| 摘要 |
PROBLEM TO BE SOLVED: To provide a particulate shape measurement device capable of surely performing the detailed shape measurement of a particulate by detecting a change of a magnetic field by the particulate. SOLUTION: This device has a magnetic sensor 34 having a flat structure in which a coil 32 and coil source device 33 for forming the magnetic field 38 and a number of magnetic sensor elements 34a are arranged in matrix in a particulate measuring area part 36 and a sensor arrangement part 37, the sensor being arranged in the sensor arrangement part in opposition to the particulate measuring area part to detect the change of the magnetic field caused by the particulate 39 present in the particulate measuring area part by each magnetic sensor element; and a signal processor 35 for processing the detection signal of each magnetic sensor element of the magnetic sensor to determine the shape of the particulate. As the magnetic sensor, flat ones may be provided orthogonally, or the magnetic sensor may be constituted in a cylindrical, linear or annular shape. COPYRIGHT: (C)2004,JPO
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