【 Weak current College 】 intensive internal anatomy of the smart home

In a smart home network, including those devices, and intelligent technology? home network and IT technology links main? on those sectors and enterprises affected? let us walk into an internal smart home example.

Network: smart home skeleton

Previously we've covered before, smart home is through unified network bus and control platform family of electrical equipment and lighting control systems, security control systems, energy management systems integrated. Current smart home development trend is centralized control to distributed control, compared with centralized control, distributed control not only to reduce the wiring, and to improve the reliability of the system, when a node fails, the node is removed from the network, and the other nodes are not affected.

Intelligent home control network consists of several parts:

1. Bus Coupler (BCU-BusCoupleUnit)

This is the home appliance/device is connected to a network of key part of the network of bus and the link between household equipment. Its main role is in the BCU information exchange between the household equipment signal gets (enter) or control signal output. BCU on information handling, and determine whether the information to the bus or other BCU for shipping. In addition, since each BCU can connect many household devices, it also needs to determine the source of information.

2. the appliance control signals from the driver section

BCU regardless of input-driven voltage or current output drive capability is very limited, driving part is to be output control signal BCU "zoom in" enough to drive home appliances, it should also be weak signal will enter the "zoom in" to be recognized and receive BCU.

3. household appliances

This is a smart family actual use of the device. It is used with the current family of devices is: they are more flexible, and can be configured and BCU connection of the interface. Generally only the on/off status of household equipment (such as a microwave oven, rice cooker, etc.) do not have to do too little big change; and the original with a variety of functional regulation of household equipment (such as TV, adjustable volume, channel; air conditioning adjustable temperature, wind direction and direction; audio system, adjustable volume, tone and wrap up, etc.), by household equipment manufacturers do a big change, that is, each household appliances should be increased by one and BCU connection interface so that you can receive the signal from the control of the BCU (to replace the original remote control function) and sent out to the BCU your work status signal for monitoring.

4. universal remote control

In a smart home control network of any household devices only need to pass a unique remote control, you can implement on their control and monitoring. This means not only can you control the household equipment such as device restart/shutdown, work status and parameter changes, etc., can also be monitored by remote control, for example, see the indoor temperature, view the bathroom lights are off, the water heater is also heating …. That is, the remote control and home appliance information exchange can be bi-directional, and now the home of the remote control only functions with unidirectional control, rather than the reverse of the monitoring function.

5. telephone interface

Here is the telephone interface and remote control of home, with a marvelous is the remote control is the home of close control and surveillance, telephone module allows telephone/mobile phone at a distance for control and monitoring.

6. home gateway

Home gateway is a smart home network is an important part, it is a single home network and the outside world (such as LAN, Internet or intelligence community child network) communication of critical parts. Home gateway settings, like the current computer as a network, you can browse to the Web sites of various information, you can transmit/receive Email, but also through the remote has been connected to the Internet computer to control and monitoring of the various devices in the family.
Technology: smart home of nerve

In a perfect digital home, will reflect the current variety of high technology integration. As to constitute a real sense of intelligent home, must be the subject of cross-cutting technology. So if you want to build a truly functional home, need more trade, various vendors to support IT.

Intelligent Home system mainly includes the following technologies:

1. the computer software technology

In digital home networks involving computer software, in addition to the general user programs, most notably has two aspects: first, the network operating system, the operating system should have accounted for storage of small, easy to use, flexible configuration, fault tolerance, performance, and other characteristics; the second is the data structure, this is due to a general family control network, it is not possible to use a variety of bulky database, but when you need to actually use dealing with large amounts of data, so you need a designer to design a suitable home network use of the database.

2. computer network technology

Here is more prominent in home gateway, such as Internet or Ethernet access, route selection, browser design, website production, in addition to encoding compression technology and network interface technology.

3. computer cryptography

Digital home network and the external network to the user great convenience. But it's also has its disadvantages, "hacking" a class of uninvited guests will not come. In order to protect users ' rights and privacy are not infringed, you cannot allow unrelated persons unauthorized intrusion into the private home networks. The solution is to use various encryption/decryption technologies.

4." Plug and play technology

This is the special requirements of the home network, that is, the technology requires network automatically "feel" and "identify" the new online home appliances/equipment, and on their implementation of control and monitoring functions. To complete this feature not only household appliances/equipment to make certain changes (increase in the corresponding interface), also called network operating systems have such capabilities. In order to achieve this functionality, first standardized/standardized interface protocol and device files, followed by the network operating system should have complete agreement last controller (such as the remote control) should automatically reorganized system control logic. So you want to implement this feature is not an easy task, currently abroad has not standardized mature programme launch.

5. image processing

Image processing technology is part of information technology in a relatively high technology, it also has to go into the digital home. One of the most typical example is the intelligent security door, this door is not needed for normal keys, it's "key" is the family each person himself of an organ features: for example, fingerprint or face close-up, or iris of the eye. The body's own characteristics, first of all need some dedicated devices they are collected, and then on the acquisition of necessary image information processing, and extract the corresponding need for features, based on these characteristics to identify "is a member of the household". In such a system, the most critical and most important technology is: in the shortest possible time, on the acquisition of information for rapid processing and extraction out enough to make the correct identification of the characteristics, and this is the image processing is one of the core technology.

6. sensor technology

In a digital home, in order to ensure perfect control, measurement of physical quantities required are varied (e.g., flow, power, temperature, humidity, trace gas content, etc.), this requires a sensor technology. In General, the family of physical quantities measurement accuracy is not high, measurement device size and weight are not demanding requirements, therefore also need to research and development to adapt to a home network controlling prices low, stable, reliable and versatile integration of measurement and sensor technology and the corresponding products.