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09
2024
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Applications of electromagnetic sensors
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The working principle of the magnetoelectric sensor is based on Faraday's law of electromagnetic induction. When a conductor moves relative to a magnetic field, an induced electromotive force is generated in the conductor. The magnetoelectric sensor utilizes this principle to convert changes in the magnetic field into electrical signal output.
Generation of the magnetic field: The magnetic field of the magnetoelectric sensor can be generated by permanent magnets, electromagnets, or magnetostrictive materials.
Relative motion of the conductor: There needs to be relative motion between the conductor and the magnetic field to generate induced electromotive force. This relative motion can be linear motion, rotational motion, or vibration of the conductor.
Generation of induced electromotive force: When the conductor moves in the magnetic field, an induced electromotive force is generated in the conductor. The magnitude of the induced electromotive force is proportional to the strength of the magnetic field, the speed of the conductor, and the effective length of the conductor in the magnetic field.
Output of electrical signals: After amplification, filtering, and analog-to-digital conversion of the induced electromotive force, an electrical signal output corresponding to the changes in the magnetic field can be obtained.
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