Metal carrying detection method based on wireless network

Abstract

The invention provides a metal carrying detection method based on a wireless network. The metal carrying detection method based on the wireless network comprises the following steps that the step s1, a wireless signal sending device and a wireless signal receiving device are installed indoors; the step s2, the wireless signal sending device continuously sends wireless electromagnetic wave signals; the step s3, the wireless signal receiving device continuously receives the wireless electromagnetic wave signals; the step s4, abnormity analysis is continuously conducted on the received wireless electromagnetic wave signals through a signal abnormity detection system, and after analysis is conducted and abnormity is determined through judgment, the wireless electromagnetic wave signals in an abnormity wave band are further analyzed in the step s5; the step s5, feature value extraction is conducted on the wireless electromagnetic wave signals in the abnormity wave band through a data feature analysis system, features of the wireless electromagnetic wave signals in the abnormity wave band and features stored in an abnormity feature library are compared and matched, and when the features of the wireless electromagnetic wave signals and the metal features are successfully matched, an alarm device is triggered. The metal carrying detection method based on the wireless network has the advantages that installation and deployment are convenient, the cost is low, no damage to a human body exists, the detection range is large, and the speed is high.

Description

technical field [0001] The invention relates to a metal carrying detection method, in particular to a wireless network-based metal carrying detection method. Background technique [0002] At present, the metal detection methods known to the public mainly include the following: (1) Item identification based on X-ray penetration technology, which uses radiography and other techniques to generate diagnostic images to identify items such as metals; X-rays are also Rays such as ionizing radiation, which are harmful to the human body, are mainly used in the field of medical inspection; luggage security inspection equipment currently on the market also mainly adopts this detection method. (2) Use the principle of electromagnetic induction (Hall effect, magnetoresistance, etc.) to detect the existence of metals by detecting the influence of metals on electromagnetic fields. At present, the world's most high-end hand-held metal detectors can detect 0.13 grams of gold and non-ferrous ...

AI Technical Summary

Problems solved by technology

(2) Use the principle of electromagnetic induction (Hall effect, magnetoresistance, etc.) to detect the existence of metals by detecting the influence of metals on electromagnetic fields. At present, the world's most high-end hand-held metal detectors can detect 0.13 grams of gold and non-ferrous metals The detection difficulty of non-ferrous metals is much worse than that of non-ferrous metals, because the magnetic field induction ability of non-ferrous metals is very poor

[0003] The implementation cost of the (1) method is very high, the product is bulky and heavy, difficult to transport and move, and its X-rays can cause serious harm to the human body; the cost of the (2) electromagnetic induction is relatively low compared to the first method, And it is less harmful to the human body, but it needs close-range detection. The handheld type needs to be detected close to the body, and the fixed door type is inconvenient to move, and the detection range is relatively narrow

Therefore, both of the above two methods must be carried out with the cooperation of the person being detected, and need to complete the corresponding action or go to the designated position, which greatly limits the range and speed of detection.

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