Analysis of the use of laser beam independent identity encryption technology

Radiation-type laser intrusion detectors have been applied to troops, prisons, petrochemicals, railways, electric power, banks, factories, schools, high-end communities, etc. due to their long distance protection, good environmental adaptability and stable working conditions. A variety of places for security protection.

At present, the number of beam laser intrusion detectors on the market is mostly two or more beams. Among them, laser detectors used in key protection places such as prisons, detention centers, petrochemicals and electric power, in order to achieve strict prevention effects, detectors The number of beams is more than a dozen beams, the beam spacing is generally 15-30cm, the guard distance is 100-500 meters, and the maximum distance is up to 5000 meters;

At present, each beam of the laser beam detector on the market operates in exactly the same modulation mode. Different beams of the same detector are not subjected to any encryption and subdivision processing, that is, in the same laser emission. The laser information emitted by all the beam lasers on the aircraft is completely consistent. When the laser detector is protected from a distance of >100 m or more, due to the diffusion of the beam, the laser beam of the laser transmitter reaches the laser receiver and the adjacent beam portions are covered or completely covered. Covering, that is to say, the laser of the first beam of the transmitter reaches the second beam after partially reaching the first beam of the receiver, and the second beam of the transmitter partially or completely covers the first beam of the receiver after reaching the second beam of the receiver. Or the receiver's third beam is even more adjacent to the beam.

By analogy, the consequence is that each beam of the receiver can be reliably alerted when each beam is individually blocked near the receiver, but if one or two beams are individually blocked near the transmitter, the receiver corresponds. The beam does not generate an alarm. It is necessary to block two or more beams at the same time to generate an alarm. This will cause the illegal intruder to cross the laser detector line in a smashing or drilling manner and may not generate an alarm and form a leak. The report poses a major safety hazard to the user's life and property in the security zone.

In prisons, detention centers, drug rehabilitation centers, military restricted areas, petroleum and petrochemicals, inflammable and explosive, key cultural relics and other important places and key security precautions, the detectors for the perimeter intrusion alarm system must have good environmental adaptability and stable work. No error alarm, and absolutely no alarm.

Therefore, in the application of two-beam and two-beam multi-beam laser intrusion detectors, the mutual interference problem between adjacent beams due to beam diffusion is an urgent problem to be solved by those skilled in the art.

As an original national brand focusing on high-end intrusion detection and alarm system, Viandas has 16 years of experience in R&D and production of laser detectors. After 18 years of experience in deep understanding of the safety hazards posed by ordinary laser detectors. The research has overcome many difficulties, such as principle realization, device selection, stability of different environments, etc., and is the first in the industry to launch the Viandas flagship laser detector. The flagship laser detector has independent encryption for each beam. Decoding technology (smart beam identification technology), multi-mode detection technology, dual signal output technology and other original technologies, and has successfully applied for national invention patents.

The Viandas flagship laser pairing uniquely creates an independent codec technology for each beam, which completely solves the problem of adjacent laser beam-on-beam coverage. It has been widely used in prisons, detention centers, drug rehabilitation centers, airports, military restricted zones, petroleum and petrochemicals. Museums, water conservancy hubs, power, factories, high-end communities and other places to protect the safety of national production and life.