Home Automation
Home automation (also called domotics) is a field within building automation, specializing in the specific automation requirements of private homes and in the application of automation techniques for the comfort and security of its residents. more...
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Although many techniques used in building automation (such as light and climate control, control of doors and window shutters, security and surveillance systems, etc.) are also used in home automation, additional functions in home automation include the control of multi-media home entertainment systems, automatic plant watering and pet feeding, and automatic scenes for dinners and parties.
The main difference between building automation and home automation is, however, the human interface. In home automation, ergonomics is of particular importance: the control should be largely image-based and self-explanatory.
When home automation is installed during construction of a new home, usually control wires are added before the drywall is installed. These control wires run to a controller, which will then control the environment.
Standards and bridges
Specific domotic standards include INSTEON, X10, KNX (standard), System Box, LonWorks, Crestron, C-Bus, Universal powerline bus (UPB), UPnP, ZigBee and Z-Wave that will allow for control of most applications.
Some standards use control wiring, some embed signals in the powerline, some use radio frequency (RF) signals, and some use a combination of several methods. Control wiring is hardest to retrofit into an existing house.
Some appliances include USB that is used to control it and connect it to a domotics network.
Bridges translate information from one standard to another (eg. from X10 to EIB).
Effects
In extreme installations, rooms can sense not only the presence of a person but know who that person is and perhaps set appropriate lighting, temperature and music/TV taking into account day of week, time of day, and other factors.
Other automated tasks may include setting the air conditioning to an energy saving setting when the house is unoccupied, and restoring the normal setting when an occupant is about to return. More sophisticated systems can maintain an inventory of products, recording their usage through an RFID tag, and prepare a shopping list or even automatically order replacements.
Some practical implementations of home automation are for example when an alarm detects a fire or smoke condition, then all lights in the house will blink to alert occupants. If the house is equipped with a home theater, a home automation system can shut down all audio and video components to alert the user to a possible fire or a burglar.
System
The elements of a domotics system are:
Read more at Wikipedia.org
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