With the improvement of science and technology, the development of computer microprocessor technology, modern digital signal processing technology to enhance the introduction of new materials such as semiconductors and manufacturing process progress, infrared detectors in recent years, the rapid development.
What is an infrared detector
Infrared Detector (Infrared Detector) is the incident infrared radiation signal into an electrical signal output device. Infrared radiation is an electromagnetic wave with a wavelength between visible light and microwaves, which is imperceptible to the human eye. To detect the presence of this radiation and measure its strength, it must be converted into other physical quantities that can be detected and measured. Generally speaking, infrared radiation irradiation object caused by any effect, as long as the effect can be measured and sensitive enough, can be used to measure the strength of infrared radiation.
Infrared detectors are used in many aspects of our country, and plays an irreplaceable important role. Such as aerospace, astronomy, meteorology, military, industrial and civil and many other fields, the following to give you a brief introduction:
A meteorological prediction
In the field of meteorological monitoring, because of the Fengyun series of meteorological satellites, ocean series of satellites to monitor the day and night to send the satellite cloud diagrams, so typhoon prediction is becoming more and more accurate. In particular, the infrared detector components on the satellite, made into remote sensing instruments placed on the satellite, in order to be able to observe a variety of imaging.
Second, the military reconnaissance
Infrared detection has a good environmental adaptability, good concealment, strong anti-jamming ability, to a certain extent, can identify camouflaged targets, and equipment, small size, light weight, low power consumption, etc., in the military is widely used in infrared night vision, infrared reconnaissance, as well as infrared guidance and other aspects.
Three, airport security
In today's extremely convenient transportation, in the subway, trains, airplanes before entering the station need to go through the security check, through the security instrument, the staff can not open the parcel under the premise of checking whether to carry prohibited items, so as to escort the safety of each passenger.
Currently, scientists are working to expand the detector's band to terahertz. Because terahertz waves have a certain depth of transmission, there are important applications in imaging, such as airport security, national defense, gutter oil detection. In front of the terahertz security checker, the terrorists' hidden weapons are revealed.
Four, medical inspection
In the medical industry, infrared detectors can be found everywhere, the most common is nothing more than infrared thermal imaging camera, infrared thermal imaging camera based on the principle of infrared radiation to the human body as a source of radiation, the use of infrared detectors, to capture the object issued by the infrared radiation energy, infrared radiation emitted from the surface of the space object with different color scale The color of the infrared radiation emitted from the surface of the object in space is expressed in different shades of color, transforming it into a visual, quantifiable pseudo-color heat map, with bright tones indicating high temperatures and dark tones indicating low temperatures, making the infrared heat map more intuitive and easier to decipher, and more often used in clinical diagnostics involving a variety of fields.
V. Environmental monitoring
2020 early epidemic suddenly attacked, in order to better prevention and control of prevention and treatment, both individuals and families, or communities, stations, hospitals and other places are in urgent need of thermometers to screen patients with fever, so the demand for thermometers increased dramatically. Non-contact infrared thermometer by measuring the intensity of infrared radiation emitted by the target to calculate the surface temperature of the object, the whole process does not contact with the object.
Six, ground imaging
The larger the infrared detector scale, the clearer the view, large-scale is the pixel to do more, the largest scale is the United States to do 64 million pixels.
The above is the inventory of this issue, of course, the application of infrared detectors is not only here, we will continue to introduce the next issue ~
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