Strengthen the advantages of active infrared surveillance lattice infrared technology

When people have higher and higher monitoring requirements, existing monitoring technologies cannot meet people's diverse needs. In addition to monitoring during the day, it seems that night surveillance has become a user's concern. Infrared night vision monitoring, thermal imaging monitoring, laser night vision monitoring, etc. have become the preferred method of night monitoring or low illumination monitoring.

In the night vision video surveillance technology is mainly divided into active infrared monitoring and passive infrared monitoring. The most common infrared cameras are also divided into first-generation ordinary LED infrared cameras, second-generation array LED infrared cameras, and third-generation dot matrix infrared cameras. In special areas, laser infrared surveillance is often used, or a video surveillance camera supplemented by a passive infrared thermal imager. Judging from the current development level of domestic video surveillance technology, active infrared surveillance technology has outstanding advantages; especially in the past two years, Shenzhen security companies have made dot matrix infrared surveillance an important development direction, and vigorously strengthened active infrared surveillance technology to meet the needs of users. demand.

Infrared technology was first successfully experimented in the United States, and then slowly spread to China and applied in the field of video surveillance. After repeated experiments and practical applications, if the IR lamp package is regularly placed in the vicinity of the lens to form an infrared light source, it can play a role in infrared monitoring. This has become the first generation of LED infrared monitoring. Although it currently holds more than 90% of the market share, it suffers from fast light decay, short life, low power, and difficult heat dissipation. As a result, people have to continue to explore and develop better infrared. Monitor the product.

The second generation of infrared surveillance cameras achieved innovation in the first generation of products. Array LEDs solved the problem of heat dissipation and solved the problem of light attenuation due to the use of packaging materials. Its lifetime was 10 times longer than that of the previous generation. Despite effective mitigation of heat dissipation, light attenuation, etc., with the increase in cost, the second-generation array infrared monitoring has not been well applied in the market. It is not so much a generation of infrared surveillance products as it is the cornerstone of the improvement of infrared surveillance technology.

In addition to the high cost of array infrared surveillance, in order to match the angle of the camera, a lens is used to reduce the light transmission angle, resulting in the light can not fully display the dark area of ​​the screen, the monitor display is not bright enough, so it is quickly Three generations of dot matrix infrared technology were eliminated.

The third-generation dot-matrix LED technology is a reform of infrared monitoring technology. It adopts innovative semiconductor technology and arranges light-emitting crystal arrays to form high-power light-emitting diodes after special packaging. Integrating dozens of LED retroreflective crystals on the LED array has significantly improved in terms of cost, heat dissipation, lifetime, and concentration. With the continuous improvement of monitoring technology, dot matrix infrared monitoring is also faced with diversified development, energy-saving dot matrix infrared technology, dot matrix remote monitoring technology, dot matrix high-speed ball and so on.

The difference between the third-generation lattice infrared technology and the first two generations can be summarized as the following:

1. Traditional LED and array infrared use 3 yuan chip, IR-III third-generation dot matrix infrared uses 4 kinds of elements of the wafer, and the axial light, condenser and secondary lens light harvesting advantages are obvious. The good light-gathering performance has solved the second-generation low-light monitoring pattern.

2. The third-generation lattice infrared technology has changed the previous packaging method, and will not produce a fracture layer in the case of heat. Silicone encapsulation solves the problem of light failure, so that the traditional LED infrared monitoring no longer exists.

3. Infrared monitoring is the most critical issue of heat dissipation. The third-generation lattice infrared technology adopts thermoelectric separation, which effectively solves the problem of heat dissipation and prolongs the service life of the product.

At the 2011 Shenzhen Expo, the author also saw many exhibitors' dot matrix infrared launch as an important new product in 2012. The birth of the third generation of dot matrix infrared technology is not only the progress of the security industry, but also contributes to a harmonious society. As a security company CEO said, the future of video surveillance can not be separated from infrared night vision, infrared night vision surveillance can not be separated from the dot matrix monitoring technology.

Someone asked why laser infrared and thermal imaging cannot become mainstream in the market? In fact, with the continuous improvement of monitoring technology in the future, laser and thermal imaging infrared monitoring may also become the mainstream of the market. Only with the current security market applications, only in special areas or high-end industries can use these two technologies.

First of all, in terms of laser monitoring, the products currently being produced by laser monitoring and manufacturing enterprises all have “flashlight” phenomenon. Facing the ever-changing demands of users, how to expand the monitoring range is a place for future laser monitoring. Secondly, every time lasers are mentioned, many people think that lasers have radiation, so laser monitoring is not recognized by people. In fact, this point of view is completely wrong. The laser is a point light source. After the product is shaped, the product needs to be homogenized and expanded so that the energy is distributed over a relatively large range. Naturally, it has no effect on human beings.

Secondly, infrared thermal imaging is a type of passive monitoring. It has good concealment and no light requirements. It eliminates the cost of visible light production. However, the passive infrared false alarm rate is relatively high. At present, it is only used in special fields such as airports and transportation. In order to reduce the false alarm rate, its cost is also very expensive, and it is not suitable for large area promotion and application at present.

In summary, in the infrared monitoring technology, active monitoring technology occupies more than 90% of the initiative. In this 90% of the market, the third-generation lattice infrared monitoring technology is gradually replacing the traditional LED and array infrared technology. In the future development, we also expect that the infrared technology can be further improved to lay a solid foundation for security night vision surveillance.