Acoustic-magnetic label demagnetizer and demagnetization method

Abstract

The invention discloses an acoustic-magnetic label demagnetizer and a demagnetization method. The acoustic-magnetic label demagnetizer comprises a synchronous signal circuit, a transmitting circuit, a receiving circuit, an acquisition circuit, a signal processing module, a frequency detection module, a demagnetization module, a communication and display module and a main-control module, wherein the output end of the synchronous signal circuit is respectively connected with the input ends of the transmitting circuit and the frequency detection module; the output end of the transmitting circuit is connected with the input end of the receiving circuit; the output end of the receiving circuit is connected with the input end of the acquisition circuit; the output end of the acquisition circuit is respectively connected with the signal processing module and the main-control module; the output end of the signal processing module is connected with the input end of the frequency detection module; the output end of the main-control module is respectively connected with the transmitting circuit, the demagnetization module and the communication and display module; and the signal processing module and the frequency detection module are respectively in both-way communication with the main-control module. The equipment increases the demagnetization distance, strengthens the demagnetization energy, and reduces the design cost.

Description

technical field [0001] The invention relates to an acoustic magnetic label degausser and a degaussing method thereof. Background technique [0002] After years of development, the electronic anti-theft system has developed from a single principle and a single product in the early stage to a situation with a variety of different principles and varieties, adapting to the needs of different types of stores such as department stores, supermarkets, specialty stores, and libraries. There are six main types of EAS systems, which are distinguished by the way they are used to detect signals, namely electromagnetic wave systems, microwave systems, radio frequency systems, frequency division systems, intelligent systems, and acoustomagnetic systems. The essential characteristics of electronic anti-theft tags corresponding to different systems are also different. For example, the anti-theft label of the radio frequency system is 7. x~8. x Megahertz ring coil type, and the frequenc...

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Problems solved by technology

Judging from the current market applications, the price of the RF system is low, and the market share is high, but its principle defect is relatively large, and it is gradually being eliminated. Other systems also have strong application limitations, and the principle of the acousto-magnetic system is almost zero false positives. The characteristics of the old system will replace the old system in large quantities, making it the development trend of the EAS system. At present, the mainstream EAS system manufacturers in the world are focusing on the development of acousto-magnetic system products

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