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> The Fundamentals of a Burglar Alarm System
Summary: The most fundamental design of a burglar alarm system is just a simple electric circuit that sounds whenever a circuit is completed or broken. So fundamental that you can make one yourself.
Todays burglar alarm systems have gone a long way from being a simplistic device with a solenoid gong that Edwin Holmes has made in 1852. Todays burglar alarm system incorporates the internet and radio waves, making it really a difficult beat for burglars.
The most fundamental design of a burglar alarm system is just a simple electric circuit that sounds whenever a circuit is completed, or in some designs, broken. This action is called breaking the circuit, and other than your dog maybe the only alarm that guards your doors and windows. How do burglar alarm systems work?
In every electrical circuit, electricity flows on a completed path between two points of opposite charge, negative and positive or input and output. The circuit and the electricity is controlled by means of a switch, an on or off device where you can open or close, or reroute a part of the circuit.
So for example, in a standard circuit that consists of a power supply, a line, switch, bulb, and line back to power supply, every time the switch is turned on the bulb lights. Burglar alarm systems work that way: whenever the alarm is set on active, current passes through the doors and windows. Anyone attempting to open a door will educe the alarm.
One problem though with this design, to stop the alarm you only need to close back the door and the circuit in once again complete. Thats the function of the control box that accompanies most modern alarm system. This control box is connected to all system alarms. Once the alarm is triggered, this control box won’t cut it off until somebody manually cuts off the circuit. Subsequently, the control boxes are usually hidden and equipped with a lock so the burglar wont be able to find it.
Because this burglar alarm system is quite rudimentary, you can make one perfectly for your home. With proper knowledge of electricity you can homebrew the Break Circuit Burglar Alarm System (you may call it this way). For ideas relating to such circuits, study how refrigeration lighting comes to play.
Homebrew your Burglar Alarm System
Opening the refrigerator door emits a light. On some designs, the switch is embedded in such a way when you open the door the switch is released, completing the circuit and light goes on. Similarly, embed a press switch on a door frame. Work the circuit in such a way that the pressing will break the circuit and releasing will complete. Now attach the circuit to a buzzer.
Actually, you can imagine many uses with this circuit design. Why, try hooking it up on a disc player and invite your special someone over for dinner. Of course for the dramatic to take effect, you should let her open the door.
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Fire Alarm Systems
Many people are hurt, lost their possessions and die because of fire. Although fire can easily be prevented it is one of the leading causes of injury at home in the United States. In some cases where individuals die of fire, it is because they were not aware that their house or the building that they are on is on fire.
Fire alarm systems warn people of a potential fire. It warns the occupant while the still have time to either put out the fire or evacuate to safety. Most of todays fire alarm systems automatically call or notify the nearest fire department so that the fire will not spread out of control.
Fire alarms are either set off manually or by heat detectors or smoke detectors. Fire alarms are most of the time set to detect levels of heat or smoke which usually is an indication of fire. And some fire alarm systems have blinking or flashing lights for those who have hearing impairment. With todays technology, fire alarm systems can now be integrated with the home security alarm system for the utmost protection and safeguard of your home.
Smoke detectors is part of the fire alarm system, it detects smoke in the air and sets off an alarm thus alerting those nearby for a possible fire. Most smoke detectors detect smoke nowadays either by ionization or optical detection and some smoke detectors have carbon monoxide detectors that detect carbon monoxide by which also prevents carbon monoxide poisoning. The optical detector in smoke detectors is a light sensor which uses a beam like laser. These beam sensors then sends a laser like beam to other sensors, if smoke is non-existent, the laser like beam passes through the optical chamber of the light sensor in a straight line. If smoke is present, the laser like beam is scattered by the smoke particles as it enters the light sensor and the scattered light then triggers the alarm of the smoke alarm.
Ionization detectors are much cheaper than light detectors, although these types of smoke detectors are discouraged from being used because of environmental reasons. Ionization detectors work by detecting particles of smoke by a small amount of radioactive americium-241 (that is why it is discouraged from being used). This radiation of this material passes through an ionization chamber. This chamber permits the steady flow of current of electrodes, so that when smoke particles enter this chamber it interrupts the flow thus setting the alarm off.
Some fire alarm systems have sprinkler system that will contain or put off the fire before it becomes uncontrollable. However the only way to prevent fire is to take steps to be careful and take additional preventive measures.
Home Security Alarm Systems
The world we live in is filled with robbery and crime due to evident differences of classes in our society. Everyday we read in the papers about burglaries and other sorts of crimes. However, a way to protect our homes against burglaries and other crimes is by installing home security alarm systems.
Home security alarm systems are one of the effective ways in protecting our homes and families. Installing home security alarm systems in our homes will make robber, burglars and other criminals think twice. The home security alarm systems these days are more sophisticated and highly advanced. The word security means a condition of being protected against any threat or harm. Home security alarm systems are easy to operate. These home security alarm systems have various interconnected sensors and control units.
Home security alarm systems are equipped to detect fire, burglar and any intrusion. The sophistication of home security alarm systems ranges from noise-makers to a more complex systems. When an unauthorized entry is detected, the home security alarm system sends a signal to the home-monitoring company or to the local law enforcement agency. In some cases like fire, the security alarm system will then trigger an alarm to notify the occupants and then dials the local fire department. In other home security alarm systems, a sprinkler system is activated to contain a fire or slow down its progress.
The most important aspect in having a home security alarm system is that in time of emergencies like burglary, carbon monoxide poisoning or fire, the proper authorities are notified. Or in some security alarm systems, the security monitoring company employs specialist to determine the course of action needed on a particular emergency.
Some home security alarm systems are monitored twenty-four hours a day by its local monitoring stations. When the security alarm system is set off, the monitoring station will contact the homeowner by telephone to find out if the alarm is false or not. In such case, the monitoring company uses a password to confirm that the one answering the telephone is not an intruder. The monitoring station will then contact the local law enforcement agency if necessary.
Having an efficient and reliable home security alarm system is an effective way to protect your home and to provide you security at all times.
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Driveway Alarm Systems
Installing driveway alarm systems on your driveway provides additional protection to your loved ones and your home. Knowing when somebody is approaching your home is essential in home security. Driveway alarm system gives you advance notification of wanted or unwanted company.
Driveway alarm systems are similar to automatic doorbells; it informs you of approaching guest. Driveway alarm systems work by sending a signal to its receiver whenever its infrared motion sensors or magnetic sensors or rubber air hose system (like the ones used by gas stations that detects vehicles driving over the hose) detect vehicles, people or large animals are on your driveway.
Driveway alarm systems have two basic components. The driveway alarm transmitter and the driveway alarm receiver. The driveway alarm transmitter is placed on the driveway to detect vehicles, persons, or large animals on the driveway. If a presence is detected on the driveway, it will send a signal to the driveway receiver, thus alerting the occupants of the house. Driveway alarm systems usually have microphones and speakers to communicate with the guest and the occupants. Or in a case like burglary, driveway alarm systems triggers a very loud sound, usually a prerecorded message that prevents the burglar from doing any bad intentions to the house.
Driveway alarm systems are easy to install. The sensors of the driveway alarm system can be installed almost anywhere. It can be installed beneath the eaves of your house, or on the yard, or on the surrounding area of your property hidden out of sight, or disguised as an intercom system on the gate of your driveway.
There are four types of driveway alarm systems. These are wireless driveway security systems, wired driveway security systems, driveway alarm systems with infrared motion sensors or passive infrared, and driveway alarm systems with vehicle sensing probes that use magnetic detectors.
Each type of driveway alarm systems has its own advantage and disadvantage. The wireless system is easy to install and inexpensive but its batteries and transmitters have limited range. In the wired system, outside maintenance is not required, but it is more expensive and difficult to install. Driveway alarm system uses infrared motion sensors and is very good in detecting cars and people; however it also detects large animals and is usually set off by birds and other environmental occurrence. Driveway security alarm system uses vehicle sensing probe or magnetic sensor and can only detect moving metals and not people walking.
Every driveway security alarm system has its own unique features. It is important to remember that homes that are not installed with security alarm systems are more prone to burglary. One way of prevention is by installing a security alarm system on your home.
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