| 摘要 |
<p>PURPOSE: A device for detecting a magnetic pattern is provided to detect the magnetic pattern with high precision by preventing a detection signal with noises from being inputted to a magnetic pattern detecting unit through a signal synthesizing unit. CONSTITUTION: A magnetic sensor device including an exciting coil and a detecting coil is arranged in a multichannel magnetic detecting unit(20) to correspond to a multichannel. The exciting coil of each magnetic sensor device is excited by a time-division exciting signal of a corresponding channel. A signal synthesizing unit converts and synthesizes a multichannel detection signal with constant timing or order and outputs a single channel time series detection signal. A magnetic pattern detecting unit(100) detects a magnetic pattern of a medium passing through the magnetic detecting unit based on the time series detection signal.</p> |
