Safety Alarms for Home: Keep the Burglars Away
By Charles Hopkins
Published 12/14/2006 | Security and Safety
Burglar alarms or safety alarms for home come in a wide range. From simple closed or open circuit alarming systems to sophisticated networking and computing alarms, you can employ any of these types to safeguard your home.
Even a dog is a superb safety alarm. The sign hanging at the gate beware of dogs is normally a warning for an intruder trying to get in with unfair intensions. But everyone cannot pet a dog and make use of it as a safety alarm. After all it is a living being. What if the dog fails to detect the intrusion?
The concept of a safety alarm for home protection and taming a dog in a household can be correlated in this way. But here we are keener on the discussing safety alarms devised technologically.
Basic types of safety or burglar alarms
- The open-circuit system burglar alarm is one of the common alarms used in the household. The circuit system gets operated with the opening of the indicator that is the door or the window or any other such outlet. What happens when the indicator gets triggered because someone is coming in? There is flow of electrical charge within the circuit and finally when the flow reaches the other end of the circuit to get a full connection, the alarm blows.
- Another such simple type of safety alarm in most popular use and is quite cheap to be installed is the closed circuit alarming system. Does it operate almost the opposite of the open circuit system? You are right. Instead of opening the door or the window, here you require to close them to complete the circuit for the alarm to go on. Therefore as soon as the intruder wishes to get in and opens the windowpanes or the door, the alarm will sound the alarm and aware the members of the house as well as the neighboring surroundings.
Motion detector: The key tool
Circuit burglar alarms are best for houses and individual apartments where there can be a confinement of outside edges. But in bigger premises and high-rise buildings these types of alarms are not that effective. In a wide open space tracking the motion of a person becomes difficult for a circuit system but in a closed and confined space, it can easily do so.
For bigger areas and within the open space of the house, you require a motion detector to instantly capture the motion if someone is in. What does a motion detector actually do?
- When someones senses of movement are being identified by the motion detector, it automatically starts radiating radio signals inside that area, which can be a room.
- The next step the motion sensor takes is it starts monitoring the pattern of reflection coming from the signals.
- If the pattern of reflection is systematic and in a single flow without any violation, the motion sensor or detector continues to follow the track.
- Once a distraction is noticed in the reflection path, the detector indicates the alarming system and the alarm is triggered.
Can you guess at the dogs detection process in case of this particular device? There is nothing wrong in such assumption because in either situation the purpose is to inhibit the intrusion. Let the burglar be caught.