APPARATUS AND METHOD FOR DETECTING NONLINEAR MAGNETIC PARTICLE BASED ON SINGLE EXCITATION COIL

摘要

Apparatus and method for detecting a nonlinear magnetic particle based on a single excitation coil. The apparatus includes a signal generation unit for generating an input composite signal by combining a high-frequency sine wave signal and a low-frequency sine wave signal, generated based on a fundamental frequency, with each other, a signal application unit for applying the input composite signal to a single excitation solenoid coil included in a measurement head, through which a sample passes, to generate a magnetic field in the measurement head so as to detect a nonlinear magnetic particle, and a detection unit for detecting an output signal emitted from the sample depending on the magnetic field by using at least one detection solenoid coil included in the measurement head, analyzing a frequency domain of the output signal, and detecting whether the nonlinear magnetic particle is present in the sample.

主权项

1. An apparatus for detecting a nonlinear magnetic particle based on a single excitation coil, comprising:
a signal generation unit for generating an input composite signal by combining a high-frequency sine wave signal and a low-frequency sine wave signal, generated based on a fundamental frequency, with each other; a signal application unit for applying the input composite signal to a single excitation solenoid coil included in a measurement head, through which a sample passes, to generate a magnetic field in the measurement head so as to detect a nonlinear magnetic particle; and a detection unit for detecting an output signal emitted from the sample depending on the magnetic field by using at least one detection solenoid coil included in the measurement head, for analyzing a frequency domain of the output signal, and for detecting whether the nonlinear magnetic particle is present in the sample.