Viandas fifth generation flagship laser beam to solve the problem of beam crosstalk
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The on-beam laser intrusion detector (laser beam) has been applied to troops, prisons, petrochemicals, railways, electric power, banks, factories, etc. due to its long distance protection, good environmental adaptability and stable working conditions. Schools, high-end communities and other places of security protection.
The laser beam is composed of a pair of laser transmitters and laser receivers. At present, the number of beams on the market is mostly two or more beams. Among them, lasers are used in key protection places such as prisons, detention centers, petrochemicals and electric power. In order to achieve the effect of strict prevention, the number of detector beams is more than ten beams, the distance between two adjacent beams is generally 15-30cm, the distance between protection is 100-500 meters, and the distance from the farthest is up to 5000 meters. .


Ordinary lasers work on each of the beams in exactly the same modulation mode. Different beams of the same detector are not encrypted and subdivided, that is, all beam lasers are emitted on the same laser transmitter. The laser information is exactly the same, when the laser reaches the transmitter and the receiver reaches a certain distance (generally 50-100 meters, the distance of the spot emitted by the laser transmitter, the spacing between two adjacent beams, the laser receiver The three factors of receiving sensitivity are determined. Because of the beam spread, the laser beam emitted by the laser transmitter will form a laser beam when the laser beam receiver reaches the laser receiver, or the laser beam of any one of the transmitters. After reaching the receiver, it will be received by multiple receivers adjacent to the corresponding beam of the receiver. Since each beam of the transmitter is encoded uniformly, when multiple receivers adjacent to the receiver receive only the same beam signal of the transmitter, It is also wrong to determine that the laser transmitter and the laser receiver are working properly, even if the laser transmitter has one or several Beam damaged or blocked by an object.
The consequence of this is that in practical applications, each beam of the receiver can trigger an alarm 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 adjacent beams at the same time to generate an alarm. This will cause the illegal intruder to cross the laser detector line in the form of smashing or drilling near the transmitter. No alarm will be generated, resulting in false negatives, which will cause major safety hazards to users' lives and property in the security area. Especially in some places with high security protection level, if the ordinary laser radiation detector is used as the perimeter anti-intrusion detector, it will bring huge security risks or catastrophic consequences to the user's life and property.
Therefore, how to solve the problem of mutual coverage interference between adjacent beams caused by the beam diffusion is a major problem that those skilled in the art need to solve.


Viandas's fifth generation-the flagship version of the laser beam uses each beam independent identity encryption and demodulation technology (patent), in the same pair of detectors, each beam code is unique, the same detector works at any Distance, no mutual coverage and interference between the beams, accurate identification of each beam can be achieved at any position between the laser transmitter and the laser receiver; the beam identity accurate identification technology of the Viandas flagship laser detector can Ensure that the laser transmitter and laser receiver work at any distance, even if you are blocking any beam at the laser transmitter end, the detector will not have any detection dead zone, and any beam can be blocked to achieve accurate detector alarm. .


The patented technology of the Viandas flagship laser is used to solve the technical problems of traditional laser beam crosstalk and become a prison, detention center, military restricted zone, rail transit, museum, finance, petrochemical, factory, hazardous warehouse, etc. The preferred detector for key protection units.

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