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M. Tewes, M. Löhndorf, A. Ludwig, E. Quandt

Remotely Interrogated Magnetoelastic Sensors

A remotely interrogated sensor for mechanical quantities is presented which is based on the combination of magneto-elastic and magneto-impedance effects. As a consequence, strain inside the sensor element results in a change of the radar reflectivity. The corresponding measurement system and the strategies of signal processing are discussed with respect to an application as a tire sensor. Using this system, it is currently possible to wirelessly detect stretching up to 0.2% with a band width of 2 kHz appr.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 68, 06/2001
Pages: 292

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