| 摘要 |
PROBLEM TO BE SOLVED: To detect a position of a magnetic substance, if peak magnetic field strength of a magnetic substance to be detected exceeds the upper limit of detectable magnetic field strength of a magnetic sensor. SOLUTION: A paired magnetic sensor comprising two magnetic sensors provided in the same predetermined direction at a predetermined interval is used, this paired sensor or the magnetic substance is driven to travel in a predetermined direction, and a position where detection outputs from both magnetic sensors are substantially equal to each other is detected. COPYRIGHT: (C)2008,JPO&INPIT
|
