Thermal imaging

Test equipment for calculating temperature value
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nature Everything in, whether Arctic Glacier , or flame, human body, or even the extremely cold deep space of the universe, as long as their temperature is higher than absolute zero - 273 ℃, there will be infrared radiation, which is due to the internal Molecular thermal motion Results. his Radiant energy It is proportional to the fourth power of its own temperature, and the wavelength radiated is inversely proportional to its temperature. Infrared imaging technology is based on the radiation energy of detected objects. The thermal image transformed into the target object through system processing is displayed in gray-scale or pseudo color, that is, the temperature distribution of the measured target is obtained to judge the state of the object. Therefore, the heat emitted by the detection object is Infrared thermal imaging technology The innate genes of.
Thermal imaging is a kind of detection equipment that detects infrared energy (heat) through non-contact detection, converts it into electrical signal, and then generates thermal image and temperature value on the display, and can calculate the temperature value.
The functions of thermal imaging include: prompt of inflammation, early warning of tumor, prompt of peripheral nerve disease, analysis of other difficult diseases, and tracking of curative effect.
Thermal imaging is also called long wave infrared imaging. Passive infrared imaging with working wave band of 3-14 μ m. It mainly records the infrared radiation of the object itself, which can change the thermal image of the scene radiation into a visible two-dimensional image. Thermal imaging systems mainly include thermal radiation electronic imaging and thermal photography. [2]
Chinese name
Thermal imaging
Via
Non contact detection of infrared energy
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electrical signal
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Testing equipment

What's the use of thermal imaging

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1. Hints of inflammation:
Rhinitis, paranasal sinusitis, oral inflammation, pharyngitis, thyroiditis, pneumonia, cholecystitis, appendicitis, gastroenteritis, prostatitis, adnexitis and other inflammation of all parts of the body.
2. Early warning of tumor:
Early warning of nasopharyngeal carcinoma, thyroid carcinoma, lung cancer, breast cancer, liver cancer, stomach cancer, bowel cancer, skin cancer and other cancers.
Facial paralysis, facial spasm, migraine Trigeminal neuralgia Tips for.
Hint and study of skin diseases, determination of the area and depth of burns and frostbite, observation of the efficacy of skin grafting.
4. Analysis of other difficult and complicated diseases and tracking of curative effect.

Advantages of thermography

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1、 Comprehensive system.
Professional doctors can conduct a comprehensive and systematic analysis of patients' general conditions in combination with clinical practice, overcoming the one-sided nature of other diagnostic techniques limited to a certain part. The application of far-infrared thermal imaging technology has been able to detect more than 100 kinds of diseases, including inflammation, tumors, stones, vascular diseases, nervous system, sub-health, and other diseases, involving common and frequently occurring diseases in various systems of the human body.
2、 "Green" is non-invasive.
many Imaging The instrument has more or less different degrees of harm to the human body, while the far infrared thermal imaging diagnosis will not produce any rays, and there is no need to label drugs. Therefore, it will not cause any harm to the human body and no pollution to the environment, and it is simple and economical. Far-infrared Thermal imaging technology It has realized the dream of human beings to pursue green health, and people vividly call this technology "green physical examination".
three It is conducive to early detection of diseases.
Compared with X-ray, B-ultrasound, CT and other imaging technologies, the most important advantage of far-infrared thermal imaging detection is early warning. Although X-ray, B-ultrasound, CT and other technologies have their own characteristics, they can only be found after the formation of the disease. Before the changes in the tissue structure and morphology of the disease occur, cell metabolism will be abnormal, and the human body will experience temperature changes. The height of the temperature, the shape of the temperature field, and the size of the temperature difference can reflect the location, nature, and extent of the disease. Far infrared thermal imaging technology can detect diseases based on abnormal human temperature, so it can interpret potential hazards without obvious physical signs in the body and detect problems earlier. Some data show that far-infrared thermography can detect lesions half a year or even earlier than structural images, which will win valuable time for early detection and prevention of diseases. [1]
Virtual external image formed by human thermal radiation Thermal imaging technology, also known as infrared radiation imaging technology. According to the optical theoretical knowledge of object imaging in nature, any object that can be captured by light can generate a photosensitive imaging state of the background object. In the modern society with highly developed science and technology, the night scene camera attachment with infrared thermal imaging has been popularized. The infrared imaging principle is mainly based on the infrared radiation principle that the object is higher than the absolute temperature of space - 273.15 degrees. That is to say, all objects higher than the absolute temperature of space will form a thermal infrared radiation state, while objects lower than the absolute temperature of space - 273.15 degrees do not have thermal infrared radiation. When the human body is in a special state, its temperature is different from that of static state, especially after taking part in strenuous activities. The body temperature is also higher after meals and after drinking a lot of hot water or high concentration alcohol. Some people's body temperature will also rise after they finish the mental Qigong. The temperature difference between people and between men and women will also show different states. The heat (infrared) radiation intensity of human body temperature in the above state will be higher than normal.
Those strange photos in nature are often formed by the above factors, because most objects in the earth space are generally above the absolute temperature of - 273.15 in space, so they will form a thermal infrared radiation state. The imaging time of the thermal infrared photography system is generally used in the dark night background. Because the natural light at night is weak and the light intensity is not enough, the object is difficult to be imaged by photosensitivity, so we will enable the additional device of infrared imaging. In addition, when taking pictures at night or in a dark place, it is likely that the brightness of the camera's flash is not enough to make up for the illumination at night, or that the camera's flash is damaged, or that the camera itself does not have a flash function, so people will only enable the infrared imaging function (there may be several factors).
Now let's see the picture:
In vitro virtual projection of human thermal radiation
According to the background imaging analysis of the picture, the light background is dark when taking pictures, which is likely to activate the infrared night photography function. Why do virtual bodies appear outside the human body contour? We can analyze it from three aspects:
1、 Human body (temperature) thermal infrared radiation.
2、 Air circulation
3、 Air humidity and composition
1、 Above, we have explained the mechanism of infrared imaging. Our body temperature is generally greater than or equal to 36 degrees, and the intensity of thermal infrared radiation will increase with it. At night or in a dark space, the temperature of the air is lower than that of the human body (autumn, winter, spring), and human thermal (infrared) radiation can form a thermal effect on the surrounding space gas. In summer, when the space temperature is higher than the human body temperature, we can use air conditioners in the house to cool down (lower than the human body temperature). At this time, the human body will form a thermal (infrared) radiation state to the air in the space. In this view, the air temperature within a distance of about 20cm around the human body must be higher than that beyond 20cm. The closer to the surface of the human body, the closer the temperature of its air will be to the human body, and the virtual human contour outside the body will be formed from the air. If there were no infrared imaging equipment, this cause would not be found. At night, all images taken by infrared attachment devices have local high temperature imaging (parts with darker red color in the negative film), especially the heart part of the human body.
2、 In the photo, we can see the virtual human silhouette appearing outside the body, which is mainly caused by the air circulation or the displacement of the human body.
1. When the human body radiates the thermal (infrared) radiation of the surrounding air, once the human body moves quickly, it will form a continuous state of action of the human body on the thermal radiation of the air. In brief, when the human body is moving rapidly, if we are taking photos with a camera with infrared auxiliary function, we will leave a continuous virtual image contour of the human body when it is moving. Because of the rapid movement of the human body, the temperature of the surrounding air (the temperature of the air used by the human body) where the original human body is located will not drop immediately, and the gas molecules with human body temperature will also radiate infrared rays, so it will form a virtual human body image (with infrared imaging conditions) that is close to the original human body contour and composed of air with human body temperature.
2. Air circulation, thermal (infrared) radiation, space gas temperature, cameras with infrared auxiliary function, as long as these conditions are met, it is possible to image the virtual body of the human body. We have said that when the human body is in a static state, the temperature of the surrounding air (the temperature of the air acted by the human body) where the human body is located will be similar to the human body temperature, because the gas molecules with human body temperature will also radiate infrared rays, which will form a virtual human body image (with infrared imaging conditions) that is close to the original human body contour and composed of air with human body temperature. When there is air circulation in the room, these surrounding gases affected by human thermal (infrared) radiation will shift and form another virtual human image similar to myself.
In general, the infrared virtual body caused by human displacement (air circulation) is located by the bosons in the flesh cells on the surface of the human head (or all of the human body). The air molecules heated by human infrared radiation still retain the features of the original human body. Because the temperature of heat radiation formed by the organs on the surface of the human body and various parts of the skin are different, the temperature of each part of the virtual human body model composed of air is also different, thus the infrared imaging pictures similar to the real human virtual appearance appear. The higher the intensity of thermal (infrared) radiation, the greater the probability of forming external (thermal radiation) imaging for people with large physical energy. In the same population with different space and physical signs, there will be different infrared radiation imaging factors, and people with high body temperature will easily form external virtual bodies under thermal (infrared) radiation.
3、 The humidity and density of indoor or outdoor air are also part of the reasons for the virtual image of human body. At the same time, in a narrow space, due to the large number of people, the indoor or outdoor air temperature will rise, and the density of dirty air and water molecules will also increase. All these factors will have an impact on the refraction of light, and will also form the natural refraction phenomenon of "mirage" objects that move at a long distance due to the rising humidity and density of gas molecules. The "stream of consciousness" in the picture is actually the rising circulation of air within a small range of human body temperature and the high humidity dirty gas exhaled from human lungs. The increase of air humidity, density, atmospheric circulation, complex gas composition, temperature rise, etc., and many unsolved mysteries in nature are easy to occur. This also includes human sensory illusion, hearing illusion, magnetic force, gravity, sound wave, radiation of outer space electron flow and other reasons.
For those virtual images of human bodies appearing in the photos, people who do not know science often refer to these factors as divine ideas such as the true light of the universe, the spirit of immortals, the stream of consciousness, the flow of human souls, etc When we use modern scientific concepts of human beings to explain, aren't all these divine ideas behind the real masterpieces of nature? And those supernatural pictures, strange pictures, strange pictures, strange pictures, and so on, are not all caused by the scientific theory of nature? We sincerely invite experts and scholars to discuss the unsolved mysteries of nature, so as to carry forward the spirit of human science and keep people away from superstition in religion. It is the duty of our scientific and technological workers to do a good job in popularizing science.
Precautions for thermal imaging inspection
Thermal imaging
Infrared thermography The detection principle of is actually not so mysterious. It is explained from the physical principle that the human body can be naturally produced Infrared radiation source , constantly radiate and absorb infrared radiation. The temperature of each part of the normal human body is stable and special. Different temperatures have different thermal fields. When a certain part has lesions or abnormalities, the blood flow here will change, leading to changes in local temperature. According to this principle, infrared thermal imaging collects infrared radiation of human body through thermal imager, converts it into digital signal, and then generates color thermal image. The experts in the physical examination center analyze and judge the location, nature and extent of human lesions according to these heat maps.
Finally, experts from the People's Medical Examination Center would like to introduce such special Infrared thermography Precautions before inspection:
1、 It takes three hours without food or water for a stomach check.
2、 The patients who are examined for their whole body, liver, gallbladder and prostate should not take alcohol, coffee drinks or vasodilators within 24 hours before examination.
3、 Women who want to check breast and pelvic cavity should choose 5-10 days after menstruation. All pelvic examinees need to urinate and defecate.
4、 Do not use external medicine, physiotherapy, cupping and massage within 24 hours before the examination to avoid leaving traces on the skin and affecting the examination results. [1]