With the upgrading of consumption and technological innovation, the development of smart home will become faster and faster. The huge dividend space also drives the R&D investment of related companies in this area. The strong support of capital and the catch-up of the feng shui are the solid backing of the development of the smart home industry .
"Now China's smart home technology, such as technology, product and human interaction technology, is not a big difficulty, the most important thing is how to break through the application scenarios, the life-saving application scenarios and increased technology. When combined, how can we adapt to each consumer more and be more life-oriented and more systematic, it takes time to cultivate.†Zhou Yunjie, president of Haier Group, revealed in an interview. The perfect combination of scene and technology is inseparable from the following subsystems.
1, smart home wiring system
The smart home wiring system is a small integrated wiring system. It is a transmission channel that supports voice/data, multimedia, home automation, security and other applications. It is the basis of a smart home system . It can be used as part of a complete intelligent community integrated wiring system, or it can be completely independent of a comprehensive wiring system.
2, home network system
The home network is a new technology that connects PCs, home appliances, security systems, lighting systems, and wide area networks within the home. In recent years, the function of the home network has been expanding, and it has begun to involve family work, online shopping, telemedicine, health care, online schools and training, old and young, employment, games, leisure and so on. The development of the national home network market is based on the development of the home broadband market, and keeps pace with the development of the broadband market. It maintains almost the same rate and is growing rapidly.
3. Smart home control management system
Intelligent management control refers to the construction of a building, network communication, information appliances, equipment automation, and a system of efficient, comfortable, safe, convenient and environmentally friendly living environment that integrates architecture, structure, service and management. Various devices are connected together to provide various functions and means such as home appliance control, lighting control, curtain control, telephone remote control, indoor and outdoor remote control, anti-theft alarm, and programmable timing control to help the family and the outside maintain information exchange and optimization. People's lifestyles help people to arrange their time effectively and enhance the safety of their home life.
Small computer system interface (SCSI) is an independent processor standard for system level interfaces between computers and intelligent devices (hard disks, floppy drives, optical drives, printers, scanners, etc.). SCSI is an intelligent universal interface standard.
1. SCSI can support multiple devices, SCSI-2 (fastscsi) can connect up to 7 SCSI devices, and widescsi-2 can connect 15 SCSI devices. In other words, all devices only need to occupy one IRQ. At the same time, SCSI also supports a wide range of devices, such as CD-ROM, DVD, CDR, hard disk, tape drive, scanner, etc.
2. SCSI also allows one device to transfer data and another device to look up its data. This can achieve higher performance in multitasking operating systems such as Linux and windows NT.
3. SCSI occupies a very low CPU, so it has obvious advantages in multitask system. Since the SCSI card itself has a CPU, it can handle all the transactions of SCSI devices. When the host CPU sends work instructions to the SCSI card, the SCSI card will work by itself. After the work is finished, the work results will be returned to the CPU. In the whole process, the CPU can carry out its own work.
4. The SCSI device is also intelligent. The SCSI card can queue CPU instructions by itself, which improves the work efficiency. In multitasking, the hard disk will be in the current head position, and the adjacent tasks will be completed first and then processed one by one.
5. The fastest SCSI bus has a bandwidth of 160MB / s, which requires the use of a 64 bit 66MHz PCI slot. Therefore, the maximum speed that can be achieved in the PCI-X bus standard is 80mb / s. if it is used with a dedicated hard disk with 10000rpm or 15000rpm, it will bring obvious performance improvement.
SCSI-180°DIP Section
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