User manual

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integration of power electronics components, such as circuits and sensors; and using
the integrated components for standardized methods of assembling power converters,
which are still custom-designed [23].
As human keep wasting energy, these problems will never solved only if a
new system designed to overcome this problem. In the aspect of energy conversion
thinking, a basic start such as lighting system which people consume the most can be
reduces by a few ideas. People always enter and leave a room such as bedroom, hall,
laboratory, classroom without notice the lighting system stay on for a long time with
nobody present in the room. A system can be designed so that when the room is
empty, the lighting system can be automatically off. So from this idea, this will save
electricity use for a building, saving cost and energy at the same time. This system
should include sensor and relay. A sensor or also called detector is a device that
measures a physical quantity and converts it into a signal which can be read by an
observer or by an instrument [5]. A relay is an electrically operated switch. Many
relays use an electromagnet to operate a switching mechanism mechanically, but
other operating principles are also used [6]. A sensor will detect visitor so that it will
trigger the relay to turn off and turn on the lighting system. This type of system had
been use widely in many building, many places and country. Even a street lamp uses
this method for energy conversion. This type of method will lead to power saving
energy and thus become the one way to overcome the problem of shortage of power
supply.
1.2 PROBLEM STATEMENT
A building in a company or university constantly use energy more than
needed. This is because the resident did not alert to save power consumption. A