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sensors:radio_frequency_identification [2018/11/01 18:55] – external edit 127.0.0.1sensors:radio_frequency_identification [2022/03/18 20:41] (current) – [Summary] paul.buser
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 =====  Summary  ===== =====  Summary  =====
 +See also: [[sensors:near_field_communication|Near-Field Communication (NFC) ]]
 ====  Introduction  ==== ====  Introduction  ====
 Another type of magnetic field sensing device is the magnetic tag. Basically, the technology behind magnetic tags is the same as the one used in anti-theft alarm systems in shops, where simple inductor-capacitor circuits or magnetostrictive strips are excited by a fixed search coil. Magnetostriction is the change in the dimension of a material when subjected to an external magnetic field. Another type of magnetic field sensing device is the magnetic tag. Basically, the technology behind magnetic tags is the same as the one used in anti-theft alarm systems in shops, where simple inductor-capacitor circuits or magnetostrictive strips are excited by a fixed search coil. Magnetostriction is the change in the dimension of a material when subjected to an external magnetic field.