How can the ceramic knife "bravely" security check

With the news that the "Beijing real name system for the purchase of kitchen knives" has become popular, many netizens joked that it would be difficult for them to cook. Another message triggered a visual focus - "a ceramic knife can survive the security tester." For a time, many netizens have started to develop experiments. A netizen in Beijing stated that he successfully sat from Fuxingmen Subway Station to Datun Station. Some netizens broke the news that ceramic knives can even pass through airport security. After that, some netizens made an analysis: Although the ceramic cutter was once checked out, the ceramic cutter showed riveted items or a thin line on the image displayed by the X-ray machine. The security personnel could not check if they did not look closely. . For a time, the magical "stealth" function of the ceramic knife was pushed to the tip of the wind.

Relevant personnel responsible for security inspections of the Beijing subway said that different items appeared on the screen of the security instrument in different colors. In the case of bullets, the bullet casings are displayed in blue on the screen and the warheads are black. If the bullets are contained inside, they are displayed in red, which is a high risk. In addition, items such as controlled knives are displayed in blue, while plain paper products are displayed in light green. Therefore, even if the parcel is severely restricted, as long as it is a dangerous product, it will not escape the “eye” of the security instrument. Although there is no clear publicity on whether ceramic tools are prohibited on the subway. However, if security inspections are found, passengers will still carry out inspections with ceramic cutters and discourage passengers from entering the subway. This is to ensure operational safety.

Due to the inspection of security devices by netizens, subway workers encountered a lot of such “stealing passengers”. Of course, most of the ceramic knives found are used as gifts or in the kitchen of your home.

At the Capital Airport’s security inspection equipment, the results of the experiment also showed no suspense. According to the Capital Airport, passengers are generally required to pass 4 levels of security: The first is a document verification system, which mainly validates second-generation ID cards and boarding passes. The safety gate is the second pass. It mainly detects the metal objects on the passengers. If the metal objects are in the upper body, the safety door will light the upper one, prompting the security inspectors to check their positions. This is followed by a hand inspection, ie a security checker holding a test stick—usually a woman. The last pass is the X-ray machine. In the case of such inspections, it is impossible for the ceramic cutter to achieve "stealth" at all.

Professionals told the reporter that many passengers believe that the X-ray machine can only detect metal objects and “kick and dumb” tools made of ceramics, but this is not the case. Today's X-ray machines are more advanced and can provide passengers with multiple perspectives to form stereoscopic images. Take the X-ray machine used at the Capital Airport as an example. The X-ray machine uses multi-point source detection. Items in the baggage will form body images on the screen of the security inspector, and the colors will vary. The X-rays are absorbed by the object and form tiny shadows. The sensing device inside the machine enlarges this shadow and displays it on a computer screen. All the items in the form can be detected.

Ceramic knives themselves are well-loved because they have the exquisite appearance of arts and crafts, use green environmental protection, in the European and American gift market, ceramic knives are very popular gifts. China Porcelain Library reminds consumers here that although ceramic knives have many advantages such as being non-toxic, harmless, and green, they also cannot escape the characteristics of ceramic products that cannot be dropped. Must not be used to cut more rigid bones.