In recent years, people's attention to security monitoring has increased significantly, which has promoted the rapid development of traditional analog monitoring to pure digital monitoring. At the same time, security monitoring in the field of visible light is also developing rapidly, and the requirements for the clarity of visible light cameras are also increasing. Come higher. The video surveillance system mainly uses a combination of visible light cameras, manual monitoring and video recording for daily security protection. In the absence of light in the dark, weak light, long distances or even hundreds of meters to several kilometers, rainy and snowy weather, etc., the monitoring effect of traditional visible light cameras is not ideal. In this case, infrared thermal imagers should be used. And was born!
The infrared thermal imager is to receive the infrared rays emitted by the object, measure the temperature of the surface of the object according to the infrared rays emitted by the object with temperature, and generate an infrared thermal image through photoelectric conversion. The traditional night vision device uses the light reflected by the target under weak light to enhance the visible image on the fluorescent screen to the human eye to observe and aim at the target, so in the complete absence of light or strong light interference, night vision The monitoring effect is not ideal. Infrared thermal radiation, especially the far-infrared radiation with a wavelength of 7~14μm, can overcome the limitations of harsh climate conditions and can work normally in the dark night.
The application of thermal imaging cameras in the medical industry: see a doctor with thermal imaging cameras
Thermal imaging cameras are not only widely used in security monitoring, but also play an indelible role in human disease detection.
From the point of view of physics, the human body itself is a biological source of infrared radiation, which can continuously absorb and emit biological infrared radiation sources from the surrounding. Generally speaking, the temperature of normal people is stable and characteristic. , each part of the body also has corresponding changes, forming different thermal fields. When there is an abnormality in the human body, the snow flow will change accordingly, resulting in changes in the temperature of this part of the human body. According to this principle, the infrared radiation of the human body is collected by the thermal imaging system, and converted into a digital signal that can be calculated, and analyzed by professional software to form a pseudo-color heat map. The location of human lesions is detected, which provides a convenient and reliable basis for clinical diagnosis.
