In order to help prevent false alarms, here are a few things that can be done.
Have your alarm system put on "test" during periods of construction or other instances when the fire alarm may go off unintentionally.
When installing smoke detectors, it is important to place them far enough from the kitchen where smoke from food can cause false alarms.
Change batteries twice a year. A good way to remember this is when you change your clocks forward and back, change the batteries in your smoke detectors as well.
Have your alarm system service annually.