Research And Application Of Home Control System With Hybrid Network Based On Sub-GHz

With the continuous progress of the era,people’s demand for smart home is increasing,putting forward higher requirements for smart home network.At present,short-distance communication mainly uses wireless technologies such as Wi-Fi,ZigBee,Sub-G and Bluetooth,but all of them have some defects more or less.Moreover,the current smart home products do not have a unified wireless communication protocol,which causes a certain obstacle to the popularity of smart home.In this paper,a hybrid networking scheme is presented,and combined with the home control system,a home control system based on Sub-GHz hybrid networking is designed.In terms of design and implementation,it can be divided into three modules:Sub-G module,software and hardware control module and mobile phone client module.These three modules are respectively responsible for the transmission of home local data,data interpretation and forwarding between local network and remote network,and the transmission of control information between users and home gateway.Aiming at the problem that Mesh networks have high requirements for networking node equipment and high prices,a three-layer inter-layer communication structure is designed based on Mesh networks.A star network topology is formed between the first layer and the second layer,and a hierarchical wireless network structure is formed between the second layer and the third layer.The network structure is simple and the equipment requirement is low,which are suitable for the network communication of terminal equipment.Aiming at the problem that it is difficult to take the equipment cost,power consumption,communication distance and smart control of mobile phones into account with a single communication technology,the system combines the home wired network,Wi-Fi network and Sub-G network to form a mixed control network.The servers and mobile phone clients are designed to realize the control of home devices through smart phones.Aiming at the problem that there are a great variety of home devices that it is difficult to integrate into one system,a new exclusive upper layer protocol is designed to realize the communication between networks by learning and referring to the existing protocols.The protocol defines the communication rules of the lighting system and air conditioning system,and reserves extension bits for future system upgrade.The system is stable and has reliable performance after extensive development and testing,which can meet the requirements of practical use in the home,and has the characteristics of low power consumption,simple use,strong expansion ability,low cost and so on.