Home & Garden Personal Safety & Security

Active Infrared Barrier

When the security and safety of loved ones, valuables and property is of prime concern, most home-owners prefer to install a high-quality security system for their protection. Such systems are also used by commercial property owners, high-security installations like nuclear or military facilities, government agencies, protection of VIPs etc. Other facilities like schools, turnstiles, hospitals, sports and entertainment arenas and places where people gather in large numbers are also vulnerable to attack and require a good perimeter security system. The principle of perimeter security is that it is better to deter the intruder before entry rather than trying to tackle them once they are inside your property.

One of the most efficient, cost-effective and well-established security systems with a proven track record is the infrared perimeter system. There are two types of infrared security barriers: Active and Passive. The passive system works on the principle that the sensors do not themselves emit any energy but instead they are able to detect changes in temperature and energy given out by any unauthorized person or intruder and this causes an alarm to be triggered. Active infrared barriers give out some form of energy – either microwave, photo-electric or photo-voltaic – which when interrupted, cause an alarm to be triggered. These are the most widely used barriers in many domestic and commercial applications and are installed in access areas like doors, windows, porches, gardens and external or internal walls.

The infrared light is transmitted as a continuous LED or laser diode beam to a photoelectric/photo-transistor/photo-diode sensor or receiver which is aligned at a prescribed distance. These beams can traverse long distances and across all kinds of gradients and landscape contours. They can also be adjusted for height of children and pets. Modern barriers are weather and tamper-proof, invulnerable to extreme climatic conditions like fog, mist and dew or even snow and gale-force winds. They have also become much more sophisticated and do not give many false-alarms. The beam travels to the scan zone which can be adjusted to rotate up to 180 degrees. The invisible beam thus provides a discreet and silent curtain which cannot be crossed without the alarm being triggered. Thus even though an intruder may know that the security system is installed, they cannot really detect the line of sight of these beams. Some knowledgeable intruders may try to confuse the system by using a secondary light-source to "freeze" it
while they enter, but even these problems have been addressed by the latest technology.

Based on your individual needs and budget, you can install the most appropriate multi-beam active infrared barrier to protect your property and valuables.


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