Infrared thermal imaging technology surpasses ordinary monitoring

Atmospheres, smoke clouds, etc., absorb visible light and near-infrared rays, but they cannot absorb infrared light of 3-5 micron and 8-14 micron. Infrared thermal imaging technology utilizes this principle. We use these two unabsorbable windows of infrared light. It is still possible to clearly observe the situation ahead at night when there is no light at all, or in an invisible environment where smoke clouds are present. With the development and demand of market demand, modern high-tech has almost applied or is about to be applied in the field of security monitoring. The rapid development of infrared thermal imaging technology in modern sensing technology has also begun to be applied in the security monitoring system.

Thermal imaging: a passive infrared night vision technology thermal imaging technology is a passive infrared night vision technology, ordinary infrared monitoring technology is active infrared night vision technology, thermal imaging technology is the use of different parts of the natural body of different infrared thermal radiation intensity To form an image, it finds the target based on the difference in temperature or thermal radiation between the target and the background or parts of the target. Since this technology does not change with changes in ambient light conditions, video images can be provided during day and night, even in severe environments such as heavy fog and rain. However, it can not achieve long-distance monitoring, and the monitoring screen can only determine whether there are suspicious people to enter, but can not see the face and appearance characteristics.

Ordinary infrared camera is an active infrared technology. It is a night vision technology that uses active reflection infrared light to achieve camera monitoring. With the application of the third generation of infrared array technology, the effect of active infrared monitoring has been It has been greatly improved, the product quality and life are also better, and the manufacturing process is not required, the cost is low, and it has a broad application prospect.

Infrared thermal imaging: The effect of monitoring can not be achieved to achieve the general monitoring scene is not possible to have visible light all weather, so ordinary non-infrared camera is difficult to achieve all-weather monitoring, and infrared thermal imaging camera is passive to accept the monitoring target's own infrared thermal radiation, It can be used with a visible light camera, and it can work normally and operate 24 hours a day or night.

In adverse weather conditions such as rain and fog, due to the short wavelength of visible light, the ability to overcome obstacles is poor, and thus the observation effect is impaired. Long-wave infrared thermal imaging cameras working at wavelengths of 8 to 14 μm have strong ability to penetrate rain and fog, so they can still observe targets normally. Ordinary surveillance cameras cannot see hidden objects concealed, such as being buried. Theft items, bodies, etc. Infrared thermography cameras can be detected and identified because when the surface is disturbed, the thermal profile of the surface is also destroyed. For example, the thermal radiation of the soil and the thermal radiation of compacted soil are different.

Since the infrared thermal imaging camera is a device that reflects the surface temperature of an object and forms an image, it can be used as an effective fire alarm device in addition to being used as a site monitor at night;

Our country’s borders are very long and the oceans are also vast. Due to the harsh nature of the wilderness environment, many systems are unlikely to play a preventive role, especially in the days of rain, snowfall, heavy fog, and high winds, not to mention alarms through intelligent analysis. Now. The use of personnel to patrol, using the telescope to observe, often due to the short wavelength of visible light, so that the observation is not ideal. Using infrared thermal imaging cameras, infrared thermal radiation of different objects can be detected, so that it can be observed from a distance, especially for weather conditions;

For abandoned objects such as baggage packages, ordinary surveillance cameras can only see the external characteristics of the baggage package, and it is difficult to observe the contents of the baggage package and therefore cannot analyze it. By intelligently analyzing the characteristics of the infrared thermal image of the baggage package, the characteristics of its internal items can be inferred so that it can be properly disposed of. Such as detectable analysis to identify combustibles and explosives.

Thermal imaging camera and visible light camera are not the same, can not boot for a long time, it is best not to boot at night and boot at night, and during the day to boot, please pay attention to avoid the sun or high temperature objects, so as not to burn the detector. At present, most manufacturers use the thermal imaging camera with a visible light camera to capture visible light during the day and passive infrared thermal imaging at night.

Infrared thermal imager: The monitoring application involves a wide range of infrared thermal imaging techniques to detect the infrared radiation of the target object and convert the temperature distribution image of the target object into a video image through photoelectric conversion, signal processing, etc. Infrared thermal imager. Infrared thermal imagers can be divided into two major types of refrigeration type and non-refrigerated type. The refrigeration type has a high thermal sensitivity and a complex structure, and is generally used for military purposes. The non-refrigerant type has a lower sensitivity than the refrigeration type, but its performance can satisfy most military applications and almost all civil fields. Because it does not need to be equipped with refrigeration equipment, the reliability and cost-effectiveness of uncooled infrared thermal imagers are higher than those of refrigeration models.

In the nighttime and nighttime monitoring of targets under adverse weather conditions, visible light devices have not been able to work properly due to well-known reasons. If artificial lighting is used, it is easy to expose targets. If low-vision night vision equipment is used, it also works in the visible light range and still requires external light illumination. The infrared thermal imager passively accepts the target's own infrared thermal radiation, and can work normally both during the day and night, and will not expose itself. Also in rain, fog and other harsh weather conditions, due to the short wavelength of visible light, poor ability to overcome obstacles, so the observation effect is poor, but the infrared wavelength is longer, especially in the thermal imager working on 8-14um, through The ability of rain and fog is high, so the target can still be observed normally.

Therefore, at night and in bad weather conditions, infrared thermal imaging monitoring equipment can be used to monitor various targets such as people and vehicles.

â—‡ Fire protection monitoring Because infrared thermal imagers are imaging devices that reflect the surface temperature of an object, they can be used as an on-site monitor in addition to nighttime. They can also be used as effective fire alarm equipment. In large areas of forests, fires are often not obvious. Hidden fire caused. This is the root cause of devastating fires. With the existing common methods, it is difficult to find such hidden fire signs. The use of infrared thermal imager can quickly and effectively find these hidden fires, and can accurately determine the location and scope of the fire, through the smoke to find the fire point, so that as early as possible to prevent early, extinguished as early as possible.

â—‡ Camouflage and concealed target recognition Common camouflage is based on preventing visible light observations. The crimes committed by ordinary criminals are usually hidden in the grass and forests. Due to the harsh environment and human visual illusions, it is easy to make erroneous judgments. The infrared thermal imaging device passively receives the thermal radiation of the target itself, and the temperature and infrared radiation of the human body and the vehicle are generally much larger than the temperature and infrared radiation of the vegetation, so it is not easy to disguise, nor is it easy to produce erroneous judgments.

â—‡ Intelligent traffic infrared thermal imaging surveillance cameras are widely used in the intelligent transportation field. With the rapid development of the front-end equipment market, the development of intelligent traffic applications has been promoted. The thermal imaging surveillance camera is free from the interference of low illumination and solar glare and can automatically exclude the influence of shadows and bad weather. This is an advantage that traditional surveillance cameras cannot match. Regardless of day or night, thermal imaging provides clear video images that are not affected by sunlight and are virtually uncontrolled by the outside environment. Therefore, the thermal imaging detection of vehicles and pedestrians at the intersection of the traffic situation is very accurate, to meet the 7 * 24 hours real-time monitoring needs.