The Design Of Intelligent Home Monitoring System Based On Wireless Local Area Network

Recently,technologies,such as sensors,internet,communication and information,have been developed rapidly.People put forward higher needs of intelligent home life.Under this background,the intelligent home has been presented.As for the intelligent home,several household appliances are connected through the internet.Meanwhile,people can implement remote control for these appliances.However,appliances manufactured by different companies have different interface types.In other words,it is rather different to connect these appliances together.Therefore,the current systems have disadvantages of fragmented function and poor extensibility.Thus,designing a system with strong extensibility and broad coverage has strong applied value.The main work of this dissertation has been summarized as follows(1)We construct the circuit of the intelligent home system.Since most of current appliances have the WIFI interfaces,we select the WIFI protocol for data communication.For construct the intelligent home system,we select STM32 F103 RET6 as the main control chip.The HD camera of H.264,the combustible gas sensor of MQ-2,and HC-SR501 module are adopted as the data collecting node.These sensors can provide images and data of the monitoring area,which can be used simulate the Intrusion monitoring and gas monitoring of the intelligent home.The main control chip is used to control the sensors and data communication.We also design the circuits of these nodes,such as sensor peripheral circuit,the WIFI module and power supply voltage.Using these circuits,we can collect the data of the sensors,and communicated nodes of the network.(2)We design the monitoring system with the STM32 chip.The system selects the Keil SDK and VC++ as the development environment.We design several programs for different nodes of the network.Use these programs,we can collect the image,combustible gas and infrared information of sensors.For monitoring,we develop the monitoring software,which can be used to monitor the environment of the the intelligent home system.Based on the functions of different nodes,we use the class of Socket to realize the information communicating between computer and hardware.The monitoring system can display the information of nodes by image and data,which are come from sensor of video,infrared and combustible gas.The testing and experiment results show that the system of intelligent home monitoring system based on wireless local area network can monitor the potential security problems such as flams,illegal invasions,and flammable gas.The presented system has advantages,such as good versatility and strong extensibility.It can satisfy the need of the intelligent home monitoring.