Viandas laser beam detector realizes independent encoding and decoding of each beam

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 of the beams of the on-beam laser detector works in the same modulation mode, and the different beams of the same detector are not subjected to any encryption and subdivision processing, that is, on the same laser transmitter. The laser information emitted by all beam lasers is 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. 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 or the receiver of the receiver after reaching the second beam of the receiver. The third beam of the machine is even more adjacent to the beam, and so on. The consequence is that each beam of the receiver can reliably alarm when each beam is individually blocked near the receiver, but if it is blocked close to the transmitter. One or two beams, the corresponding beam of the receiver will not generate an alarm, it must block two at the same time The above or more beams will generate an alarm, which will cause the illegal intruder to cross the laser detector line in the form of smashing or drilling, and may not generate an alarm, resulting in a false report, which will cause significant damage to the user's life and property in the security area. Security risks.

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.

How to solve the problem that the number of beams of the laser beam detector is increasing, and the crosstalk of the beams when the detection distance is getting farther and farther, and the beam is accurately identified?

Guangzhou Ai Li Fu Electronic Technology Co., Ltd.'s high-end brand: Viandas laser technology R & D team after 18 months of hard work, after more than 40 program updates and more than 100 outdoor field tests, successfully launched the fifth generation of laser Opposite detector - Viandas flagship laser detector! The fifth-generation flagship laser has completely solved the problem of cross-talk between beams when the detection distance is getting farther and farther, so that each beam can be accurately identified to prevent false positives.

The fifth-generation laser-on-beam detector of Viandas uses a large MCU to independently encode and decode each beam. The same detector can achieve up to 144 different beam codes; 144 beams can be different on one detector. Coding work without mutual interference. At present, some manufacturers on the market advertise their products with beam independent encryption technology, but their main control board can only complete two or four different beam codes. When one laser beam detector has more than two or four beams. In this case, only two or more blocks of the same coded main control board can be repeatedly superimposed; if the user needs to purchase a pair of 12-beam laser beam detectors, it is necessary to repeat the superposition of 3 pieces of 4 different coded main control boards. Up to 12 beams are reached, but at this time the 12-beam laser beam detector is not really uniquely encoded by each beam, but only 4 different codes, and each of the different codes has 3 beams working with the same code. That is, 1/5/9 beam coding is the same, 2/6/10 beam coding is the same, 3/7/11 beam coding is the same, 4/8/12 beam coding is the same; this low-level "beam independent coding" laser beaming The detector still forms beam crosstalk coverage between the same laser beam detector beam when the detection distance is long.

The fifth generation of laser-on-beam detectors of Viandas uses high-speed processing of large MCUs for independent encoding of beams. The output of 12-beams is different for single-board output. Up to 144 beams can be encoded by the frequency conversion of the main control board, which is calculated according to the standard beam spacing of 15cm. Viandas fifth-generation laser-on-detector detector can achieve up to 2145cm effective height without beam re-sequence and crosstalk. This powerful beam independent codec technology makes Viandas fifth-generation laser pair The detector can easily meet the needs of various special project applications (super long distance, super multi-beam, specific height, specific density, etc.), and it is an ideal detector for many fields such as security, scientific research, metrology testing, special inspection, etc. The field of application of detectors has become more widespread.