Design Of The Smart Home System And Anti-Lighting Protection Research

With the rapid development of science and technology, computer technology, communications technology, control technology, and other technologies have scored amazing achievements. Network Age and Digital Age come. All kinds of intelligent products begin to emerge in people's daily life. With this major historical trend,Smart Home rises rapidly in recent years,and cause a revolutionary change about Smart Home.Smart Home is a huge project.It relates to computer technology,network communication technology, microelectronic technology,fieldbus technology,integrated wiring technology and some other frontier technology.This paper takes Smart Home system as its research object.On the basis of electric,control, information, and other relevant theory,it mainly introduces the researchs and designment of Smart Home system based on CAN field bus.The system ,based on SJA1000 and AT89S52,have following functions such as collecting and processing data,controlling executer and so on.And the feasibility of CAN fieldbus technology's using in Smart Home is verified.Lighting is a potential hidden trouble in this system.So, this paper researchs the strategies on anti-lighting of CANbus based on the low-voltage electronic systems, making the system hign quality of safety.Firstly, the background, significance and condition of study at home and abroad are given.This paper analyze the concept and the basic function of Smart Home.On this basis, the design model is stated ,and the advantage and disadvantage of the mainstream Bus Protool used in Smart Home are analyzed and contrasted,and CAN fieldbus is selected. Secondly, the concept,the character and the frame of CAN fieldbus and the frame of CANopen are given.Moreover,it introduces CAN fieldbus control chip-SJA1000 including its functions,structure ,parameter assignment. Finally, based on AT89S52 and SJA1000,the paper describes the design of software and hardware of smart node and controller. By connecting with three meter systems and alarming systems, Smart Nodes achieved a data acquisition and the controller achieved data transmission and control function.And, the design achieved the goal.There are some disadvantages in electronic devices,for example:hign compact integration,low operating voltage.This paper analyzes the parameters of lighting and designs the protection means,making the whole system more safe.CAN fieldbus has lots of technical advantages , relatively simple application and lower development costs compared with other bus.So, the cost-effective development of the Smart Home system designed in this paper is high. The people with low income are majority in china and consumer groups is huge,so this system has a very broad application prospects.