The earliest function of home is to provide shelter from wind and rain and safety protection for human beings. With the continuous improvement of human ability to transform nature, the corresponding requirements for home are also increasing. People expect that the home they live in can continuously meet their requirements of comfort, safety, efficiency and convenience, and the realization of these requirements directly needs the support of new technology-network technology.
With the advent of the information age, network technology is no longer a patented technology in the fields of industry and telecommunications, and it has gradually entered the families of ordinary people. Family security system, lighting system, environmental control system, home appliance control system, DVD and MP3 family entertainment system and family distance education system are all new functional requirements for home in the information age. All these functions need to be realized by the rapid development of computer technology, automation control technology and modern communication technology, and the transmission form of information is digital code, so the home environment with the above functions is generally called digital home. With the above-mentioned home automation network system, people can conveniently access all kinds of information in the home through computers or other network devices, including the readings and expenses of various meters, the status of various household appliances and monitoring equipment, and realize remote control of various household appliances and devices, and energy management at home. All these have greatly improved the quality of human life, and it is also the life goal pursued by human beings. The earliest network technology network technology realized its communication function through special communication lines, including telephone lines and twisted pairs, which need to be laid and installed in advance. This communication medium is widely used in many occasions, mainly because it is convenient to realize. However, networking in places that are difficult to wire, dangerous or need beauty, such as remote office places, historic buildings, office places without ceilings, unsafe production spaces, etc., is difficult to achieve, such as communication equipment needs to be moved or communication lines cannot be laid, and aesthetic requirements, etc. At this time, wireless network technology has to be considered.
people's demand for wireless system is increasing, mainly because it is convenient to design, and the installation and operation cost is lower than that of wired technology, so it can be installed and operated quickly. At the same time, the biggest advantage of wireless network technology service is that it can provide access services for mobile users, and in some cases it is equally attractive to stationary users. The media of wireless technology include infrared and radio frequency. Generally speaking, its implementation cost is slightly higher than that of wired network technology, which is mainly used for the conversion and processing of communication signals. However, with the rapid development of communication technology and large-scale integrated circuit technology, its realization cost has gradually become competitive with wired network technology, and its application scale is constantly expanding. It is very obvious that the proportion of application and demand of wireless network technology is rising, while the proportion of wired network technology is declining, which is a general technical development trend. 1) Receiving and saving information: through the home network, the owner can conveniently receive and send e-mails, browse all kinds of online information, subscribe to all kinds of electronic journals or magazines, etc.
2) Manage the financial situation of individuals or families: through the home network supporting management system, the owner can easily check his various accounts and income and expenditure, and the management system software can also make the optimal income and expenditure plan according to the personal economic situation and provide corresponding reasonable suggestions and tips;
3) Manage the communication needs of the family: manage the communication of various communication devices in the family, including the implementation of network communication protocols and the allocation of network resources, so that the information transmission on the network is unimpeded and the whole family network system runs normally;
4) Manage the use of power supply and equipment: This aspect is also one of the main functions that digital home should have. Similarly, through the network management system software, it monitors all kinds of equipment in the home, such as the control of lighting in the home, the remote control of electrical equipment, and the optimal adjustment of indoor environment. At the same time, it can also provide some economic optimization decision control, such as providing a safe and reliable environment according to different electricity consumption periods and peak and valley electricity charges (p>5): by installing various detection and alarm devices in the home, family security, fire fighting and other needs can be realized. For example, by installing a camera, you can monitor the surrounding environment of the room and special places such as the nursery; Through smoke sensor, temperature sensor and special gas sensor, prevent room fire and excessive harmful gas; By installing alarm devices such as infrared sensors, door magnets, film window grilles and wireless microwaves, thieves can be prevented from invading. 6) Maintenance-free operation: All kinds of equipment in the whole family are connected to its network, and the monitoring and fault diagnosis functions of the equipment can be realized through the management software running on the network. Once a fault occurs, the home management system will give a fault prompt, and automatically guarantee the corresponding maintenance unit through the inter-network interface equipment in the home, without the owner's hands; Connect the signal transmitted by the home security computer with the owner's mobile phone or office computer, vehicle-mounted office computer and anti-theft center. If there is an accident or someone forcibly enters the house, the owner and the anti-theft center will receive the alarm model at the first time, and the owner will cooperate with it. In the future, it will develop the satellite JPS positioning function. Of course, the price is quite high.
7) Simple operation: Because the network system is used in thousands of households, considering the differences of users' age, occupation, experience and education level, the operation of this kind of system must be simple, convenient and reliable to meet the needs of different users.
8) It can be customized according to personal or family life style: with the advent of the information age, the requirements for personalization are constantly improving. In the future, digital home should be able to be configured and adjusted according to different users' home environment, number and type of equipment, and lifestyle, for example, corresponding system solutions can be customized according to consumers' needs and acceptable expenses; Another example is to adjust indoor environmental parameters, start and stop household appliances regularly and so on according to users' living habits.