THREE-DIMENSIONAL DIGITIZER

PROBLEM TO BE SOLVED: To measure with precision even a metallic object except for magnetic bodies without requiring a cable on a probe side by allowing a transmitter to emit DC magnetic field and detecting a magnetic field due to a sample object, according to distance. SOLUTION: Stage 11 on which a...

Full description

Saved in:
Bibliographic Details
Main Author TAKAHATA MITSUHIRO
Format Patent
LanguageEnglish
Published 12.12.1997
Edition6
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To measure with precision even a metallic object except for magnetic bodies without requiring a cable on a probe side by allowing a transmitter to emit DC magnetic field and detecting a magnetic field due to a sample object, according to distance. SOLUTION: Stage 11 on which a sample object 16 is place, a probe 14 comprising a permanent 13 which acts as a transmitter, and an electronic circuit 15 are provided. Within stage 11, nine magnetic sensors 12-1 , 12-2 ...12-9 are disposed, and these sensors 12-1 , 12-2 ...12-9 are, with a cable 17, separately connected to an amplifier of the electronic circuit part 15. A detection signal is amplified by these amplifiers, and then converted into digital signal with an A/D converter, and then taken into a calculation circuit of the circuit part 15 for respective distance calculations. As the magnetic force of the magnet 13 increases, precision becomes higher, however, increase of the magnet itself results in degradation of precision, so, balancing is required.
Bibliography:Application Number: JP19960134862