Let’s take a look at what a burglar alarm system is, and maybe that can help you decide what the best burglar alarms system is for you. A burglar or Thief (or intrusion), fire alarm and security alarm systems are designed to allow the user to a specific threat warning. The sensors are connected to a control unit via low voltage wires or narrow-band RF signal that is used to interact with a device response. Common security sensors used to detect the opening of a door or window, or motion of passive infrared (PIR), a statement. The new cable systems are mainly for the economy. Adaptation of facilities frequency wireless systems for more rapid and less costly. Some alarm systems serve a single objective thief or fire protection. Combination of both systems provide protection against fire and intrusion. Matraques small range of alarm systems, complex, autonomous, multi-zone output with color coded computer monitor. Many of these concepts also apply to portable alarms for protecting cars, trucks or other vehicles and their contents (for example, “Car Alarm”). See also the fire alarm control panel for specific fire system issues. Burglar alarms are sometimes referred to as alarm systems, alarm control panel for a discussion see the logic design of wired alarm systems.

Alarms (or perimeter detection systems, perimeter protection, intrusion detection systems and many other terms for the same thing) are divided into two main areas: Interior and burglar alarm industry and perimeter intrusion detection in the system.

Cover

Such sensors are designed for use indoors. The use outdoors is not specified, the maintenance of false alarms due to the vulnerability and climate.

Passive Infrared Detectors alarm systems
The passive infrared detector (PIR) is one of the most common detectors in homes and small business environments, providing an affordable and reliable functionality. The term passive means the function, the detector may, without the need to generate and emit their own energy (unlike ultrasonic and microwave detectors, intrusion volume, the “active”) in operation. PIR are able to distinguish whether an infrared port-emitting first problem is caused by learning the temperature of space control and test of a change in temperature due to the presence of an object present. With the principle of differentiation, controlling the presence or not presence, PIR is to verify if an intruder or object is really there. The creation of individual detection areas in each zone comprises one or more layers can achieve differentiation. Among the areas that there are no sensitive areas) (dead zones, which are used by the sensor for comparison.

Ultrasonic Detectors
Transmission frequencies between 25 kHz and 75 kHz, these active detectors, ultrasonic waves are inaudibles to humans. The principle of Doppler effect is the underlying method of operation which detects a change in frequency for moving object. This occurs when a moving object changes the frequency of sound waves around him. Two conditions must occur to successfully detect a Doppler change event:

* There should be no movement of an object is either away or receiver.
* The movement of the object must be a change in the ultrasonic frequency to activate the receiver based on frequency.

The ultrasonic detector operates according to the transmitter emits an ultrasonic signal to be protected in the area. The sound waves from solid objects (like the earth around the walls and ceiling) are reflected and then detected by the receiver. Because ultrasound waves are transmitted through the air, after hard surface objects tend to reflect most of the ultrasound energy, while soft surfaces usually absorb more energy. When the surfaces are fixed, the frequency of the waves that are detected by the receiver, the same frequency. However, there will be a change in frequency as a result of the Doppler principle, in moving a person or object to or from the detector. This event triggers an alarm. This technology is considered by many professionals as the alarm obsolete and is not actively installed.

Microwave detectors
This device sends a microwave transmitter and detects microwaves at a receiver either through reflection or reduction in the intensity of the radiation. Transmitter and receiver are usually combined into a single box (monoestático) applications for indoor and separate dwellings (radar) for outdoor applications. Through the production of energy in the microwave range of the electromagnetic spectrum, the detector functions as an active volumetric device that responds with:

* Change of Doppler frequency.
* A frequency of phase change.
* A movement that causes the reduction in the energy received.

Photo-Electric Beams
Opto-electronic systems, the presence of an intruder through the transmission of visible light or infrared rays in an area where these can be hampered. To improve the detection surface, the beams are often in stacks of two or more employees. However, if an intruder is the presence of technology is known, can be avoided. Technology can be an efficient long-range detection system, when three or more batteries installed, s’espaien in the transmitter and receiver, a fence as a barrier. Systems for internal and external applications. To prevent a clandestine attack with a secondary source of light detector used in an enclosure closed “state, while maintaining an intruder passes through, most systems recognize and a modulated light source

Glassbreak
Glass breakage detectors are used to protect the inner perimeter of construction used. When glass breaks, it generates the sound in a frequency band width. These can range from Subsonica in kHz, 20 Hertz (Hz) and can not be perceived by the human ear, the audio frequency range 20 Hz to 20, you can hear people in the ultrasound the above 20 kHz and can not be heard again. Acoustic glass breakage detectors are mounted near the wheel and waiting for sound frequencies associated with broken glass. Earthquake Glasbruchmelder that range are so different from the platform. When glass breaks, it produces specific shock frequencies that travel through the glass and often through the window frames and surrounding walls and ceiling. Typically, the most frequently occurring 3-5 kHz, depending on the type of glass and the presence of an intermediate layer of plastic. Earthquake Glasbruchmelder “feeling” shock and frequencies of these in turn lead to a state of alert.

Smoke, heat and carbon monoxide detectors
Most systems can be equipped with smoke, heat and / or carbon monoxide detectors. These areas are also known as 24-hour () at any time. The smoke and heat detectors against the danger of fire detectors and carbon Monxide to protect against the dangers of carbon monoxide.

Such sensors are the most time mounted on fences or installed at the edge of the protected area.

Vibration (Shaker) or inertial sensors
These simple devices are barriers to be mounted and identified, in particular an attack on the structure itself. The technology is based on an unstable mechanical configuration that is part of the electrical circuit. When movement or vibration occurs, the unstable line moves and breaks the current flow, which generates an alarm. The device technology is different and may, at different levels of vibration. The average transmission of vibration should be selected properly for each sensor, which are more appropriate for different types of structures and configurations. More sophisticated sensors use piezo-electric components and mechanical circuits are optimized to be extremely sensitive to vibration. These sensors are more durable and protected from manipulation.

* Advantages: very reliable sensors, low false alarm rate and space in the medium price range.
* Disadvantages: must be close to the most appropriate. The relatively high price deters many customers, but compensates for the efficacy of high prices.

Conclusion: The best value for money for the fence mount configuration.

Passive magnetic field detection alarm systems
This buried security system is based on the principle of magnetic anomaly detection is based. The system uses parallel, a generator unit with two electromagnetic fields. Both lines run along the circumference and usually about 5 cm away in a wall or buried in soil on the feet installed. The cables are a signal processor to analyze a change in the magnetic field combined. This type of sensor cable buried security system can be buried on top of almost every type of wall to provide a regular time detection of the wall, or buried in soil.

* Advantages: Very low rate of false alarms can be provided on a wall too high to detect thieves real change.
* Disadvantages: Can not install near power lines, radar installations, airports or replace.

Conclusion: The best solution in the field of sensors buried.

E-field alarm systems
This system can be installed near the building perimeter fences and walls. It also has the capacity to be installed on posts with special stable. The system uses an electromagnetic field generator starting up, a wire with different sensor cables in parallel. Both lines run along the scale and are typically about 800 mm apart installed. The sensing wire is connected to a signal processor that analyzes:

* Change amplitude (mass) of the intruder,
* Exchange rates (movement) of the intruder,
* Preset Disorder (at the age of the intruder) in the pattern.

These determine the characteristics of an intruder, and when all three were detected at the same time creates an alarm. The barrier can provide protection of soil, about 4 feet tall. This is configured generally in the areas of approximately 200 feet in length depending on the number of lines installed sensor.

* Professional: hidden spilled.
* Disadvantages: expensive, short areas, which means more electronic (more money), a high number of false alarms that may seem, because a cat is a person who really does not do well defined climatic conditions extreme due to false alarms.

Conclusion: Like the buried area of passive safety systems of magnetic field detection will work best in most of the time.

Microwave Barriers
The operation of a microwave barrier is very simple. This type of product generates radiation with high frequency waves, which pass from the transmitter to the receiver, making an invisible but sensitive defense. If the beneficiary is a difference in status (in the front and therefore detects a possible intrusion), the system begins with a detailed analysis of the situation. If the system is the mark of a true invasion of view, provides an alarm signal that can be treated as analog.

This is some general specs and ideas for picking and choosing your home burglar alarm security system.

Related posts:

1. Alarm Home Security System Wireless Alarm Home Security System Wireless What is the best wireless...
2. Discount Security Systems What are the best discount security systems? There are lots...