Smart home is through the use of advanced computer, communication and control technology (3C), establish a home security system, network service system and home automation system consisting of a family of integrated services and management of the integrated system, in order to achieve full protection, facilitate communications and comfortable living environment of the family residence.
Smart home is a multifunctional technology system, which includes Visual interphone, domestic security, household premises distribution system, lighting control, household appliances control, remote video monitoring, sound listening, family of audio and video systems. Home intelligent contains more current domestic products have a bus system, power line carrier, wireless, etc., in network connections, are basically using the bus system network, telephone network or via Ethernet.
Home intelligent Terminal effect manifested
Compared with ordinary home, smart home not only with traditional live features, providing comfort and safety, high quality and pleasant living space, also from the original passive static structure into a dynamic, intelligent tools to help keep the family and external information sharing, optimizing the way people live, even for a variety of energy expenditure savings. Its fundamental goal is the home of information-related communications equipment, home appliances and home security devices, by wire or wireless means, to connect to a family of intelligent systems for centralized or offsite monitoring, control and management of the family, keep these transactional, family facilities and the residential environment of harmony and coordination.
As the community at the heart of intelligent systems, intelligent home system through its core device — to implement intelligent Terminal family home intelligent functionality. Home smart terminal is the heart of intelligent home, through its realization of the system of information gathering, information, inputs and information output, centralized control, remote control, linkage control functions. It features typically include home security, video intercom, remote meter reading, household appliances control, home information services, value-added services, etc.
Smart home platform system technical characteristics
Smart home network with integrated technology, communication technology, interoperability and wiring standards implementation and continuous improvement. It involves all of the family network's intelligence apparatus, equipment and systems operations, management, and integration technologies. The performance of its technical characteristics are as follows:
¡Ó adoption home gateway — family intelligent Terminal and system software to build smart platform system at home. Home gateway is the core of intelligent home LAN, mainly through the family network of different communication protocols between the conversion and information sharing, as well as with external communication network between data exchange function, at the same time, the gateway is also responsible for family smart device management and control.
◇ Used computer technology, micro-electronics technology, communication technology, intelligent Terminal (home gateways) family of intelligent, integrates all the functions of the smart home built on a unified platform. First of all, the implementation of the family network and the external network data interaction between; Secondly, to ensure recognition of instruction transmitted over the network are legal directive, instead of "hackers" from illegally invaded. Therefore, the family is not only a smart terminal transport hub of family information, and information of the patron saint of the family.
◇ Through external expansion modules implementation and Internet appliances. To achieve domestic appliances of centralized control and remote control features, home intelligent gateway by wire or wireless means, in accordance with the specific communication protocol, with the help of an external expansion modules control electronics or lighting equipment.
◇ Embedded system applications. In the past, the vast majority of home intelligent interruption by the microcontroller. With new features and performance enhancement, processing power significantly enhanced network functionality of embedded operating systems and software procedures that control microcontroller made the appropriate adjustments to organically combine into a complete embedded system.
Smart home platform systems technology development trends
Hardware platform can handle growing
Early intelligence controller with 8-bit microcontroller as a core processing unit, the function is relatively simple and pure. Often only have security, three tables collection, simple text information publishing and simple appliance control function. This period of product operation interface humble, household appliances control, advanced features are also limited to demonstrate concepts. Typical products are the National Chiao Tung University NDT100, NDT200, Singapore Bolo by 8XE.
Next, many manufacturers to make their products more comprehensive, display more beautiful, more powerful microcontroller or use more than one microprocessor work together. This period of product operation interface is relatively large, often using color LCD, mostly with touch function, integrates building intercom functionality, household appliances control function is relatively rich. Typical products are the National Chiao Tung University NDT300, star's smart Wang, Keri's future home.
Currently, there are a number of domestic and foreign manufacturers use 32-bit processor, combined with advanced embedded development platforms, the development of more advanced products. Based on this technology, product processing capabilities significantly improve, in the past will not be able to handle multimedia information and value added services can be achieved. Due to the use of specialized display engine, so the interface more rich, beautiful, household appliances control function is also more complete. Typical products are the wave of BC2-D05D, Samsung's 8170.
Security, intercom, subsystem becoming an integrated platform
Original intelligence controller often independent of the traditional security and intercom systems, users of home you need to install several separate subsystems, which increases the complexity of the installation and use. Industry technology integration between promoting smart home platforms become including security, intercom, information, digital appliance control, home entertainment for the integration of intelligent home platform.
Analog digital transformation step by step
As analog television to digital television, analog phone number toThe gradual shift in Word Mobile, intelligent home platform is experiencing a simulation to the digital revolution. Digital technologies are increasingly applied to smart home systems, mainly in the following areas:
◇ In circuit design using more and more digital integrated circuits. Now the smart home products have a high number of digital devices, the integration and reliability than analog circuit before has been greatly improved.
◇ Display digital has greatly enhanced the display effect. Digital display of technical difficulty and costs are relatively high, except for a small number of manufacturers to adopt this display technology (such as Samsung's 8170), most manufacturers mainly using simulation or half-simulation (such as a wave of BC2-D50D). With display technology matures, it will be more and more manufacturers are used.
¡Ó transmission gradually moving towards multi-network, security, intercom and access control, meter reading gradually moving towards a unified Ethernet connection. Multi-network will dramatically reduce the complexity of construction and maintenance, and improved transmission reliability.
From Wired to wireless
Wireless transmission characteristics is flexibility, mobility and scalability is wired transmission mode is not available. But wireless technologies need to address the challenges. Such as: how to make the transport distance as far as possible, and avoid damage to people, and how to avoid signal interference? how to improve the transmission bandwidth in order to be able to transmit more complex data?, and so on. Despite these issues to technical Rd staff continually go into innovation, but believe from Wired to wireless general trend cannot be reversed.
Intelligent module technology development trends
Intelligent module is a smart home platform execution units and control Terminal, and intelligent control system is an organic whole. Smart module by wire or wireless means and smart to accept in the controller in the controller's centralized control directive, together with the controller in the entire platform of intelligent home system.
Wireless networking mode will become the mainstream
The first intelligent module using a wired connection, usually in advance of the bus or power line transmission of control signals. Remote control functions via wireless or infrared access point, bring remote control instructions into the wired control instructions transmitted to the managed smart module. The following are two common wired control intelligent switch technology:
Bus switches: technical features of the programme is the strong electric and electronic separation, the entire system in one (or more) of the wireless access point to unify receives wireless signals, signal through pre-bus to transfer the control signal. System uses the ELV separation mechanism system more stable, strong adaptability of load, but its disadvantage is the need to pre-control line, the need for auxiliary equipment, difficult to install, hard to debug, difficult to maintain, often after a system failure will cause the entire system crashes. On behalf of the manufacturer has APBUS ABB, Clipsal, and e-House, etc.
Power line carrier programme: the Programme originated in Europe and the United States in the 1970s, in Europe and more. It usually has one or more direct access to the strong power of wireless access points, through the exchange of strong electricity as a carrier transmission control signal. The disadvantage is that the control signal directly in the strong electricity network transmission, unstable extremely vulnerable to outside interference, in the application shows great diversity of regions, in particular China's current network interference is relatively large, but China is now a large number of household appliance manufacturers of household electrical appliances not normative more to increase the programme's instability, but has the advantage of wiring simple. On behalf of the manufacturers have X10, Swiss francs, Sobolev, etc.
While wireless smart module is biggest advantage is installed very convenient, with particularly strong splits can better adapt to a variety of application environments. Every smart module is a wireless access point interfering with each other. Following a single fire wireless smart switch, for example, its installation is fully equivalent to a normal switch. With the increasing development of wireless technology, I believe it will have more manufacturers use wireless.
DIY market intelligence module product development
Previous smart module only with domestic intelligence centers comprise a set of smart home solutions, this is often a large full-system, price is more expensive. Intelligent module cannot be used independently from the system, it also makes smart home just a few rich people enjoy luxuries. But as the concept of smart home is becoming increasingly popular, majority of ordinary consumers also exists with the same consumer demand, the smart module must install, maintain and use are simple, and no longer rely on intelligent home and home of the central system into a system. The current foreign smart home products are being split into a pure module in supermarket sales. This trend appears to be completely done big smart home market and causing a revolution.
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