With the rapid development of economy and science and technology, especially the rapid development of information and Internet technology, it brought great influence on people's life style, changed the human way of thinking about things and way of life, people in order to adapt to the trend of The Times, the development of creative many artificial intelligence products, such as in the running of the household, many experts and scholars at home and abroad and the research institutions gradually from the aspects of intelligent LouYuChao intelligent household development, the concept of smart home, the resulting
Because the United States in the higher education level and the level of scientific research and technology leads the world, under this background, the smart home as early as in the United States was born, and in the smart home gateway has played a key role in the household of a variety of intelligent devices are connected to the Internet through it, household intelligent device instructions are almost made by it, and the cohesion between the equipment is not need user operations, to be able to communicate to achieve, so the user management household is more convenient, quick, the present is the information intelligent era, there emerged many intelligent electrical equipment on the market, such as smart sockets, intelligent water heater, intelligent curtain, etc., intelligent home gateway can with these intelligent electrical equipment connectivity, users can indirectly through the gateway management household equipment, allows users to manage the housework is both convenient and save Labour, this for the moment so fast rhythm of life people provides a more convenient and comfortable way of life,
1.2 smart home gateway research status at home and abroad
1.2.1 abroad and the research status of smart home gateway
Around in the 70 s, some developed countries abroad, puts forward the concept of smart home gateway, after these countries successively put forward its own set of smart home research standards, but product standards is different, lead to various products can not compatible with each other, a serious impediment to the development of the household market, with the development of recent decades, the development of smart home gateway gradually mature,
SmartThings in 2014 produced a named SmartThings central organ, the central unit contains ZigBee, Z - Wave, wireless devices, power supply, Ethernet module, etc., generally the center also need to configure a few corresponding plug-in, multifunction sensor, accelerometer, thermometer, etc.,
1.2.2 the domestic research status of smart home gateway
Although the intelligent household in China starts late, but has developed rapidly in recent decades, the technology is also gradually mature, smart home at the beginning of the domestic is mainly applied in intelligent residential area or intelligent building, with the progress of technology and the pursuit of more comfortable household life style, gradually toward the development of smart home control system,
In recent years some companies in China put forward some family gateway using multi-agent platform technology, such as P2P based on SIP protocol family gateway and embedded gateway based on RS - 485/CAN bus, which is based on the SIP gateway though CAN solve the problem of mixed terminal access, but application is more complex, and for the RS - 485/CAN bus embedded gateway, it CAN though and different bus and Internet connection, indirect implementation for control and monitoring of electrical appliances, but the node connection is not convenient, cause the wiring trival,
1.3 the problems and development trend of intelligent home gateway
1.3.1 the problems existing in the smart home gateway
Although smart home has been for decades, from concept to practice in the market of smart home industry is also in full swing, but intelligent household products still exist many problems, at present, the home gateway is facing the challenge of the following:
1) family network address problems, many intelligent electrical equipment in smart home the need to provide business, in order to facilitate the management of the business and equipment configuration, tend to use the IP address of the easy to identify, due to the current technical problems, lead to IPv6 is not perfect enough, the use of the general still is IPv4, then will be another question - NAT through,
2) ability to QOS problem, smart home gateway need to deal with a variety of different tasks at the same time, so the real-time performance of the gateway and the QOS ability request is very high, if you can't handle various business scheduling well, there will be a serious mistake,
3) security issues, in order to better serve customers, manufacturers of smart home gateway typically add the function of remote monitoring to the gateway, the user can use the office computer or notebook computer or use a smart phone with Internet connection to the gateway, to send corresponding instructions to remote management household gateway, but the gateway connected to the Internet, there will be a hacker invasion and attack the problem, there is a big security hidden danger,
1.3.2 the development trend of intelligent home gateway
Along with the advance of science and technology and people's living standard, people begin to pursue a more comfortable way of life, it will be for intelligent home gateway play a huge role in promoting the development of the market, the future smart home gateway will develop in the following several direction:
1) more information gateway, with the development of information technology, the user can through smart home gateway to send and receive E-mail and reading electronic documents,
2) management more intelligent household, the gateway to the home Curie various intelligent electrical equipment connected to the Internet, and the fault detection can be installed software, software to self to test the fault, where if the test failed, the software can dispose malfunction, need no longer be solved user manual,
3) housing is more secure, and in the future home can install various detection alarm device, for example, can install smoke gas, temperature and so on various sensors, in addition to the window and door can install infrared and magnetic induction alarm device, the network can send the alarm information to the user's smart phone, can remind users to take corresponding measures,
4) the operation more simple and more environmental protection, in the design of the future of home gateway will use more convenient, reliable operating system, at the same time in order to save resources, in terms of household electrical appliances should take more optimal control strategy of home appliance equipment, reasonable management to achieve the purpose of saving resources,
1.4 the paper content arrangement
The first part is introduction, mainly tells the story of this topic research background and significance, the research status of smart home gateway, smart home gateway existing problems and development direction, and tells the story of the innovation of the thesis and thesis structure,
Overall design, the second part is the gateway to analyses the functional requirements of smart home gateway, after the overall structure and composition of intelligent home gateway module are introduced,
The third part is the gateway of the hardware design, the design of smart home gateway hardware overall architecture, based on this architecture is analyzed and designed the core plate of the basic hardware circuit and the periphery of the smart home gateway function module interface circuit,
The fourth part is the gateway software design, mainly to the operation of the smart home gateway system, STemWin and LWIP protocol stack for transplantation and clip, as well as the gateway for debugging, and realize the function of smart home gateway part,
The fifth part is the summary and prospect, mainly to this article the research summary and outlook for the next step,
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