote access to the Android mobile phone client software,form of smart home system based on wireless remote control.The design of this system is based on sensor node,smart home gateway and mobile phone terminal.The following functions are realized through design:1.Realization of the internal network of smart home system;2.Users can conduct environmental monitoring through the home gateway;3.Users can remotely monitor the system via a smartphone.Finally,the system is tested for signal receiving strength and energy value test,and the communication quality is verified.The test results show that the system is stable and can meet the expected design goals and users’ basic needs. |
