湖大考研暖通英语14.ppt

Professional Englishfor Built Environment and Service Engineering
Lecturers: Zhou Jin 周晋
Tel(O): 0731-8821312-202
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Email: zhoujin_y@
Unit Fourteen

Control and Building Automation System
What is an intelligent building?
Schematic Diagram of an Intelligent Building System
Up to now, there has not been a universally accepted definition for an Intelligent Building.
Most existing definitions of IB around the world centre on the need for a building to be suitable for the occupants to work and live in safely, comfortably, effectively and efficiently.
“Intelligent building is something that make stupid people feel not as stupid as they are”.
Intelligent Building can bring us
Reduced Resource Consumption
Both home and building technology offer tremendous potential savings through intelligent controls.
Optimized Convenience and fort
Apart from minimizing consumption costs, private home owners will be interested in higher levels of convenience, safety and security.
Smart Home is an integration of various systems at home such as security, home automation, lighting control, CCTV and entertainment system which is coordinated by a smart home controller and controlled by users using various mand interfaces such as a touch screens, keypads, universal remote controllers, browser, telephone, and even your LCD TV screen.
Smart Home Systems
CCTV: Closed Circuit TV: China Central Television
On/off Control
The control device can be positioned only to a maximum or minimum state (., on or off). Because On/off control is simple and inexpensive, it is used extensively for both industrial mercial control. A typical home thermostat that starts and stops a furnace is an example of On/off action.
Floating Control
Dead (neutral) zone
盲区停滞区
In floating control, the controller can perform only two operations— moving the controlled device toward either its open or closed position, usually at a constant rate. Generally, a neutral zone between the two posi