Increase in Mechanized HomesThe trend towards automating homes seems to be increasing. A study by ABI Research in 2003 predicted that the home automation market in the United States of America (USA) would rise from $1.5 billion to more than $3.8 billion US dollars by 2008. Even kitchen appliances such as ovens are becoming networked and automated today. A home security system is often part of a smart home. This type of home automation can consist of lights on timers or dimmers, electronics and appliances hooked up to remotes, sprinkler systems on daily automated schedules, hot tubs and pools with robotic cleaners, or any combination of the above. Use of the Zigbee technology ensures control by flexible management of lighting, cooling and heating systems in a home, and automated control of multiple home systems to improve conservation, safety and convenience. It allows conservation of energy by capturing highly detailed electric, water and gas utility usage data and use the data for optimum usage of natural resources. Using Zigbee in homes is extremely convenient as installation and upgradation of the entire network is without wires and multiple systems can be run side by side with a single remote control. The safety of zigbee canot be ignored as wireless sensors are installed easily to monitor a wide variety of conditions and it system enables automatic notification upon detection of unusual events.An Illustration of Zigbee in a HomeFor example, sensors on the windows and doors of your house can wirelessly report several times each minute to a central security controller that “all is well”-a level of security that, until a few years ago, only a museum or a mansion in a James Bond movie might have. Sensors in each room can monitor human presence, temperature, humidity, and light levels, and then send the data to a heating, ventilation, and air conditioning (HVAC) controller. The controller first figures out whether anybody is in a given room, and only then decides whether to raise or lower the window shades, open or close the air dampers, or run the HVAC system at full or reduced power. Rooms that are occupied can be maintained within a narrow comfort zone, while the temperature in vacant rooms is allowed to move up or down through a wider range. For more on zigbee products and sensors log on to http://zigbee.eu
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