China has created a new imaging detector explosives have nowhere
According to Science and Technology Daily, recently, the National University of Defense Technology has successfully developed a new type of electromagnetic wave penetration imaging detector. The detector can penetrate non-metallic media, detect tiny hidden objects inside and image the object with a resolution of 2mm, which can be widely used in construction, biomedicine, anti-terrorism, security inspection and other fields.
The detector is small in size and is equivalent to an ordinary rice cooker, and a single person can handle it by hand. Compared with similar devices such as X-ray machines and CT machines, their volume and weight are greatly reduced. Since the device uses electromagnetic waves to complete the detection work, there is no danger of high-energy radiation, and there is no radioactivity at all. The operator does not need to perform special protection like the X-ray machine. The detector's electromagnetic radiation power is extremely low, less than one-tenth of the mobile phone radiation, and it is very safe for the human body.
The detector uses electromagnetic waves to complete imaging of the interior of the object. It integrates an ultra-wideband electromagnetic wave transceiver component that can perform fast electromagnetic wave scans on non-metallic objects. Through the use of powerful digital signal processing capabilities, the internal structure of the scanned object and the shape of foreign objects are clearly displayed. Using this detector is like installing a pair of "perspective eyes" for the operator. The detector has a wide range of uses. It can be used to inspect the distribution of steel bars and cables in building walls. It can detect the early cancerous changes in biological tissues. It can be used to detect embedded explosives in buildings. It can be used to hide weapons on the body. And dangerous goods tested.
According to researcher Lu Yu, an associate professor, said: "The density of early cancerous tissue changes little, the effect of using CT inspection is not obvious, but the electromagnetic characteristics change greatly, and the use of electromagnetic wave detection can achieve very good results."
This device is currently the only device that uses active electromagnetic waves to achieve high-precision two-dimensional penetration imaging, and its imaging resolution is at the advanced level in the world. This equipment will provide important technical support for many industries in China and can replace X-ray machines, CT machines and other radioactive detection instruments in certain fields.
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