IC200MDL730E1. Project background
The smart home control system is based on the smart home system as the platform, home appliances and home appliances as the main control object, the use of integrated wiring technology, network communication technology, automatic control system, audio technology and other facilities related to home life for efficient integration, improve home intelligence, safety, convenience and comfort, bring great convenience to our lives. With the rapid development of Internet of Things technology, the resulting smart home has become the leader in Internet of Things technology. Smart home is a sunrise industry that has gradually developed with the improvement of people’s living standards. Its appearance brings great convenience to people’s life; At the same time, the emergence of smart homes has also led to a large number of economic industries. For the traditional smart home, the function is relatively single, and can not effectively interconnect various home appliances; In addition, the traditional smart home generally uses the wired way for networking, networking is inconvenient and maintenance is not easy.
2. Introduction of works
In this paper, a ZigBee-based smart home control system is deIC200MDL730Eigned, which cleverly uses one of ZigBee’s advantages – AD hoc networking function, and completely avoids the traditional networking mode. ZigBee technology has the advantages of simple networking, convenient networking, and large networking capacity. The intelligent control system effectively combines ZigBee technology and home intelligent gateway technology. MYD-YG2UL is the processor of the intelligent gateway, and a Linux system is embedded in MYD-YG2UL, which is a highly integrated gateway system, so as to carry out local and remote operation of home equipment, and truly realize the intelligence of home appliances.
3. System block diagram
This project attempts to build an integrated, real-time control smart home, which can be used in ordinary residential households, large, small and medium-sized shopping malls and industrial fields. The following figure shows the interconnection between home smart devices and terminal systems. As a control terminal, MYD-YG2UL is directly connected with furniture intelligent devices and is connected with sensing devices. At the same time, MYD-YG2UL is connected to the cloud as an endpoint, providing the cloud with the operation of furniture intelligent devices and recIC200MDL730Eeiving cloud control commands. Remote terminal devices can query and control home smart devices in real time through the cloud.
The overall framework of the smart home system solution proposed in this paper is shown in the figure. After technical demonstration and architecture analysis, it is decided to divide the system into three subsystems: ZigBee wireless sensor monitoring subsystem, gateway subsystem and monitoring subsystem. The ZigBee wireless sensor monitoring subsystem collects data through each sensor node, transmits the collected data to the routing node through the wireless network system, and then transmits the collected data of each terminal node to the coordinator through the routing node, and the coordinator exchanges data with the intelligent gateway to complete the transmission of data. Users can remotely check a variety of environmental information at home and grasp the latest developments at home in real time. Gateway subsystem has two functions, one is to connect Ethernet; The second is equipped with a camera to collect video data and implement remote monitoring. Intelligent gateway is the core of the whole smart home system, coordinating the normal operation of each subsystem.
4. Detailed design
The system provides the function of online viewing security monitoring data, collects data through multiple sensors, builds wireless local area network, synchronizes the information of each sensor in real time, and realizes the all-round security monitoring and alarm function; At the same time, a Web server is set up for users to remotely view monitoring information.
4.1 ZigBee wireless sensor monitoring subsystem
ZigBee protocol provides a wireless LAN solution for smart home environment monitoring. The coordinator node can obtain the environment information of each terminal node in real time and transfer it to the user in real time for the user to check. The routing node is used for the secondary transmission of the terminal node and plays the role of information transmission. The terminal node is used to collect environmental information through various sensors, determine whether the collected information reaches the threshold of early warning and alarm, and whether to perform corresponding actions. The information data specified by the user is transmitted to the terminal node through the router, and finally to the user to facilitate the user to understand the environmental information.
