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  • Time of issue:2020-05-19 00:00:00
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Description:With the progress of science and technology, monitoring system has been widely used in various fields. Current video monitoring system mainly USES the visible light artificial monitoring, video cameras and
Description:With the progress of science and technology, monitoring system has been widely used in various fields. Current video monitoring system mainly USES the visible light artificial monitoring, video cameras and
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  With the progress of science and technology, monitoring system has been widely used in various fields. Current video monitoring system mainly USES the visible light artificial monitoring, video cameras and a combination of routine safety protection, but due to visible light cameras in under the condition of bad weather or light slightly lower, it is hard to get useful video image filter interference, thus make the whole security system in the night or bad weather conditions preparedness. Then, the infrared thermal imaging technology which can improve the night vision prevention ability has been widely used and developed in the industry.
 


Technical principle of infrared thermal imaging technology:
 
  In nature, everything above absolute zero (-273.16℃) radiates infrared rays continuously, a phenomenon known as thermal radiation. Infrared ray is a kind of light wave invisible to human eyes, whether day or night, the object will radiate infrared ray, but infrared ray no matter strong or weak, people can not see. The wavelength of infrared light wave can be divided into two parts, one is near infrared, the wavelength is 0.78~2.0 micron; One is thermal infrared, with a wavelength of 2.0 to 1,000 microns. Because infrared ray will be absorbed by the atmosphere and other substances in the process of propagation, the intensity will decrease, and only the infrared ray wavelength is at 3&Mu. ~ 5 & mu; M and 8 ~ 12 & mu; The waveband of M has good penetration, so infrared imaging technology mainly USES these two wavebands for detection. Infrared detector technology and optical imaging objective lens technology are used to receive the infrared radiation energy distribution pattern of the target and reflect it to the photosensitive element of the infrared detector so as to obtain the infrared thermal image, which corresponds to the thermal distribution field of the object surface. Generally speaking, infrared thermal imager is to transform invisible infrared energy emitted by an object into visible thermal image.
 
  Thermal imaging camera (also called thermal imager) is using the infrared detector, optical imaging lens receives the infrared radiation signal of the measured target, after infrared optical system of infrared detector using electronic scanning circuit on photosensitive source analyte in a sample of the infrared thermal imaging scan converted to electrical signals, processing, conversion, enlargement or standard video signal through the television screen or detector display infrared thermal images. The instrument made of this principle is a thermal imaging camera. It detects tiny temperature differences and converts them into a real-time video image that is displayed on a monitor. Unlike other night vision systems that require little light to produce images, thermal imaging cameras require no light at all, making them perfect tools for monitoring in the dark and at night.
 


Security industry application:
 
1. Infrared thermal imaging technology is applied in border, sea surface and other national-level security and defense fields. Due to its long distance and large coverage area, infrared thermal imaging technology can detect personnel, vehicles, ships and aircraft within several kilometers.
2. Infrared thermal imaging technology is applied to polar exploration under harsh environment and outdoor security layout control. Infrared thermal imaging technology can work in the day, night, even fog, rain and snow and other severe weather; Not subject to strong light, backlight and other interference; No electromagnetic radiation, not easy to expose their own targets, good concealment
3. Infrared thermal imaging technology can be integrated with current monitoring equipment to form a dual-spectral visiting function of surveillance cameras. Visible light is used in the day and infrared light is used in the night, which enables better adaptability to the environment, longer monitoring distance and higher efficiency.
4. Infrared thermal imaging technology combined with the current intelligent algorithm technology can improve the accuracy of illegal intrusion, transboundary and face detection, and is widely used in the perimeter protection field.
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