Metal tags and detection systems

Abstract

The present invention provides a metal tag and a detection system. The metal tag includes a metal symbol made on the surface of the metal object to record the information of the object. The surface of the metal object is also provided with an electromagnetic induction excitation coil. The position parameters and metal symbol parameters on the surface of the item are encoded to record the item information; the electromagnetic induction excitation coil includes a solenoid coil and an AC signal generator connected to the solenoid coil, and the electromagnetic induction excitation coil is arranged on Above the surface of the metal object, the AC signal generator sends out an AC frequency signal to excite the solenoid coil, so that the metal surface induces an AC current. The beneficial effects of the present invention are: the technical solution used in the present invention has the advantages of greater information volume, less pollution, and automatic identification. The metal label information recording and detection system is a supplement to the existing metal article information recording method, which can It is widely used in the perception of item information in the Internet of Things system.

Description

technical field [0001] The invention relates to the fields of AC magnetic field measurement, electromagnetic detection technology, information recording, metal surface detection and identification, and in particular to a metal label and a detection system. Background technique [0002] The perception and collection of item information is an important part of the Internet of Things system. At present, several major item identification technologies (barcode, RFID, and magnetic stripe) have problems such as easy damage and relatively high prices. Moreover, these information recording technologies are only suitable for short-term use occasions such as item production, storage, and circulation, and cannot be used for a long time in humid, large temperature difference, polluted environments such as open air, underground, and outdoors. [0003] Existing long-term item information records, such as motor, engine nameplate, gas and liquid storage tank labels and other item information...

AI Technical Summary

Problems solved by technology

[0002] The perception and collection of item information is an important part of the Internet of Things system. At present, several major item identification technologies (barcode, RFID, and magnetic stripe) have problems such as easy damage and relatively high prices.

Moreover, these information recording technologies are only suitable for short-term use occasions such as the production, storage, and circulation of items, and cannot be used for a long time in open air, underground, and outdoor environments such as humidity, large temperature differences, and pollution.

[0003] Existing item information records that have been used for a long time, such as motor, engine nameplate, gas and liquid storage tank labels and other item information records, use words or letters to engrave on the metal surface of the item, the amount of information is small, and it cannot be automatically identified

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