Programmable logic controllers used in electric drives of an intelligent building

This paperwork presents applications built to create automatic processes performed through preprogramming of the functions of a building and the spaces adjacent to this one. The concept of "intelligent building" gives us a drastic reduction of energy consumption without affecting of the comfort given by the most modern electric equipment and facilities. In a classical building, the individual systems are independently controlled and their parameters do not influence one on each others. A building can be called “intelligent” when its systems control is integrated and the decisions are taken based on rules initially set out. So, we built a hardware structure for an intelligent building implemented system at a scale model and then we programmed the machine to obtain various equipment drives built into the system. The extending of these applications made for a scale model of a building to a real building, it will consist of sensors (presence, motion, level and humidity) able to ensure the desired system security degree. Also, other functions can be added to let the system to be remotely controlled via telephone or through a computer connected to the Internet.